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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> | |
55f26239 | 82 | #include <asm/efi.h> |
1da177e4 | 83 | #include <asm/sections.h> |
1c6e5503 | 84 | #include <asm/dmi.h> |
1da177e4 LT |
85 | #include <asm/io_apic.h> |
86 | #include <asm/ist.h> | |
7ce0bcfd | 87 | #include <asm/vmi.h> |
e75eac33 | 88 | #include <setup_arch.h> |
ce3fe6b2 | 89 | #include <asm/bios_ebda.h> |
00bf4098 | 90 | #include <asm/cacheflush.h> |
2fde61fd | 91 | #include <asm/processor.h> |
cc9f7a0c | 92 | #include <asm/bugs.h> |
1da177e4 | 93 | |
46d671b5 YL |
94 | #include <asm/system.h> |
95 | #include <asm/vsyscall.h> | |
96 | #include <asm/smp.h> | |
97 | #include <asm/desc.h> | |
98 | #include <asm/dma.h> | |
99 | #include <asm/gart.h> | |
100 | #include <asm/mmu_context.h> | |
101 | #include <asm/proto.h> | |
102 | ||
103 | #include <mach_apic.h> | |
104 | #ifdef CONFIG_PARAVIRT | |
105 | #include <asm/paravirt.h> | |
106 | #else | |
107 | #define ARCH_SETUP | |
108 | #endif | |
109 | ||
110 | #include <asm/percpu.h> | |
111 | #include <asm/sections.h> | |
112 | #include <asm/topology.h> | |
113 | #include <asm/apicdef.h> | |
55f26239 YL |
114 | #ifdef CONFIG_X86_64 |
115 | #include <asm/numa_64.h> | |
116 | #endif | |
46d671b5 YL |
117 | #ifdef CONFIG_X86_32 |
118 | #include <asm/highmem.h> | |
119 | #endif | |
120 | ||
217b8ce8 YL |
121 | #ifndef CONFIG_DEBUG_BOOT_PARAMS |
122 | struct boot_params __initdata boot_params; | |
123 | #else | |
124 | struct boot_params boot_params; | |
125 | #endif | |
126 | ||
1da177e4 LT |
127 | /* This value is set up by the early boot code to point to the value |
128 | immediately after the boot time page tables. It contains a *physical* | |
129 | address, and must not be in the .bss segment! */ | |
f0d43100 | 130 | unsigned long init_pg_tables_start __initdata = ~0UL; |
1da177e4 LT |
131 | unsigned long init_pg_tables_end __initdata = ~0UL; |
132 | ||
1da177e4 LT |
133 | /* |
134 | * Machine setup.. | |
135 | */ | |
c9cce83d BW |
136 | static struct resource data_resource = { |
137 | .name = "Kernel data", | |
138 | .start = 0, | |
139 | .end = 0, | |
140 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
141 | }; | |
142 | ||
143 | static struct resource code_resource = { | |
144 | .name = "Kernel code", | |
145 | .start = 0, | |
146 | .end = 0, | |
147 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
148 | }; | |
149 | ||
150 | static struct resource bss_resource = { | |
151 | .name = "Kernel bss", | |
152 | .start = 0, | |
153 | .end = 0, | |
154 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
155 | }; | |
156 | ||
7dea23ec YL |
157 | |
158 | #ifdef CONFIG_X86_32 | |
c9cce83d BW |
159 | static struct resource video_ram_resource = { |
160 | .name = "Video RAM area", | |
161 | .start = 0xa0000, | |
162 | .end = 0xbffff, | |
163 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
164 | }; | |
165 | ||
1da177e4 | 166 | /* cpu data as detected by the assembly code in head.S */ |
7dea23ec | 167 | struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
1da177e4 | 168 | /* common cpu data for all cpus */ |
7dea23ec | 169 | struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
129f6946 | 170 | EXPORT_SYMBOL(boot_cpu_data); |
