Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/arch/x86-64/kernel/setup.c | |
3 | * | |
4 | * Copyright (C) 1995 Linus Torvalds | |
5 | * | |
6 | * Nov 2001 Dave Jones <davej@suse.de> | |
7 | * Forked from i386 setup code. | |
1da177e4 LT |
8 | */ |
9 | ||
10 | /* | |
11 | * This file handles the architecture-dependent parts of initialization | |
12 | */ | |
13 | ||
14 | #include <linux/errno.h> | |
15 | #include <linux/sched.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/mm.h> | |
18 | #include <linux/stddef.h> | |
19 | #include <linux/unistd.h> | |
20 | #include <linux/ptrace.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/user.h> | |
23 | #include <linux/a.out.h> | |
894673ee | 24 | #include <linux/screen_info.h> |
1da177e4 LT |
25 | #include <linux/ioport.h> |
26 | #include <linux/delay.h> | |
1da177e4 LT |
27 | #include <linux/init.h> |
28 | #include <linux/initrd.h> | |
29 | #include <linux/highmem.h> | |
30 | #include <linux/bootmem.h> | |
31 | #include <linux/module.h> | |
32 | #include <asm/processor.h> | |
33 | #include <linux/console.h> | |
34 | #include <linux/seq_file.h> | |
aac04b32 | 35 | #include <linux/crash_dump.h> |
1da177e4 LT |
36 | #include <linux/root_dev.h> |
37 | #include <linux/pci.h> | |
38 | #include <linux/acpi.h> | |
39 | #include <linux/kallsyms.h> | |
40 | #include <linux/edd.h> | |
bbfceef4 | 41 | #include <linux/mmzone.h> |
5f5609df | 42 | #include <linux/kexec.h> |
95235ca2 | 43 | #include <linux/cpufreq.h> |
e9928674 | 44 | #include <linux/dmi.h> |
17a941d8 | 45 | #include <linux/dma-mapping.h> |
681558fd | 46 | #include <linux/ctype.h> |
bbfceef4 | 47 | |
1da177e4 LT |
48 | #include <asm/mtrr.h> |
49 | #include <asm/uaccess.h> | |
50 | #include <asm/system.h> | |
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> | |
58 | #include <asm/mpspec.h> | |
59 | #include <asm/mmu_context.h> | |
60 | #include <asm/bootsetup.h> | |
61 | #include <asm/proto.h> | |
62 | #include <asm/setup.h> | |
63 | #include <asm/mach_apic.h> | |
64 | #include <asm/numa.h> | |
2bc0414e | 65 | #include <asm/sections.h> |
f2d3efed | 66 | #include <asm/dmi.h> |
1da177e4 LT |
67 | |
68 | /* | |
69 | * Machine setup.. | |
70 | */ | |
71 | ||
6c231b7b | 72 | struct cpuinfo_x86 boot_cpu_data __read_mostly; |
2ee60e17 | 73 | EXPORT_SYMBOL(boot_cpu_data); |
1da177e4 LT |
74 | |
75 | unsigned long mmu_cr4_features; | |
76 | ||
1da177e4 LT |
77 | /* Boot loader ID as an integer, for the benefit of proc_dointvec */ |
78 | int bootloader_type; | |
79 | ||
80 | unsigned long saved_video_mode; | |
81 | ||
f2d3efed AK |
82 | /* |
83 | * Early DMI memory | |
84 | */ | |
85 | int dmi_alloc_index; | |
86 | char dmi_alloc_data[DMI_MAX_DATA]; | |
87 | ||
1da177e4 LT |
88 | /* |
89 | * Setup options | |
90 | */ | |
1da177e4 | 91 | struct screen_info screen_info; |
2ee60e17 | 92 | EXPORT_SYMBOL(screen_info); |
1da177e4 LT |
93 | struct sys_desc_table_struct { |
94 | unsigned short length; | |
95 | unsigned char table[0]; | |
96 | }; | |
97 | ||
98 | struct edid_info edid_info; | |
ba70710e | 99 | EXPORT_SYMBOL_GPL(edid_info); |
1da177e4 LT |
100 | |
101 | extern int root_mountflags; | |
1da177e4 | 102 | |
adf48856 | 103 | char __initdata command_line[COMMAND_LINE_SIZE]; |
1da177e4 LT |
104 | |
105 | struct resource standard_io_resources[] = { | |
106 | { .name = "dma1", .start = 0x00, .end = 0x1f, | |
107 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
108 | { .name = "pic1", .start = 0x20, .end = 0x21, | |
109 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
110 | { .name = "timer0", .start = 0x40, .end = 0x43, | |
111 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
112 | { .name = "timer1", .start = 0x50, .end = 0x53, | |
113 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
114 | { .name = "keyboard", .start = 0x60, .end = 0x6f, | |
115 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
116 | { .name = "dma page reg", .start = 0x80, .end = 0x8f, | |
117 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
118 | { .name = "pic2", .start = 0xa0, .end = 0xa1, | |
119 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
120 | { .name = "dma2", .start = 0xc0, .end = 0xdf, | |
121 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
122 | { .name = "fpu", .start = 0xf0, .end = 0xff, | |
123 | .flags = IORESOURCE_BUSY | IORESOURCE_IO } | |
124 | }; | |
125 | ||
1da177e4 LT |
126 | #define IORESOURCE_RAM (IORESOURCE_BUSY | IORESOURCE_MEM) |
127 | ||
128 | struct resource data_resource = { | |
129 | .name = "Kernel data", | |
130 | .start = 0, | |
131 | .end = 0, | |
132 | .flags = IORESOURCE_RAM, | |
133 | }; | |
134 | struct resource code_resource = { | |
135 | .name = "Kernel code", | |
136 | .start = 0, | |
137 | .end = 0, | |
138 | .flags = IORESOURCE_RAM, | |
139 | }; | |
140 | ||
141 | #define IORESOURCE_ROM (IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM) | |
142 | ||
143 | static struct resource system_rom_resource = { | |
144 | .name = "System ROM", | |
145 | .start = 0xf0000, | |
146 | .end = 0xfffff, | |
147 | .flags = IORESOURCE_ROM, | |
148 | }; | |
149 | ||
150 | static struct resource extension_rom_resource = { | |
151 | .name = "Extension ROM", | |
152 | .start = 0xe0000, | |
153 | .end = 0xeffff, | |
154 | .flags = IORESOURCE_ROM, | |
155 | }; | |
156 | ||
157 | static struct resource adapter_rom_resources[] = { | |
158 | { .name = "Adapter ROM", .start = 0xc8000, .end = 0, | |
159 | .flags = IORESOURCE_ROM }, | |
160 | { .name = "Adapter ROM", .start = 0, .end = 0, | |
161 | .flags = IORESOURCE_ROM }, | |
162 | { .name = "Adapter ROM", .start = 0, .end = 0, | |
163 | .flags = IORESOURCE_ROM }, | |
164 | { .name = "Adapter ROM", .start = 0, .end = 0, | |
