diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-05-17 08:53:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-05-17 08:53:47 -0700 |
| commit | 4853f1f6ace32c68a04287353e428c4cfc3fa8ed (patch) | |
| tree | 15bf600ce002c8aca583d9525dfd8241447987e0 | |
| parent | ea5f6ad9ad9645733b72ab53a98e719b460d36a6 (diff) | |
| parent | f698d314eec2e16b980128b503d96bd73df77e90 (diff) | |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux
Pull ARM updates from Russell King:
- Updates to AMBA bus subsystem to drop .owner struct device_driver
initialisations, moving that to code instead.
- Add LPAE privileged-access-never support
- Add support for Clang CFI
- clkdev: report over-sized device or connection strings
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux: (36 commits)
ARM: 9398/1: Fix userspace enter on LPAE with CC_OPTIMIZE_FOR_SIZE=y
clkdev: report over-sized strings when creating clkdev entries
ARM: 9393/1: mm: Use conditionals for CFI branches
ARM: 9392/2: Support CLANG CFI
ARM: 9391/2: hw_breakpoint: Handle CFI breakpoints
ARM: 9390/2: lib: Annotate loop delay instructions for CFI
ARM: 9389/2: mm: Define prototypes for all per-processor calls
ARM: 9388/2: mm: Type-annotate all per-processor assembly routines
ARM: 9387/2: mm: Rewrite cacheflush vtables in CFI safe C
ARM: 9386/2: mm: Use symbol alias for cache functions
ARM: 9385/2: mm: Type-annotate all cache assembly routines
ARM: 9384/2: mm: Make tlbflush routines CFI safe
ARM: 9382/1: ftrace: Define ftrace_stub_graph
ARM: 9358/2: Implement PAN for LPAE by TTBR0 page table walks disablement
ARM: 9357/2: Reduce the number of #ifdef CONFIG_CPU_SW_DOMAIN_PAN
ARM: 9356/2: Move asm statements accessing TTBCR into C functions
ARM: 9355/2: Add TTBCR_* definitions to pgtable-3level-hwdef.h
ARM: 9379/1: coresight: tpda: drop owner assignment
ARM: 9378/1: coresight: etm4x: drop owner assignment
ARM: 9377/1: hwrng: nomadik: drop owner assignment
...
84 files changed, 2607 insertions, 1013 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index b14aed3a17ab..749d6e3788b4 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -35,6 +35,7 @@ config ARM select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT if CPU_V7 select ARCH_SUPPORTS_ATOMIC_RMW + select ARCH_SUPPORTS_CFI_CLANG select ARCH_SUPPORTS_HUGETLBFS if ARM_LPAE select ARCH_SUPPORTS_PER_VMA_LOCK select ARCH_USE_BUILTIN_BSWAP @@ -1233,9 +1234,9 @@ config HIGHPTE consumed by page tables. Setting this option will allow user-space 2nd level page tables to reside in high memory. -config CPU_SW_DOMAIN_PAN - bool "Enable use of CPU domains to implement privileged no-access" - depends on MMU && !ARM_LPAE +config ARM_PAN + bool "Enable privileged no-access" + depends on MMU default y help Increase kernel security by ensuring that normal kernel accesses @@ -1244,10 +1245,26 @@ config CPU_SW_DOMAIN_PAN by ensuring that magic values (such as LIST_POISON) will always fault when dereferenced. + The implementation uses CPU domains when !CONFIG_ARM_LPAE and + disabling of TTBR0 page table walks with CONFIG_ARM_LPAE. + +config CPU_SW_DOMAIN_PAN + def_bool y + depends on ARM_PAN && !ARM_LPAE + help + Enable use of CPU domains to implement privileged no-access. + CPUs with low-vector mappings use a best-efforts implementation. Their lower 1MB needs to remain accessible for the vectors, but the remainder of userspace will become appropriately inaccessible. +config CPU_TTBR0_PAN + def_bool y + depends on ARM_PAN && ARM_LPAE + help + Enable privileged no-access by disabling TTBR0 page table walks when + running in kernel mode. + config HW_PERF_EVENTS def_bool y depends on ARM_PMU diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index aebe2c8f6a68..d33c1e24e00b 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -21,6 +21,7 @@ #include <asm/opcodes-virt.h> #include <asm/asm-offsets.h> #include <asm/page.h> +#include <asm/pgtable.h> #include <asm/thread_info.h> #include <asm/uaccess-asm.h> diff --git a/arch/arm/include/asm/glue-cache.h b/arch/arm/include/asm/glue-cache.h index 724f8dac1e5b..4186fbf7341f 100644 --- a/arch/arm/include/asm/glue-cache.h +++ b/arch/arm/include/asm/glue-cache.h @@ -118,6 +118,10 @@ # define MULTI_CACHE 1 #endif +#ifdef CONFIG_CPU_CACHE_NOP +# define MULTI_CACHE 1 +#endif + #if defined(CONFIG_CPU_V7M) # define MULTI_CACHE 1 #endif @@ -126,29 +130,15 @@ #error Unknown cache maintenance model #endif -#ifndef __ASSEMBLER__ -static inline void nop_flush_icache_all(void) { } -static inline void nop_flush_kern_cache_all(void) { } -static inline void nop_flush_kern_cache_louis(void) { } -static inline void nop_flush_user_cache_all(void) { } -static inline void nop_flush_user_cache_range(unsigned long a, - unsigned long b, unsigned int c) { } - -static inline void nop_coherent_kern_range(unsigned long a, unsigned long b) { } -static inline int nop_coherent_user_range(unsigned long a, - unsigned long b) { return 0; } -static inline void nop_flush_kern_dcache_area(void *a, size_t s) { } - -static inline void nop_dma_flush_range(const void *a, const void *b) { } - -static inline void nop_dma_map_area(const void *s, size_t l, int f) { } -static inline void nop_dma_unmap_area(const void *s, size_t l, int f) { } -#endif - #ifndef MULTI_CACHE #define __cpuc_flush_icache_all __glue(_CACHE,_flush_icache_all) #define __cpuc_flush_kern_all __glue(_CACHE,_flush_kern_cache_all) +/* This function only has a dedicated assembly callback on the v7 cache */ +#ifdef CONFIG_CPU_CACHE_V7 #define __cpuc_flush_kern_louis __glue(_CACHE,_flush_kern_cache_louis) +#else +#define __cpuc_flush_kern_louis __glue(_CACHE,_flush_kern_cache_all) +#endif #define __cpuc_flush_user_all __glue(_CACHE,_flush_user_cache_all) #define __cpuc_flush_user_range __glue(_CACHE,_flush_user_cache_range) #define __cpuc_coherent_kern_range __glue(_CACHE,_coherent_kern_range) diff --git a/arch/arm/include/asm/hw_breakpoint.h b/arch/arm/include/asm/hw_breakpoint.h index 62358d3ca0a8..e7f9961c53b2 100644 --- a/arch/arm/include/asm/hw_breakpoint.h +++ b/arch/arm/include/asm/hw_breakpoint.h @@ -84,6 +84,7 @@ static inline void decode_ctrl_reg(u32 reg, #define ARM_DSCR_MOE(x) ((x >> 2) & 0xf) #define ARM_ENTRY_BREAKPOINT 0x1 #define ARM_ENTRY_ASYNC_WATCHPOINT 0x2 +#define ARM_ENTRY_CFI_BREAKPOINT 0x3 #define ARM_ENTRY_SYNC_WATCHPOINT 0xa /* DSCR monitor/halting bits. */ diff --git a/arch/arm/include/asm/pgtable-3level-hwdef.h b/arch/arm/include/asm/pgtable-3level-hwdef.h index 2f35b4eddaa8..323ad811732e 100644 --- a/arch/arm/include/asm/pgtable-3level-hwdef.h +++ b/arch/arm/include/asm/pgtable-3level-hwdef.h @@ -74,6 +74,7 @@ #define PHYS_MASK_SHIFT (40) #define PHYS_MASK ((1ULL << PHYS_MASK_SHIFT) - 1) +#ifndef CONFIG_CPU_TTBR0_PAN /* * TTBR0/TTBR1 split (PAGE_OFFSET): * 0x40000000: T0SZ = 2, T1SZ = 0 (not used) @@ -93,5 +94,30 @@ #endif #define TTBR1_SIZE (((PAGE_OFFSET >> 30) - 1) << 16) +#else +/* + * With CONFIG_CPU_TTBR0_PAN enabled, TTBR1 is only used during uaccess + * disabled regions when TTBR0 is disabled. + */ +#define TTBR1_OFFSET 0 /* pointing to swapper_pg_dir */ +#define TTBR1_SIZE 0 /* TTBR1 size controlled via TTBCR.T0SZ */ +#endif + +/* + * TTBCR register bits. + */ +#define TTBCR_EAE (1 << 31) +#define TTBCR_IMP (1 << 30) +#define TTBCR_SH1_MASK (3 << 28) +#define TTBCR_ORGN1_MASK (3 << 26) +#define TTBCR_IRGN1_MASK (3 << 24) +#define TTBCR_EPD1 (1 << 23) +#define TTBCR_A1 (1 << 22) +#define TTBCR_T1SZ_MASK (7 << 16) +#define TTBCR_SH0_MASK (3 << 12) +#define TTBCR_ORGN0_MASK (3 << 10) +#define TTBCR_IRGN0_MASK (3 << 8) +#define TTBCR_EPD0 (1 << 7) +#define TTBCR_T0SZ_MASK (7 << 0) #endif diff --git a/arch/arm/include/asm/proc-fns.h b/arch/arm/include/asm/proc-fns.h index 280396483f5d..b4986a23d852 100644 --- a/arch/arm/include/asm/proc-fns.h +++ b/arch/arm/include/asm/proc-fns.h @@ -178,6 +178,18 @@ extern void cpu_resume(void); }) #endif +static inline unsigned int cpu_get_ttbcr(void) +{ + unsigned int ttbcr; + asm("mrc p15, 0, %0, c2, c0, 2" : "=r" (ttbcr)); + return ttbcr; +} + +static inline void cpu_set_ttbcr(unsigned int ttbcr) +{ + asm volatile("mcr p15, 0, %0, c2, c0, 2" : : "r" (ttbcr) : "memory"); +} + #else /*!CONFIG_MMU */ #define cpu_switch_mm(pgd,mm) { } diff --git a/arch/arm/include/asm/ptrace.h b/arch/arm/include/asm/ptrace.h index 14a38cc67e0b..6eb311fb2da0 100644 --- a/arch/arm/include/asm/ptrace.h +++ b/arch/arm/include/asm/ptrace.h @@ -20,6 +20,7 @@ struct pt_regs { struct svc_pt_regs { struct pt_regs regs; u32 dacr; + u32 ttbcr; }; #define to_svc_pt_regs(r) container_of(r, struct svc_pt_regs, regs) diff --git a/arch/arm/include/asm/uaccess-asm.h b/arch/arm/include/asm/uaccess-asm.h index 65da32e1f1c1..4bccd895d954 100644 --- a/arch/arm/include/asm/uaccess-asm.h +++ b/arch/arm/include/asm/uaccess-asm.h @@ -39,8 +39,9 @@ #endif .endm +#if defined(CONFIG_CPU_SW_DOMAIN_PAN) + .macro uaccess_disable, tmp, isb=1 -#ifdef CONFIG_CPU_SW_DOMAIN_PAN /* * Whenever we re-enter userspace, the domains should always be * set appropriately. @@ -50,11 +51,9 @@ .if \isb instr_sync .endif -#endif .endm .macro uaccess_enable, tmp, isb=1 -#ifdef CONFIG_CPU_SW_DOMAIN_PAN /* * Whenever we re-enter userspace, the domains should always be * set appropriately. @@ -64,15 +63,61 @@ .if \isb instr_sync .endif -#endif .endm +#elif defined(CONFIG_CPU_TTBR0_PAN) + + .macro uaccess_disable, tmp, isb=1 + /* + * Disable TTBR0 page table walks (EDP0 = 1), use the reserved ASID + * from TTBR1 (A1 = 1) and enable TTBR1 page table walks for kernel + * addresses by reducing TTBR0 range to 32MB (T0SZ = 7). + */ + mrc p15, 0, \tmp, c2, c0, 2 @ read TTBCR + orr \tmp, \tmp, #TTBCR_EPD0 | TTBCR_T0SZ_MASK + orr \tmp, \tmp, #TTBCR_A1 + mcr p15, 0, \tmp, c2, c0, 2 @ write TTBCR + .if \isb + instr_sync + .endif + .endm + + .macro uaccess_enable, tmp, isb=1 + /* + * Enable TTBR0 page table walks (T0SZ = 0, EDP0 = 0) and ASID from + * TTBR0 (A1 = 0). + */ + mrc p15, 0, \tmp, c2, c0, 2 @ read TTBCR + bic \tmp, \tmp, #TTBCR_EPD0 | TTBCR_T0SZ_MASK + bic \tmp, \tmp, #TTBCR_A1 + mcr p15, 0, \tmp, c2, c0, 2 @ write TTBCR + .if \isb + instr_sync + .endif + .endm + +#else + + .macro uaccess_disable, tmp, isb=1 + .endm + + .macro uaccess_enable, tmp, isb=1 + .endm + +#endif + #if defined(CONFIG_CPU_SW_DOMAIN_PAN) || defined(CONFIG_CPU_USE_DOMAINS) #define DACR(x...) x #else #define DACR(x...) #endif +#ifdef CONFIG_CPU_TTBR0_PAN +#define PAN(x...) x +#else +#define PAN(x...) +#endif + /* * Save the address limit on entry to a privileged exception. * @@ -86,6 +131,8 @@ .macro uaccess_entry, tsk, tmp0, tmp1, tmp2, disable DACR( mrc p15, 0, \tmp0, c3, c0, 0) DACR( str \tmp0, [sp, #SVC_DACR]) + PAN( mrc p15, 0, \tmp0, c2, c0, 2) + PAN( str \tmp0, [sp, #SVC_TTBCR]) .if \disable && IS_ENABLED(CONFIG_CPU_SW_DOMAIN_PAN) /* kernel=client, user=no access */ mov \tmp2, #DACR_UACCESS_DISABLE @@ -104,8 +151,11 @@ .macro uaccess_exit, tsk, tmp0, tmp1 DACR( ldr \tmp0, [sp, #SVC_DACR]) DACR( mcr p15, 0, \tmp0, c3, c0, 0) + PAN( ldr \tmp0, [sp, #SVC_TTBCR]) + PAN( mcr p15, 0, \tmp0, c2, c0, 2) .endm #undef DACR +#undef PAN #endif /* __ASM_UACCESS_ASM_H__ */ diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h index 9556d04387f7..6c9c16d767cf 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -14,6 +14,8 @@ #include <asm/domain.h> #include <asm/unaligned.h> #include <asm/unified.h> +#include <asm/pgtable.h> +#include <asm/proc-fns.h> #include <asm/compiler.h> #include <asm/extable.h> @@ -24,9 +26,10 @@ * perform such accesses (eg, via list poison values) which could then * be exploited for priviledge escalation. */ +#if defined(CONFIG_CPU_SW_DOMAIN_PAN) + static __always_inline unsigned int uaccess_save_and_enable(void) { -#ifdef CONFIG_CPU_SW_DOMAIN_PAN unsigned int old_domain = get_domain(); /* Set the current domain access to permit user accesses */ @@ -34,19 +37,49 @@ static __always_inline unsigned int uaccess_save_and_enable(void) domain_val(DOMAIN_USER, DOMAIN_CLIENT)); return old_domain; -#else - return 0; -#endif } static __always_inline void uaccess_restore(unsigned int flags) { -#ifdef CONFIG_CPU_SW_DOMAIN_PAN /* Restore the user access mask */ set_domain(flags); -#endif } +#elif defined(CONFIG_CPU_TTBR0_PAN) + +static __always_inline unsigned int uaccess_save_and_enable(void) +{ + unsigned int old_ttbcr = cpu_get_ttbcr(); + + /* + * Enable TTBR0 page table walks (T0SZ = 0, EDP0 = 0) and ASID from + * TTBR0 (A1 = 0). + */ + cpu_set_ttbcr(old_ttbcr & ~(TTBCR_A1 | TTBCR_EPD0 | TTBCR_T0SZ_MASK)); + isb(); + + return old_ttbcr; +} + +static inline void uaccess_restore(unsigned int flags) +{ + cpu_set_ttbcr(flags); + isb(); +} + +#else + +static inline unsigned int uaccess_save_and_enable(void) +{ + return 0; +} + +static inline void uaccess_restore(unsigned int flags) +{ +} + +#endif + /* * These two are intentionally not defined anywhere - if the kernel * code generates any references to them, that's a bug. diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 4915662842ff..4853875740d0 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -85,6 +85,7 @@ int main(void) DEFINE(S_OLD_R0, offsetof(struct pt_regs, ARM_ORIG_r0)); DEFINE(PT_REGS_SIZE, sizeof(struct pt_regs)); DEFINE(SVC_DACR, offsetof(struct svc_pt_regs, dacr)); + DEFINE(SVC_TTBCR, offsetof(struct svc_pt_regs, ttbcr)); DEFINE(SVC_REGS_SIZE, sizeof(struct svc_pt_regs)); BLANK(); DEFINE(SIGFRAME_RC3_OFFSET, offsetof(struct sigframe, retcode[3])); diff --git a/arch/arm/kernel/entry-ftrace.S b/arch/arm/kernel/entry-ftrace.S index 3e7bcaca5e07..bc598e3d8dd2 100644 --- a/arch/arm/kernel/entry-ftrace.S +++ b/arch/arm/kernel/entry-ftrace.S @@ -271,6 +271,10 @@ ENTRY(ftrace_stub) ret lr ENDPROC(ftrace_stub) +ENTRY(ftrace_stub_graph) + ret lr +ENDPROC(ftrace_stub_graph) + #ifdef CONFIG_DYNAMIC_FTRACE __INIT diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c index 054e9199f30d..a12efd0f43e8 100644 --- a/arch/arm/kernel/hw_breakpoint.c +++ b/arch/arm/kernel/hw_breakpoint.c @@ -17,6 +17,7 @@ #include <linux/perf_event.h> #include <linux/hw_breakpoint.h> #include <linux/smp.h> +#include <linux/cfi.h> #include <linux/cpu_pm.h> #include <linux/coresight.h> @@ -903,6 +904,37 @@ unlock: watchpoint_single_step_handler(addr); } +#ifdef CONFIG_CFI_CLANG +static void hw_breakpoint_cfi_handler(struct pt_regs *regs) +{ + /* + * TODO: implementing target and type to pass to CFI using the more + * elaborate report_cfi_failure() requires compiler work. To be able + * to properly extract target information the compiler needs to + * emit a stable instructions sequence for the CFI checks so we can + * decode the instructions preceding the trap and figure out which + * registers were used. + */ + + switch (report_cfi_failure_noaddr(regs, instruction_pointer(regs))) { + case BUG_TRAP_TYPE_BUG: + die("Oops - CFI", regs, 0); + break; + case BUG_TRAP_TYPE_WARN: + /* Skip the breaking instruction */ + instruction_pointer(regs) += 4; + break; + default: + die("Unknown CFI error", regs, 0); + break; + } +} +#else +static void hw_breakpoint_cfi_handler(struct pt_regs *regs) +{ +} +#endif + /* * Called from either the Data Abort Handler [watchpoint] or the * Prefetch Abort Handler [breakpoint] with interrupts disabled. @@ -932,6 +964,9 @@ static int hw_breakpoint_pending(unsigned long addr, unsigned int fsr, case ARM_ENTRY_SYNC_WATCHPOINT: watchpoint_handler(addr, fsr, regs); break; + case ARM_ENTRY_CFI_BREAKPOINT: + hw_breakpoint_cfi_handler(regs); + break; default: ret = 1; /* Unhandled fault. */ } diff --git a/arch/arm/kernel/suspend.c b/arch/arm/kernel/suspend.c index c3ec3861dd07..58a6441b58c4 100644 --- a/arch/arm/kernel/suspend.c +++ b/arch/arm/kernel/suspend.c @@ -12,6 +12,7 @@ #include <asm/smp_plat.h> #include <asm/suspend.h> #include <asm/tlbflush.h> +#include <asm/uaccess.h> extern int __cpu_suspend(unsigned long, int (*)(unsigned long), u32 cpuid); extern void cpu_resume_mmu(void); @@ -27,6 +28,13 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) return -EINVAL; /* + * Needed for the MMU disabling/enabing code to be able to run from + * TTBR0 addresses. + */ + if (IS_ENABLED(CONFIG_CPU_TTBR0_PAN)) + uaccess_save_and_enable(); + + /* * Function graph tracer state gets incosistent when the kernel * calls functions that never return (aka suspend finishers) hence * disable graph tracing during their execution. diff --git a/arch/arm/lib/csumpartialcopyuser.S b/arch/arm/lib/csumpartialcopyuser.S index 6928781e6bee..c289bde04743 100644 --- a/arch/arm/lib/csumpartialcopyuser.S +++ b/arch/arm/lib/csumpartialcopyuser.S @@ -13,7 +13,8 @@ .text -#ifdef CONFIG_CPU_SW_DOMAIN_PAN +#if defined(CONFIG_CPU_SW_DOMAIN_PAN) + .macro save_regs mrc p15, 0, ip, c3, c0, 0 stmfd sp!, {r1, r2, r4 - r8, ip, lr} @@ -25,7 +26,23 @@ mcr p15, 0, ip, c3, c0, 0 ret lr .endm + +#elif defined(CONFIG_CPU_TTBR0_PAN) + + .macro save_regs + mrc p15, 0, ip, c2, c0, 2 @ read TTBCR + stmfd sp!, {r1, r2, r4 - r8, ip, lr} + uaccess_enable ip + .endm + + .macro load_regs + ldmfd sp!, {r1, r2, r4 - r8, ip, lr} + mcr p15, 0, ip, c2, c0, 2 @ restore TTBCR + ret lr + .endm + #else + .macro save_regs stmfd sp!, {r1, r2, r4 - r8, lr} .endm @@ -33,6 +50,7 @@ .macro load_regs ldmfd sp!, {r1, r2, r4 - r8, pc} .endm + #endif .macro load1b, reg1 diff --git a/arch/arm/lib/delay-loop.S b/arch/arm/lib/delay-loop.S index 3ac05177d097..33b08ca1c242 100644 --- a/arch/arm/lib/delay-loop.S +++ b/arch/arm/lib/delay-loop.S @@ -5,6 +5,7 @@ * Copyright (C) 1995, 1996 Russell King */ #include <linux/linkage.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/delay.h> @@ -24,21 +25,26 @@ * HZ <= 1000 */ -ENTRY(__loop_udelay) +SYM_TYPED_FUNC_START(__loop_udelay) ldr r2, .LC1 mul r0, r2, r0 @ r0 = delay_us * UDELAY_MULT -ENTRY(__loop_const_udelay) @ 0 <= r0 <= 0xfffffaf0 + b __loop_const_udelay +SYM_FUNC_END(__loop_udelay) + +SYM_TYPED_FUNC_START(__loop_const_udelay) @ 0 <= r0 <= 0xfffffaf0 ldr r2, .LC0 ldr r2, [r2] umull r1, r0, r2, r0 @ r0-r1 = r0 * loops_per_jiffy adds r1, r1, #0xffffffff @ rounding up ... adcs r0, r0, r0 @ and right shift by 31 reteq lr + b __loop_delay +SYM_FUNC_END(__loop_const_udelay) .align 3 @ Delay routine -ENTRY(__loop_delay) +SYM_TYPED_FUNC_START(__loop_delay) subs r0, r0, #1 #if 0 retls lr @@ -58,6 +64,4 @@ ENTRY(__loop_delay) #endif bhi __loop_delay ret lr -ENDPROC(__loop_udelay) -ENDPROC(__loop_const_udelay) -ENDPROC(__loop_delay) +SYM_FUNC_END(__loop_delay) diff --git a/arch/arm/mm/Makefile b/arch/arm/mm/Makefile index 71b858c9b10c..f1f231f20ff9 100644 --- a/arch/arm/mm/Makefile +++ b/arch/arm/mm/Makefile @@ -45,6 +45,7 @@ obj-$(CONFIG_CPU_CACHE_V7) += cache-v7.o obj-$(CONFIG_CPU_CACHE_FA) += cache-fa.o obj-$(CONFIG_CPU_CACHE_NOP) += cache-nop.o obj-$(CONFIG_CPU_CACHE_V7M) += cache-v7m.o +obj-y += cache.o obj-$(CONFIG_CPU_COPY_V4WT) += copypage-v4wt.o obj-$(CONFIG_CPU_COPY_V4WB) += copypage-v4wb.o @@ -62,6 +63,7 @@ obj-$(CONFIG_CPU_TLB_FEROCEON) += tlb-v4wbi.o # reuse v4wbi TLB functions obj-$(CONFIG_CPU_TLB_V6) += tlb-v6.o obj-$(CONFIG_CPU_TLB_V7) += tlb-v7.o obj-$(CONFIG_CPU_TLB_FA) += tlb-fa.o +obj-y += tlb.o obj-$(CONFIG_CPU_ARM7TDMI) += proc-arm7tdmi.o obj-$(CONFIG_CPU_ARM720T) += proc-arm720.o @@ -88,6 +90,7 @@ obj-$(CONFIG_CPU_V6) += proc-v6.o obj-$(CONFIG_CPU_V6K) += proc-v6.o obj-$(CONFIG_CPU_V7) += proc-v7.o proc-v7-bugs.o obj-$(CONFIG_CPU_V7M) += proc-v7m.o +obj-$(CONFIG_CFI_CLANG) += proc.o obj-$(CONFIG_OUTER_CACHE) += l2c-common.o obj-$(CONFIG_CACHE_B15_RAC) += cache-b15-rac.o diff --git a/arch/arm/mm/cache-b15-rac.c b/arch/arm/mm/cache-b15-rac.c index 9c1172f26885..6f63b90f9e1a 100644 --- a/arch/arm/mm/cache-b15-rac.c +++ b/arch/arm/mm/cache-b15-rac.c @@ -5,6 +5,7 @@ * Copyright (C) 2015-2016 Broadcom */ +#include <linux/cfi_types.h> #include <linux/err.h> #include <linux/spinlock.h> #include <linux/io.h> diff --git a/arch/arm/mm/cache-fa.S b/arch/arm/mm/cache-fa.S index 71c64e92dead..4a3668b52a2d 100644 --- a/arch/arm/mm/cache-fa.S +++ b/arch/arm/mm/cache-fa.S @@ -12,6 +12,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/page.h> @@ -39,11 +40,11 @@ * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(fa_flush_icache_all) +SYM_TYPED_FUNC_START(fa_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(fa_flush_icache_all) +SYM_FUNC_END(fa_flush_icache_all) /* * flush_user_cache_all() @@ -51,14 +52,14 @@ ENDPROC(fa_flush_icache_all) * Clean and invalidate all cache entries in a particular address * space. */ -ENTRY(fa_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(fa_flush_user_cache_all, fa_flush_kern_cache_all) + /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(fa_flush_kern_cache_all) +SYM_TYPED_FUNC_START(fa_flush_kern_cache_all) mov ip, #0 mov r2, #VM_EXEC __flush_whole_cache: @@ -69,6 +70,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c10, 4 @ drain write buffer mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush ret lr +SYM_FUNC_END(fa_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -80,7 +82,7 @@ __flush_whole_cache: * - end - end address (exclusive, page aligned) * - flags - vma_area_struct flags describing address space */ -ENTRY(fa_flush_user_cache_range) +SYM_TYPED_FUNC_START(fa_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @ total size >= limit? @@ -97,6 +99,7 @@ ENTRY(fa_flush_user_cache_range) mcrne p15, 0, ip, c7, c10, 4 @ data write barrier mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush ret lr +SYM_FUNC_END(fa_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -108,8 +111,11 @@ ENTRY(fa_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(fa_coherent_kern_range) - /* fall through */ +SYM_TYPED_FUNC_START(fa_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b fa_coherent_user_range +#endif +SYM_FUNC_END(fa_coherent_kern_range) /* * coherent_user_range(start, end) @@ -121,7 +127,7 @@ ENTRY(fa_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(fa_coherent_user_range) +SYM_TYPED_FUNC_START(fa_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c14, 1 @ clean and invalidate D entry mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry @@ -133,6 +139,7 @@ ENTRY(fa_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ drain write buffer mcr p15, 0, r0, c7, c5, 4 @ prefetch flush ret lr +SYM_FUNC_END(fa_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -143,7 +150,7 @@ ENTRY(fa_coherent_user_range) * - addr - kernel address * - size - size of region */ -ENTRY(fa_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(fa_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean & invalidate D line add r0, r0, #CACHE_DLINESIZE @@ -153,6 +160,7 @@ ENTRY(fa_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain write buffer ret lr +SYM_FUNC_END(fa_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -203,7 +211,7 @@ fa_dma_clean_range: * - start - virtual start address of region * - end - virtual end address of region */ -ENTRY(fa_dma_flush_range) +SYM_TYPED_FUNC_START(fa_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c14, 1 @ clean & invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -212,6 +220,7 @@ ENTRY(fa_dma_flush_range) mov r0, #0 mcr p15, 0, r0, c7, c10, 4 @ drain write buffer ret lr +SYM_FUNC_END(fa_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -219,13 +228,13 @@ ENTRY(fa_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(fa_dma_map_area) +SYM_TYPED_FUNC_START(fa_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq fa_dma_clean_range bcs fa_dma_inv_range b fa_dma_flush_range -ENDPROC(fa_dma_map_area) +SYM_FUNC_END(fa_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -233,14 +242,6 @@ ENDPROC(fa_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(fa_dma_unmap_area) +SYM_TYPED_FUNC_START(fa_dma_unmap_area) ret lr -ENDPROC(fa_dma_unmap_area) - - .globl fa_flush_kern_cache_louis - .equ fa_flush_kern_cache_louis, fa_flush_kern_cache_all - - __INITDATA - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions fa +SYM_FUNC_END(fa_dma_unmap_area) diff --git a/arch/arm/mm/cache-nop.S b/arch/arm/mm/cache-nop.S index 72d939ef8798..f68dde2014ee 100644 --- a/arch/arm/mm/cache-nop.S +++ b/arch/arm/mm/cache-nop.S @@ -1,47 +1,52 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include "proc-macros.S" -ENTRY(nop_flush_icache_all) +/* + * These are all open-coded instead of aliased, to make clear + * what is going on here: all functions are stubbed out. + */ +SYM_TYPED_FUNC_START(nop_flush_icache_all) ret lr -ENDPROC(nop_flush_icache_all) +SYM_FUNC_END(nop_flush_icache_all) - .globl nop_flush_kern_cache_all - .equ nop_flush_kern_cache_all, nop_flush_icache_all - - .globl nop_flush_kern_cache_louis - .equ nop_flush_kern_cache_louis, nop_flush_icache_all +SYM_TYPED_FUNC_START(nop_flush_kern_cache_all) + ret lr +SYM_FUNC_END(nop_flush_kern_cache_all) - .globl nop_flush_user_cache_all - .equ nop_flush_user_cache_all, nop_flush_icache_all +SYM_TYPED_FUNC_START(nop_flush_user_cache_all) + ret lr +SYM_FUNC_END(nop_flush_user_cache_all) - .globl nop_flush_user_cache_range - .equ nop_flush_user_cache_range, nop_flush_icache_all +SYM_TYPED_FUNC_START(nop_flush_user_cache_range) + ret lr +SYM_FUNC_END(nop_flush_user_cache_range) - .globl nop_coherent_kern_range - .equ nop_coherent_kern_range, nop_flush_icache_all +SYM_TYPED_FUNC_START(nop_coherent_kern_range) + ret lr +SYM_FUNC_END(nop_coherent_kern_range) -ENTRY(nop_coherent_user_range) +SYM_TYPED_FUNC_START(nop_coherent_user_range) mov r0, 0 ret lr -ENDPROC(nop_coherent_user_range) - - .globl nop_flush_kern_dcache_area - .equ nop_flush_kern_dcache_area, nop_flush_icache_all +SYM_FUNC_END(nop_coherent_user_range) - .globl nop_dma_flush_range - .equ nop_dma_flush_range, nop_flush_icache_all - - .globl nop_dma_map_area - .equ nop_dma_map_area, nop_flush_icache_all +SYM_TYPED_FUNC_START(nop_flush_kern_dcache_area) + ret lr +SYM_FUNC_END(nop_flush_kern_dcache_area) - .globl nop_dma_unmap_area - .equ nop_dma_unmap_area, nop_flush_icache_all +SYM_TYPED_FUNC_START(nop_dma_flush_range) + ret lr +SYM_FUNC_END(nop_dma_flush_range) - __INITDATA +SYM_TYPED_FUNC_START(nop_dma_map_area) + ret lr +SYM_FUNC_END(nop_dma_map_area) - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions nop +SYM_TYPED_FUNC_START(nop_dma_unmap_area) + ret lr +SYM_FUNC_END(nop_dma_unmap_area) diff --git a/arch/arm/mm/cache-v4.S b/arch/arm/mm/cache-v4.S index 7787057e4990..0e94e5193dbd 100644 --- a/arch/arm/mm/cache-v4.S +++ b/arch/arm/mm/cache-v4.S @@ -6,6 +6,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/page.h> #include "proc-macros.S" @@ -15,9 +16,9 @@ * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(v4_flush_icache_all) +SYM_TYPED_FUNC_START(v4_flush_icache_all) ret lr -ENDPROC(v4_flush_icache_all) +SYM_FUNC_END(v4_flush_icache_all) /* * flush_user_cache_all() @@ -27,21 +28,22 @@ ENDPROC(v4_flush_icache_all) * * - mm - mm_struct describing address space */ -ENTRY(v4_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(v4_flush_user_cache_all, v4_flush_kern_cache_all) + /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(v4_flush_kern_cache_all) +SYM_TYPED_FUNC_START(v4_flush_kern_cache_all) #ifdef CONFIG_CPU_CP15 mov r0, #0 mcr p15, 0, r0, c7, c7, 0 @ flush ID cache ret lr #else - /* FALLTHROUGH */ + ret lr #endif +SYM_FUNC_END(v4_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -53,14 +55,15 @@ ENTRY(v4_flush_kern_cache_all) * - end - end address (exclusive, may not be aligned) * - flags - vma_area_struct flags describing address space */ -ENTRY(v4_flush_user_cache_range) +SYM_TYPED_FUNC_START(v4_flush_user_cache_range) #ifdef CONFIG_CPU_CP15 mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ flush ID cache ret lr #else - /* FALLTHROUGH */ + ret lr #endif +SYM_FUNC_END(v4_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -72,8 +75,9 @@ ENTRY(v4_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(v4_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(v4_coherent_kern_range) + ret lr +SYM_FUNC_END(v4_coherent_kern_range) /* * coherent_user_range(start, end) @@ -85,9 +89,10 @@ ENTRY(v4_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(v4_coherent_user_range) +SYM_TYPED_FUNC_START(v4_coherent_user_range) mov r0, #0 ret lr +SYM_FUNC_END(v4_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -98,8 +103,11 @@ ENTRY(v4_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(v4_flush_kern_dcache_area) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(v4_flush_kern_dcache_area) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b v4_dma_flush_range +#endif +SYM_FUNC_END(v4_flush_kern_dcache_area) /* * dma_flush_range(start, end) @@ -109,12 +117,13 @@ ENTRY(v4_flush_kern_dcache_area) * - start - virtual start address * - end - virtual end address */ -ENTRY(v4_dma_flush_range) +SYM_TYPED_FUNC_START(v4_dma_flush_range) #ifdef CONFIG_CPU_CP15 mov r0, #0 mcr p15, 0, r0, c7, c7, 0 @ flush ID cache #endif ret lr +SYM_FUNC_END(v4_dma_flush_range) /* * dma_unmap_area(start, size, dir) @@ -122,10 +131,11 @@ ENTRY(v4_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(v4_dma_unmap_area) +SYM_TYPED_FUNC_START(v4_dma_unmap_area) teq r2, #DMA_TO_DEVICE bne v4_dma_flush_range - /* FALLTHROUGH */ + ret lr +SYM_FUNC_END(v4_dma_unmap_area) /* * dma_map_area(start, size, dir) @@ -133,15 +143,6 @@ ENTRY(v4_dma_unmap_area) * - size - size of region * - dir - DMA direction */ -ENTRY(v4_dma_map_area) +SYM_TYPED_FUNC_START(v4_dma_map_area) ret lr -ENDPROC(v4_dma_unmap_area) -ENDPROC(v4_dma_map_area) - - .globl v4_flush_kern_cache_louis - .equ v4_flush_kern_cache_louis, v4_flush_kern_cache_all - - __INITDATA - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions v4 +SYM_FUNC_END(v4_dma_map_area) diff --git a/arch/arm/mm/cache-v4wb.S b/arch/arm/mm/cache-v4wb.S index ad382cee0fdb..ce55a2eef5da 100644 --- a/arch/arm/mm/cache-v4wb.S +++ b/arch/arm/mm/cache-v4wb.S @@ -6,6 +6,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/page.h> #include "proc-macros.S" @@ -53,11 +54,11 @@ flush_base: * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(v4wb_flush_icache_all) +SYM_TYPED_FUNC_START(v4wb_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(v4wb_flush_icache_all) +SYM_FUNC_END(v4wb_flush_icache_all) /* * flush_user_cache_all() @@ -65,14 +66,14 @@ ENDPROC(v4wb_flush_icache_all) * Clean and invalidate all cache entries in a particular address * space. */ -ENTRY(v4wb_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(v4wb_flush_user_cache_all, v4wb_flush_kern_cache_all) + /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(v4wb_flush_kern_cache_all) +SYM_TYPED_FUNC_START(v4wb_flush_kern_cache_all) mov ip, #0 mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache __flush_whole_cache: @@ -93,6 +94,7 @@ __flush_whole_cache: #endif mcr p15, 0, ip, c7, c10, 4 @ drain write buffer ret lr +SYM_FUNC_END(v4wb_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -104,7 +106,7 @@ __flush_whole_cache: * - end - end address (exclusive, page aligned) * - flags - vma_area_struct flags describing address space */ -ENTRY(v4wb_flush_user_cache_range) +SYM_TYPED_FUNC_START(v4wb_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size tst r2, #VM_EXEC @ executable region? @@ -121,6 +123,7 @@ ENTRY(v4wb_flush_user_cache_range) tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c10, 4 @ drain write buffer ret lr +SYM_FUNC_END(v4wb_flush_user_cache_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -131,9 +134,12 @@ ENTRY(v4wb_flush_user_cache_range) * - addr - kernel address * - size - region size */ -ENTRY(v4wb_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(v4wb_flush_kern_dcache_area) add r1, r0, r1 - /* fall through */ +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b v4wb_coherent_user_range +#endif +SYM_FUNC_END(v4wb_flush_kern_dcache_area) /* * coherent_kern_range(start, end) @@ -145,8 +151,11 @@ ENTRY(v4wb_flush_kern_dcache_area) * - start - virtual start address * - end - virtual end address */ -ENTRY(v4wb_coherent_kern_range) - /* fall through */ +SYM_TYPED_FUNC_START(v4wb_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b v4wb_coherent_user_range +#endif +SYM_FUNC_END(v4wb_coherent_kern_range) /* * coherent_user_range(start, end) @@ -158,7 +167,7 @@ ENTRY(v4wb_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(v4wb_coherent_user_range) +SYM_TYPED_FUNC_START(v4wb_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry @@ -169,7 +178,7 @@ ENTRY(v4wb_coherent_user_range) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr - +SYM_FUNC_END(v4wb_coherent_user_range) /* * dma_inv_range(start, end) @@ -231,13 +240,13 @@ v4wb_dma_clean_range: * - size - size of region * - dir - DMA direction */ -ENTRY(v4wb_dma_map_area) +SYM_TYPED_FUNC_START(v4wb_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq v4wb_dma_clean_range bcs v4wb_dma_inv_range b v4wb_dma_flush_range -ENDPROC(v4wb_dma_map_area) +SYM_FUNC_END(v4wb_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -245,14 +254,6 @@ ENDPROC(v4wb_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(v4wb_dma_unmap_area) +SYM_TYPED_FUNC_START(v4wb_dma_unmap_area) ret lr -ENDPROC(v4wb_dma_unmap_area) - - .globl v4wb_flush_kern_cache_louis - .equ v4wb_flush_kern_cache_louis, v4wb_flush_kern_cache_all - - __INITDATA - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions v4wb +SYM_FUNC_END(v4wb_dma_unmap_area) diff --git a/arch/arm/mm/cache-v4wt.S b/arch/arm/mm/cache-v4wt.S index 0b290c25a99d..a97dc267b3b0 100644 --- a/arch/arm/mm/cache-v4wt.S +++ b/arch/arm/mm/cache-v4wt.S @@ -10,6 +10,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/page.h> #include "proc-macros.S" @@ -43,11 +44,11 @@ * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(v4wt_flush_icache_all) +SYM_TYPED_FUNC_START(v4wt_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(v4wt_flush_icache_all) +SYM_FUNC_END(v4wt_flush_icache_all) /* * flush_user_cache_all() @@ -55,14 +56,14 @@ ENDPROC(v4wt_flush_icache_all) * Invalidate all cache entries in a particular address * space. */ -ENTRY(v4wt_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(v4wt_flush_user_cache_all, v4wt_flush_kern_cache_all) + /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(v4wt_flush_kern_cache_all) +SYM_TYPED_FUNC_START(v4wt_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -70,6 +71,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcr p15, 0, ip, c7, c6, 0 @ invalidate D cache ret lr +SYM_FUNC_END(v4wt_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -81,7 +83,7 @@ __flush_whole_cache: * - end - end address (exclusive, page aligned) * - flags - vma_area_struct flags describing address space */ -ENTRY(v4wt_flush_user_cache_range) +SYM_TYPED_FUNC_START(v4wt_flush_user_cache_range) sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT bhs __flush_whole_cache @@ -93,6 +95,7 @@ ENTRY(v4wt_flush_user_cache_range) cmp r0, r1 blo 1b ret lr +SYM_FUNC_END(v4wt_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -104,8 +107,11 @@ ENTRY(v4wt_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(v4wt_coherent_kern_range) - /* FALLTRHOUGH */ +SYM_TYPED_FUNC_START(v4wt_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b v4wt_coherent_user_range +#endif +SYM_FUNC_END(v4wt_coherent_kern_range) /* * coherent_user_range(start, end) @@ -117,7 +123,7 @@ ENTRY(v4wt_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(v4wt_coherent_user_range) +SYM_TYPED_FUNC_START(v4wt_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry add r0, r0, #CACHE_DLINESIZE @@ -125,6 +131,7 @@ ENTRY(v4wt_coherent_user_range) blo 1b mov r0, #0 ret lr +SYM_FUNC_END(v4wt_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -135,11 +142,12 @@ ENTRY(v4wt_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(v4wt_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(v4wt_flush_kern_dcache_area) mov r2, #0 mcr p15, 0, r2, c7, c5, 0 @ invalidate I cache add r1, r0, r1 - /* fallthrough */ + b v4wt_dma_inv_range +SYM_FUNC_END(v4wt_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -167,9 +175,10 @@ v4wt_dma_inv_range: * * - start - virtual start address * - end - virtual end address - */ - .globl v4wt_dma_flush_range - .equ v4wt_dma_flush_range, v4wt_dma_inv_range +*/ +SYM_TYPED_FUNC_START(v4wt_dma_flush_range) + b v4wt_dma_inv_range +SYM_FUNC_END(v4wt_dma_flush_range) /* * dma_unmap_area(start, size, dir) @@ -177,11 +186,12 @@ v4wt_dma_inv_range: * - size - size of region * - dir - DMA direction */ -ENTRY(v4wt_dma_unmap_area) +SYM_TYPED_FUNC_START(v4wt_dma_unmap_area) add r1, r1, r0 teq r2, #DMA_TO_DEVICE bne v4wt_dma_inv_range - /* FALLTHROUGH */ + ret lr +SYM_FUNC_END(v4wt_dma_unmap_area) /* * dma_map_area(start, size, dir) @@ -189,15 +199,6 @@ ENTRY(v4wt_dma_unmap_area) * - size - size of region * - dir - DMA direction */ -ENTRY(v4wt_dma_map_area) +SYM_TYPED_FUNC_START(v4wt_dma_map_area) ret lr -ENDPROC(v4wt_dma_unmap_area) -ENDPROC(v4wt_dma_map_area) - - .globl v4wt_flush_kern_cache_louis - .equ v4wt_flush_kern_cache_louis, v4wt_flush_kern_cache_all - - __INITDATA - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions v4wt +SYM_FUNC_END(v4wt_dma_map_area) diff --git a/arch/arm/mm/cache-v6.S b/arch/arm/mm/cache-v6.S index 44211d8a296f..9f415476e218 100644 --- a/arch/arm/mm/cache-v6.S +++ b/arch/arm/mm/cache-v6.S @@ -8,6 +8,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/errno.h> #include <asm/unwind.h> @@ -34,7 +35,7 @@ * r0 - set to 0 * r1 - corrupted */ -ENTRY(v6_flush_icache_all) +SYM_TYPED_FUNC_START(v6_flush_icache_all) mov r0, #0 #ifdef CONFIG_ARM_ERRATA_411920 mrs r1, cpsr @@ -51,7 +52,7 @@ ENTRY(v6_flush_icache_all) mcr p15, 0, r0, c7, c5, 0 @ invalidate I-cache #endif ret lr -ENDPROC(v6_flush_icache_all) +SYM_FUNC_END(v6_flush_icache_all) /* * v6_flush_cache_all() @@ -60,7 +61,7 @@ ENDPROC(v6_flush_icache_all) * * It is assumed that: */ -ENTRY(v6_flush_kern_cache_all) +SYM_TYPED_FUNC_START(v6_flush_kern_cache_all) mov r0, #0 #ifdef HARVARD_CACHE mcr p15, 0, r0, c7, c14, 0 @ D cache clean+invalidate @@ -73,6 +74,7 @@ ENTRY(v6_flush_kern_cache_all) mcr p15, 0, r0, c7, c15, 0 @ Cache clean+invalidate #endif ret lr +SYM_FUNC_END(v6_flush_kern_cache_all) /* * v6_flush_cache_all() @@ -81,8 +83,9 @@ ENTRY(v6_flush_kern_cache_all) * * - mm - mm_struct describing address space */ -ENTRY(v6_flush_user_cache_all) - /*FALLTHROUGH*/ +SYM_TYPED_FUNC_START(v6_flush_user_cache_all) + ret lr +SYM_FUNC_END(v6_flush_user_cache_all) /* * v6_flush_cache_range(start, end, flags) @@ -96,8 +99,9 @@ ENTRY(v6_flush_user_cache_all) * It is assumed that: * - we have a VIPT cache. */ -ENTRY(v6_flush_user_cache_range) +SYM_TYPED_FUNC_START(v6_flush_user_cache_range) ret lr +SYM_FUNC_END(v6_flush_user_cache_range) /* * v6_coherent_kern_range(start,end) @@ -112,8 +116,11 @@ ENTRY(v6_flush_user_cache_range) * It is assumed that: * - the Icache does not read data from the write buffer */ -ENTRY(v6_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(v6_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b v6_coherent_user_range +#endif +SYM_FUNC_END(v6_coherent_kern_range) /* * v6_coherent_user_range(start,end) @@ -128,7 +135,7 @@ ENTRY(v6_coherent_kern_range) * It is assumed that: * - the Icache does not read data from the write buffer */ -ENTRY(v6_coherent_user_range) +SYM_TYPED_FUNC_START(v6_coherent_user_range) UNWIND(.fnstart ) #ifdef HARVARD_CACHE bic r0, r0, #CACHE_LINE_SIZE - 1 @@ -159,8 +166,7 @@ ENTRY(v6_coherent_user_range) mov r0, #-EFAULT ret lr UNWIND(.fnend ) -ENDPROC(v6_coherent_user_range) -ENDPROC(v6_coherent_kern_range) +SYM_FUNC_END(v6_coherent_user_range) /* * v6_flush_kern_dcache_area(void *addr, size_t size) @@ -171,7 +177,7 @@ ENDPROC(v6_coherent_kern_range) * - addr - kernel address * - size - region size */ -ENTRY(v6_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(v6_flush_kern_dcache_area) add r1, r0, r1 bic r0, r0, #D_CACHE_LINE_SIZE - 1 1: @@ -188,7 +194,7 @@ ENTRY(v6_flush_kern_dcache_area) mcr p15, 0, r0, c7, c10, 4 #endif ret lr - +SYM_FUNC_END(v6_flush_kern_dcache_area) /* * v6_dma_inv_range(start,end) @@ -253,7 +259,7 @@ v6_dma_clean_range: * - start - virtual start address of region * - end - virtual end address of region */ -ENTRY(v6_dma_flush_range) +SYM_TYPED_FUNC_START(v6_dma_flush_range) bic r0, r0, #D_CACHE_LINE_SIZE - 1 1: #ifdef HARVARD_CACHE @@ -267,6 +273,7 @@ ENTRY(v6_dma_flush_range) mov r0, #0 mcr p15, 0, r0, c7, c10, 4 @ drain write buffer ret lr +SYM_FUNC_END(v6_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -274,12 +281,12 @@ ENTRY(v6_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(v6_dma_map_area) +SYM_TYPED_FUNC_START(v6_dma_map_area) add r1, r1, r0 teq r2, #DMA_FROM_DEVICE beq v6_dma_inv_range b v6_dma_clean_range -ENDPROC(v6_dma_map_area) +SYM_FUNC_END(v6_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -287,17 +294,9 @@ ENDPROC(v6_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(v6_dma_unmap_area) +SYM_TYPED_FUNC_START(v6_dma_unmap_area) add r1, r1, r0 teq r2, #DMA_TO_DEVICE bne v6_dma_inv_range ret lr -ENDPROC(v6_dma_unmap_area) - - .globl v6_flush_kern_cache_louis - .equ v6_flush_kern_cache_louis, v6_flush_kern_cache_all - - __INITDATA - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions v6 +SYM_FUNC_END(v6_dma_unmap_area) diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index 127afe2096ba..201ca05436fa 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -9,6 +9,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/errno.h> #include <asm/unwind.h> @@ -80,12 +81,12 @@ ENDPROC(v7_invalidate_l1) * Registers: * r0 - set to 0 */ -ENTRY(v7_flush_icache_all) +SYM_TYPED_FUNC_START(v7_flush_icache_all) mov r0, #0 ALT_SMP(mcr p15, 0, r0, c7, c1, 0) @ invalidate I-cache inner shareable ALT_UP(mcr p15, 0, r0, c7, c5, 0) @ I+BTB cache invalidate ret lr -ENDPROC(v7_flush_icache_all) +SYM_FUNC_END(v7_flush_icache_all) /* * v7_flush_dcache_louis() @@ -193,7 +194,7 @@ ENDPROC(v7_flush_dcache_all) * unification in a single instruction. * */ -ENTRY(v7_flush_kern_cache_all) +SYM_TYPED_FUNC_START(v7_flush_kern_cache_all) stmfd sp!, {r4-r6, r9-r10, lr} bl v7_flush_dcache_all mov r0, #0 @@ -201,7 +202,7 @@ ENTRY(v7_flush_kern_cache_all) ALT_UP(mcr p15, 0, r0, c7, c5, 0) @ I+BTB cache invalidate ldmfd sp!, {r4-r6, r9-r10, lr} ret lr -ENDPROC(v7_flush_kern_cache_all) +SYM_FUNC_END(v7_flush_kern_cache_all) /* * v7_flush_kern_cache_louis(void) @@ -209,7 +210,7 @@ ENDPROC(v7_flush_kern_cache_all) * Flush the data cache up to Level of Unification Inner Shareable. * Invalidate the I-cache to the point of unification. */ -ENTRY(v7_flush_kern_cache_louis) +SYM_TYPED_FUNC_START(v7_flush_kern_cache_louis) stmfd sp!, {r4-r6, r9-r10, lr} bl v7_flush_dcache_louis mov r0, #0 @@ -217,7 +218,7 @@ ENTRY(v7_flush_kern_cache_louis) ALT_UP(mcr p15, 0, r0, c7, c5, 0) @ I+BTB cache invalidate ldmfd sp!, {r4-r6, r9-r10, lr} ret lr -ENDPROC(v7_flush_kern_cache_louis) +SYM_FUNC_END(v7_flush_kern_cache_louis) /* * v7_flush_cache_all() @@ -226,8 +227,9 @@ ENDPROC(v7_flush_kern_cache_louis) * * - mm - mm_struct describing address space */ -ENTRY(v7_flush_user_cache_all) - /*FALLTHROUGH*/ +SYM_TYPED_FUNC_START(v7_flush_user_cache_all) + ret lr +SYM_FUNC_END(v7_flush_user_cache_all) /* * v7_flush_cache_range(start, end, flags) @@ -241,10 +243,9 @@ ENTRY(v7_flush_user_cache_all) * It is assumed that: * - we have a VIPT cache. */ -ENTRY(v7_flush_user_cache_range) +SYM_TYPED_FUNC_START(v7_flush_user_cache_range) ret lr -ENDPROC(v7_flush_user_cache_all) -ENDPROC(v7_flush_user_cache_range) +SYM_FUNC_END(v7_flush_user_cache_range) /* * v7_coherent_kern_range(start,end) @@ -259,8 +260,11 @@ ENDPROC(v7_flush_user_cache_range) * It is assumed that: * - the Icache does not read data from the write buffer */ -ENTRY(v7_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(v7_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b v7_coherent_user_range +#endif +SYM_FUNC_END(v7_coherent_kern_range) /* * v7_coherent_user_range(start,end) @@ -275,7 +279,7 @@ ENTRY(v7_coherent_kern_range) * It is assumed that: * - the Icache does not read data from the write buffer */ -ENTRY(v7_coherent_user_range) +SYM_TYPED_FUNC_START(v7_coherent_user_range) UNWIND(.fnstart ) dcache_line_size r2, r3 sub r3, r2, #1 @@ -321,8 +325,7 @@ ENTRY(v7_coherent_user_range) mov r0, #-EFAULT ret lr UNWIND(.fnend ) -ENDPROC(v7_coherent_kern_range) -ENDPROC(v7_coherent_user_range) +SYM_FUNC_END(v7_coherent_user_range) /* * v7_flush_kern_dcache_area(void *addr, size_t size) @@ -333,7 +336,7 @@ ENDPROC(v7_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(v7_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(v7_flush_kern_dcache_area) dcache_line_size r2, r3 add r1, r0, r1 sub r3, r2, #1 @@ -349,7 +352,7 @@ ENTRY(v7_flush_kern_dcache_area) blo 1b dsb st ret lr -ENDPROC(v7_flush_kern_dcache_area) +SYM_FUNC_END(v7_flush_kern_dcache_area) /* * v7_dma_inv_range(start,end) @@ -413,7 +416,7 @@ ENDPROC(v7_dma_clean_range) * - start - virtual start address of region * - end - virtual end address of region */ -ENTRY(v7_dma_flush_range) +SYM_TYPED_FUNC_START(v7_dma_flush_range) dcache_line_size r2, r3 sub r3, r2, #1 bic r0, r0, r3 @@ -428,7 +431,7 @@ ENTRY(v7_dma_flush_range) blo 1b dsb st ret lr -ENDPROC(v7_dma_flush_range) +SYM_FUNC_END(v7_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -436,12 +439,12 @@ ENDPROC(v7_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(v7_dma_map_area) +SYM_TYPED_FUNC_START(v7_dma_map_area) add r1, r1, r0 teq r2, #DMA_FROM_DEVICE beq v7_dma_inv_range b v7_dma_clean_range -ENDPROC(v7_dma_map_area) +SYM_FUNC_END(v7_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -449,34 +452,9 @@ ENDPROC(v7_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(v7_dma_unmap_area) +SYM_TYPED_FUNC_START(v7_dma_unmap_area) add r1, r1, r0 teq r2, #DMA_TO_DEVICE bne v7_dma_inv_range ret lr -ENDPROC(v7_dma_unmap_area) - - __INITDATA - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions v7 - - /* The Broadcom Brahma-B15 read-ahead cache requires some modifications - * to the v7_cache_fns, we only override the ones we need - */ -#ifndef CONFIG_CACHE_B15_RAC - globl_equ b15_flush_kern_cache_all, v7_flush_kern_cache_all -#endif - globl_equ b15_flush_icache_all, v7_flush_icache_all - globl_equ b15_flush_kern_cache_louis, v7_flush_kern_cache_louis - globl_equ b15_flush_user_cache_all, v7_flush_user_cache_all - globl_equ b15_flush_user_cache_range, v7_flush_user_cache_range - globl_equ b15_coherent_kern_range, v7_coherent_kern_range - globl_equ b15_coherent_user_range, v7_coherent_user_range - globl_equ b15_flush_kern_dcache_area, v7_flush_kern_dcache_area - - globl_equ b15_dma_map_area, v7_dma_map_area - globl_equ b15_dma_unmap_area, v7_dma_unmap_area - globl_equ b15_dma_flush_range, v7_dma_flush_range - - define_cache_functions b15 +SYM_FUNC_END(v7_dma_unmap_area) diff --git a/arch/arm/mm/cache-v7m.S b/arch/arm/mm/cache-v7m.S index eb60b5e5e2ad..14d719eba729 100644 --- a/arch/arm/mm/cache-v7m.S +++ b/arch/arm/mm/cache-v7m.S @@ -11,6 +11,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/errno.h> #include <asm/unwind.h> @@ -159,10 +160,10 @@ ENDPROC(v7m_invalidate_l1) * Registers: * r0 - set to 0 */ -ENTRY(v7m_flush_icache_all) +SYM_TYPED_FUNC_START(v7m_flush_icache_all) invalidate_icache r0 ret lr -ENDPROC(v7m_flush_icache_all) +SYM_FUNC_END(v7m_flush_icache_all) /* * v7m_flush_dcache_all() @@ -236,13 +237,13 @@ ENDPROC(v7m_flush_dcache_all) * unification in a single instruction. * */ -ENTRY(v7m_flush_kern_cache_all) +SYM_TYPED_FUNC_START(v7m_flush_kern_cache_all) stmfd sp!, {r4-r7, r9-r11, lr} bl v7m_flush_dcache_all invalidate_icache r0 ldmfd sp!, {r4-r7, r9-r11, lr} ret lr -ENDPROC(v7m_flush_kern_cache_all) +SYM_FUNC_END(v7m_flush_kern_cache_all) /* * v7m_flush_cache_all() @@ -251,8 +252,9 @@ ENDPROC(v7m_flush_kern_cache_all) * * - mm - mm_struct describing address space */ -ENTRY(v7m_flush_user_cache_all) - /*FALLTHROUGH*/ +SYM_TYPED_FUNC_START(v7m_flush_user_cache_all) + ret lr +SYM_FUNC_END(v7m_flush_user_cache_all) /* * v7m_flush_cache_range(start, end, flags) @@ -266,10 +268,9 @@ ENTRY(v7m_flush_user_cache_all) * It is assumed that: * - we have a VIPT cache. */ -ENTRY(v7m_flush_user_cache_range) +SYM_TYPED_FUNC_START(v7m_flush_user_cache_range) ret lr -ENDPROC(v7m_flush_user_cache_all) -ENDPROC(v7m_flush_user_cache_range) +SYM_FUNC_END(v7m_flush_user_cache_range) /* * v7m_coherent_kern_range(start,end) @@ -284,8 +285,11 @@ ENDPROC(v7m_flush_user_cache_range) * It is assumed that: * - the Icache does not read data from the write buffer */ -ENTRY(v7m_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(v7m_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b v7m_coherent_user_range +#endif +SYM_FUNC_END(v7m_coherent_kern_range) /* * v7m_coherent_user_range(start,end) @@ -300,7 +304,7 @@ ENTRY(v7m_coherent_kern_range) * It is assumed that: * - the Icache does not read data from the write buffer */ -ENTRY(v7m_coherent_user_range) +SYM_TYPED_FUNC_START(v7m_coherent_user_range) UNWIND(.fnstart ) dcache_line_size r2, r3 sub r3, r2, #1 @@ -328,8 +332,7 @@ ENTRY(v7m_coherent_user_range) isb ret lr UNWIND(.fnend ) -ENDPROC(v7m_coherent_kern_range) -ENDPROC(v7m_coherent_user_range) +SYM_FUNC_END(v7m_coherent_user_range) /* * v7m_flush_kern_dcache_area(void *addr, size_t size) @@ -340,7 +343,7 @@ ENDPROC(v7m_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(v7m_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(v7m_flush_kern_dcache_area) dcache_line_size r2, r3 add r1, r0, r1 sub r3, r2, #1 @@ -352,7 +355,7 @@ ENTRY(v7m_flush_kern_dcache_area) blo 1b dsb st ret lr -ENDPROC(v7m_flush_kern_dcache_area) +SYM_FUNC_END(v7m_flush_kern_dcache_area) /* * v7m_dma_inv_range(start,end) @@ -408,7 +411,7 @@ ENDPROC(v7m_dma_clean_range) * - start - virtual start address of region * - end - virtual end address of region */ -ENTRY(v7m_dma_flush_range) +SYM_TYPED_FUNC_START(v7m_dma_flush_range) dcache_line_size r2, r3 sub r3, r2, #1 bic r0, r0, r3 @@ -419,7 +422,7 @@ ENTRY(v7m_dma_flush_range) blo 1b dsb st ret lr -ENDPROC(v7m_dma_flush_range) +SYM_FUNC_END(v7m_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -427,12 +430,12 @@ ENDPROC(v7m_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(v7m_dma_map_area) +SYM_TYPED_FUNC_START(v7m_dma_map_area) add r1, r1, r0 teq r2, #DMA_FROM_DEVICE beq v7m_dma_inv_range b v7m_dma_clean_range -ENDPROC(v7m_dma_map_area) +SYM_FUNC_END(v7m_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -440,17 +443,9 @@ ENDPROC(v7m_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(v7m_dma_unmap_area) +SYM_TYPED_FUNC_START(v7m_dma_unmap_area) add r1, r1, r0 teq r2, #DMA_TO_DEVICE bne v7m_dma_inv_range ret lr -ENDPROC(v7m_dma_unmap_area) - - .globl v7m_flush_kern_cache_louis - .equ v7m_flush_kern_cache_louis, v7m_flush_kern_cache_all - - __INITDATA - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions v7m +SYM_FUNC_END(v7m_dma_unmap_area) diff --git a/arch/arm/mm/cache.c b/arch/arm/mm/cache.c new file mode 100644 index 000000000000..e6fbc599c9ed --- /dev/null +++ b/arch/arm/mm/cache.c @@ -0,0 +1,663 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * This file defines C prototypes for the low-level cache assembly functions + * and populates a vtable for each selected ARM CPU cache type. + */ + +#include <linux/types.h> +#include <asm/cacheflush.h> + +#ifdef CONFIG_CPU_CACHE_V4 +void v4_flush_icache_all(void); +void v4_flush_kern_cache_all(void); +void v4_flush_user_cache_all(void); +void v4_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void v4_coherent_kern_range(unsigned long, unsigned long); +int v4_coherent_user_range(unsigned long, unsigned long); +void v4_flush_kern_dcache_area(void *, size_t); +void v4_dma_map_area(const void *, size_t, int); +void v4_dma_unmap_area(const void *, size_t, int); +void v4_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns v4_cache_fns __initconst = { + .flush_icache_all = v4_flush_icache_all, + .flush_kern_all = v4_flush_kern_cache_all, + .flush_kern_louis = v4_flush_kern_cache_all, + .flush_user_all = v4_flush_user_cache_all, + .flush_user_range = v4_flush_user_cache_range, + .coherent_kern_range = v4_coherent_kern_range, + .coherent_user_range = v4_coherent_user_range, + .flush_kern_dcache_area = v4_flush_kern_dcache_area, + .dma_map_area = v4_dma_map_area, + .dma_unmap_area = v4_dma_unmap_area, + .dma_flush_range = v4_dma_flush_range, +}; +#endif + +/* V4 write-back cache "V4WB" */ +#ifdef CONFIG_CPU_CACHE_V4WB +void v4wb_flush_icache_all(void); +void v4wb_flush_kern_cache_all(void); +void v4wb_flush_user_cache_all(void); +void v4wb_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void v4wb_coherent_kern_range(unsigned long, unsigned long); +int v4wb_coherent_user_range(unsigned long, unsigned long); +void v4wb_flush_kern_dcache_area(void *, size_t); +void v4wb_dma_map_area(const void *, size_t, int); +void v4wb_dma_unmap_area(const void *, size_t, int); +void v4wb_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns v4wb_cache_fns __initconst = { + .flush_icache_all = v4wb_flush_icache_all, + .flush_kern_all = v4wb_flush_kern_cache_all, + .flush_kern_louis = v4wb_flush_kern_cache_all, + .flush_user_all = v4wb_flush_user_cache_all, + .flush_user_range = v4wb_flush_user_cache_range, + .coherent_kern_range = v4wb_coherent_kern_range, + .coherent_user_range = v4wb_coherent_user_range, + .flush_kern_dcache_area = v4wb_flush_kern_dcache_area, + .dma_map_area = v4wb_dma_map_area, + .dma_unmap_area = v4wb_dma_unmap_area, + .dma_flush_range = v4wb_dma_flush_range, +}; +#endif + +/* V4 write-through cache "V4WT" */ +#ifdef CONFIG_CPU_CACHE_V4WT +void v4wt_flush_icache_all(void); +void v4wt_flush_kern_cache_all(void); +void v4wt_flush_user_cache_all(void); +void v4wt_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void v4wt_coherent_kern_range(unsigned long, unsigned long); +int v4wt_coherent_user_range(unsigned long, unsigned long); +void v4wt_flush_kern_dcache_area(void *, size_t); +void v4wt_dma_map_area(const void *, size_t, int); +void v4wt_dma_unmap_area(const void *, size_t, int); +void v4wt_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns v4wt_cache_fns __initconst = { + .flush_icache_all = v4wt_flush_icache_all, + .flush_kern_all = v4wt_flush_kern_cache_all, + .flush_kern_louis = v4wt_flush_kern_cache_all, + .flush_user_all = v4wt_flush_user_cache_all, + .flush_user_range = v4wt_flush_user_cache_range, + .coherent_kern_range = v4wt_coherent_kern_range, + .coherent_user_range = v4wt_coherent_user_range, + .flush_kern_dcache_area = v4wt_flush_kern_dcache_area, + .dma_map_area = v4wt_dma_map_area, + .dma_unmap_area = v4wt_dma_unmap_area, + .dma_flush_range = v4wt_dma_flush_range, +}; +#endif + +/* Faraday FA526 cache */ +#ifdef CONFIG_CPU_CACHE_FA +void fa_flush_icache_all(void); +void fa_flush_kern_cache_all(void); +void fa_flush_user_cache_all(void); +void fa_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void fa_coherent_kern_range(unsigned long, unsigned long); +int fa_coherent_user_range(unsigned long, unsigned long); +void fa_flush_kern_dcache_area(void *, size_t); +void fa_dma_map_area(const void *, size_t, int); +void fa_dma_unmap_area(const void *, size_t, int); +void fa_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns fa_cache_fns __initconst = { + .flush_icache_all = fa_flush_icache_all, + .flush_kern_all = fa_flush_kern_cache_all, + .flush_kern_louis = fa_flush_kern_cache_all, + .flush_user_all = fa_flush_user_cache_all, + .flush_user_range = fa_flush_user_cache_range, + .coherent_kern_range = fa_coherent_kern_range, + .coherent_user_range = fa_coherent_user_range, + .flush_kern_dcache_area = fa_flush_kern_dcache_area, + .dma_map_area = fa_dma_map_area, + .dma_unmap_area = fa_dma_unmap_area, + .dma_flush_range = fa_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_CACHE_V6 +void v6_flush_icache_all(void); +void v6_flush_kern_cache_all(void); +void v6_flush_user_cache_all(void); +void v6_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void v6_coherent_kern_range(unsigned long, unsigned long); +int v6_coherent_user_range(unsigned long, unsigned long); +void v6_flush_kern_dcache_area(void *, size_t); +void v6_dma_map_area(const void *, size_t, int); +void v6_dma_unmap_area(const void *, size_t, int); +void v6_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns v6_cache_fns __initconst = { + .flush_icache_all = v6_flush_icache_all, + .flush_kern_all = v6_flush_kern_cache_all, + .flush_kern_louis = v6_flush_kern_cache_all, + .flush_user_all = v6_flush_user_cache_all, + .flush_user_range = v6_flush_user_cache_range, + .coherent_kern_range = v6_coherent_kern_range, + .coherent_user_range = v6_coherent_user_range, + .flush_kern_dcache_area = v6_flush_kern_dcache_area, + .dma_map_area = v6_dma_map_area, + .dma_unmap_area = v6_dma_unmap_area, + .dma_flush_range = v6_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_CACHE_V7 +void v7_flush_icache_all(void); +void v7_flush_kern_cache_all(void); +void v7_flush_kern_cache_louis(void); +void v7_flush_user_cache_all(void); +void v7_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void v7_coherent_kern_range(unsigned long, unsigned long); +int v7_coherent_user_range(unsigned long, unsigned long); +void v7_flush_kern_dcache_area(void *, size_t); +void v7_dma_map_area(const void *, size_t, int); +void v7_dma_unmap_area(const void *, size_t, int); +void v7_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns v7_cache_fns __initconst = { + .flush_icache_all = v7_flush_icache_all, + .flush_kern_all = v7_flush_kern_cache_all, + .flush_kern_louis = v7_flush_kern_cache_louis, + .flush_user_all = v7_flush_user_cache_all, + .flush_user_range = v7_flush_user_cache_range, + .coherent_kern_range = v7_coherent_kern_range, + .coherent_user_range = v7_coherent_user_range, + .flush_kern_dcache_area = v7_flush_kern_dcache_area, + .dma_map_area = v7_dma_map_area, + .dma_unmap_area = v7_dma_unmap_area, + .dma_flush_range = v7_dma_flush_range, +}; + +/* Special quirky cache flush function for Broadcom B15 v7 caches */ +void b15_flush_kern_cache_all(void); + +struct cpu_cache_fns b15_cache_fns __initconst = { + .flush_icache_all = v7_flush_icache_all, +#ifdef CONFIG_CACHE_B15_RAC + .flush_kern_all = b15_flush_kern_cache_all, +#else + .flush_kern_all = v7_flush_kern_cache_all, +#endif + .flush_kern_louis = v7_flush_kern_cache_louis, + .flush_user_all = v7_flush_user_cache_all, + .flush_user_range = v7_flush_user_cache_range, + .coherent_kern_range = v7_coherent_kern_range, + .coherent_user_range = v7_coherent_user_range, + .flush_kern_dcache_area = v7_flush_kern_dcache_area, + .dma_map_area = v7_dma_map_area, + .dma_unmap_area = v7_dma_unmap_area, + .dma_flush_range = v7_dma_flush_range, +}; +#endif + +/* The NOP cache is just a set of dummy stubs that by definition does nothing */ +#ifdef CONFIG_CPU_CACHE_NOP +void nop_flush_icache_all(void); +void nop_flush_kern_cache_all(void); +void nop_flush_user_cache_all(void); +void nop_flush_user_cache_range(unsigned long start, unsigned long end, unsigned int flags); +void nop_coherent_kern_range(unsigned long start, unsigned long end); +int nop_coherent_user_range(unsigned long, unsigned long); +void nop_flush_kern_dcache_area(void *kaddr, size_t size); +void nop_dma_map_area(const void *start, size_t size, int flags); +void nop_dma_unmap_area(const void *start, size_t size, int flags); +void nop_dma_flush_range(const void *start, const void *end); + +struct cpu_cache_fns nop_cache_fns __initconst = { + .flush_icache_all = nop_flush_icache_all, + .flush_kern_all = nop_flush_kern_cache_all, + .flush_kern_louis = nop_flush_kern_cache_all, + .flush_user_all = nop_flush_user_cache_all, + .flush_user_range = nop_flush_user_cache_range, + .coherent_kern_range = nop_coherent_kern_range, + .coherent_user_range = nop_coherent_user_range, + .flush_kern_dcache_area = nop_flush_kern_dcache_area, + .dma_map_area = nop_dma_map_area, + .dma_unmap_area = nop_dma_unmap_area, + .dma_flush_range = nop_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_CACHE_V7M +void v7m_flush_icache_all(void); +void v7m_flush_kern_cache_all(void); +void v7m_flush_user_cache_all(void); +void v7m_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void v7m_coherent_kern_range(unsigned long, unsigned long); +int v7m_coherent_user_range(unsigned long, unsigned long); +void v7m_flush_kern_dcache_area(void *, size_t); +void v7m_dma_map_area(const void *, size_t, int); +void v7m_dma_unmap_area(const void *, size_t, int); +void v7m_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns v7m_cache_fns __initconst = { + .flush_icache_all = v7m_flush_icache_all, + .flush_kern_all = v7m_flush_kern_cache_all, + .flush_kern_louis = v7m_flush_kern_cache_all, + .flush_user_all = v7m_flush_user_cache_all, + .flush_user_range = v7m_flush_user_cache_range, + .coherent_kern_range = v7m_coherent_kern_range, + .coherent_user_range = v7m_coherent_user_range, + .flush_kern_dcache_area = v7m_flush_kern_dcache_area, + .dma_map_area = v7m_dma_map_area, + .dma_unmap_area = v7m_dma_unmap_area, + .dma_flush_range = v7m_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_ARM1020 +void arm1020_flush_icache_all(void); +void arm1020_flush_kern_cache_all(void); +void arm1020_flush_user_cache_all(void); +void arm1020_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm1020_coherent_kern_range(unsigned