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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (C) 1995 Linus Torvalds |
3 | * | |
4 | * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999 | |
5 | * | |
6 | * Memory region support | |
7 | * David Parsons <orc@pell.chi.il.us>, July-August 1999 | |
8 | * | |
9 | * Added E820 sanitization routine (removes overlapping memory regions); | |
10 | * Brian Moyle <bmoyle@mvista.com>, February 2001 | |
11 | * | |
12 | * Moved CPU detection code to cpu/${cpu}.c | |
13 | * Patrick Mochel <mochel@osdl.org>, March 2002 | |
14 | * | |
15 | * Provisions for empty E820 memory regions (reported by certain BIOSes). | |
16 | * Alex Achenbach <xela@slit.de>, December 2002. | |
17 | * | |
18 | */ | |
19 | ||
20 | /* | |
21 | * This file handles the architecture-dependent parts of initialization | |
22 | */ | |
23 | ||
24 | #include <linux/sched.h> | |
25 | #include <linux/mm.h> | |
05b79bdc | 26 | #include <linux/mmzone.h> |
894673ee | 27 | #include <linux/screen_info.h> |
1da177e4 LT |
28 | #include <linux/ioport.h> |
29 | #include <linux/acpi.h> | |
efafc8b2 | 30 | #include <linux/sfi.h> |
1da177e4 LT |
31 | #include <linux/apm_bios.h> |
32 | #include <linux/initrd.h> | |
33 | #include <linux/bootmem.h> | |
34 | #include <linux/seq_file.h> | |
35 | #include <linux/console.h> | |
36 | #include <linux/mca.h> | |
37 | #include <linux/root_dev.h> | |
38 | #include <linux/highmem.h> | |
39 | #include <linux/module.h> | |
40 | #include <linux/efi.h> | |
41 | #include <linux/init.h> | |
42 | #include <linux/edd.h> | |
138fe4e0 | 43 | #include <linux/iscsi_ibft.h> |
1da177e4 | 44 | #include <linux/nodemask.h> |
1bc3b91a | 45 | #include <linux/kexec.h> |
e9928674 | 46 | #include <linux/dmi.h> |
22a9835c | 47 | #include <linux/pfn.h> |
376ff035 | 48 | #include <linux/pci.h> |
46d671b5 | 49 | #include <asm/pci-direct.h> |
f212ec4b | 50 | #include <linux/init_ohci1394_dma.h> |
790c73f6 | 51 | #include <linux/kvm_para.h> |
1bc3b91a | 52 | |
46d671b5 YL |
53 | #include <linux/errno.h> |
54 | #include <linux/kernel.h> | |
55 | #include <linux/stddef.h> | |
56 | #include <linux/unistd.h> | |
57 | #include <linux/ptrace.h> | |
58 | #include <linux/slab.h> | |
59 | #include <linux/user.h> | |
60 | #include <linux/delay.h> | |
46d671b5 YL |
61 | |
62 | #include <linux/kallsyms.h> | |
46d671b5 YL |
63 | #include <linux/cpufreq.h> |
64 | #include <linux/dma-mapping.h> | |
65 | #include <linux/ctype.h> | |
66 | #include <linux/uaccess.h> | |
67 | ||
68 | #include <linux/percpu.h> | |
69 | #include <linux/crash_dump.h> | |
69575d38 | 70 | #include <linux/tboot.h> |
46d671b5 | 71 | |
1da177e4 | 72 | #include <video/edid.h> |
1bc3b91a | 73 | |
093af8d7 | 74 | #include <asm/mtrr.h> |
9635b47d | 75 | #include <asm/apic.h> |
893f38d1 | 76 | #include <asm/trampoline.h> |
1da177e4 LT |
77 | #include <asm/e820.h> |
78 | #include <asm/mpspec.h> | |
79 | #include <asm/setup.h> | |
55f26239 | 80 | #include <asm/efi.h> |
8e6dafd6 IM |
81 | #include <asm/timer.h> |
82 | #include <asm/i8259.h> | |
1da177e4 | 83 | #include <asm/sections.h> |
1c6e5503 | 84 | #include <asm/dmi.h> |
1da177e4 LT |
85 | #include <asm/io_apic.h> |
86 | #include <asm/ist.h> | |
7ce0bcfd | 87 | #include <asm/vmi.h> |
1164dd00 | 88 | #include <asm/setup_arch.h> |
ce3fe6b2 | 89 | #include <asm/bios_ebda.h> |
00bf4098 | 90 | #include <asm/cacheflush.h> |
2fde61fd | 91 | #include <asm/processor.h> |
cc9f7a0c | 92 | #include <asm/bugs.h> |
1da177e4 | 93 | |
46d671b5 YL |
94 | #include <asm/system.h> |
95 | #include <asm/vsyscall.h> | |
6e5385d4 | 96 | #include <asm/cpu.h> |
46d671b5 YL |
97 | #include <asm/desc.h> |
98 | #include <asm/dma.h> | |
46a7fa27 | 99 | #include <asm/iommu.h> |
1d9b16d1 | 100 | #include <asm/gart.h> |
46d671b5 YL |
101 | #include <asm/mmu_context.h> |
102 | #include <asm/proto.h> | |
103 | ||
46d671b5 | 104 | #include <asm/paravirt.h> |
88b094fb | 105 | #include <asm/hypervisor.h> |
46d671b5 YL |
106 | |
107 | #include <asm/percpu.h> | |
46d671b5 YL |
108 | #include <asm/topology.h> |
109 | #include <asm/apicdef.h> | |
8ee2debc | 110 | #include <asm/k8.h> |
55f26239 YL |
111 | #ifdef CONFIG_X86_64 |
112 | #include <asm/numa_64.h> | |
113 | #endif | |
a2202aa2 | 114 | #include <asm/mce.h> |
46d671b5 | 115 | |
2b72394e PE |
116 | /* |
117 | * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries. | |
118 | * The direct mapping extends to max_pfn_mapped, so that we can directly access | |
119 | * apertures, ACPI and other tables without having to play with fixmaps. | |
120 | */ | |
121 | unsigned long max_low_pfn_mapped; | |
122 | unsigned long max_pfn_mapped; | |
123 | ||
796216a5 JF |
124 | RESERVE_BRK(dmi_alloc, 65536); |
125 | ||
c0b5842a IM |
126 | unsigned int boot_cpu_id __read_mostly; |
127 | ||
93dbda7c JF |
128 | static __initdata unsigned long _brk_start = (unsigned long)__brk_base; |
129 | unsigned long _brk_end = (unsigned long)__brk_base; | |
