diff options
Diffstat (limited to 'arch/ia64/kernel/setup.c')
| -rw-r--r-- | arch/ia64/kernel/setup.c | 1081 |
1 files changed, 0 insertions, 1081 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c deleted file mode 100644 index 5a55ac82c13a..000000000000 --- a/arch/ia64/kernel/setup.c +++ /dev/null @@ -1,1081 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Architecture-specific setup. - * - * Copyright (C) 1998-2001, 2003-2004 Hewlett-Packard Co - * David Mosberger-Tang <davidm@hpl.hp.com> - * Stephane Eranian <eranian@hpl.hp.com> - * Copyright (C) 2000, 2004 Intel Corp - * Rohit Seth <rohit.seth@intel.com> - * Suresh Siddha <suresh.b.siddha@intel.com> - * Gordon Jin <gordon.jin@intel.com> - * Copyright (C) 1999 VA Linux Systems - * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> - * - * 12/26/04 S.Siddha, G.Jin, R.Seth - * Add multi-threading and multi-core detection - * 11/12/01 D.Mosberger Convert get_cpuinfo() to seq_file based show_cpuinfo(). - * 04/04/00 D.Mosberger renamed cpu_initialized to cpu_online_map - * 03/31/00 R.Seth cpu_initialized and current->processor fixes - * 02/04/00 D.Mosberger some more get_cpuinfo fixes... - * 02/01/00 R.Seth fixed get_cpuinfo for SMP - * 01/07/99 S.Eranian added the support for command line argument - * 06/24/99 W.Drummond added boot_cpu_data. - * 05/28/05 Z. Menyhart Dynamic stride size for "flush_icache_range()" - */ -#include <linux/module.h> -#include <linux/init.h> -#include <linux/pgtable.h> - -#include <linux/acpi.h> -#include <linux/console.h> -#include <linux/delay.h> -#include <linux/cpu.h> -#include <linux/kdev_t.h> -#include <linux/kernel.h> -#include <linux/memblock.h> -#include <linux/reboot.h> -#include <linux/sched/mm.h> -#include <linux/sched/clock.h> -#include <linux/sched/task_stack.h> -#include <linux/seq_file.h> -#include <linux/string.h> -#include <linux/threads.h> -#include <linux/screen_info.h> -#include <linux/dmi.h> -#include <linux/root_dev.h> -#include <linux/serial.h> -#include <linux/serial_core.h> -#include <linux/efi.h> -#include <linux/initrd.h> -#include <linux/pm.h> -#include <linux/cpufreq.h> -#include <linux/kexec.h> -#include <linux/crash_dump.h> - -#include <asm/mca.h> -#include <asm/meminit.h> -#include <asm/page.h> -#include <asm/patch.h> -#include <asm/processor.h> -#include <asm/sal.h> -#include <asm/sections.h> -#include <asm/setup.h> -#include <asm/smp.h> -#include <asm/tlbflush.h> -#include <asm/unistd.h> -#include <asm/uv/uv.h> -#include <asm/xtp.h> - -#if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) -# error "struct cpuinfo_ia64 too big!" -#endif - -char ia64_platform_name[64]; - -#ifdef CONFIG_SMP -unsigned long __per_cpu_offset[NR_CPUS]; -EXPORT_SYMBOL(__per_cpu_offset); -#endif - -DEFINE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info); -EXPORT_SYMBOL(ia64_cpu_info); -DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); -#ifdef CONFIG_SMP -EXPORT_SYMBOL(local_per_cpu_offset); -#endif -unsigned long ia64_cycles_per_usec; -struct ia64_boot_param *ia64_boot_param; -struct screen_info screen_info; -unsigned long vga_console_iobase; -unsigned long vga_console_membase; - -static struct resource data_resource = { - .name = "Kernel data", - .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM -}; - -static struct resource code_resource = { - .name = "Kernel code", - .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM -}; - -static struct resource bss_resource = { - .name = "Kernel bss", - .