165 | .flags = IORESOURCE_ROM }, | |
166 | { .name = "Adapter ROM", .start = 0, .end = 0, | |
167 | .flags = IORESOURCE_ROM }, | |
168 | { .name = "Adapter ROM", .start = 0, .end = 0, | |
169 | .flags = IORESOURCE_ROM } | |
170 | }; | |
171 | ||
1da177e4 LT |
172 | static struct resource video_rom_resource = { |
173 | .name = "Video ROM", | |
174 | .start = 0xc0000, | |
175 | .end = 0xc7fff, | |
176 | .flags = IORESOURCE_ROM, | |
177 | }; | |
178 | ||
179 | static struct resource video_ram_resource = { | |
180 | .name = "Video RAM area", | |
181 | .start = 0xa0000, | |
182 | .end = 0xbffff, | |
183 | .flags = IORESOURCE_RAM, | |
184 | }; | |
185 | ||
186 | #define romsignature(x) (*(unsigned short *)(x) == 0xaa55) | |
187 | ||
188 | static int __init romchecksum(unsigned char *rom, unsigned long length) | |
189 | { | |
190 | unsigned char *p, sum = 0; | |
191 | ||
192 | for (p = rom; p < rom + length; p++) | |
193 | sum += *p; | |
194 | return sum == 0; | |
195 | } | |
196 | ||
197 | static void __init probe_roms(void) | |
198 | { | |
199 | unsigned long start, length, upper; | |
200 | unsigned char *rom; | |
201 | int i; | |
202 | ||
203 | /* video rom */ | |
204 | upper = adapter_rom_resources[0].start; | |
205 | for (start = video_rom_resource.start; start < upper; start += 2048) { | |
206 | rom = isa_bus_to_virt(start); | |
207 | if (!romsignature(rom)) | |
208 | continue; | |
209 | ||
210 | video_rom_resource.start = start; | |
211 | ||
212 | /* 0 < length <= 0x7f * 512, historically */ | |
213 | length = rom[2] * 512; | |
214 | ||
215 | /* if checksum okay, trust length byte */ | |
216 | if (length && romchecksum(rom, length)) | |
217 | video_rom_resource.end = start + length - 1; | |
218 | ||
219 | request_resource(&iomem_resource, &video_rom_resource); | |
220 | break; | |
221 | } | |
222 | ||
223 | start = (video_rom_resource.end + 1 + 2047) & ~2047UL; | |
224 | if (start < upper) | |
225 | start = upper; | |
226 | ||
227 | /* system rom */ | |
228 | request_resource(&iomem_resource, &system_rom_resource); | |
229 | upper = system_rom_resource.start; | |
230 | ||
231 | /* check for extension rom (ignore length byte!) */ | |
232 | rom = isa_bus_to_virt(extension_rom_resource.start); | |
233 | if (romsignature(rom)) { | |
234 | length = extension_rom_resource.end - extension_rom_resource.start + 1; | |
235 | if (romchecksum(rom, length)) { | |
236 | request_resource(&iomem_resource, &extension_rom_resource); | |
237 | upper = extension_rom_resource.start; | |
238 | } | |
239 | } | |
240 | ||
241 | /* check for adapter roms on 2k boundaries */ | |
9d0ef4fd AK |
242 | for (i = 0; i < ARRAY_SIZE(adapter_rom_resources) && start < upper; |
243 | start += 2048) { | |
1da177e4 LT |
244 | rom = isa_bus_to_virt(start); |
245 | if (!romsignature(rom)) | |
246 | continue; | |
247 | ||
248 | /* 0 < length <= 0x7f * 512, historically */ | |
249 | length = rom[2] * 512; | |
250 | ||
251 | /* but accept any length that fits if checksum okay */ | |
252 | if (!length || start + length > upper || !romchecksum(rom, length)) | |
253 | continue; | |
254 | ||
255 | adapter_rom_resources[i].start = start; | |
256 | adapter_rom_resources[i].end = start + length - 1; | |
257 | request_resource(&iomem_resource, &adapter_rom_resources[i]); | |
258 | ||
259 | start = adapter_rom_resources[i++].end & ~2047UL; | |
260 | } | |
261 | } | |
262 | ||
2c8c0e6b AK |
263 | #ifdef CONFIG_PROC_VMCORE |
264 | /* elfcorehdr= specifies the location of elf core header | |
265 | * stored by the crashed kernel. This option will be passed | |
266 | * by kexec loader to the capture kernel. | |
267 | */ | |
268 | static int __init setup_elfcorehdr(char *arg) | |
681558fd | 269 | { |
2c8c0e6b AK |
270 | char *end; |
271 | if (!arg) | |
272 | return -EINVAL; | |
273 | elfcorehdr_addr = memparse(arg, &end); | |
274 | return end > arg ? 0 : -EINVAL; | |
681558fd | 275 | } |
2c8c0e6b | 276 | early_param("elfcorehdr", setup_elfcorehdr); |
e2c03888 AK |
277 | #endif |
278 | ||
2b97690f | 279 | #ifndef CONFIG_NUMA |
bbfceef4 MT |
280 | static void __init |
281 | contig_initmem_init(unsigned long start_pfn, unsigned long end_pfn) | |
1da177e4 | 282 | { |
bbfceef4 MT |
283 | unsigned long bootmap_size, bootmap; |
284 | ||
bbfceef4 MT |
285 | bootmap_size = bootmem_bootmap_pages(end_pfn)<<PAGE_SHIFT; |
286 | bootmap = find_e820_area(0, end_pfn<<PAGE_SHIFT, bootmap_size); | |
287 | if (bootmap == -1L) | |
288 | panic("Cannot find bootmem map of size %ld\n",bootmap_size); | |
289 | bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, end_pfn); | |
5cb248ab MG |
290 | e820_register_active_regions(0, start_pfn, end_pfn); |
291 | free_bootmem_with_active_regions(0, end_pfn); | |
bbfceef4 | 292 | reserve_bootmem(bootmap, bootmap_size); |
1da177e4 LT |
293 | } |
294 | #endif | |
295 | ||
1da177e4 LT |
296 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
297 | struct edd edd; | |
298 | #ifdef CONFIG_EDD_MODULE | |
299 | EXPORT_SYMBOL(edd); | |
300 | #endif | |
301 | /** | |
302 | * copy_edd() - Copy the BIOS EDD information | |
303 | * from boot_params into a safe place. | |
304 | * | |
305 | */ | |
306 | static inline void copy_edd(void) | |
307 | { | |
308 | memcpy(edd.mbr_signature, EDD_MBR_SIGNATURE, sizeof(edd.mbr_signature)); | |
309 | memcpy(edd.edd_info, EDD_BUF, sizeof(edd.edd_info)); | |
310 | edd.mbr_signature_nr = EDD_MBR_SIG_NR; | |
311 | edd.edd_info_nr = EDD_NR; | |
312 | } | |
313 | #else | |
314 | static inline void copy_edd(void) | |
315 | { | |
316 | } | |
317 | #endif | |
318 | ||
319 | #define EBDA_ADDR_POINTER 0x40E | |
ac71d12c AK |
320 | |
321 | unsigned __initdata ebda_addr; | |
322 | unsigned __initdata ebda_size; | |
323 | ||