130 | ||
c0b5842a IM |
131 | #ifdef CONFIG_X86_64 |
132 | int default_cpu_present_to_apicid(int mps_cpu) | |
133 | { | |
134 | return __default_cpu_present_to_apicid(mps_cpu); | |
135 | } | |
136 | ||
e11dadab | 137 | int default_check_phys_apicid_present(int phys_apicid) |
c0b5842a | 138 | { |
e11dadab | 139 | return __default_check_phys_apicid_present(phys_apicid); |
c0b5842a IM |
140 | } |
141 | #endif | |
142 | ||
217b8ce8 YL |
143 | #ifndef CONFIG_DEBUG_BOOT_PARAMS |
144 | struct boot_params __initdata boot_params; | |
145 | #else | |
146 | struct boot_params boot_params; | |
147 | #endif | |
148 | ||
1da177e4 LT |
149 | /* |
150 | * Machine setup.. | |
151 | */ | |
c9cce83d BW |
152 | static struct resource data_resource = { |
153 | .name = "Kernel data", | |
154 | .start = 0, | |
155 | .end = 0, | |
156 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
157 | }; | |
158 | ||
159 | static struct resource code_resource = { | |
160 | .name = "Kernel code", | |
161 | .start = 0, | |
162 | .end = 0, | |
163 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
164 | }; | |
165 | ||
166 | static struct resource bss_resource = { | |
167 | .name = "Kernel bss", | |
168 | .start = 0, | |
169 | .end = 0, | |
170 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
171 | }; | |
172 | ||
7dea23ec YL |
173 | |
174 | #ifdef CONFIG_X86_32 | |
1da177e4 | 175 | /* cpu data as detected by the assembly code in head.S */ |
7dea23ec | 176 | struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
1da177e4 | 177 | /* common cpu data for all cpus */ |
7dea23ec | 178 | struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
129f6946 | 179 | EXPORT_SYMBOL(boot_cpu_data); |
7dea23ec YL |
180 | static void set_mca_bus(int x) |
181 | { | |
182 | #ifdef CONFIG_MCA | |
183 | MCA_bus = x; | |
184 | #endif | |
185 | } | |
1da177e4 | 186 | |
0c254e38 AS |
187 | unsigned int def_to_bigsmp; |
188 | ||
1da177e4 LT |
189 | /* for MCA, but anyone else can use it if they want */ |
190 | unsigned int machine_id; | |
191 | unsigned int machine_submodel_id; | |
192 | unsigned int BIOS_revision; | |
1da177e4 | 193 | |
7dea23ec YL |
194 | struct apm_info apm_info; |
195 | EXPORT_SYMBOL(apm_info); | |
196 | ||
197 | #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ | |
198 | defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) | |
199 | struct ist_info ist_info; | |
200 | EXPORT_SYMBOL(ist_info); | |
201 | #else | |
202 | struct ist_info ist_info; | |
203 | #endif | |
204 | ||
205 | #else | |
ed26dbe5 JF |
206 | struct cpuinfo_x86 boot_cpu_data __read_mostly = { |
207 | .x86_phys_bits = MAX_PHYSMEM_BITS, | |
208 | }; | |
7dea23ec YL |
209 | EXPORT_SYMBOL(boot_cpu_data); |
210 | #endif | |
211 | ||
212 | ||
213 | #if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) | |
214 | unsigned long mmu_cr4_features; | |
215 | #else | |
216 | unsigned long mmu_cr4_features = X86_CR4_PAE; | |
217 | #endif | |
218 | ||
5031296c PA |
219 | /* Boot loader ID and version as integers, for the benefit of proc_dointvec */ |
220 | int bootloader_type, bootloader_version; | |
1da177e4 | 221 | |
1da177e4 LT |
222 | /* |
223 | * Setup options | |
224 | */ | |
1da177e4 | 225 | struct screen_info screen_info; |
129f6946 | 226 | EXPORT_SYMBOL(screen_info); |
1da177e4 | 227 | struct edid_info edid_info; |
5e518d76 | 228 | EXPORT_SYMBOL_GPL(edid_info); |
1da177e4 | 229 | |
1da177e4 LT |
230 | extern int root_mountflags; |
231 | ||
e44b7b75 | 232 | unsigned long saved_video_mode; |
1da177e4 | 233 | |
cf8fa920 | 234 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 235 | #define RAMDISK_PROMPT_FLAG 0x8000 |
cf8fa920 | 236 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 237 | |
4e498b66 | 238 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
516cbf37 TB |
239 | #ifdef CONFIG_CMDLINE_BOOL |
240 | static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE; | |
241 | #endif | |
1da177e4 | 242 | |
1da177e4 LT |
243 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
244 | struct edd edd; | |
245 | #ifdef CONFIG_EDD_MODULE | |
246 | EXPORT_SYMBOL(edd); | |
247 | #endif | |
248 | /** | |
249 | * copy_edd() - Copy the BIOS EDD information | |
250 | * from boot_params into a safe place. | |
251 | * | |
252 | */ | |
9eaa192d | 253 | static inline void __init copy_edd(void) |
1da177e4 | 254 | { |
30c82645 PA |
255 | memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer, |
256 | sizeof(edd.mbr_signature)); | |
257 | memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info)); | |
258 | edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries; | |
259 | edd.edd_info_nr = boot_params.eddbuf_entries; | |
1da177e4 LT |
260 | } |
261 | #else | |
9eaa192d | 262 | static inline void __init copy_edd(void) |
1da177e4 LT |
263 | { |
264 | } | |
265 | #endif | |
266 | ||
5368a2be PA |
267 | void * __init extend_brk(size_t size, size_t align) |
268 | { | |
269 | size_t mask = align - 1; | |
