Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Copyright (C) 1995 Linus Torvalds |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | */ |
| 4 | |
| 5 | /* |
| 6 | * This file handles the architecture-dependent parts of initialization |
| 7 | */ |
| 8 | |
| 9 | #include <linux/errno.h> |
| 10 | #include <linux/sched.h> |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/mm.h> |
| 13 | #include <linux/stddef.h> |
| 14 | #include <linux/unistd.h> |
| 15 | #include <linux/ptrace.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/user.h> |
Jon Smirl | 894673e | 2006-07-10 04:44:13 -0700 | [diff] [blame] | 18 | #include <linux/screen_info.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/ioport.h> |
| 20 | #include <linux/delay.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/init.h> |
| 22 | #include <linux/initrd.h> |
| 23 | #include <linux/highmem.h> |
| 24 | #include <linux/bootmem.h> |
| 25 | #include <linux/module.h> |
| 26 | #include <asm/processor.h> |
| 27 | #include <linux/console.h> |
| 28 | #include <linux/seq_file.h> |
Vivek Goyal | aac04b3 | 2006-01-09 20:51:47 -0800 | [diff] [blame] | 29 | #include <linux/crash_dump.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/root_dev.h> |
| 31 | #include <linux/pci.h> |
Huang, Ying | 5b83683 | 2008-01-30 13:31:19 +0100 | [diff] [blame] | 32 | #include <linux/efi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/acpi.h> |
| 34 | #include <linux/kallsyms.h> |
| 35 | #include <linux/edd.h> |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 36 | #include <linux/iscsi_ibft.h> |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 37 | #include <linux/mmzone.h> |
Eric W. Biederman | 5f5609d | 2005-06-25 14:58:04 -0700 | [diff] [blame] | 38 | #include <linux/kexec.h> |
Venkatesh Pallipadi | 95235ca | 2005-12-02 10:43:20 -0800 | [diff] [blame] | 39 | #include <linux/cpufreq.h> |
Andi Kleen | e992867 | 2006-01-11 22:43:33 +0100 | [diff] [blame] | 40 | #include <linux/dmi.h> |
Muli Ben-Yehuda | 17a941d | 2006-01-11 22:44:42 +0100 | [diff] [blame] | 41 | #include <linux/dma-mapping.h> |
Andi Kleen | 681558f | 2006-03-25 16:29:46 +0100 | [diff] [blame] | 42 | #include <linux/ctype.h> |
Glauber de Oliveira Costa | 746ef0c | 2008-01-30 13:31:11 +0100 | [diff] [blame] | 43 | #include <linux/uaccess.h> |
Bernhard Kaindl | f212ec4 | 2008-01-30 13:34:11 +0100 | [diff] [blame] | 44 | #include <linux/init_ohci1394_dma.h> |
Glauber de Oliveira Costa | 790c73f | 2008-02-15 17:52:48 -0200 | [diff] [blame] | 45 | #include <linux/kvm_para.h> |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 46 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <asm/mtrr.h> |
| 48 | #include <asm/uaccess.h> |
| 49 | #include <asm/system.h> |
Ingo Molnar | e402644 | 2008-01-30 13:32:39 +0100 | [diff] [blame] | 50 | #include <asm/vsyscall.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #include <asm/io.h> |
| 52 | #include <asm/smp.h> |
| 53 | #include <asm/msr.h> |
| 54 | #include <asm/desc.h> |
| 55 | #include <video/edid.h> |
| 56 | #include <asm/e820.h> |
| 57 | #include <asm/dma.h> |
Yinghai Lu | aaf2304 | 2008-01-30 13:33:09 +0100 | [diff] [blame] | 58 | #include <asm/gart.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #include <asm/mpspec.h> |
| 60 | #include <asm/mmu_context.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include <asm/proto.h> |
| 62 | #include <asm/setup.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | #include <asm/numa.h> |
Andi Kleen | 2bc0414 | 2005-11-05 17:25:53 +0100 | [diff] [blame] | 64 | #include <asm/sections.h> |
Andi Kleen | f2d3efe | 2006-03-25 16:30:22 +0100 | [diff] [blame] | 65 | #include <asm/dmi.h> |
Bernhard Walle | 00bf409 | 2007-10-21 16:42:01 -0700 | [diff] [blame] | 66 | #include <asm/cacheflush.h> |
Thomas Gleixner | af7a78e | 2008-01-30 13:30:17 +0100 | [diff] [blame] | 67 | #include <asm/mce.h> |
Markus Metzger | eee3af4 | 2008-01-30 13:31:09 +0100 | [diff] [blame] | 68 | #include <asm/ds.h> |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 69 | #include <asm/topology.h> |
Pavel Machek | e44b7b7 | 2008-04-10 23:28:10 +0200 | [diff] [blame] | 70 | #include <asm/trampoline.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
Glauber Costa | dd46e3c | 2008-03-25 18:10:46 -0300 | [diff] [blame] | 72 | #include <mach_apic.h> |
Glauber de Oliveira Costa | 746ef0c | 2008-01-30 13:31:11 +0100 | [diff] [blame] | 73 | #ifdef CONFIG_PARAVIRT |
| 74 | #include <asm/paravirt.h> |
| 75 | #else |
| 76 | #define ARCH_SETUP |
| 77 | #endif |
| 78 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | /* |
| 80 | * Machine setup.. |
| 81 | */ |
| 82 | |
Ravikiran G Thirumalai | 6c231b7 | 2005-09-06 15:17:45 -0700 | [diff] [blame] | 83 | struct cpuinfo_x86 boot_cpu_data __read_mostly; |
Andi Kleen | 2ee60e17 | 2006-06-26 13:59:44 +0200 | [diff] [blame] | 84 | EXPORT_SYMBOL(boot_cpu_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | |
Andi Kleen | 7d851c8 | 2008-01-30 13:33:20 +0100 | [diff] [blame] | 86 | __u32 cleared_cpu_caps[NCAPINTS] __cpuinitdata; |
| 87 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | unsigned long mmu_cr4_features; |
| 89 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | /* Boot loader ID as an integer, for the benefit of proc_dointvec */ |
| 91 | int bootloader_type; |
| 92 | |
| 93 | unsigned long saved_video_mode; |
| 94 | |
Andi Kleen | f039b75 | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 95 | int force_mwait __cpuinitdata; |
| 96 | |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 97 | /* |
Andi Kleen | f2d3efe | 2006-03-25 16:30:22 +0100 | [diff] [blame] | 98 | * Early DMI memory |
| 99 | */ |
| 100 | int dmi_alloc_index; |
| 101 | char dmi_alloc_data[DMI_MAX_DATA]; |
| 102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | /* |
| 104 | * Setup options |
| 105 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | struct screen_info screen_info; |
Andi Kleen | 2ee60e17 | 2006-06-26 13:59:44 +0200 | [diff] [blame] | 107 | EXPORT_SYMBOL(screen_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | struct sys_desc_table_struct { |
| 109 | unsigned short length; |
| 110 | unsigned char table[0]; |
| 111 | }; |
| 112 | |
| 113 | struct edid_info edid_info; |
Antonino A. Daplas | ba70710 | 2006-06-26 00:26:37 -0700 | [diff] [blame] | 114 | EXPORT_SYMBOL_GPL(edid_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
| 116 | extern int root_mountflags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
Alon Bar-Lev | adf4885 | 2007-02-12 00:54:25 -0800 | [diff] [blame] | 118 | char __initdata command_line[COMMAND_LINE_SIZE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | |
Dmitri Vorobiev | a2b4bd9 | 2008-04-20 06:54:33 +0400 | [diff] [blame] | 120 | static struct resource standard_io_resources[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | { .name = "dma1", .start = 0x00, .end = 0x1f, |
| 122 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 123 | { .name = "pic1", .start = 0x20, .end = 0x21, |
| 124 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 125 | { .name = "timer0", .start = 0x40, .end = 0x43, |
| 126 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 127 | { .name = "timer1", .start = 0x50, .end = 0x53, |
| 128 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 129 | { .name = "keyboard", .start = 0x60, .end = 0x6f, |
| 130 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 131 | { .name = "dma page reg", .start = 0x80, .end = 0x8f, |
| 132 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 133 | { .name = "pic2", .start = 0xa0, .end = 0xa1, |
| 134 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 135 | { .name = "dma2", .start = 0xc0, .end = 0xdf, |
| 136 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 137 | { .name = "fpu", .start = 0xf0, .end = 0xff, |
| 138 | .flags = IORESOURCE_BUSY | IORESOURCE_IO } |
| 139 | }; |
| 140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | #define IORESOURCE_RAM (IORESOURCE_BUSY | IORESOURCE_MEM) |
| 142 | |
Bernhard Walle | c9cce83 | 2008-01-30 13:30:32 +0100 | [diff] [blame] | 143 | static struct resource data_resource = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | .name = "Kernel data", |
| 145 | .start = 0, |
| 146 | .end = 0, |
