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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> | |
30 | #include <linux/apm_bios.h> | |
31 | #include <linux/initrd.h> | |
32 | #include <linux/bootmem.h> | |
33 | #include <linux/seq_file.h> | |
34 | #include <linux/console.h> | |
35 | #include <linux/mca.h> | |
36 | #include <linux/root_dev.h> | |
37 | #include <linux/highmem.h> | |
38 | #include <linux/module.h> | |
39 | #include <linux/efi.h> | |
40 | #include <linux/init.h> | |
41 | #include <linux/edd.h> | |
138fe4e0 | 42 | #include <linux/iscsi_ibft.h> |
1da177e4 | 43 | #include <linux/nodemask.h> |
1bc3b91a | 44 | #include <linux/kexec.h> |
e9928674 | 45 | #include <linux/dmi.h> |
22a9835c | 46 | #include <linux/pfn.h> |
376ff035 | 47 | #include <linux/pci.h> |
46d671b5 | 48 | #include <asm/pci-direct.h> |
f212ec4b | 49 | #include <linux/init_ohci1394_dma.h> |
790c73f6 | 50 | #include <linux/kvm_para.h> |
1bc3b91a | 51 | |
46d671b5 YL |
52 | #include <linux/errno.h> |
53 | #include <linux/kernel.h> | |
54 | #include <linux/stddef.h> | |
55 | #include <linux/unistd.h> | |
56 | #include <linux/ptrace.h> | |
57 | #include <linux/slab.h> | |
58 | #include <linux/user.h> | |
59 | #include <linux/delay.h> | |
60 | #include <linux/highmem.h> | |
61 | ||
62 | #include <linux/kallsyms.h> | |
63 | #include <linux/edd.h> | |
64 | #include <linux/iscsi_ibft.h> | |
65 | #include <linux/kexec.h> | |
66 | #include <linux/cpufreq.h> | |
67 | #include <linux/dma-mapping.h> | |
68 | #include <linux/ctype.h> | |
69 | #include <linux/uaccess.h> | |
70 | ||
71 | #include <linux/percpu.h> | |
72 | #include <linux/crash_dump.h> | |
73 | ||
1da177e4 | 74 | #include <video/edid.h> |
1bc3b91a | 75 | |
093af8d7 | 76 | #include <asm/mtrr.h> |
9635b47d | 77 | #include <asm/apic.h> |
1da177e4 LT |
78 | #include <asm/e820.h> |
79 | #include <asm/mpspec.h> | |
80 | #include <asm/setup.h> | |
81 | #include <asm/arch_hooks.h> | |
82 | #include <asm/sections.h> | |
1c6e5503 | 83 | #include <asm/dmi.h> |
1da177e4 LT |
84 | #include <asm/io_apic.h> |
85 | #include <asm/ist.h> | |
7ce0bcfd | 86 | #include <asm/vmi.h> |
e75eac33 | 87 | #include <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 YL |
93 | #include <asm/system.h> |
94 | #include <asm/vsyscall.h> | |
95 | #include <asm/smp.h> | |
96 | #include <asm/desc.h> | |
97 | #include <asm/dma.h> | |
98 | #include <asm/gart.h> | |
99 | #include <asm/mmu_context.h> | |
100 | #include <asm/proto.h> | |
101 | ||
102 | #include <mach_apic.h> | |
103 | #ifdef CONFIG_PARAVIRT | |
104 | #include <asm/paravirt.h> | |
105 | #else | |
106 | #define ARCH_SETUP | |
107 | #endif | |
108 | ||
109 | #include <asm/percpu.h> | |
110 | #include <asm/sections.h> | |
111 | #include <asm/topology.h> | |
112 | #include <asm/apicdef.h> | |
113 | #ifdef CONFIG_X86_32 | |
114 | #include <asm/highmem.h> | |
115 | #endif | |
116 | ||
1da177e4 LT |
117 | /* This value is set up by the early boot code to point to the value |
118 | immediately after the boot time page tables. It contains a *physical* | |
119 | address, and must not be in the .bss segment! */ | |
f0d43100 | 120 | unsigned long init_pg_tables_start __initdata = ~0UL; |
1da177e4 LT |
121 | unsigned long init_pg_tables_end __initdata = ~0UL; |
122 | ||
1da177e4 LT |
123 | /* |
124 | * Machine setup.. | |
125 | */ | |
c9cce83d BW |
126 | static struct resource data_resource = { |