long, unsigned long); +int arm1020_coherent_user_range(unsigned long, unsigned long); +void arm1020_flush_kern_dcache_area(void *, size_t); +void arm1020_dma_map_area(const void *, size_t, int); +void arm1020_dma_unmap_area(const void *, size_t, int); +void arm1020_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm1020_cache_fns __initconst = { + .flush_icache_all = arm1020_flush_icache_all, + .flush_kern_all = arm1020_flush_kern_cache_all, + .flush_kern_louis = arm1020_flush_kern_cache_all, + .flush_user_all = arm1020_flush_user_cache_all, + .flush_user_range = arm1020_flush_user_cache_range, + .coherent_kern_range = arm1020_coherent_kern_range, + .coherent_user_range = arm1020_coherent_user_range, + .flush_kern_dcache_area = arm1020_flush_kern_dcache_area, + .dma_map_area = arm1020_dma_map_area, + .dma_unmap_area = arm1020_dma_unmap_area, + .dma_flush_range = arm1020_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_ARM1020E +void arm1020e_flush_icache_all(void); +void arm1020e_flush_kern_cache_all(void); +void arm1020e_flush_user_cache_all(void); +void arm1020e_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm1020e_coherent_kern_range(unsigned long, unsigned long); +int arm1020e_coherent_user_range(unsigned long, unsigned long); +void arm1020e_flush_kern_dcache_area(void *, size_t); +void arm1020e_dma_map_area(const void *, size_t, int); +void arm1020e_dma_unmap_area(const void *, size_t, int); +void arm1020e_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm1020e_cache_fns __initconst = { + .flush_icache_all = arm1020e_flush_icache_all, + .flush_kern_all = arm1020e_flush_kern_cache_all, + .flush_kern_louis = arm1020e_flush_kern_cache_all, + .flush_user_all = arm1020e_flush_user_cache_all, + .flush_user_range = arm1020e_flush_user_cache_range, + .coherent_kern_range = arm1020e_coherent_kern_range, + .coherent_user_range = arm1020e_coherent_user_range, + .flush_kern_dcache_area = arm1020e_flush_kern_dcache_area, + .dma_map_area = arm1020e_dma_map_area, + .dma_unmap_area = arm1020e_dma_unmap_area, + .dma_flush_range = arm1020e_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_ARM1022 +void arm1022_flush_icache_all(void); +void arm1022_flush_kern_cache_all(void); +void arm1022_flush_user_cache_all(void); +void arm1022_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm1022_coherent_kern_range(unsigned long, unsigned long); +int arm1022_coherent_user_range(unsigned long, unsigned long); +void arm1022_flush_kern_dcache_area(void *, size_t); +void arm1022_dma_map_area(const void *, size_t, int); +void arm1022_dma_unmap_area(const void *, size_t, int); +void arm1022_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm1022_cache_fns __initconst = { + .flush_icache_all = arm1022_flush_icache_all, + .flush_kern_all = arm1022_flush_kern_cache_all, + .flush_kern_louis = arm1022_flush_kern_cache_all, + .flush_user_all = arm1022_flush_user_cache_all, + .flush_user_range = arm1022_flush_user_cache_range, + .coherent_kern_range = arm1022_coherent_kern_range, + .coherent_user_range = arm1022_coherent_user_range, + .flush_kern_dcache_area = arm1022_flush_kern_dcache_area, + .dma_map_area = arm1022_dma_map_area, + .dma_unmap_area = arm1022_dma_unmap_area, + .dma_flush_range = arm1022_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_ARM1026 +void arm1026_flush_icache_all(void); +void arm1026_flush_kern_cache_all(void); +void arm1026_flush_user_cache_all(void); +void arm1026_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm1026_coherent_kern_range(unsigned long, unsigned long); +int arm1026_coherent_user_range(unsigned long, unsigned long); +void arm1026_flush_kern_dcache_area(void *, size_t); +void arm1026_dma_map_area(const void *, size_t, int); +void arm1026_dma_unmap_area(const void *, size_t, int); +void arm1026_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm1026_cache_fns __initconst = { + .flush_icache_all = arm1026_flush_icache_all, + .flush_kern_all = arm1026_flush_kern_cache_all, + .flush_kern_louis = arm1026_flush_kern_cache_all, + .flush_user_all = arm1026_flush_user_cache_all, + .flush_user_range = arm1026_flush_user_cache_range, + .coherent_kern_range = arm1026_coherent_kern_range, + .coherent_user_range = arm1026_coherent_user_range, + .flush_kern_dcache_area = arm1026_flush_kern_dcache_area, + .dma_map_area = arm1026_dma_map_area, + .dma_unmap_area = arm1026_dma_unmap_area, + .dma_flush_range = arm1026_dma_flush_range, +}; +#endif + +#if defined(CONFIG_CPU_ARM920T) && !defined(CONFIG_CPU_DCACHE_WRITETHROUGH) +void arm920_flush_icache_all(void); +void arm920_flush_kern_cache_all(void); +void arm920_flush_user_cache_all(void); +void arm920_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm920_coherent_kern_range(unsigned long, unsigned long); +int arm920_coherent_user_range(unsigned long, unsigned long); +void arm920_flush_kern_dcache_area(void *, size_t); +void arm920_dma_map_area(const void *, size_t, int); +void arm920_dma_unmap_area(const void *, size_t, int); +void arm920_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm920_cache_fns __initconst = { + .flush_icache_all = arm920_flush_icache_all, + .flush_kern_all = arm920_flush_kern_cache_all, + .flush_kern_louis = arm920_flush_kern_cache_all, + .flush_user_all = arm920_flush_user_cache_all, + .flush_user_range = arm920_flush_user_cache_range, + .coherent_kern_range = arm920_coherent_kern_range, + .coherent_user_range = arm920_coherent_user_range, + .flush_kern_dcache_area = arm920_flush_kern_dcache_area, + .dma_map_area = arm920_dma_map_area, + .dma_unmap_area = arm920_dma_unmap_area, + .dma_flush_range = arm920_dma_flush_range, +}; +#endif + +#if defined(CONFIG_CPU_ARM922T) && !defined(CONFIG_CPU_DCACHE_WRITETHROUGH) +void arm922_flush_icache_all(void); +void arm922_flush_kern_cache_all(void); +void arm922_flush_user_cache_all(void); +void arm922_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm922_coherent_kern_range(unsigned long, unsigned long); +int arm922_coherent_user_range(unsigned long, unsigned long); +void arm922_flush_kern_dcache_area(void *, size_t); +void arm922_dma_map_area(const void *, size_t, int); +void arm922_dma_unmap_area(const void *, size_t, int); +void arm922_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm922_cache_fns __initconst = { + .flush_icache_all = arm922_flush_icache_all, + .flush_kern_all = arm922_flush_kern_cache_all, + .flush_kern_louis = arm922_flush_kern_cache_all, + .flush_user_all = arm922_flush_user_cache_all, + .flush_user_range = arm922_flush_user_cache_range, + .coherent_kern_range = arm922_coherent_kern_range, + .coherent_user_range = arm922_coherent_user_range, + .flush_kern_dcache_area = arm922_flush_kern_dcache_area, + .dma_map_area = arm922_dma_map_area, + .dma_unmap_area = arm922_dma_unmap_area, + .dma_flush_range = arm922_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_ARM925T +void arm925_flush_icache_all(void); +void arm925_flush_kern_cache_all(void); +void arm925_flush_user_cache_all(void); +void arm925_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm925_coherent_kern_range(unsigned long, unsigned long); +int arm925_coherent_user_range(unsigned long, unsigned long); +void arm925_flush_kern_dcache_area(void *, size_t); +void arm925_dma_map_area(const void *, size_t, int); +void arm925_dma_unmap_area(const void *, size_t, int); +void arm925_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm925_cache_fns __initconst = { + .flush_icache_all = arm925_flush_icache_all, + .flush_kern_all = arm925_flush_kern_cache_all, + .flush_kern_louis = arm925_flush_kern_cache_all, + .flush_user_all = arm925_flush_user_cache_all, + .flush_user_range = arm925_flush_user_cache_range, + .coherent_kern_range = arm925_coherent_kern_range, + .coherent_user_range = arm925_coherent_user_range, + .flush_kern_dcache_area = arm925_flush_kern_dcache_area, + .dma_map_area = arm925_dma_map_area, + .dma_unmap_area = arm925_dma_unmap_area, + .dma_flush_range = arm925_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_ARM926T +void arm926_flush_icache_all(void); +void arm926_flush_kern_cache_all(void); +void arm926_flush_user_cache_all(void); +void arm926_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm926_coherent_kern_range(unsigned long, unsigned long); +int arm926_coherent_user_range(unsigned long, unsigned long); +void arm926_flush_kern_dcache_area(void *, size_t); +void arm926_dma_map_area(const void *, size_t, int); +void arm926_dma_unmap_area(const void *, size_t, int); +void arm926_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm926_cache_fns __initconst = { + .flush_icache_all = arm926_flush_icache_all, + .flush_kern_all = arm926_flush_kern_cache_all, + .flush_kern_louis = arm926_flush_kern_cache_all, + .flush_user_all = arm926_flush_user_cache_all, + .flush_user_range = arm926_flush_user_cache_range, + .coherent_kern_range = arm926_coherent_kern_range, + .coherent_user_range = arm926_coherent_user_range, + .flush_kern_dcache_area = arm926_flush_kern_dcache_area, + .dma_map_area = arm926_dma_map_area, + .dma_unmap_area = arm926_dma_unmap_area, + .dma_flush_range = arm926_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_ARM940T +void arm940_flush_icache_all(void); +void arm940_flush_kern_cache_all(void); +void arm940_flush_user_cache_all(void); +void arm940_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm940_coherent_kern_range(unsigned long, unsigned long); +int arm940_coherent_user_range(unsigned long, unsigned long); +void arm940_flush_kern_dcache_area(void *, size_t); +void arm940_dma_map_area(const void *, size_t, int); +void arm940_dma_unmap_area(const void *, size_t, int); +void arm940_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm940_cache_fns __initconst = { + .flush_icache_all = arm940_flush_icache_all, + .flush_kern_all = arm940_flush_kern_cache_all, + .flush_kern_louis = arm940_flush_kern_cache_all, + .flush_user_all = arm940_flush_user_cache_all, + .flush_user_range = arm940_flush_user_cache_range, + .coherent_kern_range = arm940_coherent_kern_range, + .coherent_user_range = arm940_coherent_user_range, + .flush_kern_dcache_area = arm940_flush_kern_dcache_area, + .dma_map_area = arm940_dma_map_area, + .dma_unmap_area = arm940_dma_unmap_area, + .dma_flush_range = arm940_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_ARM946E +void arm946_flush_icache_all(void); +void arm946_flush_kern_cache_all(void); +void arm946_flush_user_cache_all(void); +void arm946_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void arm946_coherent_kern_range(unsigned long, unsigned long); +int arm946_coherent_user_range(unsigned long, unsigned long); +void arm946_flush_kern_dcache_area(void *, size_t); +void arm946_dma_map_area(const void *, size_t, int); +void arm946_dma_unmap_area(const void *, size_t, int); +void arm946_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns arm946_cache_fns __initconst = { + .flush_icache_all = arm946_flush_icache_all, + .flush_kern_all = arm946_flush_kern_cache_all, + .flush_kern_louis = arm946_flush_kern_cache_all, + .flush_user_all = arm946_flush_user_cache_all, + .flush_user_range = arm946_flush_user_cache_range, + .coherent_kern_range = arm946_coherent_kern_range, + .coherent_user_range = arm946_coherent_user_range, + .flush_kern_dcache_area = arm946_flush_kern_dcache_area, + .dma_map_area = arm946_dma_map_area, + .dma_unmap_area = arm946_dma_unmap_area, + .dma_flush_range = arm946_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_XSCALE +void xscale_flush_icache_all(void); +void xscale_flush_kern_cache_all(void); +void xscale_flush_user_cache_all(void); +void xscale_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void xscale_coherent_kern_range(unsigned long, unsigned long); +int xscale_coherent_user_range(unsigned long, unsigned long); +void xscale_flush_kern_dcache_area(void *, size_t); +void xscale_dma_map_area(const void *, size_t, int); +void xscale_dma_unmap_area(const void *, size_t, int); +void xscale_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns xscale_cache_fns __initconst = { + .flush_icache_all = xscale_flush_icache_all, + .flush_kern_all = xscale_flush_kern_cache_all, + .flush_kern_louis = xscale_flush_kern_cache_all, + .flush_user_all = xscale_flush_user_cache_all, + .flush_user_range = xscale_flush_user_cache_range, + .coherent_kern_range = xscale_coherent_kern_range, + .coherent_user_range = xscale_coherent_user_range, + .flush_kern_dcache_area = xscale_flush_kern_dcache_area, + .dma_map_area = xscale_dma_map_area, + .dma_unmap_area = xscale_dma_unmap_area, + .dma_flush_range = xscale_dma_flush_range, +}; + +/* The 80200 A0 and A1 need a special quirk for dma_map_area() */ +void xscale_80200_A0_A1_dma_map_area(const void *, size_t, int); + +struct cpu_cache_fns xscale_80200_A0_A1_cache_fns __initconst = { + .flush_icache_all = xscale_flush_icache_all, + .flush_kern_all = xscale_flush_kern_cache_all, + .flush_kern_louis = xscale_flush_kern_cache_all, + .flush_user_all = xscale_flush_user_cache_all, + .flush_user_range = xscale_flush_user_cache_range, + .coherent_kern_range = xscale_coherent_kern_range, + .coherent_user_range = xscale_coherent_user_range, + .flush_kern_dcache_area = xscale_flush_kern_dcache_area, + .dma_map_area = xscale_80200_A0_A1_dma_map_area, + .dma_unmap_area = xscale_dma_unmap_area, + .dma_flush_range = xscale_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_XSC3 +void xsc3_flush_icache_all(void); +void xsc3_flush_kern_cache_all(void); +void xsc3_flush_user_cache_all(void); +void xsc3_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void xsc3_coherent_kern_range(unsigned long, unsigned long); +int xsc3_coherent_user_range(unsigned long, unsigned long); +void xsc3_flush_kern_dcache_area(void *, size_t); +void xsc3_dma_map_area(const void *, size_t, int); +void xsc3_dma_unmap_area(const void *, size_t, int); +void xsc3_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns xsc3_cache_fns __initconst = { + .flush_icache_all = xsc3_flush_icache_all, + .flush_kern_all = xsc3_flush_kern_cache_all, + .flush_kern_louis = xsc3_flush_kern_cache_all, + .flush_user_all = xsc3_flush_user_cache_all, + .flush_user_range = xsc3_flush_user_cache_range, + .coherent_kern_range = xsc3_coherent_kern_range, + .coherent_user_range = xsc3_coherent_user_range, + .flush_kern_dcache_area = xsc3_flush_kern_dcache_area, + .dma_map_area = xsc3_dma_map_area, + .dma_unmap_area = xsc3_dma_unmap_area, + .dma_flush_range = xsc3_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_MOHAWK +void mohawk_flush_icache_all(void); +void mohawk_flush_kern_cache_all(void); +void mohawk_flush_user_cache_all(void); +void mohawk_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void mohawk_coherent_kern_range(unsigned long, unsigned long); +int mohawk_coherent_user_range(unsigned long, unsigned long); +void mohawk_flush_kern_dcache_area(void *, size_t); +void mohawk_dma_map_area(const void *, size_t, int); +void mohawk_dma_unmap_area(const void *, size_t, int); +void mohawk_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns mohawk_cache_fns __initconst = { + .flush_icache_all = mohawk_flush_icache_all, + .flush_kern_all = mohawk_flush_kern_cache_all, + .flush_kern_louis = mohawk_flush_kern_cache_all, + .flush_user_all = mohawk_flush_user_cache_all, + .flush_user_range = mohawk_flush_user_cache_range, + .coherent_kern_range = mohawk_coherent_kern_range, + .coherent_user_range = mohawk_coherent_user_range, + .flush_kern_dcache_area = mohawk_flush_kern_dcache_area, + .dma_map_area = mohawk_dma_map_area, + .dma_unmap_area = mohawk_dma_unmap_area, + .dma_flush_range = mohawk_dma_flush_range, +}; +#endif + +#ifdef CONFIG_CPU_FEROCEON +void feroceon_flush_icache_all(void); +void feroceon_flush_kern_cache_all(void); +void feroceon_flush_user_cache_all(void); +void feroceon_flush_user_cache_range(unsigned long, unsigned long, unsigned int); +void feroceon_coherent_kern_range(unsigned long, unsigned long); +int feroceon_coherent_user_range(unsigned long, unsigned long); +void feroceon_flush_kern_dcache_area(void *, size_t); +void feroceon_dma_map_area(const void *, size_t, int); +void feroceon_dma_unmap_area(const void *, size_t, int); +void feroceon_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns feroceon_cache_fns __initconst = { + .flush_icache_all = feroceon_flush_icache_all, + .flush_kern_all = feroceon_flush_kern_cache_all, + .flush_kern_louis = feroceon_flush_kern_cache_all, + .flush_user_all = feroceon_flush_user_cache_all, + .flush_user_range = feroceon_flush_user_cache_range, + .coherent_kern_range = feroceon_coherent_kern_range, + .coherent_user_range = feroceon_coherent_user_range, + .flush_kern_dcache_area = feroceon_flush_kern_dcache_area, + .dma_map_area = feroceon_dma_map_area, + .dma_unmap_area = feroceon_dma_unmap_area, + .dma_flush_range = feroceon_dma_flush_range, +}; + +void feroceon_range_flush_kern_dcache_area(void *, size_t); +void feroceon_range_dma_map_area(const void *, size_t, int); +void feroceon_range_dma_flush_range(const void *, const void *); + +struct cpu_cache_fns feroceon_range_cache_fns __initconst = { + .flush_icache_all = feroceon_flush_icache_all, + .flush_kern_all = feroceon_flush_kern_cache_all, + .flush_kern_louis = feroceon_flush_kern_cache_all, + .flush_user_all = feroceon_flush_user_cache_all, + .flush_user_range = feroceon_flush_user_cache_range, + .coherent_kern_range = feroceon_coherent_kern_range, + .coherent_user_range = feroceon_coherent_user_range, + .flush_kern_dcache_area = feroceon_range_flush_kern_dcache_area, + .dma_map_area = feroceon_range_dma_map_area, + .dma_unmap_area = feroceon_dma_unmap_area, + .dma_flush_range = feroceon_range_dma_flush_range, +}; +#endif diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c index 439dc6a26bb9..dfa9554ef331 100644 --- a/arch/arm/mm/fault.c +++ b/arch/arm/mm/fault.c @@ -242,6 +242,27 @@ static inline bool is_permission_fault(unsigned int fsr) return false; } +#ifdef CONFIG_CPU_TTBR0_PAN +static inline bool ttbr0_usermode_access_allowed(struct pt_regs *regs) +{ + struct svc_pt_regs *svcregs; + + /* If we are in user mode: permission granted */ + if (user_mode(regs)) + return true; + + /* uaccess state saved above pt_regs on SVC exception entry */ + svcregs = to_svc_pt_regs(regs); + + return !(svcregs->ttbcr & TTBCR_EPD0); +} +#else +static inline bool ttbr0_usermode_access_allowed(struct pt_regs *regs) +{ + return true; +} +#endif + static int __kprobes do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) { @@ -285,6 +306,14 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr); + /* + * Privileged access aborts with CONFIG_CPU_TTBR0_PAN enabled are + * routed via the translation fault mechanism. Check whether uaccess + * is disabled while in kernel mode. + */ + if (!ttbr0_usermode_access_allowed(regs)) + goto no_context; + if (!(flags & FAULT_FLAG_USER)) goto lock_mmap; diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index c24e29c0b9a4..3f774856ca67 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -1687,9 +1687,8 @@ static void __init early_paging_init(const struct machine_desc *mdesc) */ cr = get_cr(); set_cr(cr & ~(CR_I | CR_C)); - asm("mrc p15, 0, %0, c2, c0, 2" : "=r" (ttbcr)); - asm volatile("mcr p15, 0, %0, c2, c0, 2" - : : "r" (ttbcr & ~(3 << 8 | 3 << 10))); + ttbcr = cpu_get_ttbcr(); + cpu_set_ttbcr(ttbcr & ~(3 << 8 | 3 << 10)); flush_cache_all(); /* @@ -1701,7 +1700,7 @@ static void __init early_paging_init(const struct machine_desc *mdesc) lpae_pgtables_remap(offset, pa_pgd); /* Re-enable the caches and cacheable TLB walks */ - asm volatile("mcr p15, 0, %0, c2, c0, 2" : : "r" (ttbcr)); + cpu_set_ttbcr(ttbcr); set_cr(cr); } diff --git a/arch/arm/mm/proc-arm1020.S b/arch/arm/mm/proc-arm1020.S index 6837cf7a4812..d0ce3414a13e 100644 --- a/arch/arm/mm/proc-arm1020.S +++ b/arch/arm/mm/proc-arm1020.S @@ -11,6 +11,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -56,18 +57,20 @@ /* * cpu_arm1020_proc_init() */ -ENTRY(cpu_arm1020_proc_init) +SYM_TYPED_FUNC_START(cpu_arm1020_proc_init) ret lr +SYM_FUNC_END(cpu_arm1020_proc_init) /* * cpu_arm1020_proc_fin() */ -ENTRY(cpu_arm1020_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm1020_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm1020_proc_fin) /* * cpu_arm1020_reset(loc) @@ -80,7 +83,7 @@ ENTRY(cpu_arm1020_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_arm1020_reset) +SYM_TYPED_FUNC_START(cpu_arm1020_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -92,16 +95,17 @@ ENTRY(cpu_arm1020_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm1020_reset) +SYM_FUNC_END(cpu_arm1020_reset) .popsection /* * cpu_arm1020_do_idle() */ .align 5 -ENTRY(cpu_arm1020_do_idle) +SYM_TYPED_FUNC_START(cpu_arm1020_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt ret lr +SYM_FUNC_END(cpu_arm1020_do_idle) /* ================================= CACHE ================================ */ @@ -112,13 +116,13 @@ ENTRY(cpu_arm1020_do_idle) * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm1020_flush_icache_all) +SYM_TYPED_FUNC_START(arm1020_flush_icache_all) #ifndef CONFIG_CPU_ICACHE_DISABLE mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache #endif ret lr -ENDPROC(arm1020_flush_icache_all) +SYM_FUNC_END(arm1020_flush_icache_all) /* * flush_user_cache_all() @@ -126,14 +130,14 @@ ENDPROC(arm1020_flush_icache_all) * Invalidate all cache entries in a particular address * space. */ -ENTRY(arm1020_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm1020_flush_user_cache_all, arm1020_flush_kern_cache_all) + /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm1020_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm1020_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -154,6 +158,7 @@ __flush_whole_cache: #endif mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1020_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -165,7 +170,7 @@ __flush_whole_cache: * - end - end address (exclusive) * - flags - vm_flags for this space */ -ENTRY(arm1020_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm1020_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -185,6 +190,7 @@ ENTRY(arm1020_flush_user_cache_range) #endif mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1020_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -196,8 +202,11 @@ ENTRY(arm1020_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1020_coherent_kern_range) - /* FALLTRHOUGH */ +SYM_TYPED_FUNC_START(arm1020_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm1020_coherent_user_range +#endif +SYM_FUNC_END(arm1020_coherent_kern_range) /* * coherent_user_range(start, end) @@ -209,7 +218,7 @@ ENTRY(arm1020_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1020_coherent_user_range) +SYM_TYPED_FUNC_START(arm1020_coherent_user_range) mov ip, #0 bic r0, r0, #CACHE_DLINESIZE - 1 mcr p15, 0, ip, c7, c10, 4 @@ -227,6 +236,7 @@ ENTRY(arm1020_coherent_user_range) mcr p15, 0, ip, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm1020_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -237,7 +247,7 @@ ENTRY(arm1020_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm1020_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm1020_flush_kern_dcache_area) mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE add r1, r0, r1 @@ -249,6 +259,7 @@ ENTRY(arm1020_flush_kern_dcache_area) #endif mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1020_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -314,7 +325,7 @@ arm1020_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1020_dma_flush_range) +SYM_TYPED_FUNC_START(arm1020_dma_flush_range) mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE bic r0, r0, #CACHE_DLINESIZE - 1 @@ -327,6 +338,7 @@ ENTRY(arm1020_dma_flush_range) #endif mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1020_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -334,13 +346,13 @@ ENTRY(arm1020_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm1020_dma_map_area) +SYM_TYPED_FUNC_START(arm1020_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm1020_dma_clean_range bcs arm1020_dma_inv_range b arm1020_dma_flush_range -ENDPROC(arm1020_dma_map_area) +SYM_FUNC_END(arm1020_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -348,18 +360,12 @@ ENDPROC(arm1020_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm1020_dma_unmap_area) +SYM_TYPED_FUNC_START(arm1020_dma_unmap_area) ret lr -ENDPROC(arm1020_dma_unmap_area) - - .globl arm1020_flush_kern_cache_louis - .equ arm1020_flush_kern_cache_louis, arm1020_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm1020 +SYM_FUNC_END(arm1020_dma_unmap_area) .align 5 -ENTRY(cpu_arm1020_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm1020_dcache_clean_area) #ifndef CONFIG_CPU_DCACHE_DISABLE mov ip, #0 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry @@ -369,6 +375,7 @@ ENTRY(cpu_arm1020_dcache_clean_area) bhi 1b #endif ret lr +SYM_FUNC_END(cpu_arm1020_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -380,7 +387,7 @@ ENTRY(cpu_arm1020_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_arm1020_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm1020_switch_mm) #ifdef CONFIG_MMU #ifndef CONFIG_CPU_DCACHE_DISABLE mcr p15, 0, r3, c7, c10, 4 @@ -408,14 +415,15 @@ ENTRY(cpu_arm1020_switch_mm) mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs #endif /* CONFIG_MMU */ ret lr - +SYM_FUNC_END(cpu_arm1020_switch_mm) + /* * cpu_arm1020_set_pte(ptep, pte) * * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_arm1020_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm1020_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -426,6 +434,7 @@ ENTRY(cpu_arm1020_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif /* CONFIG_MMU */ ret lr +SYM_FUNC_END(cpu_arm1020_set_pte_ext) .type __arm1020_setup, #function __arm1020_setup: diff --git a/arch/arm/mm/proc-arm1020e.S b/arch/arm/mm/proc-arm1020e.S index df49b10250b8..64f031bf6eff 100644 --- a/arch/arm/mm/proc-arm1020e.S +++ b/arch/arm/mm/proc-arm1020e.S @@ -11,6 +11,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -56,18 +57,20 @@ /* * cpu_arm1020e_proc_init() */ -ENTRY(cpu_arm1020e_proc_init) +SYM_TYPED_FUNC_START(cpu_arm1020e_proc_init) ret lr +SYM_FUNC_END(cpu_arm1020e_proc_init) /* * cpu_arm1020e_proc_fin() */ -ENTRY(cpu_arm1020e_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm1020e_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm1020e_proc_fin) /* * cpu_arm1020e_reset(loc) @@ -80,7 +83,7 @@ ENTRY(cpu_arm1020e_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_arm1020e_reset) +SYM_TYPED_FUNC_START(cpu_arm1020e_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -92,16 +95,17 @@ ENTRY(cpu_arm1020e_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm1020e_reset) +SYM_FUNC_END(cpu_arm1020e_reset) .popsection /* * cpu_arm1020e_do_idle() */ .align 5 -ENTRY(cpu_arm1020e_do_idle) +SYM_TYPED_FUNC_START(cpu_arm1020e_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt ret lr +SYM_FUNC_END(cpu_arm1020e_do_idle) /* ================================= CACHE ================================ */ @@ -112,13 +116,13 @@ ENTRY(cpu_arm1020e_do_idle) * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm1020e_flush_icache_all) +SYM_TYPED_FUNC_START(arm1020e_flush_icache_all) #ifndef CONFIG_CPU_ICACHE_DISABLE mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache #endif ret lr -ENDPROC(arm1020e_flush_icache_all) +SYM_FUNC_END(arm1020e_flush_icache_all) /* * flush_user_cache_all() @@ -126,14 +130,14 @@ ENDPROC(arm1020e_flush_icache_all) * Invalidate all cache entries in a particular address * space. */ -ENTRY(arm1020e_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm1020e_flush_user_cache_all, arm1020e_flush_kern_cache_all) + /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm1020e_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm1020e_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -153,6 +157,7 @@ __flush_whole_cache: #endif mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1020e_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -164,7 +169,7 @@ __flush_whole_cache: * - end - end address (exclusive) * - flags - vm_flags for this space */ -ENTRY(arm1020e_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm1020e_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -182,6 +187,7 @@ ENTRY(arm1020e_flush_user_cache_range) #endif mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1020e_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -193,8 +199,12 @@ ENTRY(arm1020e_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1020e_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm1020e_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm1020e_coherent_user_range +#endif +SYM_FUNC_END(arm1020e_coherent_kern_range) + /* * coherent_user_range(start, end) * @@ -205,7 +215,7 @@ ENTRY(arm1020e_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1020e_coherent_user_range) +SYM_TYPED_FUNC_START(arm1020e_coherent_user_range) mov ip, #0 bic r0, r0, #CACHE_DLINESIZE - 1 1: @@ -221,6 +231,7 @@ ENTRY(arm1020e_coherent_user_range) mcr p15, 0, ip, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm1020e_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -231,7 +242,7 @@ ENTRY(arm1020e_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm1020e_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm1020e_flush_kern_dcache_area) mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE add r1, r0, r1 @@ -242,6 +253,7 @@ ENTRY(arm1020e_flush_kern_dcache_area) #endif mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1020e_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -302,7 +314,7 @@ arm1020e_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1020e_dma_flush_range) +SYM_TYPED_FUNC_START(arm1020e_dma_flush_range) mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE bic r0, r0, #CACHE_DLINESIZE - 1 @@ -313,6 +325,7 @@ ENTRY(arm1020e_dma_flush_range) #endif mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1020e_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -320,13 +333,13 @@ ENTRY(arm1020e_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm1020e_dma_map_area) +SYM_TYPED_FUNC_START(arm1020e_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm1020e_dma_clean_range bcs arm1020e_dma_inv_range b arm1020e_dma_flush_range -ENDPROC(arm1020e_dma_map_area) +SYM_FUNC_END(arm1020e_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -334,18 +347,12 @@ ENDPROC(arm1020e_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm1020e_dma_unmap_area) +SYM_TYPED_FUNC_START(arm1020e_dma_unmap_area) ret