| 147 | .flags = IORESOURCE_RAM, |
| 148 | }; |
Bernhard Walle | c9cce83 | 2008-01-30 13:30:32 +0100 | [diff] [blame] | 149 | static struct resource code_resource = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | .name = "Kernel code", |
| 151 | .start = 0, |
| 152 | .end = 0, |
| 153 | .flags = IORESOURCE_RAM, |
| 154 | }; |
Bernhard Walle | c9cce83 | 2008-01-30 13:30:32 +0100 | [diff] [blame] | 155 | static struct resource bss_resource = { |
Bernhard Walle | 00bf409 | 2007-10-21 16:42:01 -0700 | [diff] [blame] | 156 | .name = "Kernel bss", |
| 157 | .start = 0, |
| 158 | .end = 0, |
| 159 | .flags = IORESOURCE_RAM, |
| 160 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Thomas Gleixner | 8c61b90 | 2008-01-30 13:30:16 +0100 | [diff] [blame] | 162 | static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c); |
| 163 | |
Vivek Goyal | aac04b3 | 2006-01-09 20:51:47 -0800 | [diff] [blame] | 164 | #ifdef CONFIG_PROC_VMCORE |
Andi Kleen | 2c8c0e6 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 165 | /* elfcorehdr= specifies the location of elf core header |
| 166 | * stored by the crashed kernel. This option will be passed |
| 167 | * by kexec loader to the capture kernel. |
| 168 | */ |
| 169 | static int __init setup_elfcorehdr(char *arg) |
| 170 | { |
| 171 | char *end; |
| 172 | if (!arg) |
| 173 | return -EINVAL; |
| 174 | elfcorehdr_addr = memparse(arg, &end); |
| 175 | return end > arg ? 0 : -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | } |
Andi Kleen | 2c8c0e6 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 177 | early_param("elfcorehdr", setup_elfcorehdr); |
| 178 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | |
Matt Tolentino | 2b97690 | 2005-06-23 00:08:06 -0700 | [diff] [blame] | 180 | #ifndef CONFIG_NUMA |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 181 | static void __init |
| 182 | contig_initmem_init(unsigned long start_pfn, unsigned long end_pfn) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | { |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 184 | unsigned long bootmap_size, bootmap; |
| 185 | |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 186 | bootmap_size = bootmem_bootmap_pages(end_pfn)<<PAGE_SHIFT; |
Yinghai Lu | 24a5da7 | 2008-02-01 17:49:41 +0100 | [diff] [blame] | 187 | bootmap = find_e820_area(0, end_pfn<<PAGE_SHIFT, bootmap_size, |
| 188 | PAGE_SIZE); |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 189 | if (bootmap == -1L) |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 190 | panic("Cannot find bootmem map of size %ld\n", bootmap_size); |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 191 | bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, end_pfn); |
Mel Gorman | 5cb248a | 2006-09-27 01:49:52 -0700 | [diff] [blame] | 192 | e820_register_active_regions(0, start_pfn, end_pfn); |
| 193 | free_bootmem_with_active_regions(0, end_pfn); |
Yinghai Lu | 1a27fc0 | 2008-03-18 12:52:37 -0700 | [diff] [blame] | 194 | early_res_to_bootmem(0, end_pfn<<PAGE_SHIFT); |
Bernhard Walle | 72a7fe3 | 2008-02-07 00:15:17 -0800 | [diff] [blame] | 195 | reserve_bootmem(bootmap, bootmap_size, BOOTMEM_DEFAULT); |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 196 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | #endif |
| 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
| 200 | struct edd edd; |
| 201 | #ifdef CONFIG_EDD_MODULE |
| 202 | EXPORT_SYMBOL(edd); |
| 203 | #endif |
| 204 | /** |
| 205 | * copy_edd() - Copy the BIOS EDD information |
| 206 | * from boot_params into a safe place. |
| 207 | * |
| 208 | */ |
| 209 | static inline void copy_edd(void) |
| 210 | { |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 211 | memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer, |
| 212 | sizeof(edd.mbr_signature)); |
| 213 | memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info)); |
| 214 | edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries; |
| 215 | edd.edd_info_nr = boot_params.eddbuf_entries; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | } |
| 217 | #else |
| 218 | static inline void copy_edd(void) |
| 219 | { |
| 220 | } |
| 221 | #endif |
| 222 | |
Bernhard Walle | 5c3391f | 2007-10-18 23:40:59 -0700 | [diff] [blame] | 223 | #ifdef CONFIG_KEXEC |
| 224 | static void __init reserve_crashkernel(void) |
| 225 | { |
Bernhard Walle | 18a01a3b | 2008-02-07 00:15:19 -0800 | [diff] [blame] | 226 | unsigned long long total_mem; |
Bernhard Walle | 5c3391f | 2007-10-18 23:40:59 -0700 | [diff] [blame] | 227 | unsigned long long crash_size, crash_base; |
| 228 | int ret; |
| 229 | |
Bernhard Walle | 18a01a3b | 2008-02-07 00:15:19 -0800 | [diff] [blame] | 230 | total_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; |
Bernhard Walle | 5c3391f | 2007-10-18 23:40:59 -0700 | [diff] [blame] | 231 | |
Bernhard Walle | 18a01a3b | 2008-02-07 00:15:19 -0800 | [diff] [blame] | 232 | ret = parse_crashkernel(boot_command_line, total_mem, |
Bernhard Walle | 5c3391f | 2007-10-18 23:40:59 -0700 | [diff] [blame] | 233 | &crash_size, &crash_base); |
| 234 | if (ret == 0 && crash_size) { |
Bernhard Walle | 18a01a3b | 2008-02-07 00:15:19 -0800 | [diff] [blame] | 235 | if (crash_base <= 0) { |
Bernhard Walle | 5c3391f | 2007-10-18 23:40:59 -0700 | [diff] [blame] | 236 | printk(KERN_INFO "crashkernel reservation failed - " |
| 237 | "you have to specify a base address\n"); |
Bernhard Walle | 18a01a3b | 2008-02-07 00:15:19 -0800 | [diff] [blame] | 238 | return; |
| 239 | } |
| 240 | |
| 241 | if (reserve_bootmem(crash_base, crash_size, |
| 242 | BOOTMEM_EXCLUSIVE) < 0) { |
| 243 | printk(KERN_INFO "crashkernel reservation failed - " |
| 244 | "memory is in use\n"); |
| 245 | return; |
| 246 | } |
| 247 | |
| 248 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " |
| 249 | "for crashkernel (System RAM: %ldMB)\n", |
| 250 | (unsigned long)(crash_size >> 20), |
| 251 | (unsigned long)(crash_base >> 20), |
| 252 | (unsigned long)(total_mem >> 20)); |
| 253 | crashk_res.start = crash_base; |
| 254 | crashk_res.end = crash_base + crash_size - 1; |
Yinghai Lu | 3def3d6 | 2008-02-22 17:07:16 -0800 | [diff] [blame] | 255 | insert_resource(&iomem_resource, &crashk_res); |
Bernhard Walle | 5c3391f | 2007-10-18 23:40:59 -0700 | [diff] [blame] | 256 | } |
| 257 | } |
| 258 | #else |
| 259 | static inline void __init reserve_crashkernel(void) |
| 260 | {} |
| 261 | #endif |
| 262 | |
Glauber de Oliveira Costa | 746ef0c | 2008-01-30 13:31:11 +0100 | [diff] [blame] | 263 | /* Overridden in paravirt.c if CONFIG_PARAVIRT */ |
Andi Kleen | e3cfac8 | 2008-01-30 13:32:49 +0100 | [diff] [blame] | 264 | void __attribute__((weak)) __init memory_setup(void) |
Glauber de Oliveira Costa | 746ef0c | 2008-01-30 13:31:11 +0100 | [diff] [blame] | 265 | { |
| 266 | machine_specific_memory_setup(); |
| 267 | } |
| 268 | |
Huang, Ying | 8b664aa | 2008-03-28 10:49:44 +0800 | [diff] [blame] | 269 | static void __init parse_setup_data(void) |
| 270 | { |
| 271 | struct setup_data *data; |
| 272 | unsigned long pa_data; |
| 273 | |
| 274 | if (boot_params.hdr.version < 0x0209) |
| 275 | return; |
| 276 | pa_data = boot_params.hdr.setup_data; |
| 277 | while (pa_data) { |
| 278 | data = early_ioremap(pa_data, PAGE_SIZE); |
| 279 | switch (data->type) { |
| 280 | default: |
| 281 | break; |
| 282 | } |
Huang, Ying | c14b2ad | 2008-03-28 10:49:48 +0800 | [diff] [blame] | 283 | #ifndef CONFIG_DEBUG_BOOT_PARAMS |
Huang, Ying | 8b664aa | 2008-03-28 10:49:44 +0800 | [diff] [blame] | 284 | free_early(pa_data, pa_data+sizeof(*data)+data->len); |
Huang, Ying | c14b2ad | 2008-03-28 10:49:48 +0800 | [diff] [blame] | 285 | #endif |
Huang, Ying | 8b664aa | 2008-03-28 10:49:44 +0800 | [diff] [blame] | 286 | pa_data = data->next; |
| 287 | early_iounmap(data, PAGE_SIZE); |
| 288 | } |
| 289 | } |
| 290 | |
Bernhard Kaindl | f212ec4 | 2008-01-30 13:34:11 +0100 | [diff] [blame] | 291 | /* |
| 292 | * setup_arch - architecture-specific boot-time initializations |
| 293 | * |
| 294 | * Note: On x86_64, fixmaps are ready for use even before this is called. |
| 295 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | void __init setup_arch(char **cmdline_p) |
| 297 | { |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 298 | unsigned i; |