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM -}; - -unsigned long ia64_max_cacheline_size; - -unsigned long ia64_iobase; /* virtual address for I/O accesses */ -EXPORT_SYMBOL(ia64_iobase); -struct io_space io_space[MAX_IO_SPACES]; -EXPORT_SYMBOL(io_space); -unsigned int num_io_spaces; - -/* - * "flush_icache_range()" needs to know what processor dependent stride size to use - * when it makes i-cache(s) coherent with d-caches. - */ -#define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ -unsigned long ia64_i_cache_stride_shift = ~0; -/* - * "clflush_cache_range()" needs to know what processor dependent stride size to - * use when it flushes cache lines including both d-cache and i-cache. - */ -/* Safest way to go: 32 bytes by 32 bytes */ -#define CACHE_STRIDE_SHIFT 5 -unsigned long ia64_cache_stride_shift = ~0; - -/* - * We use a special marker for the end of memory and it uses the extra (+1) slot - */ -struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; -static int num_rsvd_regions __initdata; - - -/* - * Filter incoming memory segments based on the primitive map created from the boot - * parameters. Segments contained in the map are removed from the memory ranges. A - * caller-specified function is called with the memory ranges that remain after filtering. - * This routine does not assume the incoming segments are sorted. - */ -int __init -filter_rsvd_memory (u64 start, u64 end, void *arg) -{ - u64 range_start, range_end, prev_start; - void (*func)(unsigned long, unsigned long, int); - int i; - -#if IGNORE_PFN0 - if (start == PAGE_OFFSET) { - printk(KERN_WARNING "warning: skipping physical page 0\n"); - start += PAGE_SIZE; - if (start >= end) return 0; - } -#endif - /* - * lowest possible address(walker uses virtual) - */ - prev_start = PAGE_OFFSET; - func = arg; - - for (i = 0; i < num_rsvd_regions; ++i) { - range_start = max(start, prev_start); - range_end = min(end, rsvd_region[i].start); - - if (range_start < range_end) - call_pernode_memory(__pa(range_start), range_end - range_start, func); - - /* nothing more available in this segment */ - if (range_end == end) return 0; - - prev_start = rsvd_region[i].end; - } - /* end of memory marker allows full processing inside loop body */ - return 0; -} - -/* - * Similar to "filter_rsvd_memory()", but the reserved memory ranges - * are not filtered out. - */ -int __init -filter_memory(u64 start, u64 end, void *arg) -{ - void (*func)(unsigned long, unsigned long, int); - -#if IGNORE_PFN0 - if (start == PAGE_OFFSET) { - printk(KERN_WARNING "warning: skipping physical page 0\n"); - start += PAGE_SIZE; - if (start >= end) - return 0; - } -#endif - func = arg; - if (start < end) - call_pernode_memory(__pa(start), end - start, func); - return 0; -} - -static void __init -sort_regions (struct rsvd_region *rsvd_region, int max) -{ - int j; - - /* simple bubble sorting */ - while (max--) { - for (j = 0; j < max; ++j) { - if (rsvd_region[j].start > rsvd_region[j+1].start) { - swap(rsvd_region[j], rsvd_region[j + 1]); - } - } - } -} - -/* merge overlaps */ -static int __init -merge_regions (struct rsvd_region *rsvd_region, int max) -{ - int i; - for (i = 1; i < max; ++i) { - if (rsvd_region[i].start >= rsvd_region[i-1].end) - continue; - if (rsvd_region[i].end > rsvd_region[i-1].end) - rsvd_region[i-1].end = rsvd_region[i].end; - --max; - memmove(&rsvd_region[i], &rsvd_region[i+1], - (max - i) * sizeof(struct rsvd_region)); - } - return max; -} - -/* - * Request address space for all standard resources - */ -static int __init register_memory(void) -{ - code_resource.start = ia64_tpa(_text); - code_resource.end = ia64_tpa(_etext) - 1; - data_resource.start = ia64_tpa(_etext); - data_resource.end = ia64_tpa(_edata) - 1; - bss_resource.start = ia64_tpa(__bss_start); - bss_resource.end = ia64_tpa(_end) - 1; - efi_initialize_iomem_resources(&code_resource, &data_resource, - &bss_resource); - - return 0; -} - -__initcall(register_memory); - - -#ifdef CONFIG_KEXEC - -/* - * This function checks if the reserved crashkernel is allowed on