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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> | |
72d7c3b3 | 34 | #include <linux/memblock.h> |
1da177e4 LT |
35 | #include <linux/seq_file.h> |
36 | #include <linux/console.h> | |
1da177e4 LT |
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> | |
46d671b5 YL |
58 | #include <linux/user.h> |
59 | #include <linux/delay.h> | |
46d671b5 YL |
60 | |
61 | #include <linux/kallsyms.h> | |
46d671b5 YL |
62 | #include <linux/cpufreq.h> |
63 | #include <linux/dma-mapping.h> | |
64 | #include <linux/ctype.h> | |
65 | #include <linux/uaccess.h> | |
66 | ||
67 | #include <linux/percpu.h> | |
68 | #include <linux/crash_dump.h> | |
69575d38 | 69 | #include <linux/tboot.h> |
46d671b5 | 70 | |
1da177e4 | 71 | #include <video/edid.h> |
1bc3b91a | 72 | |
093af8d7 | 73 | #include <asm/mtrr.h> |
9635b47d | 74 | #include <asm/apic.h> |
893f38d1 | 75 | #include <asm/trampoline.h> |
1da177e4 LT |
76 | #include <asm/e820.h> |
77 | #include <asm/mpspec.h> | |
78 | #include <asm/setup.h> | |
55f26239 | 79 | #include <asm/efi.h> |
8e6dafd6 IM |
80 | #include <asm/timer.h> |
81 | #include <asm/i8259.h> | |
1da177e4 | 82 | #include <asm/sections.h> |
1c6e5503 | 83 | #include <asm/dmi.h> |
1da177e4 LT |
84 | #include <asm/io_apic.h> |
85 | #include <asm/ist.h> | |
1164dd00 | 86 | #include <asm/setup_arch.h> |
ce3fe6b2 | 87 | #include <asm/bios_ebda.h> |
00bf4098 | 88 | #include <asm/cacheflush.h> |
2fde61fd | 89 | #include <asm/processor.h> |
cc9f7a0c | 90 | #include <asm/bugs.h> |
1da177e4 | 91 | |
46d671b5 | 92 | #include <asm/vsyscall.h> |
6e5385d4 | 93 | #include <asm/cpu.h> |
46d671b5 YL |
94 | #include <asm/desc.h> |
95 | #include <asm/dma.h> | |
46a7fa27 | 96 | #include <asm/iommu.h> |
1d9b16d1 | 97 | #include <asm/gart.h> |
46d671b5 YL |
98 | #include <asm/mmu_context.h> |
99 | #include <asm/proto.h> | |
100 | ||
46d671b5 | 101 | #include <asm/paravirt.h> |
88b094fb | 102 | #include <asm/hypervisor.h> |
fd699c76 | 103 | #include <asm/olpc_ofw.h> |
46d671b5 YL |
104 | |
105 | #include <asm/percpu.h> | |
46d671b5 YL |
106 | #include <asm/topology.h> |
107 | #include <asm/apicdef.h> | |
23ac4ae8 | 108 | #include <asm/amd_nb.h> |
55f26239 YL |
109 | #ifdef CONFIG_X86_64 |
110 | #include <asm/numa_64.h> | |
111 | #endif | |
a2202aa2 | 112 | #include <asm/mce.h> |
f49aa448 | 113 | #include <asm/alternative.h> |
da6b737b | 114 | #include <asm/prom.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 | ||
e808bae2 | 124 | #ifdef CONFIG_DMI |
796216a5 | 125 | RESERVE_BRK(dmi_alloc, 65536); |
e808bae2 | 126 | #endif |
796216a5 | 127 | |
c0b5842a | 128 | |
93dbda7c JF |
129 | static __initdata unsigned long _brk_start = (unsigned long)__brk_base; |
130 | unsigned long _brk_end = (unsigned long)__brk_base; | |
131 | ||
c0b5842a IM |
132 | #ifdef CONFIG_X86_64 |
133 | int default_cpu_present_to_apicid(int mps_cpu) | |
134 | { | |
135 | return __default_cpu_present_to_apicid(mps_cpu); | |
136 | } | |
137 | ||
e11dadab | 138 | int default_check_phys_apicid_present(int phys_apicid) |
c0b5842a | 139 | { |
e11dadab | 140 | return __default_check_phys_apicid_present(phys_apicid); |
c0b5842a IM |
141 | } |
142 | #endif | |
143 | ||
217b8ce8 YL |
144 | #ifndef CONFIG_DEBUG_BOOT_PARAMS |
145 | struct boot_params __initdata boot_params; | |
146 | #else | |
147 | struct boot_params boot_params; | |
148 | #endif | |
149 | ||
1da177e4 LT |
150 | /* |
151 | * Machine setup.. | |
152 | */ | |
c9cce83d BW |
153 | static struct resource data_resource = { |
154 | .name = "Kernel data", | |
155 | .start = 0, | |
156 | .end = 0, | |
157 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
158 | }; | |
159 | ||
160 | static struct resource code_resource = { | |
161 | .name = "Kernel code", | |
162 | .start = 0, | |
163 | .end = 0, | |
164 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
165 | }; | |
166 | ||
167 | static struct resource bss_resource = { | |
168 | .name = "Kernel bss", | |
169 | .start = 0, | |
170 | .end = 0, | |
171 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
172 | }; | |
173 | ||
7dea23ec YL |
174 | |
175 | #ifdef CONFIG_X86_32 | |
1da177e4 | 176 | /* cpu data as detected by the assembly code in head.S */ |
7dea23ec | 177 | struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
1da177e4 | 178 | /* common cpu data for all cpus */ |
7dea23ec | 179 | struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
