+++ /dev/null
-/*
- * linux/arch/x86-64/kernel/setup.c
- *
- * Copyright (C) 1995 Linus Torvalds
- *
- * Nov 2001 Dave Jones <davej@suse.de>
- * Forked from i386 setup code.
- */
-
-/*
- * This file handles the architecture-dependent parts of initialization
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/a.out.h>
-#include <linux/screen_info.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/initrd.h>
-#include <linux/highmem.h>
-#include <linux/bootmem.h>
-#include <linux/module.h>
-#include <asm/processor.h>
-#include <linux/console.h>
-#include <linux/seq_file.h>
-#include <linux/crash_dump.h>
-#include <linux/root_dev.h>
-#include <linux/pci.h>
-#include <linux/acpi.h>
-#include <linux/kallsyms.h>
-#include <linux/edd.h>
-#include <linux/mmzone.h>
-#include <linux/kexec.h>
-#include <linux/cpufreq.h>
-#include <linux/dmi.h>
-#include <linux/dma-mapping.h>
-#include <linux/ctype.h>
-
-#include <asm/mtrr.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/msr.h>
-#include <asm/desc.h>
-#include <video/edid.h>
-#include <asm/e820.h>
-#include <asm/dma.h>
-#include <asm/mpspec.h>
-#include <asm/mmu_context.h>
-#include <asm/bootsetup.h>
-#include <asm/proto.h>
-#include <asm/setup.h>
-#include <asm/mach_apic.h>
-#include <asm/numa.h>
-#include <asm/sections.h>
-#include <asm/dmi.h>
-
-/*
- * Machine setup..
- */
-
-struct cpuinfo_x86 boot_cpu_data __read_mostly;
-EXPORT_SYMBOL(boot_cpu_data);
-
-unsigned long mmu_cr4_features;
-
-/* Boot loader ID as an integer, for the benefit of proc_dointvec */
-int bootloader_type;
-
-unsigned long saved_video_mode;
-
-int force_mwait __cpuinitdata;
-
-/*
- * Early DMI memory
- */
-int dmi_alloc_index;
-char dmi_alloc_data[DMI_MAX_DATA];
-
-/*
- * Setup options
- */
-struct screen_info screen_info;
-EXPORT_SYMBOL(screen_info);
-struct sys_desc_table_struct {
- unsigned short length;
- unsigned char table[0];
-};
-
-struct edid_info edid_info;
-EXPORT_SYMBOL_GPL(edid_info);
-
-extern int root_mountflags;
-
-char __initdata command_line[COMMAND_LINE_SIZE];
-
-struct resource standard_io_resources[] = {
- { .name = "dma1", .start = 0x00, .end = 0x1f,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "pic1", .start = 0x20, .end = 0x21,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "timer0", .start = 0x40, .end = 0x43,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "timer1", .start = 0x50, .end = 0x53,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "keyboard", .start = 0x60, .end = 0x6f,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "dma page reg", .start = 0x80, .end = 0x8f,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "pic2", .start = 0xa0, .end = 0xa1,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "dma2", .start = 0xc0, .end = 0xdf,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO },
- { .name = "fpu", .start = 0xf0, .end = 0xff,
- .flags = IORESOURCE_BUSY | IORESOURCE_IO }
-};
-
-#define IORESOURCE_RAM (IORESOURCE_BUSY | IORESOURCE_MEM)
-
-struct resource data_resource = {
- .name = "Kernel data",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_RAM,
-};
-struct resource code_resource = {
- .name = "Kernel code",
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_RAM,
-};
-
-#ifdef CONFIG_PROC_VMCORE
-/* elfcorehdr= specifies the location of elf core header
- * stored by the crashed kernel. This option will be passed
- * by kexec loader to the capture kernel.
- */
-static int __init setup_elfcorehdr(char *arg)
-{
- char *end;
- if (!arg)
- return -EINVAL;
- elfcorehdr_addr = memparse(arg, &end);
- return end > arg ? 0 : -EINVAL;
-}
-early_param("elfcorehdr", setup_elfcorehdr);
-#endif
-
-#ifndef CONFIG_NUMA
-static void __init
-contig_initmem_init(unsigned long start_pfn, unsigned long end_pfn)
-{
- unsigned long bootmap_size, bootmap;
-
- bootmap_size = bootmem_bootmap_pages(end_pfn)<<PAGE_SHIFT;
- bootmap = find_e820_area(0, end_pfn<<PAGE_SHIFT, bootmap_size);
- if (bootmap == -1L)
- panic("Cannot find bootmem map of size %ld\n",bootmap_size);
- bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, end_pfn);
- e820_register_active_regions(0, start_pfn, end_pfn);
- free_bootmem_with_active_regions(0, end_pfn);
- reserve_bootmem(bootmap, bootmap_size);
-}
-#endif
-
-#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
-struct edd edd;
-#ifdef CONFIG_EDD_MODULE
-EXPORT_SYMBOL(edd);
-#endif
-/**
- * copy_edd() - Copy the BIOS EDD information
- * from boot_params into a safe place.