324 | static void discover_ebda(void) | |
1da177e4 | 325 | { |
ac71d12c | 326 | /* |
1da177e4 LT |
327 | * there is a real-mode segmented pointer pointing to the |
328 | * 4K EBDA area at 0x40E | |
329 | */ | |
ac71d12c AK |
330 | ebda_addr = *(unsigned short *)EBDA_ADDR_POINTER; |
331 | ebda_addr <<= 4; | |
332 | ||
333 | ebda_size = *(unsigned short *)(unsigned long)ebda_addr; | |
334 | ||
335 | /* Round EBDA up to pages */ | |
336 | if (ebda_size == 0) | |
337 | ebda_size = 1; | |
338 | ebda_size <<= 10; | |
339 | ebda_size = round_up(ebda_size + (ebda_addr & ~PAGE_MASK), PAGE_SIZE); | |
340 | if (ebda_size > 64*1024) | |
341 | ebda_size = 64*1024; | |
1da177e4 LT |
342 | } |
343 | ||
344 | void __init setup_arch(char **cmdline_p) | |
345 | { | |
adf48856 | 346 | printk(KERN_INFO "Command line: %s\n", boot_command_line); |
43c85c9c | 347 | |
1da177e4 | 348 | ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV); |
1da177e4 LT |
349 | screen_info = SCREEN_INFO; |
350 | edid_info = EDID_INFO; | |
351 | saved_video_mode = SAVED_VIDEO_MODE; | |
352 | bootloader_type = LOADER_TYPE; | |
353 | ||
354 | #ifdef CONFIG_BLK_DEV_RAM | |
355 | rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK; | |
356 | rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0); | |
357 | rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0); | |
358 | #endif | |
359 | setup_memory_region(); | |
360 | copy_edd(); | |
361 | ||
362 | if (!MOUNT_ROOT_RDONLY) | |
363 | root_mountflags &= ~MS_RDONLY; | |
364 | init_mm.start_code = (unsigned long) &_text; | |
365 | init_mm.end_code = (unsigned long) &_etext; | |
366 | init_mm.end_data = (unsigned long) &_edata; | |
367 | init_mm.brk = (unsigned long) &_end; | |
368 | ||
369 | code_resource.start = virt_to_phys(&_text); | |
370 | code_resource.end = virt_to_phys(&_etext)-1; | |
371 | data_resource.start = virt_to_phys(&_etext); | |
372 | data_resource.end = virt_to_phys(&_edata)-1; | |
373 | ||
1da177e4 LT |
374 | early_identify_cpu(&boot_cpu_data); |
375 | ||
adf48856 | 376 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
2c8c0e6b AK |
377 | *cmdline_p = command_line; |
378 | ||
379 | parse_early_param(); | |
380 | ||
381 | finish_e820_parsing(); | |
9ca33eb6 | 382 | |
5cb248ab | 383 | e820_register_active_regions(0, 0, -1UL); |
1da177e4 LT |
384 | /* |
385 | * partially used pages are not usable - thus | |
386 | * we are rounding upwards: | |
387 | */ | |
388 | end_pfn = e820_end_of_ram(); | |
caff0710 | 389 | num_physpages = end_pfn; |
1da177e4 LT |
390 | |
391 | check_efer(); | |
392 | ||
ac71d12c AK |
393 | discover_ebda(); |
394 | ||
1da177e4 LT |
395 | init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT)); |
396 | ||
f2d3efed AK |
397 | dmi_scan_machine(); |
398 | ||
f6c2e333 SS |
399 | zap_low_mappings(0); |
400 | ||
888ba6c6 | 401 | #ifdef CONFIG_ACPI |
1da177e4 LT |
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 | ||
caff0710 JB |
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 | ||
5cb248ab MG |
414 | /* Remove active ranges so rediscovery with NUMA-awareness happens */ |
415 | remove_all_active_ranges(); | |
416 | ||
1da177e4 LT |
417 | #ifdef CONFIG_ACPI_NUMA |
418 | /* | |
419 | * Parse SRAT to discover nodes. | |
420 | */ | |
421 | acpi_numa_init(); | |
422 | #endif | |
423 | ||
2b97690f | 424 | #ifdef CONFIG_NUMA |
1da177e4 LT |
425 | numa_initmem_init(0, end_pfn); |
426 | #else | |
bbfceef4 | 427 | contig_initmem_init(0, end_pfn); |
1da177e4 LT |
428 | #endif |
429 | ||
430 | /* Reserve direct mapping */ | |
431 | reserve_bootmem_generic(table_start << PAGE_SHIFT, | |
432 | (table_end - table_start) << PAGE_SHIFT); | |
433 | ||
434 | /* reserve kernel */ | |
ceee8822 AK |
435 | reserve_bootmem_generic(__pa_symbol(&_text), |
436 | __pa_symbol(&_end) - __pa_symbol(&_text)); | |
1da177e4 LT |
437 | |
438 | /* | |
439 | * reserve physical page 0 - it's a special BIOS page on many boxes, | |
440 | * enabling clean reboots, SMP operation, laptop functions. | |
441 | */ | |
442 | reserve_bootmem_generic(0, PAGE_SIZE); | |
443 | ||
444 | /* reserve ebda region */ | |
ac71d12c AK |
445 | if (ebda_addr) |
446 | reserve_bootmem_generic(ebda_addr, ebda_size); | |
076422d2 AS |
447 | #ifdef CONFIG_NUMA |
448 | /* reserve nodemap region */ | |
449 | if (nodemap_addr) | |
450 | reserve_bootmem_generic(nodemap_addr, nodemap_size); | |
451 | #endif | |
1da177e4 LT |
452 | |
453 | #ifdef CONFIG_SMP | |
454 | /* | |
455 | * But first pinch a few for the stack/trampoline stuff | |
456 | * FIXME: Don't need the extra page at 4K, but need to fix | |
457 | * trampoline before removing it. (see the GDT stuff) | |
458 | */ | |
459 | reserve_bootmem_generic(PAGE_SIZE, PAGE_SIZE); | |
460 | ||
461 | /* Reserve SMP trampoline */ | |
462 | reserve_bootmem_generic(SMP_TRAMPOLINE_BASE, PAGE_SIZE); | |
463 | #endif | |
464 | ||
465 | #ifdef CONFIG_ACPI_SLEEP | |
466 | /* | |
467 | * Reserve low memory region for sleep support. | |
468 | */ | |
469 | acpi_reserve_bootmem(); | |
470 | #endif | |
1da177e4 LT |
471 | /* |
472 | * Find and reserve possible boot-time SMP configuration: | |
473 | */ | |
474 | find_smp_config(); | |
1da177e4 LT |
475 | #ifdef CONFIG_BLK_DEV_INITRD |
476 | if (LOADER_TYPE && INITRD_START) { | |
477 | if (INITRD_START + INITRD_SIZE <= (end_pfn << PAGE_SHIFT)) { | |
478 | reserve_bootmem_generic(INITRD_START, INITRD_SIZE); | |
19e5d9c0 | 479 | initrd_start = INITRD_START + PAGE_OFFSET; |
1da177e4 LT |
480 | initrd_end = initrd_start+INITRD_SIZE; |
481 | } | |
482 | else { | |
483 | printk(KERN_ERR "initrd extends beyond end of memory " | |
484 | "(0x%08lx > 0x%08lx)\ndisabling initrd\n", | |
485 | (unsigned long)(INITRD_START + INITRD_SIZE), | |