129f6946 | 180 | EXPORT_SYMBOL(boot_cpu_data); |
1da177e4 | 181 | |
0c254e38 AS |
182 | unsigned int def_to_bigsmp; |
183 | ||
1da177e4 LT |
184 | /* for MCA, but anyone else can use it if they want */ |
185 | unsigned int machine_id; | |
186 | unsigned int machine_submodel_id; | |
187 | unsigned int BIOS_revision; | |
1da177e4 | 188 | |
7dea23ec YL |
189 | struct apm_info apm_info; |
190 | EXPORT_SYMBOL(apm_info); | |
191 | ||
192 | #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ | |
193 | defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) | |
194 | struct ist_info ist_info; | |
195 | EXPORT_SYMBOL(ist_info); | |
196 | #else | |
197 | struct ist_info ist_info; | |
198 | #endif | |
199 | ||
200 | #else | |
ed26dbe5 JF |
201 | struct cpuinfo_x86 boot_cpu_data __read_mostly = { |
202 | .x86_phys_bits = MAX_PHYSMEM_BITS, | |
203 | }; | |
7dea23ec YL |
204 | EXPORT_SYMBOL(boot_cpu_data); |
205 | #endif | |
206 | ||
207 | ||
208 | #if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) | |
209 | unsigned long mmu_cr4_features; | |
210 | #else | |
211 | unsigned long mmu_cr4_features = X86_CR4_PAE; | |
212 | #endif | |
213 | ||
5031296c PA |
214 | /* Boot loader ID and version as integers, for the benefit of proc_dointvec */ |
215 | int bootloader_type, bootloader_version; | |
1da177e4 | 216 | |
1da177e4 LT |
217 | /* |
218 | * Setup options | |
219 | */ | |
1da177e4 | 220 | struct screen_info screen_info; |
129f6946 | 221 | EXPORT_SYMBOL(screen_info); |
1da177e4 | 222 | struct edid_info edid_info; |
5e518d76 | 223 | EXPORT_SYMBOL_GPL(edid_info); |
1da177e4 | 224 | |
1da177e4 LT |
225 | extern int root_mountflags; |
226 | ||
e44b7b75 | 227 | unsigned long saved_video_mode; |
1da177e4 | 228 | |
cf8fa920 | 229 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 230 | #define RAMDISK_PROMPT_FLAG 0x8000 |
cf8fa920 | 231 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 232 | |
4e498b66 | 233 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
516cbf37 TB |
234 | #ifdef CONFIG_CMDLINE_BOOL |
235 | static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE; | |
236 | #endif | |
1da177e4 | 237 | |
1da177e4 LT |
238 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
239 | struct edd edd; | |
240 | #ifdef CONFIG_EDD_MODULE | |
241 | EXPORT_SYMBOL(edd); | |
242 | #endif | |
243 | /** | |
244 | * copy_edd() - Copy the BIOS EDD information | |
245 | * from boot_params into a safe place. | |
246 | * | |
247 | */ | |
9eaa192d | 248 | static inline void __init copy_edd(void) |
1da177e4 | 249 | { |
30c82645 PA |
250 | memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer, |
251 | sizeof(edd.mbr_signature)); | |
252 | memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info)); | |
253 | edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries; | |
254 | edd.edd_info_nr = boot_params.eddbuf_entries; | |
1da177e4 LT |
255 | } |
256 | #else | |
9eaa192d | 257 | static inline void __init copy_edd(void) |
1da177e4 LT |
258 | { |
259 | } | |
260 | #endif | |
261 | ||
5368a2be PA |
262 | void * __init extend_brk(size_t size, size_t align) |
263 | { | |
264 | size_t mask = align - 1; | |
265 | void *ret; | |
266 | ||
267 | BUG_ON(_brk_start == 0); | |
268 | BUG_ON(align & mask); | |
269 | ||
270 | _brk_end = (_brk_end + mask) & ~mask; | |
271 | BUG_ON((char *)(_brk_end + size) > __brk_limit); | |
272 | ||
273 | ret = (void *)_brk_end; | |
274 | _brk_end += size; | |
275 | ||
276 | memset(ret, 0, size); | |
277 | ||
278 | return ret; | |
279 | } | |
280 | ||
854c879f PE |
281 | #ifdef CONFIG_X86_64 |
282 | static void __init init_gbpages(void) | |
283 | { | |
284 | if (direct_gbpages && cpu_has_gbpages) | |
285 | printk(KERN_INFO "Using GB pages for direct mapping\n"); | |
286 | else | |
287 | direct_gbpages = 0; | |
288 | } | |
289 | #else | |
290 | static inline void init_gbpages(void) | |
291 | { | |
292 | } | |
e5f15b45 | 293 | static void __init cleanup_highmap(void) |
f005fe12 YL |
294 | { |
295 | } | |
854c879f PE |
296 | #endif |
297 | ||
5368a2be PA |
298 | static void __init reserve_brk(void) |
299 | { | |
300 | if (_brk_end > _brk_start) | |
24aa0788 TH |
301 | memblock_reserve(__pa(_brk_start), |
302 | __pa(_brk_end) - __pa(_brk_start)); | |
5368a2be PA |
303 | |
304 | /* Mark brk area as locked down and no longer taking any | |
305 | new allocations */ | |
306 | _brk_start = 0; | |
307 | } | |
308 | ||
cf8fa920 PA |
309 | #ifdef CONFIG_BLK_DEV_INITRD |