the specific - * IA64 machine flavour. Machines without an IO TLB use swiotlb and require - * some memory below 4 GB (i.e. in 32 bit area), see the implementation of - * kernel/dma/swiotlb.c. The hpzx1 architecture has an IO TLB but cannot use that - * in kdump case. See the comment in sba_init() in sba_iommu.c. - * - * So, the only machvec that really supports loading the kdump kernel - * over 4 GB is "uv". - */ -static int __init check_crashkernel_memory(unsigned long pbase, size_t size) -{ - if (is_uv_system()) - return 1; - else - return pbase < (1UL << 32); -} - -static void __init setup_crashkernel(unsigned long total, int *n) -{ - unsigned long long base = 0, size = 0; - int ret; - - ret = parse_crashkernel(boot_command_line, total, - &size, &base); - if (ret == 0 && size > 0) { - if (!base) { - sort_regions(rsvd_region, *n); - *n = merge_regions(rsvd_region, *n); - base = kdump_find_rsvd_region(size, - rsvd_region, *n); - } - - if (!check_crashkernel_memory(base, size)) { - pr_warn("crashkernel: There would be kdump memory " - "at %ld GB but this is unusable because it " - "must\nbe below 4 GB. Change the memory " - "configuration of the machine.\n", - (unsigned long)(base >> 30)); - return; - } - - if (base != ~0UL) { - printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " - "for crashkernel (System RAM: %ldMB)\n", - (unsigned long)(size >> 20), - (unsigned long)(base >> 20), - (unsigned long)(total >> 20)); - rsvd_region[*n].start = - (unsigned long)__va(base); - rsvd_region[*n].end = - (unsigned long)__va(base + size); - (*n)++; - crashk_res.start = base; - crashk_res.end = base + size - 1; - } - } - efi_memmap_res.start = ia64_boot_param->efi_memmap; - efi_memmap_res.end = efi_memmap_res.start + - ia64_boot_param->efi_memmap_size; - boot_param_res.start = __pa(ia64_boot_param); - boot_param_res.end = boot_param_res.start + - sizeof(*ia64_boot_param); -} -#else -static inline void __init setup_crashkernel(unsigned long total, int *n) -{} -#endif - -#ifdef CONFIG_CRASH_DUMP -static int __init reserve_elfcorehdr(u64 *start, u64 *end) -{ - u64 length; - - /* We get the address using the kernel command line, - * but the size is extracted from the EFI tables. - * Both address and size are required for reservation - * to work properly. - */ - - if (!is_vmcore_usable()) - return -EINVAL; - - if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) { - vmcore_unusable(); - return -EINVAL; - } - - *start = (unsigned long)__va(elfcorehdr_addr); - *end = *start + length; - return 0; -} -#endif /* CONFIG_CRASH_DUMP */ - -/** - * reserve_memory - setup reserved memory areas - * - * Setup the reserved memory areas set aside for the boot parameters, - * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, - * see arch/ia64/include/asm/meminit.h if you need to define more. - */ -void __init -reserve_memory (void) -{ - int n = 0; - unsigned long total_memory; - - /* - * none of the entries in this table overlap - */ - rsvd_region[n].start = (unsigned long) ia64_boot_param; - rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); - n++; - - rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); - rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; - n++; - - rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); - rsvd_region[n].end = (rsvd_region[n].start - + strlen(__va(ia64_boot_param->command_line)) + 1); - n++; - - rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); - rsvd_region[n].end = (unsigned long) ia64_imva(_end); - n++; - -#ifdef CONFIG_BLK_DEV_INITRD - if (ia64_boot_param->initrd_start) { - rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); - rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; - n++; - } -#endif - -#ifdef CONFIG_CRASH_DUMP - if (reserve_elfcorehdr(&rsvd_region[n].start, - &rsvd_region[n].end) == 0) - n++; -#endif - - total_memory = efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); - n++; - - setup_crashkernel(total_memory, &n); - - /* end of memory marker */ - rsvd_region[n].start = ~0UL; - rsvd_region[n].end = ~0UL; - n++; - - num_rsvd_regions = n; - BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); - - sort_regions(rsvd_region, num_rsvd_regions); - num_rsvd_regions = merge_regions(rsvd_region, num_rsvd_regions); - - /* reserve all regions except the end of memory marker with memblock */ - for (n = 0; n < num_rsvd_regions - 1; n++) { - struct rsvd_region *region = &rsvd_region[n]; - phys_addr_t addr = __pa(region->start); - phys_addr_t size = region->end - region->start; - - memblock_reserve(addr, size); - } -} - -/** - * find_initrd - get initrd parameters from the boot parameter structure - * - * Grab the initrd start and end from the boot parameter struct given us by - * the boot loader. - */ -void __init -find_initrd (void) -{ -#ifdef CONFIG_BLK_DEV_INITRD - if (ia64_boot_param->initrd_start) { - initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); - initrd_end = initrd_start+ia64_boot_param->initrd_size; - - printk(KERN_INFO "Initial ramdisk at: 0x%lx (%llu bytes)\n", - initrd_start, ia64_boot_param->initrd_size); - } -#endif -} - -static void __init -io_port_init (void) -{ - unsigned long phys_iobase; - - /* - * Set `iobase' based on the EFI memory map or, failing that, the - * value firmware left in ar.k0. - * - * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute - * the port's virtual address, so ia32_load_state() loads it with a - * user virtual address. But in ia64 mode, glibc uses the - * *physical* address in ar.k0 to mmap the appropriate area from - * /dev/mem, and the inX()/outX() interfaces use MMIO. In both - * cases, user-mode can only use the legacy 0-64K I/O port space. - * - * ar.k0 is not involved in kernel I/O port accesses, which can use - * any of the I/O port spaces and are done via MMIO using the - * virtual mmio_base from the appropriate io_space[]. - */ - phys_iobase = efi_get_iobase(); - if (!phys_iobase) { - phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); - printk(KERN_INFO "No I/O port range found in EFI memory map, " - "falling back to AR.KR0 (0x%lx)\n", phys_iobase); - } - ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); - ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); - - /* setup legacy IO port space */ - io_space[0].mmio_base = ia64_iobase; - io_space[0].sparse = 1; - num_io_spaces = 1; -} - -/** - * early_console_setup - setup debugging console - * - * Consoles started here require little enough setup that we can start using - * them very early in the boot process, either right after the machine - * vector initialization, or even before if the drivers can detect their hw. - * - * Returns non-zero if a console couldn't be setup. - */ -static inline int __init -early_console_setup (char *cmdline) -{ -#ifdef CONFIG_EFI_PCDP - if (!efi_setup_pcdp_console(cmdline)) - return 0; -#endif - return -1; -} - -static void __init -screen_info_setup(void) -{ - unsigned int orig_x, orig_y, num_cols, num_rows, font_height; - - memset(&screen_info, 0, sizeof(screen_info)); - - if (!ia64_boot_param->console_info.num_rows || - !ia64_boot_param->console_info.num_cols) { - printk(KERN_WARNING "invalid screen-info, guessing 80x25\n"); - orig_x = 0; - orig_y = 0; - num_cols = 80; - num_rows = 25; - font_height = 16; - } else { - orig_x = ia64_boot_param->console_info.orig_x; - orig_y = ia64_boot_param->console_info.orig_y; - num_cols = ia64_boot_param->console_info.num_cols; - num_rows = ia64_boot_param->console_info.num_rows; - font_height = 400 / num_rows; - } - - screen_info.orig_x = orig_x; - screen_info.orig_y = orig_y; - screen_info.orig_video_cols = num_cols; - screen_info.orig_video_lines = num_rows; - screen_info.orig_video_points = font_height; - screen_info.orig_video_mode = 3; /* XXX fake */ - screen_info.orig_video_isVGA = 1; /* XXX fake */ - screen_info.orig_video_ega_bx = 3; /* XXX fake */ -} - -static inline void -mark_bsp_online (void) -{ -#ifdef CONFIG_SMP - /* If we register an early console, allow CPU 0 to printk */ - set_cpu_online(smp_processor_id(), true); -#endif -} - -static __initdata int nomca; -static __init int setup_nomca(char *s) -{ - nomca = 1; - return 0; -} -early_param("nomca", setup_nomca); - -void __init -setup_arch (char **cmdline_p) -{ - unw_init(); - - ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); - - *cmdline_p = __va(ia64_boot_param->command_line); - strscpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); - - efi_init(); - io_port_init(); - - uv_probe_system_type(); - parse_early_param(); - - if (early_console_setup(*cmdline_p) == 0) - mark_bsp_online(); - - /* Initialize the ACPI boot-time table parser */ - acpi_table_init(); - early_acpi_boot_init(); -#ifdef CONFIG_ACPI_NUMA - acpi_numa_init(); - acpi_numa_fixup(); -#ifdef CONFIG_ACPI_HOTPLUG_CPU - prefill_possible_map(); -#endif - per_cpu_scan_finalize((cpumask_empty(&early_cpu_possible_map) ? - 32 : cpumask_weight(&early_cpu_possible_map)), - additional_cpus > 0 ? additional_cpus : 0); -#endif /* CONFIG_ACPI_NUMA */ - -#ifdef CONFIG_SMP - smp_build_cpu_map(); -#endif - find_memory(); - - /* process SAL system table: */ - ia64_sal_init(__va(sal_systab_phys)); - -#ifdef CONFIG_ITANIUM - ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); -#else - { - unsigned long num_phys_stacked; - - if (ia64_pal_rse_info(&num_phys_stacked, 0) == 0 && num_phys_stacked > 96) - ia64_patch_rse((u64) __start___rse_patchlist, (u64) __end___rse_patchlist); - } -#endif - -#ifdef CONFIG_SMP - cpu_physical_id(0) = hard_smp_processor_id(); -#endif - - cpu_init(); /* initialize the bootstrap CPU */ - mmu_context_init(); /* initialize context_id bitmap */ - -#ifdef CONFIG_VT - if (!conswitchp) { -# if defined(CONFIG_VGA_CONSOLE) - /* - * Non-legacy systems may route legacy VGA MMIO range to system - * memory. vga_con probes the MMIO hole, so memory looks like - * a VGA device to it. The EFI memory map can tell us if it's - * memory so we can avoid this problem. - */ - if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) - conswitchp = &vga_con; -# endif - } -#endif - - /* enable IA-64 Machine Check Abort Handling unless disabled */ - if (!nomca) - ia64_mca_init(); - - /* - * Default to /dev/sda2. This assumes that the EFI partition - * is physical disk 1 partition 1 and the Linux root disk is - * physical disk 1 partition 2. - */ - ROOT_DEV = MKDEV(SCSI_DISK0_MAJOR, 2); - - if (is_uv_system()) - uv_setup(cmdline_p); -#ifdef CONFIG_SMP - else - init_smp_config(); -#endif - - screen_info_setup(); - paging_init(); - - clear_sched_clock_stable(); -} - -/* - * Display cpu info for all CPUs. - */ -static int -show_cpuinfo (struct seq_file *m, void *v) -{ -#ifdef CONFIG_SMP -# define lpj c->loops_per_jiffy -# define cpunum c->cpu -#else -# define lpj loops_per_jiffy -# define cpunum 0 -#endif - static struct { - unsigned long mask; - const char *feature_name; - } feature_bits[] = { - { 1UL << 0, "branchlong" }, - { 1UL << 1, "spontaneous deferral"}, - { 1UL << 2, "16-byte atomic ops" } - }; - char features[128], *cp, *sep; - struct cpuinfo_ia64 *c = v; - unsigned long mask; - unsigned long proc_freq; - int i, size; - - mask = c->features; - - /* build the feature string: */ - memcpy(features, "standard", 9); - cp = features; - size = sizeof(features); - sep = ""; - for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) { - if (mask & feature_bits[i].mask) { - cp += snprintf(cp, size, "%s%s", sep, - feature_bits[i].feature_name), - sep = ", "; - mask &= ~feature_bits[i].mask; - size = sizeof(features) - (cp - features); - } - } - if (mask && size > 1) { - /* print unknown features as a hex value */ - snprintf(cp, size, "%s0x%lx", sep, mask); - } - - proc_freq = cpufreq_quick_get(cpunum); - if (!proc_freq) - proc_freq = c->proc_freq / 1000; - - seq_printf(m, - "processor : %d\n" - "vendor : %s\n" - "arch : IA-64\n" - "family : %u\n" - "model : %u\n" - "model name : %s\n" - "revision : %u\n" - "archrev : %u\n" - "features : %s\n" - "cpu number : %lu\n" - "cpu regs : %u\n" - "cpu MHz : %lu.%03lu\n" - "itc MHz : %lu.%06lu\n" - "BogoMIPS : %lu.%02lu\n", - cpunum, c->vendor, c->family, c->model, - c->model_name, c->revision, c->archrev, - features, c->ppn, c->number, - proc_freq / 1000, proc_freq % 1000, - c->itc_freq / 1000000, c->itc_freq % 1000000, - lpj*HZ/500000, (lpj*HZ/5000) % 100); -#ifdef CONFIG_SMP - seq_printf(m, "siblings : %u\n", - cpumask_weight(&cpu_core_map[cpunum])); - if (c->socket_id != -1) - seq_printf(m, "physical id: %u\n", c->socket_id); - if (c->threads_per_core > 1 || c->cores_per_socket > 1) - seq_printf(m, - "core id : %u\n" - "thread id : %u\n", - c->core_id, c->thread_id); -#endif - seq_printf(m,"\n"); - - return 0; -} - -static void * -c_start (struct seq_file *m, loff_t *pos) -{ -#ifdef CONFIG_SMP - while (*pos < nr_cpu_ids && !cpu_online(*pos)) - ++*pos; -#endif - return *pos < nr_cpu_ids ? cpu_data(*pos) : NULL; -} - -static void * -c_next (struct seq_file *m, void *v, loff_t *pos) -{ - ++*pos; - return c_start(m, pos); -} - -static void -c_stop (struct seq_file *m, void *v) -{ -} - -const struct seq_operations cpuinfo_op = { - .start = c_start, - .next = c_next, - .stop = c_stop, - .show = show_cpuinfo -}; - -#define MAX_BRANDS 8 -static char brandname[MAX_BRANDS][128]; - -static char * -get_model_name(__u8 family, __u8 model) -{ - static int overflow; - char brand[128]; - int i; - - memcpy(brand, "Unknown", 8); - if (ia64_pal_get_brand_info(brand)) { - if (family == 0x7) - memcpy(brand, "Merced", 7); - else if (family == 0x1f) switch (model) { - case 0: memcpy(brand, "McKinley", 9); break; - case 1: memcpy(brand, "Madison", 8); break; - case 2: memcpy(brand, "Madison up to 9M cache", 23); break; - } - } - for (i = 0; i < MAX_BRANDS; i++) - if (strcmp(brandname[i], brand) == 0) - return brandname[i]; - for (i = 0; i < MAX_BRANDS; i++) - if (brandname[i][0] == '\0') - return strcpy(brandname[i], brand); - if (overflow++ == 0) - printk(KERN_ERR - "%s: Table overflow. Some processor model information will be missing\n", - __func__); - return "Unknown"; -} - -static void -identify_cpu (struct cpuinfo_ia64 *c) -{ - union { - unsigned long bits[5]; - struct { - /* id 0 & 1: */ - char vendor[16]; - - /* id 2 */ - u64 ppn; /* processor serial number */ - - /* id 3: */ - unsigned number : 8; - unsigned revision : 8; - unsigned model : 8; - unsigned family : 8; - unsigned archrev : 8; - unsigned reserved : 24; - - /* id 4: */ - u64 features; - } field; - } cpuid; - pal_vm_info_1_u_t vm1; - pal_vm_info_2_u_t vm2; - pal_status_t status; - unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ - int i; - for (i = 0; i < 5; ++i) - cpuid.bits[i] = ia64_get_cpuid(i); - - memcpy(c->vendor, cpuid.field.vendor, 16); -#ifdef CONFIG_SMP - c->cpu = smp_processor_id(); - - /* below default values will be overwritten by identify_siblings() - * for Multi-Threading/Multi-Core capable CPUs - */ - c->threads_per_core = c->cores_per_socket = c->num_log = 1; - c->socket_id = -1; - - identify_siblings(c); - - if (c->threads_per_core > smp_num_siblings) - smp_num_siblings = c->threads_per_core; -#endif - c->ppn = cpuid.field.ppn; - c->number = cpuid.field.number; - c->revision = cpuid.field.revision; - c->model = cpuid.field.model; - c->family = cpuid.field.family; - c->archrev = cpuid.field.archrev; - c->features = cpuid.field.features; - c->model_name = get_model_name(c->family, c->model); - - status = ia64_pal_vm_summary(&vm1, &vm2); - if (status == PAL_STATUS_SUCCESS) { - impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; - phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; - } - c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); - c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); -} - -/* - * Do the following calculations: - * - * 1. the max. cache line size. - * 2. the minimum of the i-cache stride sizes for "flush_icache_range()". - * 3. the minimum of the cache stride sizes for "clflush_cache_range()". - */ -static void -get_cache_info(void) -{ - unsigned long line_size, max = 1; - unsigned long l, levels, unique_caches; - pal_cache_config_info_t cci; - long status; - - status = ia64_pal_cache_summary(&levels, &unique_caches); - if (status != 0) { - printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", - __func__, status); - max = SMP_CACHE_BYTES; - /* Safest setup for "flush_icache_range()" */ - ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; - /* Safest setup for "clflush_cache_range()" */ - ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; - goto out; - } - - for (l = 0; l < levels; ++l) { - /* cache_type (data_or_unified)=2 */ - status = ia64_pal_cache_config_info(l, 2, &cci); - if (status != 0) { - printk(KERN_ERR "%s: ia64_pal_cache_config_info" - "(l=%lu, 2) failed (status=%ld)\n", - __func__, l, status); - max = SMP_CACHE_BYTES; - /* The safest setup for "flush_icache_range()" */ - cci.pcci_stride = I_CACHE_STRIDE_SHIFT; - /* The safest setup for "clflush_cache_range()" */ - ia64_cache_stride_shift = CACHE_STRIDE_SHIFT; - cci.pcci_unified = 1; - } else { - if (cci.pcci_stride < ia64_cache_stride_shift) - ia64_cache_stride_shift = cci.pcci_stride; - - line_size = 1 << cci.pcci_line_size; - if (line_size > max) - max = line_size; - } - - if (!cci.pcci_unified) { - /* cache_type (instruction)=1*/ - status = ia64_pal_cache_config_info(l, 1, &cci); - if (status != 0) { - printk(KERN_ERR "%s: ia64_pal_cache_config_info" - "(l=%lu, 1) failed (status=%ld)\n", - __func__, l, status); - /* The safest setup for flush_icache_range() */ - cci.pcci_stride = I_CACHE_STRIDE_SHIFT; - } - } - if (cci.pcci_stride < ia64_i_cache_stride_shift) - ia64_i_cache_stride_shift = cci.pcci_stride; - } - out: - if (max > ia64_max_cacheline_size) - ia64_max_cacheline_size = max; -} - -/* - * cpu_init() initializes state that is per-CPU. This function acts - * as a 'CPU state barrier', nothing should get across. - */ -void -cpu_init (void) -{ - extern void ia64_mmu_init(void *); - static unsigned long max_num_phys_stacked = IA64_NUM_PHYS_STACK_REG; - unsigned long num_phys_stacked; - pal_vm_info_2_u_t vmi; - unsigned int max_ctx; - struct cpuinfo_ia64 *cpu_info; - void *cpu_data; - - cpu_data = per_cpu_init(); -#ifdef CONFIG_SMP - /* - * insert boot cpu into sibling and core mapes - * (must be done after per_cpu area is setup) - */ - if (smp_processor_id() == 0) { - cpumask_set_cpu(0, &per_cpu(cpu_sibling_map, 0)); - cpumask_set_cpu(0, &cpu_core_map[0]); - } else { - /* - * Set ar.k3 so that assembly code in MCA handler can compute - * physical addresses of per cpu variables with a simple: - * phys = ar.k3 + &per_cpu_var - * and the alt-dtlb-miss handler can set per-cpu mapping into - * the TLB when needed. head.S already did this for cpu0. - */ - ia64_set_kr(IA64_KR_PER_CPU_DATA, - ia64_tpa(cpu_data) - (long) __per_cpu_start); - } -#endif - - get_cache_info(); - - /* - * We