diff options
Diffstat (limited to 'arch/x86/kernel/setup_64.c')
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 624 |
1 files changed, 306 insertions, 318 deletions
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 30d94d1d5f5..c8939dfddfb 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -30,6 +30,7 @@ #include <linux/crash_dump.h> #include <linux/root_dev.h> #include <linux/pci.h> +#include <linux/efi.h> #include <linux/acpi.h> #include <linux/kallsyms.h> #include <linux/edd.h> @@ -39,10 +40,13 @@ #include <linux/dmi.h> #include <linux/dma-mapping.h> #include <linux/ctype.h> +#include <linux/uaccess.h> +#include <linux/init_ohci1394_dma.h> #include <asm/mtrr.h> #include <asm/uaccess.h> #include <asm/system.h> +#include <asm/vsyscall.h> #include <asm/io.h> #include <asm/smp.h> #include <asm/msr.h> @@ -50,6 +54,7 @@ #include <video/edid.h> #include <asm/e820.h> #include <asm/dma.h> +#include <asm/gart.h> #include <asm/mpspec.h> #include <asm/mmu_context.h> #include <asm/proto.h> @@ -59,6 +64,15 @@ #include <asm/sections.h> #include <asm/dmi.h> #include <asm/cacheflush.h> +#include <asm/mce.h> +#include <asm/ds.h> +#include <asm/topology.h> + +#ifdef CONFIG_PARAVIRT +#include <asm/paravirt.h> +#else +#define ARCH_SETUP +#endif /* * Machine setup.. @@ -67,6 +81,8 @@ struct cpuinfo_x86 boot_cpu_data __read_mostly; EXPORT_SYMBOL(boot_cpu_data); +__u32 cleared_cpu_caps[NCAPINTS] __cpuinitdata; + unsigned long mmu_cr4_features; /* Boot loader ID as an integer, for the benefit of proc_dointvec */ @@ -76,7 +92,7 @@ unsigned long saved_video_mode; int force_mwait __cpuinitdata; -/* +/* * Early DMI memory */ int dmi_alloc_index; @@ -122,25 +138,27 @@ struct resource standard_io_resources[] = { #define IORESOURCE_RAM (IORESOURCE_BUSY | IORESOURCE_MEM) -struct resource data_resource = { +static struct resource data_resource = { .name = "Kernel data", .start = 0, .end = 0, .flags = IORESOURCE_RAM, }; -struct resource code_resource = { +static struct resource code_resource = { .name = "Kernel code", .start = 0, .end = 0, .flags = IORESOURCE_RAM, }; -struct resource bss_resource = { +static struct resource bss_resource = { .name = "Kernel bss", .start = 0, .end = 0, .flags = IORESOURCE_RAM, }; +static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c); + #ifdef CONFIG_PROC_VMCORE /* elfcorehdr= specifies the location of elf core header * stored by the crashed kernel. This option will be passed @@ -164,14 +182,15 @@ 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); + bootmap = find_e820_area(0, end_pfn<<PAGE_SHIFT, bootmap_size, + PAGE_SIZE); if (bootmap == -1L) - panic("Cannot find bootmem map of size %ld\n",bootmap_size); + 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) @@ -205,7 +224,8 @@ static void __init reserve_crashkernel(void) unsigned long long crash_size, crash_base; int ret; - free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; + free_mem = + ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; ret = parse_crashkernel(boot_command_line, free_mem, &crash_size, &crash_base); @@ -229,33 +249,21 @@ static inline void __init reserve_crashkernel(void) {} #endif -#define EBDA_ADDR_POINTER 0x40E - -unsigned __initdata ebda_addr; -unsigned __initdata ebda_size; - -static void discover_ebda(void) +/* Overridden in paravirt.c if CONFIG_PARAVIRT */ +void __attribute__((weak)) __init memory_setup(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; + machine_specific_memory_setup(); } +/* + * setup_arch - architecture-specific boot-time initializations + * + * Note: On x86_64, fixmaps are ready for use even before this is called. + */ void __init setup_arch(char **cmdline_p) { + unsigned i; + printk(KERN_INFO "Command line: %s\n", boot_command_line); ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); @@ -269,7 +277,15 @@ void __init setup_arch(char **cmdline_p) rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); #endif - setup_memory_region(); +#ifdef CONFIG_EFI + if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, + "EL64", 4)) + efi_enabled = 1; +#endif + + ARCH_SETUP + + memory_setup(); copy_edd(); if (!boot_params.hdr.root_flags) @@ -293,27 +309,47 @@ void __init setup_arch(char **cmdline_p) parse_early_param(); +#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT + if (init_ohci1394_dma_early) + init_ohci1394_dma_on_all_controllers(); +#endif + finish_e820_parsing(); + early_gart_iommu_check(); + e820_register_active_regions(0, 0, -1UL); /* * partially used pages are not usable - thus * we are rounding upwards: */ end_pfn = e820_end_of_ram(); + /* update e820 for memory not covered by WB MTRRs */ + mtrr_bp_init(); + if (mtrr_trim_uncached_memory(end_pfn)) { + e820_register_active_regions(0, 0, -1UL); + end_pfn = e820_end_of_ram(); + } + num_physpages = end_pfn; check_efer(); - discover_ebda(); - init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT)); + if (efi_enabled) + efi_init(); dmi_scan_machine(); + io_delay_init(); + #ifdef CONFIG_SMP - /* setup to use the static apicid table during kernel startup */ - x86_cpu_to_apicid_ptr = (void *)&x86_cpu_to_apicid_init; + /* setup to use the early static init tables during kernel startup */ + x86_cpu_to_apicid_early_ptr = (void *)x86_cpu_to_apicid_init; + x86_bios_cpu_apicid_early_ptr = (void *)x86_bios_cpu_apicid_init; +#ifdef CONFIG_NUMA + x86_cpu_to_node_map_early_ptr = (void *)x86_cpu_to_node_map_init; +#endif #endif #ifdef CONFIG_ACPI @@ -340,48 +376,26 @@ void __init setup_arch(char **cmdline_p) #endif #ifdef CONFIG_NUMA - numa_initmem_init(0, end_pfn); + 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)); + early_res_to_bootmem(); +#ifdef CONFIG_ACPI_SLEEP /* - * reserve physical page 0 - it's a special BIOS page on many boxes, - * enabling clean reboots, SMP operation, laptop functions. + * Reserve low memory region for sleep support. */ - 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); + acpi_reserve_bootmem(); #endif -#ifdef CONFIG_SMP - /* Reserve SMP trampoline */ - reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, 2*PAGE_SIZE); -#endif + if (efi_enabled) + efi_reserve_bootmem(); -#ifdef CONFIG_ACPI_SLEEP /* - * Reserve low memory region for sleep support. - */ - acpi_reserve_bootmem(); -#endif - /* - * Find and reserve possible boot-time SMP configuration: - */ + * Find and reserve possible boot-time SMP configuration: + */ find_smp_config(); #ifdef CONFIG_BLK_DEV_INITRD if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { @@ -395,6 +409,8 @@ void __init setup_arch(char **cmdline_p) initrd_start = ramdisk_image + PAGE_OFFSET; initrd_end = initrd_start+ramdisk_size; } else { + /* Assumes everything on node 0 */ + free_bootmem(ramdisk_image, ramdisk_size); printk(KERN_ERR "initrd extends beyond end of memory " "(0x%08lx > 0x%08lx)\ndisabling initrd\n", ramdisk_end, end_of_mem); @@ -404,17 +420,10 @@ void __init setup_arch(char **cmdline_p) #endif reserve_crashkernel(); paging_init(); + map_vsyscall(); -#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. @@ -430,25 +439,24 @@ void __init setup_arch(char **cmdline_p) if (smp_found_config) get_smp_config(); init_apic_mappings(); + ioapic_init_mappings(); /* * We trust e820 completely. No explicit ROM probing in memory. - */ - e820_reserve_resources(); + */ + e820_reserve_resources(&code_resource, &data_resource, &bss_resource); 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; + if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) + conswitchp = &vga_con; #elif defined(CONFIG_DUMMY_CONSOLE) conswitchp = &dummy_con; #endif @@ -479,9 +487,10 @@ static void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c) 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); + 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; } @@ -495,11 +504,8 @@ static void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c) 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); + cpuid(0x80000008, &eax, &dummy, &dummy, &dummy); c->x86_virt_bits = (eax >> 8) & 0xff; c->x86_phys_bits = eax & 0xff; } @@ -508,14 +514,15 @@ static void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c) #ifdef CONFIG_NUMA static int nearby_node(int apicid) { - int i; + int i, node; + for (i = apicid - 1; i >= 0; i--) { - int node = apicid_to_node[i]; + 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]; + node = apicid_to_node[i]; if (node != NUMA_NO_NODE && node_online(node)) return node; } @@ -527,7 +534,7 @@ static int nearby_node(int apicid) * 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) +static void __cpuinit amd_detect_cmp(struct cpuinfo_x86 *c) { #ifdef CONFIG_SMP unsigned bits; @@ -536,7 +543,54 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c) int node = 0; unsigned apicid = hard_smp_processor_id(); #endif - unsigned ecx = cpuid_ecx(0x80000008); + bits = c->x86_coreid_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 early_init_amd_mc(struct cpuinfo_x86 *c) +{ +#ifdef CONFIG_SMP + unsigned bits, ecx; + + /* Multi core CPU? */ + if (c->extended_cpuid_level < 0x80000008) + return; + + ecx = cpuid_ecx(0x80000008); c->x86_max_cores = (ecx & 0xff) + 1; @@ -549,37 +603,8 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c) 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); + c->x86_coreid_bits = bits; - printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node); -#endif #endif } @@ -595,8 +620,8 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c) /* AMD systems with C1E don't have a working lAPIC timer. Check for that. */ static __cpuinit int amd_apic_timer_broken(void) { - u32 lo, hi; - u32 eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE); + u32 lo, hi, eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE); + switch (eax & CPUID_XFAM) { case CPUID_XFAM_K8: if ((eax & CPUID_XMOD) < CPUID_XMOD_REV_F) @@ -614,6 +639,15 @@ static __cpuinit int amd_apic_timer_broken(void) return 0; } +static void __cpuinit early_init_amd(struct cpuinfo_x86 *c) +{ + early_init_amd_mc(c); + + /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */ + if (c->x86_power & (1<<8)) + set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); +} + static void __cpuinit init_amd(struct cpuinfo_x86 *c) { unsigned level; @@ -624,7 +658,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) /* * 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) */ @@ -637,35 +671,32 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) /* 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); - + clear_bit(0*32+31, (unsigned long *)&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 == 15 && ((level >= 0x0f48 && level < 0x0f50) || + level >= 0x0f58)) + set_cpu_cap(c, X86_FEATURE_REP_GOOD); if (c->x86 == 0x10 || c->x86 == 0x11) - set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability); + set_cpu_cap(c, X86_FEATURE_REP_GOOD); /* Enable workaround for FXSAVE leak */ if (c->x86 >= 6) - set_bit(X86_FEATURE_FXSAVE_LEAK, &c->x86_capability); + set_cpu_cap(c, X86_FEATURE_FXSAVE_LEAK); level = get_model_name(c); if (!level) { - switch (c->x86) { + switch (c->x86) { case 15: /* Should distinguish Models here, but this is only a fallback anyways. */ strcpy(c->x86_model_id, "Hammer"); - break; - } - } + 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); @@ -677,41 +708,38 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) 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); + set_cpu_cap(c, X86_FEATURE_K8); - /* 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); + /* MFENCE stops RDTSC speculation */ + set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC); if (amd_apic_timer_broken()) disable_apic_timer = 