310 | ||
eb1379cb YL |
311 | #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) |
312 | static void __init relocate_initrd(void) | |
cf8fa920 | 313 | { |
c967da6a | 314 | /* Assume only end is not page aligned */ |
ba5b14cc YL |
315 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
316 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
c967da6a | 317 | u64 area_size = PAGE_ALIGN(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 */ | |
a9ce6bc1 | 324 | ramdisk_here = memblock_find_in_range(0, end_of_lowmem, area_size, |
4e29684c | 325 | PAGE_SIZE); |
cf8fa920 | 326 | |
1f5026a7 | 327 | if (!ramdisk_here) |
3945e2c9 YL |
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. */ | |
24aa0788 | 333 | memblock_reserve(ramdisk_here, area_size); |
cf8fa920 PA |
334 | initrd_start = ramdisk_here + PAGE_OFFSET; |
335 | initrd_end = initrd_start + ramdisk_size; | |
f0d43100 YL |
336 | printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n", |
337 | ramdisk_here, ramdisk_here + ramdisk_size); | |
cf8fa920 | 338 | |
cf8fa920 PA |
339 | q = (char *)initrd_start; |
340 | ||
341 | /* Copy any lowmem portion of the initrd */ | |
342 | if (ramdisk_image < end_of_lowmem) { | |
343 | clen = end_of_lowmem - ramdisk_image; | |
344 | p = (char *)__va(ramdisk_image); | |
345 | memcpy(q, p, clen); | |
346 | q += clen; | |
347 | ramdisk_image += clen; | |
348 | ramdisk_size -= clen; | |
349 | } | |
350 | ||
351 | /* Copy the highmem portion of the initrd */ | |
352 | while (ramdisk_size) { | |
353 | slop = ramdisk_image & ~PAGE_MASK; | |
354 | clen = ramdisk_size; | |
355 | if (clen > MAX_MAP_CHUNK-slop) | |
356 | clen = MAX_MAP_CHUNK-slop; | |
357 | mapaddr = ramdisk_image & PAGE_MASK; | |
88b4c146 | 358 | p = early_memremap(mapaddr, clen+slop); |
cf8fa920 | 359 | memcpy(q, p+slop, clen); |
beacfaac | 360 | early_iounmap(p, clen+slop); |
cf8fa920 PA |
361 | q += clen; |
362 | ramdisk_image += clen; | |
363 | ramdisk_size -= clen; | |
364 | } | |
a4c81cf6 | 365 | /* high pages is not converted by early_res_to_bootmem */ |
ba5b14cc YL |
366 | ramdisk_image = boot_params.hdr.ramdisk_image; |
367 | ramdisk_size = boot_params.hdr.ramdisk_size; | |
eb1379cb YL |
368 | printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to" |
369 | " %08llx - %08llx\n", | |
ba5b14cc YL |
370 | ramdisk_image, ramdisk_image + ramdisk_size - 1, |
371 | ramdisk_here, ramdisk_here + ramdisk_size - 1); | |
eb1379cb | 372 | } |
9a27f5c5 | 373 | |
eb1379cb YL |
374 | static void __init reserve_initrd(void) |
375 | { | |
c967da6a | 376 | /* Assume only end is not page aligned */ |
eb1379cb YL |
377 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
378 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
c967da6a | 379 | u64 ramdisk_end = PAGE_ALIGN(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)) { | |
24aa0788 | 389 | memblock_free(ramdisk_image, ramdisk_end - ramdisk_image); |
eb1379cb YL |
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 | |
24aa0788 | 412 | memblock_free(ramdisk_image, ramdisk_end - ramdisk_image); |
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) { | |
f1c2b357 SAS |
429 | u32 data_len, map_len; |
430 | ||
431 | map_len = max(PAGE_SIZE - (pa_data & ~PAGE_MASK), | |
432 | (u64)sizeof(struct setup_data)); | |
433 | data = early_memremap(pa_data, map_len); | |
434 | data_len = data->len + sizeof(struct setup_data); | |
435 | if (data_len > map_len) { | |
436 | early_iounmap(data, map_len); | |
437 | data = early_memremap(pa_data, data_len); | |
438 | map_len = data_len; | |
439 | } | |
440 | ||
257b0fde YL |
441 | switch (data->type) { |
442 | case SETUP_E820_EXT: | |
f1c2b357 | 443 | parse_e820_ext(data); |
257b0fde | 444 | break; |
da6b737b SAS |
445 | case SETUP_DTB: |
446 | add_dtb(pa_data); | |
257b0fde YL |
447 | break; |
448 | default: | |
449 | break; | |
450 | } | |
257b0fde | 451 | pa_data = data->next; |
f1c2b357 | 452 | early_iounmap(data, map_len); |
257b0fde YL |
453 | } |
454 | } | |
455 | ||
a0a0becd | 456 | static void __init e820_reserve_setup_data(void) |
28bb2237 YL |
457 | { |
458 | struct setup_data *data; | |
459 | u64 pa_data; | |
d9a81b44 | 460 | int found = 0; |
28bb2237 YL |
461 | |
462 | if (boot_params.hdr.version < 0x0209) | |
463 | return; | |
464 | pa_data = boot_params.hdr.setup_data; | |
465 | while (pa_data) { | |
88b4c146 | 466 | data = early_memremap(pa_data, sizeof(*data)); |
28bb2237 YL |