can't pass "local_cpu_data" to identify_cpu() because we haven't called - * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it - * depends on the data returned by identify_cpu(). We break the dependency by - * accessing cpu_data() through the canonical per-CPU address. - */ - cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(ia64_cpu_info) - __per_cpu_start); - identify_cpu(cpu_info); - -#ifdef CONFIG_MCKINLEY - { -# define FEATURE_SET 16 - struct ia64_pal_retval iprv; - - if (cpu_info->family == 0x1f) { - PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); - if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) - PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, - (iprv.v1 | 0x80), FEATURE_SET, 0); - } - } -#endif - - /* Clear the stack memory reserved for pt_regs: */ - memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); - - ia64_set_kr(IA64_KR_FPU_OWNER, 0); - - /* - * Initialize the page-table base register to a global - * directory with all zeroes. This ensure that we can handle - * TLB-misses to user address-space even before we created the - * first user address-space. This may happen, e.g., due to - * aggressive use of lfetch.fault. - */ - ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); - - /* - * Initialize default control register to defer speculative faults except - * for those arising from TLB misses, which are not deferred. The - * kernel MUST NOT depend on a particular setting of these bits (in other words, - * the kernel must have recovery code for all speculative accesses). Turn on - * dcr.lc as per recommendation by the architecture team. Most IA-32 apps - * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll - * be fine). - */ - ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR - | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); - mmgrab(&init_mm); - current->active_mm = &init_mm; - BUG_ON(current->mm); - - ia64_mmu_init(ia64_imva(cpu_data)); - ia64_mca_cpu_init(ia64_imva(cpu_data)); - - /* Clear ITC to eliminate sched_clock() overflows in human time. */ - ia64_set_itc(0); - - /* disable all local interrupt sources: */ - ia64_set_itv(1 << 16); - ia64_set_lrr0(1 << 16); - ia64_set_lrr1(1 << 16); - ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); - ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); - - /* clear TPR & XTP to enable all interrupt classes: */ - ia64_setreg(_IA64_REG_CR_TPR, 0); - - /* Clear any pending interrupts left by SAL/EFI */ - while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR) - ia64_eoi(); - -#ifdef CONFIG_SMP - normal_xtp(); -#endif - - /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ - if (ia64_pal_vm_summary(NULL, &vmi) == 0) { - max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; - setup_ptcg_sem(vmi.pal_vm_info_2_s.max_purges, NPTCG_FROM_PAL); - } else { - printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); - max_ctx = (1U << 15) - 1; /* use architected minimum */ - } - while (max_ctx < ia64_ctx.max_ctx) { - unsigned int old = ia64_ctx.max_ctx; - if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) - break; - } - - if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { - printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " - "stacked regs\n"); - num_phys_stacked = 96; - } - /* size of physical stacked register partition plus 8 bytes: */ - if (num_phys_stacked > max_num_phys_stacked) { - ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8); - max_num_phys_stacked = num_phys_stacked; - } -} - -void __init arch_cpu_finalize_init(void) -{ - ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, - (unsigned long) __end___mckinley_e9_bundles); -} - -static int __init run_dmi_scan(void) -{ - dmi_setup(); - return 0; -} -core_initcall(run_dmi_scan); |