1; } -static void __cpuinit detect_ht(struct cpuinfo_x86 *c) +void __cpuinit detect_ht(struct cpuinfo_x86 *c) { #ifdef CONFIG_SMP - u32 eax, ebx, ecx, edx; - int index_msb, core_bits; + 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)) + 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 ) { + } 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); + printk(KERN_WARNING "CPU: Unsupported number of " + "siblings %d", smp_num_siblings); smp_num_siblings = 1; return; } @@ -721,7 +749,7 @@ static void __cpuinit detect_ht(struct cpuinfo_x86 *c) smp_num_siblings = smp_num_siblings / c->x86_max_cores; - index_msb = get_count_order(smp_num_siblings) ; + index_msb = get_count_order(smp_num_siblings); core_bits = get_count_order(c->x86_max_cores); @@ -730,8 +758,10 @@ static void __cpuinit detect_ht(struct cpuinfo_x86 *c) } 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); + 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 @@ -773,28 +803,39 @@ static void srat_detect_node(void) #endif } +static void __cpuinit early_init_intel(struct cpuinfo_x86 *c) +{ + if ((c->x86 == 0xf && c->x86_model >= 0x03) || + (c->x86 == 0x6 && c->x86_model >= 0x0e)) + set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability); +} + static void __cpuinit init_intel(struct cpuinfo_x86 *c) { /* Cache sizes */ unsigned n; init_intel_cacheinfo(c); - if (c->cpuid_level > 9 ) { + 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); + set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON); } 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); + set_cpu_cap(c, X86_FEATURE_BTS); if (!(l1 & (1<<12))) - set_bit(X86_FEATURE_PEBS, c->x86_capability); + set_cpu_cap(c, X86_FEATURE_PEBS); } + + if (cpu_has_bts) + ds_init_intel(c); + n = c->extended_cpuid_level; if (n >= 0x80000008) { unsigned eax = cpuid_eax(0x80000008); @@ -811,14 +852,11 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c) 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); + set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); 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); + set_cpu_cap(c, X86_FEATURE_REP_GOOD); + set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC); + c->x86_max_cores = intel_num_cpu_cores(c); srat_detect_node(); } @@ -835,18 +873,12 @@ static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c) 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) +static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c) { - u32 tfms; + u32 tfms, xlvl; c->loops_per_jiffy = loops_per_jiffy; c->x86_cache_size = -1; @@ -857,6 +889,7 @@ void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c) c->x86_clflush_size = 64; c->x86_cache_alignment = c->x86_clflush_size; c->x86_max_cores = 1; + c->x86_coreid_bits = 0; c->extended_cpuid_level = 0; memset(&c->x86_capability, 0, sizeof c->x86_capability); @@ -865,7 +898,7 @@ void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c) (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 */ @@ -883,7 +916,7 @@ void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c) c->x86 += (tfms >> 20) & 0xff; if (c->x86 >= 0x6) c->x86_model += ((tfms >> 16) & 0xF) << 4; - if (c->x86_capability[0] & (1<<19)) + if (c->x86_capability[0] & (1<<19)) c->x86_clflush_size = ((misc >> 8) & 0xff) * 8; } else { /* Have CPUID level 0 only - unheard of */ @@ -893,18 +926,6 @@ void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c) #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; @@ -925,6 +946,30 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c) c->x86_capability[2] = cpuid_edx(0x80860001); } + c->extended_cpuid_level = cpuid_eax(0x80000000); + if (c->extended_cpuid_level >= 0x80000007) + c->x86_power = cpuid_edx(0x80000007); + + switch (c->x86_vendor) { + case X86_VENDOR_AMD: + early_init_amd(c); + break; + case X86_VENDOR_INTEL: + early_init_intel(c); + break; + } + +} + +/* + * This