467 | e820_update_range(pa_data, sizeof(*data)+data->len, |
468 | E820_RAM, E820_RESERVED_KERN); | |
d9a81b44 | 469 | found = 1; |
28bb2237 YL |
470 | pa_data = data->next; |
471 | early_iounmap(data, sizeof(*data)); | |
472 | } | |
d9a81b44 YL |
473 | if (!found) |
474 | return; | |
475 | ||
28bb2237 | 476 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); |
a0a0becd | 477 | memcpy(&e820_saved, &e820, sizeof(struct e820map)); |
28bb2237 YL |
478 | printk(KERN_INFO "extended physical RAM map:\n"); |
479 | e820_print_map("reserve setup_data"); | |
480 | } | |
481 | ||
a9ce6bc1 | 482 | static void __init memblock_x86_reserve_range_setup_data(void) |
a0a0becd YL |
483 | { |
484 | struct setup_data *data; | |
485 | u64 pa_data; | |
a0a0becd YL |
486 | |
487 | if (boot_params.hdr.version < 0x0209) | |
488 | return; | |
489 | pa_data = boot_params.hdr.setup_data; | |
490 | while (pa_data) { | |
88b4c146 | 491 | data = early_memremap(pa_data, sizeof(*data)); |
24aa0788 | 492 | memblock_reserve(pa_data, sizeof(*data) + data->len); |
a0a0becd YL |
493 | pa_data = data->next; |
494 | early_iounmap(data, sizeof(*data)); | |
495 | } | |
496 | } | |
497 | ||
ccb4defa YL |
498 | /* |
499 | * --------- Crashkernel reservation ------------------------------ | |
500 | */ | |
501 | ||
502 | #ifdef CONFIG_KEXEC | |
32105f7f | 503 | |
7f8595bf PA |
504 | /* |
505 | * Keep the crash kernel below this limit. On 32 bits earlier kernels | |
506 | * would limit the kernel to the low 512 MiB due to mapping restrictions. | |
507 | * On 64 bits, kexec-tools currently limits us to 896 MiB; increase this | |
508 | * limit once kexec-tools are fixed. | |
509 | */ | |
510 | #ifdef CONFIG_X86_32 | |
511 | # define CRASH_KERNEL_ADDR_MAX (512 << 20) | |
512 | #else | |
513 | # define CRASH_KERNEL_ADDR_MAX (896 << 20) | |
514 | #endif | |
515 | ||
29f784e3 | 516 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
517 | { |
518 | unsigned long long total_mem; | |
519 | unsigned long long crash_size, crash_base; | |
520 | int ret; | |
521 | ||
09c71bfd | 522 | total_mem = memblock_phys_mem_size(); |
ccb4defa YL |
523 | |
524 | ret = parse_crashkernel(boot_command_line, total_mem, | |
525 | &crash_size, &crash_base); | |
32105f7f BW |
526 | if (ret != 0 || crash_size <= 0) |
527 | return; | |
528 | ||
529 | /* 0 means: find the address automatically */ | |
530 | if (crash_base <= 0) { | |
44280733 YL |
531 | const unsigned long long alignment = 16<<20; /* 16M */ |
532 | ||
9f4c1396 | 533 | /* |
7f8595bf | 534 | * kexec want bzImage is below CRASH_KERNEL_ADDR_MAX |
9f4c1396 YL |
535 | */ |
536 | crash_base = memblock_find_in_range(alignment, | |
7f8595bf | 537 | CRASH_KERNEL_ADDR_MAX, crash_size, alignment); |
9f4c1396 | 538 | |
1f5026a7 | 539 | if (!crash_base) { |
44280733 | 540 | pr_info("crashkernel reservation failed - No suitable area found.\n"); |
ccb4defa YL |
541 | return; |
542 | } | |
32105f7f | 543 | } else { |
44280733 YL |
544 | unsigned long long start; |
545 | ||
9f4c1396 YL |
546 | start = memblock_find_in_range(crash_base, |
547 | crash_base + crash_size, crash_size, 1<<20); | |
44280733 YL |
548 | if (start != crash_base) { |
549 | pr_info("crashkernel reservation failed - memory is in use.\n"); | |
ccb4defa YL |
550 | return; |
551 | } | |
32105f7f | 552 | } |
24aa0788 | 553 | memblock_reserve(crash_base, crash_size); |
ccb4defa | 554 | |
32105f7f BW |
555 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " |
556 | "for crashkernel (System RAM: %ldMB)\n", | |
557 | (unsigned long)(crash_size >> 20), | |
558 | (unsigned long)(crash_base >> 20), | |
559 | (unsigned long)(total_mem >> 20)); | |
ccb4defa | 560 | |
32105f7f BW |
561 | crashk_res.start = crash_base; |
562 | crashk_res.end = crash_base + crash_size - 1; | |
563 | insert_resource(&iomem_resource, &crashk_res); | |
ccb4defa YL |
564 | } |
565 | #else | |
29f784e3 | 566 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
567 | { |
568 | } | |
569 | #endif | |
570 | ||
bdba0e70 YL |
571 | static struct resource standard_io_resources[] = { |
572 | { .name = "dma1", .start = 0x00, .end = 0x1f, | |
573 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
574 | { .name = "pic1", .start = 0x20, .end = 0x21, | |
575 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
576 | { .name = "timer0", .start = 0x40, .end = 0x43, | |
577 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
578 | { .name = "timer1", .start = 0x50, .end = 0x53, | |
