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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> | |
37 | #include <linux/mca.h> | |
38 | #include <linux/root_dev.h> | |
39 | #include <linux/highmem.h> | |
40 | #include <linux/module.h> | |
41 | #include <linux/efi.h> | |
42 | #include <linux/init.h> | |
43 | #include <linux/edd.h> | |
138fe4e0 | 44 | #include <linux/iscsi_ibft.h> |
1da177e4 | 45 | #include <linux/nodemask.h> |
1bc3b91a | 46 | #include <linux/kexec.h> |
e9928674 | 47 | #include <linux/dmi.h> |
22a9835c | 48 | #include <linux/pfn.h> |
376ff035 | 49 | #include <linux/pci.h> |
46d671b5 | 50 | #include <asm/pci-direct.h> |
f212ec4b | 51 | #include <linux/init_ohci1394_dma.h> |
790c73f6 | 52 | #include <linux/kvm_para.h> |
1bc3b91a | 53 | |
46d671b5 YL |
54 | #include <linux/errno.h> |
55 | #include <linux/kernel.h> | |
56 | #include <linux/stddef.h> | |
57 | #include <linux/unistd.h> | |
58 | #include <linux/ptrace.h> | |
46d671b5 YL |
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> | |
1164dd00 | 87 | #include <asm/setup_arch.h> |
ce3fe6b2 | 88 | #include <asm/bios_ebda.h> |
00bf4098 | 89 | #include <asm/cacheflush.h> |
2fde61fd | 90 | #include <asm/processor.h> |
cc9f7a0c | 91 | #include <asm/bugs.h> |
1da177e4 | 92 | |
46d671b5 | 93 | #include <asm/vsyscall.h> |
6e5385d4 | 94 | #include <asm/cpu.h> |
46d671b5 YL |
95 | #include <asm/desc.h> |
96 | #include <asm/dma.h> | |
46a7fa27 | 97 | #include <asm/iommu.h> |
1d9b16d1 | 98 | #include <asm/gart.h> |
46d671b5 YL |
99 | #include <asm/mmu_context.h> |
100 | #include <asm/proto.h> | |
101 | ||
46d671b5 | 102 | #include <asm/paravirt.h> |
88b094fb | 103 | #include <asm/hypervisor.h> |
fd699c76 | 104 | #include <asm/olpc_ofw.h> |
46d671b5 YL |
105 | |
106 | #include <asm/percpu.h> | |
46d671b5 YL |
107 | #include <asm/topology.h> |
108 | #include <asm/apicdef.h> | |
23ac4ae8 | 109 | #include <asm/amd_nb.h> |
55f26239 YL |
110 | #ifdef CONFIG_X86_64 |
111 | #include <asm/numa_64.h> | |
112 | #endif | |
a2202aa2 | 113 | #include <asm/mce.h> |
f49aa448 | 114 | #include <asm/alternative.h> |
da6b737b | 115 | #include <asm/prom.h> |
46d671b5 | 116 | |
2b72394e PE |
117 | /* |
118 | * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries. | |
119 | * The direct mapping extends to max_pfn_mapped, so that we can directly access | |
120 | * apertures, ACPI and other tables without having to play with fixmaps. | |
121 | */ | |
122 | unsigned long max_low_pfn_mapped; | |
123 | unsigned long max_pfn_mapped; | |
124 | ||
e808bae2 | 125 | #ifdef CONFIG_DMI |
796216a5 | 126 | RESERVE_BRK(dmi_alloc, 65536); |
e808bae2 | 127 | #endif |
796216a5 | 128 | |
c0b5842a | 129 | |
93dbda7c JF |
130 | static __initdata unsigned long _brk_start = (unsigned long)__brk_base; |
131 | unsigned long _brk_end = (unsigned long)__brk_base; | |
132 | ||
c0b5842a IM |
133 | #ifdef CONFIG_X86_64 |
134 | int default_cpu_present_to_apicid(int mps_cpu) | |
135 | { | |
136 | return __default_cpu_present_to_apicid(mps_cpu); | |
137 | } | |
138 | ||
e11dadab | 139 | int default_check_phys_apicid_present(int phys_apicid) |
c0b5842a | 140 | { |
e11dadab | 141 | return __default_check_phys_apicid_present(phys_apicid); |
c0b5842a IM |
142 | } |
143 | #endif | |
144 | ||
217b8ce8 YL |
145 | #ifndef CONFIG_DEBUG_BOOT_PARAMS |
146 | struct boot_params __initdata boot_params; | |
147 | #else | |
148 | struct boot_params boot_params; | |
149 | #endif | |
150 | ||
1da177e4 LT |
151 | /* |
152 | * Machine setup.. | |
153 | */ | |
c9cce83d BW |
154 | static struct resource data_resource = { |
155 | .name = "Kernel data", | |
156 | .start = 0, | |
157 | .end = 0, | |
158 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
159 | }; | |
160 | ||
161 | static struct resource code_resource = { | |
162 | .name = "Kernel code", | |
163 | .start = 0, | |
164 | .end = 0, | |
165 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
166 | }; | |
167 | ||
168 | static struct resource bss_resource = { | |
169 | .name = "Kernel bss", | |
170 | .start = 0, | |
171 | .end = 0, | |
172 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
173 | }; | |
174 | ||
7dea23ec YL |
175 | |
176 | #ifdef CONFIG_X86_32 | |
1da177e4 | 177 | /* cpu data as detected by the assembly code in head.S */ |
7dea23ec | 178 | struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
1da177e4 | 179 | /* common cpu data for all cpus */ |
7dea23ec | 180 | struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
129f6946 | 181 | EXPORT_SYMBOL(boot_cpu_data); |
7dea23ec YL |
182 | static void set_mca_bus(int x) |
183 | { | |
184 | #ifdef CONFIG_MCA | |
185 | MCA_bus = x; | |
186 | #endif | |
187 | } | |
1da177e4 | 188 | |