270 | void *ret; | |
271 | ||
272 | BUG_ON(_brk_start == 0); | |
273 | BUG_ON(align & mask); | |
274 | ||
275 | _brk_end = (_brk_end + mask) & ~mask; | |
276 | BUG_ON((char *)(_brk_end + size) > __brk_limit); | |
277 | ||
278 | ret = (void *)_brk_end; | |
279 | _brk_end += size; | |
280 | ||
281 | memset(ret, 0, size); | |
282 | ||
283 | return ret; | |
284 | } | |
285 | ||
854c879f PE |
286 | #ifdef CONFIG_X86_64 |
287 | static void __init init_gbpages(void) | |
288 | { | |
289 | if (direct_gbpages && cpu_has_gbpages) | |
290 | printk(KERN_INFO "Using GB pages for direct mapping\n"); | |
291 | else | |
292 | direct_gbpages = 0; | |
293 | } | |
294 | #else | |
295 | static inline void init_gbpages(void) | |
296 | { | |
297 | } | |
298 | #endif | |
299 | ||
5368a2be PA |
300 | static void __init reserve_brk(void) |
301 | { | |
302 | if (_brk_end > _brk_start) | |
303 | reserve_early(__pa(_brk_start), __pa(_brk_end), "BRK"); | |
304 | ||
305 | /* Mark brk area as locked down and no longer taking any | |
306 | new allocations */ | |
307 | _brk_start = 0; | |
308 | } | |
309 | ||
cf8fa920 PA |
310 | #ifdef CONFIG_BLK_DEV_INITRD |
311 | ||
eb1379cb YL |
312 | #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) |
313 | static void __init relocate_initrd(void) | |
cf8fa920 | 314 | { |
eb1379cb | 315 | |
ba5b14cc YL |
316 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
317 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
8c5dd8f4 | 318 | u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; |
ba5b14cc | 319 | u64 ramdisk_here; |
eb1379cb YL |
320 | unsigned long slop, clen, mapaddr; |
321 | char *p, *q; | |
cf8fa920 PA |
322 | |
323 | /* We need to move the initrd down into lowmem */ | |
4e29684c YL |
324 | ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size, |
325 | PAGE_SIZE); | |
cf8fa920 | 326 | |
3945e2c9 YL |
327 | if (ramdisk_here == -1ULL) |
328 | panic("Cannot find place for new RAMDISK of size %lld\n", | |
329 | ramdisk_size); | |
330 | ||
cf8fa920 PA |
331 | /* Note: this includes all the lowmem currently occupied by |
332 | the initrd, we rely on that fact to keep the data intact. */ | |
3945e2c9 | 333 | reserve_early(ramdisk_here, ramdisk_here + ramdisk_size, |
ba5b14cc | 334 | "NEW RAMDISK"); |
cf8fa920 PA |
335 | initrd_start = ramdisk_here + PAGE_OFFSET; |
336 | initrd_end = initrd_start + ramdisk_size; | |
f0d43100 YL |
337 | printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n", |
338 | ramdisk_here, ramdisk_here + ramdisk_size); | |
cf8fa920 | 339 | |
cf8fa920 PA |
340 | q = (char *)initrd_start; |
341 | ||
342 | /* Copy any lowmem portion of the initrd */ | |
343 | if (ramdisk_image < end_of_lowmem) { | |
344 | clen = end_of_lowmem - ramdisk_image; | |
345 | p = (char *)__va(ramdisk_image); | |
346 | memcpy(q, p, clen); | |
347 | q += clen; | |
348 | ramdisk_image += clen; | |
349 | ramdisk_size -= clen; | |
350 | } | |
351 | ||
352 | /* Copy the highmem portion of the initrd */ | |
353 | while (ramdisk_size) { | |
354 | slop = ramdisk_image & ~PAGE_MASK; | |
355 | clen = ramdisk_size; | |
356 | if (clen > MAX_MAP_CHUNK-slop) | |
357 | clen = MAX_MAP_CHUNK-slop; | |
358 | mapaddr = ramdisk_image & PAGE_MASK; | |
88b4c146 | 359 | p = early_memremap(mapaddr, clen+slop); |
cf8fa920 | 360 | memcpy(q, p+slop, clen); |
beacfaac | 361 | early_iounmap(p, clen+slop); |
cf8fa920 PA |
362 | q += clen; |
363 | ramdisk_image += clen; | |
364 | ramdisk_size -= clen; | |
365 | } | |
a4c81cf6 | 366 | /* high pages is not converted by early_res_to_bootmem */ |
ba5b14cc YL |
367 | ramdisk_image = boot_params.hdr.ramdisk_image; |
368 | ramdisk_size = boot_params.hdr.ramdisk_size; | |
eb1379cb YL |
369 | printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to" |
370 | " %08llx - %08llx\n", | |
ba5b14cc YL |
371 | ramdisk_image, ramdisk_image + ramdisk_size - 1, |
372 | ramdisk_here, ramdisk_here + ramdisk_size - 1); | |
eb1379cb | 373 | } |
9a27f5c5 | 374 | |
eb1379cb YL |
375 | static void __init reserve_initrd(void) |
376 | { | |
377 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; | |
378 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
379 | u64 ramdisk_end = ramdisk_image + ramdisk_size; | |
8c5dd8f4 | 380 | u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; |
eb1379cb YL |
381 | |
382 | if (!boot_params.hdr.type_of_loader || | |
383 | !ramdisk_image || !ramdisk_size) | |
384 | return; /* No initrd provided by bootloader */ | |
385 | ||
386 | initrd_start = 0; | |
387 | ||
388 | if (ramdisk_size >= (end_of_lowmem>>1)) { | |
389 | free_early(ramdisk_image, ramdisk_end); | |
390 | printk(KERN_ERR "initrd too large to handle, " | |
391 | "disabling initrd\n"); | |
392 | return; | |
393 | } | |
394 | ||
395 | printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image, | |
396 | ramdisk_end); | |
397 | ||
398 | ||
399 | if (ramdisk_end <= end_of_lowmem) { | |
400 | /* All in lowmem, easy case */ | |
