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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> | |
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> |
1da177e4 LT |
75 | #include <asm/e820.h> |
76 | #include <asm/mpspec.h> | |
77 | #include <asm/setup.h> | |
55f26239 | 78 | #include <asm/efi.h> |
8e6dafd6 IM |
79 | #include <asm/timer.h> |
80 | #include <asm/i8259.h> | |
1da177e4 | 81 | #include <asm/sections.h> |
1c6e5503 | 82 | #include <asm/dmi.h> |
1da177e4 LT |
83 | #include <asm/io_apic.h> |
84 | #include <asm/ist.h> | |
7ce0bcfd | 85 | #include <asm/vmi.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 YL |
92 | #include <asm/system.h> |
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> |
46d671b5 YL |
104 | |
105 | #include <asm/percpu.h> | |
46d671b5 YL |
106 | #include <asm/topology.h> |
107 | #include <asm/apicdef.h> | |
55f26239 YL |
108 | #ifdef CONFIG_X86_64 |
109 | #include <asm/numa_64.h> | |
110 | #endif | |
46d671b5 | 111 | |
042623bb YL |
112 | #ifndef ARCH_SETUP |
113 | #define ARCH_SETUP | |
114 | #endif | |
115 | ||
2b72394e PE |
116 | /* |
117 | * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries. | |
118 | * The direct mapping extends to max_pfn_mapped, so that we can directly access | |
119 | * apertures, ACPI and other tables without having to play with fixmaps. | |
120 | */ | |
121 | unsigned long max_low_pfn_mapped; | |
122 | unsigned long max_pfn_mapped; | |
123 | ||
796216a5 JF |
124 | RESERVE_BRK(dmi_alloc, 65536); |
125 | ||
c0b5842a IM |
126 | unsigned int boot_cpu_id __read_mostly; |
127 | ||
93dbda7c JF |
128 | static __initdata unsigned long _brk_start = (unsigned long)__brk_base; |
129 | unsigned long _brk_end = (unsigned long)__brk_base; | |
130 | ||
c0b5842a IM |
131 | #ifdef CONFIG_X86_64 |
132 | int default_cpu_present_to_apicid(int mps_cpu) | |
133 | { | |
134 | return __default_cpu_present_to_apicid(mps_cpu); | |
135 | } | |
136 | ||
137 | int default_check_phys_apicid_present(int boot_cpu_physical_apicid) | |
138 | { | |
139 | return __default_check_phys_apicid_present(boot_cpu_physical_apicid); | |
140 | } | |
141 | #endif | |
142 | ||
217b8ce8 YL |
143 | #ifndef CONFIG_DEBUG_BOOT_PARAMS |
144 | struct boot_params __initdata boot_params; | |
145 | #else | |
146 | struct boot_params boot_params; | |
147 | #endif | |
148 | ||
1da177e4 LT |
149 | /* |
150 | * Machine setup.. | |
151 | */ | |
c9cce83d BW |
152 | static struct resource data_resource = { |
153 | .name = "Kernel data", | |
154 | .start = 0, | |
155 | .end = 0, | |
156 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
157 | }; | |
158 | ||
159 | static struct resource code_resource = { | |
160 | .name = "Kernel code", | |
161 | .start = 0, | |
162 | .end = 0, | |
163 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
164 | }; | |
165 | ||
166 | static struct resource bss_resource = { | |
167 | .name = "Kernel bss", | |
168 | .start = 0, | |
169 | .end = 0, | |
170 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
171 | }; | |
172 | ||
7dea23ec YL |
173 | |
174 | #ifdef CONFIG_X86_32 | |
c9cce83d BW |
175 | static struct resource video_ram_resource = { |
176 | .name = "Video RAM area", | |
177 | .start = 0xa0000, | |
178 | .end = 0xbffff, | |
179 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
180 | }; | |
181 | ||
1da177e4 | 182 | /* cpu data as detected by the assembly code in head.S */ |
7dea23ec | 183 | struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
1da177e4 | 184 | /* common cpu data for all cpus */ |
7dea23ec | 185 | struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
129f6946 | 186 | EXPORT_SYMBOL(boot_cpu_data); |
7dea23ec YL |
187 | static void set_mca_bus(int x) |
188 | { | |
189 | #ifdef CONFIG_MCA | |
190 | MCA_bus = x; | |
191 | #endif | |
192 | } | |
1da177e4 | 193 | |
0c254e38 AS |
194 | unsigned int def_to_bigsmp; |
195 | ||
1da177e4 LT |
196 | /* for MCA, but anyone else can use it if they want */ |
197 | unsigned int machine_id; | |
198 | unsigned int machine_submodel_id; | |
199 | unsigned int BIOS_revision; | |
1da177e4 | 200 | |
7dea23ec YL |
201 | struct apm_info apm_info; |
202 | EXPORT_SYMBOL(apm_info); | |
203 | ||
204 | #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ | |
205 | defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) | |
206 | struct ist_info ist_info; | |
207 | EXPORT_SYMBOL(ist_info); | |
208 | #else | |
209 | struct ist_info ist_info; | |
210 | #endif | |
211 | ||
212 | #else | |
ed26dbe5 JF |
213 | struct cpuinfo_x86 boot_cpu_data __read_mostly = { |