0c254e38 AS |
189 | unsigned int def_to_bigsmp; |
190 | ||
1da177e4 LT |
191 | /* for MCA, but anyone else can use it if they want */ |
192 | unsigned int machine_id; | |
193 | unsigned int machine_submodel_id; | |
194 | unsigned int BIOS_revision; | |
1da177e4 | 195 | |
7dea23ec YL |
196 | struct apm_info apm_info; |
197 | EXPORT_SYMBOL(apm_info); | |
198 | ||
199 | #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ | |
200 | defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) | |
201 | struct ist_info ist_info; | |
202 | EXPORT_SYMBOL(ist_info); | |
203 | #else | |
204 | struct ist_info ist_info; | |
205 | #endif | |
206 | ||
207 | #else | |
ed26dbe5 JF |
208 | struct cpuinfo_x86 boot_cpu_data __read_mostly = { |
209 | .x86_phys_bits = MAX_PHYSMEM_BITS, | |
210 | }; | |
7dea23ec YL |
211 | EXPORT_SYMBOL(boot_cpu_data); |
212 | #endif | |
213 | ||
214 | ||
215 | #if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) | |
216 | unsigned long mmu_cr4_features; | |
217 | #else | |
218 | unsigned long mmu_cr4_features = X86_CR4_PAE; | |
219 | #endif | |
220 | ||
5031296c PA |
221 | /* Boot loader ID and version as integers, for the benefit of proc_dointvec */ |
222 | int bootloader_type, bootloader_version; | |
1da177e4 | 223 | |
1da177e4 LT |
224 | /* |
225 | * Setup options | |
226 | */ | |
1da177e4 | 227 | struct screen_info screen_info; |
129f6946 | 228 | EXPORT_SYMBOL(screen_info); |
1da177e4 | 229 | struct edid_info edid_info; |
5e518d76 | 230 | EXPORT_SYMBOL_GPL(edid_info); |
1da177e4 | 231 | |
1da177e4 LT |
232 | extern int root_mountflags; |
233 | ||
e44b7b75 | 234 | unsigned long saved_video_mode; |
1da177e4 | 235 | |
cf8fa920 | 236 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 237 | #define RAMDISK_PROMPT_FLAG 0x8000 |
cf8fa920 | 238 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 239 | |
4e498b66 | 240 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
516cbf37 TB |
241 | #ifdef CONFIG_CMDLINE_BOOL |
242 | static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE; | |
243 | #endif | |
1da177e4 | 244 | |
1da177e4 LT |
245 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
246 | struct edd edd; | |
247 | #ifdef CONFIG_EDD_MODULE | |
248 | EXPORT_SYMBOL(edd); | |
249 | #endif | |
250 | /** | |
251 | * copy_edd() - Copy the BIOS EDD information | |
252 | * from boot_params into a safe place. | |
253 | * | |
254 | */ | |
9eaa192d | 255 | static inline void __init copy_edd(void) |
1da177e4 | 256 | { |
30c82645 PA |
257 | memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer, |
258 | sizeof(edd.mbr_signature)); | |
259 | memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info)); | |
260 | edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries; | |
261 | edd.edd_info_nr = boot_params.eddbuf_entries; | |
1da177e4 LT |
262 | } |
263 | #else | |
9eaa192d | 264 | static inline void __init copy_edd(void) |
1da177e4 LT |
265 | { |
266 | } | |
267 | #endif | |
268 | ||
5368a2be PA |
269 | void * __init extend_brk(size_t size, size_t align) |
270 | { | |
271 | size_t mask = align - 1; | |
272 | void *ret; | |
273 | ||
274 | BUG_ON(_brk_start == 0); | |
275 | BUG_ON(align & mask); | |
276 | ||
277 | _brk_end = (_brk_end + mask) & ~mask; | |
278 | BUG_ON((char *)(_brk_end + size) > __brk_limit); | |
279 | ||
280 | ret = (void *)_brk_end; | |
281 | _brk_end += size; | |
282 | ||
283 | memset(ret, 0, size); | |
284 | ||
285 | return ret; | |
286 | } | |
287 | ||
854c879f PE |
288 | #ifdef CONFIG_X86_64 |
289 | static void __init init_gbpages(void) | |
290 | { | |
291 | if (direct_gbpages && cpu_has_gbpages) | |
292 | printk(KERN_INFO "Using GB pages for direct mapping\n"); | |
293 | else | |
294 | direct_gbpages = 0; | |
295 | } | |
296 | #else | |
297 | static inline void init_gbpages(void) | |
298 | { | |
299 | } | |
e5f15b45 | 300 | static void __init cleanup_highmap(void) |
f005fe12 YL |
301 | { |
302 | } | |
854c879f PE |
303 | #endif |
304 | ||
5368a2be PA |
305 | static void __init reserve_brk(void) |
306 | { | |
307 | if (_brk_end > _brk_start) | |
24aa0788 TH |
308 | memblock_reserve(__pa(_brk_start), |
309 | __pa(_brk_end) - __pa(_brk_start)); | |
5368a2be PA |
310 | |
311 | /* Mark brk area as locked down and no longer taking any | |
312 | new allocations */ | |
313 | _brk_start = 0; | |
314 | } | |
315 | ||
cf8fa920 PA |
316 | #ifdef CONFIG_BLK_DEV_INITRD |
317 | ||
eb1379cb YL |
318 | #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) |
319 | static void __init relocate_initrd(void) | |
cf8fa920 | 320 | { |
c967da6a | 321 | /* Assume only end is not page aligned */ |
ba5b14cc YL |
322 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