- *
- */
-static inline void copy_edd(void)
-{
- memcpy(edd.mbr_signature, EDD_MBR_SIGNATURE, sizeof(edd.mbr_signature));
- memcpy(edd.edd_info, EDD_BUF, sizeof(edd.edd_info));
- edd.mbr_signature_nr = EDD_MBR_SIG_NR;
- edd.edd_info_nr = EDD_NR;
-}
-#else
-static inline void copy_edd(void)
-{
-}
-#endif
-
-#define EBDA_ADDR_POINTER 0x40E
-
-unsigned __initdata ebda_addr;
-unsigned __initdata ebda_size;
-
-static void discover_ebda(void)
-{
- /*
- * there is a real-mode segmented pointer pointing to the
- * 4K EBDA area at 0x40E
- */
- ebda_addr = *(unsigned short *)__va(EBDA_ADDR_POINTER);
- ebda_addr <<= 4;
-
- ebda_size = *(unsigned short *)__va(ebda_addr);
-
- /* Round EBDA up to pages */
- if (ebda_size == 0)
- ebda_size = 1;
- ebda_size <<= 10;
- ebda_size = round_up(ebda_size + (ebda_addr & ~PAGE_MASK), PAGE_SIZE);
- if (ebda_size > 64*1024)
- ebda_size = 64*1024;
-}
-
-void __init setup_arch(char **cmdline_p)
-{
- printk(KERN_INFO "Command line: %s\n", boot_command_line);
-
- ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
- screen_info = SCREEN_INFO;
- edid_info = EDID_INFO;
- saved_video_mode = SAVED_VIDEO_MODE;
- bootloader_type = LOADER_TYPE;
-
-#ifdef CONFIG_BLK_DEV_RAM
- rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
- rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
- rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
-#endif
- setup_memory_region();
- copy_edd();
-
- if (!MOUNT_ROOT_RDONLY)
- root_mountflags &= ~MS_RDONLY;
- init_mm.start_code = (unsigned long) &_text;
- init_mm.end_code = (unsigned long) &_etext;
- init_mm.end_data = (unsigned long) &_edata;
- init_mm.brk = (unsigned long) &_end;
-
- code_resource.start = virt_to_phys(&_text);
- code_resource.end = virt_to_phys(&_etext)-1;
- data_resource.start = virt_to_phys(&_etext);
- data_resource.end = virt_to_phys(&_edata)-1;
-
- early_identify_cpu(&boot_cpu_data);
-
- strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
- *cmdline_p = command_line;
-
- parse_early_param();
-
- finish_e820_parsing();
-
- e820_register_active_regions(0, 0, -1UL);
- /*
- * partially used pages are not usable - thus
- * we are rounding upwards:
- */
- end_pfn = e820_end_of_ram();
- num_physpages = end_pfn;
-
- check_efer();
-
- discover_ebda();
-
- init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
-
- dmi_scan_machine();
-
-#ifdef CONFIG_ACPI
- /*
- * Initialize the ACPI boot-time table parser (gets the RSDP and SDT).
- * Call this early for SRAT node setup.
- */
- acpi_boot_table_init();
-#endif
-
- /* How many end-of-memory variables you have, grandma! */
- max_low_pfn = end_pfn;
- max_pfn = end_pfn;
- high_memory = (void *)__va(end_pfn * PAGE_SIZE - 1) + 1;
-
- /* Remove active ranges so rediscovery with NUMA-awareness happens */
- remove_all_active_ranges();
-
-#ifdef CONFIG_ACPI_NUMA
- /*
- * Parse SRAT to discover nodes.