lr -ENDPROC(arm1020e_dma_unmap_area) - - .globl arm1020e_flush_kern_cache_louis - .equ arm1020e_flush_kern_cache_louis, arm1020e_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm1020e +SYM_FUNC_END(arm1020e_dma_unmap_area) .align 5 -ENTRY(cpu_arm1020e_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm1020e_dcache_clean_area) #ifndef CONFIG_CPU_DCACHE_DISABLE mov ip, #0 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry @@ -354,6 +361,7 @@ ENTRY(cpu_arm1020e_dcache_clean_area) bhi 1b #endif ret lr +SYM_FUNC_END(cpu_arm1020e_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -365,7 +373,7 @@ ENTRY(cpu_arm1020e_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_arm1020e_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm1020e_switch_mm) #ifdef CONFIG_MMU #ifndef CONFIG_CPU_DCACHE_DISABLE mcr p15, 0, r3, c7, c10, 4 @@ -392,14 +400,15 @@ ENTRY(cpu_arm1020e_switch_mm) mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs #endif ret lr - +SYM_FUNC_END(cpu_arm1020e_switch_mm) + /* * cpu_arm1020e_set_pte(ptep, pte) * * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_arm1020e_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm1020e_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -408,6 +417,7 @@ ENTRY(cpu_arm1020e_set_pte_ext) #endif #endif /* CONFIG_MMU */ ret lr +SYM_FUNC_END(cpu_arm1020e_set_pte_ext) .type __arm1020e_setup, #function __arm1020e_setup: diff --git a/arch/arm/mm/proc-arm1022.S b/arch/arm/mm/proc-arm1022.S index e89ce467f672..42ed5ed07252 100644 --- a/arch/arm/mm/proc-arm1022.S +++ b/arch/arm/mm/proc-arm1022.S @@ -11,6 +11,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -56,18 +57,20 @@ /* * cpu_arm1022_proc_init() */ -ENTRY(cpu_arm1022_proc_init) +SYM_TYPED_FUNC_START(cpu_arm1022_proc_init) ret lr +SYM_FUNC_END(cpu_arm1022_proc_init) /* * cpu_arm1022_proc_fin() */ -ENTRY(cpu_arm1022_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm1022_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm1022_proc_fin) /* * cpu_arm1022_reset(loc) @@ -80,7 +83,7 @@ ENTRY(cpu_arm1022_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_arm1022_reset) +SYM_TYPED_FUNC_START(cpu_arm1022_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -92,16 +95,17 @@ ENTRY(cpu_arm1022_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm1022_reset) +SYM_FUNC_END(cpu_arm1022_reset) .popsection /* * cpu_arm1022_do_idle() */ .align 5 -ENTRY(cpu_arm1022_do_idle) +SYM_TYPED_FUNC_START(cpu_arm1022_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt ret lr +SYM_FUNC_END(cpu_arm1022_do_idle) /* ================================= CACHE ================================ */ @@ -112,13 +116,13 @@ ENTRY(cpu_arm1022_do_idle) * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm1022_flush_icache_all) +SYM_TYPED_FUNC_START(arm1022_flush_icache_all) #ifndef CONFIG_CPU_ICACHE_DISABLE mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache #endif ret lr -ENDPROC(arm1022_flush_icache_all) +SYM_FUNC_END(arm1022_flush_icache_all) /* * flush_user_cache_all() @@ -126,14 +130,14 @@ ENDPROC(arm1022_flush_icache_all) * Invalidate all cache entries in a particular address * space. */ -ENTRY(arm1022_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm1022_flush_user_cache_all, arm1022_flush_kern_cache_all) + /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm1022_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm1022_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -152,6 +156,7 @@ __flush_whole_cache: #endif mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1022_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -163,7 +168,7 @@ __flush_whole_cache: * - end - end address (exclusive) * - flags - vm_flags for this space */ -ENTRY(arm1022_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm1022_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -181,6 +186,7 @@ ENTRY(arm1022_flush_user_cache_range) #endif mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1022_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -192,8 +198,11 @@ ENTRY(arm1022_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1022_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm1022_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm1022_coherent_user_range +#endif +SYM_FUNC_END(arm1022_coherent_kern_range) /* * coherent_user_range(start, end) @@ -205,7 +214,7 @@ ENTRY(arm1022_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1022_coherent_user_range) +SYM_TYPED_FUNC_START(arm1022_coherent_user_range) mov ip, #0 bic r0, r0, #CACHE_DLINESIZE - 1 1: @@ -221,6 +230,7 @@ ENTRY(arm1022_coherent_user_range) mcr p15, 0, ip, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm1022_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -231,7 +241,7 @@ ENTRY(arm1022_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm1022_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm1022_flush_kern_dcache_area) mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE add r1, r0, r1 @@ -242,6 +252,7 @@ ENTRY(arm1022_flush_kern_dcache_area) #endif mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1022_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -302,7 +313,7 @@ arm1022_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1022_dma_flush_range) +SYM_TYPED_FUNC_START(arm1022_dma_flush_range) mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE bic r0, r0, #CACHE_DLINESIZE - 1 @@ -313,6 +324,7 @@ ENTRY(arm1022_dma_flush_range) #endif mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1022_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -320,13 +332,13 @@ ENTRY(arm1022_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm1022_dma_map_area) +SYM_TYPED_FUNC_START(arm1022_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm1022_dma_clean_range bcs arm1022_dma_inv_range b arm1022_dma_flush_range -ENDPROC(arm1022_dma_map_area) +SYM_FUNC_END(arm1022_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -334,18 +346,12 @@ ENDPROC(arm1022_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm1022_dma_unmap_area) +SYM_TYPED_FUNC_START(arm1022_dma_unmap_area) ret lr -ENDPROC(arm1022_dma_unmap_area) - - .globl arm1022_flush_kern_cache_louis - .equ arm1022_flush_kern_cache_louis, arm1022_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm1022 +SYM_FUNC_END(arm1022_dma_unmap_area) .align 5 -ENTRY(cpu_arm1022_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm1022_dcache_clean_area) #ifndef CONFIG_CPU_DCACHE_DISABLE mov ip, #0 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry @@ -354,6 +360,7 @@ ENTRY(cpu_arm1022_dcache_clean_area) bhi 1b #endif ret lr +SYM_FUNC_END(cpu_arm1022_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -365,7 +372,7 @@ ENTRY(cpu_arm1022_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_arm1022_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm1022_switch_mm) #ifdef CONFIG_MMU #ifndef CONFIG_CPU_DCACHE_DISABLE mov r1, #(CACHE_DSEGMENTS - 1) << 5 @ 16 segments @@ -385,14 +392,15 @@ ENTRY(cpu_arm1022_switch_mm) mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs #endif ret lr - +SYM_FUNC_END(cpu_arm1022_switch_mm) + /* * cpu_arm1022_set_pte_ext(ptep, pte, ext) * * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_arm1022_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm1022_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -401,6 +409,7 @@ ENTRY(cpu_arm1022_set_pte_ext) #endif #endif /* CONFIG_MMU */ ret lr +SYM_FUNC_END(cpu_arm1022_set_pte_ext) .type __arm1022_setup, #function __arm1022_setup: diff --git a/arch/arm/mm/proc-arm1026.S b/arch/arm/mm/proc-arm1026.S index 7fdd1a205e8e..b3ae62cd553a 100644 --- a/arch/arm/mm/proc-arm1026.S +++ b/arch/arm/mm/proc-arm1026.S @@ -11,6 +11,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -56,18 +57,20 @@ /* * cpu_arm1026_proc_init() */ -ENTRY(cpu_arm1026_proc_init) +SYM_TYPED_FUNC_START(cpu_arm1026_proc_init) ret lr +SYM_FUNC_END(cpu_arm1026_proc_init) /* * cpu_arm1026_proc_fin() */ -ENTRY(cpu_arm1026_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm1026_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm1026_proc_fin) /* * cpu_arm1026_reset(loc) @@ -80,7 +83,7 @@ ENTRY(cpu_arm1026_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_arm1026_reset) +SYM_TYPED_FUNC_START(cpu_arm1026_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -92,16 +95,17 @@ ENTRY(cpu_arm1026_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm1026_reset) +SYM_FUNC_END(cpu_arm1026_reset) .popsection /* * cpu_arm1026_do_idle() */ .align 5 -ENTRY(cpu_arm1026_do_idle) +SYM_TYPED_FUNC_START(cpu_arm1026_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt ret lr +SYM_FUNC_END(cpu_arm1026_do_idle) /* ================================= CACHE ================================ */ @@ -112,13 +116,13 @@ ENTRY(cpu_arm1026_do_idle) * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm1026_flush_icache_all) +SYM_TYPED_FUNC_START(arm1026_flush_icache_all) #ifndef CONFIG_CPU_ICACHE_DISABLE mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache #endif ret lr -ENDPROC(arm1026_flush_icache_all) +SYM_FUNC_END(arm1026_flush_icache_all) /* * flush_user_cache_all() @@ -126,14 +130,14 @@ ENDPROC(arm1026_flush_icache_all) * Invalidate all cache entries in a particular address * space. */ -ENTRY(arm1026_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm1026_flush_user_cache_all, arm1026_flush_kern_cache_all) + /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm1026_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm1026_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -147,6 +151,7 @@ __flush_whole_cache: #endif mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1026_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -158,7 +163,7 @@ __flush_whole_cache: * - end - end address (exclusive) * - flags - vm_flags for this space */ -ENTRY(arm1026_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm1026_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -176,6 +181,7 @@ ENTRY(arm1026_flush_user_cache_range) #endif mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1026_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -187,8 +193,12 @@ ENTRY(arm1026_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1026_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm1026_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm1026_coherent_user_range +#endif +SYM_FUNC_END(arm1026_coherent_kern_range) + /* * coherent_user_range(start, end) * @@ -199,7 +209,7 @@ ENTRY(arm1026_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1026_coherent_user_range) +SYM_TYPED_FUNC_START(arm1026_coherent_user_range) mov ip, #0 bic r0, r0, #CACHE_DLINESIZE - 1 1: @@ -215,6 +225,7 @@ ENTRY(arm1026_coherent_user_range) mcr p15, 0, ip, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm1026_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -225,7 +236,7 @@ ENTRY(arm1026_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm1026_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm1026_flush_kern_dcache_area) mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE add r1, r0, r1 @@ -236,6 +247,7 @@ ENTRY(arm1026_flush_kern_dcache_area) #endif mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1026_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -296,7 +308,7 @@ arm1026_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(arm1026_dma_flush_range) +SYM_TYPED_FUNC_START(arm1026_dma_flush_range) mov ip, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE bic r0, r0, #CACHE_DLINESIZE - 1 @@ -307,6 +319,7 @@ ENTRY(arm1026_dma_flush_range) #endif mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm1026_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -314,13 +327,13 @@ ENTRY(arm1026_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm1026_dma_map_area) +SYM_TYPED_FUNC_START(arm1026_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm1026_dma_clean_range bcs arm1026_dma_inv_range b arm1026_dma_flush_range -ENDPROC(arm1026_dma_map_area) +SYM_FUNC_END(arm1026_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -328,18 +341,12 @@ ENDPROC(arm1026_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm1026_dma_unmap_area) +SYM_TYPED_FUNC_START(arm1026_dma_unmap_area) ret lr -ENDPROC(arm1026_dma_unmap_area) - - .globl arm1026_flush_kern_cache_louis - .equ arm1026_flush_kern_cache_louis, arm1026_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm1026 +SYM_FUNC_END(arm1026_dma_unmap_area) .align 5 -ENTRY(cpu_arm1026_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm1026_dcache_clean_area) #ifndef CONFIG_CPU_DCACHE_DISABLE mov ip, #0 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry @@ -348,6 +355,7 @@ ENTRY(cpu_arm1026_dcache_clean_area) bhi 1b #endif ret lr +SYM_FUNC_END(cpu_arm1026_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -359,7 +367,7 @@ ENTRY(cpu_arm1026_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_arm1026_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm1026_switch_mm) #ifdef CONFIG_MMU mov r1, #0 #ifndef CONFIG_CPU_DCACHE_DISABLE @@ -374,14 +382,15 @@ ENTRY(cpu_arm1026_switch_mm) mcr p15, 0, r1, c8, c7, 0 @ invalidate I & D TLBs #endif ret lr - +SYM_FUNC_END(cpu_arm1026_switch_mm) + /* * cpu_arm1026_set_pte_ext(ptep, pte, ext) * * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_arm1026_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm1026_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -390,6 +399,7 @@ ENTRY(cpu_arm1026_set_pte_ext) #endif #endif /* CONFIG_MMU */ ret lr +SYM_FUNC_END(cpu_arm1026_set_pte_ext) .type __arm1026_setup, #function __arm1026_setup: diff --git a/arch/arm/mm/proc-arm720.S b/arch/arm/mm/proc-arm720.S index 3b687e6dd9fd..59732c334e1d 100644 --- a/arch/arm/mm/proc-arm720.S +++ b/arch/arm/mm/proc-arm720.S @@ -20,6 +20,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -35,24 +36,30 @@ * * Notes : This processor does not require these */ -ENTRY(cpu_arm720_dcache_clean_area) -ENTRY(cpu_arm720_proc_init) +SYM_TYPED_FUNC_START(cpu_arm720_dcache_clean_area) ret lr +SYM_FUNC_END(cpu_arm720_dcache_clean_area) -ENTRY(cpu_arm720_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm720_proc_init) + ret lr +SYM_FUNC_END(cpu_arm720_proc_init) + +SYM_TYPED_FUNC_START(cpu_arm720_proc_fin) mrc p15, 0, r0, c1, c0, 0 bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm720_proc_fin) /* * Function: arm720_proc_do_idle(void) * Params : r0 = unused * Purpose : put the processor in proper idle mode */ -ENTRY(cpu_arm720_do_idle) +SYM_TYPED_FUNC_START(cpu_arm720_do_idle) ret lr +SYM_FUNC_END(cpu_arm720_do_idle) /* * Function: arm720_switch_mm(unsigned long pgd_phys) @@ -60,7 +67,7 @@ ENTRY(cpu_arm720_do_idle) * Purpose : Perform a task switch, saving the old process' state and restoring * the new. */ -ENTRY(cpu_arm720_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm720_switch_mm) #ifdef CONFIG_MMU mov r1, #0 mcr p15, 0, r1, c7, c7, 0 @ invalidate cache @@ -68,6 +75,7 @@ ENTRY(cpu_arm720_switch_mm) mcr p15, 0, r1, c8, c7, 0 @ flush TLB (v4) #endif ret lr +SYM_FUNC_END(cpu_arm720_switch_mm) /* * Function: arm720_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext) @@ -76,11 +84,12 @@ ENTRY(cpu_arm720_switch_mm) * Purpose : Set a PTE and flush it out of any WB cache */ .align 5 -ENTRY(cpu_arm720_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm720_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext wc_disable=0 #endif ret lr +SYM_FUNC_END(cpu_arm720_set_pte_ext) /* * Function: arm720_reset @@ -88,7 +97,7 @@ ENTRY(cpu_arm720_set_pte_ext) * Notes : This sets up everything for a reset */ .pushsection .idmap.text, "ax" -ENTRY(cpu_arm720_reset) +SYM_TYPED_FUNC_START(cpu_arm720_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate cache #ifdef CONFIG_MMU @@ -99,7 +108,7 @@ ENTRY(cpu_arm720_reset) bic ip, ip, #0x2100 @ ..v....s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm720_reset) +SYM_FUNC_END(cpu_arm720_reset) .popsection .type __arm710_setup, #function diff --git a/arch/arm/mm/proc-arm740.S b/arch/arm/mm/proc-arm740.S index f2ec3bc60874..78854df63964 100644 --- a/arch/arm/mm/proc-arm740.S +++ b/arch/arm/mm/proc-arm740.S @@ -6,6 +6,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -24,21 +25,32 @@ * * These are not required. */ -ENTRY(cpu_arm740_proc_init) -ENTRY(cpu_arm740_do_idle) -ENTRY(cpu_arm740_dcache_clean_area) -ENTRY(cpu_arm740_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm740_proc_init) ret lr +SYM_FUNC_END(cpu_arm740_proc_init) + +SYM_TYPED_FUNC_START(cpu_arm740_do_idle) + ret lr +SYM_FUNC_END(cpu_arm740_do_idle) + +SYM_TYPED_FUNC_START(cpu_arm740_dcache_clean_area) + ret lr +SYM_FUNC_END(cpu_arm740_dcache_clean_area) + +SYM_TYPED_FUNC_START(cpu_arm740_switch_mm) + ret lr +SYM_FUNC_END(cpu_arm740_switch_mm) /* * cpu_arm740_proc_fin() */ -ENTRY(cpu_arm740_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm740_proc_fin) mrc p15, 0, r0, c1, c0, 0 bic r0, r0, #0x3f000000 @ bank/f/lock/s bic r0, r0, #0x0000000c @ w-buffer/cache mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm740_proc_fin) /* * cpu_arm740_reset(loc) @@ -46,14 +58,14 @@ ENTRY(cpu_arm740_proc_fin) * Notes : This sets up everything for a reset */ .pushsection .idmap.text, "ax" -ENTRY(cpu_arm740_reset) +SYM_TYPED_FUNC_START(cpu_arm740_reset) mov ip, #0 mcr p15, 0, ip, c7, c0, 0 @ invalidate cache mrc p15, 0, ip, c1, c0, 0 @ get ctrl register bic ip, ip, #0x0000000c @ ............wc.. mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm740_reset) +SYM_FUNC_END(cpu_arm740_reset) .popsection .type __arm740_setup, #function diff --git a/arch/arm/mm/proc-arm7tdmi.S b/arch/arm/mm/proc-arm7tdmi.S index 01bbe7576c1c..baa3d4472147 100644 --- a/arch/arm/mm/proc-arm7tdmi.S +++ b/arch/arm/mm/proc-arm7tdmi.S @@ -6,6 +6,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -23,18 +24,29 @@ * cpu_arm7tdmi_switch_mm() * * These are not required. - */ -ENTRY(cpu_arm7tdmi_proc_init) -ENTRY(cpu_arm7tdmi_do_idle) -ENTRY(cpu_arm7tdmi_dcache_clean_area) -ENTRY(cpu_arm7tdmi_switch_mm) - ret lr +*/ +SYM_TYPED_FUNC_START(cpu_arm7tdmi_proc_init) + ret lr +SYM_FUNC_END(cpu_arm7tdmi_proc_init) + +SYM_TYPED_FUNC_START(cpu_arm7tdmi_do_idle) + ret lr +SYM_FUNC_END(cpu_arm7tdmi_do_idle) + +SYM_TYPED_FUNC_START(cpu_arm7tdmi_dcache_clean_area) + ret lr +SYM_FUNC_END(cpu_arm7tdmi_dcache_clean_area) + +SYM_TYPED_FUNC_START(cpu_arm7tdmi_switch_mm) + ret lr +SYM_FUNC_END(cpu_arm7tdmi_switch_mm) /* * cpu_arm7tdmi_proc_fin() - */ -ENTRY(cpu_arm7tdmi_proc_fin) - ret lr +*/ +SYM_TYPED_FUNC_START(cpu_arm7tdmi_proc_fin) + ret lr +SYM_FUNC_END(cpu_arm7tdmi_proc_fin) /* * Function: cpu_arm7tdmi_reset(loc) @@ -42,9 +54,9 @@ ENTRY(cpu_arm7tdmi_proc_fin) * Purpose : Sets up everything for a reset and jump to the location for soft reset. */ .pushsection .idmap.text, "ax" -ENTRY(cpu_arm7tdmi_reset) +SYM_TYPED_FUNC_START(cpu_arm7tdmi_reset) ret r0 -ENDPROC(cpu_arm7tdmi_reset) +SYM_FUNC_END(cpu_arm7tdmi_reset) .popsection .type __arm7tdmi_setup, #function diff --git a/arch/arm/mm/proc-arm920.S b/arch/arm/mm/proc-arm920.S index a234cd8ba5e6..a30df54ad5fa 100644 --- a/arch/arm/mm/proc-arm920.S +++ b/arch/arm/mm/proc-arm920.S @@ -13,6 +13,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -48,18 +49,20 @@ /* * cpu_arm920_proc_init() */ -ENTRY(cpu_arm920_proc_init) +SYM_TYPED_FUNC_START(cpu_arm920_proc_init) ret lr +SYM_FUNC_END(cpu_arm920_proc_init) /* * cpu_arm920_proc_fin() */ -ENTRY(cpu_arm920_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm920_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm920_proc_fin) /* * cpu_arm920_reset(loc) @@ -72,7 +75,7 @@ ENTRY(cpu_arm920_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_arm920_reset) +SYM_TYPED_FUNC_START(cpu_arm920_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -84,17 +87,17 @@ ENTRY(cpu_arm920_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm920_reset) +SYM_FUNC_END(cpu_arm920_reset) .popsection /* * cpu_arm920_do_idle() */ .align 5 -ENTRY(cpu_arm920_do_idle) +SYM_TYPED_FUNC_START(cpu_arm920_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt ret lr - +SYM_FUNC_END(cpu_arm920_do_idle) #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -103,11 +106,11 @@ ENTRY(cpu_arm920_do_idle) * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm920_flush_icache_all) +SYM_TYPED_FUNC_START(arm920_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(arm920_flush_icache_all) +SYM_FUNC_END(arm920_flush_icache_all) /* * flush_user_cache_all() @@ -115,15 +118,14 @@ ENDPROC(arm920_flush_icache_all) * Invalidate all cache entries in a particular address * space. */ -ENTRY(arm920_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm920_flush_user_cache_all, arm920_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm920_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm920_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -138,6 +140,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm920_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -149,7 +152,7 @@ __flush_whole_cache: * - end - end address (exclusive) * - flags - vm_flags for address space */ -ENTRY(arm920_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm920_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -164,6 +167,7 @@ ENTRY(arm920_flush_user_cache_range) tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm920_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -175,8 +179,11 @@ ENTRY(arm920_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm920_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm920_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm920_coherent_user_range +#endif +SYM_FUNC_END(arm920_coherent_kern_range) /* * coherent_user_range(start, end) @@ -188,7 +195,7 @@ ENTRY(arm920_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm920_coherent_user_range) +SYM_TYPED_FUNC_START(arm920_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry @@ -198,6 +205,7 @@ ENTRY(arm920_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm920_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -208,7 +216,7 @@ ENTRY(arm920_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm920_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm920_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -218,6 +226,7 @@ ENTRY(arm920_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm920_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -272,7 +281,7 @@ arm920_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(arm920_dma_flush_range) +SYM_TYPED_FUNC_START(arm920_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -280,6 +289,7 @@ ENTRY(arm920_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm920_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -287,13 +297,13 @@ ENTRY(arm920_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm920_dma_map_area) +SYM_TYPED_FUNC_START(arm920_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm920_dma_clean_range bcs arm920_dma_inv_range b arm920_dma_flush_range -ENDPROC(arm920_dma_map_area) +SYM_FUNC_END(arm920_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -301,24 +311,20 @@ ENDPROC(arm920_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm920_dma_unmap_area) +SYM_TYPED_FUNC_START(arm920_dma_unmap_area) ret lr -ENDPROC(arm920_dma_unmap_area) +SYM_FUNC_END(arm920_dma_unmap_area) - .globl arm920_flush_kern_cache_louis - .equ arm920_flush_kern_cache_louis, arm920_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm920 -#endif +#endif /* !CONFIG_CPU_DCACHE_WRITETHROUGH */ -ENTRY(cpu_arm920_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm920_dcache_clean_area) 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE subs r1, r1, #CACHE_DLINESIZE bhi 1b ret lr +SYM_FUNC_END(cpu_arm920_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -330,7 +336,7 @@ ENTRY(cpu_arm920_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_arm920_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm920_switch_mm) #ifdef CONFIG_MMU mov ip, #0 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -354,6 +360,7 @@ ENTRY(cpu_arm920_switch_mm) mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs #endif ret lr +SYM_FUNC_END(cpu_arm920_switch_mm) /* * cpu_arm920_set_pte(ptep, pte, ext) @@ -361,7 +368,7 @@ ENTRY(cpu_arm920_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_arm920_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm920_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -369,21 +376,22 @@ ENTRY(cpu_arm920_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif ret lr +SYM_FUNC_END(cpu_arm920_set_pte_ext) /* Suspend/resume support: taken from arch/arm/plat-s3c24xx/sleep.S */ .globl cpu_arm920_suspend_size .equ cpu_arm920_suspend_size, 4 * 3 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_arm920_do_suspend) +SYM_TYPED_FUNC_START(cpu_arm920_do_suspend) stmfd sp!, {r4 - r6, lr} mrc p15, 0, r4, c13, c0, 0 @ PID mrc p15, 0, r5, c3, c0, 0 @ Domain ID mrc p15, 0, r6, c1, c0, 0 @ Control register stmia r0, {r4 - r6} ldmfd sp!, {r4 - r6, pc} -ENDPROC(cpu_arm920_do_suspend) +SYM_FUNC_END(cpu_arm920_do_suspend) -ENTRY(cpu_arm920_do_resume) +SYM_TYPED_FUNC_START(cpu_arm920_do_resume) mov ip, #0 mcr p15, 0, ip, c8, c7, 0 @ invalidate I+D TLBs mcr p15, 0, ip, c7, c7, 0 @ invalidate I+D caches @@ -393,7 +401,7 @@ ENTRY(cpu_arm920_do_resume) mcr p15, 0, r1, c2, c0, 0 @ TTB address mov r0, r6 @ control register b cpu_resume_mmu -ENDPROC(cpu_arm920_do_resume) +SYM_FUNC_END(cpu_arm920_do_resume) #endif .type __arm920_setup, #function diff --git a/arch/arm/mm/proc-arm922.S b/arch/arm/mm/proc-arm922.S index 53c029dcfd83..aac4e048100d 100644 --- a/arch/arm/mm/proc-arm922.S +++ b/arch/arm/mm/proc-arm922.S @@ -14,6 +14,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -50,18 +51,20 @@ /* * cpu_arm922_proc_init() */ -ENTRY(cpu_arm922_proc_init) +SYM_TYPED_FUNC_START(cpu_arm922_proc_init) ret lr +SYM_FUNC_END(cpu_arm922_proc_init) /* * cpu_arm922_proc_fin() */ -ENTRY(cpu_arm922_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm922_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm922_proc_fin) /* * cpu_arm922_reset(loc) @@ -74,7 +77,7 @@ ENTRY(cpu_arm922_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_arm922_reset) +SYM_TYPED_FUNC_START(cpu_arm922_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -86,17 +89,17 @@ ENTRY(cpu_arm922_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm922_reset) +SYM_FUNC_END(cpu_arm922_reset) .popsection /* * cpu_arm922_do_idle() */ .align 5 -ENTRY(cpu_arm922_do_idle) +SYM_TYPED_FUNC_START(cpu_arm922_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt ret lr - +SYM_FUNC_END(cpu_arm922_do_idle) #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -105,11 +108,11 @@ ENTRY(cpu_arm922_do_idle) * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm922_flush_icache_all) +SYM_TYPED_FUNC_START(arm922_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(arm922_flush_icache_all) +SYM_FUNC_END(arm922_flush_icache_all) /* * flush_user_cache_all() @@ -117,15 +120,14 @@ ENDPROC(arm922_flush_icache_all) * Clean and invalidate all cache entries in a particular * address space. */ -ENTRY(arm922_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm922_flush_user_cache_all, arm922_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm922_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm922_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -140,6 +142,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm922_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -151,7 +154,7 @@ __flush_whole_cache: * - end - end address (exclusive) * - flags - vm_flags describing address space */ -ENTRY(arm922_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm922_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -166,6 +169,7 @@ ENTRY(arm922_flush_user_cache_range) tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm922_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -177,8 +181,11 @@ ENTRY(arm922_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm922_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm922_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm922_coherent_user_range +#endif +SYM_FUNC_END(arm922_coherent_kern_range) /* * coherent_user_range(start, end) @@ -190,7 +197,7 @@ ENTRY(arm922_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm922_coherent_user_range) +SYM_TYPED_FUNC_START(arm922_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry @@ -200,6 +207,7 @@ ENTRY(arm922_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm922_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -210,7 +218,7 @@ ENTRY(arm922_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm922_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm922_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -220,6 +228,7 @@ ENTRY(arm922_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm922_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -274,7 +283,7 @@ arm922_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(arm922_dma_flush_range) +SYM_TYPED_FUNC_START(arm922_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -282,6 +291,7 @@ ENTRY(arm922_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm922_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -289,13 +299,13 @@ ENTRY(arm922_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm922_dma_map_area) +SYM_TYPED_FUNC_START(arm922_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm922_dma_clean_range bcs arm922_dma_inv_range b arm922_dma_flush_range -ENDPROC(arm922_dma_map_area) +SYM_FUNC_END(arm922_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -303,19 +313,13 @@ ENDPROC(arm922_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm922_dma_unmap_area) +SYM_TYPED_FUNC_START(arm922_dma_unmap_area) ret lr -ENDPROC(arm922_dma_unmap_area) - - .globl arm922_flush_kern_cache_louis - .equ arm922_flush_kern_cache_louis, arm922_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm922 -#endif +SYM_FUNC_END(arm922_dma_unmap_area) +#endif /* !CONFIG_CPU_DCACHE_WRITETHROUGH */ -ENTRY(cpu_arm922_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm922_dcache_clean_area) #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE @@ -323,6 +327,7 @@ ENTRY(cpu_arm922_dcache_clean_area) bhi 1b #endif ret lr +SYM_FUNC_END(cpu_arm922_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -334,7 +339,7 @@ ENTRY(cpu_arm922_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_arm922_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm922_switch_mm) #ifdef CONFIG_MMU mov ip, #0 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -358,6 +363,7 @@ ENTRY(cpu_arm922_switch_mm) mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs #endif ret lr +SYM_FUNC_END(cpu_arm922_switch_mm) /* * cpu_arm922_set_pte_ext(ptep, pte, ext) @@ -365,7 +371,7 @@ ENTRY(cpu_arm922_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_arm922_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm922_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -373,6 +379,7 @@ ENTRY(cpu_arm922_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif /* CONFIG_MMU */ ret lr +SYM_FUNC_END(cpu_arm922_set_pte_ext) .type __arm922_setup, #function __arm922_setup: diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S index 0bfad62ea858..035941faeb2e 100644 --- a/arch/arm/mm/proc-arm925.S +++ b/arch/arm/mm/proc-arm925.S @@ -37,6 +37,7 @@ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -71,18 +72,20 @@ /* * cpu_arm925_proc_init() */ -ENTRY(cpu_arm925_proc_init) +SYM_TYPED_FUNC_START(cpu_arm925_proc_init) ret lr +SYM_FUNC_END(cpu_arm925_proc_init) /* * cpu_arm925_proc_fin() */ -ENTRY(cpu_arm925_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm925_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm925_proc_fin) /* * cpu_arm925_reset(loc) @@ -95,14 +98,14 @@ ENTRY(cpu_arm925_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_arm925_reset) +SYM_TYPED_FUNC_START(cpu_arm925_reset) /* Send software reset to MPU and DSP */ mov ip, #0xff000000 orr ip, ip, #0x00fe0000 orr ip, ip, #0x0000ce00 mov r4, #1 strh r4, [ip, #0x10] -ENDPROC(cpu_arm925_reset) +SYM_FUNC_END(cpu_arm925_reset) .popsection mov ip, #0 @@ -123,7 +126,7 @@ ENDPROC(cpu_arm925_reset) * Called with IRQs disabled */ .align 10 -ENTRY(cpu_arm925_do_idle) +SYM_TYPED_FUNC_START(cpu_arm925_do_idle) mov r0, #0 mrc p15, 0, r1, c1, c0, 0 @ Read control register mcr p15, 0, r0, c7, c10, 4 @ Drain write buffer @@ -132,17 +135,18 @@ ENTRY(cpu_arm925_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt mcr p15, 0, r1, c1, c0, 0 @ Restore ICache enable ret lr +SYM_FUNC_END(cpu_arm925_do_idle) /* * flush_icache_all() * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm925_flush_icache_all) +SYM_TYPED_FUNC_START(arm925_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(arm925_flush_icache_all) +SYM_FUNC_END(arm925_flush_icache_all) /* * flush_user_cache_all() @@ -150,15 +154,14 @@ ENDPROC(arm925_flush_icache_all) * Clean and invalidate all cache entries in a particular * address space. */ -ENTRY(arm925_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm925_flush_user_cache_all, arm925_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm925_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm925_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -175,6 +178,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm925_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -186,7 +190,7 @@ __flush_whole_cache: * - end - end address (exclusive) * - flags - vm_flags describing address space */ -ENTRY(arm925_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm925_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -212,6 +216,7 @@ ENTRY(arm925_flush_user_cache_range) tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm925_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -223,8 +228,11 @@ ENTRY(arm925_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm925_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm925_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm925_coherent_user_range +#endif +SYM_FUNC_END(arm925_coherent_kern_range) /* * coherent_user_range(start, end) @@ -236,7 +244,7 @@ ENTRY(arm925_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm925_coherent_user_range) +SYM_TYPED_FUNC_START(arm925_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry @@ -246,6 +254,7 @@ ENTRY(arm925_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm925_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -256,7 +265,7 @@ ENTRY(arm925_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm925_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm925_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -266,6 +275,7 @@ ENTRY(arm925_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm925_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -324,7 +334,7 @@ arm925_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(arm925_dma_flush_range) +SYM_TYPED_FUNC_START(arm925_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -337,6 +347,7 @@ ENTRY(arm925_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm925_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -344,13 +355,13 @@ ENTRY(arm925_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm925_dma_map_area) +SYM_TYPED_FUNC_START(arm925_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm925_dma_clean_range bcs arm925_dma_inv_range b arm925_dma_flush_range -ENDPROC(arm925_dma_map_area) +SYM_FUNC_END(arm925_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -358,17 +369,11 @@ ENDPROC(arm925_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm925_dma_unmap_area) +SYM_TYPED_FUNC_START(arm925_dma_unmap_area) ret lr -ENDPROC(arm925_dma_unmap_area) - - .globl arm925_flush_kern_cache_louis - .equ arm925_flush_kern_cache_louis, arm925_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm925 +SYM_FUNC_END(arm925_dma_unmap_area) -ENTRY(cpu_arm925_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm925_dcache_clean_area) #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE @@ -377,6 +382,7 @@ ENTRY(cpu_arm925_dcache_clean_area) #endif mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(cpu_arm925_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -388,7 +394,7 @@ ENTRY(cpu_arm925_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_arm925_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm925_switch_mm) #ifdef CONFIG_MMU mov ip, #0 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -406,6 +412,7 @@ ENTRY(cpu_arm925_switch_mm) mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs #endif ret lr +SYM_FUNC_END(cpu_arm925_switch_mm) /* * cpu_arm925_set_pte_ext(ptep, pte, ext) @@ -413,7 +420,7 @@ ENTRY(cpu_arm925_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_arm925_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm925_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -423,6 +430,7 @@ ENTRY(cpu_arm925_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif /* CONFIG_MMU */ ret lr +SYM_FUNC_END(cpu_arm925_set_pte_ext) .type __arm925_setup, #function __arm925_setup: diff --git a/arch/arm/mm/proc-arm926.S b/arch/arm/mm/proc-arm926.S index 0487a2c3439b..6f43d6af2d9a 100644 --- a/arch/arm/mm/proc-arm926.S +++ b/arch/arm/mm/proc-arm926.S @@ -13,6 +13,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -40,18 +41,20 @@ /* * cpu_arm926_proc_init() */ -ENTRY(cpu_arm926_proc_init) +SYM_TYPED_FUNC_START(cpu_arm926_proc_init) ret lr +SYM_FUNC_END(cpu_arm926_proc_init) /* * cpu_arm926_proc_fin() */ -ENTRY(cpu_arm926_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm926_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm926_proc_fin) /* * cpu_arm926_reset(loc) @@ -64,7 +67,7 @@ ENTRY(cpu_arm926_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_arm926_reset) +SYM_TYPED_FUNC_START(cpu_arm926_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -76,7 +79,7 @@ ENTRY(cpu_arm926_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm926_reset) +SYM_FUNC_END(cpu_arm926_reset) .popsection /* @@ -85,7 +88,7 @@ ENDPROC(cpu_arm926_reset) * Called with IRQs disabled */ .align 10 -ENTRY(cpu_arm926_do_idle) +SYM_TYPED_FUNC_START(cpu_arm926_do_idle) mov r0, #0 mrc p15, 0, r1, c1, c0, 0 @ Read control register mcr p15, 0, r0, c7, c10, 4 @ Drain write buffer @@ -98,17 +101,18 @@ ENTRY(cpu_arm926_do_idle) mcr p15, 0, r1, c1, c0, 0 @ Restore ICache enable msr cpsr_c, r3 @ Restore FIQ state ret lr +SYM_FUNC_END(cpu_arm926_do_idle) /* * flush_icache_all() * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm926_flush_icache_all) +SYM_TYPED_FUNC_START(arm926_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(arm926_flush_icache_all) +SYM_FUNC_END(arm926_flush_icache_all) /* * flush_user_cache_all() @@ -116,15 +120,14 @@ ENDPROC(arm926_flush_icache_all) * Clean and invalidate all cache entries in a particular * address space. */ -ENTRY(arm926_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm926_flush_user_cache_all, arm926_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm926_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm926_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -138,6 +141,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm926_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -149,7 +153,7 @@ __flush_whole_cache: * - end - end address (exclusive) * - flags - vm_flags describing address space */ -ENTRY(arm926_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm926_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -175,6 +179,7 @@ ENTRY(arm926_flush_user_cache_range) tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm926_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -186,8 +191,11 @@ ENTRY(arm926_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm926_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm926_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm926_coherent_user_range +#endif +SYM_FUNC_END(arm926_coherent_kern_range) /* * coherent_user_range(start, end) @@ -199,7 +207,7 @@ ENTRY(arm926_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm926_coherent_user_range) +SYM_TYPED_FUNC_START(arm926_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry @@ -209,6 +217,7 @@ ENTRY(arm926_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm926_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -219,7 +228,7 @@ ENTRY(arm926_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm926_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm926_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -229,6 +238,7 @@ ENTRY(arm926_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm926_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -287,7 +297,7 @@ arm926_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(arm926_dma_flush_range) +SYM_TYPED_FUNC_START(arm926_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -300,6 +310,7 @@ ENTRY(arm926_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm926_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -307,13 +318,13 @@ ENTRY(arm926_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm926_dma_map_area) +SYM_TYPED_FUNC_START(arm926_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm926_dma_clean_range bcs arm926_dma_inv_range b arm926_dma_flush_range -ENDPROC(arm926_dma_map_area) +SYM_FUNC_END(arm926_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -321,17 +332,11 @@ ENDPROC(arm926_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm926_dma_unmap_area) +SYM_TYPED_FUNC_START(arm926_dma_unmap_area) ret lr -ENDPROC(arm926_dma_unmap_area) - - .globl arm926_flush_kern_cache_louis - .equ arm926_flush_kern_cache_louis, arm926_flush_kern_cache_all +SYM_FUNC_END(arm926_dma_unmap_area) - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm926 - -ENTRY(cpu_arm926_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm926_dcache_clean_area) #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE @@ -340,6 +345,7 @@ ENTRY(cpu_arm926_dcache_clean_area) #endif mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(cpu_arm926_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -351,7 +357,8 @@ ENTRY(cpu_arm926_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_arm926_switch_mm) + +SYM_TYPED_FUNC_START(cpu_arm926_switch_mm) #ifdef CONFIG_MMU mov ip, #0 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -367,6 +374,7 @@ ENTRY(cpu_arm926_switch_mm) mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs #endif ret lr +SYM_FUNC_END(cpu_arm926_switch_mm) /* * cpu_arm926_set_pte_ext(ptep, pte, ext) @@ -374,7 +382,7 @@ ENTRY(cpu_arm926_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_arm926_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_arm926_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -384,21 +392,22 @@ ENTRY(cpu_arm926_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif ret lr +SYM_FUNC_END(cpu_arm926_set_pte_ext) /* Suspend/resume support: taken from arch/arm/plat-s3c24xx/sleep.S */ .globl cpu_arm926_suspend_size .equ cpu_arm926_suspend_size, 4 * 3 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_arm926_do_suspend) +SYM_TYPED_FUNC_START(cpu_arm926_do_suspend) stmfd sp!, {r4 - r6, lr} mrc p15, 0, r4, c13, c0, 0 @ PID mrc p15, 0, r5, c3, c0, 0 @ Domain ID mrc p15, 0, r6, c1, c0, 0 @ Control register stmia r0, {r4 - r6} ldmfd sp!, {r4 - r6, pc} -ENDPROC(cpu_arm926_do_suspend) +SYM_FUNC_END(cpu_arm926_do_suspend) -ENTRY(cpu_arm926_do_resume) +SYM_TYPED_FUNC_START(cpu_arm926_do_resume) mov ip, #0 mcr p15, 0, ip, c8, c7, 0 @ invalidate I+D TLBs mcr p15, 0, ip, c7, c7, 0 @ invalidate I+D caches @@ -408,7 +417,7 @@ ENTRY(cpu_arm926_do_resume) mcr p15, 0, r1, c2, c0, 0 @ TTB address mov r0, r6 @ control register b cpu_resume_mmu -ENDPROC(cpu_arm926_do_resume) +SYM_FUNC_END(cpu_arm926_do_resume) #endif .type __arm926_setup, #function diff --git a/arch/arm/mm/proc-arm940.S b/arch/arm/mm/proc-arm940.S index cf9bfcc825ca..0d30bb25c42b 100644 --- a/arch/arm/mm/proc-arm940.S +++ b/arch/arm/mm/proc-arm940.S @@ -6,6 +6,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -25,19 +26,24 @@ * * These are not required. */ -ENTRY(cpu_arm940_proc_init) -ENTRY(cpu_arm940_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm940_proc_init) ret lr +SYM_FUNC_END(cpu_arm940_proc_init) + +SYM_TYPED_FUNC_START(cpu_arm940_switch_mm) + ret lr +SYM_FUNC_END(cpu_arm940_switch_mm) /* * cpu_arm940_proc_fin() */ -ENTRY(cpu_arm940_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm940_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x00001000 @ i-cache bic r0, r0, #0x00000004 @ d-cache mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm940_proc_fin) /* * cpu_arm940_reset(loc) @@ -45,7 +51,7 @@ ENTRY(cpu_arm940_proc_fin) * Notes : This sets up everything for a reset */ .pushsection .idmap.text, "ax" -ENTRY(cpu_arm940_reset) +SYM_TYPED_FUNC_START(cpu_arm940_reset) mov ip, #0 mcr p15, 0, ip, c7, c5, 0 @ flush I cache mcr p15, 0, ip, c7, c6, 0 @ flush D cache @@ -55,42 +61,43 @@ ENTRY(cpu_arm940_reset) bic ip, ip, #0x00001000 @ i-cache mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm940_reset) +SYM_FUNC_END(cpu_arm940_reset) .popsection /* * cpu_arm940_do_idle() */ .align 5 -ENTRY(cpu_arm940_do_idle) +SYM_TYPED_FUNC_START(cpu_arm940_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt ret lr +SYM_FUNC_END(cpu_arm940_do_idle) /* * flush_icache_all() * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm940_flush_icache_all) +SYM_TYPED_FUNC_START(arm940_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(arm940_flush_icache_all) +SYM_FUNC_END(arm940_flush_icache_all) /* * flush_user_cache_all() */ -ENTRY(arm940_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm940_flush_user_cache_all, arm940_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm940_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm940_flush_kern_cache_all) mov r2, #VM_EXEC - /* FALLTHROUGH */ + b arm940_flush_user_cache_range +SYM_FUNC_END(arm940_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -102,7 +109,7 @@ ENTRY(arm940_flush_kern_cache_all) * - end - end address (exclusive) * - flags - vm_flags describing address space */ -ENTRY(arm940_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm940_flush_user_cache_range) mov ip, #0 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH mcr p15, 0, ip, c7, c6, 0 @ flush D cache @@ -119,6 +126,7 @@ ENTRY(arm940_flush_user_cache_range) mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm940_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -130,8 +138,9 @@ ENTRY(arm940_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm940_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm940_coherent_kern_range) + b arm940_flush_kern_dcache_area +SYM_FUNC_END(arm940_coherent_kern_range) /* * coherent_user_range(start, end) @@ -143,8 +152,11 @@ ENTRY(arm940_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm940_coherent_user_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm940_coherent_user_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm940_flush_kern_dcache_area +#endif +SYM_FUNC_END(arm940_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -155,7 +167,7 @@ ENTRY(arm940_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(arm940_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm940_flush_kern_dcache_area) mov r0, #0 mov r1, #(CACHE_DSEGMENTS - 1) << 4 @ 4 segments 1: orr r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries @@ -167,6 +179,7 @@ ENTRY(arm940_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm940_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -199,7 +212,7 @@ arm940_dma_inv_range: * - end - virtual end address */ arm940_dma_clean_range: -ENTRY(cpu_arm940_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm940_dcache_clean_area) mov ip, #0 #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH mov r1, #(CACHE_DSEGMENTS - 1) << 4 @ 4 segments @@ -212,6 +225,7 @@ ENTRY(cpu_arm940_dcache_clean_area) #endif mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(cpu_arm940_dcache_clean_area) /* * dma_flush_range(start, end) @@ -222,7 +236,7 @@ ENTRY(cpu_arm940_dcache_clean_area) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm940_dma_flush_range) +SYM_TYPED_FUNC_START(arm940_dma_flush_range) mov ip, #0 mov r1, #(CACHE_DSEGMENTS - 1) << 4 @ 4 segments 1: orr r3, r1, #(CACHE_DENTRIES - 1) << 26 @ 64 entries @@ -238,6 +252,7 @@ ENTRY(arm940_dma_flush_range) bcs 1b @ segments 7 to 0 mcr p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm940_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -245,13 +260,13 @@ ENTRY(arm940_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm940_dma_map_area) +SYM_TYPED_FUNC_START(arm940_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm940_dma_clean_range bcs arm940_dma_inv_range b arm940_dma_flush_range -ENDPROC(arm940_dma_map_area) +SYM_FUNC_END(arm940_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -259,15 +274,9 @@ ENDPROC(arm940_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm940_dma_unmap_area) +SYM_TYPED_FUNC_START(arm940_dma_unmap_area) ret lr -ENDPROC(arm940_dma_unmap_area) - - .globl arm940_flush_kern_cache_louis - .equ arm940_flush_kern_cache_louis, arm940_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm940 +SYM_FUNC_END(arm940_dma_unmap_area) .type __arm940_setup, #function __arm940_setup: diff --git a/arch/arm/mm/proc-arm946.S b/arch/arm/mm/proc-arm946.S index 6fb3898ad1cd..27750ace2ced 100644 --- a/arch/arm/mm/proc-arm946.S +++ b/arch/arm/mm/proc-arm946.S @@ -8,6 +8,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -32,19 +33,24 @@ * * These are not required. */ -ENTRY(cpu_arm946_proc_init) -ENTRY(cpu_arm946_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm946_proc_init) ret lr +SYM_FUNC_END(cpu_arm946_proc_init) + +SYM_TYPED_FUNC_START(cpu_arm946_switch_mm) + ret lr +SYM_FUNC_END(cpu_arm946_switch_mm) /* * cpu_arm946_proc_fin() */ -ENTRY(cpu_arm946_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm946_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x00001000 @ i-cache bic r0, r0, #0x00000004 @ d-cache mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_arm946_proc_fin) /* * cpu_arm946_reset(loc) @@ -52,7 +58,7 @@ ENTRY(cpu_arm946_proc_fin) * Notes : This sets up everything for a reset */ .pushsection .idmap.text, "ax" -ENTRY(cpu_arm946_reset) +SYM_TYPED_FUNC_START(cpu_arm946_reset) mov ip, #0 mcr p15, 0, ip, c7, c5, 0 @ flush I cache mcr p15, 0, ip, c7, c6, 0 @ flush D cache @@ -62,40 +68,40 @@ ENTRY(cpu_arm946_reset) bic ip, ip, #0x00001000 @ i-cache mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_arm946_reset) +SYM_FUNC_END(cpu_arm946_reset) .popsection /* * cpu_arm946_do_idle() */ .align 5 -ENTRY(cpu_arm946_do_idle) +SYM_TYPED_FUNC_START(cpu_arm946_do_idle) mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt ret lr +SYM_FUNC_END(cpu_arm946_do_idle) /* * flush_icache_all() * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(arm946_flush_icache_all) +SYM_TYPED_FUNC_START(arm946_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(arm946_flush_icache_all) +SYM_FUNC_END(arm946_flush_icache_all) /* * flush_user_cache_all() */ -ENTRY(arm946_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(arm946_flush_user_cache_all, arm946_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(arm946_flush_kern_cache_all) +SYM_TYPED_FUNC_START(arm946_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -114,6 +120,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ flush I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm946_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -126,7 +133,7 @@ __flush_whole_cache: * - flags - vm_flags describing address space * (same as arm926) */ -ENTRY(arm946_flush_user_cache_range) +SYM_TYPED_FUNC_START(arm946_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -153,6 +160,7 @@ ENTRY(arm946_flush_user_cache_range) tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm946_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -164,8 +172,11 @@ ENTRY(arm946_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(arm946_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(arm946_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b arm946_coherent_user_range +#endif +SYM_FUNC_END(arm946_coherent_kern_range) /* * coherent_user_range(start, end) @@ -178,7 +189,7 @@ ENTRY(arm946_coherent_kern_range) * - end - virtual end address * (same as arm926) */ -ENTRY(arm946_coherent_user_range) +SYM_TYPED_FUNC_START(arm946_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry @@ -188,6 +199,7 @@ ENTRY(arm946_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(arm946_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -199,7 +211,7 @@ ENTRY(arm946_coherent_user_range) * - size - region size * (same as arm926) */ -ENTRY(arm946_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(arm946_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -209,6 +221,7 @@ ENTRY(arm946_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm946_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -268,7 +281,7 @@ arm946_dma_clean_range: * * (same as arm926) */ -ENTRY(arm946_dma_flush_range) +SYM_TYPED_FUNC_START(arm946_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -281,6 +294,7 @@ ENTRY(arm946_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(arm946_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -288,13 +302,13 @@ ENTRY(arm946_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(arm946_dma_map_area) +SYM_TYPED_FUNC_START(arm946_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq arm946_dma_clean_range bcs arm946_dma_inv_range b arm946_dma_flush_range -ENDPROC(arm946_dma_map_area) +SYM_FUNC_END(arm946_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -302,17 +316,11 @@ ENDPROC(arm946_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(arm946_dma_unmap_area) +SYM_TYPED_FUNC_START(arm946_dma_unmap_area) ret lr -ENDPROC(arm946_dma_unmap_area) - - .globl arm946_flush_kern_cache_louis - .equ arm946_flush_kern_cache_louis, arm946_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions arm946 +SYM_FUNC_END(arm946_dma_unmap_area) -ENTRY(cpu_arm946_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_arm946_dcache_clean_area) #ifndef CONFIG_CPU_DCACHE_WRITETHROUGH 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE @@ -321,6 +329,7 @@ ENTRY(cpu_arm946_dcache_clean_area) #endif mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(cpu_arm946_dcache_clean_area) .type __arm946_setup, #function __arm946_setup: diff --git a/arch/arm/mm/proc-arm9tdmi.S b/arch/arm/mm/proc-arm9tdmi.S index a054c0e9c034..c480a8400eff 100644 --- a/arch/arm/mm/proc-arm9tdmi.S +++ b/arch/arm/mm/proc-arm9tdmi.S @@ -6,6 +6,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -24,17 +25,28 @@ * * These are not required. */ -ENTRY(cpu_arm9tdmi_proc_init) -ENTRY(cpu_arm9tdmi_do_idle) -ENTRY(cpu_arm9tdmi_dcache_clean_area) -ENTRY(cpu_arm9tdmi_switch_mm) +SYM_TYPED_FUNC_START(cpu_arm9tdmi_proc_init) ret lr +SYM_FUNC_END(cpu_arm9tdmi_proc_init) + +SYM_TYPED_FUNC_START(cpu_arm9tdmi_do_idle) + ret lr +SYM_FUNC_END(cpu_arm9tdmi_do_idle) + +SYM_TYPED_FUNC_START(cpu_arm9tdmi_dcache_clean_area) + ret lr +SYM_FUNC_END(cpu_arm9tdmi_dcache_clean_area) + +SYM_TYPED_FUNC_START(cpu_arm9tdmi_switch_mm) + ret lr +SYM_FUNC_END(cpu_arm9tdmi_switch_mm) /* * cpu_arm9tdmi_proc_fin() */ -ENTRY(cpu_arm9tdmi_proc_fin) +SYM_TYPED_FUNC_START(cpu_arm9tdmi_proc_fin) ret lr +SYM_FUNC_END(cpu_arm9tdmi_proc_fin) /* * Function: cpu_arm9tdmi_reset(loc) @@ -42,9 +54,9 @@ ENTRY(cpu_arm9tdmi_proc_fin) * Purpose : Sets up everything for a reset and jump to the location for soft reset. */ .pushsection .idmap.text, "ax" -ENTRY(cpu_arm9tdmi_reset) +SYM_TYPED_FUNC_START(cpu_arm9tdmi_reset) ret r0 -ENDPROC(cpu_arm9tdmi_reset) +SYM_FUNC_END(cpu_arm9tdmi_reset) .popsection .type __arm9tdmi_setup, #function diff --git a/arch/arm/mm/proc-fa526.S b/arch/arm/mm/proc-fa526.S index 2c73e0d47d08..7c16ccac8a05 100644 --- a/arch/arm/mm/proc-fa526.S +++ b/arch/arm/mm/proc-fa526.S @@ -11,6 +11,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -26,13 +27,14 @@ /* * cpu_fa526_proc_init() */ -ENTRY(cpu_fa526_proc_init) +SYM_TYPED_FUNC_START(cpu_fa526_proc_init) ret lr +SYM_FUNC_END(cpu_fa526_proc_init) /* * cpu_fa526_proc_fin() */ -ENTRY(cpu_fa526_proc_fin) +SYM_TYPED_FUNC_START(cpu_fa526_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. @@ -40,6 +42,7 @@ ENTRY(cpu_fa526_proc_fin) nop nop ret lr +SYM_FUNC_END(cpu_fa526_proc_fin) /* * cpu_fa526_reset(loc) @@ -52,7 +55,7 @@ ENTRY(cpu_fa526_proc_fin) */ .align 4 .pushsection .idmap.text, "ax" -ENTRY(cpu_fa526_reset) +SYM_TYPED_FUNC_START(cpu_fa526_reset) /* TODO: Use CP8 if possible... */ mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches @@ -68,24 +71,25 @@ ENTRY(cpu_fa526_reset) nop nop ret r0 -ENDPROC(cpu_fa526_reset) +SYM_FUNC_END(cpu_fa526_reset) .popsection /* * cpu_fa526_do_idle() */ .align 4 -ENTRY(cpu_fa526_do_idle) +SYM_TYPED_FUNC_START(cpu_fa526_do_idle) ret lr +SYM_FUNC_END(cpu_fa526_do_idle) - -ENTRY(cpu_fa526_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_fa526_dcache_clean_area) 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE subs r1, r1, #CACHE_DLINESIZE bhi 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(cpu_fa526_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -97,7 +101,7 @@ ENTRY(cpu_fa526_dcache_clean_area) * pgd: new page tables */ .align 4 -ENTRY(cpu_fa526_switch_mm) +SYM_TYPED_FUNC_START(cpu_fa526_switch_mm) #ifdef CONFIG_MMU mov ip, #0 #ifdef CONFIG_CPU_DCACHE_WRITETHROUGH @@ -113,6 +117,7 @@ ENTRY(cpu_fa526_switch_mm) mcr p15, 0, ip, c8, c7, 0 @ invalidate UTLB #endif ret lr +SYM_FUNC_END(cpu_fa526_switch_mm) /* * cpu_fa526_set_pte_ext(ptep, pte, ext) @@ -120,7 +125,7 @@ ENTRY(cpu_fa526_switch_mm) * Set a PTE and flush it out */ .align 4 -ENTRY(cpu_fa526_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_fa526_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -129,6 +134,7 @@ ENTRY(cpu_fa526_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif ret lr +SYM_FUNC_END(cpu_fa526_set_pte_ext) .type __fa526_setup, #function __fa526_setup: diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S index 072ff9b451f8..f67b2ffac854 100644 --- a/arch/arm/mm/proc-feroceon.S +++ b/arch/arm/mm/proc-feroceon.S @@ -8,6 +8,7 @@ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -43,7 +44,7 @@ __cache_params: /* * cpu_feroceon_proc_init() */ -ENTRY(cpu_feroceon_proc_init) +SYM_TYPED_FUNC_START(cpu_feroceon_proc_init) mrc p15, 0, r0, c0, c0, 1 @ read cache type register ldr r1, __cache_params mov r2, #(16 << 5) @@ -61,11 +62,12 @@ ENTRY(cpu_feroceon_proc_init) str_l r1, VFP_arch_feroceon, r2 #endif ret lr +SYM_FUNC_END(cpu_feroceon_proc_init) /* * cpu_feroceon_proc_fin() */ -ENTRY(cpu_feroceon_proc_fin) +SYM_TYPED_FUNC_START(cpu_feroceon_proc_fin) #if defined(CONFIG_CACHE_FEROCEON_L2) && \ !