214 | .x86_phys_bits = MAX_PHYSMEM_BITS, | |
215 | }; | |
7dea23ec YL |
216 | EXPORT_SYMBOL(boot_cpu_data); |
217 | #endif | |
218 | ||
219 | ||
220 | #if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) | |
221 | unsigned long mmu_cr4_features; | |
222 | #else | |
223 | unsigned long mmu_cr4_features = X86_CR4_PAE; | |
224 | #endif | |
225 | ||
5031296c PA |
226 | /* Boot loader ID and version as integers, for the benefit of proc_dointvec */ |
227 | int bootloader_type, bootloader_version; | |
1da177e4 | 228 | |
1da177e4 LT |
229 | /* |
230 | * Setup options | |
231 | */ | |
1da177e4 | 232 | struct screen_info screen_info; |
129f6946 | 233 | EXPORT_SYMBOL(screen_info); |
1da177e4 | 234 | struct edid_info edid_info; |
5e518d76 | 235 | EXPORT_SYMBOL_GPL(edid_info); |
1da177e4 | 236 | |
1da177e4 LT |
237 | extern int root_mountflags; |
238 | ||
e44b7b75 | 239 | unsigned long saved_video_mode; |
1da177e4 | 240 | |
cf8fa920 | 241 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 242 | #define RAMDISK_PROMPT_FLAG 0x8000 |
cf8fa920 | 243 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 244 | |
4e498b66 | 245 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
516cbf37 TB |
246 | #ifdef CONFIG_CMDLINE_BOOL |
247 | static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE; | |
248 | #endif | |
1da177e4 | 249 | |
1da177e4 LT |
250 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
251 | struct edd edd; | |
252 | #ifdef CONFIG_EDD_MODULE | |
253 | EXPORT_SYMBOL(edd); | |
254 | #endif | |
255 | /** | |
256 | * copy_edd() - Copy the BIOS EDD information | |
257 | * from boot_params into a safe place. | |
258 | * | |
259 | */ | |
260 | static inline void copy_edd(void) | |
261 | { | |
30c82645 PA |
262 | memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer, |
263 | sizeof(edd.mbr_signature)); | |
264 | memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info)); | |
265 | edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries; | |
266 | edd.edd_info_nr = boot_params.eddbuf_entries; | |
1da177e4 LT |
267 | } |
268 | #else | |
269 | static inline void copy_edd(void) | |
270 | { | |
271 | } | |
272 | #endif | |
273 | ||
5368a2be PA |
274 | void * __init extend_brk(size_t size, size_t align) |
275 | { | |
276 | size_t mask = align - 1; | |
277 | void *ret; | |
278 | ||
279 | BUG_ON(_brk_start == 0); | |
280 | BUG_ON(align & mask); | |
281 | ||
282 | _brk_end = (_brk_end + mask) & ~mask; | |
283 | BUG_ON((char *)(_brk_end + size) > __brk_limit); | |
284 | ||
285 | ret = (void *)_brk_end; | |
286 | _brk_end += size; | |
287 | ||
288 | memset(ret, 0, size); | |
289 | ||
290 | return ret; | |
291 | } | |
292 | ||
854c879f PE |
293 | #ifdef CONFIG_X86_64 |
294 | static void __init init_gbpages(void) | |
295 | { | |
296 | if (direct_gbpages && cpu_has_gbpages) | |
297 | printk(KERN_INFO "Using GB pages for direct mapping\n"); | |
298 | else | |
299 | direct_gbpages = 0; | |
300 | } | |
301 | #else | |
302 | static inline void init_gbpages(void) | |
303 | { | |
304 | } | |
305 | #endif | |
306 | ||
5368a2be PA |
307 | static void __init reserve_brk(void) |
308 | { | |
309 | if (_brk_end > _brk_start) | |
310 | reserve_early(__pa(_brk_start), __pa(_brk_end), "BRK"); | |
311 | ||
312 | /* Mark brk area as locked down and no longer taking any | |
313 | new allocations */ | |
314 | _brk_start = 0; | |
315 | } | |
316 | ||
cf8fa920 PA |
317 | #ifdef CONFIG_BLK_DEV_INITRD |
318 | ||
eb1379cb YL |
319 | #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) |
320 | static void __init relocate_initrd(void) | |
cf8fa920 | 321 | { |
eb1379cb | 322 | |
ba5b14cc YL |
323 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
324 | u64 ramdisk_size = boot_params.hdr.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 */ | |
4e29684c YL |
331 | ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size, |
332 | PAGE_SIZE); | |
cf8fa920 | 333 | |
3945e2c9 YL |
334 | if (ramdisk_here == -1ULL) |
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. */ | |
3945e2c9 | 340 | reserve_early(ramdisk_here, ramdisk_here + ramdisk_size, |
ba5b14cc | 341 | "NEW RAMDISK"); |
cf8fa920 PA |
342 | initrd_start = ramdisk_here + PAGE_OFFSET; |
343 | initrd_end = initrd_start + ramdisk_size; | |
f0d43100 YL |
344 | printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n", |
345 | ramdisk_here, ramdisk_here + ramdisk_size); | |
cf8fa920 | 346 | |
cf8fa920 PA |
347 | q = (char *)initrd_start; |
348 | ||
349 | /* Copy any lowmem portion of the initrd */ | |