- */
- acpi_numa_init();
-#endif
-
-#ifdef CONFIG_NUMA
- numa_initmem_init(0, end_pfn);
-#else
- contig_initmem_init(0, end_pfn);
-#endif
-
- /* Reserve direct mapping */
- reserve_bootmem_generic(table_start << PAGE_SHIFT,
- (table_end - table_start) << PAGE_SHIFT);
-
- /* reserve kernel */
- reserve_bootmem_generic(__pa_symbol(&_text),
- __pa_symbol(&_end) - __pa_symbol(&_text));
-
- /*
- * reserve physical page 0 - it's a special BIOS page on many boxes,
- * enabling clean reboots, SMP operation, laptop functions.
- */
- reserve_bootmem_generic(0, PAGE_SIZE);
-
- /* reserve ebda region */
- if (ebda_addr)
- reserve_bootmem_generic(ebda_addr, ebda_size);
-#ifdef CONFIG_NUMA
- /* reserve nodemap region */
- if (nodemap_addr)
- reserve_bootmem_generic(nodemap_addr, nodemap_size);
-#endif
-
-#ifdef CONFIG_SMP
- /* Reserve SMP trampoline */
- reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, 2*PAGE_SIZE);
-#endif
-
-#ifdef CONFIG_ACPI_SLEEP
- /*
- * Reserve low memory region for sleep support.
- */
- acpi_reserve_bootmem();
-#endif
- /*
- * Find and reserve possible boot-time SMP configuration:
- */
- find_smp_config();
-#ifdef CONFIG_BLK_DEV_INITRD
- if (LOADER_TYPE && INITRD_START) {
- if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) {
- reserve_bootmem_generic(INITRD_START, INITRD_SIZE);
- initrd_start = INITRD_START + PAGE_OFFSET;
- initrd_end = initrd_start+INITRD_SIZE;
- }
- else {
- printk(KERN_ERR "initrd extends beyond end of memory "
- "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
- (unsigned long)(INITRD_START + INITRD_SIZE),
- (unsigned long)(end_pfn << PAGE_SHIFT));
- initrd_start = 0;
- }
- }
-#endif
-#ifdef CONFIG_KEXEC
- if (crashk_res.start != crashk_res.end) {
- reserve_bootmem_generic(crashk_res.start,
- crashk_res.end - crashk_res.start + 1);
- }
-#endif
-
- paging_init();
-
-#ifdef CONFIG_PCI
- early_quirks();
-#endif
-
- /*
- * set this early, so we dont allocate cpu0
- * if MADT list doesnt list BSP first
- * mpparse.c/MP_processor_info() allocates logical cpu numbers.
- */
- cpu_set(0, cpu_present_map);
-#ifdef CONFIG_ACPI
- /*
- * Read APIC and some other early information from ACPI tables.
- */
- acpi_boot_init();
-#endif
-
- init_cpu_to_node();
-
- /*
- * get boot-time SMP configuration:
- */
- if (smp_found_config)
- get_smp_config();
- init_apic_mappings();
-
- /*
- * We trust e820 completely. No explicit ROM probing in memory.
- */
- e820_reserve_resources();
- e820_mark_nosave_regions();
-
- {
- unsigned i;
- /* request I/O space for devices used on all i[345]86 PCs */
- for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
- request_resource(&ioport_resource, &standard_io_resources[i]);
- }
-
- e820_setup_gap();
-
-#ifdef CONFIG_VT
-#if defined(CONFIG_VGA_CONSOLE)
- conswitchp = &vga_con;
-#elif defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con;
-#endif
-#endif
-}
-
-static int __cpuinit get_model_name(struct cpuinfo_x86 *c)
-{
- unsigned int *v;
-
- if (c->extended_cpuid_level < 0x80000004)