486 | (unsigned long)(end_pfn << PAGE_SHIFT)); | |
487 | initrd_start = 0; | |
488 | } | |
489 | } | |
490 | #endif | |
5f5609df EB |
491 | #ifdef CONFIG_KEXEC |
492 | if (crashk_res.start != crashk_res.end) { | |
00212fef | 493 | reserve_bootmem_generic(crashk_res.start, |
5f5609df EB |
494 | crashk_res.end - crashk_res.start + 1); |
495 | } | |
496 | #endif | |
0d317fb7 | 497 | |
1da177e4 LT |
498 | paging_init(); |
499 | ||
f157cbb1 | 500 | #ifdef CONFIG_PCI |
dfa4698c | 501 | early_quirks(); |
f157cbb1 | 502 | #endif |
1da177e4 | 503 | |
51f62e18 AR |
504 | /* |
505 | * set this early, so we dont allocate cpu0 | |
506 | * if MADT list doesnt list BSP first | |
507 | * mpparse.c/MP_processor_info() allocates logical cpu numbers. | |
508 | */ | |
509 | cpu_set(0, cpu_present_map); | |
888ba6c6 | 510 | #ifdef CONFIG_ACPI |
1da177e4 LT |
511 | /* |
512 | * Read APIC and some other early information from ACPI tables. | |
513 | */ | |
514 | acpi_boot_init(); | |
515 | #endif | |
516 | ||
05b3cbd8 RT |
517 | init_cpu_to_node(); |
518 | ||
1da177e4 LT |
519 | /* |
520 | * get boot-time SMP configuration: | |
521 | */ | |
522 | if (smp_found_config) | |
523 | get_smp_config(); | |
524 | init_apic_mappings(); | |
1da177e4 LT |
525 | |
526 | /* | |
527 | * Request address space for all standard RAM and ROM resources | |
528 | * and also for regions reported as reserved by the e820. | |
529 | */ | |
530 | probe_roms(); | |
531 | e820_reserve_resources(); | |
e8eff5ac | 532 | e820_mark_nosave_regions(); |
1da177e4 LT |
533 | |
534 | request_resource(&iomem_resource, &video_ram_resource); | |
535 | ||
536 | { | |
537 | unsigned i; | |
538 | /* request I/O space for devices used on all i[345]86 PCs */ | |
9d0ef4fd | 539 | for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) |
1da177e4 LT |
540 | request_resource(&ioport_resource, &standard_io_resources[i]); |
541 | } | |
542 | ||
a1e97782 | 543 | e820_setup_gap(); |
1da177e4 | 544 | |
1da177e4 LT |
545 | #ifdef CONFIG_VT |
546 | #if defined(CONFIG_VGA_CONSOLE) | |
547 | conswitchp = &vga_con; | |
548 | #elif defined(CONFIG_DUMMY_CONSOLE) | |
549 | conswitchp = &dummy_con; | |
550 | #endif | |
551 | #endif | |
552 | } | |
553 | ||
e6982c67 | 554 | static int __cpuinit get_model_name(struct cpuinfo_x86 *c) |
1da177e4 LT |
555 | { |
556 | unsigned int *v; | |
557 | ||
ebfcaa96 | 558 | if (c->extended_cpuid_level < 0x80000004) |
1da177e4 LT |
559 | return 0; |
560 | ||
561 | v = (unsigned int *) c->x86_model_id; | |
562 | cpuid(0x80000002, &v[0], &v[1], &v[2], &v[3]); | |
563 | cpuid(0x80000003, &v[4], &v[5], &v[6], &v[7]); | |
564 | cpuid(0x80000004, &v[8], &v[9], &v[10], &v[11]); | |
565 | c->x86_model_id[48] = 0; | |
566 | return 1; | |
567 | } | |
568 | ||
569 | ||
e6982c67 | 570 | static void __cpuinit display_cacheinfo(struct cpuinfo_x86 *c) |
1da177e4 LT |
571 | { |
572 | unsigned int n, dummy, eax, ebx, ecx, edx; | |
573 | ||
ebfcaa96 | 574 | n = c->extended_cpuid_level; |
1da177e4 LT |
575 | |
576 | if (n >= 0x80000005) { | |
577 | cpuid(0x80000005, &dummy, &ebx, &ecx, &edx); | |
578 | printk(KERN_INFO "CPU: L1 I Cache: %dK (%d bytes/line), D cache %dK (%d bytes/line)\n", | |
579 | edx>>24, edx&0xFF, ecx>>24, ecx&0xFF); | |
580 | c->x86_cache_size=(ecx>>24)+(edx>>24); | |
581 | /* On K8 L1 TLB is inclusive, so don't count it */ | |
582 | c->x86_tlbsize = 0; | |
583 | } | |
584 | ||
585 | if (n >= 0x80000006) { | |
586 | cpuid(0x80000006, &dummy, &ebx, &ecx, &edx); | |
587 | ecx = cpuid_ecx(0x80000006); | |
588 | c->x86_cache_size = ecx >> 16; | |
589 | c->x86_tlbsize += ((ebx >> 16) & 0xfff) + (ebx & 0xfff); | |
590 | ||
591 | printk(KERN_INFO "CPU: L2 Cache: %dK (%d bytes/line)\n", | |
592 | c->x86_cache_size, ecx & 0xFF); | |
593 | } | |
594 | ||
595 | if (n >= 0x80000007) | |
596 | cpuid(0x80000007, &dummy, &dummy, &dummy, &c->x86_power); | |
597 | if (n >= 0x80000008) { | |
598 | cpuid(0x80000008, &eax, &dummy, &dummy, &dummy); | |
599 | c->x86_virt_bits = (eax >> 8) & 0xff; | |
600 | c->x86_phys_bits = eax & 0xff; | |
601 | } | |
602 | } | |
603 | ||
3f098c26 AK |
604 | #ifdef CONFIG_NUMA |
605 | static int nearby_node(int apicid) | |
606 | { | |
607 | int i; | |
608 | for (i = apicid - 1; i >= 0; i--) { | |
609 | int node = apicid_to_node[i]; | |
610 | if (node != NUMA_NO_NODE && node_online(node)) | |
611 | return node; | |
612 | } | |
613 | for (i = apicid + 1; i < MAX_LOCAL_APIC; i++) { | |
614 | int node = apicid_to_node[i]; | |
615 | if (node != NUMA_NO_NODE && node_online(node)) | |
616 | return node; | |
617 | } | |
618 | return first_node(node_online_map); /* Shouldn't happen */ | |
619 | } | |
620 | #endif | |
621 | ||
63518644 AK |
622 | /* |
623 | * On a AMD dual core setup the lower bits of the APIC id distingush the cores. | |
624 | * Assumes number of cores is a power of two. | |
625 | */ | |
626 | static void __init amd_detect_cmp(struct cpuinfo_x86 *c) | |
627 | { | |
628 | #ifdef CONFIG_SMP | |
b41e2939 | 629 | unsigned bits; |
3f098c26 | 630 | #ifdef CONFIG_NUMA |
f3fa8ebc | 631 | int cpu = smp_processor_id(); |
3f098c26 | 632 | int node = 0; |
60c1bc82 | 633 | unsigned apicid = hard_smp_processor_id(); |
3f098c26 | 634 | #endif |
faee9a5d | 635 | unsigned ecx = cpuid_ecx(0x80000008); |
b41e2939 | 636 | |
faee9a5d | 637 | c->x86_max_cores = (ecx & 0xff) + 1; |
b41e2939 | 638 | |
faee9a5d AK |
639 | /* CPU telling us the core id bits shift? */ |
640 | bits = (ecx >> 12) & 0xF; | |
641 | ||
642 | /* Otherwise recompute */ | |
643 | if (bits == 0) { | |
644 | while ((1 << bits) < c->x86_max_cores) | |
645 | bits++; | |
646 | } | |
b41e2939 AK |
647 | |
648 | /* Low order bits define the core id (index of core in socket) */ | |
