Commit | Line | Data |
---|---|---|
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> | |
69 | ||
1da177e4 | 70 | #include <video/edid.h> |
1bc3b91a | 71 | |
093af8d7 | 72 | #include <asm/mtrr.h> |
9635b47d | 73 | #include <asm/apic.h> |
1da177e4 LT |
74 | #include <asm/e820.h> |
75 | #include <asm/mpspec.h> | |
76 | #include <asm/setup.h> | |
77 | #include <asm/arch_hooks.h> | |
55f26239 | 78 | #include <asm/efi.h> |
1da177e4 | 79 | #include <asm/sections.h> |
1c6e5503 | 80 | #include <asm/dmi.h> |
1da177e4 LT |
81 | #include <asm/io_apic.h> |
82 | #include <asm/ist.h> | |
7ce0bcfd | 83 | #include <asm/vmi.h> |
e75eac33 | 84 | #include <setup_arch.h> |
ce3fe6b2 | 85 | #include <asm/bios_ebda.h> |
00bf4098 | 86 | #include <asm/cacheflush.h> |
2fde61fd | 87 | #include <asm/processor.h> |
cc9f7a0c | 88 | #include <asm/bugs.h> |
1da177e4 | 89 | |
46d671b5 YL |
90 | #include <asm/system.h> |
91 | #include <asm/vsyscall.h> | |
92 | #include <asm/smp.h> | |
93 | #include <asm/desc.h> | |
94 | #include <asm/dma.h> | |
46a7fa27 | 95 | #include <asm/iommu.h> |
46d671b5 YL |
96 | #include <asm/mmu_context.h> |
97 | #include <asm/proto.h> | |
98 | ||
99 | #include <mach_apic.h> | |
46d671b5 | 100 | #include <asm/paravirt.h> |
46d671b5 YL |
101 | |
102 | #include <asm/percpu.h> | |
46d671b5 YL |
103 | #include <asm/topology.h> |
104 | #include <asm/apicdef.h> | |
55f26239 YL |
105 | #ifdef CONFIG_X86_64 |
106 | #include <asm/numa_64.h> | |
107 | #endif | |
46d671b5 | 108 | |
042623bb YL |
109 | #ifndef ARCH_SETUP |
110 | #define ARCH_SETUP | |
111 | #endif | |
112 | ||
217b8ce8 YL |
113 | #ifndef CONFIG_DEBUG_BOOT_PARAMS |
114 | struct boot_params __initdata boot_params; | |
115 | #else | |
116 | struct boot_params boot_params; | |
117 | #endif | |
118 | ||
1da177e4 LT |
119 | /* |
120 | * Machine setup.. | |
121 | */ | |
c9cce83d BW |
122 | static struct resource data_resource = { |
123 | .name = "Kernel data", | |
124 | .start = 0, | |
125 | .end = 0, | |
126 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
127 | }; | |
128 | ||
129 | static struct resource code_resource = { | |
130 | .name = "Kernel code", | |
131 | .start = 0, | |
132 | .end = 0, | |
133 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
134 | }; | |
135 | ||
136 | static struct resource bss_resource = { | |
137 | .name = "Kernel bss", | |
138 | .start = 0, | |
139 | .end = 0, | |
140 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
141 | }; | |
142 | ||
7dea23ec YL |
143 | |
144 | #ifdef CONFIG_X86_32 | |
5092301c YL |
145 | /* This value is set up by the early boot code to point to the value |
146 | immediately after the boot time page tables. It contains a *physical* | |
147 | address, and must not be in the .bss segment! */ | |
148 | unsigned long init_pg_tables_start __initdata = ~0UL; | |
149 | unsigned long init_pg_tables_end __initdata = ~0UL; | |
150 | ||
c9cce83d BW |
151 | static struct resource video_ram_resource = { |
152 | .name = "Video RAM area", | |
153 | .start = 0xa0000, | |
154 | .end = 0xbffff, | |
155 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
156 | }; | |
157 | ||
1da177e4 | 158 | /* cpu data as detected by the assembly code in head.S */ |
7dea23ec | 159 | struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
1da177e4 | 160 | /* common cpu data for all cpus */ |
7dea23ec | 161 | struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
129f6946 | 162 | EXPORT_SYMBOL(boot_cpu_data); |
7dea23ec YL |
163 | static void set_mca_bus(int x) |
164 | { | |
165 | #ifdef CONFIG_MCA | |
166 | MCA_bus = x; | |
167 | #endif | |
168 | } | |
1da177e4 | 169 | |
0c254e38 AS |
170 | unsigned int def_to_bigsmp; |
171 | ||
1da177e4 LT |
172 | /* for MCA, but anyone else can use it if they want */ |
173 | unsigned int machine_id; | |
174 | unsigned int machine_submodel_id; | |