401 | /* | |
402 | * don't need to reserve again, already reserved early | |
403 | * in i386_start_kernel | |
404 | */ | |
405 | initrd_start = ramdisk_image + PAGE_OFFSET; | |
406 | initrd_end = initrd_start + ramdisk_size; | |
407 | return; | |
408 | } | |
409 | ||
eb1379cb | 410 | relocate_initrd(); |
8c5dd8f4 | 411 | |
eb1379cb | 412 | free_early(ramdisk_image, ramdisk_end); |
cf8fa920 | 413 | } |
225c37d7 | 414 | #else |
eb1379cb | 415 | static void __init reserve_initrd(void) |
225c37d7 YL |
416 | { |
417 | } | |
cf8fa920 PA |
418 | #endif /* CONFIG_BLK_DEV_INITRD */ |
419 | ||
29f784e3 | 420 | static void __init parse_setup_data(void) |
257b0fde YL |
421 | { |
422 | struct setup_data *data; | |
423 | u64 pa_data; | |
424 | ||
425 | if (boot_params.hdr.version < 0x0209) | |
426 | return; | |
427 | pa_data = boot_params.hdr.setup_data; | |
428 | while (pa_data) { | |
88b4c146 | 429 | data = early_memremap(pa_data, PAGE_SIZE); |
257b0fde YL |
430 | switch (data->type) { |
431 | case SETUP_E820_EXT: | |
432 | parse_e820_ext(data, pa_data); | |
433 | break; | |
434 | default: | |
435 | break; | |
436 | } | |
257b0fde YL |
437 | pa_data = data->next; |
438 | early_iounmap(data, PAGE_SIZE); | |
439 | } | |
440 | } | |
441 | ||
a0a0becd | 442 | static void __init e820_reserve_setup_data(void) |
28bb2237 YL |
443 | { |
444 | struct setup_data *data; | |
445 | u64 pa_data; | |
d9a81b44 | 446 | int found = 0; |
28bb2237 YL |
447 | |
448 | if (boot_params.hdr.version < 0x0209) | |
449 | return; | |
450 | pa_data = boot_params.hdr.setup_data; | |
451 | while (pa_data) { | |
88b4c146 | 452 | data = early_memremap(pa_data, sizeof(*data)); |
28bb2237 YL |
453 | e820_update_range(pa_data, sizeof(*data)+data->len, |
454 | E820_RAM, E820_RESERVED_KERN); | |
d9a81b44 | 455 | found = 1; |
28bb2237 YL |
456 | pa_data = data->next; |
457 | early_iounmap(data, sizeof(*data)); | |
458 | } | |
d9a81b44 YL |
459 | if (!found) |
460 | return; | |
461 | ||
28bb2237 | 462 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); |
a0a0becd | 463 | memcpy(&e820_saved, &e820, sizeof(struct e820map)); |
28bb2237 YL |
464 | printk(KERN_INFO "extended physical RAM map:\n"); |
465 | e820_print_map("reserve setup_data"); | |
466 | } | |
467 | ||
a0a0becd YL |
468 | static void __init reserve_early_setup_data(void) |
469 | { | |
470 | struct setup_data *data; | |
471 | u64 pa_data; | |
472 | char buf[32]; | |
473 | ||
474 | if (boot_params.hdr.version < 0x0209) | |
475 | return; | |
476 | pa_data = boot_params.hdr.setup_data; | |
477 | while (pa_data) { | |
88b4c146 | 478 | data = early_memremap(pa_data, sizeof(*data)); |
a0a0becd YL |
479 | sprintf(buf, "setup data %x", data->type); |
480 | reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf); | |
481 | pa_data = data->next; | |
482 | early_iounmap(data, sizeof(*data)); | |
483 | } | |
484 | } | |
485 | ||
ccb4defa YL |
486 | /* |
487 | * --------- Crashkernel reservation ------------------------------ | |
488 | */ | |
489 | ||
490 | #ifdef CONFIG_KEXEC | |
32105f7f | 491 | |
ccb4defa YL |
492 | static inline unsigned long long get_total_mem(void) |
493 | { | |
494 | unsigned long long total; | |
495 | ||
44280733 | 496 | total = max_pfn - min_low_pfn; |
ccb4defa YL |
497 | |
498 | return total << PAGE_SHIFT; | |
499 | } | |
500 | ||
29f784e3 | 501 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
502 | { |
503 | unsigned long long total_mem; | |
504 | unsigned long long crash_size, crash_base; | |
505 | int ret; | |
506 | ||
507 | total_mem = get_total_mem(); | |
508 | ||
509 | ret = parse_crashkernel(boot_command_line, total_mem, | |
510 | &crash_size, &crash_base); | |
32105f7f BW |
511 | if (ret != 0 || crash_size <= 0) |
512 | return; | |
513 | ||
514 | /* 0 means: find the address automatically */ | |
515 | if (crash_base <= 0) { | |
44280733 YL |
516 | const unsigned long long alignment = 16<<20; /* 16M */ |
517 | ||
518 | crash_base = find_e820_area(alignment, ULONG_MAX, crash_size, | |
519 | alignment); | |
32105f7f | 520 | if (crash_base == -1ULL) { |
44280733 | 521 | pr_info("crashkernel reservation failed - No suitable area found.\n"); |
ccb4defa YL |
522 | return; |
523 | } | |
32105f7f | 524 | } else { |
44280733 YL |
525 | unsigned long long start; |
526 | ||
527 | start = find_e820_area(crash_base, ULONG_MAX, crash_size, | |
528 | 1<<20); | |
529 | if (start != crash_base) { | |
530 | pr_info("crashkernel reservation failed - memory is in use.\n"); | |
ccb4defa YL |
531 | return; |
532 | } | |
32105f7f | 533 | } |
44280733 | 534 | reserve_early(crash_base, crash_base + crash_size, "CRASH KERNEL"); |
ccb4defa | 535 | |
32105f7f BW |
536 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " |
537 | "for crashkernel (System RAM: %ldMB)\n", | |
538 | (unsigned long)(crash_size >> 20), | |
539 | (unsigned long)(crash_base >> 20), | |
540 | (unsigned long)(total_mem >> 20)); | |
ccb4defa | 541 | |