f3fa8ebc | 649 | c->cpu_core_id = c->phys_proc_id & ((1 << bits)-1); |
b41e2939 | 650 | /* Convert the APIC ID into the socket ID */ |
f3fa8ebc | 651 | c->phys_proc_id = phys_pkg_id(bits); |
63518644 AK |
652 | |
653 | #ifdef CONFIG_NUMA | |
f3fa8ebc | 654 | node = c->phys_proc_id; |
3f098c26 AK |
655 | if (apicid_to_node[apicid] != NUMA_NO_NODE) |
656 | node = apicid_to_node[apicid]; | |
657 | if (!node_online(node)) { | |
658 | /* Two possibilities here: | |
659 | - The CPU is missing memory and no node was created. | |
660 | In that case try picking one from a nearby CPU | |
661 | - The APIC IDs differ from the HyperTransport node IDs | |
662 | which the K8 northbridge parsing fills in. | |
663 | Assume they are all increased by a constant offset, | |
664 | but in the same order as the HT nodeids. | |
665 | If that doesn't result in a usable node fall back to the | |
666 | path for the previous case. */ | |
f3fa8ebc | 667 | int ht_nodeid = apicid - (cpu_data[0].phys_proc_id << bits); |
3f098c26 AK |
668 | if (ht_nodeid >= 0 && |
669 | apicid_to_node[ht_nodeid] != NUMA_NO_NODE) | |
670 | node = apicid_to_node[ht_nodeid]; | |
671 | /* Pick a nearby node */ | |
672 | if (!node_online(node)) | |
673 | node = nearby_node(apicid); | |
674 | } | |
69d81fcd | 675 | numa_set_node(cpu, node); |
3f098c26 | 676 | |
e42f9437 | 677 | printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node); |
63518644 | 678 | #endif |
63518644 AK |
679 | #endif |
680 | } | |
1da177e4 | 681 | |
ed77504b | 682 | static void __cpuinit init_amd(struct cpuinfo_x86 *c) |
1da177e4 | 683 | { |
7bcd3f34 | 684 | unsigned level; |
1da177e4 | 685 | |
bc5e8fdf LT |
686 | #ifdef CONFIG_SMP |
687 | unsigned long value; | |
688 | ||
7d318d77 AK |
689 | /* |
690 | * Disable TLB flush filter by setting HWCR.FFDIS on K8 | |
691 | * bit 6 of msr C001_0015 | |
692 | * | |
693 | * Errata 63 for SH-B3 steppings | |
694 | * Errata 122 for all steppings (F+ have it disabled by default) | |
695 | */ | |
696 | if (c->x86 == 15) { | |
697 | rdmsrl(MSR_K8_HWCR, value); | |
698 | value |= 1 << 6; | |
699 | wrmsrl(MSR_K8_HWCR, value); | |
700 | } | |
bc5e8fdf LT |
701 | #endif |
702 | ||
1da177e4 LT |
703 | /* Bit 31 in normal CPUID used for nonstandard 3DNow ID; |
704 | 3DNow is IDd by bit 31 in extended CPUID (1*32+31) anyway */ | |
705 | clear_bit(0*32+31, &c->x86_capability); | |
706 | ||
7bcd3f34 AK |
707 | /* On C+ stepping K8 rep microcode works well for copy/memset */ |
708 | level = cpuid_eax(1); | |
709 | if (c->x86 == 15 && ((level >= 0x0f48 && level < 0x0f50) || level >= 0x0f58)) | |
710 | set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability); | |
711 | ||
18bd057b AK |
712 | /* Enable workaround for FXSAVE leak */ |
713 | if (c->x86 >= 6) | |
714 | set_bit(X86_FEATURE_FXSAVE_LEAK, &c->x86_capability); | |
715 | ||
e42f9437 RS |
716 | level = get_model_name(c); |
717 | if (!level) { | |
1da177e4 LT |
718 | switch (c->x86) { |
719 | case 15: | |
720 | /* Should distinguish Models here, but this is only | |
721 | a fallback anyways. */ | |
722 | strcpy(c->x86_model_id, "Hammer"); | |
723 | break; | |
724 | } | |
725 | } | |
726 | display_cacheinfo(c); | |
727 | ||
130951cc AK |
728 | /* c->x86_power is 8000_0007 edx. Bit 8 is constant TSC */ |
729 | if (c->x86_power & (1<<8)) | |
730 | set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability); | |
731 | ||
faee9a5d AK |
732 | /* Multi core CPU? */ |
733 | if (c->extended_cpuid_level >= 0x80000008) | |
63518644 | 734 | amd_detect_cmp(c); |
1da177e4 | 735 | |
240cd6a8 AK |
736 | /* Fix cpuid4 emulation for more */ |
737 | num_cache_leaves = 3; | |
2049336f | 738 | |
61677965 AK |
739 | /* RDTSC can be speculated around */ |
740 | clear_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability); | |
1da177e4 LT |
741 | } |
742 | ||
e6982c67 | 743 | static void __cpuinit detect_ht(struct cpuinfo_x86 *c) |
1da177e4 LT |
744 | { |
745 | #ifdef CONFIG_SMP | |
746 | u32 eax, ebx, ecx, edx; | |
94605eff | 747 | int index_msb, core_bits; |
94605eff SS |
748 | |
749 | cpuid(1, &eax, &ebx, &ecx, &edx); | |
750 | ||
94605eff | 751 | |
e42f9437 | 752 | if (!cpu_has(c, X86_FEATURE_HT)) |
1da177e4 | 753 | return; |
e42f9437 RS |
754 | if (cpu_has(c, X86_FEATURE_CMP_LEGACY)) |
755 | goto out; | |
1da177e4 | 756 | |
1da177e4 | 757 | smp_num_siblings = (ebx & 0xff0000) >> 16; |
94605eff | 758 | |
1da177e4 LT |
759 | if (smp_num_siblings == 1) { |
760 | printk(KERN_INFO "CPU: Hyper-Threading is disabled\n"); | |
94605eff SS |
761 | } else if (smp_num_siblings > 1 ) { |
762 | ||
1da177e4 LT |
763 | if (smp_num_siblings > NR_CPUS) { |
764 | printk(KERN_WARNING "CPU: Unsupported number of the siblings %d", smp_num_siblings); | |
765 | smp_num_siblings = 1; | |
766 | return; | |
767 | } | |
94605eff SS |
768 | |
769 | index_msb = get_count_order(smp_num_siblings); | |
f3fa8ebc | 770 | c->phys_proc_id = phys_pkg_id(index_msb); |
3dd9d514 | 771 | |
94605eff | 772 | smp_num_siblings = smp_num_siblings / c->x86_max_cores; |
3dd9d514 | 773 | |
94605eff SS |
774 | index_msb = get_count_order(smp_num_siblings) ; |
775 | ||
776 | core_bits = get_count_order(c->x86_max_cores); | |
3dd9d514 | 777 | |
f3fa8ebc | 778 | c->cpu_core_id = phys_pkg_id(index_msb) & |
94605eff | 779 | ((1 << core_bits) - 1); |
1da177e4 | 780 | } |
e42f9437 RS |
781 | out: |
782 | if ((c->x86_max_cores * smp_num_siblings) > 1) { | |
783 | printk(KERN_INFO "CPU: Physical Processor ID: %d\n", c->phys_proc_id); | |
784 | printk(KERN_INFO "CPU: Processor Core ID: %d\n", c->cpu_core_id); | |
785 | } | |
786 | ||
1da177e4 LT |
787 | #endif |
788 | } | |
789 | ||
3dd9d514 AK |
790 | /* |
791 | * find out the number of processor cores on the die | |
792 | */ | |