323 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
c967da6a | 324 | u64 area_size = PAGE_ALIGN(ramdisk_size); |
8c5dd8f4 | 325 | u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; |
ba5b14cc | 326 | u64 ramdisk_here; |
eb1379cb YL |
327 | unsigned long slop, clen, mapaddr; |
328 | char *p, *q; | |
cf8fa920 PA |
329 | |
330 | /* We need to move the initrd down into lowmem */ | |
a9ce6bc1 | 331 | ramdisk_here = memblock_find_in_range(0, end_of_lowmem, area_size, |
4e29684c | 332 | PAGE_SIZE); |
cf8fa920 | 333 | |
1f5026a7 | 334 | if (!ramdisk_here) |
3945e2c9 YL |
335 | panic("Cannot find place for new RAMDISK of size %lld\n", |
336 | ramdisk_size); | |
337 | ||
cf8fa920 PA |
338 | /* Note: this includes all the lowmem currently occupied by |
339 | the initrd, we rely on that fact to keep the data intact. */ | |
24aa0788 | 340 | memblock_reserve(ramdisk_here, area_size); |
cf8fa920 PA |
341 | initrd_start = ramdisk_here + PAGE_OFFSET; |
342 | initrd_end = initrd_start + ramdisk_size; | |
f0d43100 YL |
343 | printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n", |
344 | ramdisk_here, ramdisk_here + ramdisk_size); | |
cf8fa920 | 345 | |
cf8fa920 PA |
346 | q = (char *)initrd_start; |
347 | ||
348 | /* Copy any lowmem portion of the initrd */ | |
349 | if (ramdisk_image < end_of_lowmem) { | |
350 | clen = end_of_lowmem - ramdisk_image; | |
351 | p = (char *)__va(ramdisk_image); | |
352 | memcpy(q, p, clen); | |
353 | q += clen; | |
354 | ramdisk_image += clen; | |
355 | ramdisk_size -= clen; | |
356 | } | |
357 | ||
358 | /* Copy the highmem portion of the initrd */ | |
359 | while (ramdisk_size) { | |
360 | slop = ramdisk_image & ~PAGE_MASK; | |
361 | clen = ramdisk_size; | |
362 | if (clen > MAX_MAP_CHUNK-slop) | |
363 | clen = MAX_MAP_CHUNK-slop; | |
364 | mapaddr = ramdisk_image & PAGE_MASK; | |
88b4c146 | 365 | p = early_memremap(mapaddr, clen+slop); |
cf8fa920 | 366 | memcpy(q, p+slop, clen); |
beacfaac | 367 | early_iounmap(p, clen+slop); |
cf8fa920 PA |
368 | q += clen; |
369 | ramdisk_image += clen; | |
370 | ramdisk_size -= clen; | |
371 | } | |
a4c81cf6 | 372 | /* high pages is not converted by early_res_to_bootmem */ |
ba5b14cc YL |
373 | ramdisk_image = boot_params.hdr.ramdisk_image; |
374 | ramdisk_size = boot_params.hdr.ramdisk_size; | |
eb1379cb YL |
375 | printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to" |
376 | " %08llx - %08llx\n", | |
ba5b14cc YL |
377 | ramdisk_image, ramdisk_image + ramdisk_size - 1, |
378 | ramdisk_here, ramdisk_here + ramdisk_size - 1); | |
eb1379cb | 379 | } |
9a27f5c5 | 380 | |
eb1379cb YL |
381 | static void __init reserve_initrd(void) |
382 | { | |
c967da6a | 383 | /* Assume only end is not page aligned */ |
eb1379cb YL |
384 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
385 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
c967da6a | 386 | u64 ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size); |
8c5dd8f4 | 387 | u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; |
eb1379cb YL |
388 | |
389 | if (!boot_params.hdr.type_of_loader || | |
390 | !ramdisk_image || !ramdisk_size) | |
391 | return; /* No initrd provided by bootloader */ | |
392 | ||
393 | initrd_start = 0; | |
394 | ||
395 | if (ramdisk_size >= (end_of_lowmem>>1)) { | |
24aa0788 | 396 | memblock_free(ramdisk_image, ramdisk_end - ramdisk_image); |
eb1379cb YL |
397 | printk(KERN_ERR "initrd too large to handle, " |
398 | "disabling initrd\n"); | |
399 | return; | |
400 | } | |
401 | ||
402 | printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image, | |
403 | ramdisk_end); | |
404 | ||
405 | ||
406 | if (ramdisk_end <= end_of_lowmem) { | |
407 | /* All in lowmem, easy case */ | |
408 | /* | |
409 | * don't need to reserve again, already reserved early | |
410 | * in i386_start_kernel | |
411 | */ | |
412 | initrd_start = ramdisk_image + PAGE_OFFSET; | |
413 | initrd_end = initrd_start + ramdisk_size; | |
414 | return; | |
415 | } | |
416 | ||
eb1379cb | 417 | relocate_initrd(); |
8c5dd8f4 | 418 | |
24aa0788 | 419 | memblock_free(ramdisk_image, ramdisk_end - ramdisk_image); |
cf8fa920 | 420 | } |
225c37d7 | 421 | #else |
eb1379cb | 422 | static void __init reserve_initrd(void) |
225c37d7 YL |
423 | { |
424 | } | |
cf8fa920 PA |
425 | #endif /* CONFIG_BLK_DEV_INITRD */ |
426 | ||
29f784e3 | 427 | static void __init parse_setup_data(void) |
257b0fde YL |
428 | { |
429 | struct setup_data *data; | |
430 | u64 pa_data; | |
431 | ||
432 | if (boot_params.hdr.version < 0x0209) | |
433 | return; | |
434 | pa_data = boot_params.hdr.setup_data; | |
435 | while (pa_data) { | |
f1c2b357 SAS |
436 | u32 data_len, map_len; |
437 | ||
438 | map_len = max(PAGE_SIZE - (pa_data & ~PAGE_MASK), | |
