powerpc: Remove platforms/wsp and associated pieces

__attribute__ ((unused))

WSP is the last user of CONFIG_PPC_A2, so we remove that as well.

Although CONFIG_PPC_ICSWX still exists, it's no longer selectable for
any Book3E platform, so we can remove the code in mmu-book3e.h that
depended on it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

6 files changed, 0 insertions, 188 deletions

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index fab19ec25597..670c312d914e 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -43,7 +43,6 @@ obj-$(CONFIG_PPC_BOOK3S_64)	+= cpu_setup_power.o
 obj-$(CONFIG_PPC_BOOK3S_64)	+= mce.o mce_power.o
 obj64-$(CONFIG_RELOCATABLE)	+= reloc_64.o
 obj-$(CONFIG_PPC_BOOK3E_64)	+= exceptions-64e.o idle_book3e.o
-obj-$(CONFIG_PPC_A2)		+= cpu_setup_a2.o
 obj-$(CONFIG_PPC64)		+= vdso64/
 obj-$(CONFIG_ALTIVEC)		+= vecemu.o
 obj-$(CONFIG_PPC_970_NAP)	+= idle_power4.o
diff --git a/arch/powerpc/kernel/cpu_setup_a2.S b/arch/powerpc/kernel/cpu_setup_a2.S
deleted file mode 100644
index 61f079e05b61..000000000000
--- a/arch/powerpc/kernel/cpu_setup_a2.S
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- *  A2 specific assembly support code
- *
- *  Copyright 2009 Ben Herrenschmidt, IBM Corp.
- *
- *  This program is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU General Public License
- *  as published by the Free Software Foundation; either version
- *  2 of the License, or (at your option) any later version.
- */
-
-#include <asm/asm-offsets.h>
-#include <asm/ppc_asm.h>
-#include <asm/ppc-opcode.h>
-#include <asm/processor.h>
-#include <asm/reg_a2.h>
-#include <asm/reg.h>
-#include <asm/thread_info.h>
-
-/*
- * Disable thdid and class fields in ERATs to bump PID to full 14 bits capacity.
- * This also prevents external LPID accesses but that isn't a problem when not a
- * guest. Under PV, this setting will be ignored and MMUCR will return the right
- * number of PID bits we can use.
- */
-#define MMUCR1_EXTEND_PID \
-	(MMUCR1_ICTID | MMUCR1_ITTID | MMUCR1_DCTID | \
-	 MMUCR1_DTTID | MMUCR1_DCCD)
-
-/*
- * Use extended PIDs if enabled.
- * Don't clear the ERATs on context sync events and enable I & D LRU.
- * Enable ERAT back invalidate when tlbwe overwrites an entry.
- */
-#define INITIAL_MMUCR1 \
-	(MMUCR1_EXTEND_PID | MMUCR1_CSINV_NEVER | MMUCR1_IRRE | \
-	 MMUCR1_DRRE | MMUCR1_TLBWE_BINV)
-
-_GLOBAL(__setup_cpu_a2)
-	/* Some of these are actually thread local and some are
-	 * core local but doing it always won't hurt
-	 */
-
-#ifdef CONFIG_PPC_ICSWX
-	/* Make sure ACOP starts out as zero */
-	li	r3,0
-	mtspr   SPRN_ACOP,r3
-
-	/* Skip the following if we are in Guest mode */
-	mfmsr	r3
-	andis.	r0,r3,MSR_GS@h
-	bne	_icswx_skip_guest
-
-	/* Enable icswx instruction */
-	mfspr   r3,SPRN_A2_CCR2
-	ori     r3,r3,A2_CCR2_ENABLE_ICSWX
-	mtspr   SPRN_A2_CCR2,r3
-
-	/* Unmask all CTs in HACOP */
-	li      r3,-1
-	mtspr   SPRN_HACOP,r3
-_icswx_skip_guest:
-#endif /* CONFIG_PPC_ICSWX */
-
-	/* Enable doorbell */
-	mfspr   r3,SPRN_A2_CCR2
-	oris     r3,r3,A2_CCR2_ENABLE_PC@h
-	mtspr   SPRN_A2_CCR2,r3
-	isync
-
-	/* Setup CCR0 to disable power saving for now as it's busted
-	 * in the current implementations. Setup CCR1 to wake on
-	 * interrupts normally (we write the default value but who
-	 * knows what FW may have clobbered...)
-	 */
-	li	r3,0
-	mtspr	SPRN_A2_CCR0, r3
-	LOAD_REG_IMMEDIATE(r3,0x0f0f0f0f)
-	mtspr	SPRN_A2_CCR1, r3
-
-	/* Initialise MMUCR1 */
-	lis	r3,INITIAL_MMUCR1@h
-	ori	r3,r3,INITIAL_MMUCR1@l
-	mtspr	SPRN_MMUCR1,r3
-
-	/* Set MMUCR2 to enable 4K, 64K, 1M, 16M and 1G pages */
-	LOAD_REG_IMMEDIATE(r3, 0x000a7531)
-	mtspr	SPRN_MMUCR2,r3
-
-	/* Set MMUCR3 to write all thids bit to the TLB */
-	LOAD_REG_IMMEDIATE(r3, 0x0000000f)
-	mtspr	SPRN_MMUCR3,r3
-
-	/* Don't do ERAT stuff if running guest mode */
-	mfmsr	r3
-	andis.	r0,r3,MSR_GS@h
-	bne	1f
-
-	/* Now set the I-ERAT watermark to 15 */
-	lis	r4,(MMUCR0_TLBSEL_I|MMUCR0_ECL)@h
-	mtspr	SPRN_MMUCR0, r4
-	li	r4,A2_IERAT_SIZE-1
-	PPC_ERATWE(R4,R4,3)
-
-	/* Now set the D-ERAT watermark to 31 */
-	lis	r4,(MMUCR0_TLBSEL_D|MMUCR0_ECL)@h
-	mtspr	SPRN_MMUCR0, r4
-	li	r4,A2_DERAT_SIZE-1
-	PPC_ERATWE(R4,R4,3)
-
-	/* And invalidate the beast just in case. That won't get rid of
-	 * a bolted entry though it will be in LRU and so will go away eventually
-	 * but let's not bother for now
-	 */
-	PPC_ERATILX(0,0,R0)
-1:
-	blr
-
-_GLOBAL(__restore_cpu_a2)
-	b	__setup_cpu_a2
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 11da04a4625a..965291b4c2fa 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -2149,44 +2149,6 @@ static struct cpu_spec __initdata cpu_specs[] = {
 	}
 #endif /* CONFIG_PPC32 */
 #endif /* CONFIG_E500 */
-
-#ifdef CONFIG_PPC_A2
-	{	/* Standard A2 (>= DD2) + FPU core */
-		.pvr_mask		= 0xffff0000,
-		.pvr_value		= 0x00480000,
-		.cpu_name		= "A2 (>= DD2)",
-		.cpu_features		= CPU_FTRS_A2,
-		.cpu_user_features	= COMMON_USER_PPC64,
-		.mmu_features		= MMU_FTRS_A2,
-		.icache_bsize		= 64,
-		.dcache_bsize		= 64,
-		.num_pmcs		= 0,
-		.cpu_setup		= __setup_cpu_a2,
-		.cpu_restore		= __restore_cpu_a2,
-		.machine_check		= machine_check_generic,
-		.platform		= "ppca2",
-	},
-	{	/* This is a default entry to get going, to be replaced by
-		 * a real one at some stage
-		 */
-#define CPU_FTRS_BASE_BOOK3E	(CPU_FTR_USE_TB | \
-	    CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_SMT | \
-	    CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE)
-		.pvr_mask		= 0x00000000,
-		.pvr_value		= 0x00000000,
-		.cpu_name		= "Book3E",
-		.cpu_features		= CPU_FTRS_BASE_BOOK3E,
-		.cpu_user_features	= COMMON_USER_PPC64,
-		.mmu_features		= MMU_FTR_TYPE_3E | MMU_FTR_USE_TLBILX |
-					  MMU_FTR_USE_TLBIVAX_BCAST |
-					  MMU_FTR_LOCK_BCAST_INVAL,
-		.icache_bsize		= 64,
-		.dcache_bsize		= 64,
-		.num_pmcs		= 0,
-		.machine_check		= machine_check_generic,
-		.platform		= "power6",
-	},
-#endif /* CONFIG_PPC_A2 */
 };
 