7dea23ec YL |
171 | static void set_mca_bus(int x) |
172 | { | |
173 | #ifdef CONFIG_MCA | |
174 | MCA_bus = x; | |
175 | #endif | |
176 | } | |
1da177e4 | 177 | |
0c254e38 AS |
178 | unsigned int def_to_bigsmp; |
179 | ||
1da177e4 LT |
180 | /* for MCA, but anyone else can use it if they want */ |
181 | unsigned int machine_id; | |
182 | unsigned int machine_submodel_id; | |
183 | unsigned int BIOS_revision; | |
1da177e4 | 184 | |
7dea23ec YL |
185 | struct apm_info apm_info; |
186 | EXPORT_SYMBOL(apm_info); | |
187 | ||
188 | #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ | |
189 | defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) | |
190 | struct ist_info ist_info; | |
191 | EXPORT_SYMBOL(ist_info); | |
192 | #else | |
193 | struct ist_info ist_info; | |
194 | #endif | |
195 | ||
196 | #else | |
197 | struct cpuinfo_x86 boot_cpu_data __read_mostly; | |
198 | EXPORT_SYMBOL(boot_cpu_data); | |
199 | #endif | |
200 | ||
201 | ||
202 | #if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) | |
203 | unsigned long mmu_cr4_features; | |
204 | #else | |
205 | unsigned long mmu_cr4_features = X86_CR4_PAE; | |
206 | #endif | |
207 | ||
1da177e4 LT |
208 | /* Boot loader ID as an integer, for the benefit of proc_dointvec */ |
209 | int bootloader_type; | |
210 | ||
1c6e5503 YL |
211 | /* |
212 | * Early DMI memory | |
213 | */ | |
214 | int dmi_alloc_index; | |
215 | char dmi_alloc_data[DMI_MAX_DATA]; | |
216 | ||
1da177e4 LT |
217 | /* |
218 | * Setup options | |
219 | */ | |
1da177e4 | 220 | struct screen_info screen_info; |
129f6946 | 221 | EXPORT_SYMBOL(screen_info); |
1da177e4 | 222 | struct edid_info edid_info; |
5e518d76 | 223 | EXPORT_SYMBOL_GPL(edid_info); |
1da177e4 | 224 | |
1da177e4 LT |
225 | extern int root_mountflags; |
226 | ||
e44b7b75 | 227 | unsigned long saved_video_mode; |
1da177e4 | 228 | |
cf8fa920 | 229 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
1da177e4 | 230 | #define RAMDISK_PROMPT_FLAG 0x8000 |
cf8fa920 | 231 | #define RAMDISK_LOAD_FLAG 0x4000 |
1da177e4 | 232 | |
4e498b66 | 233 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
1da177e4 | 234 | |
1da177e4 LT |
235 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
236 | struct edd edd; | |
237 | #ifdef CONFIG_EDD_MODULE | |
238 | EXPORT_SYMBOL(edd); | |
239 | #endif | |
240 | /** | |
241 | * copy_edd() - Copy the BIOS EDD information | |
242 | * from boot_params into a safe place. | |
243 | * | |
244 | */ | |
245 | static inline void copy_edd(void) | |
246 | { | |
30c82645 PA |
247 | memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer, |
248 | sizeof(edd.mbr_signature)); | |
249 | memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info)); | |
250 | edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries; | |
251 | edd.edd_info_nr = boot_params.eddbuf_entries; | |
1da177e4 LT |
252 | } |
253 | #else | |
254 | static inline void copy_edd(void) | |
255 | { | |
256 | } | |
257 | #endif | |
258 | ||
cf8fa920 PA |
259 | #ifdef CONFIG_BLK_DEV_INITRD |
260 | ||
eb1379cb | 261 | #ifdef CONFIG_X86_32 |
cf8fa920 | 262 | |
eb1379cb YL |
263 | #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) |
264 | static void __init relocate_initrd(void) | |
cf8fa920 | 265 | { |
eb1379cb | 266 | |
ba5b14cc YL |