| 299 | |
Alon Bar-Lev | adf4885 | 2007-02-12 00:54:25 -0800 | [diff] [blame] | 300 | printk(KERN_INFO "Command line: %s\n", boot_command_line); |
Andi Kleen | 43c85c9 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 301 | |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 302 | ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); |
| 303 | screen_info = boot_params.screen_info; |
| 304 | edid_info = boot_params.edid_info; |
| 305 | saved_video_mode = boot_params.hdr.vid_mode; |
| 306 | bootloader_type = boot_params.hdr.type_of_loader; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
| 308 | #ifdef CONFIG_BLK_DEV_RAM |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 309 | rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK; |
| 310 | rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); |
| 311 | rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | #endif |
Huang, Ying | 5b83683 | 2008-01-30 13:31:19 +0100 | [diff] [blame] | 313 | #ifdef CONFIG_EFI |
| 314 | if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, |
| 315 | "EL64", 4)) |
| 316 | efi_enabled = 1; |
| 317 | #endif |
Glauber de Oliveira Costa | 746ef0c | 2008-01-30 13:31:11 +0100 | [diff] [blame] | 318 | |
| 319 | ARCH_SETUP |
| 320 | |
| 321 | memory_setup(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | copy_edd(); |
| 323 | |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 324 | if (!boot_params.hdr.root_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | root_mountflags &= ~MS_RDONLY; |
| 326 | init_mm.start_code = (unsigned long) &_text; |
| 327 | init_mm.end_code = (unsigned long) &_etext; |
| 328 | init_mm.end_data = (unsigned long) &_edata; |
| 329 | init_mm.brk = (unsigned long) &_end; |
| 330 | |
Linus Torvalds | e3ebadd | 2007-05-07 08:44:24 -0700 | [diff] [blame] | 331 | code_resource.start = virt_to_phys(&_text); |
| 332 | code_resource.end = virt_to_phys(&_etext)-1; |
| 333 | data_resource.start = virt_to_phys(&_etext); |
| 334 | data_resource.end = virt_to_phys(&_edata)-1; |
Bernhard Walle | 00bf409 | 2007-10-21 16:42:01 -0700 | [diff] [blame] | 335 | bss_resource.start = virt_to_phys(&__bss_start); |
| 336 | bss_resource.end = virt_to_phys(&__bss_stop)-1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | early_identify_cpu(&boot_cpu_data); |
| 339 | |
Alon Bar-Lev | adf4885 | 2007-02-12 00:54:25 -0800 | [diff] [blame] | 340 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
Andi Kleen | 2c8c0e6 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 341 | *cmdline_p = command_line; |
| 342 | |
Huang, Ying | 8b664aa | 2008-03-28 10:49:44 +0800 | [diff] [blame] | 343 | parse_setup_data(); |
| 344 | |
Andi Kleen | 2c8c0e6 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 345 | parse_early_param(); |
| 346 | |
Bernhard Kaindl | f212ec4 | 2008-01-30 13:34:11 +0100 | [diff] [blame] | 347 | #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT |
| 348 | if (init_ohci1394_dma_early) |
| 349 | init_ohci1394_dma_on_all_controllers(); |
| 350 | #endif |
| 351 | |
Andi Kleen | 2c8c0e6 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 352 | finish_e820_parsing(); |
Andi Kleen | 9ca33eb | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 353 | |
Yinghai Lu | 3def3d6 | 2008-02-22 17:07:16 -0800 | [diff] [blame] | 354 | /* after parse_early_param, so could debug it */ |
| 355 | insert_resource(&iomem_resource, &code_resource); |
| 356 | insert_resource(&iomem_resource, &data_resource); |
| 357 | insert_resource(&iomem_resource, &bss_resource); |
| 358 | |
Yinghai Lu | aaf2304 | 2008-01-30 13:33:09 +0100 | [diff] [blame] | 359 | early_gart_iommu_check(); |
| 360 | |
Mel Gorman | 5cb248a | 2006-09-27 01:49:52 -0700 | [diff] [blame] | 361 | e820_register_active_regions(0, 0, -1UL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | /* |
| 363 | * partially used pages are not usable - thus |
| 364 | * we are rounding upwards: |
| 365 | */ |
| 366 | end_pfn = e820_end_of_ram(); |
Jesse Barnes | 99fc8d4 | 2008-01-30 13:33:18 +0100 | [diff] [blame] | 367 | /* update e820 for memory not covered by WB MTRRs */ |
| 368 | mtrr_bp_init(); |
| 369 | if (mtrr_trim_uncached_memory(end_pfn)) { |
| 370 | e820_register_active_regions(0, 0, -1UL); |
| 371 | end_pfn = e820_end_of_ram(); |
| 372 | } |
| 373 | |
Jan Beulich | caff071 | 2006-09-26 10:52:31 +0200 | [diff] [blame] | 374 | num_physpages = end_pfn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
| 376 | check_efer(); |
| 377 | |
Andi Kleen | cc61503 | 2008-03-12 03:53:28 +0100 | [diff] [blame] | 378 | max_pfn_mapped = init_memory_mapping(0, (max_pfn_mapped << PAGE_SHIFT)); |
Huang, Ying | 5b83683 | 2008-01-30 13:31:19 +0100 | [diff] [blame] | 379 | if (efi_enabled) |
| 380 | efi_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | |
Glauber Costa | 2785c8d | 2008-02-11 17:16:03 -0200 | [diff] [blame] | 382 | vsmp_init(); |
Glauber Costa | 2785c8d | 2008-02-11 17:16:03 -0200 | [diff] [blame] | 383 | |
Andi Kleen | f2d3efe | 2006-03-25 16:30:22 +0100 | [diff] [blame] | 384 | dmi_scan_machine(); |
| 385 | |
Rene Herman | b02aae9 | 2008-01-30 13:30:05 +0100 | [diff] [blame] | 386 | io_delay_init(); |
| 387 | |
Glauber de Oliveira Costa | 790c73f | 2008-02-15 17:52:48 -0200 | [diff] [blame] | 388 | #ifdef CONFIG_KVM_CLOCK |
| 389 | kvmclock_init(); |
| 390 | #endif |
| 391 | |
Mike Travis | 71fff5e | 2007-10-19 20:35:03 +0200 | [diff] [blame] | 392 | #ifdef CONFIG_SMP |
travis@sgi.com | df3825c | 2008-01-30 13:33:11 +0100 | [diff] [blame] | 393 | /* setup to use the early static init tables during kernel startup */ |
Yinghai Lu | 3effef1 | 2008-01-30 13:33:33 +0100 | [diff] [blame] | 394 | x86_cpu_to_apicid_early_ptr = (void *)x86_cpu_to_apicid_init; |
| 395 | x86_bios_cpu_apicid_early_ptr = (void *)x86_bios_cpu_apicid_init; |
travis@sgi.com | e8c10ef | 2008-01-30 13:33:12 +0100 | [diff] [blame] | 396 | #ifdef CONFIG_NUMA |
Yinghai Lu | 3effef1 | 2008-01-30 13:33:33 +0100 | [diff] [blame] | 397 | x86_cpu_to_node_map_early_ptr = (void *)x86_cpu_to_node_map_init; |
Mike Travis | 71fff5e | 2007-10-19 20:35:03 +0200 | [diff] [blame] | 398 | #endif |
travis@sgi.com | e8c10ef | 2008-01-30 13:33:12 +0100 | [diff] [blame] | 399 | #endif |
Mike Travis | 71fff5e | 2007-10-19 20:35:03 +0200 | [diff] [blame] | 400 | |
Len Brown | 888ba6c | 2005-08-24 12:07:20 -0400 | [diff] [blame] | 401 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | /* |
| 403 | * Initialize the ACPI boot-time table parser (gets the RSDP and SDT). |
| 404 | * Call this early for SRAT node setup. |
| 405 | */ |
| 406 | acpi_boot_table_init(); |
| 407 | #endif |
| 408 | |
Jan Beulich | caff071 | 2006-09-26 10:52:31 +0200 | [diff] [blame] | 409 | /* How many end-of-memory variables you have, grandma! */ |
| 410 | max_low_pfn = end_pfn; |
| 411 | max_pfn = end_pfn; |
| 412 | high_memory = (void *)__va(end_pfn * PAGE_SIZE - 1) + 1; |
| 413 | |
Mel Gorman | 5cb248a | 2006-09-27 01:49:52 -0700 | [diff] [blame] | 414 | /* Remove active ranges so rediscovery with NUMA-awareness happens */ |
| 415 | remove_all_active_ranges(); |
| 416 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | #ifdef CONFIG_ACPI_NUMA |
| 418 | /* |
| 419 | * Parse SRAT to discover nodes. |
| 420 | */ |
| 421 | acpi_numa_init(); |
| 422 | #endif |
| 423 | |
Matt Tolentino | 2b97690 | 2005-06-23 00:08:06 -0700 | [diff] [blame] | 424 | #ifdef CONFIG_NUMA |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 425 | numa_initmem_init(0, end_pfn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | #else |
Matt Tolentino | bbfceef | 2005-06-23 00:08:07 -0700 | [diff] [blame] | 427 | contig_initmem_init(0, end_pfn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | #endif |
| 429 | |
Yinghai Lu | 752bea4 | 2008-03-07 15:02:50 -0800 | [diff] [blame] | 430 | dma32_reserve_bootmem(); |
| 431 | |
Len Brown | 673d5b4 | 2007-07-28 03:33:16 -0400 | [diff] [blame] | 432 | #ifdef CONFIG_ACPI_SLEEP |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 433 | /* |
| 434 | * Reserve low memory region for sleep support. |
| 435 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | acpi_reserve_bootmem(); |
| 437 | #endif |
Huang, Ying | 5b83683 | 2008-01-30 13:31:19 +0100 | [diff] [blame] | 438 | |