e6982c67 | 793 | static int __cpuinit intel_num_cpu_cores(struct cpuinfo_x86 *c) |
3dd9d514 | 794 | { |
2bbc419f | 795 | unsigned int eax, t; |
3dd9d514 AK |
796 | |
797 | if (c->cpuid_level < 4) | |
798 | return 1; | |
799 | ||
2bbc419f | 800 | cpuid_count(4, 0, &eax, &t, &t, &t); |
3dd9d514 AK |
801 | |
802 | if (eax & 0x1f) | |
803 | return ((eax >> 26) + 1); | |
804 | else | |
805 | return 1; | |
806 | } | |
807 | ||
df0cc26b AK |
808 | static void srat_detect_node(void) |
809 | { | |
810 | #ifdef CONFIG_NUMA | |
ddea7be0 | 811 | unsigned node; |
df0cc26b | 812 | int cpu = smp_processor_id(); |
e42f9437 | 813 | int apicid = hard_smp_processor_id(); |
df0cc26b AK |
814 | |
815 | /* Don't do the funky fallback heuristics the AMD version employs | |
816 | for now. */ | |
e42f9437 | 817 | node = apicid_to_node[apicid]; |
df0cc26b | 818 | if (node == NUMA_NO_NODE) |
0d015324 | 819 | node = first_node(node_online_map); |
69d81fcd | 820 | numa_set_node(cpu, node); |
df0cc26b | 821 | |
c31fbb1a | 822 | printk(KERN_INFO "CPU %d/%x -> Node %d\n", cpu, apicid, node); |
df0cc26b AK |
823 | #endif |
824 | } | |
825 | ||
e6982c67 | 826 | static void __cpuinit init_intel(struct cpuinfo_x86 *c) |
1da177e4 LT |
827 | { |
828 | /* Cache sizes */ | |
829 | unsigned n; | |
830 | ||
831 | init_intel_cacheinfo(c); | |
0080e667 VP |
832 | if (c->cpuid_level > 9 ) { |
833 | unsigned eax = cpuid_eax(10); | |
834 | /* Check for version and the number of counters */ | |
835 | if ((eax & 0xff) && (((eax>>8) & 0xff) > 1)) | |
836 | set_bit(X86_FEATURE_ARCH_PERFMON, &c->x86_capability); | |
837 | } | |
838 | ||
36b2a8d5 SE |
839 | if (cpu_has_ds) { |
840 | unsigned int l1, l2; | |
841 | rdmsr(MSR_IA32_MISC_ENABLE, l1, l2); | |
ee58fad5 SE |
842 | if (!(l1 & (1<<11))) |
843 | set_bit(X86_FEATURE_BTS, c->x86_capability); | |
36b2a8d5 SE |
844 | if (!(l1 & (1<<12))) |
845 | set_bit(X86_FEATURE_PEBS, c->x86_capability); | |
846 | } | |
847 | ||
ebfcaa96 | 848 | n = c->extended_cpuid_level; |
1da177e4 LT |
849 | if (n >= 0x80000008) { |
850 | unsigned eax = cpuid_eax(0x80000008); | |
851 | c->x86_virt_bits = (eax >> 8) & 0xff; | |
852 | c->x86_phys_bits = eax & 0xff; | |
af9c142d SL |
853 | /* CPUID workaround for Intel 0F34 CPU */ |
854 | if (c->x86_vendor == X86_VENDOR_INTEL && | |
855 | c->x86 == 0xF && c->x86_model == 0x3 && | |
856 | c->x86_mask == 0x4) | |
857 | c->x86_phys_bits = 36; | |
1da177e4 LT |
858 | } |
859 | ||
860 | if (c->x86 == 15) | |
861 | c->x86_cache_alignment = c->x86_clflush_size * 2; | |
39b3a791 AK |
862 | if ((c->x86 == 0xf && c->x86_model >= 0x03) || |
863 | (c->x86 == 0x6 && c->x86_model >= 0x0e)) | |
c29601e9 | 864 | set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability); |
27fbe5b2 AK |
865 | if (c->x86 == 6) |
866 | set_bit(X86_FEATURE_REP_GOOD, &c->x86_capability); | |
f3d73707 AV |
867 | if (c->x86 == 15) |
868 | set_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability); | |
869 | else | |
870 | clear_bit(X86_FEATURE_SYNC_RDTSC, &c->x86_capability); | |
94605eff | 871 | c->x86_max_cores = intel_num_cpu_cores(c); |
df0cc26b AK |
872 | |
873 | srat_detect_node(); | |
1da177e4 LT |
874 | } |
875 | ||
672289e9 | 876 | static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c) |
1da177e4 LT |
877 | { |
878 | char *v = c->x86_vendor_id; | |
879 | ||
880 | if (!strcmp(v, "AuthenticAMD")) | |
881 | c->x86_vendor = X86_VENDOR_AMD; | |
882 | else if (!strcmp(v, "GenuineIntel")) | |
883 | c->x86_vendor = X86_VENDOR_INTEL; | |
884 | else | |
885 | c->x86_vendor = X86_VENDOR_UNKNOWN; | |
886 | } | |
887 | ||
888 | struct cpu_model_info { | |
889 | int vendor; | |
890 | int family; | |
891 | char *model_names[16]; | |
892 | }; | |
893 | ||
894 | /* Do some early cpuid on the boot CPU to get some parameter that are | |
895 | needed before check_bugs. Everything advanced is in identify_cpu | |
896 | below. */ | |
e6982c67 | 897 | void __cpuinit early_identify_cpu(struct cpuinfo_x86 *c) |
1da177e4 LT |
898 | { |
899 | u32 tfms; | |
900 | ||
901 | c->loops_per_jiffy = loops_per_jiffy; | |
902 | c->x86_cache_size = -1; | |
903 | c->x86_vendor = X86_VENDOR_UNKNOWN; | |
904 | c->x86_model = c->x86_mask = 0; /* So far unknown... */ | |
905 | c->x86_vendor_id[0] = '\0'; /* Unset */ | |
906 | c->x86_model_id[0] = '\0'; /* Unset */ | |
907 | c->x86_clflush_size = 64; | |
908 | c->x86_cache_alignment = c->x86_clflush_size; | |
94605eff | 909 | c->x86_max_cores = 1; |
ebfcaa96 | 910 | c->extended_cpuid_level = 0; |
1da177e4 LT |
911 | memset(&c->x86_capability, 0, sizeof c->x86_capability); |
912 | ||
913 | /* Get vendor name */ | |
914 | cpuid(0x00000000, (unsigned int *)&c->cpuid_level, | |
915 | (unsigned int *)&c->x86_vendor_id[0], | |
916 | (unsigned int *)&c->x86_vendor_id[8], | |
917 | (unsigned int *)&c->x86_vendor_id[4]); | |
918 | ||
919 | get_cpu_vendor(c); | |
920 | ||
921 | /* Initialize the standard set of capabilities */ | |
922 | /* Note that the vendor-specific code below might override */ | |
923 | ||
924 | /* Intel-defined flags: level 0x00000001 */ | |
925 | if (c->cpuid_level >= 0x00000001) { | |
926 | __u32 misc; | |
927 | cpuid(0x00000001, &tfms, &misc, &c->x86_capability[4], | |
928 | &c->x86_capability[0]); | |
929 | c->x86 = (tfms >> 8) & 0xf; | |
930 | c->x86_model = (tfms >> 4) & 0xf; | |
931 | c->x86_mask = tfms & 0xf; | |
f5f786d0 | 932 | if (c->x86 == 0xf) |
1da177e4 | 933 | c->x86 += (tfms >> 20) & 0xff; |
f5f786d0 | 934 | if (c->x86 >= 0x6) |
1da177e4 | 935 | c->x86_model += ((tfms >> 16) & 0xF) << 4; |
1da177e4 LT |
936 | if (c->x86_capability[0] & (1<<19)) |
937 | c->x86_clflush_size = ((misc >> 8) & 0xff) * 8; | |
1da177e4 LT |
938 | } else { |
939 | /* Have CPUID level 0 only - unheard of */ | |