175 | unsigned int BIOS_revision; | |
1da177e4 | 176 | |
7dea23ec YL |
177 | struct apm_info apm_info; |
178 | EXPORT_SYMBOL(apm_info); | |
179 | ||
180 | #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ | |
181 | defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) | |
182 | struct ist_info ist_info; | |
183 | EXPORT_SYMBOL(ist_info); | |
184 | #else | |
185 | struct ist_info ist_info; | |
186 | #endif | |
187 | ||
188 | #else | |
189 | struct cpuinfo_x86 boot_cpu_data __read_mostly; | |
190 | EXPORT_SYMBOL(boot_cpu_data); | |
191 | #endif | |
192 | ||
193 | ||
194 | #if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) | |
195 | unsigned long mmu_cr4_features; | |
196 | #else | |
197 | unsigned long mmu_cr4_features = X86_CR4_PAE; | |
198 | #endif | |
199 | ||
1da177e4 LT |
200 | /* Boot loader ID as an integer, for the benefit of proc_dointvec */ |
201 | int bootloader_type; | |
202 | ||
1c6e5503 YL |
203 | /* |
204 | * Early DMI memory | |
205 | */ | |
206 | int dmi_alloc_index; | |
207 | char dmi_alloc_data[DMI_MAX_DATA]; | |
208 | ||
1da177e4 LT |
209 | /* |
210 | * Setup options | |
211 | */ | |
1da177e4 | 212 | struct screen_info screen_info; |
129f6946 | 213 | EXPORT_SYMBOL(screen_info); |
1da177e4 | 214 | struct edid_info edid_info; |
5e518d76 | 215 | EXPORT_SYMBOL_GPL(edid_info); |
1da177e4 | 216 | |
1da177e4 LT |
217 | extern int root_mountflags; |
218 | ||
e44b7b75 | 219 | unsigned long saved_video_mode; |
1da177e4 | 220 | |
cf8fa920 | 221 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 222 | #define RAMDISK_PROMPT_FLAG 0x8000 |
cf8fa920 | 223 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 224 | |
4e498b66 | 225 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
516cbf37 TB |
226 | #ifdef CONFIG_CMDLINE_BOOL |
227 | static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE; | |
228 | #endif | |
1da177e4 | 229 | |
1da177e4 LT |
230 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
231 | struct edd edd; | |
232 | #ifdef CONFIG_EDD_MODULE | |
233 | EXPORT_SYMBOL(edd); | |
234 | #endif | |
235 | /** | |
236 | * copy_edd() - Copy the BIOS EDD information | |
237 | * from boot_params into a safe place. | |
238 | * | |
239 | */ | |
240 | static inline void copy_edd(void) | |
241 | { | |
30c82645 PA |
242 | memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer, |
243 | sizeof(edd.mbr_signature)); | |
244 | memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info)); | |
245 | edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries; | |
246 | edd.edd_info_nr = boot_params.eddbuf_entries; | |
1da177e4 LT |
247 | } |
248 | #else | |
249 | static inline void copy_edd(void) | |
250 | { | |
251 | } | |
252 | #endif | |
253 | ||
cf8fa920 PA |
254 | #ifdef CONFIG_BLK_DEV_INITRD |
255 | ||
eb1379cb | 256 | #ifdef CONFIG_X86_32 |
cf8fa920 | 257 | |
eb1379cb YL |
258 | #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) |
259 | static void __init relocate_initrd(void) | |
cf8fa920 | 260 | { |
eb1379cb | 261 | |
ba5b14cc YL |
262 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
263 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
ba5b14cc YL |
264 | u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT; |
265 | u64 ramdisk_here; | |
eb1379cb YL |
266 | unsigned long slop, clen, mapaddr; |
267 | char *p, *q; | |
cf8fa920 PA |
268 | |
269 | /* We need to move the initrd down into lowmem */ | |
4e29684c YL |
270 | ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size, |
271 | PAGE_SIZE); | |
cf8fa920 | 272 | |
3945e2c9 YL |
273 | if (ramdisk_here == -1ULL) |
274 | panic("Cannot find place for new RAMDISK of size %lld\n", | |
275 | ramdisk_size); | |
276 | ||
cf8fa920 PA |
277 | /* Note: this includes all the lowmem currently occupied by |
278 | the initrd, we rely on that fact to keep the data intact. */ | |