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mov r0, #0 @@ -78,6 +80,7 @@ ENTRY(cpu_feroceon_proc_fin) bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_feroceon_proc_fin) /* * cpu_feroceon_reset(loc) @@ -90,7 +93,7 @@ ENTRY(cpu_feroceon_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_feroceon_reset) +SYM_TYPED_FUNC_START(cpu_feroceon_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -102,7 +105,7 @@ ENTRY(cpu_feroceon_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_feroceon_reset) +SYM_FUNC_END(cpu_feroceon_reset) .popsection /* @@ -111,22 +114,23 @@ ENDPROC(cpu_feroceon_reset) * Called with IRQs disabled */ .align 5 -ENTRY(cpu_feroceon_do_idle) +SYM_TYPED_FUNC_START(cpu_feroceon_do_idle) mov r0, #0 mcr p15, 0, r0, c7, c10, 4 @ Drain write buffer mcr p15, 0, r0, c7, c0, 4 @ Wait for interrupt ret lr +SYM_FUNC_END(cpu_feroceon_do_idle) /* * flush_icache_all() * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(feroceon_flush_icache_all) +SYM_TYPED_FUNC_START(feroceon_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(feroceon_flush_icache_all) +SYM_FUNC_END(feroceon_flush_icache_all) /* * flush_user_cache_all() @@ -135,15 +139,14 @@ ENDPROC(feroceon_flush_icache_all) * address space. */ .align 5 -ENTRY(feroceon_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(feroceon_flush_user_cache_all, feroceon_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(feroceon_flush_kern_cache_all) +SYM_TYPED_FUNC_START(feroceon_flush_kern_cache_all) mov r2, #VM_EXEC __flush_whole_cache: @@ -161,6 +164,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(feroceon_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -173,7 +177,7 @@ __flush_whole_cache: * - flags - vm_flags describing address space */ .align 5 -ENTRY(feroceon_flush_user_cache_range) +SYM_TYPED_FUNC_START(feroceon_flush_user_cache_range) sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT bgt __flush_whole_cache @@ -190,6 +194,7 @@ ENTRY(feroceon_flush_user_cache_range) mov ip, #0 mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(feroceon_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -202,8 +207,11 @@ ENTRY(feroceon_flush_user_cache_range) * - end - virtual end address */ .align 5 -ENTRY(feroceon_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(feroceon_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b feroceon_coherent_user_range +#endif +SYM_FUNC_END(feroceon_coherent_kern_range) /* * coherent_user_range(start, end) @@ -215,7 +223,7 @@ ENTRY(feroceon_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(feroceon_coherent_user_range) +SYM_TYPED_FUNC_START(feroceon_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry @@ -225,6 +233,7 @@ ENTRY(feroceon_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(feroceon_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -236,7 +245,7 @@ ENTRY(feroceon_coherent_user_range) * - size - region size */ .align 5 -ENTRY(feroceon_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(feroceon_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -246,9 +255,10 @@ ENTRY(feroceon_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(feroceon_flush_kern_dcache_area) .align 5 -ENTRY(feroceon_range_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(feroceon_range_flush_kern_dcache_area) mrs r2, cpsr add r1, r0, #PAGE_SZ - CACHE_DLINESIZE @ top addr is inclusive orr r3, r2, #PSR_I_BIT @@ -260,6 +270,7 @@ ENTRY(feroceon_range_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(feroceon_range_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -346,7 +357,7 @@ feroceon_range_dma_clean_range: * - end - virtual end address */ .align 5 -ENTRY(feroceon_dma_flush_range) +SYM_TYPED_FUNC_START(feroceon_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -354,9 +365,10 @@ ENTRY(feroceon_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(feroceon_dma_flush_range) .align 5 -ENTRY(feroceon_range_dma_flush_range) +SYM_TYPED_FUNC_START(feroceon_range_dma_flush_range) mrs r2, cpsr cmp r1, r0 subne r1, r1, #1 @ top address is inclusive @@ -367,6 +379,7 @@ ENTRY(feroceon_range_dma_flush_range) msr cpsr_c, r2 @ restore interrupts mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(feroceon_range_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -374,13 +387,13 @@ ENTRY(feroceon_range_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(feroceon_dma_map_area) +SYM_TYPED_FUNC_START(feroceon_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq feroceon_dma_clean_range bcs feroceon_dma_inv_range b feroceon_dma_flush_range -ENDPROC(feroceon_dma_map_area) +SYM_FUNC_END(feroceon_dma_map_area) /* * dma_map_area(start, size, dir) @@ -388,13 +401,13 @@ ENDPROC(feroceon_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(feroceon_range_dma_map_area) +SYM_TYPED_FUNC_START(feroceon_range_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq feroceon_range_dma_clean_range bcs feroceon_range_dma_inv_range b feroceon_range_dma_flush_range -ENDPROC(feroceon_range_dma_map_area) +SYM_FUNC_END(feroceon_range_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -402,39 +415,12 @@ ENDPROC(feroceon_range_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(feroceon_dma_unmap_area) +SYM_TYPED_FUNC_START(feroceon_dma_unmap_area) ret lr -ENDPROC(feroceon_dma_unmap_area) - - .globl feroceon_flush_kern_cache_louis - .equ feroceon_flush_kern_cache_louis, feroceon_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions feroceon - -.macro range_alias basename - .globl feroceon_range_\basename - .type feroceon_range_\basename , %function - .equ feroceon_range_\basename , feroceon_\basename -.endm - -/* - * Most of the cache functions are unchanged for this case. - * Export suitable alias symbols for the unchanged functions: - */ - range_alias flush_icache_all - range_alias flush_user_cache_all - range_alias flush_kern_cache_all - range_alias flush_kern_cache_louis - range_alias flush_user_cache_range - range_alias coherent_kern_range - range_alias coherent_user_range - range_alias dma_unmap_area - - define_cache_functions feroceon_range +SYM_FUNC_END(feroceon_dma_unmap_area) .align 5 -ENTRY(cpu_feroceon_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_feroceon_dcache_clean_area) #if defined(CONFIG_CACHE_FEROCEON_L2) && \ !defined(CONFIG_CACHE_FEROCEON_L2_WRITETHROUGH) mov r2, r0 @@ -453,6 +439,7 @@ ENTRY(cpu_feroceon_dcache_clean_area) #endif mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(cpu_feroceon_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -464,7 +451,7 @@ ENTRY(cpu_feroceon_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_feroceon_switch_mm) +SYM_TYPED_FUNC_START(cpu_feroceon_switch_mm) #ifdef CONFIG_MMU /* * Note: we wish to call __flush_whole_cache but we need to preserve @@ -485,6 +472,7 @@ ENTRY(cpu_feroceon_switch_mm) #else ret lr #endif +SYM_FUNC_END(cpu_feroceon_switch_mm) /* * cpu_feroceon_set_pte_ext(ptep, pte, ext) @@ -492,7 +480,7 @@ ENTRY(cpu_feroceon_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_feroceon_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_feroceon_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext wc_disable=0 mov r0, r0 @@ -504,21 +492,22 @@ ENTRY(cpu_feroceon_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif ret lr +SYM_FUNC_END(cpu_feroceon_set_pte_ext) /* Suspend/resume support: taken from arch/arm/mm/proc-arm926.S */ .globl cpu_feroceon_suspend_size .equ cpu_feroceon_suspend_size, 4 * 3 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_feroceon_do_suspend) +SYM_TYPED_FUNC_START(cpu_feroceon_do_suspend) stmfd sp!, {r4 - r6, lr} mrc p15, 0, r4, c13, c0, 0 @ PID mrc p15, 0, r5, c3, c0, 0 @ Domain ID mrc p15, 0, r6, c1, c0, 0 @ Control register stmia r0, {r4 - r6} ldmfd sp!, {r4 - r6, pc} -ENDPROC(cpu_feroceon_do_suspend) +SYM_FUNC_END(cpu_feroceon_do_suspend) -ENTRY(cpu_feroceon_do_resume) +SYM_TYPED_FUNC_START(cpu_feroceon_do_resume) mov ip, #0 mcr p15, 0, ip, c8, c7, 0 @ invalidate I+D TLBs mcr p15, 0, ip, c7, c7, 0 @ invalidate I+D caches @@ -528,7 +517,7 @@ ENTRY(cpu_feroceon_do_resume) mcr p15, 0, r1, c2, c0, 0 @ TTB address mov r0, r6 @ control register b cpu_resume_mmu -ENDPROC(cpu_feroceon_do_resume) +SYM_FUNC_END(cpu_feroceon_do_resume) #endif .type __feroceon_setup, #function diff --git a/arch/arm/mm/proc-macros.S b/arch/arm/mm/proc-macros.S index e43f6d716b4b..e388c4cc0c44 100644 --- a/arch/arm/mm/proc-macros.S +++ b/arch/arm/mm/proc-macros.S @@ -320,39 +320,6 @@ ENTRY(\name\()_processor_functions) #endif .endm -.macro define_cache_functions name:req - .align 2 - .type \name\()_cache_fns, #object -ENTRY(\name\()_cache_fns) - .long \name\()_flush_icache_all - .long \name\()_flush_kern_cache_all - .long \name\()_flush_kern_cache_louis - .long \name\()_flush_user_cache_all - .long \name\()_flush_user_cache_range - .long \name\()_coherent_kern_range - .long \name\()_coherent_user_range - .long \name\()_flush_kern_dcache_area - .long \name\()_dma_map_area - .long \name\()_dma_unmap_area - .long \name\()_dma_flush_range - .size \name\()_cache_fns, . - \name\()_cache_fns -.endm - -.macro define_tlb_functions name:req, flags_up:req, flags_smp - .type \name\()_tlb_fns, #object - .align 2 -ENTRY(\name\()_tlb_fns) - .long \name\()_flush_user_tlb_range - .long \name\()_flush_kern_tlb_range - .ifnb \flags_smp - ALT_SMP(.long \flags_smp ) - ALT_UP(.long \flags_up ) - .else - .long \flags_up - .endif - .size \name\()_tlb_fns, . - \name\()_tlb_fns -.endm - .macro globl_equ x, y .globl \x .equ \x, \y diff --git a/arch/arm/mm/proc-mohawk.S b/arch/arm/mm/proc-mohawk.S index 1645ccaffe96..8e9f38da863a 100644 --- a/arch/arm/mm/proc-mohawk.S +++ b/arch/arm/mm/proc-mohawk.S @@ -9,6 +9,7 @@ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -31,18 +32,20 @@ /* * cpu_mohawk_proc_init() */ -ENTRY(cpu_mohawk_proc_init) +SYM_TYPED_FUNC_START(cpu_mohawk_proc_init) ret lr +SYM_FUNC_END(cpu_mohawk_proc_init) /* * cpu_mohawk_proc_fin() */ -ENTRY(cpu_mohawk_proc_fin) +SYM_TYPED_FUNC_START(cpu_mohawk_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1800 @ ...iz........... bic r0, r0, #0x0006 @ .............ca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_mohawk_proc_fin) /* * cpu_mohawk_reset(loc) @@ -57,7 +60,7 @@ ENTRY(cpu_mohawk_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_mohawk_reset) +SYM_TYPED_FUNC_START(cpu_mohawk_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -67,7 +70,7 @@ ENTRY(cpu_mohawk_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_mohawk_reset) +SYM_FUNC_END(cpu_mohawk_reset) .popsection /* @@ -76,22 +79,23 @@ ENDPROC(cpu_mohawk_reset) * Called with IRQs disabled */ .align 5 -ENTRY(cpu_mohawk_do_idle) +SYM_TYPED_FUNC_START(cpu_mohawk_do_idle) mov r0, #0 mcr p15, 0, r0, c7, c10, 4 @ drain write buffer mcr p15, 0, r0, c7, c0, 4 @ wait for interrupt ret lr +SYM_FUNC_END(cpu_mohawk_do_idle) /* * flush_icache_all() * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(mohawk_flush_icache_all) +SYM_TYPED_FUNC_START(mohawk_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(mohawk_flush_icache_all) +SYM_FUNC_END(mohawk_flush_icache_all) /* * flush_user_cache_all() @@ -99,15 +103,14 @@ ENDPROC(mohawk_flush_icache_all) * Clean and invalidate all cache entries in a particular * address space. */ -ENTRY(mohawk_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(mohawk_flush_user_cache_all, mohawk_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(mohawk_flush_kern_cache_all) +SYM_TYPED_FUNC_START(mohawk_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -116,6 +119,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache mcrne p15, 0, ip, c7, c10, 0 @ drain write buffer ret lr +SYM_FUNC_END(mohawk_flush_kern_cache_all) /* * flush_user_cache_range(start, end, flags) @@ -129,7 +133,7 @@ __flush_whole_cache: * * (same as arm926) */ -ENTRY(mohawk_flush_user_cache_range) +SYM_TYPED_FUNC_START(mohawk_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #CACHE_DLIMIT @@ -146,6 +150,7 @@ ENTRY(mohawk_flush_user_cache_range) tst r2, #VM_EXEC mcrne p15, 0, ip, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(mohawk_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -157,8 +162,11 @@ ENTRY(mohawk_flush_user_cache_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(mohawk_coherent_kern_range) - /* FALLTHROUGH */ +SYM_TYPED_FUNC_START(mohawk_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b mohawk_coherent_user_range +#endif +SYM_FUNC_END(mohawk_coherent_kern_range) /* * coherent_user_range(start, end) @@ -172,7 +180,7 @@ ENTRY(mohawk_coherent_kern_range) * * (same as arm926) */ -ENTRY(mohawk_coherent_user_range) +SYM_TYPED_FUNC_START(mohawk_coherent_user_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ invalidate I entry @@ -182,6 +190,7 @@ ENTRY(mohawk_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ drain WB mov r0, #0 ret lr +SYM_FUNC_END(mohawk_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -192,7 +201,7 @@ ENTRY(mohawk_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(mohawk_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(mohawk_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry add r0, r0, #CACHE_DLINESIZE @@ -202,6 +211,7 @@ ENTRY(mohawk_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(mohawk_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -256,7 +266,7 @@ mohawk_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(mohawk_dma_flush_range) +SYM_TYPED_FUNC_START(mohawk_dma_flush_range) bic r0, r0, #CACHE_DLINESIZE - 1 1: mcr p15, 0, r0, c7, c14, 1 @ clean+invalidate D entry @@ -265,6 +275,7 @@ ENTRY(mohawk_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(mohawk_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -272,13 +283,13 @@ ENTRY(mohawk_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(mohawk_dma_map_area) +SYM_TYPED_FUNC_START(mohawk_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq mohawk_dma_clean_range bcs mohawk_dma_inv_range b mohawk_dma_flush_range -ENDPROC(mohawk_dma_map_area) +SYM_FUNC_END(mohawk_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -286,23 +297,18 @@ ENDPROC(mohawk_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(mohawk_dma_unmap_area) +SYM_TYPED_FUNC_START(mohawk_dma_unmap_area) ret lr -ENDPROC(mohawk_dma_unmap_area) - - .globl mohawk_flush_kern_cache_louis - .equ mohawk_flush_kern_cache_louis, mohawk_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions mohawk +SYM_FUNC_END(mohawk_dma_unmap_area) -ENTRY(cpu_mohawk_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_mohawk_dcache_clean_area) 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHE_DLINESIZE subs r1, r1, #CACHE_DLINESIZE bhi 1b mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr +SYM_FUNC_END(cpu_mohawk_dcache_clean_area) /* * cpu_mohawk_switch_mm(pgd) @@ -312,7 +318,7 @@ ENTRY(cpu_mohawk_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_mohawk_switch_mm) +SYM_TYPED_FUNC_START(cpu_mohawk_switch_mm) mov ip, #0 mcr p15, 0, ip, c7, c14, 0 @ clean & invalidate all D cache mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache @@ -321,6 +327,7 @@ ENTRY(cpu_mohawk_switch_mm) mcr p15, 0, r0, c2, c0, 0 @ load page table pointer mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs ret lr +SYM_FUNC_END(cpu_mohawk_switch_mm) /* * cpu_mohawk_set_pte_ext(ptep, pte, ext) @@ -328,7 +335,7 @@ ENTRY(cpu_mohawk_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_mohawk_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_mohawk_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext mov r0, r0 @@ -336,11 +343,12 @@ ENTRY(cpu_mohawk_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB ret lr #endif +SYM_FUNC_END(cpu_mohawk_set_pte_ext) .globl cpu_mohawk_suspend_size .equ cpu_mohawk_suspend_size, 4 * 6 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_mohawk_do_suspend) +SYM_TYPED_FUNC_START(cpu_mohawk_do_suspend) stmfd sp!, {r4 - r9, lr} mrc p14, 0, r4, c6, c0, 0 @ clock configuration, for turbo mode mrc p15, 0, r5, c15, c1, 0 @ CP access reg @@ -351,9 +359,9 @@ ENTRY(cpu_mohawk_do_suspend) bic r4, r4, #2 @ clear frequency change bit stmia r0, {r4 - r9} @ store cp regs ldmia sp!, {r4 - r9, pc} -ENDPROC(cpu_mohawk_do_suspend) +SYM_FUNC_END(cpu_mohawk_do_suspend) -ENTRY(cpu_mohawk_do_resume) +SYM_TYPED_FUNC_START(cpu_mohawk_do_resume) ldmia r0, {r4 - r9} @ load cp regs mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I & D caches, BTB @@ -369,7 +377,7 @@ ENTRY(cpu_mohawk_do_resume) mcr p15, 0, r8, c1, c0, 1 @ auxiliary control reg mov r0, r9 @ control register b cpu_resume_mmu -ENDPROC(cpu_mohawk_do_resume) +SYM_FUNC_END(cpu_mohawk_do_resume) #endif .type __mohawk_setup, #function diff --git a/arch/arm/mm/proc-sa110.S b/arch/arm/mm/proc-sa110.S index 4071f7a61cb6..3da76fab8ac3 100644 --- a/arch/arm/mm/proc-sa110.S +++ b/arch/arm/mm/proc-sa110.S @@ -12,6 +12,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -32,15 +33,16 @@ /* * cpu_sa110_proc_init() */ -ENTRY(cpu_sa110_proc_init) +SYM_TYPED_FUNC_START(cpu_sa110_proc_init) mov r0, #0 mcr p15, 0, r0, c15, c1, 2 @ Enable clock switching ret lr +SYM_FUNC_END(cpu_sa110_proc_init) /* * cpu_sa110_proc_fin() */ -ENTRY(cpu_sa110_proc_fin) +SYM_TYPED_FUNC_START(cpu_sa110_proc_fin) mov r0, #0 mcr p15, 0, r0, c15, c2, 2 @ Disable clock switching mrc p15, 0, r0, c1, c0, 0 @ ctrl register @@ -48,6 +50,7 @@ ENTRY(cpu_sa110_proc_fin) bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_sa110_proc_fin) /* * cpu_sa110_reset(loc) @@ -60,7 +63,7 @@ ENTRY(cpu_sa110_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_sa110_reset) +SYM_TYPED_FUNC_START(cpu_sa110_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -72,7 +75,7 @@ ENTRY(cpu_sa110_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_sa110_reset) +SYM_FUNC_END(cpu_sa110_reset) .popsection /* @@ -88,7 +91,7 @@ ENDPROC(cpu_sa110_reset) */ .align 5 -ENTRY(cpu_sa110_do_idle) +SYM_TYPED_FUNC_START(cpu_sa110_do_idle) mcr p15, 0, ip, c15, c2, 2 @ disable clock switching ldr r1, =UNCACHEABLE_ADDR @ load from uncacheable loc ldr r1, [r1, #0] @ force switch to MCLK @@ -101,6 +104,7 @@ ENTRY(cpu_sa110_do_idle) mov r0, r0 @ safety mcr p15, 0, r0, c15, c1, 2 @ enable clock switching ret lr +SYM_FUNC_END(cpu_sa110_do_idle) /* ================================= CACHE ================================ */ @@ -113,12 +117,13 @@ ENTRY(cpu_sa110_do_idle) * addr: cache-unaligned virtual address */ .align 5 -ENTRY(cpu_sa110_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_sa110_dcache_clean_area) 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #DCACHELINESIZE subs r1, r1, #DCACHELINESIZE bhi 1b ret lr +SYM_FUNC_END(cpu_sa110_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -130,7 +135,7 @@ ENTRY(cpu_sa110_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_sa110_switch_mm) +SYM_TYPED_FUNC_START(cpu_sa110_switch_mm) #ifdef CONFIG_MMU str lr, [sp, #-4]! bl v4wb_flush_kern_cache_all @ clears IP @@ -140,6 +145,7 @@ ENTRY(cpu_sa110_switch_mm) #else ret lr #endif +SYM_FUNC_END(cpu_sa110_switch_mm) /* * cpu_sa110_set_pte_ext(ptep, pte, ext) @@ -147,7 +153,7 @@ ENTRY(cpu_sa110_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_sa110_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_sa110_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext wc_disable=0 mov r0, r0 @@ -155,6 +161,7 @@ ENTRY(cpu_sa110_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif ret lr +SYM_FUNC_END(cpu_sa110_set_pte_ext) .type __sa110_setup, #function __sa110_setup: diff --git a/arch/arm/mm/proc-sa1100.S b/arch/arm/mm/proc-sa1100.S index e723bd4119d3..7c496195e440 100644 --- a/arch/arm/mm/proc-sa1100.S +++ b/arch/arm/mm/proc-sa1100.S @@ -17,6 +17,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> @@ -36,11 +37,12 @@ /* * cpu_sa1100_proc_init() */ -ENTRY(cpu_sa1100_proc_init) +SYM_TYPED_FUNC_START(cpu_sa1100_proc_init) mov r0, #0 mcr p15, 0, r0, c15, c1, 2 @ Enable clock switching mcr p15, 0, r0, c9, c0, 5 @ Allow read-buffer operations from userland ret lr +SYM_FUNC_END(cpu_sa1100_proc_init) /* * cpu_sa1100_proc_fin() @@ -49,13 +51,14 @@ ENTRY(cpu_sa1100_proc_init) * - Disable interrupts * - Clean and turn off caches. */ -ENTRY(cpu_sa1100_proc_fin) +SYM_TYPED_FUNC_START(cpu_sa1100_proc_fin) mcr p15, 0, ip, c15, c2, 2 @ Disable clock switching mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x000e @ ............wca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_sa1100_proc_fin) /* * cpu_sa1100_reset(loc) @@ -68,7 +71,7 @@ ENTRY(cpu_sa1100_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_sa1100_reset) +SYM_TYPED_FUNC_START(cpu_sa1100_reset) mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I,D caches mcr p15, 0, ip, c7, c10, 4 @ drain WB @@ -80,7 +83,7 @@ ENTRY(cpu_sa1100_reset) bic ip, ip, #0x1100 @ ...i...s........ mcr p15, 0, ip, c1, c0, 0 @ ctrl register ret r0 -ENDPROC(cpu_sa1100_reset) +SYM_FUNC_END(cpu_sa1100_reset) .popsection /* @@ -95,7 +98,7 @@ ENDPROC(cpu_sa1100_reset) * 3 = switch to fast processor clock */ .align 5 -ENTRY(cpu_sa1100_do_idle) +SYM_TYPED_FUNC_START(cpu_sa1100_do_idle) mov r0, r0 @ 4 nop padding mov r0, r0 mov r0, r0 @@ -111,6 +114,7 @@ ENTRY(cpu_sa1100_do_idle) mov r0, r0 @ safety mcr p15, 0, r0, c15, c1, 2 @ enable clock switching ret lr +SYM_FUNC_END(cpu_sa1100_do_idle) /* ================================= CACHE ================================ */ @@ -123,12 +127,13 @@ ENTRY(cpu_sa1100_do_idle) * addr: cache-unaligned virtual address */ .align 5 -ENTRY(cpu_sa1100_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_sa1100_dcache_clean_area) 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #DCACHELINESIZE subs r1, r1, #DCACHELINESIZE bhi 1b ret lr +SYM_FUNC_END(cpu_sa1100_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -140,7 +145,7 @@ ENTRY(cpu_sa1100_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_sa1100_switch_mm) +SYM_TYPED_FUNC_START(cpu_sa1100_switch_mm) #ifdef CONFIG_MMU str lr, [sp, #-4]! bl v4wb_flush_kern_cache_all @ clears IP @@ -151,6 +156,7 @@ ENTRY(cpu_sa1100_switch_mm) #else ret lr #endif +SYM_FUNC_END(cpu_sa1100_switch_mm) /* * cpu_sa1100_set_pte_ext(ptep, pte, ext) @@ -158,7 +164,7 @@ ENTRY(cpu_sa1100_switch_mm) * Set a PTE and flush it out */ .align 5 -ENTRY(cpu_sa1100_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_sa1100_set_pte_ext) #ifdef CONFIG_MMU armv3_set_pte_ext wc_disable=0 mov r0, r0 @@ -166,20 +172,21 @@ ENTRY(cpu_sa1100_set_pte_ext) mcr p15, 0, r0, c7, c10, 4 @ drain WB #endif ret lr +SYM_FUNC_END(cpu_sa1100_set_pte_ext) .globl cpu_sa1100_suspend_size .equ cpu_sa1100_suspend_size, 4 * 3 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_sa1100_do_suspend) +SYM_TYPED_FUNC_START(cpu_sa1100_do_suspend) stmfd sp!, {r4 - r6, lr} mrc p15, 0, r4, c3, c0, 0 @ domain ID mrc p15, 0, r5, c13, c0, 0 @ PID mrc p15, 0, r6, c1, c0, 0 @ control reg stmia r0, {r4 - r6} @ store cp regs ldmfd sp!, {r4 - r6, pc} -ENDPROC(cpu_sa1100_do_suspend) +SYM_FUNC_END(cpu_sa1100_do_suspend) -ENTRY(cpu_sa1100_do_resume) +SYM_TYPED_FUNC_START(cpu_sa1100_do_resume) ldmia r0, {r4 - r6} @ load cp regs mov ip, #0 mcr p15, 0, ip, c8, c7, 0 @ flush I+D TLBs @@ -192,7 +199,7 @@ ENTRY(cpu_sa1100_do_resume) mcr p15, 0, r5, c13, c0, 0 @ PID mov r0, r6 @ control register b cpu_resume_mmu -ENDPROC(cpu_sa1100_do_resume) +SYM_FUNC_END(cpu_sa1100_do_resume) #endif .type __sa1100_setup, #function diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S index 203dff89ab1a..90a01f5950b9 100644 --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -8,6 +8,7 @@ * This is the "shell" of the ARMv6 processor support. */ #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/linkage.h> #include <linux/pgtable.h> #include <asm/assembler.h> @@ -34,15 +35,17 @@ .arch armv6 -ENTRY(cpu_v6_proc_init) +SYM_TYPED_FUNC_START(cpu_v6_proc_init) ret lr +SYM_FUNC_END(cpu_v6_proc_init) -ENTRY(cpu_v6_proc_fin) +SYM_TYPED_FUNC_START(cpu_v6_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x0006 @ .............ca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_v6_proc_fin) /* * cpu_v6_reset(loc) @@ -55,14 +58,14 @@ ENTRY(cpu_v6_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_v6_reset) +SYM_TYPED_FUNC_START(cpu_v6_reset) mrc p15, 0, r1, c1, c0, 0 @ ctrl register bic r1, r1, #0x1 @ ...............m mcr p15, 0, r1, c1, c0, 0 @ disable MMU mov r1, #0 mcr p15, 0, r1, c7, c5, 4 @ ISB ret r0 -ENDPROC(cpu_v6_reset) +SYM_FUNC_END(cpu_v6_reset) .popsection /* @@ -72,18 +75,20 @@ ENDPROC(cpu_v6_reset) * * IRQs are already disabled. */ -ENTRY(cpu_v6_do_idle) +SYM_TYPED_FUNC_START(cpu_v6_do_idle) mov r1, #0 mcr p15, 0, r1, c7, c10, 4 @ DWB - WFI may enter a low-power mode mcr p15, 0, r1, c7, c0, 4 @ wait for interrupt ret lr +SYM_FUNC_END(cpu_v6_do_idle) -ENTRY(cpu_v6_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_v6_dcache_clean_area) 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #D_CACHE_LINE_SIZE subs r1, r1, #D_CACHE_LINE_SIZE bhi 1b ret lr +SYM_FUNC_END(cpu_v6_dcache_clean_area) /* * cpu_v6_switch_mm(pgd_phys, tsk) @@ -95,7 +100,7 @@ ENTRY(cpu_v6_dcache_clean_area) * It is assumed that: * - we are not using split page tables */ -ENTRY(cpu_v6_switch_mm) +SYM_TYPED_FUNC_START(cpu_v6_switch_mm) #ifdef CONFIG_MMU mov r2, #0 mmid r1, r1 @ get mm->context.id @@ -113,6 +118,7 @@ ENTRY(cpu_v6_switch_mm) mcr p15, 0, r1, c13, c0, 1 @ set context ID #endif ret lr +SYM_FUNC_END(cpu_v6_switch_mm) /* * cpu_v6_set_pte_ext(ptep, pte, ext) @@ -126,17 +132,18 @@ ENTRY(cpu_v6_switch_mm) */ armv6_mt_table cpu_v6 -ENTRY(cpu_v6_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_v6_set_pte_ext) #ifdef CONFIG_MMU armv6_set_pte_ext cpu_v6 #endif ret lr +SYM_FUNC_END(cpu_v6_set_pte_ext) /* Suspend/resume support: taken from arch/arm/mach-s3c64xx/sleep.S */ .globl cpu_v6_suspend_size .equ cpu_v6_suspend_size, 4 * 6 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_v6_do_suspend) +SYM_TYPED_FUNC_START(cpu_v6_do_suspend) stmfd sp!, {r4 - r9, lr} mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID #ifdef CONFIG_MMU @@ -148,9 +155,9 @@ ENTRY(cpu_v6_do_suspend) mrc p15, 0, r9, c1, c0, 0 @ control register stmia r0, {r4 - r9} ldmfd sp!, {r4- r9, pc} -ENDPROC(cpu_v6_do_suspend) +SYM_FUNC_END(cpu_v6_do_suspend) -ENTRY(cpu_v6_do_resume) +SYM_TYPED_FUNC_START(cpu_v6_do_resume) mov ip, #0 mcr p15, 0, ip, c7, c14, 0 @ clean+invalidate D cache mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache @@ -172,7 +179,7 @@ ENTRY(cpu_v6_do_resume) mcr p15, 0, ip, c7, c5, 4 @ ISB mov r0, r9 @ control register b cpu_resume_mmu -ENDPROC(cpu_v6_do_resume) +SYM_FUNC_END(cpu_v6_do_resume) #endif string cpu_v6_name, "ARMv6-compatible processor" diff --git a/arch/arm/mm/proc-v7-2level.S b/arch/arm/mm/proc-v7-2level.S index 0a3083ad19c2..1007702fcaf3 100644 --- a/arch/arm/mm/proc-v7-2level.S +++ b/arch/arm/mm/proc-v7-2level.S @@ -40,7 +40,7 @@ * even on Cortex-A8 revisions not affected by 430973. * If IBE is not set, the flush BTAC/BTB won't do anything. */ -ENTRY(cpu_v7_switch_mm) +SYM_TYPED_FUNC_START(cpu_v7_switch_mm) #ifdef CONFIG_MMU mmid r1, r1 @ get mm->context.id ALT_SMP(orr r0, r0, #TTB_FLAGS_SMP) @@ -59,7 +59,7 @@ ENTRY(cpu_v7_switch_mm) isb #endif bx lr -ENDPROC(cpu_v7_switch_mm) +SYM_FUNC_END(cpu_v7_switch_mm) /* * cpu_v7_set_pte_ext(ptep, pte) @@ -71,7 +71,7 @@ ENDPROC(cpu_v7_switch_mm) * - pte - PTE value to store * - ext - value for extended PTE bits */ -ENTRY(cpu_v7_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_v7_set_pte_ext) #ifdef CONFIG_MMU str r1, [r0] @ linux version @@ -106,7 +106,7 @@ ENTRY(cpu_v7_set_pte_ext) ALT_UP (mcr p15, 0, r0, c7, c10, 1) @ flush_pte #endif bx lr -ENDPROC(cpu_v7_set_pte_ext) +SYM_FUNC_END(cpu_v7_set_pte_ext) /* * Memory region attributes with SCTLR.TRE=1 diff --git a/arch/arm/mm/proc-v7-3level.S b/arch/arm/mm/proc-v7-3level.S index 131984462d0d..bdabc15cde56 100644 --- a/arch/arm/mm/proc-v7-3level.S +++ b/arch/arm/mm/proc-v7-3level.S @@ -42,7 +42,7 @@ * Set the translation table base pointer to be pgd_phys (physical address of * the new TTB). */ -ENTRY(cpu_v7_switch_mm) +SYM_TYPED_FUNC_START(cpu_v7_switch_mm) #ifdef CONFIG_MMU mmid r2, r2 asid r2, r2 @@ -51,7 +51,7 @@ ENTRY(cpu_v7_switch_mm) isb #endif ret lr -ENDPROC(cpu_v7_switch_mm) +SYM_FUNC_END(cpu_v7_switch_mm) #ifdef __ARMEB__ #define rl r3 @@ -68,7 +68,7 @@ ENDPROC(cpu_v7_switch_mm) * - ptep - pointer to level 3 translation table entry * - pte - PTE value to store (64-bit in r2 and r3) */ -ENTRY(cpu_v7_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_v7_set_pte_ext) #ifdef CONFIG_MMU tst rl, #L_PTE_VALID beq 1f @@ -87,7 +87,7 @@ ENTRY(cpu_v7_set_pte_ext) ALT_UP (mcr p15, 0, r0, c7, c10, 1) @ flush_pte #endif ret lr -ENDPROC(cpu_v7_set_pte_ext) +SYM_FUNC_END(cpu_v7_set_pte_ext) /* * Memory region attributes for LPAE (defined in pgtable-3level.h): diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 193c7aeb6703..5fb9a6aecb00 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -7,6 +7,7 @@ * This is the "shell" of the ARMv7 processor support. */ #include <linux/arm-smccc.h> +#include <linux/cfi_types.h> #include <linux/init.h> #include <linux/linkage.h> #include <linux/pgtable.h> @@ -26,17 +27,17 @@ .arch armv7-a -ENTRY(cpu_v7_proc_init) +SYM_TYPED_FUNC_START(cpu_v7_proc_init) ret lr -ENDPROC(cpu_v7_proc_init) +SYM_FUNC_END(cpu_v7_proc_init) -ENTRY(cpu_v7_proc_fin) +SYM_TYPED_FUNC_START(cpu_v7_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1000 @ ...i............ bic r0, r0, #0x0006 @ .............ca. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr -ENDPROC(cpu_v7_proc_fin) +SYM_FUNC_END(cpu_v7_proc_fin) /* * cpu_v7_reset(loc, hyp) @@ -53,7 +54,7 @@ ENDPROC(cpu_v7_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_v7_reset) +SYM_TYPED_FUNC_START(cpu_v7_reset) mrc p15, 0, r2, c1, c0, 0 @ ctrl register bic r2, r2, #0x1 @ ...............m THUMB( bic r2, r2, #1 << 30 ) @ SCTLR.TE (Thumb exceptions) @@ -64,7 +65,7 @@ ENTRY(cpu_v7_reset) bne __hyp_soft_restart #endif bx r0 -ENDPROC(cpu_v7_reset) +SYM_FUNC_END(cpu_v7_reset) .popsection /* @@ -74,13 +75,13 @@ ENDPROC(cpu_v7_reset) * * IRQs are already disabled. */ -ENTRY(cpu_v7_do_idle) +SYM_TYPED_FUNC_START(cpu_v7_do_idle) dsb @ WFI may enter a low-power mode wfi ret lr -ENDPROC(cpu_v7_do_idle) +SYM_FUNC_END(cpu_v7_do_idle) -ENTRY(cpu_v7_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_v7_dcache_clean_area) ALT_SMP(W(nop)) @ MP extensions imply L1 PTW ALT_UP_B(1f) ret lr @@ -91,38 +92,39 @@ ENTRY(cpu_v7_dcache_clean_area) bhi 2b dsb ishst ret lr -ENDPROC(cpu_v7_dcache_clean_area) +SYM_FUNC_END(cpu_v7_dcache_clean_area) #ifdef CONFIG_ARM_PSCI .arch_extension sec -ENTRY(cpu_v7_smc_switch_mm) +SYM_TYPED_FUNC_START(cpu_v7_smc_switch_mm) stmfd sp!, {r0 - r3} movw r0, #:lower16:ARM_SMCCC_ARCH_WORKAROUND_1 movt r0, #:upper16:ARM_SMCCC_ARCH_WORKAROUND_1 smc #0 ldmfd sp!, {r0 - r3} b cpu_v7_switch_mm -ENDPROC(cpu_v7_smc_switch_mm) +SYM_FUNC_END(cpu_v7_smc_switch_mm) .arch_extension virt -ENTRY(cpu_v7_hvc_switch_mm) +SYM_TYPED_FUNC_START(cpu_v7_hvc_switch_mm) stmfd sp!, {r0 - r3} movw r0, #:lower16:ARM_SMCCC_ARCH_WORKAROUND_1 movt r0, #:upper16:ARM_SMCCC_ARCH_WORKAROUND_1 hvc #0 ldmfd sp!, {r0 - r3} b cpu_v7_switch_mm -ENDPROC(cpu_v7_hvc_switch_mm) +SYM_FUNC_END(cpu_v7_hvc_switch_mm) #endif -ENTRY(cpu_v7_iciallu_switch_mm) + +SYM_TYPED_FUNC_START(cpu_v7_iciallu_switch_mm) mov r3, #0 mcr p15, 0, r3, c7, c5, 0 @ ICIALLU b cpu_v7_switch_mm -ENDPROC(cpu_v7_iciallu_switch_mm) -ENTRY(cpu_v7_bpiall_switch_mm) +SYM_FUNC_END(cpu_v7_iciallu_switch_mm) +SYM_TYPED_FUNC_START(cpu_v7_bpiall_switch_mm) mov r3, #0 mcr p15, 0, r3, c7, c5, 6 @ flush BTAC/BTB b cpu_v7_switch_mm -ENDPROC(cpu_v7_bpiall_switch_mm) +SYM_FUNC_END(cpu_v7_bpiall_switch_mm) string cpu_v7_name, "ARMv7 Processor" .align @@ -131,7 +133,7 @@ ENDPROC(cpu_v7_bpiall_switch_mm) .globl cpu_v7_suspend_size .equ cpu_v7_suspend_size, 4 * 9 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_v7_do_suspend) +SYM_TYPED_FUNC_START(cpu_v7_do_suspend) stmfd sp!, {r4 - r11, lr} mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID mrc p15, 0, r5, c13, c0, 3 @ User r/o thread ID @@ -150,9 +152,9 @@ ENTRY(cpu_v7_do_suspend) mrc p15, 0, r10, c1, c0, 2 @ Co-processor access control stmia r0, {r5 - r11} ldmfd sp!, {r4 - r11, pc} -ENDPROC(cpu_v7_do_suspend) +SYM_FUNC_END(cpu_v7_do_suspend) -ENTRY(cpu_v7_do_resume) +SYM_TYPED_FUNC_START(cpu_v7_do_resume) mov ip, #0 mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache mcr p15, 0, ip, c13, c0, 1 @ set reserved context ID @@ -186,22 +188,22 @@ ENTRY(cpu_v7_do_resume) dsb mov r0, r8 @ control register b cpu_resume_mmu -ENDPROC(cpu_v7_do_resume) +SYM_FUNC_END(cpu_v7_do_resume) #endif .globl cpu_ca9mp_suspend_size .equ cpu_ca9mp_suspend_size, cpu_v7_suspend_size + 4 * 2 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_ca9mp_do_suspend) +SYM_TYPED_FUNC_START(cpu_ca9mp_do_suspend) stmfd sp!, {r4 - r5} mrc p15, 0, r4, c15, c0, 1 @ Diagnostic register mrc p15, 0, r5, c15, c0, 0 @ Power register stmia r0!, {r4 - r5} ldmfd sp!, {r4 - r5} b cpu_v7_do_suspend -ENDPROC(cpu_ca9mp_do_suspend) +SYM_FUNC_END(cpu_ca9mp_do_suspend) -ENTRY(cpu_ca9mp_do_resume) +SYM_TYPED_FUNC_START(cpu_ca9mp_do_resume) ldmia r0!, {r4 - r5} mrc p15, 0, r10, c15, c0, 1 @ Read Diagnostic register teq r4, r10 @ Already restored? @@ -210,7 +212,7 @@ ENTRY(cpu_ca9mp_do_resume) teq r5, r10 @ Already restored? mcrne p15, 0, r5, c15, c0, 0 @ No, so restore it b cpu_v7_do_resume -ENDPROC(cpu_ca9mp_do_resume) +SYM_FUNC_END(cpu_ca9mp_do_resume) #endif #ifdef CONFIG_CPU_PJ4B @@ -220,18 +222,18 @@ ENDPROC(cpu_ca9mp_do_resume) globl_equ cpu_pj4b_proc_fin, cpu_v7_proc_fin globl_equ cpu_pj4b_reset, cpu_v7_reset #ifdef CONFIG_PJ4B_ERRATA_4742 -ENTRY(cpu_pj4b_do_idle) +SYM_TYPED_FUNC_START(cpu_pj4b_do_idle) dsb @ WFI may enter a low-power mode wfi dsb @barrier ret lr -ENDPROC(cpu_pj4b_do_idle) +SYM_FUNC_END(cpu_pj4b_do_idle) #else globl_equ cpu_pj4b_do_idle, cpu_v7_do_idle #endif globl_equ cpu_pj4b_dcache_clean_area, cpu_v7_dcache_clean_area #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_pj4b_do_suspend) +SYM_TYPED_FUNC_START(cpu_pj4b_do_suspend) stmfd sp!, {r6 - r10} mrc p15, 1, r6, c15, c1, 0 @ save CP15 - extra features mrc p15, 1, r7, c15, c2, 0 @ save CP15 - Aux Func Modes Ctrl 0 @@ -241,9 +243,9 @@ ENTRY(cpu_pj4b_do_suspend) stmia r0!, {r6 - r10} ldmfd sp!, {r6 - r10} b cpu_v7_do_suspend -ENDPROC(cpu_pj4b_do_suspend) +SYM_FUNC_END(cpu_pj4b_do_suspend) -ENTRY(cpu_pj4b_do_resume) +SYM_TYPED_FUNC_START(cpu_pj4b_do_resume) ldmia r0!, {r6 - r10} mcr p15, 1, r6, c15, c1, 0 @ restore CP15 - extra features mcr p15, 1, r7, c15, c2, 0 @ restore CP15 - Aux Func Modes Ctrl 0 @@ -251,7 +253,7 @@ ENTRY(cpu_pj4b_do_resume) mcr p15, 1, r9, c15, c1, 1 @ restore CP15 - Aux Debug Modes Ctrl 1 mcr p15, 0, r10, c9, c14, 0 @ restore CP15 - PMC b cpu_v7_do_resume -ENDPROC(cpu_pj4b_do_resume) +SYM_FUNC_END(cpu_pj4b_do_resume) #endif .globl cpu_pj4b_suspend_size .equ cpu_pj4b_suspend_size, cpu_v7_suspend_size + 4 * 5 diff --git a/arch/arm/mm/proc-v7m.S b/arch/arm/mm/proc-v7m.S index d65a12f851a9..d4675603593b 100644 --- a/arch/arm/mm/proc-v7m.S +++ b/arch/arm/mm/proc-v7m.S @@ -8,18 +8,19 @@ * This is the "shell" of the ARMv7-M processor support. */ #include <linux/linkage.