32105f7f BW |
542 | crashk_res.start = crash_base; |
543 | crashk_res.end = crash_base + crash_size - 1; | |
544 | insert_resource(&iomem_resource, &crashk_res); | |
ccb4defa YL |
545 | } |
546 | #else | |
29f784e3 | 547 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
548 | { |
549 | } | |
550 | #endif | |
551 | ||
bdba0e70 YL |
552 | static struct resource standard_io_resources[] = { |
553 | { .name = "dma1", .start = 0x00, .end = 0x1f, | |
554 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
555 | { .name = "pic1", .start = 0x20, .end = 0x21, | |
556 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
557 | { .name = "timer0", .start = 0x40, .end = 0x43, | |
558 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
559 | { .name = "timer1", .start = 0x50, .end = 0x53, | |
560 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
561 | { .name = "keyboard", .start = 0x60, .end = 0x60, | |
562 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
563 | { .name = "keyboard", .start = 0x64, .end = 0x64, | |
564 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
565 | { .name = "dma page reg", .start = 0x80, .end = 0x8f, | |
566 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
567 | { .name = "pic2", .start = 0xa0, .end = 0xa1, | |
568 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
569 | { .name = "dma2", .start = 0xc0, .end = 0xdf, | |
570 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
571 | { .name = "fpu", .start = 0xf0, .end = 0xff, | |
572 | .flags = IORESOURCE_BUSY | IORESOURCE_IO } | |
573 | }; | |
574 | ||
8fee697d | 575 | void __init reserve_standard_io_resources(void) |
bdba0e70 YL |
576 | { |
577 | int i; | |
578 | ||
579 | /* request I/O space for devices used on all i[345]86 PCs */ | |
580 | for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) | |
581 | request_resource(&ioport_resource, &standard_io_resources[i]); | |
582 | ||
583 | } | |
584 | ||
57cac4d1 VG |
585 | /* |
586 | * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by | |
587 | * is_kdump_kernel() to determine if we are booting after a panic. Hence | |
588 | * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. | |
589 | */ | |
590 | ||
591 | #ifdef CONFIG_CRASH_DUMP | |
0196bcbb YL |
592 | /* elfcorehdr= specifies the location of elf core header |
593 | * stored by the crashed kernel. This option will be passed | |
594 | * by kexec loader to the capture kernel. | |
595 | */ | |
596 | static int __init setup_elfcorehdr(char *arg) | |
597 | { | |
598 | char *end; | |
599 | if (!arg) | |
600 | return -EINVAL; | |
601 | elfcorehdr_addr = memparse(arg, &end); | |
602 | return end > arg ? 0 : -EINVAL; | |
603 | } | |
604 | early_param("elfcorehdr", setup_elfcorehdr); | |
605 | #endif | |
606 | ||
bb557460 | 607 | #ifdef CONFIG_X86_RESERVE_LOW_64K |
5649b7c3 IM |
608 | static int __init dmi_low_memory_corruption(const struct dmi_system_id *d) |
609 | { | |
610 | printk(KERN_NOTICE | |
45608399 | 611 | "%s detected: BIOS may corrupt low RAM, working around it.\n", |
5649b7c3 IM |
612 | d->ident); |
613 | ||
2216d199 YL |
614 | e820_update_range(0, 0x10000, E820_RAM, E820_RESERVED); |
615 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
5649b7c3 IM |
616 | |
617 | return 0; | |
618 | } | |
bb557460 | 619 | #endif |
5649b7c3 IM |
620 | |
621 | /* List of systems that have known low memory corruption BIOS problems */ | |
622 | static struct dmi_system_id __initdata bad_bios_dmi_table[] = { | |
fc381519 | 623 | #ifdef CONFIG_X86_RESERVE_LOW_64K |
5649b7c3 IM |
624 | { |
625 | .callback = dmi_low_memory_corruption, | |
626 | .ident = "AMI BIOS", | |
627 | .matches = { | |
628 | DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."), | |
629 | }, | |
630 | }, | |
1e22436e IM |
631 | { |
632 | .callback = dmi_low_memory_corruption, | |
633 | .ident = "Phoenix BIOS", | |
634 | .matches = { | |
0af40a4b | 635 | DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies"), |
1e22436e IM |
636 | }, |
637 | }, | |
6aa542a6 | 638 | { |
f1b291d4 SK |
639 | .callback = dmi_low_memory_corruption, |
640 | .ident = "Phoenix/MSC BIOS", | |
641 | .matches = { | |
642 | DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix/MSC"), | |
643 | }, | |
644 | }, | |
6aa542a6 | 645 | /* |
7c099ce1 DH |
646 | * AMI BIOS with low memory corruption was found on Intel DG45ID and |
647 | * DG45FC boards. | |
648 | * It has a different DMI_BIOS_VENDOR = "Intel Corp.", for now we will | |
6aa542a6 AF |
649 | * match only DMI_BOARD_NAME and see if there is more bad products |
650 | * with this vendor. | |
651 | */ | |
7c099ce1 | 652 | { |
6aa542a6 AF |
653 | .callback = dmi_low_memory_corruption, |
654 | .ident = "AMI BIOS", | |
655 | .matches = { | |
656 | DMI_MATCH(DMI_BOARD_NAME, "DG45ID"), | |
657 | }, | |
658 | }, | |
7c099ce1 DH |
659 | { |
660 | .callback = dmi_low_memory_corruption, | |
661 | .ident = "AMI BIOS", | |
662 | .matches = { | |