 static struct cpu_spec the_cpu_spec;
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 771b4e92e5d9..bb9cac6c8051 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -1467,22 +1467,6 @@ a2_tlbinit_after_linear_map:
 	.globl  a2_tlbinit_after_iprot_flush
 a2_tlbinit_after_iprot_flush:
 
-#ifdef CONFIG_PPC_EARLY_DEBUG_WSP
-	/* Now establish early debug mappings if applicable */
-	/* Restore the MAS0 we used for linear mapping load */
-	mtspr	SPRN_MAS0,r11
-
-	lis	r3,(MAS1_VALID | MAS1_IPROT)@h
-	ori	r3,r3,(BOOK3E_PAGESZ_4K << MAS1_TSIZE_SHIFT)
-	mtspr	SPRN_MAS1,r3
-	LOAD_REG_IMMEDIATE(r3, WSP_UART_VIRT | MAS2_I | MAS2_G)
-	mtspr	SPRN_MAS2,r3
-	LOAD_REG_IMMEDIATE(r3, WSP_UART_PHYS | MAS3_SR | MAS3_SW)
-	mtspr	SPRN_MAS7_MAS3,r3
-	/* re-use the MAS8 value from the linear mapping */
-	tlbwe
-#endif /* CONFIG_PPC_EARLY_DEBUG_WSP */
-
 	PPC_TLBILX(0,0,R0)
 	sync
 	isync
diff --git a/arch/powerpc/kernel/udbg.c b/arch/powerpc/kernel/udbg.c
index a15837519dca..b7aa07279a63 100644
--- a/arch/powerpc/kernel/udbg.c
+++ b/arch/powerpc/kernel/udbg.c
@@ -62,8 +62,6 @@ void __init udbg_early_init(void)
 	udbg_init_cpm();
 #elif defined(CONFIG_PPC_EARLY_DEBUG_USBGECKO)
 	udbg_init_usbgecko();
-#elif defined(CONFIG_PPC_EARLY_DEBUG_WSP)
-	udbg_init_wsp();
 #elif defined(CONFIG_PPC_EARLY_DEBUG_MEMCONS)
 	/* In memory console */
 	udbg_init_memcons();
diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c
index 75702e207b29..6e7c4923b5ea 100644
--- a/arch/powerpc/kernel/udbg_16550.c
+++ b/arch/powerpc/kernel/udbg_16550.c
@@ -296,14 +296,3 @@ void __init udbg_init_40x_realmode(void)
 }
 
 #endif /* CONFIG_PPC_EARLY_DEBUG_40x */
-
-
-#ifdef CONFIG_PPC_EARLY_DEBUG_WSP
-
-void __init udbg_init_wsp(void)
-{
-	udbg_uart_init_mmio((void *)WSP_UART_VIRT, 1);
-	udbg_uart_setup(57600, 50000000);
-}
-
-#endif /* CONFIG_PPC_EARLY_DEBUG_WSP */