- return 0;
-
- v = (unsigned int *) c->x86_model_id;
- cpuid(0x80000002, &v[0], &v[1], &v[2], &v[3]);
- cpuid(0x80000003, &v[4], &v[5], &v[6], &v[7]);
- cpuid(0x80000004, &v[8], &v[9], &v[10], &v[11]);
- c->x86_model_id[48] = 0;
- return 1;
-}
-
-
-static void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c)
-{
- unsigned int n, dummy, eax, ebx, ecx, edx;
-
- n = c->extended_cpuid_level;
-
- if (n >= 0x80000005) {
- cpuid(0x80000005, &dummy, &ebx, &ecx, &edx);
- printk(KERN_INFO "CPU: L1 I Cache: %dK (%d bytes/line), D cache %dK (%d bytes/line)\n",
- edx>>24, edx&0xFF, ecx>>24, ecx&0xFF);
- c->x86_cache_size=(ecx>>24)+(edx>>24);
- /* On K8 L1 TLB is inclusive, so don't count it */
- c->x86_tlbsize = 0;
- }
-
- if (n >= 0x80000006) {
- cpuid(0x80000006, &dummy, &ebx, &ecx, &edx);
- ecx = cpuid_ecx(0x80000006);
- c->x86_cache_size = ecx >> 16;
- c->x86_tlbsize += ((ebx >> 16) & 0xfff) + (ebx & 0xfff);
-
- printk(KERN_INFO "CPU: L2 Cache: %dK (%d bytes/line)\n",
- c->x86_cache_size, ecx & 0xFF);
- }
-
- if (n >= 0x80000007)
- cpuid(0x80000007, &dummy, &dummy, &dummy, &c->x86_power);
- if (n >= 0x80000008) {
- cpuid(0x80000008, &eax, &dummy, &dummy, &dummy);
- c->x86_virt_bits = (eax >> 8) & 0xff;
- c->x86_phys_bits = eax & 0xff;
- }
-}
-
-#ifdef CONFIG_NUMA
-static int nearby_node(int apicid)
-{
- int i;
- for (i = apicid - 1; i >= 0; i--) {
- int node = apicid_to_node[i];
- if (node != NUMA_NO_NODE && node_online(node))
- return node;
- }
- for (i = apicid + 1; i < MAX_LOCAL_APIC; i++) {
- int node = apicid_to_node[i];
- if (node != NUMA_NO_NODE && node_online(node))
- return node;
- }
- return first_node(node_online_map); /* Shouldn't happen */
-}
-#endif
-
-/*
- * On a AMD dual core setup the lower bits of the APIC id distingush the cores.
- * Assumes number of cores is a power of two.
- */
-static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
-{
-#ifdef CONFIG_SMP
- unsigned bits;
-#ifdef CONFIG_NUMA
- int cpu = smp_processor_id();
- int node = 0;
- unsigned apicid = hard_smp_processor_id();
-#endif
- unsigned ecx = cpuid_ecx(0x80000008);
-
- c->x86_max_cores = (ecx & 0xff) + 1;
-
- /* CPU telling us the core id bits shift? */
- bits = (ecx >> 12) & 0xF;
-
- /* Otherwise recompute */
- if (bits == 0) {
- while ((1 << bits) < c->x86_max_cores)
- bits++;
- }
-
- /* Low order bits define the core id (index of core in socket) */
- c->cpu_core_id = c->phys_proc_id & ((1 << bits)-1);
- /* Convert the APIC ID into the socket ID */
- c->phys_proc_id = phys_pkg_id(bits);
-
-#ifdef CONFIG_NUMA
- node = c->phys_proc_id;
- if (apicid_to_node[apicid] != NUMA_NO_NODE)
- node = apicid_to_node[apicid];
- if (!node_online(node)) {
- /* Two possibilities here:
- - The CPU is missing memory and no node was created.
- In that case try picking one from a nearby CPU
- - The APIC IDs differ from the HyperTransport node IDs
- which the K8 northbridge parsing fills in.
- Assume they are all increased by a constant offset,
- but in the same order as the HT nodeids.