439 | (u64)sizeof(struct setup_data)); | |
440 | data = early_memremap(pa_data, map_len); | |
441 | data_len = data->len + sizeof(struct setup_data); | |
442 | if (data_len > map_len) { | |
443 | early_iounmap(data, map_len); | |
444 | data = early_memremap(pa_data, data_len); | |
445 | map_len = data_len; | |
446 | } | |
447 | ||
257b0fde YL |
448 | switch (data->type) { |
449 | case SETUP_E820_EXT: | |
f1c2b357 | 450 | parse_e820_ext(data); |
257b0fde | 451 | break; |
da6b737b SAS |
452 | case SETUP_DTB: |
453 | add_dtb(pa_data); | |
257b0fde YL |
454 | break; |
455 | default: | |
456 | break; | |
457 | } | |
257b0fde | 458 | pa_data = data->next; |
f1c2b357 | 459 | early_iounmap(data, map_len); |
257b0fde YL |
460 | } |
461 | } | |
462 | ||
a0a0becd | 463 | static void __init e820_reserve_setup_data(void) |
28bb2237 YL |
464 | { |
465 | struct setup_data *data; | |
466 | u64 pa_data; | |
d9a81b44 | 467 | int found = 0; |
28bb2237 YL |
468 | |
469 | if (boot_params.hdr.version < 0x0209) | |
470 | return; | |
471 | pa_data = boot_params.hdr.setup_data; | |
472 | while (pa_data) { | |
88b4c146 | 473 | data = early_memremap(pa_data, sizeof(*data)); |
28bb2237 YL |
474 | e820_update_range(pa_data, sizeof(*data)+data->len, |
475 | E820_RAM, E820_RESERVED_KERN); | |
d9a81b44 | 476 | found = 1; |
28bb2237 YL |
477 | pa_data = data->next; |
478 | early_iounmap(data, sizeof(*data)); | |
479 | } | |
d9a81b44 YL |
480 | if (!found) |
481 | return; | |
482 | ||
28bb2237 | 483 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); |
a0a0becd | 484 | memcpy(&e820_saved, &e820, sizeof(struct e820map)); |
28bb2237 YL |
485 | printk(KERN_INFO "extended physical RAM map:\n"); |
486 | e820_print_map("reserve setup_data"); | |
487 | } | |
488 | ||
a9ce6bc1 | 489 | static void __init memblock_x86_reserve_range_setup_data(void) |
a0a0becd YL |
490 | { |
491 | struct setup_data *data; | |
492 | u64 pa_data; | |
a0a0becd YL |
493 | |
494 | if (boot_params.hdr.version < 0x0209) | |
495 | return; | |
496 | pa_data = boot_params.hdr.setup_data; | |
497 | while (pa_data) { | |
88b4c146 | 498 | data = early_memremap(pa_data, sizeof(*data)); |
24aa0788 | 499 | memblock_reserve(pa_data, sizeof(*data) + data->len); |
a0a0becd YL |
500 | pa_data = data->next; |
501 | early_iounmap(data, sizeof(*data)); | |
502 | } | |
503 | } | |
504 | ||
ccb4defa YL |
505 | /* |
506 | * --------- Crashkernel reservation ------------------------------ | |
507 | */ | |
508 | ||
509 | #ifdef CONFIG_KEXEC | |
32105f7f | 510 | |
7f8595bf PA |
511 | /* |
512 | * Keep the crash kernel below this limit. On 32 bits earlier kernels | |
513 | * would limit the kernel to the low 512 MiB due to mapping restrictions. | |
514 | * On 64 bits, kexec-tools currently limits us to 896 MiB; increase this | |
515 | * limit once kexec-tools are fixed. | |
516 | */ | |
517 | #ifdef CONFIG_X86_32 | |
518 | # define CRASH_KERNEL_ADDR_MAX (512 << 20) | |
519 | #else | |
520 | # define CRASH_KERNEL_ADDR_MAX (896 << 20) | |
521 | #endif | |
522 | ||
29f784e3 | 523 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
524 | { |
525 | unsigned long long total_mem; | |
526 | unsigned long long crash_size, crash_base; | |
527 | int ret; | |
528 | ||
09c71bfd | 529 | total_mem = memblock_phys_mem_size(); |
ccb4defa YL |
530 | |
531 | ret = parse_crashkernel(boot_command_line, total_mem, | |
532 | &crash_size, &crash_base); | |
32105f7f BW |
533 | if (ret != 0 || crash_size <= 0) |
534 | return; | |
535 | ||
536 | /* 0 means: find the address automatically */ | |
537 | if (crash_base <= 0) { | |
44280733 YL |
538 | const unsigned long long alignment = 16<<20; /* 16M */ |
539 | ||
9f4c1396 | 540 | /* |
7f8595bf | 541 | * kexec want bzImage is below CRASH_KERNEL_ADDR_MAX |
9f4c1396 YL |
542 | */ |
543 | crash_base = memblock_find_in_range(alignment, | |
7f8595bf | 544 | CRASH_KERNEL_ADDR_MAX, crash_size, alignment); |
9f4c1396 | 545 | |
1f5026a7 | 546 | if (!crash_base) { |
44280733 | 547 | pr_info("crashkernel reservation failed - No suitable area found.\n"); |
ccb4defa YL |
548 | return; |
549 | } | |
32105f7f | 550 | } else { |
44280733 YL |
551 | unsigned long long start; |
552 | ||
9f4c1396 YL |
553 | start = memblock_find_in_range(crash_base, |
554 | crash_base + crash_size, crash_size, 1<<20); | |
44280733 YL |
555 | if (start != crash_base) { |
556 | pr_info("crashkernel reservation failed - memory is in use.\n"); | |
ccb4defa YL |
557 | return; |
558 | } | |
32105f7f | 559 | } |
24aa0788 | 560 | memblock_reserve(crash_base, crash_size); |
ccb4defa | 561 | |
32105f7f BW |
562 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " |
563 | "for crashkernel (System RAM: %ldMB)\n", | |