579 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
580 | { .name = "keyboard", .start = 0x60, .end = 0x60, | |
581 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
582 | { .name = "keyboard", .start = 0x64, .end = 0x64, | |
583 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
584 | { .name = "dma page reg", .start = 0x80, .end = 0x8f, | |
585 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
586 | { .name = "pic2", .start = 0xa0, .end = 0xa1, | |
587 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
588 | { .name = "dma2", .start = 0xc0, .end = 0xdf, | |
589 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
590 | { .name = "fpu", .start = 0xf0, .end = 0xff, | |
591 | .flags = IORESOURCE_BUSY | IORESOURCE_IO } | |
592 | }; | |
593 | ||
8fee697d | 594 | void __init reserve_standard_io_resources(void) |
bdba0e70 YL |
595 | { |
596 | int i; | |
597 | ||
598 | /* request I/O space for devices used on all i[345]86 PCs */ | |
599 | for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) | |
600 | request_resource(&ioport_resource, &standard_io_resources[i]); | |
601 | ||
602 | } | |
603 | ||
042be38e YL |
604 | static __init void reserve_ibft_region(void) |
605 | { | |
606 | unsigned long addr, size = 0; | |
607 | ||
608 | addr = find_ibft_region(&size); | |
609 | ||
610 | if (size) | |
24aa0788 | 611 | memblock_reserve(addr, size); |
042be38e YL |
612 | } |
613 | ||
9ea77bdb | 614 | static unsigned reserve_low = CONFIG_X86_RESERVE_LOW << 10; |
5649b7c3 | 615 | |
1b5576e6 YL |
616 | static void __init trim_bios_range(void) |
617 | { | |
618 | /* | |
619 | * A special case is the first 4Kb of memory; | |
620 | * This is a BIOS owned area, not kernel ram, but generally | |
621 | * not listed as such in the E820 table. | |
d0cd7425 PA |
622 | * |
623 | * This typically reserves additional memory (64KiB by default) | |
624 | * since some BIOSes are known to corrupt low memory. See the | |
9ea77bdb | 625 | * Kconfig help text for X86_RESERVE_LOW. |
1b5576e6 | 626 | */ |
9ea77bdb | 627 | e820_update_range(0, ALIGN(reserve_low, PAGE_SIZE), |
d0cd7425 PA |
628 | E820_RAM, E820_RESERVED); |
629 | ||
1b5576e6 YL |
630 | /* |
631 | * special case: Some BIOSen report the PC BIOS | |
632 | * area (640->1Mb) as ram even though it is not. | |
633 | * take them out. | |
634 | */ | |
635 | e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1); | |
636 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
637 | } | |
638 | ||
9ea77bdb PA |
639 | static int __init parse_reservelow(char *p) |
640 | { | |
641 | unsigned long long size; | |
642 | ||
643 | if (!p) | |
644 | return -EINVAL; | |
645 | ||
646 | size = memparse(p, &p); | |
647 | ||
648 | if (size < 4096) | |
649 | size = 4096; | |
650 | ||
651 | if (size > 640*1024) | |
652 | size = 640*1024; | |
653 | ||
654 | reserve_low = size; | |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
659 | early_param("reservelow", parse_reservelow); | |
660 | ||
1da177e4 LT |
661 | /* |
662 | * Determine if we were loaded by an EFI loader. If so, then we have also been | |
663 | * passed the efi memmap, systab, etc., so we should use these data structures | |
664 | * for initialization. Note, the efi init code path is determined by the | |
665 | * global efi_enabled. This allows the same kernel image to be used on existing | |
666 | * systems (with a traditional BIOS) as well as on EFI systems. | |
667 | */ | |
76934ed4 YL |
668 | /* |
669 | * setup_arch - architecture-specific boot-time initializations | |
670 | * | |
671 | * Note: On x86_64, fixmaps are ready for use even before this is called. | |
672 | */ | |
673 | ||
1da177e4 LT |
674 | void __init setup_arch(char **cmdline_p) |
675 | { | |
76934ed4 | 676 | #ifdef CONFIG_X86_32 |
1da177e4 | 677 | memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); |
3b33553b | 678 | visws_early_detect(); |
b40827fa BP |
679 | |
680 | /* | |
681 | * copy kernel address range established so far and switch | |
682 | * to the proper swapper page table | |
683 | */ | |
684 | clone_pgd_range(swapper_pg_dir + KERNEL_PGD_BOUNDARY, | |
685 | initial_page_table + KERNEL_PGD_BOUNDARY, | |
686 | KERNEL_PGD_PTRS); | |
687 | ||
688 | load_cr3(swapper_pg_dir); | |
689 | __flush_tlb_all(); | |
76934ed4 YL |
690 | #else |
691 | printk(KERN_INFO "Command line: %s\n", boot_command_line); | |
692 | #endif | |
1da177e4 | 693 | |
9863c90f AK |
694 | /* |
695 | * If we have OLPC OFW, we might end up relocating the fixmap due to | |