350 | if (ramdisk_image < end_of_lowmem) { | |
351 | clen = end_of_lowmem - ramdisk_image; | |
352 | p = (char *)__va(ramdisk_image); | |
353 | memcpy(q, p, clen); | |
354 | q += clen; | |
355 | ramdisk_image += clen; | |
356 | ramdisk_size -= clen; | |
357 | } | |
358 | ||
359 | /* Copy the highmem portion of the initrd */ | |
360 | while (ramdisk_size) { | |
361 | slop = ramdisk_image & ~PAGE_MASK; | |
362 | clen = ramdisk_size; | |
363 | if (clen > MAX_MAP_CHUNK-slop) | |
364 | clen = MAX_MAP_CHUNK-slop; | |
365 | mapaddr = ramdisk_image & PAGE_MASK; | |
88b4c146 | 366 | p = early_memremap(mapaddr, clen+slop); |
cf8fa920 | 367 | memcpy(q, p+slop, clen); |
beacfaac | 368 | early_iounmap(p, clen+slop); |
cf8fa920 PA |
369 | q += clen; |
370 | ramdisk_image += clen; | |
371 | ramdisk_size -= clen; | |
372 | } | |
a4c81cf6 | 373 | /* high pages is not converted by early_res_to_bootmem */ |
ba5b14cc YL |
374 | ramdisk_image = boot_params.hdr.ramdisk_image; |
375 | ramdisk_size = boot_params.hdr.ramdisk_size; | |
eb1379cb YL |
376 | printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to" |
377 | " %08llx - %08llx\n", | |
ba5b14cc YL |
378 | ramdisk_image, ramdisk_image + ramdisk_size - 1, |
379 | ramdisk_here, ramdisk_here + ramdisk_size - 1); | |
eb1379cb | 380 | } |
9a27f5c5 | 381 | |
eb1379cb YL |
382 | static void __init reserve_initrd(void) |
383 | { | |
384 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; | |
385 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
386 | u64 ramdisk_end = 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)) { | |
396 | free_early(ramdisk_image, ramdisk_end); | |
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 | |
eb1379cb | 419 | free_early(ramdisk_image, ramdisk_end); |
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) { | |
88b4c146 | 436 | data = early_memremap(pa_data, PAGE_SIZE); |
257b0fde YL |
437 | switch (data->type) { |
438 | case SETUP_E820_EXT: | |
439 | parse_e820_ext(data, pa_data); | |
440 | break; | |
441 | default: | |
442 | break; | |
443 | } | |
257b0fde YL |
444 | pa_data = data->next; |
445 | early_iounmap(data, PAGE_SIZE); | |
446 | } | |
447 | } | |
448 | ||
a0a0becd | 449 | static void __init e820_reserve_setup_data(void) |
28bb2237 YL |
450 | { |
451 | struct setup_data *data; | |
452 | u64 pa_data; | |
d9a81b44 | 453 | int found = 0; |
28bb2237 YL |
454 | |
455 | if (boot_params.hdr.version < 0x0209) | |
456 | return; | |
457 | pa_data = boot_params.hdr.setup_data; | |
458 | while (pa_data) { | |
88b4c146 | 459 | data = early_memremap(pa_data, sizeof(*data)); |
28bb2237 YL |
460 | e820_update_range(pa_data, sizeof(*data)+data->len, |
461 | E820_RAM, E820_RESERVED_KERN); | |
d9a81b44 | 462 | found = 1; |
28bb2237 YL |
463 | pa_data = data->next; |
464 | early_iounmap(data, sizeof(*data)); | |
465 | } | |
d9a81b44 YL |
466 | if (!found) |
467 | return; | |
468 | ||
28bb2237 | 469 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); |
a0a0becd | 470 | memcpy(&e820_saved, &e820, sizeof(struct e820map)); |
28bb2237 YL |
471 | printk(KERN_INFO "extended physical RAM map:\n"); |
472 | e820_print_map("reserve setup_data"); | |
473 | } | |
474 | ||
a0a0becd YL |
475 | static void __init reserve_early_setup_data(void) |
476 | { | |
477 | struct setup_data *data; | |
478 | u64 pa_data; | |
479 | char buf[32]; | |
480 | ||
481 | if (boot_params.hdr.version < 0x0209) | |
482 | return; | |
483 | pa_data = boot_params.hdr.setup_data; | |
484 | while (pa_data) { | |
88b4c146 | 485 | data = early_memremap(pa_data, sizeof(*data)); |
a0a0becd YL |
486 | sprintf(buf, "setup data %x", data->type); |
487 | reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf); | |
488 | pa_data = data->next; | |
489 | early_iounmap(data, sizeof(*data)); | |
490 | } | |
491 | } | |
492 | ||
ccb4defa YL |
493 | /* |
494 | * --------- Crashkernel reservation ------------------------------ | |
495 | */ | |
496 | ||
497 | #ifdef CONFIG_KEXEC | |
32105f7f BW |
498 | |
499 | /** | |
500 | * Reserve @size bytes of crashkernel memory at any suitable offset. | |
501 | * | |
502 | * @size: Size of the crashkernel memory to reserve. | |
503 | * Returns the base address on success, and -1ULL on failure. | |
504 | */ | |
a9b43c7d | 505 | static |
6b356022 | 506 | unsigned long long __init find_and_reserve_crashkernel(unsigned long long size) |
32105f7f BW |
507 | { |
508 | const unsigned long long alignment = 16<<20; /* 16M */ | |
509 | unsigned long long start = 0LL; | |
510 | ||
511 | while (1) { | |
