diff options
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 249 |
1 files changed, 126 insertions, 123 deletions
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 1acb435a058..62db062ba13 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -77,7 +77,7 @@ unsigned long saved_video_mode; int force_mwait __cpuinitdata; -/* +/* * Early DMI memory */ int dmi_alloc_index; @@ -169,12 +169,12 @@ contig_initmem_init(unsigned long start_pfn, unsigned long end_pfn) 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); + 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) @@ -208,7 +208,8 @@ 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); @@ -240,7 +241,7 @@ unsigned __initdata ebda_size; static void discover_ebda(void) { /* - * there is a real-mode segmented pointer pointing to the + * there is a real-mode segmented pointer pointing to the * 4K EBDA area at 0x40E */ ebda_addr = *(unsigned short *)__va(EBDA_ADDR_POINTER); @@ -259,6 +260,8 @@ static void discover_ebda(void) 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); @@ -345,13 +348,13 @@ 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, + reserve_bootmem_generic(table_start << PAGE_SHIFT, (table_end - table_start) << PAGE_SHIFT); /* reserve kernel */ @@ -379,14 +382,14 @@ void __init setup_arch(char **cmdline_p) #endif #ifdef CONFIG_ACPI_SLEEP - /* - * Reserve low memory region for sleep support. - */ - acpi_reserve_bootmem(); -#endif /* - * Find and reserve possible boot-time SMP configuration: + * 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 (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { @@ -437,16 +440,13 @@ void __init setup_arch(char **cmdline_p) /* * We trust e820 completely. No explicit ROM probing in memory. - */ + */ 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(); @@ -483,9 +483,10 @@ 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; } @@ -501,9 +502,9 @@ static void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c) } if (n >= 0x80000007) - cpuid(0x80000007, &dummy, &dummy, &dummy, &c->x86_power); + 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; } @@ -512,14 +513,15 @@ 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; } @@ -559,27 +561,29 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c) 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. */ + 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); - } + + 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); @@ -599,8 +603,8 @@ 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) @@ -628,7 +632,7 @@ 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) */ @@ -642,10 +646,11 @@ 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); - + /* 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)) + if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) || + level >= 0x0f58)) set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability); if (c->x86 == 0x10 || c->x86 == 0x11) set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability); @@ -656,14 +661,14 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) 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 */ @@ -697,25 +702,26 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) static 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; } @@ -725,7 +731,7 @@ 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); @@ -734,8 +740,10 @@ 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 @@ -783,7 +791,7 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c) 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)) @@ -822,7 +830,7 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c) 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); + c->x86_max_cores = intel_num_cpu_cores(c); srat_detect_node(); } @@ -869,7 +877,7 @@ static 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 */ @@ -887,7 +895,7 @@ static 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 */ @@ -959,7 +967,7 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c) } select_idle_routine(c); - detect_ht(c); + detect_ht(c); /* * On SMP, boot_cpu_data holds the common feature set between @@ -969,7 +977,7 @@ 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]; } @@ -982,17 +990,16 @@ void __cpuinit identify_cpu(struct cpuinfo_x86 *c) 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); + 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"); } /* @@ -1002,9 +1009,9 @@ 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; + int cpu = 0, i; - /* + /* * 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 @@ -1014,10 +1021,10 @@ static int show_cpuinfo(struct seq_file *m, void *v) */ 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", + "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, @@ -1084,34 +1091,35 @@ static int show_cpuinfo(struct seq_file *m, void *v) 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); @@ -1120,48 +1128,43 @@ 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"); @@ -1189,7 +1192,7 @@ static void c_stop(struct seq_file *m, void *v) } struct seq_operations cpuinfo_op = { - .start =c_start, + .start = c_start, .next = c_next, .stop = c_stop, .show = show_cpuinfo, |