267 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
268 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
ba5b14cc YL |
269 | u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT; |
270 | u64 ramdisk_here; | |
eb1379cb YL |
271 | unsigned long slop, clen, mapaddr; |
272 | char *p, *q; | |
cf8fa920 PA |
273 | |
274 | /* We need to move the initrd down into lowmem */ | |
4e29684c YL |
275 | ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size, |
276 | PAGE_SIZE); | |
cf8fa920 | 277 | |
3945e2c9 YL |
278 | if (ramdisk_here == -1ULL) |
279 | panic("Cannot find place for new RAMDISK of size %lld\n", | |
280 | ramdisk_size); | |
281 | ||
cf8fa920 PA |
282 | /* Note: this includes all the lowmem currently occupied by |
283 | the initrd, we rely on that fact to keep the data intact. */ | |
3945e2c9 | 284 | reserve_early(ramdisk_here, ramdisk_here + ramdisk_size, |
ba5b14cc | 285 | "NEW RAMDISK"); |
cf8fa920 PA |
286 | initrd_start = ramdisk_here + PAGE_OFFSET; |
287 | initrd_end = initrd_start + ramdisk_size; | |
f0d43100 YL |
288 | printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n", |
289 | ramdisk_here, ramdisk_here + ramdisk_size); | |
cf8fa920 | 290 | |
cf8fa920 PA |
291 | q = (char *)initrd_start; |
292 | ||
293 | /* Copy any lowmem portion of the initrd */ | |
294 | if (ramdisk_image < end_of_lowmem) { | |
295 | clen = end_of_lowmem - ramdisk_image; | |
296 | p = (char *)__va(ramdisk_image); | |
297 | memcpy(q, p, clen); | |
298 | q += clen; | |
299 | ramdisk_image += clen; | |
300 | ramdisk_size -= clen; | |
301 | } | |
302 | ||
303 | /* Copy the highmem portion of the initrd */ | |
304 | while (ramdisk_size) { | |
305 | slop = ramdisk_image & ~PAGE_MASK; | |
306 | clen = ramdisk_size; | |
307 | if (clen > MAX_MAP_CHUNK-slop) | |
308 | clen = MAX_MAP_CHUNK-slop; | |
309 | mapaddr = ramdisk_image & PAGE_MASK; | |
beacfaac | 310 | p = early_ioremap(mapaddr, clen+slop); |
cf8fa920 | 311 | memcpy(q, p+slop, clen); |
beacfaac | 312 | early_iounmap(p, clen+slop); |
cf8fa920 PA |
313 | q += clen; |
314 | ramdisk_image += clen; | |
315 | ramdisk_size -= clen; | |
316 | } | |
a4c81cf6 | 317 | /* high pages is not converted by early_res_to_bootmem */ |
ba5b14cc YL |
318 | ramdisk_image = boot_params.hdr.ramdisk_image; |
319 | ramdisk_size = boot_params.hdr.ramdisk_size; | |
eb1379cb YL |
320 | printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to" |
321 | " %08llx - %08llx\n", | |
ba5b14cc YL |
322 | ramdisk_image, ramdisk_image + ramdisk_size - 1, |
323 | ramdisk_here, ramdisk_here + ramdisk_size - 1); | |
eb1379cb YL |
324 | } |
325 | #endif | |
9a27f5c5 | 326 | |
eb1379cb YL |
327 | static void __init reserve_initrd(void) |
328 | { | |
329 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; | |
330 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; | |
331 | u64 ramdisk_end = ramdisk_image + ramdisk_size; | |
332 | u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT; | |
333 | ||
334 | if (!boot_params.hdr.type_of_loader || | |
335 | !ramdisk_image || !ramdisk_size) | |
336 | return; /* No initrd provided by bootloader */ | |
337 | ||
338 | initrd_start = 0; | |
339 | ||
340 | if (ramdisk_size >= (end_of_lowmem>>1)) { | |
341 | free_early(ramdisk_image, ramdisk_end); | |