512 | int ret; | |
513 | ||
514 | start = find_e820_area(start, ULONG_MAX, size, alignment); | |
515 | if (start == -1ULL) | |
516 | return start; | |
517 | ||
518 | /* try to reserve it */ | |
519 | ret = reserve_bootmem_generic(start, size, BOOTMEM_EXCLUSIVE); | |
520 | if (ret >= 0) | |
521 | return start; | |
522 | ||
523 | start += alignment; | |
524 | } | |
525 | } | |
526 | ||
ccb4defa YL |
527 | static inline unsigned long long get_total_mem(void) |
528 | { | |
529 | unsigned long long total; | |
530 | ||
531 | total = max_low_pfn - min_low_pfn; | |
532 | #ifdef CONFIG_HIGHMEM | |
533 | total += highend_pfn - highstart_pfn; | |
534 | #endif | |
535 | ||
536 | return total << PAGE_SHIFT; | |
537 | } | |
538 | ||
29f784e3 | 539 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
540 | { |
541 | unsigned long long total_mem; | |
542 | unsigned long long crash_size, crash_base; | |
543 | int ret; | |
544 | ||
545 | total_mem = get_total_mem(); | |
546 | ||
547 | ret = parse_crashkernel(boot_command_line, total_mem, | |
548 | &crash_size, &crash_base); | |
32105f7f BW |
549 | if (ret != 0 || crash_size <= 0) |
550 | return; | |
551 | ||
552 | /* 0 means: find the address automatically */ | |
553 | if (crash_base <= 0) { | |
554 | crash_base = find_and_reserve_crashkernel(crash_size); | |
555 | if (crash_base == -1ULL) { | |
556 | pr_info("crashkernel reservation failed. " | |
557 | "No suitable area found.\n"); | |
ccb4defa YL |
558 | return; |
559 | } | |
32105f7f BW |
560 | } else { |
561 | ret = reserve_bootmem_generic(crash_base, crash_size, | |
562 | BOOTMEM_EXCLUSIVE); | |
563 | if (ret < 0) { | |
564 | pr_info("crashkernel reservation failed - " | |
565 | "memory is in use\n"); | |
ccb4defa YL |
566 | return; |
567 | } | |
32105f7f | 568 | } |
ccb4defa | 569 | |
32105f7f BW |
570 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " |
571 | "for crashkernel (System RAM: %ldMB)\n", | |
572 | (unsigned long)(crash_size >> 20), | |
573 | (unsigned long)(crash_base >> 20), | |
574 | (unsigned long)(total_mem >> 20)); | |
ccb4defa | 575 | |
32105f7f BW |
576 | crashk_res.start = crash_base; |
577 | crashk_res.end = crash_base + crash_size - 1; | |
578 | insert_resource(&iomem_resource, &crashk_res); | |
ccb4defa YL |
579 | } |
580 | #else | |
29f784e3 | 581 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
582 | { |
583 | } | |
584 | #endif | |
585 | ||
bdba0e70 YL |
586 | static struct resource standard_io_resources[] = { |
587 | { .name = "dma1", .start = 0x00, .end = 0x1f, | |
588 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
589 | { .name = "pic1", .start = 0x20, .end = 0x21, | |
590 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
591 | { .name = "timer0", .start = 0x40, .end = 0x43, | |
592 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
593 | { .name = "timer1", .start = 0x50, .end = 0x53, | |
594 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
595 | { .name = "keyboard", .start = 0x60, .end = 0x60, | |
596 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
597 | { .name = "keyboard", .start = 0x64, .end = 0x64, | |
598 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
599 | { .name = "dma page reg", .start = 0x80, .end = 0x8f, | |
600 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
601 | { .name = "pic2", .start = 0xa0, .end = 0xa1, | |
602 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
603 | { .name = "dma2", .start = 0xc0, .end = 0xdf, | |
604 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
605 | { .name = "fpu", .start = 0xf0, .end = 0xff, | |
606 | .flags = IORESOURCE_BUSY | IORESOURCE_IO } | |
607 | }; | |
608 | ||
29f784e3 | 609 | static void __init reserve_standard_io_resources(void) |
bdba0e70 YL |
610 | { |
611 | int i; | |
612 | ||
613 | /* request I/O space for devices used on all i[345]86 PCs */ | |
614 | for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) | |
615 | request_resource(&ioport_resource, &standard_io_resources[i]); | |
616 | ||
617 | } | |
618 | ||
57cac4d1 VG |
619 | /* |
620 | * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by | |
621 | * is_kdump_kernel() to determine if we are booting after a panic. Hence | |
622 | * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. | |
623 | */ | |
624 | ||
625 | #ifdef CONFIG_CRASH_DUMP | |
0196bcbb YL |
626 | /* elfcorehdr= specifies the location of elf core header |
627 | * stored by the crashed kernel. This option will be passed | |
628 | * by kexec loader to the capture kernel. | |
629 | */ | |