663 | DMI_MATCH(DMI_BOARD_NAME, "DG45FC"), | |
664 | }, | |
665 | }, | |
fc381519 | 666 | #endif |
a8b71a28 | 667 | {} |
5649b7c3 IM |
668 | }; |
669 | ||
1b5576e6 YL |
670 | static void __init trim_bios_range(void) |
671 | { | |
672 | /* | |
673 | * A special case is the first 4Kb of memory; | |
674 | * This is a BIOS owned area, not kernel ram, but generally | |
675 | * not listed as such in the E820 table. | |
676 | */ | |
677 | e820_update_range(0, PAGE_SIZE, E820_RAM, E820_RESERVED); | |
678 | /* | |
679 | * special case: Some BIOSen report the PC BIOS | |
680 | * area (640->1Mb) as ram even though it is not. | |
681 | * take them out. | |
682 | */ | |
683 | e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1); | |
684 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
685 | } | |
686 | ||
1da177e4 LT |
687 | /* |
688 | * Determine if we were loaded by an EFI loader. If so, then we have also been | |
689 | * passed the efi memmap, systab, etc., so we should use these data structures | |
690 | * for initialization. Note, the efi init code path is determined by the | |
691 | * global efi_enabled. This allows the same kernel image to be used on existing | |
692 | * systems (with a traditional BIOS) as well as on EFI systems. | |
693 | */ | |
76934ed4 YL |
694 | /* |
695 | * setup_arch - architecture-specific boot-time initializations | |
696 | * | |
697 | * Note: On x86_64, fixmaps are ready for use even before this is called. | |
698 | */ | |
699 | ||
1da177e4 LT |
700 | void __init setup_arch(char **cmdline_p) |
701 | { | |
8ee2debc DR |
702 | int acpi = 0; |
703 | int k8 = 0; | |
704 | ||
76934ed4 | 705 | #ifdef CONFIG_X86_32 |
1da177e4 | 706 | memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); |
3b33553b | 707 | visws_early_detect(); |
76934ed4 YL |
708 | #else |
709 | printk(KERN_INFO "Command line: %s\n", boot_command_line); | |
710 | #endif | |
1da177e4 | 711 | |
ae8d04e2 ZA |
712 | /* VMI may relocate the fixmap; do this before touching ioremap area */ |
713 | vmi_init(); | |
714 | ||
9e882c92 | 715 | early_cpu_init(); |
1a98fd14 JF |
716 | early_ioremap_init(); |
717 | ||
30c82645 PA |
718 | ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); |
719 | screen_info = boot_params.screen_info; | |
720 | edid_info = boot_params.edid_info; | |
76934ed4 | 721 | #ifdef CONFIG_X86_32 |
30c82645 PA |
722 | apm_info.bios = boot_params.apm_bios_info; |
723 | ist_info = boot_params.ist_info; | |
76934ed4 | 724 | if (boot_params.sys_desc_table.length != 0) { |
30c82645 PA |
725 | set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2); |
726 | machine_id = boot_params.sys_desc_table.table[0]; | |
727 | machine_submodel_id = boot_params.sys_desc_table.table[1]; | |
728 | BIOS_revision = boot_params.sys_desc_table.table[2]; | |
1da177e4 | 729 | } |
76934ed4 YL |
730 | #endif |
731 | saved_video_mode = boot_params.hdr.vid_mode; | |
30c82645 | 732 | bootloader_type = boot_params.hdr.type_of_loader; |
5031296c PA |
733 | if ((bootloader_type >> 4) == 0xe) { |
734 | bootloader_type &= 0xf; | |
735 | bootloader_type |= (boot_params.hdr.ext_loader_type+0x10) << 4; | |
736 | } | |
737 | bootloader_version = bootloader_type & 0xf; | |
738 | bootloader_version |= boot_params.hdr.ext_loader_ver << 4; | |
1da177e4 LT |
739 | |
740 | #ifdef CONFIG_BLK_DEV_RAM | |
30c82645 PA |
741 | rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK; |
742 | rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); | |
743 | rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); | |
1da177e4 | 744 | #endif |
7465252e YL |
745 | #ifdef CONFIG_EFI |
746 | if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, | |
76934ed4 YL |
747 | #ifdef CONFIG_X86_32 |
748 | "EL32", | |
749 | #else | |
750 | "EL64", | |
751 | #endif | |
752 | 4)) { | |
7465252e YL |
753 | efi_enabled = 1; |
754 | efi_reserve_early(); | |
755 | } | |
756 | #endif | |
757 | ||
42bbdb43 | 758 | x86_init.oem.arch_setup(); |
2215e69d | 759 | |
0dbfafa5 | 760 | setup_memory_map(); |
28bb2237 | 761 | parse_setup_data(); |
a0a0becd YL |
762 | /* update the e820_saved too */ |
763 | e820_reserve_setup_data(); | |
28bb2237 | 764 | |
1da177e4 LT |
765 | copy_edd(); |
766 | ||
30c82645 | 767 | if (!boot_params.hdr.root_flags) |
1da177e4 LT |
768 | root_mountflags &= ~MS_RDONLY; |
769 | init_mm.start_code = (unsigned long) _text; | |
770 | init_mm.end_code = (unsigned long) _etext; | |
771 | init_mm.end_data = (unsigned long) _edata; | |
93dbda7c | 772 | init_mm.brk = _brk_end; |
1da177e4 LT |
773 | |
774 | code_resource.start = virt_to_phys(_text); | |
775 | code_resource.end = virt_to_phys(_etext)-1; | |
776 | data_resource.start = virt_to_phys(_etext); | |
777 | data_resource.end = virt_to_phys(_edata)-1; | |
00bf4098 BW |
778 | bss_resource.start = virt_to_phys(&__bss_start); |
779 | bss_resource.end = virt_to_phys(&__bss_stop)-1; | |
1da177e4 | 780 | |
516cbf37 TB |
781 | #ifdef CONFIG_CMDLINE_BOOL |