564 | (unsigned long)(crash_size >> 20), | |
565 | (unsigned long)(crash_base >> 20), | |
566 | (unsigned long)(total_mem >> 20)); | |
ccb4defa | 567 | |
32105f7f BW |
568 | crashk_res.start = crash_base; |
569 | crashk_res.end = crash_base + crash_size - 1; | |
570 | insert_resource(&iomem_resource, &crashk_res); | |
ccb4defa YL |
571 | } |
572 | #else | |
29f784e3 | 573 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
574 | { |
575 | } | |
576 | #endif | |
577 | ||
bdba0e70 YL |
578 | static struct resource standard_io_resources[] = { |
579 | { .name = "dma1", .start = 0x00, .end = 0x1f, | |
580 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
581 | { .name = "pic1", .start = 0x20, .end = 0x21, | |
582 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
583 | { .name = "timer0", .start = 0x40, .end = 0x43, | |
584 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
585 | { .name = "timer1", .start = 0x50, .end = 0x53, | |
586 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
587 | { .name = "keyboard", .start = 0x60, .end = 0x60, | |
588 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
589 | { .name = "keyboard", .start = 0x64, .end = 0x64, | |
590 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
591 | { .name = "dma page reg", .start = 0x80, .end = 0x8f, | |
592 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
593 | { .name = "pic2", .start = 0xa0, .end = 0xa1, | |
594 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
595 | { .name = "dma2", .start = 0xc0, .end = 0xdf, | |
596 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
597 | { .name = "fpu", .start = 0xf0, .end = 0xff, | |
598 | .flags = IORESOURCE_BUSY | IORESOURCE_IO } | |
599 | }; | |
600 | ||
8fee697d | 601 | void __init reserve_standard_io_resources(void) |
bdba0e70 YL |
602 | { |
603 | int i; | |
604 | ||
605 | /* request I/O space for devices used on all i[345]86 PCs */ | |
606 | for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) | |
607 | request_resource(&ioport_resource, &standard_io_resources[i]); | |
608 | ||
609 | } | |
610 | ||
042be38e YL |
611 | static __init void reserve_ibft_region(void) |
612 | { | |
613 | unsigned long addr, size = 0; | |
614 | ||
615 | addr = find_ibft_region(&size); | |
616 | ||
617 | if (size) | |
24aa0788 | 618 | memblock_reserve(addr, size); |
042be38e YL |
619 | } |
620 | ||
9ea77bdb | 621 | static unsigned reserve_low = CONFIG_X86_RESERVE_LOW << 10; |
5649b7c3 | 622 | |
1b5576e6 YL |
623 | static void __init trim_bios_range(void) |
624 | { | |
625 | /* | |
626 | * A special case is the first 4Kb of memory; | |
627 | * This is a BIOS owned area, not kernel ram, but generally | |
628 | * not listed as such in the E820 table. | |
d0cd7425 PA |
629 | * |
630 | * This typically reserves additional memory (64KiB by default) | |
631 | * since some BIOSes are known to corrupt low memory. See the | |
9ea77bdb | 632 | * Kconfig help text for X86_RESERVE_LOW. |
1b5576e6 | 633 | */ |
9ea77bdb | 634 | e820_update_range(0, ALIGN(reserve_low, PAGE_SIZE), |
d0cd7425 PA |
635 | E820_RAM, E820_RESERVED); |
636 | ||
1b5576e6 YL |
637 | /* |
638 | * special case: Some BIOSen report the PC BIOS | |
639 | * area (640->1Mb) as ram even though it is not. | |
640 | * take them out. | |
641 | */ | |
642 | e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1); | |
643 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
644 | } | |
645 | ||
9ea77bdb PA |
646 | static int __init parse_reservelow(char *p) |
647 | { | |
648 | unsigned long long size; | |
649 | ||
650 | if (!p) | |
651 | return -EINVAL; | |
652 | ||
653 | size = memparse(p, &p); | |
654 | ||
655 | if (size < 4096) | |
656 | size = 4096; | |
657 | ||
658 | if (size > 640*1024) | |
659 | size = 640*1024; | |
660 | ||
661 | reserve_low = size; | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
666 | early_param("reservelow", parse_reservelow); | |
667 | ||
1da177e4 LT |
668 | /* |
669 | * Determine if we were loaded by an EFI loader. If so, then we have also been | |
670 | * passed the efi memmap, systab, etc., so we should use these data structures | |
671 | * for initialization. Note, the efi init code path is determined by the | |
672 | * global efi_enabled. This allows the same kernel image to be used on existing | |
673 | * systems (with a traditional BIOS) as well as on EFI systems. | |
674 | */ | |
76934ed4 YL |
675 | /* |
676 | * setup_arch - architecture-specific boot-time initializations | |
677 | * | |
678 | * Note: On x86_64, fixmaps are ready for use even before this is called. | |
679 | */ | |
680 | ||
1da177e4 LT |
681 | void __init setup_arch(char **cmdline_p) |
682 | { | |
76934ed4 | 683 | #ifdef CONFIG_X86_32 |