630 | static int __init setup_elfcorehdr(char *arg) | |
631 | { | |
632 | char *end; | |
633 | if (!arg) | |
634 | return -EINVAL; | |
635 | elfcorehdr_addr = memparse(arg, &end); | |
636 | return end > arg ? 0 : -EINVAL; | |
637 | } | |
638 | early_param("elfcorehdr", setup_elfcorehdr); | |
639 | #endif | |
640 | ||
2b6163bf | 641 | static struct x86_quirks default_x86_quirks __initdata; |
9f077871 | 642 | |
3c9cb6de | 643 | struct x86_quirks *x86_quirks __initdata = &default_x86_quirks; |
5394f80f | 644 | |
bb557460 | 645 | #ifdef CONFIG_X86_RESERVE_LOW_64K |
5649b7c3 IM |
646 | static int __init dmi_low_memory_corruption(const struct dmi_system_id *d) |
647 | { | |
648 | printk(KERN_NOTICE | |
45608399 | 649 | "%s detected: BIOS may corrupt low RAM, working around it.\n", |
5649b7c3 IM |
650 | d->ident); |
651 | ||
2216d199 YL |
652 | e820_update_range(0, 0x10000, E820_RAM, E820_RESERVED); |
653 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
5649b7c3 IM |
654 | |
655 | return 0; | |
656 | } | |
bb557460 | 657 | #endif |
5649b7c3 IM |
658 | |
659 | /* List of systems that have known low memory corruption BIOS problems */ | |
660 | static struct dmi_system_id __initdata bad_bios_dmi_table[] = { | |
fc381519 | 661 | #ifdef CONFIG_X86_RESERVE_LOW_64K |
5649b7c3 IM |
662 | { |
663 | .callback = dmi_low_memory_corruption, | |
664 | .ident = "AMI BIOS", | |
665 | .matches = { | |
666 | DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."), | |
667 | }, | |
668 | }, | |
1e22436e IM |
669 | { |
670 | .callback = dmi_low_memory_corruption, | |
671 | .ident = "Phoenix BIOS", | |
672 | .matches = { | |
0af40a4b | 673 | DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies"), |
1e22436e IM |
674 | }, |
675 | }, | |
6aa542a6 AF |
676 | { |
677 | /* | |
678 | * AMI BIOS with low memory corruption was found on Intel DG45ID board. | |
679 | * It hase different DMI_BIOS_VENDOR = "Intel Corp.", for now we will | |
680 | * match only DMI_BOARD_NAME and see if there is more bad products | |
681 | * with this vendor. | |
682 | */ | |
683 | .callback = dmi_low_memory_corruption, | |
684 | .ident = "AMI BIOS", | |
685 | .matches = { | |
686 | DMI_MATCH(DMI_BOARD_NAME, "DG45ID"), | |
687 | }, | |
688 | }, | |
fc381519 | 689 | #endif |
a8b71a28 | 690 | {} |
5649b7c3 IM |
691 | }; |
692 | ||
1da177e4 LT |
693 | /* |
694 | * Determine if we were loaded by an EFI loader. If so, then we have also been | |
695 | * passed the efi memmap, systab, etc., so we should use these data structures | |
696 | * for initialization. Note, the efi init code path is determined by the | |
697 | * global efi_enabled. This allows the same kernel image to be used on existing | |
698 | * systems (with a traditional BIOS) as well as on EFI systems. | |
699 | */ | |
76934ed4 YL |
700 | /* |
701 | * setup_arch - architecture-specific boot-time initializations | |
702 | * | |
703 | * Note: On x86_64, fixmaps are ready for use even before this is called. | |
704 | */ | |
705 | ||
1da177e4 LT |
706 | void __init setup_arch(char **cmdline_p) |
707 | { | |
76934ed4 | 708 | #ifdef CONFIG_X86_32 |
1da177e4 | 709 | memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); |
3b33553b | 710 | visws_early_detect(); |
76934ed4 YL |
711 | #else |
712 | printk(KERN_INFO "Command line: %s\n", boot_command_line); | |
713 | #endif | |
1da177e4 | 714 | |
ae8d04e2 ZA |
715 | /* VMI may relocate the fixmap; do this before touching ioremap area */ |
716 | vmi_init(); | |
717 | ||
9e882c92 | 718 | early_cpu_init(); |
1a98fd14 JF |
719 | early_ioremap_init(); |
720 | ||
30c82645 PA |
721 | ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); |
722 | screen_info = boot_params.screen_info; | |
723 | edid_info = boot_params.edid_info; | |
76934ed4 | 724 | #ifdef CONFIG_X86_32 |
30c82645 PA |
725 | apm_info.bios = boot_params.apm_bios_info; |
726 | ist_info = boot_params.ist_info; | |
76934ed4 | 727 | if (boot_params.sys_desc_table.length != 0) { |
30c82645 PA |
728 | set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2); |
729 | machine_id = boot_params.sys_desc_table.table[0]; | |
730 | machine_submodel_id = boot_params.sys_desc_table.table[1]; | |
731 | BIOS_revision = boot_params.sys_desc_table.table[2]; | |
1da177e4 | 732 | } |
76934ed4 YL |
733 | #endif |
734 | saved_video_mode = boot_params.hdr.vid_mode; | |
30c82645 | 735 | bootloader_type = boot_params.hdr.type_of_loader; |
5031296c PA |
736 | if ((bootloader_type >> 4) == 0xe) { |
737 | bootloader_type &= 0xf; | |