- If that doesn't result in a usable node fall back to the
- path for the previous case. */
- int ht_nodeid = apicid - (cpu_data[0].phys_proc_id << bits);
- if (ht_nodeid >= 0 &&
- apicid_to_node[ht_nodeid] != NUMA_NO_NODE)
- node = apicid_to_node[ht_nodeid];
- /* Pick a nearby node */
- if (!node_online(node))
- node = nearby_node(apicid);
- }
- numa_set_node(cpu, node);
-
- printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node);
-#endif
-#endif
-}
-
-static void __cpuinit init_amd(struct cpuinfo_x86 *c)
-{
- unsigned level;
-
-#ifdef CONFIG_SMP
- unsigned long value;
-
- /*
- * Disable TLB flush filter by setting HWCR.FFDIS on K8
- * bit 6 of msr C001_0015
- *
- * Errata 63 for SH-B3 steppings
- * Errata 122 for all steppings (F+ have it disabled by default)
- */
- if (c->x86 == 15) {
- rdmsrl(MSR_K8_HWCR, value);
- value |= 1 << 6;
- wrmsrl(MSR_K8_HWCR, value);
- }
-#endif
-
- /* Bit 31 in normal CPUID used for nonstandard 3DNow ID;
- 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */
- clear_bit(0*32+31, &c->x86_capability);
-
- /* On C+ stepping K8 rep microcode works well for copy/memset */
- level = cpuid_eax(1);
- if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58))
- set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability);
- if (c->x86 == 0x10)
- set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability);
-
- /* Enable workaround for FXSAVE leak */
- if (c->x86 >= 6)
- set_bit(X86_FEATURE_FXSAVE_LEAK, &c->x86_capability);
-
- level = get_model_name(c);
- if (!level) {
- switch (c->x86) {
- case 15:
- /* Should distinguish Models here, but this is only
- a fallback anyways. */
- strcpy(c->x86_model_id, "Hammer");
- break;
- }
- }
- display_cacheinfo(c);
-
- /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */
- if (c->x86_power & (1<<8))
- set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability);
-
- /* Multi core CPU? */
- if (c->extended_cpuid_level >= 0x80000008)
- amd_detect_cmp(c);
-
- if (c->extended_cpuid_level >= 0x80000006 &&
- (cpuid_edx(0x80000006) & 0xf000))
- num_cache_leaves = 4;
- else
- num_cache_leaves = 3;
-
- if (c->x86 == 0xf || c->x86 == 0x10 || c->x86 == 0x11)
- set_bit(X86_FEATURE_K8, &c->x86_capability);
-
- /* RDTSC can be speculated around */
- clear_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability);
-
- /* Family 10 doesn't support C states in MWAIT so don't use it */
- if (c->x86 == 0x10 && !force_mwait)
- clear_bit(X86_FEATURE_MWAIT, &c->x86_capability);
-}
-
-static void __cpuinit detect_ht(struct cpuinfo_x86 *c)
-{
-#ifdef CONFIG_SMP
- u32 eax, ebx, ecx, edx;
- int index_msb, core_bits;
-
- cpuid(1, &eax, &ebx, &ecx, &edx);
-
-
- if (!cpu_has(c, X86_FEATURE_HT))
- return;
- if (cpu_has(c, X86_FEATURE_CMP_LEGACY))
- goto out;
-
- smp_num_siblings = (ebx & 0xff0000) >> 16;
-
- if (smp_num_siblings == 1) {
- printk(KERN_INFO "CPU: Hyper-Threading is disabled\n");
- } else if (smp_num_siblings > 1 ) {
-
- if (smp_num_siblings > NR_CPUS) {
- printk(KERN_WARNING "CPU: Unsupported number of the siblings %d", smp_num_siblings);
- smp_num_siblings = 1;
- return;
- }
-
- index_msb = get_count_order(smp_num_siblings);
- c->phys_proc_id = phys_pkg_id(index_msb);
-
- smp_num_siblings = smp_num_siblings / c->x86_max_cores;
-
- index_msb = get_count_order(smp_num_siblings) ;
-
- core_bits = get_count_order(c->x86_max_cores);
-
- c->cpu_core_id = phys_pkg_id(index_msb) &
- ((1 << core_bits) - 1);
- }
-out:
- if ((c->x86_max_cores * smp_num_siblings) > 1) {
- printk(KERN_INFO "CPU: Physical Processor ID: %d\n", c->phys_proc_id);
- printk(KERN_INFO "CPU: Processor Core ID: %d\n", c->cpu_core_id);
- }
-
-#endif
-}
-
-/*
- * find out the number of processor cores on the die
- */
-static int __cpuinit intel_num_cpu_cores(struct cpuinfo_x86 *c)
-{
- unsigned int eax, t;
-
- if (c->cpuid_level < 4)
- return 1;
-
- cpuid_count(4, 0, &eax, &t, &t, &t);
-
- if (eax & 0x1f)
- return ((eax >> 26) + 1);
- else
- return 1;
-}
-
-static void srat_detect_node(void)