342 | printk(KERN_ERR "initrd too large to handle, " | |
343 | "disabling initrd\n"); | |
344 | return; | |
345 | } | |
346 | ||
347 | printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image, | |
348 | ramdisk_end); | |
349 | ||
350 | ||
351 | if (ramdisk_end <= end_of_lowmem) { | |
352 | /* All in lowmem, easy case */ | |
353 | /* | |
354 | * don't need to reserve again, already reserved early | |
355 | * in i386_start_kernel | |
356 | */ | |
357 | initrd_start = ramdisk_image + PAGE_OFFSET; | |
358 | initrd_end = initrd_start + ramdisk_size; | |
359 | return; | |
360 | } | |
361 | ||
362 | #ifdef CONFIG_X86_32 | |
363 | relocate_initrd(); | |
364 | #else | |
365 | printk(KERN_ERR "initrd extends beyond end of memory " | |
366 | "(0x%08llx > 0x%08llx)\ndisabling initrd\n", | |
367 | ramdisk_end, end_of_lowmem); | |
368 | initrd_start = 0; | |
369 | #endif | |
370 | free_early(ramdisk_image, ramdisk_end); | |
cf8fa920 | 371 | } |
225c37d7 | 372 | #else |
eb1379cb | 373 | static void __init reserve_initrd(void) |
225c37d7 YL |
374 | { |
375 | } | |
cf8fa920 PA |
376 | #endif /* CONFIG_BLK_DEV_INITRD */ |
377 | ||
257b0fde YL |
378 | void __init parse_setup_data(void) |
379 | { | |
380 | struct setup_data *data; | |
381 | u64 pa_data; | |
382 | ||
383 | if (boot_params.hdr.version < 0x0209) | |
384 | return; | |
385 | pa_data = boot_params.hdr.setup_data; | |
386 | while (pa_data) { | |
387 | data = early_ioremap(pa_data, PAGE_SIZE); | |
388 | switch (data->type) { | |
389 | case SETUP_E820_EXT: | |
390 | parse_e820_ext(data, pa_data); | |
391 | break; | |
392 | default: | |
393 | break; | |
394 | } | |
395 | #ifndef CONFIG_DEBUG_BOOT_PARAMS | |
396 | free_early(pa_data, pa_data+sizeof(*data)+data->len); | |
397 | #endif | |
398 | pa_data = data->next; | |
399 | early_iounmap(data, PAGE_SIZE); | |
400 | } | |
401 | } | |
402 | ||
ccb4defa YL |
403 | /* |
404 | * --------- Crashkernel reservation ------------------------------ | |
405 | */ | |
406 | ||
407 | #ifdef CONFIG_KEXEC | |
408 | static inline unsigned long long get_total_mem(void) | |
409 | { | |
410 | unsigned long long total; | |
411 | ||
412 | total = max_low_pfn - min_low_pfn; | |
413 | #ifdef CONFIG_HIGHMEM | |
414 | total += highend_pfn - highstart_pfn; | |
415 | #endif | |
416 | ||
417 | return total << PAGE_SHIFT; | |
418 | } | |
419 | ||
420 | void __init reserve_crashkernel(void) | |
421 | { | |
422 | unsigned long long total_mem; | |
423 | unsigned long long crash_size, crash_base; | |
424 | int ret; | |
425 | ||
426 | total_mem = get_total_mem(); | |
427 | ||
428 | ret = parse_crashkernel(boot_command_line, total_mem, | |
429 | &crash_size, &crash_base); | |
430 | if (ret == 0 && crash_size > 0) { | |
431 | if (crash_base <= 0) { | |
432 | printk(KERN_INFO "crashkernel reservation failed - " | |
433 | "you have to specify a base address\n"); | |
434 | return; | |
435 | } | |
436 | ||
437 | if (reserve_bootmem_generic(crash_base, crash_size, | |
438 | BOOTMEM_EXCLUSIVE) < 0) { | |
439 | printk(KERN_INFO "crashkernel reservation failed - " | |
440 | "memory is in use\n"); | |
441 | return; | |
442 | } | |
443 | ||
444 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " | |
445 | "for crashkernel (System RAM: %ldMB)\n", | |