738 | bootloader_type |= (boot_params.hdr.ext_loader_type+0x10) << 4; | |
739 | } | |
740 | bootloader_version = bootloader_type & 0xf; | |
741 | bootloader_version |= boot_params.hdr.ext_loader_ver << 4; | |
1da177e4 LT |
742 | |
743 | #ifdef CONFIG_BLK_DEV_RAM | |
30c82645 PA |
744 | rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK; |
745 | rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); | |
746 | rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); | |
1da177e4 | 747 | #endif |
7465252e YL |
748 | #ifdef CONFIG_EFI |
749 | if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, | |
76934ed4 YL |
750 | #ifdef CONFIG_X86_32 |
751 | "EL32", | |
752 | #else | |
753 | "EL64", | |
754 | #endif | |
755 | 4)) { | |
7465252e YL |
756 | efi_enabled = 1; |
757 | efi_reserve_early(); | |
758 | } | |
759 | #endif | |
760 | ||
1da177e4 | 761 | ARCH_SETUP |
2215e69d | 762 | |
0dbfafa5 | 763 | setup_memory_map(); |
28bb2237 | 764 | parse_setup_data(); |
a0a0becd YL |
765 | /* update the e820_saved too */ |
766 | e820_reserve_setup_data(); | |
28bb2237 | 767 | |
1da177e4 LT |
768 | copy_edd(); |
769 | ||
30c82645 | 770 | if (!boot_params.hdr.root_flags) |
1da177e4 LT |
771 | root_mountflags &= ~MS_RDONLY; |
772 | init_mm.start_code = (unsigned long) _text; | |
773 | init_mm.end_code = (unsigned long) _etext; | |
774 | init_mm.end_data = (unsigned long) _edata; | |
93dbda7c | 775 | init_mm.brk = _brk_end; |
1da177e4 LT |
776 | |
777 | code_resource.start = virt_to_phys(_text); | |
778 | code_resource.end = virt_to_phys(_etext)-1; | |
779 | data_resource.start = virt_to_phys(_etext); | |
780 | data_resource.end = virt_to_phys(_edata)-1; | |
00bf4098 BW |
781 | bss_resource.start = virt_to_phys(&__bss_start); |
782 | bss_resource.end = virt_to_phys(&__bss_stop)-1; | |
1da177e4 | 783 | |
516cbf37 TB |
784 | #ifdef CONFIG_CMDLINE_BOOL |
785 | #ifdef CONFIG_CMDLINE_OVERRIDE | |
786 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
787 | #else | |
788 | if (builtin_cmdline[0]) { | |
789 | /* append boot loader cmdline to builtin */ | |
790 | strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE); | |
791 | strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE); | |
792 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
793 | } | |
794 | #endif | |
795 | #endif | |
796 | ||
eda6da92 YL |
797 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
798 | *cmdline_p = command_line; | |
799 | ||
800 | #ifdef CONFIG_X86_64 | |
801 | /* | |
802 | * Must call this twice: Once just to detect whether hardware doesn't | |
803 | * support NX (so that the early EHCI debug console setup can safely | |
804 | * call set_fixmap(), and then again after parsing early parameters to | |
805 | * honor the respective command line option. | |
806 | */ | |
807 | check_efer(); | |
808 | #endif | |
809 | ||
810 | parse_early_param(); | |
811 | ||
0ad5bce7 JF |
812 | #ifdef CONFIG_X86_64 |
813 | check_efer(); | |
814 | #endif | |
815 | ||
ae8d04e2 ZA |
816 | /* Must be before kernel pagetables are setup */ |
817 | vmi_activate(); | |
3a6ddd5f | 818 | |
28bb2237 | 819 | /* after early param, so could get panic from serial */ |
a0a0becd | 820 | reserve_early_setup_data(); |
28bb2237 | 821 | |
76934ed4 | 822 | if (acpi_mps_check()) { |
3eb11edc | 823 | #ifdef CONFIG_X86_LOCAL_APIC |
76934ed4 | 824 | disable_apic = 1; |
3eb11edc | 825 | #endif |
988781dc | 826 | setup_clear_cpu_cap(X86_FEATURE_APIC); |
3c999f14 YL |
827 | } |
828 | ||
dc7c65db LT |
829 | #ifdef CONFIG_PCI |
830 | if (pci_early_dump_regs) | |
831 | early_dump_pci_devices(); | |
832 | #endif | |
833 | ||
0dbfafa5 | 834 | finish_e820_parsing(); |
1a3f239d | 835 | |
ff0c0874 BM |
836 | if (efi_enabled) |
837 | efi_init(); | |
838 | ||
2216d199 YL |
839 | dmi_scan_machine(); |
840 | ||
841 | dmi_check_system(bad_bios_dmi_table); | |
842 | ||
88b094fb AK |
843 | /* |
844 | * VMware detection requires dmi to be available, so this | |
845 | * needs to be done after dmi_scan_machine, for the BP. | |
846 | */ | |
847 | init_hypervisor(&boot_cpu_data); | |
848 | ||
76934ed4 | 849 | #ifdef CONFIG_X86_32 |
41c094fd | 850 | probe_roms(); |
76934ed4 | 851 | #endif |
41c094fd YL |
852 | |
853 | /* after parse_early_param, so could debug it */ | |
854 | insert_resource(&iomem_resource, &code_resource); | |
855 | insert_resource(&iomem_resource, &data_resource); | |
856 | insert_resource(&iomem_resource, &bss_resource); | |
857 | ||
8b2cb7a8 | 858 | |
76934ed4 | 859 | #ifdef CONFIG_X86_32 |
cc9f7a0c YL |
860 | if (ppro_with_ram_bug()) { |