-{
-#ifdef CONFIG_NUMA
- unsigned node;
- int cpu = smp_processor_id();
- int apicid = hard_smp_processor_id();
-
- /* Don't do the funky fallback heuristics the AMD version employs
- for now. */
- node = apicid_to_node[apicid];
- if (node == NUMA_NO_NODE)
- node = first_node(node_online_map);
- numa_set_node(cpu, node);
-
- printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node);
-#endif
-}
-
-static void __cpuinit init_intel(struct cpuinfo_x86 *c)
-{
- /* Cache sizes */
- unsigned n;
-
- init_intel_cacheinfo(c);
- if (c->cpuid_level > 9 ) {
- unsigned eax = cpuid_eax(10);
- /* Check for version and the number of counters */
- if ((eax & 0xff) && (((eax>>8) & 0xff) > 1))
- set_bit(X86_FEATURE_ARCH_PERFMON, &c->x86_capability);
- }
-
- if (cpu_has_ds) {
- unsigned int l1, l2;
- rdmsr(MSR_IA32_MISC_ENABLE, l1, l2);
- if (!(l1 & (1<<11)))
- set_bit(X86_FEATURE_BTS, c->x86_capability);
- if (!(l1 & (1<<12)))
- set_bit(X86_FEATURE_PEBS, c->x86_capability);
- }
-
- n = c->extended_cpuid_level;
- if (n >= 0x80000008) {
- unsigned eax = cpuid_eax(0x80000008);
- c->x86_virt_bits = (eax >> 8) & 0xff;
- c->x86_phys_bits = eax & 0xff;
- /* CPUID workaround for Intel 0F34 CPU */
- if (c->x86_vendor == X86_VENDOR_INTEL &&
- c->x86 == 0xF && c->x86_model == 0x3 &&
- c->x86_mask == 0x4)
- c->x86_phys_bits = 36;
- }
-
- if (c->x86 == 15)
- c->x86_cache_alignment = c->x86_clflush_size * 2;
- if ((c->x86 == 0xf && c->x86_model >= 0x03) ||
- (c->x86 == 0x6 && c->x86_model >= 0x0e))
- set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability);
- if (c->x86 == 6)
- set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability);
- if (c->x86 == 15)
- set_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability);
- else
- clear_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability);
- c->x86_max_cores = intel_num_cpu_cores(c);
-
- srat_detect_node();
-}
-
-static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c)
-{
- char *v = c->x86_vendor_id;
-
- if (!strcmp(v, "AuthenticAMD"))
- c->x86_vendor = X86_VENDOR_AMD;
- else if (!strcmp(v, "GenuineIntel"))
- c->x86_vendor = X86_VENDOR_INTEL;
- else
- c->x86_vendor = X86_VENDOR_UNKNOWN;
-}
-
-struct cpu_model_info {
- int vendor;
- int family;
- char *model_names[16];
-};
-
-/* Do some early cpuid on the boot CPU to get some parameter that are
- needed before check_bugs. Everything advanced is in identify_cpu
- below. */
-void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c)
-{
- u32 tfms;
-
- c->loops_per_jiffy = loops_per_jiffy;
- c->x86_cache_size = -1;
- c->x86_vendor = X86_VENDOR_UNKNOWN;
- c->x86_model = c->x86_mask = 0; /* So far unknown... */
- c->x86_vendor_id[0] = '\0'; /* Unset */
- c->x86_model_id[0] = '\0'; /* Unset */
- c->x86_clflush_size = 64;
- c->x86_cache_alignment = c->x86_clflush_size;
- c->x86_max_cores = 1;
- c->extended_cpuid_level = 0;
- memset(&c->x86_capability, 0, sizeof c->x86_capability);
-
- /* Get vendor name */
- cpuid(0x00000000, (unsigned int *)&c->cpuid_level,
- (unsigned int *)&c->x86_vendor_id[0],
- (unsigned int *)&c->x86_vendor_id[8],
- (unsigned int *)&c->x86_vendor_id[4]);
-
- get_cpu_vendor(c);
-
- /* Initialize the standard set of capabilities */
- /* Note that the vendor-specific code below might override */
-
- /* Intel-defined flags: level 0x00000001 */
- if (c->cpuid_level >= 0x00000001) {
- __u32 misc;
- cpuid(0x00000001, &tfms, &misc, &c->x86_capability[4],
- &c->x86_capability[0]);
- c->x86 = (tfms >> 8) & 0xf;
- c->x86_model = (tfms >> 4) & 0xf;
- c->x86_mask = tfms & 0xf;
- if (c->x86 == 0xf)
- c->x86 += (tfms >> 20) & 0xff;
- if (c->x86 >= 0x6)
- c->x86_model += ((tfms >> 16) & 0xF) << 4;
- if (c->x86_capability[0] & (1<<19))
- c->x86_clflush_size = ((misc >> 8) & 0xff) * 8;
- } else {
- /* Have CPUID level 0 only - unheard of */
- c->x86 = 4;
- }
-
-#ifdef CONFIG_SMP
- c->phys_proc_id = (cpuid_ebx(1) >> 24) & 0xff;
-#endif
-}
-
-/*
- * This does the hard work of actually picking apart the CPU stuff...