Huang, Ying | a382806 | 2008-01-30 13:34:10 +0100 | [diff] [blame] | 439 | if (efi_enabled) |
Huang, Ying | 5b83683 | 2008-01-30 13:31:19 +0100 | [diff] [blame] | 440 | efi_reserve_bootmem(); |
Huang, Ying | 5b83683 | 2008-01-30 13:31:19 +0100 | [diff] [blame] | 441 | |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 442 | /* |
| 443 | * Find and reserve possible boot-time SMP configuration: |
| 444 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | find_smp_config(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | #ifdef CONFIG_BLK_DEV_INITRD |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 447 | if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { |
| 448 | unsigned long ramdisk_image = boot_params.hdr.ramdisk_image; |
| 449 | unsigned long ramdisk_size = boot_params.hdr.ramdisk_size; |
| 450 | unsigned long ramdisk_end = ramdisk_image + ramdisk_size; |
| 451 | unsigned long end_of_mem = end_pfn << PAGE_SHIFT; |
| 452 | |
| 453 | if (ramdisk_end <= end_of_mem) { |
Yinghai Lu | 2b8106a | 2008-03-18 12:51:22 -0700 | [diff] [blame] | 454 | /* |
| 455 | * don't need to reserve again, already reserved early |
| 456 | * in x86_64_start_kernel, and early_res_to_bootmem |
| 457 | * convert that to reserved in bootmem |
| 458 | */ |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 459 | initrd_start = ramdisk_image + PAGE_OFFSET; |
| 460 | initrd_end = initrd_start+ramdisk_size; |
| 461 | } else { |
Andi Kleen | 7517527 | 2008-01-30 13:33:17 +0100 | [diff] [blame] | 462 | free_bootmem(ramdisk_image, ramdisk_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | printk(KERN_ERR "initrd extends beyond end of memory " |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 464 | "(0x%08lx > 0x%08lx)\ndisabling initrd\n", |
| 465 | ramdisk_end, end_of_mem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | initrd_start = 0; |
| 467 | } |
| 468 | } |
| 469 | #endif |
Bernhard Walle | 5c3391f | 2007-10-18 23:40:59 -0700 | [diff] [blame] | 470 | reserve_crashkernel(); |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 471 | |
| 472 | reserve_ibft_region(); |
| 473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | paging_init(); |
Ingo Molnar | e402644 | 2008-01-30 13:32:39 +0100 | [diff] [blame] | 475 | map_vsyscall(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | |
Andi Kleen | dfa4698 | 2006-09-26 10:52:30 +0200 | [diff] [blame] | 477 | early_quirks(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
Len Brown | 888ba6c | 2005-08-24 12:07:20 -0400 | [diff] [blame] | 479 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | /* |
| 481 | * Read APIC and some other early information from ACPI tables. |
| 482 | */ |
| 483 | acpi_boot_init(); |
| 484 | #endif |
| 485 | |
Ravikiran Thirumalai | 05b3cbd | 2006-01-11 22:45:36 +0100 | [diff] [blame] | 486 | init_cpu_to_node(); |
| 487 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | /* |
| 489 | * get boot-time SMP configuration: |
| 490 | */ |
| 491 | if (smp_found_config) |
| 492 | get_smp_config(); |
| 493 | init_apic_mappings(); |
Thomas Gleixner | 3e35a0e | 2008-01-30 13:30:19 +0100 | [diff] [blame] | 494 | ioapic_init_mappings(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
Marcelo Tosatti | 0cf1bfd | 2008-02-22 12:21:36 -0500 | [diff] [blame] | 496 | kvm_guest_init(); |
| 497 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | /* |
Andi Kleen | fc986db | 2007-02-13 13:26:24 +0100 | [diff] [blame] | 499 | * We trust e820 completely. No explicit ROM probing in memory. |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 500 | */ |
Yinghai Lu | 3def3d6 | 2008-02-22 17:07:16 -0800 | [diff] [blame] | 501 | e820_reserve_resources(); |
Rafael J. Wysocki | e8eff5a | 2006-09-25 23:32:46 -0700 | [diff] [blame] | 502 | e820_mark_nosave_regions(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | /* request I/O space for devices used on all i[345]86 PCs */ |
Andi Kleen | 9d0ef4f | 2006-09-30 01:47:55 +0200 | [diff] [blame] | 505 | for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | request_resource(&ioport_resource, &standard_io_resources[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | |
Andi Kleen | a1e9778 | 2005-04-16 15:25:12 -0700 | [diff] [blame] | 508 | e820_setup_gap(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | #ifdef CONFIG_VT |
| 511 | #if defined(CONFIG_VGA_CONSOLE) |
Huang, Ying | 5b83683 | 2008-01-30 13:31:19 +0100 | [diff] [blame] | 512 | if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) |
| 513 | conswitchp = &vga_con; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | #elif defined(CONFIG_DUMMY_CONSOLE) |
| 515 | conswitchp = &dummy_con; |
| 516 | #endif |
| 517 | #endif |
| 518 | } |
| 519 | |
Ashok Raj | e6982c6 | 2005-06-25 14:54:58 -0700 | [diff] [blame] | 520 | static int __cpuinit get_model_name(struct cpuinfo_x86 *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | { |
| 522 | unsigned int *v; |
| 523 | |
Andi Kleen | ebfcaa9 | 2005-04-16 15:25:18 -0700 | [diff] [blame] | 524 | if (c->extended_cpuid_level < 0x80000004) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | return 0; |
| 526 | |
| 527 | v = (unsigned int *) c->x86_model_id; |
| 528 | cpuid(0x80000002, &v[0], &v[1], &v[2], &v[3]); |
| 529 | cpuid(0x80000003, &v[4], &v[5], &v[6], &v[7]); |
| 530 | cpuid(0x80000004, &v[8], &v[9], &v[10], &v[11]); |
| 531 | c->x86_model_id[48] = 0; |
| 532 | return 1; |
| 533 | } |
| 534 | |
| 535 | |
Ashok Raj | e6982c6 | 2005-06-25 14:54:58 -0700 | [diff] [blame] | 536 | static void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | { |
| 538 | unsigned int n, dummy, eax, ebx, ecx, edx; |
| 539 | |
Andi Kleen | ebfcaa9 | 2005-04-16 15:25:18 -0700 | [diff] [blame] | 540 | n = c->extended_cpuid_level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | |
| 542 | if (n >= 0x80000005) { |
| 543 | cpuid(0x80000005, &dummy, &ebx, &ecx, &edx); |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 544 | printk(KERN_INFO "CPU: L1 I Cache: %dK (%d bytes/line), " |
| 545 | "D cache %dK (%d bytes/line)\n", |
| 546 | edx>>24, edx&0xFF, ecx>>24, ecx&0xFF); |
| 547 | c->x86_cache_size = (ecx>>24) + (edx>>24); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | /* On K8 L1 TLB is inclusive, so don't count it */ |
| 549 | c->x86_tlbsize = 0; |
| 550 | } |
| 551 | |
| 552 | if (n >= 0x80000006) { |
| 553 | cpuid(0x80000006, &dummy, &ebx, &ecx, &edx); |
| 554 | ecx = cpuid_ecx(0x80000006); |
| 555 | c->x86_cache_size = ecx >> 16; |
| 556 | c->x86_tlbsize += ((ebx >> 16) & 0xfff) + (ebx & 0xfff); |
| 557 | |
| 558 | printk(KERN_INFO "CPU: L2 Cache: %dK (%d bytes/line)\n", |
| 559 | c->x86_cache_size, ecx & 0xFF); |
| 560 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | if (n >= 0x80000008) { |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 562 | cpuid(0x80000008, &eax, &dummy, &dummy, &dummy); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | c->x86_virt_bits = (eax >> 8) & 0xff; |
| 564 | c->x86_phys_bits = eax & 0xff; |
| 565 | } |
| 566 | } |
| 567 | |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 568 | #ifdef CONFIG_NUMA |
Sam Ravnborg | 08acb67 | 2008-02-17 13:22:46 +0100 | [diff] [blame] | 569 | static int __cpuinit nearby_node(int apicid) |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 570 | { |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 571 | int i, node; |
| 572 | |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 573 | for (i = apicid - 1; i >= 0; i--) { |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 574 | node = apicid_to_node[i]; |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 575 | if (node != NUMA_NO_NODE && node_online(node)) |
| 576 | return node; |
| 577 | } |
| 578 | for (i = apicid + 1; i < MAX_LOCAL_APIC; i++) { |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 579 | node = apicid_to_node[i]; |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 580 | if (node != NUMA_NO_NODE && node_online(node)) |
| 581 | return node; |
| 582 | } |
| 583 | return first_node(node_online_map); /* Shouldn't happen */ |
| 584 | } |
| 585 | #endif |
| 586 | |
Andi Kleen | 6351864 | 2005-04-16 15:25:16 -0700 | [diff] [blame] | 587 | /* |
| 588 | * On a AMD dual core setup the lower bits of the APIC id distingush the cores. |