3945e2c9 | 279 | reserve_early(ramdisk_here, ramdisk_here + ramdisk_size, |
ba5b14cc | 280 | "NEW RAMDISK"); |
cf8fa920 PA |
281 | initrd_start = ramdisk_here + PAGE_OFFSET; |
282 | initrd_end = initrd_start + ramdisk_size; | |
f0d43100 YL |
283 | printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n", |
284 | ramdisk_here, ramdisk_here + ramdisk_size); | |
cf8fa920 | 285 | |
cf8fa920 PA |
286 | q = (char *)initrd_start; |
287 | ||
288 | /* Copy any lowmem portion of the initrd */ | |
289 | if (ramdisk_image < end_of_lowmem) { | |
290 | clen = end_of_lowmem - ramdisk_image; | |
291 | p = (char *)__va(ramdisk_image); | |
292 | memcpy(q, p, clen); | |
293 | q += clen; | |
294 | ramdisk_image += clen; | |
295 | ramdisk_size -= clen; | |
296 | } | |
297 | ||
298 | /* Copy the highmem portion of the initrd */ | |
299 | while (ramdisk_size) { | |
300 | slop = ramdisk_image & ~PAGE_MASK; | |
301 | clen = ramdisk_size; | |
302 | if (clen > MAX_MAP_CHUNK-slop) | |
303 | clen = MAX_MAP_CHUNK-slop; | |
304 | mapaddr = ramdisk_image & PAGE_MASK; | |
beacfaac | 305 | p = early_ioremap(mapaddr, clen+slop); |
cf8fa920 | 306 | memcpy(q, p+slop, clen); |
beacfaac | 307 | early_iounmap(p, clen+slop); |
cf8fa920 PA |
308 | q += clen; |
309 | ramdisk_image += clen; | |
310 | ramdisk_size -= clen; | |
311 | } | |
a4c81cf6 | 312 | /* high pages is not converted by early_res_to_bootmem */ |
ba5b14cc YL |
313 | ramdisk_image = boot_params.hdr.ramdisk_image; |
314 | ramdisk_size = boot_params.hdr.ramdisk_size; | |
eb1379cb YL |
315 | printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to" |
316 | " %08llx - %08llx\n", | |
ba5b14cc YL |
317 | ramdisk_image, ramdisk_image + ramdisk_size - 1, |
318 | ramdisk_here, ramdisk_here + ramdisk_size - 1); | |
eb1379cb YL |
319 | } |
320 | #endif | |
9a27f5c5 | 321 | |
eb1379cb YL |
322 | static void __init reserve_initrd(void) |
323 | { | |
324 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; | |
325 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
326 | u64 ramdisk_end = ramdisk_image + ramdisk_size; | |
327 | u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT; | |
328 | ||
329 | if (!boot_params.hdr.type_of_loader || | |
330 | !ramdisk_image || !ramdisk_size) | |
331 | return; /* No initrd provided by bootloader */ | |
332 | ||
333 | initrd_start = 0; | |
334 | ||
335 | if (ramdisk_size >= (end_of_lowmem>>1)) { | |
336 | free_early(ramdisk_image, ramdisk_end); | |
337 | printk(KERN_ERR "initrd too large to handle, " | |
338 | "disabling initrd\n"); | |
339 | return; | |
340 | } | |
341 | ||
342 | printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image, | |
343 | ramdisk_end); | |
344 | ||
345 | ||
346 | if (ramdisk_end <= end_of_lowmem) { | |
347 | /* All in lowmem, easy case */ | |
348 | /* | |
349 | * don't need to reserve again, already reserved early | |
350 | * in i386_start_kernel | |
351 | */ | |
352 | initrd_start = ramdisk_image + PAGE_OFFSET; | |
353 | initrd_end = initrd_start + ramdisk_size; | |
354 | return; | |
355 | } | |
356 | ||
357 | #ifdef CONFIG_X86_32 | |
358 | relocate_initrd(); | |
359 | #else | |
360 | printk(KERN_ERR "initrd extends beyond end of memory " | |
361 | "(0x%08llx > 0x%08llx)\ndisabling initrd\n", | |
362 | ramdisk_end, end_of_lowmem); | |
363 | initrd_start = 0; | |
364 | #endif | |
365 | free_early(ramdisk_image, ramdisk_end); | |
cf8fa920 | 366 | } |
225c37d7 | 367 | #else |
eb1379cb | 368 | static void __init reserve_initrd(void) |
225c37d7 YL |
369 | { |
370 | } | |
cf8fa920 PA |
371 | #endif /* CONFIG_BLK_DEV_INITRD */ |
372 | ||
29f784e3 | 373 | static void __init parse_setup_data(void) |
257b0fde YL |
374 | { |
375 | struct setup_data *data; | |
376 | u64 pa_data; | |
377 | ||
378 | if (boot_params.hdr.version < 0x0209) | |
379 | return; | |
380 | pa_data = boot_params.hdr.setup_data; | |