127 | .name = "Kernel data", | |
128 | .start = 0, | |
129 | .end = 0, | |
130 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
131 | }; | |
132 | ||
133 | static struct resource code_resource = { | |
134 | .name = "Kernel code", | |
135 | .start = 0, | |
136 | .end = 0, | |
137 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
138 | }; | |
139 | ||
140 | static struct resource bss_resource = { | |
141 | .name = "Kernel bss", | |
142 | .start = 0, | |
143 | .end = 0, | |
144 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
145 | }; | |
146 | ||
7dea23ec YL |
147 | |
148 | #ifdef CONFIG_X86_32 | |
c9cce83d BW |
149 | static struct resource video_ram_resource = { |
150 | .name = "Video RAM area", | |
151 | .start = 0xa0000, | |
152 | .end = 0xbffff, | |
153 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
154 | }; | |
155 | ||
1da177e4 | 156 | /* cpu data as detected by the assembly code in head.S */ |
7dea23ec | 157 | struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
1da177e4 | 158 | /* common cpu data for all cpus */ |
7dea23ec | 159 | struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
129f6946 | 160 | EXPORT_SYMBOL(boot_cpu_data); |
7dea23ec YL |
161 | static void set_mca_bus(int x) |
162 | { | |
163 | #ifdef CONFIG_MCA | |
164 | MCA_bus = x; | |
165 | #endif | |
166 | } | |
1da177e4 | 167 | |
0c254e38 AS |
168 | unsigned int def_to_bigsmp; |
169 | ||
1da177e4 LT |
170 | /* for MCA, but anyone else can use it if they want */ |
171 | unsigned int machine_id; | |
172 | unsigned int machine_submodel_id; | |
173 | unsigned int BIOS_revision; | |
1da177e4 | 174 | |
7dea23ec YL |
175 | struct apm_info apm_info; |
176 | EXPORT_SYMBOL(apm_info); | |
177 | ||
178 | #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ | |
179 | defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) | |
180 | struct ist_info ist_info; | |
181 | EXPORT_SYMBOL(ist_info); | |
182 | #else | |
183 | struct ist_info ist_info; | |
184 | #endif | |
185 | ||
186 | #else | |
187 | struct cpuinfo_x86 boot_cpu_data __read_mostly; | |
188 | EXPORT_SYMBOL(boot_cpu_data); | |
189 | #endif | |
190 | ||
191 | ||
192 | #if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) | |
193 | unsigned long mmu_cr4_features; | |
194 | #else | |
195 | unsigned long mmu_cr4_features = X86_CR4_PAE; | |
196 | #endif | |
197 | ||
1da177e4 LT |
198 | /* Boot loader ID as an integer, for the benefit of proc_dointvec */ |
199 | int bootloader_type; | |
200 | ||
1c6e5503 YL |
201 | /* |
202 | * Early DMI memory | |
203 | */ | |
204 | int dmi_alloc_index; | |
205 | char dmi_alloc_data[DMI_MAX_DATA]; | |
206 | ||
1da177e4 LT |
207 | /* |
208 | * Setup options | |
209 | */ | |
1da177e4 | 210 | struct screen_info screen_info; |
129f6946 | 211 | EXPORT_SYMBOL(screen_info); |
1da177e4 | 212 | struct edid_info edid_info; |
5e518d76 | 213 | EXPORT_SYMBOL_GPL(edid_info); |
1da177e4 | 214 | |
1da177e4 LT |
215 | extern int root_mountflags; |
216 | ||
e44b7b75 | 217 | unsigned long saved_video_mode; |
1da177e4 | 218 | |
cf8fa920 | 219 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 220 | #define RAMDISK_PROMPT_FLAG 0x8000 |
cf8fa920 | 221 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 222 | |
4e498b66 | 223 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
1da177e4 | 224 | |
1da177e4 LT |
225 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
226 | struct edd edd; | |
227 | #ifdef CONFIG_EDD_MODULE | |