1da177e4 | 684 | memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); |
3b33553b | 685 | visws_early_detect(); |
b40827fa BP |
686 | |
687 | /* | |
688 | * copy kernel address range established so far and switch | |
689 | * to the proper swapper page table | |
690 | */ | |
691 | clone_pgd_range(swapper_pg_dir + KERNEL_PGD_BOUNDARY, | |
692 | initial_page_table + KERNEL_PGD_BOUNDARY, | |
693 | KERNEL_PGD_PTRS); | |
694 | ||
695 | load_cr3(swapper_pg_dir); | |
696 | __flush_tlb_all(); | |
76934ed4 YL |
697 | #else |
698 | printk(KERN_INFO "Command line: %s\n", boot_command_line); | |
699 | #endif | |
1da177e4 | 700 | |
9863c90f AK |
701 | /* |
702 | * If we have OLPC OFW, we might end up relocating the fixmap due to | |
703 | * reserve_top(), so do this before touching the ioremap area. | |
704 | */ | |
fd699c76 AS |
705 | olpc_ofw_detect(); |
706 | ||
29c84391 | 707 | early_trap_init(); |
9e882c92 | 708 | early_cpu_init(); |
1a98fd14 JF |
709 | early_ioremap_init(); |
710 | ||
fd699c76 AS |
711 | setup_olpc_ofw_pgd(); |
712 | ||
30c82645 PA |
713 | ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); |
714 | screen_info = boot_params.screen_info; | |
715 | edid_info = boot_params.edid_info; | |
76934ed4 | 716 | #ifdef CONFIG_X86_32 |
30c82645 PA |
717 | apm_info.bios = boot_params.apm_bios_info; |
718 | ist_info = boot_params.ist_info; | |
76934ed4 | 719 | if (boot_params.sys_desc_table.length != 0) { |
30c82645 PA |
720 | set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2); |
721 | machine_id = boot_params.sys_desc_table.table[0]; | |
722 | machine_submodel_id = boot_params.sys_desc_table.table[1]; | |
723 | BIOS_revision = boot_params.sys_desc_table.table[2]; | |
1da177e4 | 724 | } |
76934ed4 YL |
725 | #endif |
726 | saved_video_mode = boot_params.hdr.vid_mode; | |
30c82645 | 727 | bootloader_type = boot_params.hdr.type_of_loader; |
5031296c PA |
728 | if ((bootloader_type >> 4) == 0xe) { |
729 | bootloader_type &= 0xf; | |
730 | bootloader_type |= (boot_params.hdr.ext_loader_type+0x10) << 4; | |
731 | } | |
732 | bootloader_version = bootloader_type & 0xf; | |
733 | bootloader_version |= boot_params.hdr.ext_loader_ver << 4; | |
1da177e4 LT |
734 | |
735 | #ifdef CONFIG_BLK_DEV_RAM | |
30c82645 PA |
736 | rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK; |
737 | rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); | |
738 | rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); | |
1da177e4 | 739 | #endif |
7465252e YL |
740 | #ifdef CONFIG_EFI |
741 | if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, | |
1adbfa35 | 742 | "EL32", 4)) { |
7465252e | 743 | efi_enabled = 1; |
1adbfa35 OJ |
744 | efi_64bit = false; |
745 | } else if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, | |
746 | "EL64", 4)) { | |
747 | efi_enabled = 1; | |
748 | efi_64bit = true; | |
7465252e | 749 | } |
1adbfa35 OJ |
750 | if (efi_enabled && efi_memblock_x86_reserve_range()) |
751 | efi_enabled = 0; | |
7465252e YL |
752 | #endif |
753 | ||
42bbdb43 | 754 | x86_init.oem.arch_setup(); |
2215e69d | 755 | |
419afdf5 | 756 | iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1; |
0dbfafa5 | 757 | setup_memory_map(); |
28bb2237 | 758 | parse_setup_data(); |
a0a0becd YL |
759 | /* update the e820_saved too */ |
760 | e820_reserve_setup_data(); | |
28bb2237 | 761 | |
1da177e4 LT |
762 | copy_edd(); |
763 | ||
30c82645 | 764 | if (!boot_params.hdr.root_flags) |
1da177e4 LT |
765 | root_mountflags &= ~MS_RDONLY; |
766 | init_mm.start_code = (unsigned long) _text; | |
767 | init_mm.end_code = (unsigned long) _etext; | |
768 | init_mm.end_data = (unsigned long) _edata; | |
93dbda7c | 769 | init_mm.brk = _brk_end; |
1da177e4 LT |
770 | |
771 | code_resource.start = virt_to_phys(_text); | |
772 | code_resource.end = virt_to_phys(_etext)-1; | |
773 | data_resource.start = virt_to_phys(_etext); | |
774 | data_resource.end = virt_to_phys(_edata)-1; | |
00bf4098 BW |
775 | bss_resource.start = virt_to_phys(&__bss_start); |
776 | bss_resource.end = virt_to_phys(&__bss_stop)-1; | |
1da177e4 | 777 | |
516cbf37 TB |
778 | #ifdef CONFIG_CMDLINE_BOOL |
779 | #ifdef CONFIG_CMDLINE_OVERRIDE | |
780 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
781 | #else | |
782 | if (builtin_cmdline[0]) { | |
783 | /* append boot loader cmdline to builtin */ | |
784 | strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE); | |
785 | strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE); | |
786 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
787 | } | |
788 | #endif | |
789 | #endif | |
790 | ||
eda6da92 YL |
791 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
792 | *cmdline_p = command_line; | |
793 | ||