696 | * reserve_top(), so do this before touching the ioremap area. | |
697 | */ | |
fd699c76 AS |
698 | olpc_ofw_detect(); |
699 | ||
29c84391 | 700 | early_trap_init(); |
9e882c92 | 701 | early_cpu_init(); |
1a98fd14 JF |
702 | early_ioremap_init(); |
703 | ||
fd699c76 AS |
704 | setup_olpc_ofw_pgd(); |
705 | ||
30c82645 PA |
706 | ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); |
707 | screen_info = boot_params.screen_info; | |
708 | edid_info = boot_params.edid_info; | |
76934ed4 | 709 | #ifdef CONFIG_X86_32 |
30c82645 PA |
710 | apm_info.bios = boot_params.apm_bios_info; |
711 | ist_info = boot_params.ist_info; | |
76934ed4 | 712 | if (boot_params.sys_desc_table.length != 0) { |
30c82645 PA |
713 | machine_id = boot_params.sys_desc_table.table[0]; |
714 | machine_submodel_id = boot_params.sys_desc_table.table[1]; | |
715 | BIOS_revision = boot_params.sys_desc_table.table[2]; | |
1da177e4 | 716 | } |
76934ed4 YL |
717 | #endif |
718 | saved_video_mode = boot_params.hdr.vid_mode; | |
30c82645 | 719 | bootloader_type = boot_params.hdr.type_of_loader; |
5031296c PA |
720 | if ((bootloader_type >> 4) == 0xe) { |
721 | bootloader_type &= 0xf; | |
722 | bootloader_type |= (boot_params.hdr.ext_loader_type+0x10) << 4; | |
723 | } | |
724 | bootloader_version = bootloader_type & 0xf; | |
725 | bootloader_version |= boot_params.hdr.ext_loader_ver << 4; | |
1da177e4 LT |
726 | |
727 | #ifdef CONFIG_BLK_DEV_RAM | |
30c82645 PA |
728 | rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK; |
729 | rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); | |
730 | rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); | |
1da177e4 | 731 | #endif |
7465252e YL |
732 | #ifdef CONFIG_EFI |
733 | if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, | |
1adbfa35 | 734 | "EL32", 4)) { |
7465252e | 735 | efi_enabled = 1; |
1adbfa35 OJ |
736 | efi_64bit = false; |
737 | } else if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, | |
738 | "EL64", 4)) { | |
739 | efi_enabled = 1; | |
740 | efi_64bit = true; | |
7465252e | 741 | } |
1adbfa35 OJ |
742 | if (efi_enabled && efi_memblock_x86_reserve_range()) |
743 | efi_enabled = 0; | |
7465252e YL |
744 | #endif |
745 | ||
42bbdb43 | 746 | x86_init.oem.arch_setup(); |
2215e69d | 747 | |
419afdf5 | 748 | iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1; |
0dbfafa5 | 749 | setup_memory_map(); |
28bb2237 | 750 | parse_setup_data(); |
a0a0becd YL |
751 | /* update the e820_saved too */ |
752 | e820_reserve_setup_data(); | |
28bb2237 | 753 | |
1da177e4 LT |
754 | copy_edd(); |
755 | ||
30c82645 | 756 | if (!boot_params.hdr.root_flags) |
1da177e4 LT |
757 | root_mountflags &= ~MS_RDONLY; |
758 | init_mm.start_code = (unsigned long) _text; | |
759 | init_mm.end_code = (unsigned long) _etext; | |
760 | init_mm.end_data = (unsigned long) _edata; | |
93dbda7c | 761 | init_mm.brk = _brk_end; |
1da177e4 LT |
762 | |
763 | code_resource.start = virt_to_phys(_text); | |
764 | code_resource.end = virt_to_phys(_etext)-1; | |
765 | data_resource.start = virt_to_phys(_etext); | |
766 | data_resource.end = virt_to_phys(_edata)-1; | |
00bf4098 BW |
767 | bss_resource.start = virt_to_phys(&__bss_start); |
768 | bss_resource.end = virt_to_phys(&__bss_stop)-1; | |
1da177e4 | 769 | |
516cbf37 TB |
770 | #ifdef CONFIG_CMDLINE_BOOL |
771 | #ifdef CONFIG_CMDLINE_OVERRIDE | |
772 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
773 | #else | |
774 | if (builtin_cmdline[0]) { | |
775 | /* append boot loader cmdline to builtin */ | |
776 | strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE); | |
777 | strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE); | |
778 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
779 | } | |
780 | #endif | |
781 | #endif | |
782 | ||
eda6da92 YL |
783 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
784 | *cmdline_p = command_line; | |
785 | ||
eda6da92 | 786 | /* |
4b0f3b81 KC |
787 | * x86_configure_nx() is called before parse_early_param() to detect |
788 | * whether hardware doesn't support NX (so that the early EHCI debug | |
789 | * console setup can safely call set_fixmap()). It may then be called | |
790 | * again from within noexec_setup() during parsing early parameters | |
791 | * to honor the respective command line option. | |
eda6da92 | 792 | */ |
4763ed4d | 793 | x86_configure_nx(); |
eda6da92 YL |
794 | |
795 | parse_early_param(); | |