381 | while (pa_data) { | |
382 | data = early_ioremap(pa_data, PAGE_SIZE); | |
383 | switch (data->type) { | |
384 | case SETUP_E820_EXT: | |
385 | parse_e820_ext(data, pa_data); | |
386 | break; | |
387 | default: | |
388 | break; | |
389 | } | |
257b0fde YL |
390 | pa_data = data->next; |
391 | early_iounmap(data, PAGE_SIZE); | |
392 | } | |
393 | } | |
394 | ||
a0a0becd | 395 | static void __init e820_reserve_setup_data(void) |
28bb2237 YL |
396 | { |
397 | struct setup_data *data; | |
398 | u64 pa_data; | |
d9a81b44 | 399 | int found = 0; |
28bb2237 YL |
400 | |
401 | if (boot_params.hdr.version < 0x0209) | |
402 | return; | |
403 | pa_data = boot_params.hdr.setup_data; | |
404 | while (pa_data) { | |
405 | data = early_ioremap(pa_data, sizeof(*data)); | |
28bb2237 YL |
406 | e820_update_range(pa_data, sizeof(*data)+data->len, |
407 | E820_RAM, E820_RESERVED_KERN); | |
d9a81b44 | 408 | found = 1; |
28bb2237 YL |
409 | pa_data = data->next; |
410 | early_iounmap(data, sizeof(*data)); | |
411 | } | |
d9a81b44 YL |
412 | if (!found) |
413 | return; | |
414 | ||
28bb2237 | 415 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); |
a0a0becd | 416 | memcpy(&e820_saved, &e820, sizeof(struct e820map)); |
28bb2237 YL |
417 | printk(KERN_INFO "extended physical RAM map:\n"); |
418 | e820_print_map("reserve setup_data"); | |
419 | } | |
420 | ||
a0a0becd YL |
421 | static void __init reserve_early_setup_data(void) |
422 | { | |
423 | struct setup_data *data; | |
424 | u64 pa_data; | |
425 | char buf[32]; | |
426 | ||
427 | if (boot_params.hdr.version < 0x0209) | |
428 | return; | |
429 | pa_data = boot_params.hdr.setup_data; | |
430 | while (pa_data) { | |
431 | data = early_ioremap(pa_data, sizeof(*data)); | |
432 | sprintf(buf, "setup data %x", data->type); | |
433 | reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf); | |
434 | pa_data = data->next; | |
435 | early_iounmap(data, sizeof(*data)); | |
436 | } | |
437 | } | |
438 | ||
ccb4defa YL |
439 | /* |
440 | * --------- Crashkernel reservation ------------------------------ | |
441 | */ | |
442 | ||
443 | #ifdef CONFIG_KEXEC | |
32105f7f BW |
444 | |
445 | /** | |
446 | * Reserve @size bytes of crashkernel memory at any suitable offset. | |
447 | * | |
448 | * @size: Size of the crashkernel memory to reserve. | |
449 | * Returns the base address on success, and -1ULL on failure. | |
450 | */ | |
6b356022 | 451 | unsigned long long __init find_and_reserve_crashkernel(unsigned long long size) |
32105f7f BW |
452 | { |
453 | const unsigned long long alignment = 16<<20; /* 16M */ | |
454 | unsigned long long start = 0LL; | |
455 | ||
456 | while (1) { | |
457 | int ret; | |
458 | ||
459 | start = find_e820_area(start, ULONG_MAX, size, alignment); | |
460 | if (start == -1ULL) | |
461 | return start; | |
462 | ||
463 | /* try to reserve it */ | |
464 | ret = reserve_bootmem_generic(start, size, BOOTMEM_EXCLUSIVE); | |
465 | if (ret >= 0) | |
466 | return start; | |
467 | ||
468 | start += alignment; | |
469 | } | |
470 | } | |
471 | ||
ccb4defa YL |
472 | static inline unsigned long long get_total_mem(void) |
473 | { | |
474 | unsigned long long total; | |
475 | ||
476 | total = max_low_pfn - min_low_pfn; | |
477 | #ifdef CONFIG_HIGHMEM | |
478 | total += highend_pfn - highstart_pfn; | |
479 | #endif | |
480 | ||
481 | return total << PAGE_SHIFT; | |
482 | } | |
483 | ||
29f784e3 | 484 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
485 | { |
486 | unsigned long long total_mem; | |
487 | unsigned long long crash_size, crash_base; | |
488 | int ret; | |
489 | ||
490 | total_mem = get_total_mem(); | |
491 | ||
492 | ret = parse_crashkernel(boot_command_line, total_mem, | |
493 | &crash_size, &crash_base); | |
32105f7f BW |
494 | if (ret != 0 || crash_size <= 0) |
495 | return; | |
496 | ||