eda6da92 | 794 | /* |
4b0f3b81 KC |
795 | * x86_configure_nx() is called before parse_early_param() to detect |
796 | * whether hardware doesn't support NX (so that the early EHCI debug | |
797 | * console setup can safely call set_fixmap()). It may then be called | |
798 | * again from within noexec_setup() during parsing early parameters | |
799 | * to honor the respective command line option. | |
eda6da92 | 800 | */ |
4763ed4d | 801 | x86_configure_nx(); |
eda6da92 YL |
802 | |
803 | parse_early_param(); | |
804 | ||
4b0f3b81 | 805 | x86_report_nx(); |
0ad5bce7 | 806 | |
28bb2237 | 807 | /* after early param, so could get panic from serial */ |
a9ce6bc1 | 808 | memblock_x86_reserve_range_setup_data(); |
28bb2237 | 809 | |
76934ed4 | 810 | if (acpi_mps_check()) { |
3eb11edc | 811 | #ifdef CONFIG_X86_LOCAL_APIC |
76934ed4 | 812 | disable_apic = 1; |
3eb11edc | 813 | #endif |
988781dc | 814 | setup_clear_cpu_cap(X86_FEATURE_APIC); |
3c999f14 YL |
815 | } |
816 | ||
dc7c65db LT |
817 | #ifdef CONFIG_PCI |
818 | if (pci_early_dump_regs) | |
819 | early_dump_pci_devices(); | |
820 | #endif | |
821 | ||
0dbfafa5 | 822 | finish_e820_parsing(); |
1a3f239d | 823 | |
ff0c0874 BM |
824 | if (efi_enabled) |
825 | efi_init(); | |
826 | ||
2216d199 YL |
827 | dmi_scan_machine(); |
828 | ||
88b094fb AK |
829 | /* |
830 | * VMware detection requires dmi to be available, so this | |
831 | * needs to be done after dmi_scan_machine, for the BP. | |
832 | */ | |
2d826404 | 833 | init_hypervisor_platform(); |
88b094fb | 834 | |
f7cf5a5b | 835 | x86_init.resources.probe_roms(); |
41c094fd YL |
836 | |
837 | /* after parse_early_param, so could debug it */ | |
838 | insert_resource(&iomem_resource, &code_resource); | |
839 | insert_resource(&iomem_resource, &data_resource); | |
840 | insert_resource(&iomem_resource, &bss_resource); | |
841 | ||
1b5576e6 | 842 | trim_bios_range(); |
76934ed4 | 843 | #ifdef CONFIG_X86_32 |
cc9f7a0c YL |
844 | if (ppro_with_ram_bug()) { |
845 | e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM, | |
846 | E820_RESERVED); | |
847 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
848 | printk(KERN_INFO "fixed physical RAM map:\n"); | |
849 | e820_print_map("bad_ppro"); | |
850 | } | |
76934ed4 YL |
851 | #else |
852 | early_gart_iommu_check(); | |
853 | #endif | |
cc9f7a0c | 854 | |
7b2a0a6c YL |
855 | /* |
856 | * partially used pages are not usable - thus | |
857 | * we are rounding upwards: | |
858 | */ | |
f361a450 | 859 | max_pfn = e820_end_of_ram_pfn(); |
7b2a0a6c | 860 | |
093af8d7 YL |
861 | /* update e820 for memory not covered by WB MTRRs */ |
862 | mtrr_bp_init(); | |
2dc807b3 | 863 | if (mtrr_trim_uncached_memory(max_pfn)) |
f361a450 | 864 | max_pfn = e820_end_of_ram_pfn(); |
76c32418 | 865 | |
76934ed4 | 866 | #ifdef CONFIG_X86_32 |
4e29684c | 867 | /* max_low_pfn get updated here */ |
2ec65f8b | 868 | find_low_pfn_range(); |
76934ed4 YL |
869 | #else |
870 | num_physpages = max_pfn; | |
871 | ||
06cd9a7d | 872 | check_x2apic(); |
76934ed4 YL |
873 | |
874 | /* How many end-of-memory variables you have, grandma! */ | |
875 | /* need this before calling reserve_initrd */ | |
f361a450 YL |
876 | if (max_pfn > (1UL<<(32 - PAGE_SHIFT))) |
877 | max_low_pfn = e820_end_of_low_ram_pfn(); | |
878 | else | |
879 | max_low_pfn = max_pfn; | |
880 | ||
76934ed4 | 881 | high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; |
5394f80f JF |
882 | #endif |
883 | ||
893f38d1 YL |
884 | /* |
885 | * Find and reserve possible boot-time SMP configuration: | |
886 | */ | |
887 | find_smp_config(); | |
888 | ||
042be38e YL |
889 | reserve_ibft_region(); |
890 | ||
72d7c3b3 YL |
891 | /* |
892 | * Need to conclude brk, before memblock_x86_fill() | |
893 | * it could use memblock_find_in_range, could overlap with | |
894 | * brk area. | |
895 | */ | |
896 | reserve_brk(); | |
897 | ||
e5f15b45 YL |
898 | cleanup_highmap(); |
899 | ||
72d7c3b3 YL |
900 | memblock.current_limit = get_max_mapped(); |
901 | memblock_x86_fill(); | |
902 | ||
916f676f MG |
903 | /* |
904 | * The EFI specification says that boot service code won't be called | |
905 | * after ExitBootServices(). This is, in fact, a lie. | |
906 | */ | |
907 | if (efi_enabled) | |
908 | efi_reserve_boot_services(); | |
909 | ||
72d7c3b3 YL |
910 | /* preallocate 4k for mptable mpc */ |
911 | early_reserve_e820_mpc_new(); | |
912 | ||
913 | #ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION | |
914 | setup_bios_corruption_check(); | |
915 | #endif | |
916 | ||
917 | printk(KERN_DEBUG "initial memory mapped : 0 - %08lx\n", | |
918 | max_pfn_mapped<<PAGE_SHIFT); | |
919 | ||
4822b7fc | 920 | setup_trampolines(); |
893f38d1 | 921 | |
854c879f PE |