228 | EXPORT_SYMBOL(edd); | |
229 | #endif | |
230 | /** | |
231 | * copy_edd() - Copy the BIOS EDD information | |
232 | * from boot_params into a safe place. | |
233 | * | |
234 | */ | |
235 | static inline void copy_edd(void) | |
236 | { | |
30c82645 PA |
237 | memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer, |
238 | sizeof(edd.mbr_signature)); | |
239 | memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info)); | |
240 | edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries; | |
241 | edd.edd_info_nr = boot_params.eddbuf_entries; | |
1da177e4 LT |
242 | } |
243 | #else | |
244 | static inline void copy_edd(void) | |
245 | { | |
246 | } | |
247 | #endif | |
248 | ||
cf8fa920 PA |
249 | #ifdef CONFIG_BLK_DEV_INITRD |
250 | ||
eb1379cb | 251 | #ifdef CONFIG_X86_32 |
cf8fa920 | 252 | |
eb1379cb YL |
253 | #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) |
254 | static void __init relocate_initrd(void) | |
cf8fa920 | 255 | { |
eb1379cb | 256 | |
ba5b14cc YL |
257 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
258 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
ba5b14cc YL |
259 | u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT; |
260 | u64 ramdisk_here; | |
eb1379cb YL |
261 | unsigned long slop, clen, mapaddr; |
262 | char *p, *q; | |
cf8fa920 PA |
263 | |
264 | /* We need to move the initrd down into lowmem */ | |
4e29684c YL |
265 | ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size, |
266 | PAGE_SIZE); | |
cf8fa920 | 267 | |
3945e2c9 YL |
268 | if (ramdisk_here == -1ULL) |
269 | panic("Cannot find place for new RAMDISK of size %lld\n", | |
270 | ramdisk_size); | |
271 | ||
cf8fa920 PA |
272 | /* Note: this includes all the lowmem currently occupied by |
273 | the initrd, we rely on that fact to keep the data intact. */ | |
3945e2c9 | 274 | reserve_early(ramdisk_here, ramdisk_here + ramdisk_size, |
ba5b14cc | 275 | "NEW RAMDISK"); |
cf8fa920 PA |
276 | initrd_start = ramdisk_here + PAGE_OFFSET; |
277 | initrd_end = initrd_start + ramdisk_size; | |
f0d43100 YL |
278 | printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n", |
279 | ramdisk_here, ramdisk_here + ramdisk_size); | |
cf8fa920 | 280 | |
cf8fa920 PA |
281 | q = (char *)initrd_start; |
282 | ||
283 | /* Copy any lowmem portion of the initrd */ | |
284 | if (ramdisk_image < end_of_lowmem) { | |
285 | clen = end_of_lowmem - ramdisk_image; | |
286 | p = (char *)__va(ramdisk_image); | |
287 | memcpy(q, p, clen); | |
288 | q += clen; | |
289 | ramdisk_image += clen; | |
290 | ramdisk_size -= clen; | |
291 | } | |
292 | ||
293 | /* Copy the highmem portion of the initrd */ | |
294 | while (ramdisk_size) { | |
295 | slop = ramdisk_image & ~PAGE_MASK; | |
296 | clen = ramdisk_size; | |
297 | if (clen > MAX_MAP_CHUNK-slop) | |
298 | clen = MAX_MAP_CHUNK-slop; | |
299 | mapaddr = ramdisk_image & PAGE_MASK; | |
beacfaac | 300 | p = early_ioremap(mapaddr, clen+slop); |
cf8fa920 | 301 | memcpy(q, p+slop, clen); |
beacfaac | 302 | early_iounmap(p, clen+slop); |
cf8fa920 PA |
303 | q += clen; |
304 | ramdisk_image += clen; | |
305 | ramdisk_size -= clen; | |
306 | } | |
a4c81cf6 | 307 | /* high pages is not converted by early_res_to_bootmem */ |
ba5b14cc YL |
308 | ramdisk_image = boot_params.hdr.ramdisk_image; |
309 | ramdisk_size = boot_params.hdr.ramdisk_size; | |
eb1379cb YL |
310 | printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to" |