497 | /* 0 means: find the address automatically */ | |
498 | if (crash_base <= 0) { | |
499 | crash_base = find_and_reserve_crashkernel(crash_size); | |
500 | if (crash_base == -1ULL) { | |
501 | pr_info("crashkernel reservation failed. " | |
502 | "No suitable area found.\n"); | |
ccb4defa YL |
503 | return; |
504 | } | |
32105f7f BW |
505 | } else { |
506 | ret = reserve_bootmem_generic(crash_base, crash_size, | |
507 | BOOTMEM_EXCLUSIVE); | |
508 | if (ret < 0) { | |
509 | pr_info("crashkernel reservation failed - " | |
510 | "memory is in use\n"); | |
ccb4defa YL |
511 | return; |
512 | } | |
32105f7f | 513 | } |
ccb4defa | 514 | |
32105f7f BW |
515 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " |
516 | "for crashkernel (System RAM: %ldMB)\n", | |
517 | (unsigned long)(crash_size >> 20), | |
518 | (unsigned long)(crash_base >> 20), | |
519 | (unsigned long)(total_mem >> 20)); | |
ccb4defa | 520 | |
32105f7f BW |
521 | crashk_res.start = crash_base; |
522 | crashk_res.end = crash_base + crash_size - 1; | |
523 | insert_resource(&iomem_resource, &crashk_res); | |
ccb4defa YL |
524 | } |
525 | #else | |
29f784e3 | 526 | static void __init reserve_crashkernel(void) |
ccb4defa YL |
527 | { |
528 | } | |
529 | #endif | |
530 | ||
bdba0e70 YL |
531 | static struct resource standard_io_resources[] = { |
532 | { .name = "dma1", .start = 0x00, .end = 0x1f, | |
533 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
534 | { .name = "pic1", .start = 0x20, .end = 0x21, | |
535 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
536 | { .name = "timer0", .start = 0x40, .end = 0x43, | |
537 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
538 | { .name = "timer1", .start = 0x50, .end = 0x53, | |
539 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
540 | { .name = "keyboard", .start = 0x60, .end = 0x60, | |
541 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
542 | { .name = "keyboard", .start = 0x64, .end = 0x64, | |
543 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
544 | { .name = "dma page reg", .start = 0x80, .end = 0x8f, | |
545 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
546 | { .name = "pic2", .start = 0xa0, .end = 0xa1, | |
547 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
548 | { .name = "dma2", .start = 0xc0, .end = 0xdf, | |
549 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
550 | { .name = "fpu", .start = 0xf0, .end = 0xff, | |
551 | .flags = IORESOURCE_BUSY | IORESOURCE_IO } | |
552 | }; | |
553 | ||
29f784e3 | 554 | static void __init reserve_standard_io_resources(void) |
bdba0e70 YL |
555 | { |
556 | int i; | |
557 | ||
558 | /* request I/O space for devices used on all i[345]86 PCs */ | |
559 | for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) | |
560 | request_resource(&ioport_resource, &standard_io_resources[i]); | |
561 | ||
562 | } | |
563 | ||
0196bcbb YL |
564 | #ifdef CONFIG_PROC_VMCORE |
565 | /* elfcorehdr= specifies the location of elf core header | |
566 | * stored by the crashed kernel. This option will be passed | |
567 | * by kexec loader to the capture kernel. | |
568 | */ | |
569 | static int __init setup_elfcorehdr(char *arg) | |
570 | { | |
571 | char *end; | |
572 | if (!arg) | |
573 | return -EINVAL; | |
574 | elfcorehdr_addr = memparse(arg, &end); | |
575 | return end > arg ? 0 : -EINVAL; | |
576 | } | |
577 | early_param("elfcorehdr", setup_elfcorehdr); | |
578 | #endif | |
579 | ||
3c9cb6de YL |
580 | static struct x86_quirks default_x86_quirks __initdata; |
581 | ||
582 | struct x86_quirks *x86_quirks __initdata = &default_x86_quirks; | |
583 | ||
1da177e4 LT |
584 | /* |
585 | * Determine if we were loaded by an EFI loader. If so, then we have also been | |
586 | * passed the efi memmap, systab, etc., so we should use these data structures | |