861 | e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM, | |
862 | E820_RESERVED); | |
863 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
864 | printk(KERN_INFO "fixed physical RAM map:\n"); | |
865 | e820_print_map("bad_ppro"); | |
866 | } | |
76934ed4 YL |
867 | #else |
868 | early_gart_iommu_check(); | |
869 | #endif | |
cc9f7a0c | 870 | |
7b2a0a6c YL |
871 | /* |
872 | * partially used pages are not usable - thus | |
873 | * we are rounding upwards: | |
874 | */ | |
f361a450 | 875 | max_pfn = e820_end_of_ram_pfn(); |
7b2a0a6c | 876 | |
6780711e YL |
877 | /* preallocate 4k for mptable mpc */ |
878 | early_reserve_e820_mpc_new(); | |
093af8d7 YL |
879 | /* update e820 for memory not covered by WB MTRRs */ |
880 | mtrr_bp_init(); | |
2dc807b3 | 881 | if (mtrr_trim_uncached_memory(max_pfn)) |
f361a450 | 882 | max_pfn = e820_end_of_ram_pfn(); |
76c32418 | 883 | |
76934ed4 | 884 | #ifdef CONFIG_X86_32 |
4e29684c | 885 | /* max_low_pfn get updated here */ |
2ec65f8b | 886 | find_low_pfn_range(); |
76934ed4 YL |
887 | #else |
888 | num_physpages = max_pfn; | |
889 | ||
06cd9a7d | 890 | check_x2apic(); |
76934ed4 YL |
891 | |
892 | /* How many end-of-memory variables you have, grandma! */ | |
893 | /* need this before calling reserve_initrd */ | |
f361a450 YL |
894 | if (max_pfn > (1UL<<(32 - PAGE_SHIFT))) |
895 | max_low_pfn = e820_end_of_low_ram_pfn(); | |
896 | else | |
897 | max_low_pfn = max_pfn; | |
898 | ||
76934ed4 | 899 | high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; |
80989ce0 | 900 | max_pfn_mapped = KERNEL_IMAGE_SIZE >> PAGE_SHIFT; |
76934ed4 | 901 | #endif |
2ec65f8b | 902 | |
5394f80f JF |
903 | #ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION |
904 | setup_bios_corruption_check(); | |
905 | #endif | |
906 | ||
80989ce0 YL |
907 | printk(KERN_DEBUG "initial memory mapped : 0 - %08lx\n", |
908 | max_pfn_mapped<<PAGE_SHIFT); | |
909 | ||
93dbda7c JF |
910 | reserve_brk(); |
911 | ||
854c879f PE |
912 | init_gbpages(); |
913 | ||
4e29684c | 914 | /* max_pfn_mapped is updated here */ |
f361a450 YL |
915 | max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); |
916 | max_pfn_mapped = max_low_pfn_mapped; | |
917 | ||
918 | #ifdef CONFIG_X86_64 | |
919 | if (max_pfn > max_low_pfn) { | |
920 | max_pfn_mapped = init_memory_mapping(1UL<<32, | |
921 | max_pfn<<PAGE_SHIFT); | |
922 | /* can we preseve max_low_pfn ?*/ | |
923 | max_low_pfn = max_pfn; | |
924 | } | |
925 | #endif | |
4e29684c | 926 | |
e7b37895 YL |
927 | /* |
928 | * NOTE: On x86-32, only from this point on, fixmaps are ready for use. | |
929 | */ | |
930 | ||
931 | #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT | |
932 | if (init_ohci1394_dma_early) | |
933 | init_ohci1394_dma_on_all_controllers(); | |
934 | #endif | |
935 | ||
2ec65f8b YL |
936 | reserve_initrd(); |
937 | ||
76934ed4 | 938 | vsmp_init(); |
76934ed4 | 939 | |
1c6e5503 YL |
940 | io_delay_init(); |
941 | ||
1c6e5503 YL |
942 | /* |
943 | * Parse the ACPI tables for possible boot-time SMP configuration. | |
944 | */ | |
945 | acpi_boot_table_init(); | |
1c6e5503 | 946 | |
2e42060c JS |
947 | early_acpi_boot_init(); |
948 | ||
1c6e5503 | 949 | #ifdef CONFIG_ACPI_NUMA |
f2f865fe YL |
950 | /* |
951 | * Parse SRAT to discover nodes. | |
952 | */ | |
953 | acpi_numa_init(); | |
1c6e5503 YL |
954 | #endif |
955 | ||
2ec65f8b | 956 | initmem_init(0, max_pfn); |
093af8d7 | 957 | |
593a0cc3 YL |
958 | #ifdef CONFIG_ACPI_SLEEP |
959 | /* | |
960 | * Reserve low memory region for sleep support. | |
961 | */ | |
962 | acpi_reserve_bootmem(); | |
963 | #endif | |
593a0cc3 YL |
964 | /* |
965 | * Find and reserve possible boot-time SMP configuration: | |
966 | */ | |
967 | find_smp_config(); | |
550fe4f1 | 968 | |
593a0cc3 YL |
969 | reserve_crashkernel(); |
970 | ||
91467bdf BW |
971 | #ifdef CONFIG_X86_64 |
972 | /* | |
973 | * dma32_reserve_bootmem() allocates bootmem which may conflict | |
974 | * with the crashkernel command line, so do that after | |
975 | * reserve_crashkernel() | |
976 | */ | |
977 | dma32_reserve_bootmem(); | |
978 | #endif | |
979 | ||
593a0cc3 YL |
980 | reserve_ibft_region(); |
981 | ||
790c73f6 GOC |
982 | #ifdef CONFIG_KVM_CLOCK |
983 | kvmclock_init(); | |
984 | #endif | |
985 | ||
a312b37b | 986 | paravirt_pagetable_setup_start(swapper_pg_dir); |
1da177e4 | 987 | paging_init(); |
a312b37b | 988 | paravirt_pagetable_setup_done(swapper_pg_dir); |
c1f2f09e | 989 | paravirt_post_allocator_init(); |
f212ec4b | 990 | |
31625340 JC |
991 | tboot_probe(); |
992 | ||