does the hard work of actually picking apart the CPU stuff... + */ +void __cpuinit identify_cpu(struct cpuinfo_x86 *c) +{ + int i; + + early_identify_cpu(c); + init_scattered_cpuid_features(c); c->apicid = phys_pkg_id(0); @@ -954,8 +999,7 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c) break; } - select_idle_routine(c); - detect_ht(c); + detect_ht(c); /* * On SMP, boot_cpu_data holds the common feature set between @@ -965,31 +1009,55 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c) */ if (c != &boot_cpu_data) { /* AND the already accumulated flags with these */ - for (i = 0 ; i < NCAPINTS ; i++) + for (i = 0; i < NCAPINTS; i++) boot_cpu_data.x86_capability[i] &= c->x86_capability[i]; } + /* Clear all flags overriden by options */ + for (i = 0; i < NCAPINTS; i++) + c->x86_capability[i] ^= cleared_cpu_caps[i]; + #ifdef CONFIG_X86_MCE mcheck_init(c); #endif + select_idle_routine(c); + if (c != &boot_cpu_data) mtrr_ap_init(); #ifdef CONFIG_NUMA numa_add_cpu(smp_processor_id()); #endif + } - + +static __init int setup_noclflush(char *arg) +{ + setup_clear_cpu_cap(X86_FEATURE_CLFLSH); + return 1; +} +__setup("noclflush", setup_noclflush); void __cpuinit print_cpu_info(struct cpuinfo_x86 *c) { if (c->x86_model_id[0]) - printk("%s", c->x86_model_id); + printk(KERN_INFO "%s", c->x86_model_id); - if (c->x86_mask || c->cpuid_level >= 0) - printk(" stepping %02x\n", c->x86_mask); + if (c->x86_mask || c->cpuid_level >= 0) + printk(KERN_CONT " stepping %02x\n", c->x86_mask); else - printk("\n"); + printk(KERN_CONT "\n"); +} + +static __init int setup_disablecpuid(char *arg) +{ + int bit; + if (get_option(&arg, &bit) && bit < NCAPINTS*32) + setup_clear_cpu_cap(bit); + else + return 0; + return 1; } +__setup("clearcpuid=", setup_disablecpuid); /* * Get CPU information for use by the procfs. @@ -998,116 +1066,41 @@ void __cpuinit print_cpu_info(struct cpuinfo_x86 *c) static int show_cpuinfo(struct seq_file *m, void *v) { struct cpuinfo_x86 *c = v; - int cpu = 0; - - /* - * 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 const char *const 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", "sse4_1", "sse4_2", 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", "abm", "sse4a", "misalignsse", - "3dnowprefetch", "osvw", "ibs", "sse5", - "skinit", "wdt", 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 const char *const 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 */ - }; - + int cpu = 0, i; #ifdef CONFIG_SMP cpu = c->cpu_index; #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)cpu, - 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"); - + 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)cpu, + 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)) { + + if (cpu_has(c, X86_FEATURE_TSC)) { unsigned int freq = cpufreq_quick_get((unsigned)cpu); + if (!freq) freq = cpu_khz; seq_printf(m, "cpu MHz\t\t: %u.%03u\n", - freq / 1000, (freq % 1000)); + freq / 1000, (freq % 1000)); } /* Cache size */ - if (c->x86_cache_size >= 0) + 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) { seq_printf(m, "physical id\t: %d\n", c->phys_proc_id); @@ -1116,48 +1109,43 @@ static int show_cpuinfo(struct seq_file *m, void *v) 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 +#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:", + "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]); - } - + 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) + 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", + 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); - } + 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"); @@ -1184,8 +1172,8 @@ static void c_stop(struct seq_file *m, void *v) { } -struct seq_operations cpuinfo_op = { - .start =c_start, +const struct seq_operations cpuinfo_op = { + .start = c_start, .next = c_next, .stop = c_stop, .show = show_cpuinfo, |