| 589 | * Assumes number of cores is a power of two. |
| 590 | */ |
Sam Ravnborg | adb8dae | 2008-01-30 13:33:37 +0100 | [diff] [blame] | 591 | static void __cpuinit amd_detect_cmp(struct cpuinfo_x86 *c) |
Andi Kleen | 6351864 | 2005-04-16 15:25:16 -0700 | [diff] [blame] | 592 | { |
| 593 | #ifdef CONFIG_SMP |
Andi Kleen | b41e293 | 2005-05-20 14:27:55 -0700 | [diff] [blame] | 594 | unsigned bits; |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 595 | #ifdef CONFIG_NUMA |
Rohit Seth | f3fa8eb | 2006-06-26 13:58:17 +0200 | [diff] [blame] | 596 | int cpu = smp_processor_id(); |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 597 | int node = 0; |
Ravikiran G Thirumalai | 60c1bc8 | 2006-03-25 16:30:04 +0100 | [diff] [blame] | 598 | unsigned apicid = hard_smp_processor_id(); |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 599 | #endif |
Yinghai Lu | a860b63 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 600 | bits = c->x86_coreid_bits; |
Andi Kleen | b41e293 | 2005-05-20 14:27:55 -0700 | [diff] [blame] | 601 | |
| 602 | /* Low order bits define the core id (index of core in socket) */ |
Yinghai Lu | 01aaea1 | 2008-03-06 13:46:39 -0800 | [diff] [blame] | 603 | c->cpu_core_id = c->initial_apicid & ((1 << bits)-1); |
| 604 | /* Convert the initial APIC ID into the socket ID */ |
| 605 | c->phys_proc_id = c->initial_apicid >> bits; |
Andi Kleen | 6351864 | 2005-04-16 15:25:16 -0700 | [diff] [blame] | 606 | |
| 607 | #ifdef CONFIG_NUMA |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 608 | node = c->phys_proc_id; |
| 609 | if (apicid_to_node[apicid] != NUMA_NO_NODE) |
| 610 | node = apicid_to_node[apicid]; |
| 611 | if (!node_online(node)) { |
| 612 | /* Two possibilities here: |
| 613 | - The CPU is missing memory and no node was created. |
| 614 | In that case try picking one from a nearby CPU |
| 615 | - The APIC IDs differ from the HyperTransport node IDs |
| 616 | which the K8 northbridge parsing fills in. |
| 617 | Assume they are all increased by a constant offset, |
| 618 | but in the same order as the HT nodeids. |
| 619 | If that doesn't result in a usable node fall back to the |
| 620 | path for the previous case. */ |
| 621 | |
Yinghai Lu | 01aaea1 | 2008-03-06 13:46:39 -0800 | [diff] [blame] | 622 | int ht_nodeid = c->initial_apicid; |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 623 | |
| 624 | if (ht_nodeid >= 0 && |
| 625 | apicid_to_node[ht_nodeid] != NUMA_NO_NODE) |
| 626 | node = apicid_to_node[ht_nodeid]; |
| 627 | /* Pick a nearby node */ |
| 628 | if (!node_online(node)) |
| 629 | node = nearby_node(apicid); |
| 630 | } |
Andi Kleen | 69d81fc | 2005-11-05 17:25:53 +0100 | [diff] [blame] | 631 | numa_set_node(cpu, node); |
Andi Kleen | a158608 | 2005-05-16 21:53:21 -0700 | [diff] [blame] | 632 | |
Rohit Seth | e42f943 | 2006-06-26 13:59:14 +0200 | [diff] [blame] | 633 | printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node); |
Andi Kleen | 3f098c2 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 634 | #endif |
Andi Kleen | 6351864 | 2005-04-16 15:25:16 -0700 | [diff] [blame] | 635 | #endif |
| 636 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | |
Andi Kleen | 2b16a23 | 2008-01-30 13:32:40 +0100 | [diff] [blame] | 638 | static void __cpuinit early_init_amd_mc(struct cpuinfo_x86 *c) |
Yinghai Lu | a860b63 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 639 | { |
| 640 | #ifdef CONFIG_SMP |
| 641 | unsigned bits, ecx; |
| 642 | |
| 643 | /* Multi core CPU? */ |
| 644 | if (c->extended_cpuid_level < 0x80000008) |
| 645 | return; |
| 646 | |
| 647 | ecx = cpuid_ecx(0x80000008); |
| 648 | |
| 649 | c->x86_max_cores = (ecx & 0xff) + 1; |
| 650 | |
| 651 | /* CPU telling us the core id bits shift? */ |
| 652 | bits = (ecx >> 12) & 0xF; |
| 653 | |
| 654 | /* Otherwise recompute */ |
| 655 | if (bits == 0) { |
| 656 | while ((1 << bits) < c->x86_max_cores) |
| 657 | bits++; |
| 658 | } |
| 659 | |
| 660 | c->x86_coreid_bits = bits; |
| 661 | |
| 662 | #endif |
| 663 | } |
| 664 | |
Thomas Gleixner | fb79d22 | 2007-10-12 23:04:07 +0200 | [diff] [blame] | 665 | #define ENABLE_C1E_MASK 0x18000000 |
| 666 | #define CPUID_PROCESSOR_SIGNATURE 1 |
| 667 | #define CPUID_XFAM 0x0ff00000 |
| 668 | #define CPUID_XFAM_K8 0x00000000 |
| 669 | #define CPUID_XFAM_10H 0x00100000 |
| 670 | #define CPUID_XFAM_11H 0x00200000 |
| 671 | #define CPUID_XMOD 0x000f0000 |
| 672 | #define CPUID_XMOD_REV_F 0x00040000 |
| 673 | |
| 674 | /* AMD systems with C1E don't have a working lAPIC timer. Check for that. */ |
| 675 | static __cpuinit int amd_apic_timer_broken(void) |
| 676 | { |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 677 | u32 lo, hi, eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE); |
| 678 | |
Thomas Gleixner | fb79d22 | 2007-10-12 23:04:07 +0200 | [diff] [blame] | 679 | switch (eax & CPUID_XFAM) { |
| 680 | case CPUID_XFAM_K8: |
| 681 | if ((eax & CPUID_XMOD) < CPUID_XMOD_REV_F) |
| 682 | break; |
| 683 | case CPUID_XFAM_10H: |
| 684 | case CPUID_XFAM_11H: |
| 685 | rdmsr(MSR_K8_ENABLE_C1E, lo, hi); |
| 686 | if (lo & ENABLE_C1E_MASK) |
| 687 | return 1; |
| 688 | break; |
| 689 | default: |
| 690 | /* err on the side of caution */ |
| 691 | return 1; |
| 692 | } |
| 693 | return 0; |
| 694 | } |
| 695 | |
Andi Kleen | 2b16a23 | 2008-01-30 13:32:40 +0100 | [diff] [blame] | 696 | static void __cpuinit early_init_amd(struct cpuinfo_x86 *c) |
| 697 | { |
| 698 | early_init_amd_mc(c); |
| 699 | |
| 700 | /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */ |
| 701 | if (c->x86_power & (1<<8)) |
| 702 | set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); |
| 703 | } |
| 704 | |
Magnus Damm | ed77504 | 2006-09-26 10:52:36 +0200 | [diff] [blame] | 705 | static void __cpuinit init_amd(struct cpuinfo_x86 *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | { |
Andi Kleen | 7bcd3f3 | 2006-02-03 21:51:02 +0100 | [diff] [blame] | 707 | unsigned level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | |
Linus Torvalds | bc5e8fd | 2005-09-17 15:41:04 -0700 | [diff] [blame] | 709 | #ifdef CONFIG_SMP |
| 710 | unsigned long value; |
| 711 | |
Andi Kleen | 7d318d7 | 2005-09-29 22:05:55 +0200 | [diff] [blame] | 712 | /* |
| 713 | * Disable TLB flush filter by setting HWCR.FFDIS on K8 |
| 714 | * bit 6 of msr C001_0015 |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 715 | * |
Andi Kleen | 7d318d7 | 2005-09-29 22:05:55 +0200 | [diff] [blame] | 716 | * Errata 63 for SH-B3 steppings |
| 717 | * Errata 122 for all steppings (F+ have it disabled by default) |
| 718 | */ |
| 719 | if (c->x86 == 15) { |
| 720 | rdmsrl(MSR_K8_HWCR, value); |
| 721 | value |= 1 << 6; |
| 722 | wrmsrl(MSR_K8_HWCR, value); |
| 723 | } |
Linus Torvalds | bc5e8fd | 2005-09-17 15:41:04 -0700 | [diff] [blame] | 724 | #endif |
| 725 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | /* Bit 31 in normal CPUID used for nonstandard 3DNow ID; |
| 727 | 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */ |
Ingo Molnar | 9716951 | 2008-02-26 08:54:01 +0100 | [diff] [blame] | 728 | clear_cpu_cap(c, 0*32+31); |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 729 | |
Andi Kleen | 7bcd3f3 | 2006-02-03 21:51:02 +0100 | [diff] [blame] | 730 | /* On C+ stepping K8 rep microcode works well for copy/memset */ |
| 731 | level = cpuid_eax(1); |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 732 | if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) || |
| 733 | level >= 0x0f58)) |
Jeremy Fitzhardinge | 53756d3 | 2008-01-30 13:30:55 +0100 | [diff] [blame] | 734 | set_cpu_cap(c, X86_FEATURE_REP_GOOD); |
Andi Kleen | 99741fa | 2007-10-17 18:04:41 +0200 | [diff] [blame] | 735 | if (c->x86 == 0x10 || c->x86 == 0x11) |
Jeremy Fitzhardinge | 53756d3 | 2008-01-30 13:30:55 +0100 | [diff] [blame] | 736 | set_cpu_cap(c, X86_FEATURE_REP_GOOD); |
Andi Kleen | 7bcd3f3 | 2006-02-03 21:51:02 +0100 | [diff] [blame] | 737 | |
Andi Kleen | 18bd057 | 2006-04-20 02:36:45 +0200 | [diff] [blame] | 738 | /* Enable workaround for FXSAVE leak */ |
| 739 | if (c->x86 >= 6) |
Jeremy Fitzhardinge | 53756d3 | 2008-01-30 13:30:55 +0100 | [diff] [blame] | 740 | set_cpu_cap(c, X86_FEATURE_FXSAVE_LEAK); |
Andi Kleen | 18bd057 | 2006-04-20 02:36:45 +0200 | [diff] [blame] | 741 | |