311 | " %08llx - %08llx\n", | |
ba5b14cc YL |
312 | ramdisk_image, ramdisk_image + ramdisk_size - 1, |
313 | ramdisk_here, ramdisk_here + ramdisk_size - 1); | |
eb1379cb YL |
314 | } |
315 | #endif | |
9a27f5c5 | 316 | |
eb1379cb YL |
317 | static void __init reserve_initrd(void) |
318 | { | |
319 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; | |
320 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
321 | u64 ramdisk_end = ramdisk_image + ramdisk_size; | |
322 | u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT; | |
323 | ||
324 | if (!boot_params.hdr.type_of_loader || | |
325 | !ramdisk_image || !ramdisk_size) | |
326 | return; /* No initrd provided by bootloader */ | |
327 | ||
328 | initrd_start = 0; | |
329 | ||
330 | if (ramdisk_size >= (end_of_lowmem>>1)) { | |
331 | free_early(ramdisk_image, ramdisk_end); | |
332 | printk(KERN_ERR "initrd too large to handle, " | |
333 | "disabling initrd\n"); | |
334 | return; | |
335 | } | |
336 | ||
337 | printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image, | |
338 | ramdisk_end); | |
339 | ||
340 | ||
341 | if (ramdisk_end <= end_of_lowmem) { | |
342 | /* All in lowmem, easy case */ | |
343 | /* | |
344 | * don't need to reserve again, already reserved early | |
345 | * in i386_start_kernel | |
346 | */ | |
347 | initrd_start = ramdisk_image + PAGE_OFFSET; | |
348 | initrd_end = initrd_start + ramdisk_size; | |
349 | return; | |
350 | } | |
351 | ||
352 | #ifdef CONFIG_X86_32 | |
353 | relocate_initrd(); | |
354 | #else | |
355 | printk(KERN_ERR "initrd extends beyond end of memory " | |
356 | "(0x%08llx > 0x%08llx)\ndisabling initrd\n", | |
357 | ramdisk_end, end_of_lowmem); | |
358 | initrd_start = 0; | |
359 | #endif | |
360 | free_early(ramdisk_image, ramdisk_end); | |
cf8fa920 | 361 | } |
225c37d7 | 362 | #else |
eb1379cb | 363 | static void __init reserve_initrd(void) |
225c37d7 YL |
364 | { |
365 | } | |
cf8fa920 PA |
366 | #endif /* CONFIG_BLK_DEV_INITRD */ |
367 | ||
1da177e4 LT |
368 | /* |
369 | * Determine if we were loaded by an EFI loader. If so, then we have also been | |
370 | * passed the efi memmap, systab, etc., so we should use these data structures | |
371 | * for initialization. Note, the efi init code path is determined by the | |
372 | * global efi_enabled. This allows the same kernel image to be used on existing | |
373 | * systems (with a traditional BIOS) as well as on EFI systems. | |
374 | */ | |
375 | void __init setup_arch(char **cmdline_p) | |
376 | { | |
1da177e4 LT |
377 | memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); |
378 | pre_setup_arch_hook(); | |
379 | early_cpu_init(); | |
beacfaac | 380 | early_ioremap_init(); |
c45a707d | 381 | reserve_setup_data(); |
1da177e4 | 382 | |
30c82645 PA |
383 | ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); |
384 | screen_info = boot_params.screen_info; | |
385 | edid_info = boot_params.edid_info; | |
386 | apm_info.bios = boot_params.apm_bios_info; | |
387 | ist_info = boot_params.ist_info; | |
e44b7b75 | 388 | saved_video_mode = boot_params.hdr.vid_mode; |
30c82645 PA |
389 | if( boot_params.sys_desc_table.length != 0 ) { |
390 | set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2); | |
391 | machine_id = boot_params.sys_desc_table.table[0]; | |
392 | machine_submodel_id = boot_params.sys_desc_table.table[1]; | |
393 | BIOS_revision = boot_params.sys_desc_table.table[2]; | |