76934ed4 YL |
993 | #ifdef CONFIG_X86_64 |
994 | map_vsyscall(); | |
995 | #endif | |
996 | ||
1a3f239d | 997 | generic_apic_probe(); |
1da177e4 | 998 | |
54ef3400 | 999 | early_quirks(); |
d44647b0 | 1000 | |
295deae4 YL |
1001 | /* |
1002 | * Read APIC and some other early information from ACPI tables. | |
1003 | */ | |
1da177e4 | 1004 | acpi_boot_init(); |
04606618 | 1005 | |
e0da3364 | 1006 | #if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS) |
295deae4 YL |
1007 | /* |
1008 | * get boot-time SMP configuration: | |
1009 | */ | |
e0da3364 YL |
1010 | if (smp_found_config) |
1011 | get_smp_config(); | |
1012 | #endif | |
76934ed4 | 1013 | |
329513a3 | 1014 | prefill_possible_map(); |
301e6190 | 1015 | |
5f4765f9 YL |
1016 | #ifdef CONFIG_X86_64 |
1017 | init_cpu_to_node(); | |
1018 | #endif | |
1019 | ||
76934ed4 YL |
1020 | init_apic_mappings(); |
1021 | ioapic_init_mappings(); | |
f3294a33 | 1022 | |
9d6a4d08 | 1023 | /* need to wait for io_apic is mapped */ |
be5d5350 | 1024 | probe_nr_irqs_gsi(); |
9d6a4d08 | 1025 | |
295deae4 | 1026 | kvm_guest_init(); |
1da177e4 | 1027 | |
41c094fd | 1028 | e820_reserve_resources(); |
bf62f398 | 1029 | e820_mark_nosave_regions(max_low_pfn); |
1da177e4 | 1030 | |
76934ed4 | 1031 | #ifdef CONFIG_X86_32 |
41c094fd | 1032 | request_resource(&iomem_resource, &video_ram_resource); |
76934ed4 | 1033 | #endif |
ce97c40e | 1034 | reserve_standard_io_resources(); |
41c094fd YL |
1035 | |
1036 | e820_setup_gap(); | |
1037 | ||
1da177e4 LT |
1038 | #ifdef CONFIG_VT |
1039 | #if defined(CONFIG_VGA_CONSOLE) | |
1040 | if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) | |
1041 | conswitchp = &vga_con; | |
1042 | #elif defined(CONFIG_DUMMY_CONSOLE) | |
1043 | conswitchp = &dummy_con; | |
1044 | #endif | |
1045 | #endif | |
1046 | } | |
5649b7c3 | 1047 | |
9be1b56a IM |
1048 | #ifdef CONFIG_X86_32 |
1049 | ||
9be1b56a | 1050 | /** |
8e6dafd6 | 1051 | * x86_quirk_intr_init - post gate setup interrupt initialisation |
9be1b56a IM |
1052 | * |
1053 | * Description: | |
1054 | * Fill in any interrupts that may have been left out by the general | |
1055 | * init_IRQ() routine. interrupts having to do with the machine rather | |
1056 | * than the devices on the I/O bus (like APIC interrupts in intel MP | |
1057 | * systems) are started here. | |
1058 | **/ | |
8e6dafd6 | 1059 | void __init x86_quirk_intr_init(void) |
9be1b56a IM |
1060 | { |
1061 | if (x86_quirks->arch_intr_init) { | |
1062 | if (x86_quirks->arch_intr_init()) | |
1063 | return; | |
1064 | } | |
1065 | } | |
1066 | ||
9be1b56a | 1067 | /** |
8e6dafd6 | 1068 | * x86_quirk_trap_init - initialise system specific traps |
9be1b56a IM |
1069 | * |
1070 | * Description: | |
1071 | * Called as the final act of trap_init(). Used in VISWS to initialise | |
1072 | * the various board specific APIC traps. | |
1073 | **/ | |
8e6dafd6 | 1074 | void __init x86_quirk_trap_init(void) |
9be1b56a IM |
1075 | { |
1076 | if (x86_quirks->arch_trap_init) { | |
1077 | if (x86_quirks->arch_trap_init()) | |
1078 | return; | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | static struct irqaction irq0 = { | |
1083 | .handler = timer_interrupt, | |
fc6fc7f1 | 1084 | .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER, |
9be1b56a IM |
1085 | .name = "timer" |
1086 | }; | |
1087 | ||
1088 | /** | |
8e6dafd6 | 1089 | * x86_quirk_pre_time_init - do any specific initialisations before. |
9be1b56a IM |
1090 | * |
1091 | **/ | |
8e6dafd6 | 1092 | void __init x86_quirk_pre_time_init(void) |
9be1b56a IM |
1093 | { |
1094 | if (x86_quirks->arch_pre_time_init) | |
1095 | x86_quirks->arch_pre_time_init(); | |
1096 | } | |
1097 | ||
1098 | /** | |
8e6dafd6 | 1099 | * x86_quirk_time_init - do any specific initialisations for the system timer. |
9be1b56a IM |
1100 | * |
1101 | * Description: | |
1102 | * Must plug the system timer interrupt source at HZ into the IRQ listed | |
1103 | * in irq_vectors.h:TIMER_IRQ | |
1104 | **/ | |
8e6dafd6 | 1105 | void __init x86_quirk_time_init(void) |
9be1b56a IM |
1106 | { |
1107 | if (x86_quirks->arch_time_init) { | |
1108 | /* | |
1109 | * A nonzero return code does not mean failure, it means | |
1110 | * that the architecture quirk does not want any | |
1111 | * generic (timer) setup to be performed after this: | |
1112 | */ | |
1113 | if (x86_quirks->arch_time_init()) | |
1114 | return; | |
1115 | } | |
1116 | ||
1117 | irq0.mask = cpumask_of_cpu(0); | |
1118 | setup_irq(0, &irq0); | |
1119 | } | |
9be1b56a | 1120 | #endif /* CONFIG_X86_32 */ |