587 | * for initialization. Note, the efi init code path is determined by the | |
588 | * global efi_enabled. This allows the same kernel image to be used on existing | |
589 | * systems (with a traditional BIOS) as well as on EFI systems. | |
590 | */ | |
76934ed4 YL |
591 | /* |
592 | * setup_arch - architecture-specific boot-time initializations | |
593 | * | |
594 | * Note: On x86_64, fixmaps are ready for use even before this is called. | |
595 | */ | |
596 | ||
1da177e4 LT |
597 | void __init setup_arch(char **cmdline_p) |
598 | { | |
76934ed4 | 599 | #ifdef CONFIG_X86_32 |
1da177e4 | 600 | memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); |
3b33553b | 601 | visws_early_detect(); |
1da177e4 | 602 | pre_setup_arch_hook(); |
76934ed4 YL |
603 | #else |
604 | printk(KERN_INFO "Command line: %s\n", boot_command_line); | |
605 | #endif | |
1da177e4 | 606 | |
9e882c92 | 607 | early_cpu_init(); |
1a98fd14 JF |
608 | early_ioremap_init(); |
609 | ||
30c82645 PA |
610 | ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); |
611 | screen_info = boot_params.screen_info; | |
612 | edid_info = boot_params.edid_info; | |
76934ed4 | 613 | #ifdef CONFIG_X86_32 |
30c82645 PA |
614 | apm_info.bios = boot_params.apm_bios_info; |
615 | ist_info = boot_params.ist_info; | |
76934ed4 | 616 | if (boot_params.sys_desc_table.length != 0) { |
30c82645 PA |
617 | set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2); |
618 | machine_id = boot_params.sys_desc_table.table[0]; | |
619 | machine_submodel_id = boot_params.sys_desc_table.table[1]; | |
620 | BIOS_revision = boot_params.sys_desc_table.table[2]; | |
1da177e4 | 621 | } |
76934ed4 YL |
622 | #endif |
623 | saved_video_mode = boot_params.hdr.vid_mode; | |
30c82645 | 624 | bootloader_type = boot_params.hdr.type_of_loader; |
1da177e4 LT |
625 | |
626 | #ifdef CONFIG_BLK_DEV_RAM | |
30c82645 PA |
627 | rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK; |
628 | rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); | |
629 | rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); | |
1da177e4 | 630 | #endif |
7465252e YL |
631 | #ifdef CONFIG_EFI |
632 | if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, | |
76934ed4 YL |
633 | #ifdef CONFIG_X86_32 |
634 | "EL32", | |
635 | #else | |
636 | "EL64", | |
637 | #endif | |
638 | 4)) { | |
7465252e YL |
639 | efi_enabled = 1; |
640 | efi_reserve_early(); | |
641 | } | |
642 | #endif | |
643 | ||
1da177e4 | 644 | ARCH_SETUP |
2215e69d | 645 | |
0dbfafa5 | 646 | setup_memory_map(); |
28bb2237 | 647 | parse_setup_data(); |
a0a0becd YL |
648 | /* update the e820_saved too */ |
649 | e820_reserve_setup_data(); | |
28bb2237 | 650 | |
1da177e4 LT |
651 | copy_edd(); |
652 | ||
30c82645 | 653 | if (!boot_params.hdr.root_flags) |
1da177e4 LT |
654 | root_mountflags &= ~MS_RDONLY; |
655 | init_mm.start_code = (unsigned long) _text; | |
656 | init_mm.end_code = (unsigned long) _etext; | |
657 | init_mm.end_data = (unsigned long) _edata; | |
76934ed4 | 658 | #ifdef CONFIG_X86_32 |
1da177e4 | 659 | init_mm.brk = init_pg_tables_end + PAGE_OFFSET; |
76934ed4 YL |
660 | #else |
661 | init_mm.brk = (unsigned long) &_end; | |
662 | #endif | |
1da177e4 LT |
663 | |
664 | code_resource.start = virt_to_phys(_text); | |
665 | code_resource.end = virt_to_phys(_etext)-1; | |
666 | data_resource.start = virt_to_phys(_etext); | |
667 | data_resource.end = virt_to_phys(_edata)-1; | |
00bf4098 BW |
668 | bss_resource.start = virt_to_phys(&__bss_start); |
669 | bss_resource.end = virt_to_phys(&__bss_stop)-1; | |
1da177e4 | 670 | |
516cbf37 TB |
671 | #ifdef CONFIG_CMDLINE_BOOL |
672 | #ifdef CONFIG_CMDLINE_OVERRIDE | |
673 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
674 | #else | |
675 | if (builtin_cmdline[0]) { | |
676 | /* append boot loader cmdline to builtin */ | |
677 | strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE); | |