- */
-void __cpuinit identify_cpu(struct cpuinfo_x86 *c)
-{
- int i;
- u32 xlvl;
-
- early_identify_cpu(c);
-
- /* AMD-defined flags: level 0x80000001 */
- xlvl = cpuid_eax(0x80000000);
- c->extended_cpuid_level = xlvl;
- if ((xlvl & 0xffff0000) == 0x80000000) {
- if (xlvl >= 0x80000001) {
- c->x86_capability[1] = cpuid_edx(0x80000001);
- c->x86_capability[6] = cpuid_ecx(0x80000001);
- }
- if (xlvl >= 0x80000004)
- get_model_name(c); /* Default name */
- }
-
- /* Transmeta-defined flags: level 0x80860001 */
- xlvl = cpuid_eax(0x80860000);
- if ((xlvl & 0xffff0000) == 0x80860000) {
- /* Don't set x86_cpuid_level here for now to not confuse. */
- if (xlvl >= 0x80860001)
- c->x86_capability[2] = cpuid_edx(0x80860001);
- }
-
- init_scattered_cpuid_features(c);
-
- c->apicid = phys_pkg_id(0);
-
- /*
- * Vendor-specific initialization. In this section we
- * canonicalize the feature flags, meaning if there are
- * features a certain CPU supports which CPUID doesn't
- * tell us, CPUID claiming incorrect flags, or other bugs,
- * we handle them here.
- *
- * At the end of this section, c->x86_capability better
- * indicate the features this CPU genuinely supports!
- */
- switch (c->x86_vendor) {
- case X86_VENDOR_AMD:
- init_amd(c);
- break;
-
- case X86_VENDOR_INTEL:
- init_intel(c);
- break;
-
- case X86_VENDOR_UNKNOWN:
- default:
- display_cacheinfo(c);
- break;
- }
-
- select_idle_routine(c);
- detect_ht(c);
-
- /*
- * On SMP, boot_cpu_data holds the common feature set between
- * all CPUs; so make sure that we indicate which features are
- * common between the CPUs. The first time this routine gets
- * executed, c == &boot_cpu_data.
- */
- if (c != &boot_cpu_data) {
- /* AND the already accumulated flags with these */
- for (i = 0 ; i < NCAPINTS ; i++)
- boot_cpu_data.x86_capability[i] &= c->x86_capability[i];
- }
-
-#ifdef CONFIG_X86_MCE
- mcheck_init(c);
-#endif
- if (c != &boot_cpu_data)
- mtrr_ap_init();
-#ifdef CONFIG_NUMA
- numa_add_cpu(smp_processor_id());
-#endif
-}
-
-
-void __cpuinit print_cpu_info(struct cpuinfo_x86 *c)
-{
- if (c->x86_model_id[0])
- printk("%s", c->x86_model_id);
-
- if (c->x86_mask || c->cpuid_level >= 0)
- printk(" stepping %02x\n", c->x86_mask);
- else
- printk("\n");
-}
-
-/*
- * Get CPU information for use by the procfs.
- */
-
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
- struct cpuinfo_x86 *c = v;
-
- /*
- * These flag bits must match the definitions in <asm/cpufeature.h>.
- * NULL means this bit is undefined or reserved; either way it doesn't
- * have meaning as far as Linux is concerned. Note that it's important
- * to realize there is a difference between this table and CPUID -- if
- * applications want to get the raw CPUID data, they should access
- * /dev/cpu/<cpu_nr>/cpuid instead.