940 | c->x86 = 4; | |
941 | } | |
a158608b AK |
942 | |
943 | #ifdef CONFIG_SMP | |
f3fa8ebc | 944 | c->phys_proc_id = (cpuid_ebx(1) >> 24) & 0xff; |
a158608b | 945 | #endif |
1da177e4 LT |
946 | } |
947 | ||
948 | /* | |
949 | * This does the hard work of actually picking apart the CPU stuff... | |
950 | */ | |
e6982c67 | 951 | void __cpuinit identify_cpu(struct cpuinfo_x86 *c) |
1da177e4 LT |
952 | { |
953 | int i; | |
954 | u32 xlvl; | |
955 | ||
956 | early_identify_cpu(c); | |
957 | ||
958 | /* AMD-defined flags: level 0x80000001 */ | |
959 | xlvl = cpuid_eax(0x80000000); | |
ebfcaa96 | 960 | c->extended_cpuid_level = xlvl; |
1da177e4 LT |
961 | if ((xlvl & 0xffff0000) == 0x80000000) { |
962 | if (xlvl >= 0x80000001) { | |
963 | c->x86_capability[1] = cpuid_edx(0x80000001); | |
5b7abc6f | 964 | c->x86_capability[6] = cpuid_ecx(0x80000001); |
1da177e4 LT |
965 | } |
966 | if (xlvl >= 0x80000004) | |
967 | get_model_name(c); /* Default name */ | |
968 | } | |
969 | ||
970 | /* Transmeta-defined flags: level 0x80860001 */ | |
971 | xlvl = cpuid_eax(0x80860000); | |
972 | if ((xlvl & 0xffff0000) == 0x80860000) { | |
973 | /* Don't set x86_cpuid_level here for now to not confuse. */ | |
974 | if (xlvl >= 0x80860001) | |
975 | c->x86_capability[2] = cpuid_edx(0x80860001); | |
976 | } | |
977 | ||
1e9f28fa SS |
978 | c->apicid = phys_pkg_id(0); |
979 | ||
1da177e4 LT |
980 | /* |
981 | * Vendor-specific initialization. In this section we | |
982 | * canonicalize the feature flags, meaning if there are | |
983 | * features a certain CPU supports which CPUID doesn't | |
984 | * tell us, CPUID claiming incorrect flags, or other bugs, | |
985 | * we handle them here. | |
986 | * | |
987 | * At the end of this section, c->x86_capability better | |
988 | * indicate the features this CPU genuinely supports! | |
989 | */ | |
990 | switch (c->x86_vendor) { | |
991 | case X86_VENDOR_AMD: | |
992 | init_amd(c); | |
993 | break; | |
994 | ||
995 | case X86_VENDOR_INTEL: | |
996 | init_intel(c); | |
997 | break; | |
998 | ||
999 | case X86_VENDOR_UNKNOWN: | |
1000 | default: | |
1001 | display_cacheinfo(c); | |
1002 | break; | |
1003 | } | |
1004 | ||
1005 | select_idle_routine(c); | |
1006 | detect_ht(c); | |
1da177e4 LT |
1007 | |
1008 | /* | |
1009 | * On SMP, boot_cpu_data holds the common feature set between | |
1010 | * all CPUs; so make sure that we indicate which features are | |
1011 | * common between the CPUs. The first time this routine gets | |
1012 | * executed, c == &boot_cpu_data. | |
1013 | */ | |
1014 | if (c != &boot_cpu_data) { | |
1015 | /* AND the already accumulated flags with these */ | |
1016 | for (i = 0 ; i < NCAPINTS ; i++) | |
1017 | boot_cpu_data.x86_capability[i] &= c->x86_capability[i]; | |
1018 | } | |
1019 | ||
1020 | #ifdef CONFIG_X86_MCE | |
1021 | mcheck_init(c); | |
1022 | #endif | |
3b520b23 SL |
1023 | if (c == &boot_cpu_data) |
1024 | mtrr_bp_init(); | |
1025 | else | |
1026 | mtrr_ap_init(); | |
1da177e4 | 1027 | #ifdef CONFIG_NUMA |
3019e8eb | 1028 | numa_add_cpu(smp_processor_id()); |
1da177e4 LT |
1029 | #endif |
1030 | } | |
1031 | ||
1032 | ||
e6982c67 | 1033 | void __cpuinit print_cpu_info(struct cpuinfo_x86 *c) |
1da177e4 LT |
1034 | { |
1035 | if (c->x86_model_id[0]) | |
1036 | printk("%s", c->x86_model_id); | |
1037 | ||
1038 | if (c->x86_mask || c->cpuid_level >= 0) | |
1039 | printk(" stepping %02x\n", c->x86_mask); | |
1040 | else | |
1041 | printk("\n"); | |
1042 | } | |
1043 | ||
1044 | /* | |
1045 | * Get CPU information for use by the procfs. | |
1046 | */ | |
1047 | ||
1048 | static int show_cpuinfo(struct seq_file *m, void *v) | |
1049 | { | |
1050 | struct cpuinfo_x86 *c = v; | |
1051 | ||
1052 | /* | |
1053 | * These flag bits must match the definitions in <asm/cpufeature.h>. | |
1054 | * NULL means this bit is undefined or reserved; either way it doesn't | |
1055 | * have meaning as far as Linux is concerned. Note that it's important | |
1056 | * to realize there is a difference between this table and CPUID -- if | |
1057 | * applications want to get the raw CPUID data, they should access | |
1058 | * /dev/cpu/<cpu_nr>/cpuid instead. | |
1059 | */ | |
1060 | static char *x86_cap_flags[] = { | |
1061 | /* Intel-defined */ | |
1062 | "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", | |
1063 | "cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov", | |
1064 | "pat", "pse36", "pn", "clflush", NULL, "dts", "acpi", "mmx", | |
1065 | "fxsr", "sse", "sse2", "ss", "ht", "tm", "ia64", NULL, | |
1066 | ||
1067 | /* AMD-defined */ | |
3c3b73b6 | 1068 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
1da177e4 LT |
1069 | NULL, NULL, NULL, "syscall", NULL, NULL, NULL, NULL, |
1070 | NULL, NULL, NULL, NULL, "nx", NULL, "mmxext", NULL, | |
7b0e8501 | 1071 | NULL, "fxsr_opt", NULL, "rdtscp", NULL, "lm", "3dnowext", "3dnow", |
1da177e4 LT |
1072 | |
1073 | /* Transmeta-defined */ | |
1074 | "recovery", "longrun", NULL, "lrti", NULL, NULL, NULL, NULL, | |
1075 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
1076 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
1077 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
1078 | ||
1079 | /* Other (Linux-defined) */ | |
622dcaf9 | 1080 | "cxmmx", NULL, "cyrix_arr", "centaur_mcr", NULL, |
c29601e9 | 1081 | "constant_tsc", NULL, NULL, |
d167a518 | 1082 | "up", NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
1da177e4 LT |
1083 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
1084 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
1085 | ||
1086 | /* Intel-defined (#2) */ | |
9d95dd84 | 1087 | "pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est", |
dcf10307 DJ |