922 | init_gbpages(); |
923 | ||
4e29684c | 924 | /* max_pfn_mapped is updated here */ |
f361a450 YL |
925 | max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); |
926 | max_pfn_mapped = max_low_pfn_mapped; | |
927 | ||
f8911250 TH |
928 | #ifdef CONFIG_X86_64 |
929 | if (max_pfn > max_low_pfn) { | |
930 | max_pfn_mapped = init_memory_mapping(1UL<<32, | |
931 | max_pfn<<PAGE_SHIFT); | |
932 | /* can we preseve max_low_pfn ?*/ | |
933 | max_low_pfn = max_pfn; | |
934 | } | |
935 | #endif | |
72d7c3b3 | 936 | memblock.current_limit = get_max_mapped(); |
4e29684c | 937 | |
e7b37895 YL |
938 | /* |
939 | * NOTE: On x86-32, only from this point on, fixmaps are ready for use. | |
940 | */ | |
941 | ||
942 | #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT | |
943 | if (init_ohci1394_dma_early) | |
944 | init_ohci1394_dma_on_all_controllers(); | |
945 | #endif | |
162a7e75 MT |
946 | /* Allocate bigger log buffer */ |
947 | setup_log_buf(1); | |
e7b37895 | 948 | |
2ec65f8b YL |
949 | reserve_initrd(); |
950 | ||
44280733 YL |
951 | reserve_crashkernel(); |
952 | ||
76934ed4 | 953 | vsmp_init(); |
76934ed4 | 954 | |
1c6e5503 YL |
955 | io_delay_init(); |
956 | ||
1c6e5503 YL |
957 | /* |
958 | * Parse the ACPI tables for possible boot-time SMP configuration. | |
959 | */ | |
960 | acpi_boot_table_init(); | |
1c6e5503 | 961 | |
2e42060c JS |
962 | early_acpi_boot_init(); |
963 | ||
d8fc3afc | 964 | initmem_init(); |
6f2a7536 | 965 | memblock_find_dma_reserve(); |
91467bdf | 966 | |
790c73f6 GOC |
967 | #ifdef CONFIG_KVM_CLOCK |
968 | kvmclock_init(); | |
969 | #endif | |
970 | ||
030cb6c0 | 971 | x86_init.paging.pagetable_setup_start(swapper_pg_dir); |
1da177e4 | 972 | paging_init(); |
030cb6c0 | 973 | x86_init.paging.pagetable_setup_done(swapper_pg_dir); |
f212ec4b | 974 | |
4da9484b PA |
975 | if (boot_cpu_data.cpuid_level >= 0) { |
976 | /* A CPU has %cr4 if and only if it has CPUID */ | |
977 | mmu_cr4_features = read_cr4(); | |
978 | } | |
979 | ||
b40827fa BP |
980 | #ifdef CONFIG_X86_32 |
981 | /* sync back kernel address range */ | |
982 | clone_pgd_range(initial_page_table + KERNEL_PGD_BOUNDARY, | |
983 | swapper_pg_dir + KERNEL_PGD_BOUNDARY, | |
984 | KERNEL_PGD_PTRS); | |
985 | #endif | |
fd89a137 | 986 | |
31625340 JC |
987 | tboot_probe(); |
988 | ||
76934ed4 YL |
989 | #ifdef CONFIG_X86_64 |
990 | map_vsyscall(); | |
991 | #endif | |
992 | ||
1a3f239d | 993 | generic_apic_probe(); |
1da177e4 | 994 | |
54ef3400 | 995 | early_quirks(); |
d44647b0 | 996 | |
295deae4 YL |
997 | /* |
998 | * Read APIC and some other early information from ACPI tables. | |
999 | */ | |
1da177e4 | 1000 | acpi_boot_init(); |
efafc8b2 | 1001 | sfi_init(); |
a906fdaa | 1002 | x86_dtb_init(); |
04606618 | 1003 | |
295deae4 YL |
1004 | /* |
1005 | * get boot-time SMP configuration: | |
1006 | */ | |
e0da3364 YL |
1007 | if (smp_found_config) |
1008 | get_smp_config(); | |
76934ed4 | 1009 | |
329513a3 | 1010 | prefill_possible_map(); |
301e6190 | 1011 | |
5f4765f9 | 1012 | init_cpu_to_node(); |
5f4765f9 | 1013 | |
76934ed4 | 1014 | init_apic_mappings(); |
23f9b267 | 1015 | ioapic_and_gsi_init(); |
9d6a4d08 | 1016 | |
295deae4 | 1017 | kvm_guest_init(); |
1da177e4 | 1018 | |
41c094fd | 1019 | e820_reserve_resources(); |
bf62f398 | 1020 | e820_mark_nosave_regions(max_low_pfn); |
1da177e4 | 1021 | |
8fee697d | 1022 | x86_init.resources.reserve_resources(); |
41c094fd YL |
1023 | |
1024 | e820_setup_gap(); | |
1025 | ||
1da177e4 LT |
1026 | #ifdef CONFIG_VT |
1027 | #if defined(CONFIG_VGA_CONSOLE) | |
1028 | if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) | |
1029 | conswitchp = &vga_con; | |
1030 | #elif defined(CONFIG_DUMMY_CONSOLE) | |
1031 | conswitchp = &dummy_con; | |
1032 | #endif | |
1033 | #endif | |
6f30c1ac | 1034 | x86_init.oem.banner(); |
a2202aa2 | 1035 | |
6b617e22 FT |
1036 | x86_init.timers.wallclock_init(); |
1037 | ||
cf8ff6b6 FT |
1038 | x86_platform.wallclock_init(); |
1039 | ||
a2202aa2 | 1040 | mcheck_init(); |
f49aa448 | 1041 | |
dc326fca | 1042 | arch_init_ideal_nops(); |
1da177e4 | 1043 | } |
5649b7c3 | 1044 | |
9be1b56a IM |
1045 | #ifdef CONFIG_X86_32 |
1046 | ||
8fee697d TG |
1047 | static struct resource video_ram_resource = { |
1048 | .name = "Video RAM area", | |
1049 | .start = 0xa0000, | |
1050 | .end = 0xbffff, | |
1051 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
9be1b56a IM |
1052 | }; |
1053 | ||
8fee697d | 1054 | void __init i386_reserve_resources(void) |
9be1b56a | 1055 | { |
8fee697d TG |
1056 | request_resource(&iomem_resource, &video_ram_resource); |
1057 | reserve_standard_io_resources(); | |
9be1b56a IM |
1058 | } |
1059 | ||
9be1b56a | 1060 | #endif /* CONFIG_X86_32 */ |