446 | (unsigned long)(crash_size >> 20), | |
447 | (unsigned long)(crash_base >> 20), | |
448 | (unsigned long)(total_mem >> 20)); | |
449 | ||
450 | crashk_res.start = crash_base; | |
451 | crashk_res.end = crash_base + crash_size - 1; | |
452 | insert_resource(&iomem_resource, &crashk_res); | |
453 | } | |
454 | } | |
455 | #else | |
456 | void __init reserve_crashkernel(void) | |
457 | { | |
458 | } | |
459 | #endif | |
460 | ||
bdba0e70 YL |
461 | static struct resource standard_io_resources[] = { |
462 | { .name = "dma1", .start = 0x00, .end = 0x1f, | |
463 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
464 | { .name = "pic1", .start = 0x20, .end = 0x21, | |
465 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
466 | { .name = "timer0", .start = 0x40, .end = 0x43, | |
467 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
468 | { .name = "timer1", .start = 0x50, .end = 0x53, | |
469 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
470 | { .name = "keyboard", .start = 0x60, .end = 0x60, | |
471 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
472 | { .name = "keyboard", .start = 0x64, .end = 0x64, | |
473 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
474 | { .name = "dma page reg", .start = 0x80, .end = 0x8f, | |
475 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
476 | { .name = "pic2", .start = 0xa0, .end = 0xa1, | |
477 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
478 | { .name = "dma2", .start = 0xc0, .end = 0xdf, | |
479 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, | |
480 | { .name = "fpu", .start = 0xf0, .end = 0xff, | |
481 | .flags = IORESOURCE_BUSY | IORESOURCE_IO } | |
482 | }; | |
483 | ||
484 | void __init reserve_standard_io_resources(void) | |
485 | { | |
486 | int i; | |
487 | ||
488 | /* request I/O space for devices used on all i[345]86 PCs */ | |
489 | for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) | |
490 | request_resource(&ioport_resource, &standard_io_resources[i]); | |
491 | ||
492 | } | |
493 | ||
1da177e4 LT |
494 | /* |
495 | * Determine if we were loaded by an EFI loader. If so, then we have also been | |
496 | * passed the efi memmap, systab, etc., so we should use these data structures | |
497 | * for initialization. Note, the efi init code path is determined by the | |
498 | * global efi_enabled. This allows the same kernel image to be used on existing | |
499 | * systems (with a traditional BIOS) as well as on EFI systems. | |
500 | */ | |
76934ed4 YL |
501 | /* |
502 | * setup_arch - architecture-specific boot-time initializations | |
503 | * | |
504 | * Note: On x86_64, fixmaps are ready for use even before this is called. | |
505 | */ | |
506 | ||
1da177e4 LT |
507 | void __init setup_arch(char **cmdline_p) |
508 | { | |
76934ed4 | 509 | #ifdef CONFIG_X86_32 |
1da177e4 LT |
510 | memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); |
511 | pre_setup_arch_hook(); | |
512 | early_cpu_init(); | |
beacfaac | 513 | early_ioremap_init(); |
c45a707d | 514 | reserve_setup_data(); |
76934ed4 YL |
515 | #else |
516 | printk(KERN_INFO "Command line: %s\n", boot_command_line); | |
517 | #endif | |
1da177e4 | 518 | |
30c82645 PA |
519 | ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); |
520 | screen_info = boot_params.screen_info; | |