678 | strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE); | |
679 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); | |
680 | } | |
681 | #endif | |
682 | #endif | |
683 | ||
9a2e5930 YL |
684 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
685 | *cmdline_p = command_line; | |
686 | ||
1a3f239d | 687 | parse_early_param(); |
1da177e4 | 688 | |
0ad5bce7 JF |
689 | #ifdef CONFIG_X86_64 |
690 | check_efer(); | |
691 | #endif | |
692 | ||
3a6ddd5f AK |
693 | #if defined(CONFIG_VMI) && defined(CONFIG_X86_32) |
694 | /* | |
695 | * Must be before kernel pagetables are setup | |
696 | * or fixmap area is touched. | |
697 | */ | |
698 | vmi_init(); | |
699 | #endif | |
700 | ||
28bb2237 | 701 | /* after early param, so could get panic from serial */ |
a0a0becd | 702 | reserve_early_setup_data(); |
28bb2237 | 703 | |
76934ed4 | 704 | if (acpi_mps_check()) { |
3eb11edc | 705 | #ifdef CONFIG_X86_LOCAL_APIC |
76934ed4 | 706 | disable_apic = 1; |
3eb11edc | 707 | #endif |
988781dc | 708 | setup_clear_cpu_cap(X86_FEATURE_APIC); |
3c999f14 YL |
709 | } |
710 | ||
dc7c65db LT |
711 | #ifdef CONFIG_PCI |
712 | if (pci_early_dump_regs) | |
713 | early_dump_pci_devices(); | |
714 | #endif | |
715 | ||
0dbfafa5 | 716 | finish_e820_parsing(); |
1a3f239d | 717 | |
76934ed4 | 718 | #ifdef CONFIG_X86_32 |
41c094fd | 719 | probe_roms(); |
76934ed4 | 720 | #endif |
41c094fd YL |
721 | |
722 | /* after parse_early_param, so could debug it */ | |
723 | insert_resource(&iomem_resource, &code_resource); | |
724 | insert_resource(&iomem_resource, &data_resource); | |
725 | insert_resource(&iomem_resource, &bss_resource); | |
726 | ||
8b2cb7a8 HY |
727 | if (efi_enabled) |
728 | efi_init(); | |
729 | ||
76934ed4 | 730 | #ifdef CONFIG_X86_32 |
cc9f7a0c YL |
731 | if (ppro_with_ram_bug()) { |
732 | e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM, | |
733 | E820_RESERVED); | |
734 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
735 | printk(KERN_INFO "fixed physical RAM map:\n"); | |
736 | e820_print_map("bad_ppro"); | |
737 | } | |
76934ed4 YL |
738 | #else |
739 | early_gart_iommu_check(); | |
740 | #endif | |
cc9f7a0c | 741 | |
7b2a0a6c YL |
742 | /* |
743 | * partially used pages are not usable - thus | |
744 | * we are rounding upwards: | |
745 | */ | |
f361a450 | 746 | max_pfn = e820_end_of_ram_pfn(); |
7b2a0a6c | 747 | |
6780711e YL |
748 | /* preallocate 4k for mptable mpc */ |
749 | early_reserve_e820_mpc_new(); | |
093af8d7 YL |
750 | /* update e820 for memory not covered by WB MTRRs */ |
751 | mtrr_bp_init(); | |
2dc807b3 | 752 | if (mtrr_trim_uncached_memory(max_pfn)) |
f361a450 | 753 | max_pfn = e820_end_of_ram_pfn(); |
76c32418 | 754 | |
76934ed4 | 755 | #ifdef CONFIG_X86_32 |
4e29684c | 756 | /* max_low_pfn get updated here */ |
2ec65f8b | 757 | find_low_pfn_range(); |
76934ed4 YL |
758 | #else |
759 | num_physpages = max_pfn; | |
760 | ||
6e1cb38a SS |
761 | if (cpu_has_x2apic) |
762 | check_x2apic(); | |
76934ed4 YL |
763 | |
764 | /* How many end-of-memory variables you have, grandma! */ | |
765 | /* need this before calling reserve_initrd */ | |
f361a450 YL |
766 | if (max_pfn > (1UL<<(32 - PAGE_SHIFT))) |
767 | max_low_pfn = e820_end_of_low_ram_pfn(); | |
768 | else | |
769 | max_low_pfn = max_pfn; | |
770 | ||
76934ed4 YL |
771 | high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; |
772 | #endif | |
2ec65f8b | 773 | |
4e29684c | 774 | /* max_pfn_mapped is updated here */ |
f361a450 YL |
775 | max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); |
776 | max_pfn_mapped = max_low_pfn_mapped; | |
777 | ||
778 | #ifdef CONFIG_X86_64 | |
779 | if (max_pfn > max_low_pfn) { | |
780 | max_pfn_mapped = init_memory_mapping(1UL<<32, | |
781 | max_pfn<<PAGE_SHIFT); | |
782 | /* can we preseve max_low_pfn ?*/ | |