Rohit Seth | e42f943 | 2006-06-26 13:59:14 +0200 | [diff] [blame] | 742 | level = get_model_name(c); |
| 743 | if (!level) { |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 744 | switch (c->x86) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | case 15: |
| 746 | /* Should distinguish Models here, but this is only |
| 747 | a fallback anyways. */ |
| 748 | strcpy(c->x86_model_id, "Hammer"); |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 749 | break; |
| 750 | } |
| 751 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | display_cacheinfo(c); |
| 753 | |
Andi Kleen | faee9a5 | 2006-06-26 13:56:10 +0200 | [diff] [blame] | 754 | /* Multi core CPU? */ |
| 755 | if (c->extended_cpuid_level >= 0x80000008) |
Andi Kleen | 6351864 | 2005-04-16 15:25:16 -0700 | [diff] [blame] | 756 | amd_detect_cmp(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | |
Andi Kleen | 67cddd9 | 2007-07-21 17:10:03 +0200 | [diff] [blame] | 758 | if (c->extended_cpuid_level >= 0x80000006 && |
| 759 | (cpuid_edx(0x80000006) & 0xf000)) |
| 760 | num_cache_leaves = 4; |
| 761 | else |
| 762 | num_cache_leaves = 3; |
Andi Kleen | 2049336 | 2006-09-26 10:52:41 +0200 | [diff] [blame] | 763 | |
Andi Kleen | 0bd8acd | 2007-07-22 11:12:34 +0200 | [diff] [blame] | 764 | if (c->x86 == 0xf || c->x86 == 0x10 || c->x86 == 0x11) |
Jeremy Fitzhardinge | 53756d3 | 2008-01-30 13:30:55 +0100 | [diff] [blame] | 765 | set_cpu_cap(c, X86_FEATURE_K8); |
Andi Kleen | 0bd8acd | 2007-07-22 11:12:34 +0200 | [diff] [blame] | 766 | |
Andi Kleen | de42186 | 2008-01-30 13:32:37 +0100 | [diff] [blame] | 767 | /* MFENCE stops RDTSC speculation */ |
| 768 | set_cpu_cap(c, X86_FEATURE_MFENCE_RDTSC); |
Andi Kleen | f039b75 | 2007-05-02 19:27:12 +0200 | [diff] [blame] | 769 | |
Thomas Gleixner | fb79d22 | 2007-10-12 23:04:07 +0200 | [diff] [blame] | 770 | if (amd_apic_timer_broken()) |
| 771 | disable_apic_timer = 1; |
Andi Kleen | 8346ea1 | 2008-03-12 03:53:32 +0100 | [diff] [blame] | 772 | |
| 773 | if (c == &boot_cpu_data && c->x86 >= 0xf && c->x86 <= 0x11) { |
| 774 | unsigned long long tseg; |
| 775 | |
| 776 | /* |
| 777 | * Split up direct mapping around the TSEG SMM area. |
| 778 | * Don't do it for gbpages because there seems very little |
| 779 | * benefit in doing so. |
| 780 | */ |
| 781 | if (!rdmsrl_safe(MSR_K8_TSEG_ADDR, &tseg) && |
| 782 | (tseg >> PMD_SHIFT) < (max_pfn_mapped >> (PMD_SHIFT-PAGE_SHIFT))) |
| 783 | set_memory_4k((unsigned long)__va(tseg), 1); |
| 784 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | } |
| 786 | |
Glauber de Oliveira Costa | 1a53905 | 2008-01-30 13:31:39 +0100 | [diff] [blame] | 787 | void __cpuinit detect_ht(struct cpuinfo_x86 *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | { |
| 789 | #ifdef CONFIG_SMP |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 790 | u32 eax, ebx, ecx, edx; |
| 791 | int index_msb, core_bits; |
Siddha, Suresh B | 94605ef | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 792 | |
| 793 | cpuid(1, &eax, &ebx, &ecx, &edx); |
| 794 | |
Siddha, Suresh B | 94605ef | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 795 | |
Rohit Seth | e42f943 | 2006-06-26 13:59:14 +0200 | [diff] [blame] | 796 | if (!cpu_has(c, X86_FEATURE_HT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | return; |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 798 | if (cpu_has(c, X86_FEATURE_CMP_LEGACY)) |
Rohit Seth | e42f943 | 2006-06-26 13:59:14 +0200 | [diff] [blame] | 799 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | smp_num_siblings = (ebx & 0xff0000) >> 16; |
Siddha, Suresh B | 94605ef | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 802 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | if (smp_num_siblings == 1) { |
| 804 | printk(KERN_INFO "CPU: Hyper-Threading is disabled\n"); |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 805 | } else if (smp_num_siblings > 1) { |
Siddha, Suresh B | 94605ef | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 806 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | if (smp_num_siblings > NR_CPUS) { |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 808 | printk(KERN_WARNING "CPU: Unsupported number of " |
| 809 | "siblings %d", smp_num_siblings); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | smp_num_siblings = 1; |
| 811 | return; |
| 812 | } |
Siddha, Suresh B | 94605ef | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 813 | |
| 814 | index_msb = get_count_order(smp_num_siblings); |
Rohit Seth | f3fa8eb | 2006-06-26 13:58:17 +0200 | [diff] [blame] | 815 | c->phys_proc_id = phys_pkg_id(index_msb); |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 816 | |
Siddha, Suresh B | 94605ef | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 817 | smp_num_siblings = smp_num_siblings / c->x86_max_cores; |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 818 | |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 819 | index_msb = get_count_order(smp_num_siblings); |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 820 | |
Siddha, Suresh B | 94605ef | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 821 | core_bits = get_count_order(c->x86_max_cores); |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 822 | |
Rohit Seth | f3fa8eb | 2006-06-26 13:58:17 +0200 | [diff] [blame] | 823 | c->cpu_core_id = phys_pkg_id(index_msb) & |
Siddha, Suresh B | 94605ef | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 824 | ((1 << core_bits) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | } |
Rohit Seth | e42f943 | 2006-06-26 13:59:14 +0200 | [diff] [blame] | 826 | out: |
| 827 | if ((c->x86_max_cores * smp_num_siblings) > 1) { |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 828 | printk(KERN_INFO "CPU: Physical Processor ID: %d\n", |
| 829 | c->phys_proc_id); |
| 830 | printk(KERN_INFO "CPU: Processor Core ID: %d\n", |
| 831 | c->cpu_core_id); |
Rohit Seth | e42f943 | 2006-06-26 13:59:14 +0200 | [diff] [blame] | 832 | } |
| 833 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | #endif |
| 835 | } |
| 836 | |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 837 | /* |
| 838 | * find out the number of processor cores on the die |
| 839 | */ |
Ashok Raj | e6982c6 | 2005-06-25 14:54:58 -0700 | [diff] [blame] | 840 | static int __cpuinit intel_num_cpu_cores(struct cpuinfo_x86 *c) |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 841 | { |
Rohit Seth | 2bbc419 | 2006-06-26 13:58:02 +0200 | [diff] [blame] | 842 | unsigned int eax, t; |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 843 | |
| 844 | if (c->cpuid_level < 4) |
| 845 | return 1; |
| 846 | |
Rohit Seth | 2bbc419 | 2006-06-26 13:58:02 +0200 | [diff] [blame] | 847 | cpuid_count(4, 0, &eax, &t, &t, &t); |
Andi Kleen | 3dd9d51 | 2005-04-16 15:25:15 -0700 | [diff] [blame] | 848 | |
| 849 | if (eax & 0x1f) |
| 850 | return ((eax >> 26) + 1); |
| 851 | else |
| 852 | return 1; |
| 853 | } |
| 854 | |
Sam Ravnborg | 04d733b | 2008-02-17 13:22:47 +0100 | [diff] [blame] | 855 | static void __cpuinit srat_detect_node(void) |
Andi Kleen | df0cc26 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 856 | { |
| 857 | #ifdef CONFIG_NUMA |
Ravikiran G Thirumalai | ddea7be | 2005-10-03 10:36:28 -0700 | [diff] [blame] | 858 | unsigned node; |
Andi Kleen | df0cc26 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 859 | int cpu = smp_processor_id(); |
Rohit Seth | e42f943 | 2006-06-26 13:59:14 +0200 | [diff] [blame] | 860 | int apicid = hard_smp_processor_id(); |
Andi Kleen | df0cc26 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 861 | |
| 862 | /* Don't do the funky fallback heuristics the AMD version employs |
| 863 | for now. */ |
Rohit Seth | e42f943 | 2006-06-26 13:59:14 +0200 | [diff] [blame] | 864 | node = apicid_to_node[apicid]; |
Yinghai Lu | 475613b | 2008-02-24 23:23:09 -0800 | [diff] [blame] | 865 | if (node == NUMA_NO_NODE || !node_online(node)) |
Daniel Yeisley | 0d01532 | 2006-05-30 22:47:57 +0200 | [diff] [blame] | 866 | node = first_node(node_online_map); |
Andi Kleen | 69d81fc | 2005-11-05 17:25:53 +0100 | [diff] [blame] | 867 | numa_set_node(cpu, node); |
Andi Kleen | df0cc26 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 868 | |