1da177e4 | 394 | } |
30c82645 | 395 | bootloader_type = boot_params.hdr.type_of_loader; |
1da177e4 LT |
396 | |
397 | #ifdef CONFIG_BLK_DEV_RAM | |
30c82645 PA |
398 | rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK; |
399 | rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); | |
400 | rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); | |
1da177e4 | 401 | #endif |
7465252e YL |
402 | #ifdef CONFIG_EFI |
403 | if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, | |
404 | "EL32", 4)) { | |
405 | efi_enabled = 1; | |
406 | efi_reserve_early(); | |
407 | } | |
408 | #endif | |
409 | ||
1da177e4 | 410 | ARCH_SETUP |
2215e69d | 411 | |
0dbfafa5 | 412 | setup_memory_map(); |
1da177e4 LT |
413 | copy_edd(); |
414 | ||
30c82645 | 415 | if (!boot_params.hdr.root_flags) |
1da177e4 LT |
416 | root_mountflags &= ~MS_RDONLY; |
417 | init_mm.start_code = (unsigned long) _text; | |
418 | init_mm.end_code = (unsigned long) _etext; | |
419 | init_mm.end_data = (unsigned long) _edata; | |
420 | init_mm.brk = init_pg_tables_end + PAGE_OFFSET; | |
421 | ||
422 | code_resource.start = virt_to_phys(_text); | |
423 | code_resource.end = virt_to_phys(_etext)-1; | |
424 | data_resource.start = virt_to_phys(_etext); | |
425 | data_resource.end = virt_to_phys(_edata)-1; | |
00bf4098 BW |
426 | bss_resource.start = virt_to_phys(&__bss_start); |
427 | bss_resource.end = virt_to_phys(&__bss_stop)-1; | |
1da177e4 | 428 | |
9a2e5930 YL |
429 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
430 | *cmdline_p = command_line; | |
431 | ||
c45a707d HY |
432 | parse_setup_data(); |
433 | ||
1a3f239d | 434 | parse_early_param(); |
1da177e4 | 435 | |
3c999f14 | 436 | if (acpi_mps_check()){ |
3eb11edc | 437 | #ifdef CONFIG_X86_LOCAL_APIC |
3c999f14 | 438 | enable_local_apic = -1; |
3eb11edc | 439 | #endif |
3c999f14 YL |
440 | clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC); |
441 | } | |
442 | ||
0dbfafa5 | 443 | finish_e820_parsing(); |
1a3f239d | 444 | |
41c094fd YL |
445 | probe_roms(); |
446 | ||
447 | /* after parse_early_param, so could debug it */ | |
448 | insert_resource(&iomem_resource, &code_resource); | |
449 | insert_resource(&iomem_resource, &data_resource); | |
450 | insert_resource(&iomem_resource, &bss_resource); | |
451 | ||
8b2cb7a8 HY |
452 | if (efi_enabled) |
453 | efi_init(); | |
454 | ||
cc9f7a0c YL |
455 | if (ppro_with_ram_bug()) { |
456 | e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM, | |
457 | E820_RESERVED); | |
458 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
459 | printk(KERN_INFO "fixed physical RAM map:\n"); | |
460 | e820_print_map("bad_ppro"); | |
461 | } | |
462 | ||
7b2a0a6c YL |
463 | e820_register_active_regions(0, 0, -1UL); |
464 | /* | |
465 | * partially used pages are not usable - thus | |
466 | * we are rounding upwards: | |
467 | */ | |
468 | max_pfn = e820_end_of_ram(); | |
469 | ||
6780711e YL |
470 | /* preallocate 4k for mptable mpc */ |
471 | early_reserve_e820_mpc_new(); | |
093af8d7 YL |
472 | /* update e820 for memory not covered by WB MTRRs */ |
473 | mtrr_bp_init(); | |
7b2a0a6c YL |
474 | if (mtrr_trim_uncached_memory(max_pfn)) { |
475 | remove_all_active_ranges(); | |
476 | e820_register_active_regions(0, 0, -1UL); | |
477 | max_pfn = e820_end_of_ram(); | |
478 | } | |
76c32418 | 479 | |
4e29684c | 480 | /* max_low_pfn get updated here */ |
2ec65f8b YL |
481 | find_low_pfn_range(); |