796 | ||
4b0f3b81 | 797 | x86_report_nx(); |
0ad5bce7 | 798 | |
28bb2237 | 799 | /* after early param, so could get panic from serial */ |
a9ce6bc1 | 800 | memblock_x86_reserve_range_setup_data(); |
28bb2237 | 801 | |
76934ed4 | 802 | if (acpi_mps_check()) { |
3eb11edc | 803 | #ifdef CONFIG_X86_LOCAL_APIC |
76934ed4 | 804 | disable_apic = 1; |
3eb11edc | 805 | #endif |
988781dc | 806 | setup_clear_cpu_cap(X86_FEATURE_APIC); |
3c999f14 YL |
807 | } |
808 | ||
dc7c65db LT |
809 | #ifdef CONFIG_PCI |
810 | if (pci_early_dump_regs) | |
811 | early_dump_pci_devices(); | |
812 | #endif | |
813 | ||
0dbfafa5 | 814 | finish_e820_parsing(); |
1a3f239d | 815 | |
ff0c0874 BM |
816 | if (efi_enabled) |
817 | efi_init(); | |
818 | ||
2216d199 YL |
819 | dmi_scan_machine(); |
820 | ||
88b094fb AK |
821 | /* |
822 | * VMware detection requires dmi to be available, so this | |
823 | * needs to be done after dmi_scan_machine, for the BP. | |
824 | */ | |
2d826404 | 825 | init_hypervisor_platform(); |
88b094fb | 826 | |
f7cf5a5b | 827 | x86_init.resources.probe_roms(); |
41c094fd YL |
828 | |
829 | /* after parse_early_param, so could debug it */ | |
830 | insert_resource(&iomem_resource, &code_resource); | |
831 | insert_resource(&iomem_resource, &data_resource); | |
832 | insert_resource(&iomem_resource, &bss_resource); | |
833 | ||
1b5576e6 | 834 | trim_bios_range(); |
76934ed4 | 835 | #ifdef CONFIG_X86_32 |
cc9f7a0c YL |
836 | if (ppro_with_ram_bug()) { |
837 | e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM, | |
838 | E820_RESERVED); | |
839 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
840 | printk(KERN_INFO "fixed physical RAM map:\n"); | |
841 | e820_print_map("bad_ppro"); | |
842 | } | |
76934ed4 YL |
843 | #else |
844 | early_gart_iommu_check(); | |
845 | #endif | |
cc9f7a0c | 846 | |
7b2a0a6c YL |
847 | /* |
848 | * partially used pages are not usable - thus | |
849 | * we are rounding upwards: | |
850 | */ | |
f361a450 | 851 | max_pfn = e820_end_of_ram_pfn(); |
7b2a0a6c | 852 | |
093af8d7 YL |
853 | /* update e820 for memory not covered by WB MTRRs */ |
854 | mtrr_bp_init(); | |
2dc807b3 | 855 | if (mtrr_trim_uncached_memory(max_pfn)) |
f361a450 | 856 | max_pfn = e820_end_of_ram_pfn(); |
76c32418 | 857 | |
76934ed4 | 858 | #ifdef CONFIG_X86_32 |
4e29684c | 859 | /* max_low_pfn get updated here */ |
2ec65f8b | 860 | find_low_pfn_range(); |
76934ed4 YL |
861 | #else |
862 | num_physpages = max_pfn; | |
863 | ||
06cd9a7d | 864 | check_x2apic(); |
76934ed4 YL |
865 | |
866 | /* How many end-of-memory variables you have, grandma! */ | |
867 | /* need this before calling reserve_initrd */ | |
f361a450 YL |
868 | if (max_pfn > (1UL<<(32 - PAGE_SHIFT))) |
869 | max_low_pfn = e820_end_of_low_ram_pfn(); | |
870 | else | |
871 | max_low_pfn = max_pfn; | |
872 | ||
76934ed4 | 873 | high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; |
5394f80f JF |
874 | #endif |
875 | ||
893f38d1 YL |
876 | /* |
877 | * Find and reserve possible boot-time SMP configuration: | |
878 | */ | |
879 | find_smp_config(); | |
880 | ||
042be38e YL |
881 | reserve_ibft_region(); |
882 | ||
72d7c3b3 YL |
883 | /* |
884 | * Need to conclude brk, before memblock_x86_fill() | |
885 | * it could use memblock_find_in_range, could overlap with | |
886 | * brk area. | |
887 | */ | |
888 | reserve_brk(); | |
889 | ||
e5f15b45 YL |
890 | cleanup_highmap(); |
891 | ||
72d7c3b3 YL |
892 | memblock.current_limit = get_max_mapped(); |
893 | memblock_x86_fill(); | |
894 | ||
916f676f MG |
895 | /* |
896 | * The EFI specification says that boot service code won't be called | |
897 | * after ExitBootServices(). This is, in fact, a lie. | |
898 | */ | |
899 | if (efi_enabled) | |
900 | efi_reserve_boot_services(); | |
901 | ||
72d7c3b3 YL |
902 | /* preallocate 4k for mptable mpc */ |
903 | early_reserve_e820_mpc_new(); | |
904 | ||
905 | #ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION | |
906 | setup_bios_corruption_check(); | |
907 | #endif | |
908 | ||
909 | printk(KERN_DEBUG "initial memory mapped : 0 - %08lx\n", | |
910 | max_pfn_mapped<<PAGE_SHIFT); | |
911 | ||
4822b7fc | 912 | setup_trampolines(); |
893f38d1 | 913 | |
854c879f PE |
914 | init_gbpages(); |
915 | ||
4e29684c | 916 | /* max_pfn_mapped is updated here */ |
f361a450 YL |
917 | max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); |
918 | max_pfn_mapped = max_low_pfn_mapped; | |
919 | ||
f8911250 TH |