Andi Kleen | c31fbb1 | 2006-09-26 10:52:33 +0200 | [diff] [blame] | 869 | printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node); |
Andi Kleen | df0cc26 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 870 | #endif |
| 871 | } |
| 872 | |
Andi Kleen | 2b16a23 | 2008-01-30 13:32:40 +0100 | [diff] [blame] | 873 | static void __cpuinit early_init_intel(struct cpuinfo_x86 *c) |
| 874 | { |
| 875 | if ((c->x86 == 0xf && c->x86_model >= 0x03) || |
| 876 | (c->x86 == 0x6 && c->x86_model >= 0x0e)) |
Ingo Molnar | 9716951 | 2008-02-26 08:54:01 +0100 | [diff] [blame] | 877 | set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); |
Andi Kleen | 2b16a23 | 2008-01-30 13:32:40 +0100 | [diff] [blame] | 878 | } |
| 879 | |
Ashok Raj | e6982c6 | 2005-06-25 14:54:58 -0700 | [diff] [blame] | 880 | static void __cpuinit init_intel(struct cpuinfo_x86 *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | { |
| 882 | /* Cache sizes */ |
| 883 | unsigned n; |
| 884 | |
| 885 | init_intel_cacheinfo(c); |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 886 | if (c->cpuid_level > 9) { |
Venkatesh Pallipadi | 0080e66 | 2006-06-26 13:59:59 +0200 | [diff] [blame] | 887 | unsigned eax = cpuid_eax(10); |
| 888 | /* Check for version and the number of counters */ |
| 889 | if ((eax & 0xff) && (((eax>>8) & 0xff) > 1)) |
Jeremy Fitzhardinge | 53756d3 | 2008-01-30 13:30:55 +0100 | [diff] [blame] | 890 | set_cpu_cap(c, X86_FEATURE_ARCH_PERFMON); |
Venkatesh Pallipadi | 0080e66 | 2006-06-26 13:59:59 +0200 | [diff] [blame] | 891 | } |
| 892 | |
Stephane Eranian | 36b2a8d | 2006-12-07 02:14:01 +0100 | [diff] [blame] | 893 | if (cpu_has_ds) { |
| 894 | unsigned int l1, l2; |
| 895 | rdmsr(MSR_IA32_MISC_ENABLE, l1, l2); |
Stephane Eranian | ee58fad | 2006-12-07 02:14:11 +0100 | [diff] [blame] | 896 | if (!(l1 & (1<<11))) |
Jeremy Fitzhardinge | 53756d3 | 2008-01-30 13:30:55 +0100 | [diff] [blame] | 897 | set_cpu_cap(c, X86_FEATURE_BTS); |
Stephane Eranian | 36b2a8d | 2006-12-07 02:14:01 +0100 | [diff] [blame] | 898 | if (!(l1 & (1<<12))) |
Jeremy Fitzhardinge | 53756d3 | 2008-01-30 13:30:55 +0100 | [diff] [blame] | 899 | set_cpu_cap(c, X86_FEATURE_PEBS); |
Stephane Eranian | 36b2a8d | 2006-12-07 02:14:01 +0100 | [diff] [blame] | 900 | } |
| 901 | |
Markus Metzger | eee3af4 | 2008-01-30 13:31:09 +0100 | [diff] [blame] | 902 | |
| 903 | if (cpu_has_bts) |
| 904 | ds_init_intel(c); |
| 905 | |
Andi Kleen | ebfcaa9 | 2005-04-16 15:25:18 -0700 | [diff] [blame] | 906 | n = c->extended_cpuid_level; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | if (n >= 0x80000008) { |
| 908 | unsigned eax = cpuid_eax(0x80000008); |
| 909 | c->x86_virt_bits = (eax >> 8) & 0xff; |
| 910 | c->x86_phys_bits = eax & 0xff; |
Shaohua Li | af9c142 | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 911 | /* CPUID workaround for Intel 0F34 CPU */ |
| 912 | if (c->x86_vendor == X86_VENDOR_INTEL && |
| 913 | c->x86 == 0xF && c->x86_model == 0x3 && |
| 914 | c->x86_mask == 0x4) |
| 915 | c->x86_phys_bits = 36; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | } |
| 917 | |
| 918 | if (c->x86 == 15) |
| 919 | c->x86_cache_alignment = c->x86_clflush_size * 2; |
Andi Kleen | 27fbe5b | 2006-09-26 10:52:41 +0200 | [diff] [blame] | 920 | if (c->x86 == 6) |
Jeremy Fitzhardinge | 53756d3 | 2008-01-30 13:30:55 +0100 | [diff] [blame] | 921 | set_cpu_cap(c, X86_FEATURE_REP_GOOD); |
Andi Kleen | 707fa8e | 2008-01-30 13:32:37 +0100 | [diff] [blame] | 922 | set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC); |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 923 | c->x86_max_cores = intel_num_cpu_cores(c); |
Andi Kleen | df0cc26 | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 924 | |
| 925 | srat_detect_node(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | } |
| 927 | |
Dave Jones | 0e03eb8 | 2008-03-26 12:09:16 -0400 | [diff] [blame] | 928 | static void __cpuinit early_init_centaur(struct cpuinfo_x86 *c) |
| 929 | { |
| 930 | if (c->x86 == 0x6 && c->x86_model >= 0xf) |
| 931 | set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability); |
| 932 | } |
| 933 | |
| 934 | static void __cpuinit init_centaur(struct cpuinfo_x86 *c) |
| 935 | { |
| 936 | /* Cache sizes */ |
| 937 | unsigned n; |
| 938 | |
| 939 | n = c->extended_cpuid_level; |
| 940 | if (n >= 0x80000008) { |
| 941 | unsigned eax = cpuid_eax(0x80000008); |
| 942 | c->x86_virt_bits = (eax >> 8) & 0xff; |
| 943 | c->x86_phys_bits = eax & 0xff; |
| 944 | } |
| 945 | |
| 946 | if (c->x86 == 0x6 && c->x86_model >= 0xf) { |
| 947 | c->x86_cache_alignment = c->x86_clflush_size * 2; |
| 948 | set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC); |
| 949 | set_cpu_cap(c, X86_FEATURE_REP_GOOD); |
| 950 | } |
| 951 | set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC); |
| 952 | } |
| 953 | |
Adrian Bunk | 672289e | 2005-09-10 00:27:21 -0700 | [diff] [blame] | 954 | static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | { |
| 956 | char *v = c->x86_vendor_id; |
| 957 | |
| 958 | if (!strcmp(v, "AuthenticAMD")) |
| 959 | c->x86_vendor = X86_VENDOR_AMD; |
| 960 | else if (!strcmp(v, "GenuineIntel")) |
| 961 | c->x86_vendor = X86_VENDOR_INTEL; |
Dave Jones | 0e03eb8 | 2008-03-26 12:09:16 -0400 | [diff] [blame] | 962 | else if (!strcmp(v, "CentaurHauls")) |
| 963 | c->x86_vendor = X86_VENDOR_CENTAUR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | else |
| 965 | c->x86_vendor = X86_VENDOR_UNKNOWN; |
| 966 | } |
| 967 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | /* Do some early cpuid on the boot CPU to get some parameter that are |
| 969 | needed before check_bugs. Everything advanced is in identify_cpu |
| 970 | below. */ |
Thomas Gleixner | 8c61b90 | 2008-01-30 13:30:16 +0100 | [diff] [blame] | 971 | static void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | { |
Yinghai Lu | a860b63 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 973 | u32 tfms, xlvl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | |
| 975 | c->loops_per_jiffy = loops_per_jiffy; |
| 976 | c->x86_cache_size = -1; |
| 977 | c->x86_vendor = X86_VENDOR_UNKNOWN; |
| 978 | c->x86_model = c->x86_mask = 0; /* So far unknown... */ |
| 979 | c->x86_vendor_id[0] = '\0'; /* Unset */ |
| 980 | c->x86_model_id[0] = '\0'; /* Unset */ |
| 981 | c->x86_clflush_size = 64; |
| 982 | c->x86_cache_alignment = c->x86_clflush_size; |
Siddha, Suresh B | 94605ef | 2005-11-05 17:25:54 +0100 | [diff] [blame] | 983 | c->x86_max_cores = 1; |
Yinghai Lu | a860b63 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 984 | c->x86_coreid_bits = 0; |
Andi Kleen | ebfcaa9 | 2005-04-16 15:25:18 -0700 | [diff] [blame] | 985 | c->extended_cpuid_level = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | memset(&c->x86_capability, 0, sizeof c->x86_capability); |
| 987 | |
| 988 | /* Get vendor name */ |
| 989 | cpuid(0x00000000, (unsigned int *)&c->cpuid_level, |
| 990 | (unsigned int *)&c->x86_vendor_id[0], |
| 991 | (unsigned int *)&c->x86_vendor_id[8], |
| 992 | (unsigned int *)&c->x86_vendor_id[4]); |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 993 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | get_cpu_vendor(c); |
| 995 | |
| 996 | /* Initialize the standard set of capabilities */ |
| 997 | /* Note that the vendor-specific code below might override */ |
| 998 | |
| 999 | /* Intel-defined flags: level 0x00000001 */ |
| 1000 | if (c->cpuid_level >= 0x00000001) { |
| 1001 | __u32 misc; |
| 1002 | cpuid(0x00000001, &tfms, &misc, &c->x86_capability[4], |
| 1003 | &c->x86_capability[0]); |
| 1004 | c->x86 = (tfms >> 8) & 0xf; |
| 1005 | c->x86_model = (tfms >> 4) & 0xf; |
| 1006 | c->x86_mask = tfms & 0xf; |
Suresh Siddha | f5f786d | 2005-11-05 17:25:53 +0100 | [diff] [blame] | 1007 | if (c->x86 == 0xf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | c->x86 += (tfms >> 20) & 0xff; |
Suresh Siddha | f5f786d | 2005-11-05 17:25:53 +0100 | [diff] [blame] | 1009 | if (c->x86 >= 0x6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | c->x86_model += ((tfms >> 16) & 0xF) << 4; |
Ingo Molnar | 9716951 | 2008-02-26 08:54:01 +0100 | [diff] [blame] | 1011 | if (test_cpu_cap(c, X86_FEATURE_CLFLSH)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | c->x86_clflush_size = ((misc >> 8) & 0xff) * 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | } else { |