482 | ||
4e29684c | 483 | /* max_pfn_mapped is updated here */ |
b9d19f4a | 484 | max_pfn_mapped = init_memory_mapping(0, (max_low_pfn << PAGE_SHIFT)); |
4e29684c | 485 | |
2ec65f8b YL |
486 | reserve_initrd(); |
487 | ||
1c6e5503 YL |
488 | dmi_scan_machine(); |
489 | ||
490 | io_delay_init(); | |
491 | ||
1c6e5503 YL |
492 | /* |
493 | * Parse the ACPI tables for possible boot-time SMP configuration. | |
494 | */ | |
495 | acpi_boot_table_init(); | |
1c6e5503 YL |
496 | |
497 | #ifdef CONFIG_ACPI_NUMA | |
498 | /* | |
499 | * Parse SRAT to discover nodes. | |
500 | */ | |
501 | acpi_numa_init(); | |
502 | #endif | |
503 | ||
2ec65f8b | 504 | initmem_init(0, max_pfn); |
093af8d7 | 505 | |
593a0cc3 YL |
506 | #ifdef CONFIG_ACPI_SLEEP |
507 | /* | |
508 | * Reserve low memory region for sleep support. | |
509 | */ | |
510 | acpi_reserve_bootmem(); | |
511 | #endif | |
512 | #ifdef CONFIG_X86_FIND_SMP_CONFIG | |
513 | /* | |
514 | * Find and reserve possible boot-time SMP configuration: | |
515 | */ | |
516 | find_smp_config(); | |
517 | #endif | |
518 | reserve_crashkernel(); | |
519 | ||
520 | reserve_ibft_region(); | |
521 | ||
790c73f6 GOC |
522 | #ifdef CONFIG_KVM_CLOCK |
523 | kvmclock_init(); | |
524 | #endif | |
525 | ||
7ce0bcfd ZA |
526 | #ifdef CONFIG_VMI |
527 | /* | |
528 | * Must be after max_low_pfn is determined, and before kernel | |
529 | * pagetables are setup. | |
530 | */ | |
531 | vmi_init(); | |
532 | #endif | |
1da177e4 | 533 | |
1da177e4 | 534 | paging_init(); |
f212ec4b BK |
535 | |
536 | /* | |
537 | * NOTE: On x86-32, only from this point on, fixmaps are ready for use. | |
538 | */ | |
539 | ||
540 | #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT | |
541 | if (init_ohci1394_dma_early) | |
542 | init_ohci1394_dma_on_all_controllers(); | |
543 | #endif | |
544 | ||
1da177e4 | 545 | #ifdef CONFIG_X86_GENERICARCH |
1a3f239d | 546 | generic_apic_probe(); |
cf8fa920 | 547 | #endif |
1da177e4 | 548 | |
54ef3400 | 549 | early_quirks(); |
d44647b0 | 550 | |
295deae4 YL |
551 | /* |
552 | * Read APIC and some other early information from ACPI tables. | |
553 | */ | |
1da177e4 | 554 | acpi_boot_init(); |
04606618 | 555 | |
e0da3364 | 556 | #if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS) |
295deae4 YL |
557 | /* |
558 | * get boot-time SMP configuration: | |
559 | */ | |
e0da3364 YL |
560 | if (smp_found_config) |
561 | get_smp_config(); | |
562 | #endif | |
911a62d4 VP |
563 | #if defined(CONFIG_SMP) && defined(CONFIG_X86_PC) |
564 | if (def_to_bigsmp) | |
565 | printk(KERN_WARNING "More than 8 CPUs detected and " | |
566 | "CONFIG_X86_PC cannot handle it.\nUse " | |
567 | "CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n"); | |
568 | #endif | |
295deae4 | 569 | kvm_guest_init(); |
1da177e4 | 570 | |
41c094fd | 571 | e820_reserve_resources(); |
bf62f398 | 572 | e820_mark_nosave_regions(max_low_pfn); |
1da177e4 | 573 | |
41c094fd | 574 | request_resource(&iomem_resource, &video_ram_resource); |
ce97c40e | 575 | reserve_standard_io_resources(); |
41c094fd YL |
576 | |
577 | e820_setup_gap(); | |
578 | ||
1da177e4 LT |
579 | #ifdef CONFIG_VT |
580 | #if defined(CONFIG_VGA_CONSOLE) | |
581 | if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) | |
582 | conswitchp = &vga_con; | |
583 | #elif defined(CONFIG_DUMMY_CONSOLE) | |
584 | conswitchp = &dummy_con; | |
585 | #endif | |
586 | #endif | |
587 | } | |
c9cce83d | 588 |