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/page.h> #include <asm/v7m.h> #include "proc-macros.S" -ENTRY(cpu_v7m_proc_init) +SYM_TYPED_FUNC_START(cpu_v7m_proc_init) ret lr -ENDPROC(cpu_v7m_proc_init) +SYM_FUNC_END(cpu_v7m_proc_init) -ENTRY(cpu_v7m_proc_fin) +SYM_TYPED_FUNC_START(cpu_v7m_proc_fin) ret lr -ENDPROC(cpu_v7m_proc_fin) +SYM_FUNC_END(cpu_v7m_proc_fin) /* * cpu_v7m_reset(loc) @@ -31,9 +32,9 @@ ENDPROC(cpu_v7m_proc_fin) * - loc - location to jump to for soft reset */ .align 5 -ENTRY(cpu_v7m_reset) +SYM_TYPED_FUNC_START(cpu_v7m_reset) ret r0 -ENDPROC(cpu_v7m_reset) +SYM_FUNC_END(cpu_v7m_reset) /* * cpu_v7m_do_idle() @@ -42,36 +43,36 @@ ENDPROC(cpu_v7m_reset) * * IRQs are already disabled. */ -ENTRY(cpu_v7m_do_idle) +SYM_TYPED_FUNC_START(cpu_v7m_do_idle) wfi ret lr -ENDPROC(cpu_v7m_do_idle) +SYM_FUNC_END(cpu_v7m_do_idle) -ENTRY(cpu_v7m_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_v7m_dcache_clean_area) ret lr -ENDPROC(cpu_v7m_dcache_clean_area) +SYM_FUNC_END(cpu_v7m_dcache_clean_area) /* * There is no MMU, so here is nothing to do. */ -ENTRY(cpu_v7m_switch_mm) +SYM_TYPED_FUNC_START(cpu_v7m_switch_mm) ret lr -ENDPROC(cpu_v7m_switch_mm) +SYM_FUNC_END(cpu_v7m_switch_mm) .globl cpu_v7m_suspend_size .equ cpu_v7m_suspend_size, 0 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_v7m_do_suspend) +SYM_TYPED_FUNC_START(cpu_v7m_do_suspend) ret lr -ENDPROC(cpu_v7m_do_suspend) +SYM_FUNC_END(cpu_v7m_do_suspend) -ENTRY(cpu_v7m_do_resume) +SYM_TYPED_FUNC_START(cpu_v7m_do_resume) ret lr -ENDPROC(cpu_v7m_do_resume) +SYM_FUNC_END(cpu_v7m_do_resume) #endif -ENTRY(cpu_cm7_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_cm7_dcache_clean_area) dcache_line_size r2, r3 movw r3, #:lower16:BASEADDR_V7M_SCB + V7M_SCB_DCCMVAC movt r3, #:upper16:BASEADDR_V7M_SCB + V7M_SCB_DCCMVAC @@ -82,16 +83,16 @@ ENTRY(cpu_cm7_dcache_clean_area) bhi 1b dsb ret lr -ENDPROC(cpu_cm7_dcache_clean_area) +SYM_FUNC_END(cpu_cm7_dcache_clean_area) -ENTRY(cpu_cm7_proc_fin) +SYM_TYPED_FUNC_START(cpu_cm7_proc_fin) movw r2, #:lower16:(BASEADDR_V7M_SCB + V7M_SCB_CCR) movt r2, #:upper16:(BASEADDR_V7M_SCB + V7M_SCB_CCR) ldr r0, [r2] bic r0, r0, #(V7M_SCB_CCR_DC | V7M_SCB_CCR_IC) str r0, [r2] ret lr -ENDPROC(cpu_cm7_proc_fin) +SYM_FUNC_END(cpu_cm7_proc_fin) .section ".init.text", "ax" diff --git a/arch/arm/mm/proc-xsc3.S b/arch/arm/mm/proc-xsc3.S index a17afe7e195a..14927b380452 100644 --- a/arch/arm/mm/proc-xsc3.S +++ b/arch/arm/mm/proc-xsc3.S @@ -23,6 +23,7 @@ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -79,18 +80,20 @@ * * Nothing too exciting at the moment */ -ENTRY(cpu_xsc3_proc_init) +SYM_TYPED_FUNC_START(cpu_xsc3_proc_init) ret lr +SYM_FUNC_END(cpu_xsc3_proc_init) /* * cpu_xsc3_proc_fin() */ -ENTRY(cpu_xsc3_proc_fin) +SYM_TYPED_FUNC_START(cpu_xsc3_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1800 @ ...IZ........... bic r0, r0, #0x0006 @ .............CA. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_xsc3_proc_fin) /* * cpu_xsc3_reset(loc) @@ -103,7 +106,7 @@ ENTRY(cpu_xsc3_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_xsc3_reset) +SYM_TYPED_FUNC_START(cpu_xsc3_reset) mov r1, #PSR_F_BIT|PSR_I_BIT|SVC_MODE msr cpsr_c, r1 @ reset CPSR mrc p15, 0, r1, c1, c0, 0 @ ctrl register @@ -117,7 +120,7 @@ ENTRY(cpu_xsc3_reset) @ already containing those two last instructions to survive. mcr p15, 0, ip, c8, c7, 0 @ invalidate I and D TLBs ret r0 -ENDPROC(cpu_xsc3_reset) +SYM_FUNC_END(cpu_xsc3_reset) .popsection /* @@ -132,10 +135,11 @@ ENDPROC(cpu_xsc3_reset) */ .align 5 -ENTRY(cpu_xsc3_do_idle) +SYM_TYPED_FUNC_START(cpu_xsc3_do_idle) mov r0, #1 mcr p14, 0, r0, c7, c0, 0 @ go to idle ret lr +SYM_FUNC_END(cpu_xsc3_do_idle) /* ================================= CACHE ================================ */ @@ -144,11 +148,11 @@ ENTRY(cpu_xsc3_do_idle) * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(xsc3_flush_icache_all) +SYM_TYPED_FUNC_START(xsc3_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(xsc3_flush_icache_all) +SYM_FUNC_END(xsc3_flush_icache_all) /* * flush_user_cache_all() @@ -156,15 +160,14 @@ ENDPROC(xsc3_flush_icache_all) * Invalidate all cache entries in a particular address * space. */ -ENTRY(xsc3_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(xsc3_flush_user_cache_all, xsc3_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(xsc3_flush_kern_cache_all) +SYM_TYPED_FUNC_START(xsc3_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -174,6 +177,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c10, 4 @ data write barrier mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush ret lr +SYM_FUNC_END(xsc3_flush_kern_cache_all) /* * flush_user_cache_range(start, end, vm_flags) @@ -186,7 +190,7 @@ __flush_whole_cache: * - vma - vma_area_struct describing address space */ .align 5 -ENTRY(xsc3_flush_user_cache_range) +SYM_TYPED_FUNC_START(xsc3_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #MAX_AREA_SIZE @@ -203,6 +207,7 @@ ENTRY(xsc3_flush_user_cache_range) mcrne p15, 0, ip, c7, c10, 4 @ data write barrier mcrne p15, 0, ip, c7, c5, 4 @ prefetch flush ret lr +SYM_FUNC_END(xsc3_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -217,9 +222,13 @@ ENTRY(xsc3_flush_user_cache_range) * Note: single I-cache line invalidation isn't used here since * it also trashes the mini I-cache used by JTAG debuggers. */ -ENTRY(xsc3_coherent_kern_range) -/* FALLTHROUGH */ -ENTRY(xsc3_coherent_user_range) +SYM_TYPED_FUNC_START(xsc3_coherent_kern_range) +#ifdef CONFIG_CFI_CLANG /* Fallthrough if !CFI */ + b xsc3_coherent_user_range +#endif +SYM_FUNC_END(xsc3_coherent_kern_range) + +SYM_TYPED_FUNC_START(xsc3_coherent_user_range) bic r0, r0, #CACHELINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean L1 D line add r0, r0, #CACHELINESIZE @@ -230,6 +239,7 @@ ENTRY(xsc3_coherent_user_range) mcr p15, 0, r0, c7, c10, 4 @ data write barrier mcr p15, 0, r0, c7, c5, 4 @ prefetch flush ret lr +SYM_FUNC_END(xsc3_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -240,7 +250,7 @@ ENTRY(xsc3_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(xsc3_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(xsc3_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c14, 1 @ clean/invalidate L1 D line add r0, r0, #CACHELINESIZE @@ -251,6 +261,7 @@ ENTRY(xsc3_flush_kern_dcache_area) mcr p15, 0, r0, c7, c10, 4 @ data write barrier mcr p15, 0, r0, c7, c5, 4 @ prefetch flush ret lr +SYM_FUNC_END(xsc3_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -301,7 +312,7 @@ xsc3_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(xsc3_dma_flush_range) +SYM_TYPED_FUNC_START(xsc3_dma_flush_range) bic r0, r0, #CACHELINESIZE - 1 1: mcr p15, 0, r0, c7, c14, 1 @ clean/invalidate L1 D line add r0, r0, #CACHELINESIZE @@ -309,6 +320,7 @@ ENTRY(xsc3_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ data write barrier ret lr +SYM_FUNC_END(xsc3_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -316,13 +328,13 @@ ENTRY(xsc3_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(xsc3_dma_map_area) +SYM_TYPED_FUNC_START(xsc3_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq xsc3_dma_clean_range bcs xsc3_dma_inv_range b xsc3_dma_flush_range -ENDPROC(xsc3_dma_map_area) +SYM_FUNC_END(xsc3_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -330,22 +342,17 @@ ENDPROC(xsc3_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(xsc3_dma_unmap_area) +SYM_TYPED_FUNC_START(xsc3_dma_unmap_area) ret lr -ENDPROC(xsc3_dma_unmap_area) - - .globl xsc3_flush_kern_cache_louis - .equ xsc3_flush_kern_cache_louis, xsc3_flush_kern_cache_all - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions xsc3 +SYM_FUNC_END(xsc3_dma_unmap_area) -ENTRY(cpu_xsc3_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_xsc3_dcache_clean_area) 1: mcr p15, 0, r0, c7, c10, 1 @ clean L1 D line add r0, r0, #CACHELINESIZE subs r1, r1, #CACHELINESIZE bhi 1b ret lr +SYM_FUNC_END(cpu_xsc3_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -357,7 +364,7 @@ ENTRY(cpu_xsc3_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_xsc3_switch_mm) +SYM_TYPED_FUNC_START(cpu_xsc3_switch_mm) clean_d_cache r1, r2 mcr p15, 0, ip, c7, c5, 0 @ invalidate L1 I cache and BTB mcr p15, 0, ip, c7, c10, 4 @ data write barrier @@ -366,6 +373,7 @@ ENTRY(cpu_xsc3_switch_mm) mcr p15, 0, r0, c2, c0, 0 @ load page table pointer mcr p15, 0, ip, c8, c7, 0 @ invalidate I and D TLBs cpwait_ret lr, ip +SYM_FUNC_END(cpu_xsc3_switch_mm) /* * cpu_xsc3_set_pte_ext(ptep, pte, ext) @@ -391,7 +399,7 @@ cpu_xsc3_mt_table: .long 0x00 @ unused .align 5 -ENTRY(cpu_xsc3_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_xsc3_set_pte_ext) xscale_set_pte_ext_prologue tst r1, #L_PTE_SHARED @ shared? @@ -404,6 +412,7 @@ ENTRY(cpu_xsc3_set_pte_ext) xscale_set_pte_ext_epilogue ret lr +SYM_FUNC_END(cpu_xsc3_set_pte_ext) .ltorg .align @@ -411,7 +420,7 @@ ENTRY(cpu_xsc3_set_pte_ext) .globl cpu_xsc3_suspend_size .equ cpu_xsc3_suspend_size, 4 * 6 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_xsc3_do_suspend) +SYM_TYPED_FUNC_START(cpu_xsc3_do_suspend) stmfd sp!, {r4 - r9, lr} mrc p14, 0, r4, c6, c0, 0 @ clock configuration, for turbo mode mrc p15, 0, r5, c15, c1, 0 @ CP access reg @@ -422,9 +431,9 @@ ENTRY(cpu_xsc3_do_suspend) bic r4, r4, #2 @ clear frequency change bit stmia r0, {r4 - r9} @ store cp regs ldmia sp!, {r4 - r9, pc} -ENDPROC(cpu_xsc3_do_suspend) +SYM_FUNC_END(cpu_xsc3_do_suspend) -ENTRY(cpu_xsc3_do_resume) +SYM_TYPED_FUNC_START(cpu_xsc3_do_resume) ldmia r0, {r4 - r9} @ load cp regs mov ip, #0 mcr p15, 0, ip, c7, c7, 0 @ invalidate I & D caches, BTB @@ -440,7 +449,7 @@ ENTRY(cpu_xsc3_do_resume) mcr p15, 0, r8, c1, c0, 1 @ auxiliary control reg mov r0, r9 @ control register b cpu_resume_mmu -ENDPROC(cpu_xsc3_do_resume) +SYM_FUNC_END(cpu_xsc3_do_resume) #endif .type __xsc3_setup, #function diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S index d82590aa71c0..d8462df8020b 100644 --- a/arch/arm/mm/proc-xscale.S +++ b/arch/arm/mm/proc-xscale.S @@ -19,6 +19,7 @@ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <linux/pgtable.h> #include <asm/assembler.h> #include <asm/hwcap.h> @@ -111,22 +112,24 @@ clean_addr: .word CLEAN_ADDR * * Nothing too exciting at the moment */ -ENTRY(cpu_xscale_proc_init) +SYM_TYPED_FUNC_START(cpu_xscale_proc_init) @ enable write buffer coalescing. Some bootloader disable it mrc p15, 0, r1, c1, c0, 1 bic r1, r1, #1 mcr p15, 0, r1, c1, c0, 1 ret lr +SYM_FUNC_END(cpu_xscale_proc_init) /* * cpu_xscale_proc_fin() */ -ENTRY(cpu_xscale_proc_fin) +SYM_TYPED_FUNC_START(cpu_xscale_proc_fin) mrc p15, 0, r0, c1, c0, 0 @ ctrl register bic r0, r0, #0x1800 @ ...IZ........... bic r0, r0, #0x0006 @ .............CA. mcr p15, 0, r0, c1, c0, 0 @ disable caches ret lr +SYM_FUNC_END(cpu_xscale_proc_fin) /* * cpu_xscale_reset(loc) @@ -141,7 +144,7 @@ ENTRY(cpu_xscale_proc_fin) */ .align 5 .pushsection .idmap.text, "ax" -ENTRY(cpu_xscale_reset) +SYM_TYPED_FUNC_START(cpu_xscale_reset) mov r1, #PSR_F_BIT|PSR_I_BIT|SVC_MODE msr cpsr_c, r1 @ reset CPSR mcr p15, 0, r1, c10, c4, 1 @ unlock I-TLB @@ -159,7 +162,7 @@ ENTRY(cpu_xscale_reset) @ already containing those two last instructions to survive. mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs ret r0 -ENDPROC(cpu_xscale_reset) +SYM_FUNC_END(cpu_xscale_reset) .popsection /* @@ -174,10 +177,11 @@ ENDPROC(cpu_xscale_reset) */ .align 5 -ENTRY(cpu_xscale_do_idle) +SYM_TYPED_FUNC_START(cpu_xscale_do_idle) mov r0, #1 mcr p14, 0, r0, c7, c0, 0 @ Go to IDLE ret lr +SYM_FUNC_END(cpu_xscale_do_idle) /* ================================= CACHE ================================ */ @@ -186,11 +190,11 @@ ENTRY(cpu_xscale_do_idle) * * Unconditionally clean and invalidate the entire icache. */ -ENTRY(xscale_flush_icache_all) +SYM_TYPED_FUNC_START(xscale_flush_icache_all) mov r0, #0 mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache ret lr -ENDPROC(xscale_flush_icache_all) +SYM_FUNC_END(xscale_flush_icache_all) /* * flush_user_cache_all() @@ -198,15 +202,14 @@ ENDPROC(xscale_flush_icache_all) * Invalidate all cache entries in a particular address * space. */ -ENTRY(xscale_flush_user_cache_all) - /* FALLTHROUGH */ +SYM_FUNC_ALIAS(xscale_flush_user_cache_all, xscale_flush_kern_cache_all) /* * flush_kern_cache_all() * * Clean and invalidate the entire cache. */ -ENTRY(xscale_flush_kern_cache_all) +SYM_TYPED_FUNC_START(xscale_flush_kern_cache_all) mov r2, #VM_EXEC mov ip, #0 __flush_whole_cache: @@ -215,6 +218,7 @@ __flush_whole_cache: mcrne p15, 0, ip, c7, c5, 0 @ Invalidate I cache & BTB mcrne p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_flush_kern_cache_all) /* * flush_user_cache_range(start, end, vm_flags) @@ -227,7 +231,7 @@ __flush_whole_cache: * - vma - vma_area_struct describing address space */ .align 5 -ENTRY(xscale_flush_user_cache_range) +SYM_TYPED_FUNC_START(xscale_flush_user_cache_range) mov ip, #0 sub r3, r1, r0 @ calculate total size cmp r3, #MAX_AREA_SIZE @@ -244,6 +248,7 @@ ENTRY(xscale_flush_user_cache_range) mcrne p15, 0, ip, c7, c5, 6 @ Invalidate BTB mcrne p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_flush_user_cache_range) /* * coherent_kern_range(start, end) @@ -258,7 +263,7 @@ ENTRY(xscale_flush_user_cache_range) * Note: single I-cache line invalidation isn't used here since * it also trashes the mini I-cache used by JTAG debuggers. */ -ENTRY(xscale_coherent_kern_range) +SYM_TYPED_FUNC_START(xscale_coherent_kern_range) bic r0, r0, #CACHELINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHELINESIZE @@ -268,6 +273,7 @@ ENTRY(xscale_coherent_kern_range) mcr p15, 0, r0, c7, c5, 0 @ Invalidate I cache & BTB mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_coherent_kern_range) /* * coherent_user_range(start, end) @@ -279,7 +285,7 @@ ENTRY(xscale_coherent_kern_range) * - start - virtual start address * - end - virtual end address */ -ENTRY(xscale_coherent_user_range) +SYM_TYPED_FUNC_START(xscale_coherent_user_range) bic r0, r0, #CACHELINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c5, 1 @ Invalidate I cache entry @@ -290,6 +296,7 @@ ENTRY(xscale_coherent_user_range) mcr p15, 0, r0, c7, c5, 6 @ Invalidate BTB mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_coherent_user_range) /* * flush_kern_dcache_area(void *addr, size_t size) @@ -300,7 +307,7 @@ ENTRY(xscale_coherent_user_range) * - addr - kernel address * - size - region size */ -ENTRY(xscale_flush_kern_dcache_area) +SYM_TYPED_FUNC_START(xscale_flush_kern_dcache_area) add r1, r0, r1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry @@ -311,6 +318,7 @@ ENTRY(xscale_flush_kern_dcache_area) mcr p15, 0, r0, c7, c5, 0 @ Invalidate I cache & BTB mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_flush_kern_dcache_area) /* * dma_inv_range(start, end) @@ -361,7 +369,7 @@ xscale_dma_clean_range: * - start - virtual start address * - end - virtual end address */ -ENTRY(xscale_dma_flush_range) +SYM_TYPED_FUNC_START(xscale_dma_flush_range) bic r0, r0, #CACHELINESIZE - 1 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry @@ -370,6 +378,7 @@ ENTRY(xscale_dma_flush_range) blo 1b mcr p15, 0, r0, c7, c10, 4 @ Drain Write (& Fill) Buffer ret lr +SYM_FUNC_END(xscale_dma_flush_range) /* * dma_map_area(start, size, dir) @@ -377,13 +386,27 @@ ENTRY(xscale_dma_flush_range) * - size - size of region * - dir - DMA direction */ -ENTRY(xscale_dma_map_area) +SYM_TYPED_FUNC_START(xscale_dma_map_area) add r1, r1, r0 cmp r2, #DMA_TO_DEVICE beq xscale_dma_clean_range bcs xscale_dma_inv_range b xscale_dma_flush_range -ENDPROC(xscale_dma_map_area) +SYM_FUNC_END(xscale_dma_map_area) + +/* + * On stepping A0/A1 of the 80200, invalidating D-cache by line doesn't + * clear the dirty bits, which means that if we invalidate a dirty line, + * the dirty data can still be written back to external memory later on. + * + * The recommended workaround is to always do a clean D-cache line before + * doing an invalidate D-cache line, so on the affected processors, + * dma_inv_range() is implemented as dma_flush_range(). + * + * See erratum #25 of "Intel 80200 Processor Specification Update", + * revision January 22, 2003, available at: + * http://www.intel.com/design/iio/specupdt/273415.htm + */ /* * dma_map_area(start, size, dir) @@ -391,12 +414,12 @@ ENDPROC(xscale_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(xscale_80200_A0_A1_dma_map_area) +SYM_TYPED_FUNC_START(xscale_80200_A0_A1_dma_map_area) add r1, r1, r0 teq r2, #DMA_TO_DEVICE beq xscale_dma_clean_range b xscale_dma_flush_range -ENDPROC(xscale_80200_A0_A1_dma_map_area) +SYM_FUNC_END(xscale_80200_A0_A1_dma_map_area) /* * dma_unmap_area(start, size, dir) @@ -404,59 +427,17 @@ ENDPROC(xscale_80200_A0_A1_dma_map_area) * - size - size of region * - dir - DMA direction */ -ENTRY(xscale_dma_unmap_area) +SYM_TYPED_FUNC_START(xscale_dma_unmap_area) ret lr -ENDPROC(xscale_dma_unmap_area) - - .globl xscale_flush_kern_cache_louis - .equ xscale_flush_kern_cache_louis, xscale_flush_kern_cache_all +SYM_FUNC_END(xscale_dma_unmap_area) - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions xscale - -/* - * On stepping A0/A1 of the 80200, invalidating D-cache by line doesn't - * clear the dirty bits, which means that if we invalidate a dirty line, - * the dirty data can still be written back to external memory later on. - * - * The recommended workaround is to always do a clean D-cache line before - * doing an invalidate D-cache line, so on the affected processors, - * dma_inv_range() is implemented as dma_flush_range(). - * - * See erratum #25 of "Intel 80200 Processor Specification Update", - * revision January 22, 2003, available at: - * http://www.intel.com/design/iio/specupdt/273415.htm - */ -.macro a0_alias basename - .globl xscale_80200_A0_A1_\basename - .type xscale_80200_A0_A1_\basename , %function - .equ xscale_80200_A0_A1_\basename , xscale_\basename -.endm - -/* - * Most of the cache functions are unchanged for these processor revisions. - * Export suitable alias symbols for the unchanged functions: - */ - a0_alias flush_icache_all - a0_alias flush_user_cache_all - a0_alias flush_kern_cache_all - a0_alias flush_kern_cache_louis - a0_alias flush_user_cache_range - a0_alias coherent_kern_range - a0_alias coherent_user_range - a0_alias flush_kern_dcache_area - a0_alias dma_flush_range - a0_alias dma_unmap_area - - @ define struct cpu_cache_fns (see <asm/cacheflush.h> and proc-macros.S) - define_cache_functions xscale_80200_A0_A1 - -ENTRY(cpu_xscale_dcache_clean_area) +SYM_TYPED_FUNC_START(cpu_xscale_dcache_clean_area) 1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry add r0, r0, #CACHELINESIZE subs r1, r1, #CACHELINESIZE bhi 1b ret lr +SYM_FUNC_END(cpu_xscale_dcache_clean_area) /* =============================== PageTable ============================== */ @@ -468,13 +449,14 @@ ENTRY(cpu_xscale_dcache_clean_area) * pgd: new page tables */ .align 5 -ENTRY(cpu_xscale_switch_mm) +SYM_TYPED_FUNC_START(cpu_xscale_switch_mm) clean_d_cache r1, r2 mcr p15, 0, ip, c7, c5, 0 @ Invalidate I cache & BTB mcr p15, 0, ip, c7, c10, 4 @ Drain Write (& Fill) Buffer mcr p15, 0, r0, c2, c0, 0 @ load page table pointer mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs cpwait_ret lr, ip +SYM_FUNC_END(cpu_xscale_switch_mm) /* * cpu_xscale_set_pte_ext(ptep, pte, ext) @@ -502,7 +484,7 @@ cpu_xscale_mt_table: .long 0x00 @ unused .align 5 -ENTRY(cpu_xscale_set_pte_ext) +SYM_TYPED_FUNC_START(cpu_xscale_set_pte_ext) xscale_set_pte_ext_prologue @ @@ -520,6 +502,7 @@ ENTRY(cpu_xscale_set_pte_ext) xscale_set_pte_ext_epilogue ret lr +SYM_FUNC_END(cpu_xscale_set_pte_ext) .ltorg .align @@ -527,7 +510,7 @@ ENTRY(cpu_xscale_set_pte_ext) .globl cpu_xscale_suspend_size .equ cpu_xscale_suspend_size, 4 * 6 #ifdef CONFIG_ARM_CPU_SUSPEND -ENTRY(cpu_xscale_do_suspend) +SYM_TYPED_FUNC_START(cpu_xscale_do_suspend) stmfd sp!, {r4 - r9, lr} mrc p14, 0, r4, c6, c0, 0 @ clock configuration, for turbo mode mrc p15, 0, r5, c15, c1, 0 @ CP access reg @@ -538,9 +521,9 @@ ENTRY(cpu_xscale_do_suspend) bic r4, r4, #2 @ clear frequency change bit stmia r0, {r4 - r9} @ store cp regs ldmfd sp!, {r4 - r9, pc} -ENDPROC(cpu_xscale_do_suspend) +SYM_FUNC_END(cpu_xscale_do_suspend) -ENTRY(cpu_xscale_do_resume) +SYM_TYPED_FUNC_START(cpu_xscale_do_resume) ldmia r0, {r4 - r9} @ load cp regs mov ip, #0 mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs @@ -553,7 +536,7 @@ ENTRY(cpu_xscale_do_resume) mcr p15, 0, r8, c1, c0, 1 @ auxiliary control reg mov r0, r9 @ control register b cpu_resume_mmu -ENDPROC(cpu_xscale_do_resume) +SYM_FUNC_END(cpu_xscale_do_resume) #endif .type __xscale_setup, #function diff --git a/arch/arm/mm/proc.c b/arch/arm/mm/proc.c new file mode 100644 index 000000000000..bdbbf65d1b36 --- /dev/null +++ b/arch/arm/mm/proc.c @@ -0,0 +1,500 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * This file defines C prototypes for the low-level processor assembly functions + * and creates a reference for CFI. This needs to be done for every assembly + * processor ("proc") function that is called from C but does not have a + * corresponding C implementation. + * + * Processors are listed in the order they appear in the Makefile. + * + * Functions are listed if and only if they see use on the target CPU, and in + * the order they are defined in struct processor. + */ +#include <asm/proc-fns.h> + +#ifdef CONFIG_CPU_ARM7TDMI +void cpu_arm7tdmi_proc_init(void); +__ADDRESSABLE(cpu_arm7tdmi_proc_init); +void cpu_arm7tdmi_proc_fin(void); +__ADDRESSABLE(cpu_arm7tdmi_proc_fin); +void cpu_arm7tdmi_reset(void); +__ADDRESSABLE(cpu_arm7tdmi_reset); +int cpu_arm7tdmi_do_idle(void); +__ADDRESSABLE(cpu_arm7tdmi_do_idle); +void cpu_arm7tdmi_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm7tdmi_dcache_clean_area); +void cpu_arm7tdmi_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm7tdmi_switch_mm); +#endif + +#ifdef CONFIG_CPU_ARM720T +void cpu_arm720_proc_init(void); +__ADDRESSABLE(cpu_arm720_proc_init); +void cpu_arm720_proc_fin(void); +__ADDRESSABLE(cpu_arm720_proc_fin); +void cpu_arm720_reset(void); +__ADDRESSABLE(cpu_arm720_reset); +int cpu_arm720_do_idle(void); +__ADDRESSABLE(cpu_arm720_do_idle); +void cpu_arm720_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm720_dcache_clean_area); +void cpu_arm720_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm720_switch_mm); +void cpu_arm720_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_arm720_set_pte_ext); +#endif + +#ifdef CONFIG_CPU_ARM740T +void cpu_arm740_proc_init(void); +__ADDRESSABLE(cpu_arm740_proc_init); +void cpu_arm740_proc_fin(void); +__ADDRESSABLE(cpu_arm740_proc_fin); +void cpu_arm740_reset(void); +__ADDRESSABLE(cpu_arm740_reset); +int cpu_arm740_do_idle(void); +__ADDRESSABLE(cpu_arm740_do_idle); +void cpu_arm740_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm740_dcache_clean_area); +void cpu_arm740_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm740_switch_mm); +#endif + +#ifdef CONFIG_CPU_ARM9TDMI +void cpu_arm9tdmi_proc_init(void); +__ADDRESSABLE(cpu_arm9tdmi_proc_init); +void cpu_arm9tdmi_proc_fin(void); +__ADDRESSABLE(cpu_arm9tdmi_proc_fin); +void cpu_arm9tdmi_reset(void); +__ADDRESSABLE(cpu_arm9tdmi_reset); +int cpu_arm9tdmi_do_idle(void); +__ADDRESSABLE(cpu_arm9tdmi_do_idle); +void cpu_arm9tdmi_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm9tdmi_dcache_clean_area); +void cpu_arm9tdmi_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm9tdmi_switch_mm); +#endif + +#ifdef CONFIG_CPU_ARM920T +void cpu_arm920_proc_init(void); +__ADDRESSABLE(cpu_arm920_proc_init); +void cpu_arm920_proc_fin(void); +__ADDRESSABLE(cpu_arm920_proc_fin); +void cpu_arm920_reset(void); +__ADDRESSABLE(cpu_arm920_reset); +int cpu_arm920_do_idle(void); +__ADDRESSABLE(cpu_arm920_do_idle); +void cpu_arm920_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm920_dcache_clean_area); +void cpu_arm920_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm920_switch_mm); +void cpu_arm920_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_arm920_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_arm920_do_suspend(void *); +__ADDRESSABLE(cpu_arm920_do_suspend); +void cpu_arm920_do_resume(void *); +__ADDRESSABLE(cpu_arm920_do_resume); +#endif /* CONFIG_ARM_CPU_SUSPEND */ +#endif /* CONFIG_CPU_ARM920T */ + +#ifdef CONFIG_CPU_ARM922T +void cpu_arm922_proc_init(void); +__ADDRESSABLE(cpu_arm922_proc_init); +void cpu_arm922_proc_fin(void); +__ADDRESSABLE(cpu_arm922_proc_fin); +void cpu_arm922_reset(void); +__ADDRESSABLE(cpu_arm922_reset); +int cpu_arm922_do_idle(void); +__ADDRESSABLE(cpu_arm922_do_idle); +void cpu_arm922_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm922_dcache_clean_area); +void cpu_arm922_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm922_switch_mm); +void cpu_arm922_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_arm922_set_pte_ext); +#endif + +#ifdef CONFIG_CPU_ARM925T +void cpu_arm925_proc_init(void); +__ADDRESSABLE(cpu_arm925_proc_init); +void cpu_arm925_proc_fin(void); +__ADDRESSABLE(cpu_arm925_proc_fin); +void cpu_arm925_reset(void); +__ADDRESSABLE(cpu_arm925_reset); +int cpu_arm925_do_idle(void); +__ADDRESSABLE(cpu_arm925_do_idle); +void cpu_arm925_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm925_dcache_clean_area); +void cpu_arm925_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm925_switch_mm); +void cpu_arm925_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_arm925_set_pte_ext); +#endif + +#ifdef CONFIG_CPU_ARM926T +void cpu_arm926_proc_init(void); +__ADDRESSABLE(cpu_arm926_proc_init); +void cpu_arm926_proc_fin(void); +__ADDRESSABLE(cpu_arm926_proc_fin); +void cpu_arm926_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_arm926_reset); +int cpu_arm926_do_idle(void); +__ADDRESSABLE(cpu_arm926_do_idle); +void cpu_arm926_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm926_dcache_clean_area); +void cpu_arm926_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm926_switch_mm); +void cpu_arm926_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_arm926_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_arm926_do_suspend(void *); +__ADDRESSABLE(cpu_arm926_do_suspend); +void cpu_arm926_do_resume(void *); +__ADDRESSABLE(cpu_arm926_do_resume); +#endif /* CONFIG_ARM_CPU_SUSPEND */ +#endif /* CONFIG_CPU_ARM926T */ + +#ifdef CONFIG_CPU_ARM940T +void cpu_arm940_proc_init(void); +__ADDRESSABLE(cpu_arm940_proc_init); +void cpu_arm940_proc_fin(void); +__ADDRESSABLE(cpu_arm940_proc_fin); +void cpu_arm940_reset(void); +__ADDRESSABLE(cpu_arm940_reset); +int cpu_arm940_do_idle(void); +__ADDRESSABLE(cpu_arm940_do_idle); +void cpu_arm940_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm940_dcache_clean_area); +void cpu_arm940_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm940_switch_mm); +#endif + +#ifdef CONFIG_CPU_ARM946E +void cpu_arm946_proc_init(void); +__ADDRESSABLE(cpu_arm946_proc_init); +void cpu_arm946_proc_fin(void); +__ADDRESSABLE(cpu_arm946_proc_fin); +void cpu_arm946_reset(void); +__ADDRESSABLE(cpu_arm946_reset); +int cpu_arm946_do_idle(void); +__ADDRESSABLE(cpu_arm946_do_idle); +void cpu_arm946_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm946_dcache_clean_area); +void cpu_arm946_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm946_switch_mm); +#endif + +#ifdef CONFIG_CPU_FA526 +void cpu_fa526_proc_init(void); +__ADDRESSABLE(cpu_fa526_proc_init); +void cpu_fa526_proc_fin(void); +__ADDRESSABLE(cpu_fa526_proc_fin); +void cpu_fa526_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_fa526_reset); +int cpu_fa526_do_idle(void); +__ADDRESSABLE(cpu_fa526_do_idle); +void cpu_fa526_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_fa526_dcache_clean_area); +void cpu_fa526_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_fa526_switch_mm); +void cpu_fa526_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_fa526_set_pte_ext); +#endif + +#ifdef CONFIG_CPU_ARM1020 +void cpu_arm1020_proc_init(void); +__ADDRESSABLE(cpu_arm1020_proc_init); +void cpu_arm1020_proc_fin(void); +__ADDRESSABLE(cpu_arm1020_proc_fin); +void cpu_arm1020_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_arm1020_reset); +int cpu_arm1020_do_idle(void); +__ADDRESSABLE(cpu_arm1020_do_idle); +void cpu_arm1020_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm1020_dcache_clean_area); +void cpu_arm1020_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm1020_switch_mm); +void cpu_arm1020_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_arm1020_set_pte_ext); +#endif + +#ifdef CONFIG_CPU_ARM1020E +void