| 1014 | /* Have CPUID level 0 only - unheard of */ |
| 1015 | c->x86 = 4; |
| 1016 | } |
Andi Kleen | a158608 | 2005-05-16 21:53:21 -0700 | [diff] [blame] | 1017 | |
Yinghai Lu | 01aaea1 | 2008-03-06 13:46:39 -0800 | [diff] [blame] | 1018 | c->initial_apicid = (cpuid_ebx(1) >> 24) & 0xff; |
Andi Kleen | a158608 | 2005-05-16 21:53:21 -0700 | [diff] [blame] | 1019 | #ifdef CONFIG_SMP |
Yinghai Lu | 01aaea1 | 2008-03-06 13:46:39 -0800 | [diff] [blame] | 1020 | c->phys_proc_id = c->initial_apicid; |
Andi Kleen | a158608 | 2005-05-16 21:53:21 -0700 | [diff] [blame] | 1021 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | /* AMD-defined flags: level 0x80000001 */ |
| 1023 | xlvl = cpuid_eax(0x80000000); |
Andi Kleen | ebfcaa9 | 2005-04-16 15:25:18 -0700 | [diff] [blame] | 1024 | c->extended_cpuid_level = xlvl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | if ((xlvl & 0xffff0000) == 0x80000000) { |
| 1026 | if (xlvl >= 0x80000001) { |
| 1027 | c->x86_capability[1] = cpuid_edx(0x80000001); |
H. Peter Anvin | 5b7abc6 | 2005-05-01 08:58:49 -0700 | [diff] [blame] | 1028 | c->x86_capability[6] = cpuid_ecx(0x80000001); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | } |
| 1030 | if (xlvl >= 0x80000004) |
| 1031 | get_model_name(c); /* Default name */ |
| 1032 | } |
| 1033 | |
| 1034 | /* Transmeta-defined flags: level 0x80860001 */ |
| 1035 | xlvl = cpuid_eax(0x80860000); |
| 1036 | if ((xlvl & 0xffff0000) == 0x80860000) { |
| 1037 | /* Don't set x86_cpuid_level here for now to not confuse. */ |
| 1038 | if (xlvl >= 0x80860001) |
| 1039 | c->x86_capability[2] = cpuid_edx(0x80860001); |
| 1040 | } |
| 1041 | |
Andreas Herrmann | 9566e91 | 2008-01-30 13:32:41 +0100 | [diff] [blame] | 1042 | c->extended_cpuid_level = cpuid_eax(0x80000000); |
| 1043 | if (c->extended_cpuid_level >= 0x80000007) |
| 1044 | c->x86_power = cpuid_edx(0x80000007); |
| 1045 | |
Yinghai Lu | 9307cac | 2008-03-24 23:24:34 -0700 | [diff] [blame] | 1046 | |
| 1047 | clear_cpu_cap(c, X86_FEATURE_PAT); |
| 1048 | |
Yinghai Lu | a860b63 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 1049 | switch (c->x86_vendor) { |
| 1050 | case X86_VENDOR_AMD: |
| 1051 | early_init_amd(c); |
Yinghai Lu | 9307cac | 2008-03-24 23:24:34 -0700 | [diff] [blame] | 1052 | if (c->x86 >= 0xf && c->x86 <= 0x11) |
| 1053 | set_cpu_cap(c, X86_FEATURE_PAT); |
Yinghai Lu | a860b63 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 1054 | break; |
Yinghai Lu | 71617bf | 2008-01-30 13:33:18 +0100 | [diff] [blame] | 1055 | case X86_VENDOR_INTEL: |
| 1056 | early_init_intel(c); |
Yinghai Lu | 9307cac | 2008-03-24 23:24:34 -0700 | [diff] [blame] | 1057 | if (c->x86 == 0xF || (c->x86 == 6 && c->x86_model >= 15)) |
| 1058 | set_cpu_cap(c, X86_FEATURE_PAT); |
Yinghai Lu | 71617bf | 2008-01-30 13:33:18 +0100 | [diff] [blame] | 1059 | break; |
Dave Jones | 0e03eb8 | 2008-03-26 12:09:16 -0400 | [diff] [blame] | 1060 | case X86_VENDOR_CENTAUR: |
| 1061 | early_init_centaur(c); |
| 1062 | break; |
Yinghai Lu | a860b63 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 1063 | } |
| 1064 | |
| 1065 | } |
| 1066 | |
| 1067 | /* |
| 1068 | * This does the hard work of actually picking apart the CPU stuff... |
| 1069 | */ |
| 1070 | void __cpuinit identify_cpu(struct cpuinfo_x86 *c) |
| 1071 | { |
| 1072 | int i; |
| 1073 | |
| 1074 | early_identify_cpu(c); |
| 1075 | |
Venki Pallipadi | 1d67953 | 2007-07-11 12:18:32 -0700 | [diff] [blame] | 1076 | init_scattered_cpuid_features(c); |
| 1077 | |
Siddha, Suresh B | 1e9f28f | 2006-03-27 01:15:22 -0800 | [diff] [blame] | 1078 | c->apicid = phys_pkg_id(0); |
| 1079 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | /* |
| 1081 | * Vendor-specific initialization. In this section we |
| 1082 | * canonicalize the feature flags, meaning if there are |
| 1083 | * features a certain CPU supports which CPUID doesn't |
| 1084 | * tell us, CPUID claiming incorrect flags, or other bugs, |
| 1085 | * we handle them here. |
| 1086 | * |
| 1087 | * At the end of this section, c->x86_capability better |
| 1088 | * indicate the features this CPU genuinely supports! |
| 1089 | */ |
| 1090 | switch (c->x86_vendor) { |
| 1091 | case X86_VENDOR_AMD: |
| 1092 | init_amd(c); |
| 1093 | break; |
| 1094 | |
| 1095 | case X86_VENDOR_INTEL: |
| 1096 | init_intel(c); |
| 1097 | break; |
| 1098 | |
Dave Jones | 0e03eb8 | 2008-03-26 12:09:16 -0400 | [diff] [blame] | 1099 | case X86_VENDOR_CENTAUR: |
| 1100 | init_centaur(c); |
| 1101 | break; |
| 1102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | case X86_VENDOR_UNKNOWN: |
| 1104 | default: |
| 1105 | display_cacheinfo(c); |
| 1106 | break; |
| 1107 | } |
| 1108 | |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 1109 | detect_ht(c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | |
| 1111 | /* |
| 1112 | * On SMP, boot_cpu_data holds the common feature set between |
| 1113 | * all CPUs; so make sure that we indicate which features are |
| 1114 | * common between the CPUs. The first time this routine gets |
| 1115 | * executed, c == &boot_cpu_data. |
| 1116 | */ |
| 1117 | if (c != &boot_cpu_data) { |
| 1118 | /* AND the already accumulated flags with these */ |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 1119 | for (i = 0; i < NCAPINTS; i++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | boot_cpu_data.x86_capability[i] &= c->x86_capability[i]; |
| 1121 | } |
| 1122 | |
Andi Kleen | 7d851c8 | 2008-01-30 13:33:20 +0100 | [diff] [blame] | 1123 | /* Clear all flags overriden by options */ |
| 1124 | for (i = 0; i < NCAPINTS; i++) |
Mikael Pettersson | 12c247a | 2008-02-24 18:27:03 +0100 | [diff] [blame] | 1125 | c->x86_capability[i] &= ~cleared_cpu_caps[i]; |
Andi Kleen | 7d851c8 | 2008-01-30 13:33:20 +0100 | [diff] [blame] | 1126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | #ifdef CONFIG_X86_MCE |
| 1128 | mcheck_init(c); |
| 1129 | #endif |
Hiroshi Shimamoto | 74ff305 | 2008-01-30 13:33:18 +0100 | [diff] [blame] | 1130 | select_idle_routine(c); |
| 1131 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | #ifdef CONFIG_NUMA |
Andi Kleen | 3019e8e | 2005-07-28 21:15:28 -0700 | [diff] [blame] | 1133 | numa_add_cpu(smp_processor_id()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | #endif |
Andi Kleen | 2b16a23 | 2008-01-30 13:32:40 +0100 | [diff] [blame] | 1135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | |
Glauber de Oliveira Costa | 7a636af | 2008-03-19 14:25:02 -0300 | [diff] [blame] | 1138 | void __cpuinit identify_boot_cpu(void) |
| 1139 | { |
| 1140 | identify_cpu(&boot_cpu_data); |
| 1141 | } |
| 1142 | |
| 1143 | void __cpuinit identify_secondary_cpu(struct cpuinfo_x86 *c) |
| 1144 | { |
| 1145 | BUG_ON(c == &boot_cpu_data); |
| 1146 | identify_cpu(c); |
| 1147 | mtrr_ap_init(); |
| 1148 | } |
| 1149 | |
Andi Kleen | 191679f | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 1150 | static __init int setup_noclflush(char *arg) |
| 1151 | { |
| 1152 | setup_clear_cpu_cap(X86_FEATURE_CLFLSH); |
| 1153 | return 1; |
| 1154 | } |
| 1155 | __setup("noclflush", setup_noclflush); |
| 1156 | |
Ashok Raj | e6982c6 | 2005-06-25 14:54:58 -0700 | [diff] [blame] | 1157 | void __cpuinit print_cpu_info(struct cpuinfo_x86 *c) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | { |
| 1159 | if (c->x86_model_id[0]) |
Marcin Slusarz | d8ff0bb | 2008-02-01 21:31:51 +0100 | [diff] [blame] | 1160 | printk(KERN_CONT "%s", c->x86_model_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 1162 | if (c->x86_mask || c->cpuid_level >= 0) |
| 1163 | printk(KERN_CONT " stepping %02x\n", c->x86_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | else |
Thomas Gleixner | 04e1ba8 | 2008-01-30 13:30:39 +0100 | [diff] [blame] | 1165 | printk(KERN_CONT "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | } |
| 1167 | |
Andi Kleen | ac72e78 | 2008-01-30 13:33:21 +0100 | [diff] [blame] | 1168 | static __init int setup_disablecpuid(char *arg) |
| 1169 | { |
| 1170 | int bit; |
| 1171 | if (get_option(&arg, &bit) && bit < NCAPINTS*32) |
| 1172 | setup_clear_cpu_cap(bit); |
| 1173 | else |
| 1174 | return 0; |
| 1175 | return 1; |
| 1176 | } |
| 1177 | __setup("clearcpuid=", setup_disablecpuid); |