1088 | "tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL, |
1089 | NULL, NULL, "dca", NULL, NULL, NULL, NULL, NULL, | |
1da177e4 LT |
1090 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
1091 | ||
5b7abc6f PA |
1092 | /* VIA/Cyrix/Centaur-defined */ |
1093 | NULL, NULL, "rng", "rng_en", NULL, NULL, "ace", "ace_en", | |
1094 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
1095 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
1096 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
1097 | ||
1da177e4 | 1098 | /* AMD-defined (#2) */ |
3f98bc49 | 1099 | "lahf_lm", "cmp_legacy", "svm", NULL, "cr8_legacy", NULL, NULL, NULL, |
1da177e4 LT |
1100 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
1101 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
5b7abc6f | 1102 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
1da177e4 LT |
1103 | }; |
1104 | static char *x86_power_flags[] = { | |
1105 | "ts", /* temperature sensor */ | |
1106 | "fid", /* frequency id control */ | |
1107 | "vid", /* voltage id control */ | |
1108 | "ttp", /* thermal trip */ | |
1109 | "tm", | |
3f98bc49 AK |
1110 | "stc", |
1111 | NULL, | |
39b3a791 | 1112 | /* nothing */ /* constant_tsc - moved to flags */ |
1da177e4 LT |
1113 | }; |
1114 | ||
1115 | ||
1116 | #ifdef CONFIG_SMP | |
1117 | if (!cpu_online(c-cpu_data)) | |
1118 | return 0; | |
1119 | #endif | |
1120 | ||
1121 | seq_printf(m,"processor\t: %u\n" | |
1122 | "vendor_id\t: %s\n" | |
1123 | "cpu family\t: %d\n" | |
1124 | "model\t\t: %d\n" | |
1125 | "model name\t: %s\n", | |
1126 | (unsigned)(c-cpu_data), | |
1127 | c->x86_vendor_id[0] ? c->x86_vendor_id : "unknown", | |
1128 | c->x86, | |
1129 | (int)c->x86_model, | |
1130 | c->x86_model_id[0] ? c->x86_model_id : "unknown"); | |
1131 | ||
1132 | if (c->x86_mask || c->cpuid_level >= 0) | |
1133 | seq_printf(m, "stepping\t: %d\n", c->x86_mask); | |
1134 | else | |
1135 | seq_printf(m, "stepping\t: unknown\n"); | |
1136 | ||
1137 | if (cpu_has(c,X86_FEATURE_TSC)) { | |
95235ca2 VP |
1138 | unsigned int freq = cpufreq_quick_get((unsigned)(c-cpu_data)); |
1139 | if (!freq) | |
1140 | freq = cpu_khz; | |
1da177e4 | 1141 | seq_printf(m, "cpu MHz\t\t: %u.%03u\n", |
95235ca2 | 1142 | freq / 1000, (freq % 1000)); |
1da177e4 LT |
1143 | } |
1144 | ||
1145 | /* Cache size */ | |
1146 | if (c->x86_cache_size >= 0) | |
1147 | seq_printf(m, "cache size\t: %d KB\n", c->x86_cache_size); | |
1148 | ||
1149 | #ifdef CONFIG_SMP | |
94605eff | 1150 | if (smp_num_siblings * c->x86_max_cores > 1) { |
db468681 | 1151 | int cpu = c - cpu_data; |
f3fa8ebc | 1152 | seq_printf(m, "physical id\t: %d\n", c->phys_proc_id); |
94605eff | 1153 | seq_printf(m, "siblings\t: %d\n", cpus_weight(cpu_core_map[cpu])); |
f3fa8ebc | 1154 | seq_printf(m, "core id\t\t: %d\n", c->cpu_core_id); |
94605eff | 1155 | seq_printf(m, "cpu cores\t: %d\n", c->booted_cores); |
db468681 | 1156 | } |
1da177e4 LT |
1157 | #endif |
1158 | ||
1159 | seq_printf(m, | |
1160 | "fpu\t\t: yes\n" | |
1161 | "fpu_exception\t: yes\n" | |
1162 | "cpuid level\t: %d\n" | |
1163 | "wp\t\t: yes\n" | |
1164 | "flags\t\t:", | |
1165 | c->cpuid_level); | |
1166 | ||
1167 | { | |
1168 | int i; | |
1169 | for ( i = 0 ; i < 32*NCAPINTS ; i++ ) | |
3d1712c9 | 1170 | if (cpu_has(c, i) && x86_cap_flags[i] != NULL) |
1da177e4 LT |
1171 | seq_printf(m, " %s", x86_cap_flags[i]); |
1172 | } | |
1173 | ||
1174 | seq_printf(m, "\nbogomips\t: %lu.%02lu\n", | |
1175 | c->loops_per_jiffy/(500000/HZ), | |
1176 | (c->loops_per_jiffy/(5000/HZ)) % 100); | |
1177 | ||
1178 | if (c->x86_tlbsize > 0) | |
1179 | seq_printf(m, "TLB size\t: %d 4K pages\n", c->x86_tlbsize); | |
1180 | seq_printf(m, "clflush size\t: %d\n", c->x86_clflush_size); | |
1181 | seq_printf(m, "cache_alignment\t: %d\n", c->x86_cache_alignment); | |
1182 | ||
1183 | seq_printf(m, "address sizes\t: %u bits physical, %u bits virtual\n", | |
1184 | c->x86_phys_bits, c->x86_virt_bits); | |
1185 | ||
1186 | seq_printf(m, "power management:"); | |
1187 | { | |
1188 | unsigned i; | |
1189 | for (i = 0; i < 32; i++) | |
1190 | if (c->x86_power & (1 << i)) { | |
3f98bc49 AK |
1191 | if (i < ARRAY_SIZE(x86_power_flags) && |
1192 | x86_power_flags[i]) | |
1193 | seq_printf(m, "%s%s", | |
1194 | x86_power_flags[i][0]?" ":"", | |
1195 | x86_power_flags[i]); | |
1da177e4 LT |
1196 | else |
1197 | seq_printf(m, " [%d]", i); | |
1198 | } | |
1199 | } | |
1da177e4 | 1200 | |
d31ddaa1 | 1201 | seq_printf(m, "\n\n"); |
1da177e4 LT |
1202 | |
1203 | return 0; | |
1204 | } | |
1205 | ||
1206 | static void *c_start(struct seq_file *m, loff_t *pos) | |
1207 | { | |
1208 | return *pos < NR_CPUS ? cpu_data + *pos : NULL; | |
1209 | } | |
1210 | ||
1211 | static void *c_next(struct seq_file *m, void *v, loff_t *pos) | |
1212 | { | |
1213 | ++*pos; | |
1214 | return c_start(m, pos); | |
1215 | } | |
1216 | ||
1217 | static void c_stop(struct seq_file *m, void *v) | |
1218 | { | |
1219 | } | |
1220 | ||
1221 | struct seq_operations cpuinfo_op = { | |
1222 | .start =c_start, | |
1223 | .next = c_next, | |
1224 | .stop = c_stop, | |
1225 | .show = show_cpuinfo, | |
1226 | }; | |
e9928674 | 1227 | |
9c63f873 | 1228 | #if defined(CONFIG_INPUT_PCSPKR) || defined(CONFIG_INPUT_PCSPKR_MODULE) |
160bd18e MP |
1229 | #include <linux/platform_device.h> |
1230 | static __init int add_pcspkr(void) | |
1231 | { | |
1232 | struct platform_device *pd; | |
1233 | int ret; | |
1234 | ||
1235 | pd = platform_device_alloc("pcspkr", -1); | |
1236 | if (!pd) | |
1237 | return -ENOMEM; | |
1238 | ||
1239 | ret = platform_device_add(pd); | |
1240 | if (ret) | |
1241 | platform_device_put(pd); | |
1242 | ||
1243 | return ret; | |
1244 | } | |
1245 | device_initcall(add_pcspkr); | |
1246 | #endif |