920 | #ifdef CONFIG_X86_64 |
921 | if (max_pfn > max_low_pfn) { | |
922 | max_pfn_mapped = init_memory_mapping(1UL<<32, | |
923 | max_pfn<<PAGE_SHIFT); | |
924 | /* can we preseve max_low_pfn ?*/ | |
925 | max_low_pfn = max_pfn; | |
926 | } | |
927 | #endif | |
72d7c3b3 | 928 | memblock.current_limit = get_max_mapped(); |
4e29684c | 929 | |
e7b37895 YL |
930 | /* |
931 | * NOTE: On x86-32, only from this point on, fixmaps are ready for use. | |
932 | */ | |
933 | ||
934 | #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT | |
935 | if (init_ohci1394_dma_early) | |
936 | init_ohci1394_dma_on_all_controllers(); | |
937 | #endif | |
162a7e75 MT |
938 | /* Allocate bigger log buffer */ |
939 | setup_log_buf(1); | |
e7b37895 | 940 | |
2ec65f8b YL |
941 | reserve_initrd(); |
942 | ||
44280733 YL |
943 | reserve_crashkernel(); |
944 | ||
76934ed4 | 945 | vsmp_init(); |
76934ed4 | 946 | |
1c6e5503 YL |
947 | io_delay_init(); |
948 | ||
1c6e5503 YL |
949 | /* |
950 | * Parse the ACPI tables for possible boot-time SMP configuration. | |
951 | */ | |
952 | acpi_boot_table_init(); | |
1c6e5503 | 953 | |
2e42060c JS |
954 | early_acpi_boot_init(); |
955 | ||
d8fc3afc | 956 | initmem_init(); |
6f2a7536 | 957 | memblock_find_dma_reserve(); |
91467bdf | 958 | |
790c73f6 GOC |
959 | #ifdef CONFIG_KVM_CLOCK |
960 | kvmclock_init(); | |
961 | #endif | |
962 | ||
030cb6c0 | 963 | x86_init.paging.pagetable_setup_start(swapper_pg_dir); |
1da177e4 | 964 | paging_init(); |
030cb6c0 | 965 | x86_init.paging.pagetable_setup_done(swapper_pg_dir); |
f212ec4b | 966 | |
4da9484b PA |
967 | if (boot_cpu_data.cpuid_level >= 0) { |
968 | /* A CPU has %cr4 if and only if it has CPUID */ | |
969 | mmu_cr4_features = read_cr4(); | |
970 | } | |
971 | ||
b40827fa BP |
972 | #ifdef CONFIG_X86_32 |
973 | /* sync back kernel address range */ | |
974 | clone_pgd_range(initial_page_table + KERNEL_PGD_BOUNDARY, | |
975 | swapper_pg_dir + KERNEL_PGD_BOUNDARY, | |
976 | KERNEL_PGD_PTRS); | |
977 | #endif | |
fd89a137 | 978 | |
31625340 JC |
979 | tboot_probe(); |
980 | ||
76934ed4 YL |
981 | #ifdef CONFIG_X86_64 |
982 | map_vsyscall(); | |
983 | #endif | |
984 | ||
1a3f239d | 985 | generic_apic_probe(); |
1da177e4 | 986 | |
54ef3400 | 987 | early_quirks(); |
d44647b0 | 988 | |
295deae4 YL |
989 | /* |
990 | * Read APIC and some other early information from ACPI tables. | |
991 | */ | |
1da177e4 | 992 | acpi_boot_init(); |
efafc8b2 | 993 | sfi_init(); |
a906fdaa | 994 | x86_dtb_init(); |
04606618 | 995 | |
295deae4 YL |
996 | /* |
997 | * get boot-time SMP configuration: | |
998 | */ | |
e0da3364 YL |
999 | if (smp_found_config) |
1000 | get_smp_config(); | |
76934ed4 | 1001 | |
329513a3 | 1002 | prefill_possible_map(); |
301e6190 | 1003 | |
5f4765f9 | 1004 | init_cpu_to_node(); |
5f4765f9 | 1005 | |
76934ed4 | 1006 | init_apic_mappings(); |
23f9b267 | 1007 | ioapic_and_gsi_init(); |
9d6a4d08 | 1008 | |
295deae4 | 1009 | kvm_guest_init(); |
1da177e4 | 1010 | |
41c094fd | 1011 | e820_reserve_resources(); |
bf62f398 | 1012 | e820_mark_nosave_regions(max_low_pfn); |
1da177e4 | 1013 | |
8fee697d | 1014 | x86_init.resources.reserve_resources(); |
41c094fd YL |
1015 | |
1016 | e820_setup_gap(); | |
1017 | ||
1da177e4 LT |
1018 | #ifdef CONFIG_VT |
1019 | #if defined(CONFIG_VGA_CONSOLE) | |
1020 | if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) | |
1021 | conswitchp = &vga_con; | |
1022 | #elif defined(CONFIG_DUMMY_CONSOLE) | |
1023 | conswitchp = &dummy_con; | |
1024 | #endif | |
1025 | #endif | |
6f30c1ac | 1026 | x86_init.oem.banner(); |
a2202aa2 | 1027 | |
6b617e22 FT |
1028 | x86_init.timers.wallclock_init(); |
1029 | ||
cf8ff6b6 FT |
1030 | x86_platform.wallclock_init(); |
1031 | ||
a2202aa2 | 1032 | mcheck_init(); |
f49aa448 | 1033 | |
dc326fca | 1034 | arch_init_ideal_nops(); |
1da177e4 | 1035 | } |
5649b7c3 | 1036 | |
9be1b56a IM |
1037 | #ifdef CONFIG_X86_32 |
1038 | ||
8fee697d TG |
1039 | static struct resource video_ram_resource = { |
1040 | .name = "Video RAM area", | |
1041 | .start = 0xa0000, | |
1042 | .end = 0xbffff, | |
1043 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
9be1b56a IM |
1044 | }; |
1045 | ||
8fee697d | 1046 | void __init i386_reserve_resources(void) |
9be1b56a | 1047 | { |
8fee697d TG |
1048 | request_resource(&iomem_resource, &video_ram_resource); |
1049 | reserve_standard_io_resources(); | |
9be1b56a IM |
1050 | } |
1051 | ||
9be1b56a | 1052 | #endif /* CONFIG_X86_32 */ |