783 | max_low_pfn = max_pfn; | |
784 | } | |
785 | #endif | |
4e29684c | 786 | |
e7b37895 YL |
787 | /* |
788 | * NOTE: On x86-32, only from this point on, fixmaps are ready for use. | |
789 | */ | |
790 | ||
791 | #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT | |
792 | if (init_ohci1394_dma_early) | |
793 | init_ohci1394_dma_on_all_controllers(); | |
794 | #endif | |
795 | ||
2ec65f8b YL |
796 | reserve_initrd(); |
797 | ||
76934ed4 YL |
798 | #ifdef CONFIG_X86_64 |
799 | vsmp_init(); | |
800 | #endif | |
801 | ||
1c6e5503 YL |
802 | dmi_scan_machine(); |
803 | ||
804 | io_delay_init(); | |
805 | ||
1c6e5503 YL |
806 | /* |
807 | * Parse the ACPI tables for possible boot-time SMP configuration. | |
808 | */ | |
809 | acpi_boot_table_init(); | |
1c6e5503 YL |
810 | |
811 | #ifdef CONFIG_ACPI_NUMA | |
f2f865fe YL |
812 | /* |
813 | * Parse SRAT to discover nodes. | |
814 | */ | |
815 | acpi_numa_init(); | |
1c6e5503 YL |
816 | #endif |
817 | ||
2ec65f8b | 818 | initmem_init(0, max_pfn); |
093af8d7 | 819 | |
593a0cc3 YL |
820 | #ifdef CONFIG_ACPI_SLEEP |
821 | /* | |
822 | * Reserve low memory region for sleep support. | |
823 | */ | |
824 | acpi_reserve_bootmem(); | |
825 | #endif | |
d1b20afe | 826 | #ifdef CONFIG_X86_FIND_SMP_CONFIG |
593a0cc3 YL |
827 | /* |
828 | * Find and reserve possible boot-time SMP configuration: | |
829 | */ | |
830 | find_smp_config(); | |
831 | #endif | |
832 | reserve_crashkernel(); | |
833 | ||
91467bdf BW |
834 | #ifdef CONFIG_X86_64 |
835 | /* | |
836 | * dma32_reserve_bootmem() allocates bootmem which may conflict | |
837 | * with the crashkernel command line, so do that after | |
838 | * reserve_crashkernel() | |
839 | */ | |
840 | dma32_reserve_bootmem(); | |
841 | #endif | |
842 | ||
593a0cc3 YL |
843 | reserve_ibft_region(); |
844 | ||
790c73f6 GOC |
845 | #ifdef CONFIG_KVM_CLOCK |
846 | kvmclock_init(); | |
847 | #endif | |
848 | ||
a312b37b | 849 | paravirt_pagetable_setup_start(swapper_pg_dir); |
1da177e4 | 850 | paging_init(); |
a312b37b | 851 | paravirt_pagetable_setup_done(swapper_pg_dir); |
c1f2f09e | 852 | paravirt_post_allocator_init(); |
f212ec4b | 853 | |
76934ed4 YL |
854 | #ifdef CONFIG_X86_64 |
855 | map_vsyscall(); | |
856 | #endif | |
857 | ||
1da177e4 | 858 | #ifdef CONFIG_X86_GENERICARCH |
1a3f239d | 859 | generic_apic_probe(); |
cf8fa920 | 860 | #endif |
1da177e4 | 861 | |
54ef3400 | 862 | early_quirks(); |
d44647b0 | 863 | |
295deae4 YL |
864 | /* |
865 | * Read APIC and some other early information from ACPI tables. | |
866 | */ | |
1da177e4 | 867 | acpi_boot_init(); |
04606618 | 868 | |
e0da3364 | 869 | #if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS) |
295deae4 YL |
870 | /* |
871 | * get boot-time SMP configuration: | |
872 | */ | |
e0da3364 YL |
873 | if (smp_found_config) |
874 | get_smp_config(); | |
875 | #endif | |
76934ed4 | 876 | |
329513a3 | 877 | prefill_possible_map(); |
5f4765f9 YL |
878 | #ifdef CONFIG_X86_64 |
879 | init_cpu_to_node(); | |
880 | #endif | |
881 | ||
76934ed4 YL |
882 | init_apic_mappings(); |
883 | ioapic_init_mappings(); | |
f3294a33 | 884 | |
295deae4 | 885 | kvm_guest_init(); |
1da177e4 | 886 | |
41c094fd | 887 | e820_reserve_resources(); |
bf62f398 | 888 | e820_mark_nosave_regions(max_low_pfn); |
1da177e4 | 889 | |
76934ed4 | 890 | #ifdef CONFIG_X86_32 |
41c094fd | 891 | request_resource(&iomem_resource, &video_ram_resource); |
76934ed4 | 892 | #endif |
ce97c40e | 893 | reserve_standard_io_resources(); |
41c094fd YL |
894 | |
895 | e820_setup_gap(); | |
896 | ||
1da177e4 LT |
897 | #ifdef CONFIG_VT |
898 | #if defined(CONFIG_VGA_CONSOLE) | |
899 | if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) | |
900 | conswitchp = &vga_con; | |
901 | #elif defined(CONFIG_DUMMY_CONSOLE) | |
902 | conswitchp = &dummy_con; | |
903 | #endif | |
904 | #endif | |
905 | } |