521 | edid_info = boot_params.edid_info; | |
76934ed4 | 522 | #ifdef CONFIG_X86_32 |
30c82645 PA |
523 | apm_info.bios = boot_params.apm_bios_info; |
524 | ist_info = boot_params.ist_info; | |
76934ed4 | 525 | if (boot_params.sys_desc_table.length != 0) { |
30c82645 PA |
526 | set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2); |
527 | machine_id = boot_params.sys_desc_table.table[0]; | |
528 | machine_submodel_id = boot_params.sys_desc_table.table[1]; | |
529 | BIOS_revision = boot_params.sys_desc_table.table[2]; | |
1da177e4 | 530 | } |
76934ed4 YL |
531 | #endif |
532 | saved_video_mode = boot_params.hdr.vid_mode; | |
30c82645 | 533 | bootloader_type = boot_params.hdr.type_of_loader; |
1da177e4 LT |
534 | |
535 | #ifdef CONFIG_BLK_DEV_RAM | |
30c82645 PA |
536 | rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK; |
537 | rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); | |
538 | rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); | |
1da177e4 | 539 | #endif |
7465252e YL |
540 | #ifdef CONFIG_EFI |
541 | if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, | |
76934ed4 YL |
542 | #ifdef CONFIG_X86_32 |
543 | "EL32", | |
544 | #else | |
545 | "EL64", | |
546 | #endif | |
547 | 4)) { | |
7465252e YL |
548 | efi_enabled = 1; |
549 | efi_reserve_early(); | |
550 | } | |
551 | #endif | |
552 | ||
1da177e4 | 553 | ARCH_SETUP |
2215e69d | 554 | |
0dbfafa5 | 555 | setup_memory_map(); |
1da177e4 LT |
556 | copy_edd(); |
557 | ||
30c82645 | 558 | if (!boot_params.hdr.root_flags) |
1da177e4 LT |
559 | root_mountflags &= ~MS_RDONLY; |
560 | init_mm.start_code = (unsigned long) _text; | |
561 | init_mm.end_code = (unsigned long) _etext; | |
562 | init_mm.end_data = (unsigned long) _edata; | |
76934ed4 | 563 | #ifdef CONFIG_X86_32 |
1da177e4 | 564 | init_mm.brk = init_pg_tables_end + PAGE_OFFSET; |
76934ed4 YL |
565 | #else |
566 | init_mm.brk = (unsigned long) &_end; | |
567 | #endif | |
1da177e4 LT |
568 | |
569 | code_resource.start = virt_to_phys(_text); | |
570 | code_resource.end = virt_to_phys(_etext)-1; | |
571 | data_resource.start = virt_to_phys(_etext); | |
572 | data_resource.end = virt_to_phys(_edata)-1; | |
00bf4098 BW |
573 | bss_resource.start = virt_to_phys(&__bss_start); |
574 | bss_resource.end = virt_to_phys(&__bss_stop)-1; | |
1da177e4 | 575 | |
76934ed4 YL |
576 | #ifdef CONFIG_X86_64 |
577 | early_cpu_init(); | |
578 | #endif | |
9a2e5930 YL |
579 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
580 | *cmdline_p = command_line; | |
581 | ||
c45a707d HY |
582 | parse_setup_data(); |
583 | ||
1a3f239d | 584 | parse_early_param(); |
1da177e4 | 585 | |
76934ed4 | 586 | if (acpi_mps_check()) { |
3eb11edc | 587 | #ifdef CONFIG_X86_LOCAL_APIC |
76934ed4 | 588 | #ifdef CONFIG_X86_32 |
3c999f14 | 589 | enable_local_apic = -1; |
76934ed4 YL |
590 | #else |
591 | disable_apic = 1; | |
592 | #endif | |
3eb11edc | 593 | #endif |
3c999f14 YL |
594 | clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC); |
595 | } | |
596 | ||
0dbfafa5 | 597 | finish_e820_parsing(); |
1a3f239d | 598 | |
76934ed4 | 599 | #ifdef CONFIG_X86_32 |
41c094fd | 600 | probe_roms(); |
76934ed4 YL |
601 | #else |
602 | # ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT | |
603 | if (init_ohci1394_dma_early) | |
604 | init_ohci1394_dma_on_all_controllers(); | |
605 | # endif | |
606 | #endif | |
41c094fd YL |
607 | |
608 | /* after parse_early_param, so could debug it */ | |
609 | insert_resource(&iomem_resource, &code_resource); | |
610 | insert_resource(&iomem_resource, &data_resource); | |
611 | insert_resource(&iomem_resource, &bss_resource); | |
612 | ||
8b2cb7a8 HY |
613 | if (efi_enabled) |
614 | efi_init(); | |
615 | ||
76934ed4 | 616 | #ifdef CONFIG_X86_32 |
cc9f7a0c YL |
617 | if (ppro_with_ram_bug()) { |
618 | e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM, | |
619 | E820_RESERVED); | |
620 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); | |
621 | printk(KERN_INFO "fixed physical RAM map:\n"); | |
622 | e820_print_map("bad_ppro"); | |
623 | } | |
76934ed4 YL |
624 | #else |
625 | early_gart_iommu_check(); | |
626 | #endif | |
cc9f7a0c | 627 | |
7b2a0a6c YL |
628 | e820_register_active_regions(0, 0, -1UL); |
629 | /* | |
630 | * partially used pages are not usable - thus | |
631 | * we are rounding upwards: | |
632 | */ | |
633 | max_pfn = e820_end_of_ram(); | |
634 | ||
6780711e YL |
635 | /* preallocate 4k for mptable mpc */ |
636 | early_reserve_e820_mpc_new(); | |
093af8d7 YL |
637 | /* update e820 for memory not covered by WB MTRRs */ |
638 | mtrr_bp_init(); | |
7b2a0a6c YL |
639 | if (mtrr_trim_uncached_memory(max_pfn)) { |
640 | remove_all_active_ranges(); | |
641 | e820_register_active_regions(0, 0, -1UL); | |
642 | max_pfn = e820_end_of_ram(); | |
643 | } | |
76c32418 | 644 | |
76934ed4 | 645 | #ifdef CONFIG_X86_32 |
4e29684c | 646 | /* max_low_pfn get updated here */ |
2ec65f8b | 647 | find_low_pfn_range(); |
76934ed4 YL |
648 | #else |
649 | num_physpages = max_pfn; | |
650 | ||
651 | check_efer(); | |
652 | ||
653 | /* How many end-of-memory variables you have, grandma! */ | |
654 | /* need this before calling reserve_initrd */ | |
655 | max_low_pfn = max_pfn; | |
656 | high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; | |
657 | #endif | |
2ec65f8b | 658 | |
4e29684c | 659 | /* max_pfn_mapped is updated here */ |
b9d19f4a | 660 | max_pfn_mapped = init_memory_mapping(0, (max_low_pfn << PAGE_SHIFT)); |
4e29684c | 661 | |
2ec65f8b YL |
662 | reserve_initrd(); |
663 | ||
76934ed4 YL |
664 | #ifdef CONFIG_X86_64 |
665 | vsmp_init(); | |
666 | #endif | |
667 | ||
1c6e5503 YL |
668 | dmi_scan_machine(); |
669 | ||
670 | io_delay_init(); | |
671 | ||
1c6e5503 YL |
672 | /* |
673 | * Parse the ACPI tables for possible boot-time SMP configuration. | |
674 | */ | |
675 | acpi_boot_table_init(); | |
1c6e5503 | 676 | |
76934ed4 YL |
677 | #ifdef CONFIG_X86_64 |
678 | /* Remove active ranges so rediscovery with NUMA-awareness happens */ | |
679 | remove_all_active_ranges(); | |
680 | #endif | |
681 | ||
1c6e5503 | 682 | #ifdef CONFIG_ACPI_NUMA |
f2f865fe YL |
683 | /* |
684 | * Parse SRAT to discover nodes. | |
685 | */ | |
686 | acpi_numa_init(); | |
1c6e5503 YL |
687 | #endif |
688 | ||
2ec65f8b | 689 | initmem_init(0, max_pfn); |
093af8d7 | 690 | |
76934ed4 YL |
691 | #ifdef CONFIG_X86_64 |
692 | dma32_reserve_bootmem(); | |
693 | #endif | |
694 | ||
593a0cc3 YL |
695 | #ifdef CONFIG_ACPI_SLEEP |
696 | /* | |
697 | * Reserve low memory region for sleep support. | |