782 | #ifdef CONFIG_CMDLINE_OVERRIDE | |
783 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
784 | #else | |
785 | if (builtin_cmdline[0]) { | |
786 | /* append boot loader cmdline to builtin */ | |
787 | strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE); | |
788 | strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE); | |
789 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
790 | } | |
791 | #endif | |
792 | #endif | |
793 | ||
eda6da92 YL |
794 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
795 | *cmdline_p = command_line; | |
796 | ||
eda6da92 | 797 | /* |
4b0f3b81 KC |
798 | * x86_configure_nx() is called before parse_early_param() to detect |
799 | * whether hardware doesn't support NX (so that the early EHCI debug | |
800 | * console setup can safely call set_fixmap()). It may then be called | |
801 | * again from within noexec_setup() during parsing early parameters | |
802 | * to honor the respective command line option. | |
eda6da92 | 803 | */ |
4763ed4d | 804 | x86_configure_nx(); |
eda6da92 YL |
805 | |
806 | parse_early_param(); | |
807 | ||
4b0f3b81 | 808 | x86_report_nx(); |
0ad5bce7 | 809 | |
ae8d04e2 ZA |
810 | /* Must be before kernel pagetables are setup */ |
811 | vmi_activate(); | |
3a6ddd5f | 812 | |
28bb2237 | 813 | /* after early param, so could get panic from serial */ |
a0a0becd | 814 | reserve_early_setup_data(); |
28bb2237 | 815 | |
76934ed4 | 816 | if (acpi_mps_check()) { |
3eb11edc | 817 | #ifdef CONFIG_X86_LOCAL_APIC |
76934ed4 | 818 | disable_apic = 1; |
3eb11edc | 819 | #endif |
988781dc | 820 | setup_clear_cpu_cap(X86_FEATURE_APIC); |
3c999f14 YL |
821 | } |
822 | ||
dc7c65db LT |
823 | #ifdef CONFIG_PCI |
824 | if (pci_early_dump_regs) | |
825 | early_dump_pci_devices(); | |
826 | #endif | |
827 | ||
0dbfafa5 | 828 | finish_e820_parsing(); |
1a3f239d | 829 | |
ff0c0874 BM |
830 | if (efi_enabled) |
831 | efi_init(); | |
832 | ||
2216d199 YL |
833 | dmi_scan_machine(); |
834 | ||
835 | dmi_check_system(bad_bios_dmi_table); | |
836 | ||
88b094fb AK |
837 | /* |
838 | * VMware detection requires dmi to be available, so this | |
839 | * needs to be done after dmi_scan_machine, for the BP. | |
840 | */ | |
2d826404 | 841 | init_hypervisor_platform(); |
88b094fb | 842 | |
f7cf5a5b | 843 | x86_init.resources.probe_roms(); |
41c094fd YL |
844 | |
845 | /* after parse_early_param, so could debug it */ | |
846 | insert_resource(&iomem_resource, &code_resource); | |
847 | insert_resource(&iomem_resource, &data_resource); | |
848 | insert_resource(&iomem_resource, &bss_resource); | |
849 | ||
1b5576e6 | 850 | trim_bios_range(); |
76934ed4 | 851 | #ifdef CONFIG_X86_32 |
cc9f7a0c YL |
852 | if (ppro_with_ram_bug()) { |
853 | e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM, | |
854 | E820_RESERVED); | |
855 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
856 | printk(KERN_INFO "fixed physical RAM map:\n"); | |
857 | e820_print_map("bad_ppro"); | |
858 | } | |
76934ed4 YL |
859 | #else |
860 | early_gart_iommu_check(); | |
861 | #endif | |
cc9f7a0c | 862 | |
7b2a0a6c YL |
863 | /* |
864 | * partially used pages are not usable - thus | |
865 | * we are rounding upwards: | |
866 | */ | |
f361a450 | 867 | max_pfn = e820_end_of_ram_pfn(); |
7b2a0a6c | 868 | |
6780711e YL |
869 | /* preallocate 4k for mptable mpc */ |
870 | early_reserve_e820_mpc_new(); | |
093af8d7 YL |
871 | /* update e820 for memory not covered by WB MTRRs */ |
872 | mtrr_bp_init(); | |
2dc807b3 | 873 | if (mtrr_trim_uncached_memory(max_pfn)) |
f361a450 | 874 | max_pfn = e820_end_of_ram_pfn(); |
76c32418 | 875 | |
76934ed4 | 876 | #ifdef CONFIG_X86_32 |
4e29684c | 877 | /* max_low_pfn get updated here */ |
2ec65f8b | 878 | find_low_pfn_range(); |
76934ed4 YL |
879 | #else |
880 | num_physpages = max_pfn; | |
881 | ||
06cd9a7d | 882 | check_x2apic(); |
76934ed4 YL |
883 | |
884 | /* How many end-of-memory variables you have, grandma! */ | |
885 | /* need this before calling reserve_initrd */ | |
f361a450 YL |
886 | if (max_pfn > (1UL<<(32 - PAGE_SHIFT))) |
887 | max_low_pfn = e820_end_of_low_ram_pfn(); | |
888 | else | |
889 | max_low_pfn = max_pfn; | |
890 | ||
76934ed4 | 891 | high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; |
80989ce0 | 892 | max_pfn_mapped = KERNEL_IMAGE_SIZE >> PAGE_SHIFT; |
76934ed4 | 893 | #endif |
2ec65f8b | 894 | |
5394f80f JF |
895 | #ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION |
896 | setup_bios_corruption_check(); | |
897 | #endif | |
898 | ||
80989ce0 YL |
899 | printk(KERN_DEBUG "initial memory mapped : 0 - %08lx\n", |
900 | max_pfn_mapped<<PAGE_SHIFT); | |
901 | ||
93dbda7c JF |
902 | reserve_brk(); |
903 | ||
893f38d1 YL |
904 | /* |
905 | * Find and reserve possible boot-time SMP configuration: | |
906 | */ | |
907 | find_smp_config(); | |
908 | ||
909 | reserve_trampoline_memory(); | |
910 | ||
196cf0d6 YL |
911 | #ifdef CONFIG_ACPI_SLEEP |
912 | /* | |