cpu_arm1020e_proc_init(void); +__ADDRESSABLE(cpu_arm1020e_proc_init); +void cpu_arm1020e_proc_fin(void); +__ADDRESSABLE(cpu_arm1020e_proc_fin); +void cpu_arm1020e_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_arm1020e_reset); +int cpu_arm1020e_do_idle(void); +__ADDRESSABLE(cpu_arm1020e_do_idle); +void cpu_arm1020e_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm1020e_dcache_clean_area); +void cpu_arm1020e_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm1020e_switch_mm); +void cpu_arm1020e_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_arm1020e_set_pte_ext); +#endif + +#ifdef CONFIG_CPU_ARM1022 +void cpu_arm1022_proc_init(void); +__ADDRESSABLE(cpu_arm1022_proc_init); +void cpu_arm1022_proc_fin(void); +__ADDRESSABLE(cpu_arm1022_proc_fin); +void cpu_arm1022_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_arm1022_reset); +int cpu_arm1022_do_idle(void); +__ADDRESSABLE(cpu_arm1022_do_idle); +void cpu_arm1022_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm1022_dcache_clean_area); +void cpu_arm1022_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm1022_switch_mm); +void cpu_arm1022_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_arm1022_set_pte_ext); +#endif + +#ifdef CONFIG_CPU_ARM1026 +void cpu_arm1026_proc_init(void); +__ADDRESSABLE(cpu_arm1026_proc_init); +void cpu_arm1026_proc_fin(void); +__ADDRESSABLE(cpu_arm1026_proc_fin); +void cpu_arm1026_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_arm1026_reset); +int cpu_arm1026_do_idle(void); +__ADDRESSABLE(cpu_arm1026_do_idle); +void cpu_arm1026_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_arm1026_dcache_clean_area); +void cpu_arm1026_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_arm1026_switch_mm); +void cpu_arm1026_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_arm1026_set_pte_ext); +#endif + +#ifdef CONFIG_CPU_SA110 +void cpu_sa110_proc_init(void); +__ADDRESSABLE(cpu_sa110_proc_init); +void cpu_sa110_proc_fin(void); +__ADDRESSABLE(cpu_sa110_proc_fin); +void cpu_sa110_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_sa110_reset); +int cpu_sa110_do_idle(void); +__ADDRESSABLE(cpu_sa110_do_idle); +void cpu_sa110_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_sa110_dcache_clean_area); +void cpu_sa110_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_sa110_switch_mm); +void cpu_sa110_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_sa110_set_pte_ext); +#endif + +#ifdef CONFIG_CPU_SA1100 +void cpu_sa1100_proc_init(void); +__ADDRESSABLE(cpu_sa1100_proc_init); +void cpu_sa1100_proc_fin(void); +__ADDRESSABLE(cpu_sa1100_proc_fin); +void cpu_sa1100_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_sa1100_reset); +int cpu_sa1100_do_idle(void); +__ADDRESSABLE(cpu_sa1100_do_idle); +void cpu_sa1100_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_sa1100_dcache_clean_area); +void cpu_sa1100_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_sa1100_switch_mm); +void cpu_sa1100_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_sa1100_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_sa1100_do_suspend(void *); +__ADDRESSABLE(cpu_sa1100_do_suspend); +void cpu_sa1100_do_resume(void *); +__ADDRESSABLE(cpu_sa1100_do_resume); +#endif /* CONFIG_ARM_CPU_SUSPEND */ +#endif /* CONFIG_CPU_SA1100 */ + +#ifdef CONFIG_CPU_XSCALE +void cpu_xscale_proc_init(void); +__ADDRESSABLE(cpu_xscale_proc_init); +void cpu_xscale_proc_fin(void); +__ADDRESSABLE(cpu_xscale_proc_fin); +void cpu_xscale_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_xscale_reset); +int cpu_xscale_do_idle(void); +__ADDRESSABLE(cpu_xscale_do_idle); +void cpu_xscale_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_xscale_dcache_clean_area); +void cpu_xscale_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_xscale_switch_mm); +void cpu_xscale_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_xscale_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_xscale_do_suspend(void *); +__ADDRESSABLE(cpu_xscale_do_suspend); +void cpu_xscale_do_resume(void *); +__ADDRESSABLE(cpu_xscale_do_resume); +#endif /* CONFIG_ARM_CPU_SUSPEND */ +#endif /* CONFIG_CPU_XSCALE */ + +#ifdef CONFIG_CPU_XSC3 +void cpu_xsc3_proc_init(void); +__ADDRESSABLE(cpu_xsc3_proc_init); +void cpu_xsc3_proc_fin(void); +__ADDRESSABLE(cpu_xsc3_proc_fin); +void cpu_xsc3_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_xsc3_reset); +int cpu_xsc3_do_idle(void); +__ADDRESSABLE(cpu_xsc3_do_idle); +void cpu_xsc3_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_xsc3_dcache_clean_area); +void cpu_xsc3_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_xsc3_switch_mm); +void cpu_xsc3_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_xsc3_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_xsc3_do_suspend(void *); +__ADDRESSABLE(cpu_xsc3_do_suspend); +void cpu_xsc3_do_resume(void *); +__ADDRESSABLE(cpu_xsc3_do_resume); +#endif /* CONFIG_ARM_CPU_SUSPEND */ +#endif /* CONFIG_CPU_XSC3 */ + +#ifdef CONFIG_CPU_MOHAWK +void cpu_mohawk_proc_init(void); +__ADDRESSABLE(cpu_mohawk_proc_init); +void cpu_mohawk_proc_fin(void); +__ADDRESSABLE(cpu_mohawk_proc_fin); +void cpu_mohawk_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_mohawk_reset); +int cpu_mohawk_do_idle(void); +__ADDRESSABLE(cpu_mohawk_do_idle); +void cpu_mohawk_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_mohawk_dcache_clean_area); +void cpu_mohawk_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_mohawk_switch_mm); +void cpu_mohawk_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_mohawk_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_mohawk_do_suspend(void *); +__ADDRESSABLE(cpu_mohawk_do_suspend); +void cpu_mohawk_do_resume(void *); +__ADDRESSABLE(cpu_mohawk_do_resume); +#endif /* CONFIG_ARM_CPU_SUSPEND */ +#endif /* CONFIG_CPU_MOHAWK */ + +#ifdef CONFIG_CPU_FEROCEON +void cpu_feroceon_proc_init(void); +__ADDRESSABLE(cpu_feroceon_proc_init); +void cpu_feroceon_proc_fin(void); +__ADDRESSABLE(cpu_feroceon_proc_fin); +void cpu_feroceon_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_feroceon_reset); +int cpu_feroceon_do_idle(void); +__ADDRESSABLE(cpu_feroceon_do_idle); +void cpu_feroceon_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_feroceon_dcache_clean_area); +void cpu_feroceon_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_feroceon_switch_mm); +void cpu_feroceon_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_feroceon_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_feroceon_do_suspend(void *); +__ADDRESSABLE(cpu_feroceon_do_suspend); +void cpu_feroceon_do_resume(void *); +__ADDRESSABLE(cpu_feroceon_do_resume); +#endif /* CONFIG_ARM_CPU_SUSPEND */ +#endif /* CONFIG_CPU_FEROCEON */ + +#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) +void cpu_v6_proc_init(void); +__ADDRESSABLE(cpu_v6_proc_init); +void cpu_v6_proc_fin(void); +__ADDRESSABLE(cpu_v6_proc_fin); +void cpu_v6_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_v6_reset); +int cpu_v6_do_idle(void); +__ADDRESSABLE(cpu_v6_do_idle); +void cpu_v6_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_v6_dcache_clean_area); +void cpu_v6_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_v6_switch_mm); +void cpu_v6_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_v6_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_v6_do_suspend(void *); +__ADDRESSABLE(cpu_v6_do_suspend); +void cpu_v6_do_resume(void *); +__ADDRESSABLE(cpu_v6_do_resume); +#endif /* CONFIG_ARM_CPU_SUSPEND */ +#endif /* CPU_V6 */ + +#ifdef CONFIG_CPU_V7 +void cpu_v7_proc_init(void); +__ADDRESSABLE(cpu_v7_proc_init); +void cpu_v7_proc_fin(void); +__ADDRESSABLE(cpu_v7_proc_fin); +void cpu_v7_reset(void); +__ADDRESSABLE(cpu_v7_reset); +int cpu_v7_do_idle(void); +__ADDRESSABLE(cpu_v7_do_idle); +#ifdef CONFIG_PJ4B_ERRATA_4742 +int cpu_pj4b_do_idle(void); +__ADDRESSABLE(cpu_pj4b_do_idle); +#endif +void cpu_v7_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_v7_dcache_clean_area); +void cpu_v7_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +/* Special switch_mm() callbacks to work around bugs in v7 */ +__ADDRESSABLE(cpu_v7_switch_mm); +void cpu_v7_iciallu_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_v7_iciallu_switch_mm); +void cpu_v7_bpiall_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_v7_bpiall_switch_mm); +#ifdef CONFIG_ARM_LPAE +void cpu_v7_set_pte_ext(pte_t *ptep, pte_t pte); +#else +void cpu_v7_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +#endif +__ADDRESSABLE(cpu_v7_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_v7_do_suspend(void *); +__ADDRESSABLE(cpu_v7_do_suspend); +void cpu_v7_do_resume(void *); +__ADDRESSABLE(cpu_v7_do_resume); +/* Special versions of suspend and resume for the CA9MP cores */ +void cpu_ca9mp_do_suspend(void *); +__ADDRESSABLE(cpu_ca9mp_do_suspend); +void cpu_ca9mp_do_resume(void *); +__ADDRESSABLE(cpu_ca9mp_do_resume); +/* Special versions of suspend and resume for the Marvell PJ4B cores */ +#ifdef CONFIG_CPU_PJ4B +void cpu_pj4b_do_suspend(void *); +__ADDRESSABLE(cpu_pj4b_do_suspend); +void cpu_pj4b_do_resume(void *); +__ADDRESSABLE(cpu_pj4b_do_resume); +#endif /* CONFIG_CPU_PJ4B */ +#endif /* CONFIG_ARM_CPU_SUSPEND */ +#endif /* CONFIG_CPU_V7 */ + +#ifdef CONFIG_CPU_V7M +void cpu_v7m_proc_init(void); +__ADDRESSABLE(cpu_v7m_proc_init); +void cpu_v7m_proc_fin(void); +__ADDRESSABLE(cpu_v7m_proc_fin); +void cpu_v7m_reset(unsigned long addr, bool hvc); +__ADDRESSABLE(cpu_v7m_reset); +int cpu_v7m_do_idle(void); +__ADDRESSABLE(cpu_v7m_do_idle); +void cpu_v7m_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_v7m_dcache_clean_area); +void cpu_v7m_switch_mm(phys_addr_t pgd_phys, struct mm_struct *mm); +__ADDRESSABLE(cpu_v7m_switch_mm); +void cpu_v7m_set_pte_ext(pte_t *ptep, pte_t pte, unsigned int ext); +__ADDRESSABLE(cpu_v7m_set_pte_ext); +#ifdef CONFIG_ARM_CPU_SUSPEND +void cpu_v7m_do_suspend(void *); +__ADDRESSABLE(cpu_v7m_do_suspend); +void cpu_v7m_do_resume(void *); +__ADDRESSABLE(cpu_v7m_do_resume); +#endif /* CONFIG_ARM_CPU_SUSPEND */ +void cpu_cm7_proc_fin(void); +__ADDRESSABLE(cpu_cm7_proc_fin); +void cpu_cm7_dcache_clean_area(void *addr, int size); +__ADDRESSABLE(cpu_cm7_dcache_clean_area); +#endif /* CONFIG_CPU_V7M */ diff --git a/arch/arm/mm/tlb-fa.S b/arch/arm/mm/tlb-fa.S index def6161ec452..85a6fe766b21 100644 --- a/arch/arm/mm/tlb-fa.S +++ b/arch/arm/mm/tlb-fa.S @@ -15,6 +15,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> #include <asm/tlbflush.h> @@ -31,7 +32,7 @@ * - mm - mm_struct describing address space */ .align 4 -ENTRY(fa_flush_user_tlb_range) +SYM_TYPED_FUNC_START(fa_flush_user_tlb_range) vma_vm_mm ip, r2 act_mm r3 @ get current->active_mm eors r3, ip, r3 @ == mm ? @@ -46,9 +47,10 @@ ENTRY(fa_flush_user_tlb_range) blo 1b mcr p15, 0, r3, c7, c10, 4 @ data write barrier ret lr +SYM_FUNC_END(fa_flush_user_tlb_range) -ENTRY(fa_flush_kern_tlb_range) +SYM_TYPED_FUNC_START(fa_flush_kern_tlb_range) mov r3, #0 mcr p15, 0, r3, c7, c10, 4 @ drain WB bic r0, r0, #0x0ff @@ -60,8 +62,4 @@ ENTRY(fa_flush_kern_tlb_range) mcr p15, 0, r3, c7, c10, 4 @ data write barrier mcr p15, 0, r3, c7, c5, 4 @ prefetch flush (isb) ret lr - - __INITDATA - - /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */ - define_tlb_functions fa, fa_tlb_flags +SYM_FUNC_END(fa_flush_kern_tlb_range) diff --git a/arch/arm/mm/tlb-v4.S b/arch/arm/mm/tlb-v4.S index b962b4e75158..09ff69008d94 100644 --- a/arch/arm/mm/tlb-v4.S +++ b/arch/arm/mm/tlb-v4.S @@ -11,6 +11,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> #include <asm/tlbflush.h> @@ -27,7 +28,7 @@ * - mm - mm_struct describing address space */ .align 5 -ENTRY(v4_flush_user_tlb_range) +SYM_TYPED_FUNC_START(v4_flush_user_tlb_range) vma_vm_mm ip, r2 act_mm r3 @ get current->active_mm eors r3, ip, r3 @ == mm ? @@ -40,6 +41,7 @@ ENTRY(v4_flush_user_tlb_range) cmp r0, r1 blo 1b ret lr +SYM_FUNC_END(v4_flush_user_tlb_range) /* * v4_flush_kern_tlb_range(start, end) @@ -50,10 +52,11 @@ ENTRY(v4_flush_user_tlb_range) * - start - virtual address (may not be aligned) * - end - virtual address (may not be aligned) */ +#ifdef CONFIG_CFI_CLANG +SYM_TYPED_FUNC_START(v4_flush_kern_tlb_range) + b .v4_flush_kern_tlb_range +SYM_FUNC_END(v4_flush_kern_tlb_range) +#else .globl v4_flush_kern_tlb_range .equ v4_flush_kern_tlb_range, .v4_flush_kern_tlb_range - - __INITDATA - - /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */ - define_tlb_functions v4, v4_tlb_flags +#endif diff --git a/arch/arm/mm/tlb-v4wb.S b/arch/arm/mm/tlb-v4wb.S index 9348bba7586a..04e46c359e75 100644 --- a/arch/arm/mm/tlb-v4wb.S +++ b/arch/arm/mm/tlb-v4wb.S @@ -11,6 +11,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> #include <asm/tlbflush.h> @@ -27,7 +28,7 @@ * - mm - mm_struct describing address space */ .align 5 -ENTRY(v4wb_flush_user_tlb_range) +SYM_TYPED_FUNC_START(v4wb_flush_user_tlb_range) vma_vm_mm ip, r2 act_mm r3 @ get current->active_mm eors r3, ip, r3 @ == mm ? @@ -43,6 +44,7 @@ ENTRY(v4wb_flush_user_tlb_range) cmp r0, r1 blo 1b ret lr +SYM_FUNC_END(v4wb_flush_user_tlb_range) /* * v4_flush_kern_tlb_range(start, end) @@ -53,7 +55,7 @@ ENTRY(v4wb_flush_user_tlb_range) * - start - virtual address (may not be aligned) * - end - virtual address (may not be aligned) */ -ENTRY(v4wb_flush_kern_tlb_range) +SYM_TYPED_FUNC_START(v4wb_flush_kern_tlb_range) mov r3, #0 mcr p15, 0, r3, c7, c10, 4 @ drain WB bic r0, r0, #0x0ff @@ -64,8 +66,4 @@ ENTRY(v4wb_flush_kern_tlb_range) cmp r0, r1 blo 1b ret lr - - __INITDATA - - /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */ - define_tlb_functions v4wb, v4wb_tlb_flags +SYM_FUNC_END(v4wb_flush_kern_tlb_range) diff --git a/arch/arm/mm/tlb-v4wbi.S b/arch/arm/mm/tlb-v4wbi.S index d4f9040a4111..502dfe5628a3 100644 --- a/arch/arm/mm/tlb-v4wbi.S +++ b/arch/arm/mm/tlb-v4wbi.S @@ -11,6 +11,7 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> #include <asm/tlbflush.h> @@ -26,7 +27,7 @@ * - mm - mm_struct describing address space */ .align 5 -ENTRY(v4wbi_flush_user_tlb_range) +SYM_TYPED_FUNC_START(v4wbi_flush_user_tlb_range) vma_vm_mm ip, r2 act_mm r3 @ get current->active_mm eors r3, ip, r3 @ == mm ? @@ -43,8 +44,9 @@ ENTRY(v4wbi_flush_user_tlb_range) cmp r0, r1 blo 1b ret lr +SYM_FUNC_END(v4wbi_flush_user_tlb_range) -ENTRY(v4wbi_flush_kern_tlb_range) +SYM_TYPED_FUNC_START(v4wbi_flush_kern_tlb_range) mov r3, #0 mcr p15, 0, r3, c7, c10, 4 @ drain WB bic r0, r0, #0x0ff @@ -55,8 +57,4 @@ ENTRY(v4wbi_flush_kern_tlb_range) cmp r0, r1 blo 1b ret lr - - __INITDATA - - /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */ - define_tlb_functions v4wbi, v4wbi_tlb_flags +SYM_FUNC_END(v4wbi_flush_kern_tlb_range) diff --git a/arch/arm/mm/tlb-v6.S b/arch/arm/mm/tlb-v6.S index 1d91e49b2c2d..8256a67ac654 100644 --- a/arch/arm/mm/tlb-v6.S +++ b/arch/arm/mm/tlb-v6.S @@ -9,6 +9,7 @@ */ #include <linux/init.h> #include <linux/linkage.h> +#include <linux/cfi_types.h> #include <asm/asm-offsets.h> #include <asm/assembler.h> #include <asm/page.h> @@ -32,7 +33,7 @@ * - the "Invalidate single entry" instruction will invalidate * both the I and the D TLBs on Harvard-style TLBs */ -ENTRY(v6wbi_flush_user_tlb_range) +SYM_TYPED_FUNC_START(v6wbi_flush_user_tlb_range) vma_vm_mm r3, r2 @ get vma->vm_mm mov ip, #0 mmid r3, r3 @ get vm_mm->context.id @@ -56,6 +57,7 @@ ENTRY(v6wbi_flush_user_tlb_range) blo 1b mcr p15, 0, ip, c7, c10, 4 @ data synchronization barrier ret lr +SYM_FUNC_END(v6wbi_flush_user_tlb_range) /* * v6wbi_flush_kern_tlb_range(start,end) @@ -65,7 +67,7 @@ ENTRY(v6wbi_flush_user_tlb_range) * - start - start address (may not be aligned) * - end - end address (exclusive, may not be aligned) */ -ENTRY(v6wbi_flush_kern_tlb_range) +SYM_TYPED_FUNC_START(v6wbi_flush_kern_tlb_range) mov r2, #0 mcr p15, 0, r2, c7, c10, 4 @ drain write buffer mov r0, r0, lsr #PAGE_SHIFT @ align address @@ -85,8 +87,4 @@ ENTRY(v6wbi_flush_kern_tlb_range) mcr p15, 0, r2, c7, c10, 4 @ data synchronization barrier mcr p15, 0, r2, c7, c5, 4 @ prefetch flush (isb) ret lr - - __INIT - - /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */ - define_tlb_functions v6wbi, v6wbi_tlb_flags +SYM_FUNC_END(v6wbi_flush_kern_tlb_range) diff --git a/arch/arm/mm/tlb-v7.S b/arch/arm/mm/tlb-v7.S index 35fd6d4f0d03..f1aa0764a2cc 100644 --- a/arch/arm/mm/tlb-v7.S +++ b/arch/arm/mm/tlb-v7.S @@ -10,6 +10,7 @@ */ #include <linux/init.h> #include <linux/linkage.h> +#include <linux/cfi_types.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> #include <asm/page.h> @@ -31,7 +32,7 @@ * - the "Invalidate single entry" instruction will invalidate * both the I and the D TLBs on Harvard-style TLBs */ -ENTRY(v7wbi_flush_user_tlb_range) +SYM_TYPED_FUNC_START(v7wbi_flush_user_tlb_range) vma_vm_mm r3, r2 @ get vma->vm_mm mmid r3, r3 @ get vm_mm->context.id dsb ish @@ -57,7 +58,7 @@ ENTRY(v7wbi_flush_user_tlb_range) blo 1b dsb ish ret lr -ENDPROC(v7wbi_flush_user_tlb_range) +SYM_FUNC_END(v7wbi_flush_user_tlb_range) /* * v7wbi_flush_kern_tlb_range(start,end) @@ -67,7 +68,7 @@ ENDPROC(v7wbi_flush_user_tlb_range) * - start - start address (may not be aligned) * - end - end address (exclusive, may not be aligned) */ -ENTRY(v7wbi_flush_kern_tlb_range) +SYM_TYPED_FUNC_START(v7wbi_flush_kern_tlb_range) dsb ish mov r0, r0, lsr #PAGE_SHIFT @ align address mov r1, r1, lsr #PAGE_SHIFT @@ -86,9 +87,4 @@ ENTRY(v7wbi_flush_kern_tlb_range) dsb ish isb ret lr -ENDPROC(v7wbi_flush_kern_tlb_range) - - __INIT - - /* define struct cpu_tlb_fns (see <asm/tlbflush.h> and proc-macros.S) */ - define_tlb_functions v7wbi, v7wbi_tlb_flags_up, flags_smp=v7wbi_tlb_flags_smp +SYM_FUNC_END(v7wbi_flush_kern_tlb_range) diff --git a/arch/arm/mm/tlb.c b/arch/arm/mm/tlb.c new file mode 100644 index 000000000000..42359793120b --- /dev/null +++ b/arch/arm/mm/tlb.c @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright 2024 Google LLC +// Author: Ard Biesheuvel <ardb@google.com> + +#include <linux/types.h> +#include <asm/tlbflush.h> + +#ifdef CONFIG_CPU_TLB_V4WT +void v4_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v4_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v4_tlb_fns __initconst = { + .flush_user_range = v4_flush_user_tlb_range, + .flush_kern_range = v4_flush_kern_tlb_range, + .tlb_flags = v4_tlb_flags, +}; +#endif + +#ifdef CONFIG_CPU_TLB_V4WB +void v4wb_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v4wb_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v4wb_tlb_fns __initconst = { + .flush_user_range = v4wb_flush_user_tlb_range, + .flush_kern_range = v4wb_flush_kern_tlb_range, + .tlb_flags = v4wb_tlb_flags, +}; +#endif + +#if defined(CONFIG_CPU_TLB_V4WBI) || defined(CONFIG_CPU_TLB_FEROCEON) +void v4wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v4wbi_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v4wbi_tlb_fns __initconst = { + .flush_user_range = v4wbi_flush_user_tlb_range, + .flush_kern_range = v4wbi_flush_kern_tlb_range, + .tlb_flags = v4wbi_tlb_flags, +}; +#endif + +#ifdef CONFIG_CPU_TLB_V6 +void v6wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v6wbi_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v6wbi_tlb_fns __initconst = { + .flush_user_range = v6wbi_flush_user_tlb_range, + .flush_kern_range = v6wbi_flush_kern_tlb_range, + .tlb_flags = v6wbi_tlb_flags, +}; +#endif + +#ifdef CONFIG_CPU_TLB_V7 +void v7wbi_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void v7wbi_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns v7wbi_tlb_fns __initconst = { + .flush_user_range = v7wbi_flush_user_tlb_range, + .flush_kern_range = v7wbi_flush_kern_tlb_range, + .tlb_flags = IS_ENABLED(CONFIG_SMP) ? v7wbi_tlb_flags_smp + : v7wbi_tlb_flags_up, +}; + +#ifdef CONFIG_SMP_ON_UP +/* This will be run-time patched so the offset better be right */ +static_assert(offsetof(struct cpu_tlb_fns, tlb_flags) == 8); + +asm(" .pushsection \".alt.smp.init\", \"a\" \n" \ + " .align 2 \n" \ + " .long v7wbi_tlb_fns + 8 - . \n" \ + " .long " __stringify(v7wbi_tlb_flags_up) " \n" \ + " .popsection \n"); +#endif +#endif + +#ifdef CONFIG_CPU_TLB_FA +void fa_flush_user_tlb_range(unsigned long, unsigned long, struct vm_area_struct *); +void fa_flush_kern_tlb_range(unsigned long, unsigned long); + +struct cpu_tlb_fns fa_tlb_fns __initconst = { + .flush_user_range = fa_flush_user_tlb_range, + .flush_kern_range = fa_flush_kern_tlb_range, + .tlb_flags = fa_tlb_flags, +}; +#endif diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c index a24c152bfaac..aba3aa95b224 100644 --- a/drivers/amba/bus.c +++ b/drivers/amba/bus.c @@ -488,28 +488,31 @@ static int __init amba_stub_drv_init(void) * waiting on amba_match(). So, register a stub driver to make sure * amba_match() is called even if no amba driver has been registered. */ - return amba_driver_register(&amba_proxy_drv); + return __amba_driver_register(&amba_proxy_drv, NULL); } late_initcall_sync(amba_stub_drv_init); /** - * amba_driver_register - register an AMBA device driver + * __amba_driver_register - register an AMBA device driver * @drv: amba device driver structure + * @owner: owning module/driver * * Register an AMBA device driver with the Linux device model * core. If devices pre-exist, the drivers probe function will * be called. */ -int amba_driver_register(struct amba_driver *drv) +int __amba_driver_register(struct amba_driver *drv, + struct module *owner) { if (!drv->probe) return -EINVAL; + drv->drv.owner = owner; drv->drv.bus = &amba_bustype; return driver_register(&drv->drv); } -EXPORT_SYMBOL(amba_driver_register); +EXPORT_SYMBOL(__amba_driver_register); /** * amba_driver_unregister - remove an AMBA device driver diff --git a/drivers/char/hw_random/nomadik-rng.c b/drivers/char/hw_random/nomadik-rng.c index a2009fc4ad3c..f2a2aa7a531c 100644 --- a/drivers/char/hw_random/nomadik-rng.c +++ b/drivers/char/hw_random/nomadik-rng.c @@ -78,7 +78,6 @@ MODULE_DEVICE_TABLE(amba, nmk_rng_ids); static struct amba_driver nmk_rng_driver = { .drv = { - .owner = THIS_MODULE, .name = "rng", }, .probe = nmk_rng_probe, diff --git a/drivers/clk/clkdev.c b/drivers/clk/clkdev.c index 9cd80522ca2d..6a77d7e201a9 100644 --- a/drivers/clk/clkdev.c +++ b/drivers/clk/clkdev.c @@ -158,23 +158,54 @@ vclkdev_alloc(struct clk_hw *hw, const char *con_id, const char *dev_fmt, va_list ap) { struct clk_lookup_alloc *cla; + struct va_format vaf; + const char *failure; + va_list ap_copy; + size_t max_size; + ssize_t res; cla = kzalloc(sizeof(*cla), GFP_KERNEL); if (!cla) return NULL; + va_copy(ap_copy, ap); + cla->cl.clk_hw = hw; if (con_id) { - strscpy(cla->con_id, con_id, sizeof(cla->con_id)); + res = strscpy(cla->con_id, con_id, sizeof(cla->con_id)); + if (res < 0) { + max_size = sizeof(cla->con_id); + failure = "connection"; + goto fail; + } cla->cl.con_id = cla->con_id; } if (dev_fmt) { - vscnprintf(cla->dev_id, sizeof(cla->dev_id), dev_fmt, ap); + res = vsnprintf(cla->dev_id, sizeof(cla->dev_id), dev_fmt, ap); + if (res >= sizeof(cla->dev_id)) { + max_size = sizeof(cla->dev_id); + failure = "device"; + goto fail; + } cla->cl.dev_id = cla->dev_id; } + va_end(ap_copy); + return &cla->cl; + +fail: + if (dev_fmt) + vaf.fmt = dev_fmt; + else + vaf.fmt = "null-device"; + vaf.va = &ap_copy; + pr_err("%pV:%s: %s ID is greater than %zu\n", + &vaf, con_id, failure, max_size); + va_end(ap_copy); + kfree(cla); + return NULL; } static struct clk_lookup * diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index ad8e3da1b2cd..60c4de8dac1d 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -3262,7 +3262,6 @@ MODULE_DEVICE_TABLE(amba, pl330_ids); static struct amba_driver pl330_driver = { .drv = { - .owner = THIS_MODULE, .name = "dma-pl330", .pm = &pl330_pm, }, diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c index 3949ded0d4fa..375bd0d89b0c 100644 --- a/drivers/hwtracing/coresight/coresight-catu.c +++ b/drivers/hwtracing/coresight/coresight-catu.c @@ -590,7 +590,6 @@ MODULE_DEVICE_TABLE(amba, catu_ids); static struct amba_driver catu_driver = { .drv = { .name = "coresight-catu", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = catu_probe, diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c index e805617020d0..d2b5a5718c29 100644 --- a/drivers/hwtracing/coresight/coresight-cti-core.c +++ b/drivers/hwtracing/coresight/coresight-cti-core.c @@ -982,7 +982,6 @@ MODULE_DEVICE_TABLE(amba, cti_ids); static struct amba_driver cti_driver = { .drv = { .name = "coresight-cti", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = cti_probe, diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index 3aab182b562f..7edd3f1d0d46 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -844,7 +844,6 @@ MODULE_DEVICE_TABLE(amba, etb_ids); static struct amba_driver etb_driver = { .drv = { .name = "coresight-etb10", - .owner = THIS_MODULE, .pm = &etb_dev_pm_ops, .suppress_bind_attrs = true, diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c index 9d5c1391ffb1..8b362605d242 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c @@ -1008,7 +1008,6 @@ MODULE_DEVICE_TABLE(amba, etm_ids); static struct amba_driver etm_driver = { .drv = { .name = "coresight-etm3x", - .owner = THIS_MODULE, .pm = &etm_dev_pm_ops, .suppress_bind_attrs = true, }, diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index c2ca4a02dfce..e6cd9705596c 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -2344,7 +2344,6 @@ MODULE_DEVICE_TABLE(amba, etm4_ids); static struct amba_driver etm4x_amba_driver = { .drv = { .name = "coresight-etm4x", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = etm4_probe_amba, diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c index ef1a0abfee4e..5ab1f592917a 100644 --- a/drivers/hwtracing/coresight/coresight-funnel.c +++ b/drivers/hwtracing/coresight/coresight-funnel.c @@ -399,7 +399,6 @@ MODULE_DEVICE_TABLE(amba, dynamic_funnel_ids); static struct amba_driver dynamic_funnel_driver = { .drv = { .name = "coresight-dynamic-funnel", - .owner = THIS_MODULE, .pm = &funnel_dev_pm_ops, .suppress_bind_attrs = true, }, diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index 73452d9dc13b..2bb9ba66e3c0 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -406,7 +406,6 @@ static struct amba_driver dynamic_replicator_driver = { .drv = { .name = "coresight-dynamic-replicator", .pm = &replicator_dev_pm_ops, - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = dynamic_replicator_probe, diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 974d37e5f94c..15b52358965c 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -954,7 +954,6 @@ MODULE_DEVICE_TABLE(amba, stm_ids); static struct amba_driver stm_driver = { .drv = { .name = "coresight-stm", - .owner = THIS_MODULE, .pm = &stm_dev_pm_ops, .suppress_bind_attrs = true, }, diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c index 72005b0c633e..0d251cae814f 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-core.c +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c @@ -602,7 +602,6 @@ MODULE_DEVICE_TABLE(amba, tmc_ids); static struct amba_driver tmc_driver = { .drv = { .name = "coresight-tmc", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = tmc_probe, diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c index 7739bc7adc44..bfca103f9f84 100644 --- a/drivers/hwtracing/coresight/coresight-tpda.c +++ b/drivers/hwtracing/coresight/coresight-tpda.c @@ -333,7 +333,6 @@ static struct amba_id tpda_ids[] = { static struct amba_driver tpda_driver = { .drv = { .name = "coresight-tpda", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = tpda_probe, diff --git a/drivers/hwtracing/coresight/coresight-tpdm.c b/drivers/hwtracing/coresight/coresight-tpdm.c index a9708ab0d488..0726f8842552 100644 --- a/drivers/hwtracing/coresight/coresight-tpdm.c +++ b/drivers/hwtracing/coresight/coresight-tpdm.c @@ -1310,7 +1310,6 @@ static struct amba_id tpdm_ids[] = { static struct amba_driver tpdm_driver = { .drv = { .name = "coresight-tpdm", - .owner = THIS_MODULE, .suppress_bind_attrs = true, }, .probe = tpdm_probe, diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index 29024f880fda..7dc9ea564bca 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -236,7 +236,6 @@ MODULE_DEVICE_TABLE(amba, tpiu_ids); static struct amba_driver tpiu_driver = { .drv = { .name = "coresight-tpiu", - .owner = THIS_MODULE, .pm = &tpiu_dev_pm_ops, .suppress_bind_attrs = true, }, diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c index 4f41a3c7824d..17fb313565b8 100644 --- a/drivers/i2c/busses/i2c-nomadik.c +++ b/drivers/i2c/busses/i2c-nomadik.c @@ -1194,7 +1194,6 @@ MODULE_DEVICE_TABLE(amba, nmk_i2c_ids); static struct amba_driver nmk_i2c_driver = { .drv = { - .owner = THIS_MODULE, .name = DRIVER_NAME, .pm = pm_ptr(&nmk_i2c_pm), }, diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c index 8fbfa448be4a..496bb7a312d2 100644 --- a/drivers/input/serio/ambakmi.c +++ b/drivers/input/serio/ambakmi.c @@ -195,7 +195,6 @@ MODULE_DEVICE_TABLE(amba, amba_kmi_idtable); static struct amba_driver ambakmi_driver = { .drv = { .name = "kmi-pl050", - .owner = THIS_MODULE, .pm = pm_sleep_ptr(&amba_kmi_dev_pm_ops), }, .id_table = amba_kmi_idtable, diff --git a/drivers/memory/pl353-smc.c b/drivers/memory/pl353-smc.c index 48540817e046..56e51737c81f 100644 --- a/drivers/memory/pl353-smc.c +++ b/drivers/memory/pl353-smc.c @@ -154,7 +154,6 @@ MODULE_DEVICE_TABLE(amba, pl353_ids); static struct amba_driver pl353_smc_driver = { .drv = { - .owner = THIS_MODULE, .name = "pl353-smc", .pm = &pl353_smc_dev_pm_ops, }, diff --git a/drivers/vfio/platform/vfio_amba.c b/drivers/vfio/platform/vfio_amba.c index 485c6f9161a9..ff8ff8480968 100644 --- a/drivers/vfio/platform/vfio_amba.c +++ b/drivers/vfio/platform/vfio_amba.c @@ -134,7 +134,6 @@ static struct amba_driver vfio_amba_driver = { .id_table = vfio_amba_ids, .drv = { .name = "vfio-amba", - .owner = THIS_MODULE, }, .driver_managed_dma = true, }; diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index c60a6a14638c..958a55bcc708 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -112,11 +112,18 @@ extern struct bus_type amba_bustype; #define amba_get_drvdata(d) dev_get_drvdata(&d->dev) #define amba_set_drvdata(d,p) dev_set_drvdata(&d->dev, p) +/* + * use a macro to avoid include chaining to get THIS_MODULE + */ +#define amba_driver_register(drv) \ + __amba_driver_register(drv, THIS_MODULE) + #ifdef CONFIG_ARM_AMBA -int amba_driver_register(struct amba_driver *); +int __amba_driver_register(struct amba_driver *, struct module *); void amba_driver_unregister(struct amba_driver *); #else -static inline int amba_driver_register(struct amba_driver *drv) +static inline int __amba_driver_register(struct amba_driver *drv, + struct module *owner) { return -EINVAL; } |