698 | */ | |
699 | acpi_reserve_bootmem(); | |
700 | #endif | |
76934ed4 YL |
701 | #if defined(CONFIG_X86_FIND_SMP_CONFIG) && defined(CONFIG_X86_32) || \ |
702 | defined(CONFIG_X86_MPPARSE) && defined(CONFIG_X86_64) | |
593a0cc3 YL |
703 | /* |
704 | * Find and reserve possible boot-time SMP configuration: | |
705 | */ | |
706 | find_smp_config(); | |
707 | #endif | |
708 | reserve_crashkernel(); | |
709 | ||
710 | reserve_ibft_region(); | |
711 | ||
790c73f6 GOC |
712 | #ifdef CONFIG_KVM_CLOCK |
713 | kvmclock_init(); | |
714 | #endif | |
715 | ||
76934ed4 | 716 | #if defined(CONFIG_VMI) && defined(CONFIG_X86_32) |
7ce0bcfd ZA |
717 | /* |
718 | * Must be after max_low_pfn is determined, and before kernel | |
719 | * pagetables are setup. | |
720 | */ | |
721 | vmi_init(); | |
722 | #endif | |
1da177e4 | 723 | |
1da177e4 | 724 | paging_init(); |
f212ec4b | 725 | |
76934ed4 YL |
726 | #ifdef CONFIG_X86_64 |
727 | map_vsyscall(); | |
728 | #endif | |
729 | ||
f212ec4b BK |
730 | /* |
731 | * NOTE: On x86-32, only from this point on, fixmaps are ready for use. | |
732 | */ | |
733 | ||
76934ed4 | 734 | #if defined(CONFIG_PROVIDE_OHCI1394_DMA_INIT) && defined(CONFIG_X86_32) |
f212ec4b BK |
735 | if (init_ohci1394_dma_early) |
736 | init_ohci1394_dma_on_all_controllers(); | |
737 | #endif | |
738 | ||
1da177e4 | 739 | #ifdef CONFIG_X86_GENERICARCH |
1a3f239d | 740 | generic_apic_probe(); |
cf8fa920 | 741 | #endif |
1da177e4 | 742 | |
54ef3400 | 743 | early_quirks(); |
d44647b0 | 744 | |
295deae4 YL |
745 | /* |
746 | * Read APIC and some other early information from ACPI tables. | |
747 | */ | |
1da177e4 | 748 | acpi_boot_init(); |
04606618 | 749 | |
76934ed4 YL |
750 | #ifdef CONFIG_X86_64 |
751 | init_cpu_to_node(); | |
752 | #endif | |
753 | ||
e0da3364 | 754 | #if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS) |
295deae4 YL |
755 | /* |
756 | * get boot-time SMP configuration: | |
757 | */ | |
e0da3364 YL |
758 | if (smp_found_config) |
759 | get_smp_config(); | |
760 | #endif | |
76934ed4 YL |
761 | |
762 | #ifdef CONFIG_X86_64 | |
763 | init_apic_mappings(); | |
764 | ioapic_init_mappings(); | |
765 | #else | |
766 | # if defined(CONFIG_SMP) && defined(CONFIG_X86_PC) | |
911a62d4 VP |
767 | if (def_to_bigsmp) |
768 | printk(KERN_WARNING "More than 8 CPUs detected and " | |
769 | "CONFIG_X86_PC cannot handle it.\nUse " | |
770 | "CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n"); | |
76934ed4 | 771 | # endif |
911a62d4 | 772 | #endif |
295deae4 | 773 | kvm_guest_init(); |
1da177e4 | 774 | |
41c094fd | 775 | e820_reserve_resources(); |
bf62f398 | 776 | e820_mark_nosave_regions(max_low_pfn); |
1da177e4 | 777 | |
76934ed4 | 778 | #ifdef CONFIG_X86_32 |
41c094fd | 779 | request_resource(&iomem_resource, &video_ram_resource); |
76934ed4 | 780 | #endif |
ce97c40e | 781 | reserve_standard_io_resources(); |
41c094fd YL |
782 | |
783 | e820_setup_gap(); | |
784 | ||
1da177e4 LT |
785 | #ifdef CONFIG_VT |
786 | #if defined(CONFIG_VGA_CONSOLE) | |
787 | if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) | |
788 | conswitchp = &vga_con; | |
789 | #elif defined(CONFIG_DUMMY_CONSOLE) | |
790 | conswitchp = &dummy_con; | |
791 | #endif | |
792 | #endif | |
793 | } | |
c9cce83d | 794 |