913 | * Reserve low memory region for sleep support. | |
914 | * even before init_memory_mapping | |
915 | */ | |
916 | acpi_reserve_wakeup_memory(); | |
917 | #endif | |
854c879f PE |
918 | init_gbpages(); |
919 | ||
4e29684c | 920 | /* max_pfn_mapped is updated here */ |
f361a450 YL |
921 | max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); |
922 | max_pfn_mapped = max_low_pfn_mapped; | |
923 | ||
924 | #ifdef CONFIG_X86_64 | |
925 | if (max_pfn > max_low_pfn) { | |
926 | max_pfn_mapped = init_memory_mapping(1UL<<32, | |
927 | max_pfn<<PAGE_SHIFT); | |
928 | /* can we preseve max_low_pfn ?*/ | |
929 | max_low_pfn = max_pfn; | |
930 | } | |
931 | #endif | |
4e29684c | 932 | |
e7b37895 YL |
933 | /* |
934 | * NOTE: On x86-32, only from this point on, fixmaps are ready for use. | |
935 | */ | |
936 | ||
937 | #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT | |
938 | if (init_ohci1394_dma_early) | |
939 | init_ohci1394_dma_on_all_controllers(); | |
940 | #endif | |
941 | ||
2ec65f8b YL |
942 | reserve_initrd(); |
943 | ||
44280733 YL |
944 | reserve_crashkernel(); |
945 | ||
76934ed4 | 946 | vsmp_init(); |
76934ed4 | 947 | |
1c6e5503 YL |
948 | io_delay_init(); |
949 | ||
1c6e5503 YL |
950 | /* |
951 | * Parse the ACPI tables for possible boot-time SMP configuration. | |
952 | */ | |
953 | acpi_boot_table_init(); | |
1c6e5503 | 954 | |
2e42060c JS |
955 | early_acpi_boot_init(); |
956 | ||
1c6e5503 | 957 | #ifdef CONFIG_ACPI_NUMA |
f2f865fe YL |
958 | /* |
959 | * Parse SRAT to discover nodes. | |
960 | */ | |
8716273c | 961 | acpi = acpi_numa_init(); |
1c6e5503 YL |
962 | #endif |
963 | ||
8ee2debc | 964 | #ifdef CONFIG_K8_NUMA |
8716273c DR |
965 | if (!acpi) |
966 | k8 = !k8_numa_init(0, max_pfn); | |
8ee2debc DR |
967 | #endif |
968 | ||
969 | initmem_init(0, max_pfn, acpi, k8); | |
1842f90c | 970 | early_res_to_bootmem(0, max_low_pfn<<PAGE_SHIFT); |
093af8d7 | 971 | |
91467bdf BW |
972 | #ifdef CONFIG_X86_64 |
973 | /* | |
974 | * dma32_reserve_bootmem() allocates bootmem which may conflict | |
975 | * with the crashkernel command line, so do that after | |
976 | * reserve_crashkernel() | |
977 | */ | |
978 | dma32_reserve_bootmem(); | |
979 | #endif | |
980 | ||
593a0cc3 YL |
981 | reserve_ibft_region(); |
982 | ||
790c73f6 GOC |
983 | #ifdef CONFIG_KVM_CLOCK |
984 | kvmclock_init(); | |
985 | #endif | |
986 | ||
030cb6c0 | 987 | x86_init.paging.pagetable_setup_start(swapper_pg_dir); |
1da177e4 | 988 | paging_init(); |
030cb6c0 | 989 | x86_init.paging.pagetable_setup_done(swapper_pg_dir); |
f212ec4b | 990 | |
31625340 JC |
991 | tboot_probe(); |
992 | ||
76934ed4 YL |
993 | #ifdef CONFIG_X86_64 |
994 | map_vsyscall(); | |
995 | #endif | |
996 | ||
1a3f239d | 997 | generic_apic_probe(); |
1da177e4 | 998 | |
54ef3400 | 999 | early_quirks(); |
d44647b0 | 1000 | |
295deae4 YL |
1001 | /* |
1002 | * Read APIC and some other early information from ACPI tables. | |
1003 | */ | |
1da177e4 | 1004 | acpi_boot_init(); |
04606618 | 1005 | |
efafc8b2 | 1006 | sfi_init(); |
04606618 | 1007 | |
295deae4 YL |
1008 | /* |
1009 | * get boot-time SMP configuration: | |
1010 | */ | |
e0da3364 YL |
1011 | if (smp_found_config) |
1012 | get_smp_config(); | |
76934ed4 | 1013 | |
329513a3 | 1014 | prefill_possible_map(); |
301e6190 | 1015 | |
5f4765f9 YL |
1016 | #ifdef CONFIG_X86_64 |
1017 | init_cpu_to_node(); | |
1018 | #endif | |
1019 | ||
76934ed4 YL |
1020 | init_apic_mappings(); |
1021 | ioapic_init_mappings(); | |
f3294a33 | 1022 | |
9d6a4d08 | 1023 | /* need to wait for io_apic is mapped */ |
be5d5350 | 1024 | probe_nr_irqs_gsi(); |
9d6a4d08 | 1025 | |
295deae4 | 1026 | kvm_guest_init(); |
1da177e4 | 1027 | |
41c094fd | 1028 | e820_reserve_resources(); |
bf62f398 | 1029 | e820_mark_nosave_regions(max_low_pfn); |
1da177e4 | 1030 | |
8fee697d | 1031 | x86_init.resources.reserve_resources(); |
41c094fd YL |
1032 | |
1033 | e820_setup_gap(); | |
1034 | ||
1da177e4 LT |
1035 | #ifdef CONFIG_VT |
1036 | #if defined(CONFIG_VGA_CONSOLE) | |
1037 | if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) | |
1038 | conswitchp = &vga_con; | |
1039 | #elif defined(CONFIG_DUMMY_CONSOLE) | |
1040 | conswitchp = &dummy_con; | |
1041 | #endif | |
1042 | #endif | |
6f30c1ac | 1043 | x86_init.oem.banner(); |
a2202aa2 YW |
1044 | |
1045 | mcheck_init(); | |
1da177e4 | 1046 | } |
5649b7c3 | 1047 | |
9be1b56a IM |
1048 | #ifdef CONFIG_X86_32 |
1049 | ||
8fee697d TG |
1050 | static struct resource video_ram_resource = { |
1051 | .name = "Video RAM area", | |
1052 | .start = 0xa0000, | |
1053 | .end = 0xbffff, | |
1054 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
9be1b56a IM |
1055 | }; |
1056 | ||
8fee697d | 1057 | void __init i386_reserve_resources(void) |
9be1b56a | 1058 | { |
8fee697d TG |
1059 | request_resource(&iomem_resource, &video_ram_resource); |
1060 | reserve_standard_io_resources(); | |
9be1b56a IM |
1061 | } |
1062 | ||
9be1b56a | 1063 | #endif /* CONFIG_X86_32 */ |