- */
- static char *x86_cap_flags[] = {
- /* Intel-defined */
- "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
- "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov",
- "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx",
- "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", "pbe",
-
- /* AMD-defined */
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, "nx", NULL, "mmxext", NULL,
- NULL, "fxsr_opt", "pdpe1gb", "rdtscp", NULL, "lm",
- "3dnowext", "3dnow",
-
- /* Transmeta-defined */
- "recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Other (Linux-defined) */
- "cxmmx", "k6_mtrr", "cyrix_arr", "centaur_mcr",
- NULL, NULL, NULL, NULL,
- "constant_tsc", "up", NULL, "arch_perfmon",
- "pebs", "bts", NULL, "sync_rdtsc",
- "rep_good", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Intel-defined (#2) */
- "pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
- "tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
- NULL, NULL, "dca", NULL, NULL, NULL, NULL, "popcnt",
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* VIA/Cyrix/Centaur-defined */
- NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en",
- "ace2", "ace2_en", "phe", "phe_en", "pmm", "pmm_en", NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* AMD-defined (#2) */
- "lahf_lm", "cmp_legacy", "svm", "extapic", "cr8_legacy",
- "altmovcr8", "abm", "sse4a",
- "misalignsse", "3dnowprefetch",
- "osvw", "ibs", NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
-
- /* Auxiliary (Linux-defined) */
- "ida", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- };
- static char *x86_power_flags[] = {
- "ts", /* temperature sensor */
- "fid", /* frequency id control */
- "vid", /* voltage id control */
- "ttp", /* thermal trip */
- "tm",
- "stc",
- "100mhzsteps",
- "hwpstate",
- "", /* tsc invariant mapped to constant_tsc */
- /* nothing */
- };
-
-
-#ifdef CONFIG_SMP
- if (!cpu_online(c-cpu_data))
- return 0;
-#endif
-
- seq_printf(m,"processor\t: %u\n"
- "vendor_id\t: %s\n"
- "cpu family\t: %d\n"
- "model\t\t: %d\n"
- "model name\t: %s\n",
- (unsigned)(c-cpu_data),
- c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown",
- c->x86,
- (int)c->x86_model,
- c->x86_model_id[0] ? c->x86_model_id : "unknown");
-
- if (c->x86_mask || c->cpuid_level >= 0)
- seq_printf(m, "stepping\t: %d\n", c->x86_mask);
- else
- seq_printf(m, "stepping\t: unknown\n");
-
- if (cpu_has(c,X86_FEATURE_TSC)) {
- unsigned int freq = cpufreq_quick_get((unsigned)(c-cpu_data));
- if (!freq)
- freq = cpu_khz;
- seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
- freq / 1000, (freq % 1000));
- }
-
- /* Cache size */
- if (c->x86_cache_size >= 0)
- seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size);
-
-#ifdef CONFIG_SMP
- if (smp_num_siblings * c->x86_max_cores > 1) {
- int cpu = c - cpu_data;
- seq_printf(m, "physical id\t: %d\n", c->phys_proc_id);
- seq_printf(m, "siblings\t: %d\n", cpus_weight(cpu_core_map[cpu]));
- seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id);
- seq_printf(m, "cpu cores\t: %d\n", c->booted_cores);
- }
-#endif
-
- seq_printf(m,
- "fpu\t\t: yes\n"
- "fpu_exception\t: yes\n"
- "cpuid level\t: %d\n"
- "wp\t\t: yes\n"
- "flags\t\t:",
- c->cpuid_level);
-
- {
- int i;
- for ( i = 0 ; i < 32*NCAPINTS ; i++ )
- if (cpu_has(c, i) && x86_cap_flags[i] != NULL)
- seq_printf(m, " %s", x86_cap_flags[i]);
- }
-
- seq_printf(m, "\nbogomips\t: %lu.%02lu\n",
- c->loops_per_jiffy/(500000/HZ),
- (c->loops_per_jiffy/(5000/HZ)) % 100);
-
- if (c->x86_tlbsize > 0)
- seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize);
- seq_printf(m, "clflush size\t: %d\n", c->x86_clflush_size);
- seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment);
-
- seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n",
- c->x86_phys_bits, c->x86_virt_bits);
-
- seq_printf(m, "power management:");
- {
- unsigned i;
- for (i = 0; i < 32; i++)
- if (c->x86_power & (1 << i)) {
- if (i < ARRAY_SIZE(x86_power_flags) &&
- x86_power_flags[i])
- seq_printf(m, "%s%s",
- x86_power_flags[i][0]?" ":"",
- x86_power_flags[i]);
- else
- seq_printf(m, " [%d]", i);
- }
- }
-
- seq_printf(m, "\n\n");
-
- return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- return *pos < NR_CPUS ? 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)
-{
-}
-
-struct seq_operations cpuinfo_op = {
- .start =c_start,
- .next = c_next,
- .stop = c_stop,
- .show = show_cpuinfo,
-};
git.openpandora.org / pandora-kernel.git / blobdiff