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24#include <linux/sched.h>
25#include <linux/mm.h>
26#include <linux/mmzone.h>
27#include <linux/screen_info.h>
28#include <linux/ioport.h>
29#include <linux/acpi.h>
30#include <linux/sfi.h>
31#include <linux/apm_bios.h>
32#include <linux/initrd.h>
33#include <linux/bootmem.h>
34#include <linux/seq_file.h>
35#include <linux/console.h>
36#include <linux/mca.h>
37#include <linux/root_dev.h>
38#include <linux/highmem.h>
39#include <linux/module.h>
40#include <linux/efi.h>
41#include <linux/init.h>
42#include <linux/edd.h>
43#include <linux/iscsi_ibft.h>
44#include <linux/nodemask.h>
45#include <linux/kexec.h>
46#include <linux/dmi.h>
47#include <linux/pfn.h>
48#include <linux/pci.h>
49#include <asm/pci-direct.h>
50#include <linux/init_ohci1394_dma.h>
51#include <linux/kvm_para.h>
52
53#include <linux/errno.h>
54#include <linux/kernel.h>
55#include <linux/stddef.h>
56#include <linux/unistd.h>
57#include <linux/ptrace.h>
58#include <linux/slab.h>
59#include <linux/user.h>
60#include <linux/delay.h>
61
62#include <linux/kallsyms.h>
63#include <linux/cpufreq.h>
64#include <linux/dma-mapping.h>
65#include <linux/ctype.h>
66#include <linux/uaccess.h>
67
68#include <linux/percpu.h>
69#include <linux/crash_dump.h>
70#include <linux/tboot.h>
71
72#include <video/edid.h>
73
74#include <asm/mtrr.h>
75#include <asm/apic.h>
76#include <asm/e820.h>
77#include <asm/mpspec.h>
78#include <asm/setup.h>
79#include <asm/efi.h>
80#include <asm/timer.h>
81#include <asm/i8259.h>
82#include <asm/sections.h>
83#include <asm/dmi.h>
84#include <asm/io_apic.h>
85#include <asm/ist.h>
86#include <asm/vmi.h>
87#include <asm/setup_arch.h>
88#include <asm/bios_ebda.h>
89#include <asm/cacheflush.h>
90#include <asm/processor.h>
91#include <asm/bugs.h>
92
93#include <asm/system.h>
94#include <asm/vsyscall.h>
95#include <asm/cpu.h>
96#include <asm/desc.h>
97#include <asm/dma.h>
98#include <asm/iommu.h>
99#include <asm/gart.h>
100#include <asm/mmu_context.h>
101#include <asm/proto.h>
102
103#include <asm/paravirt.h>
104#include <asm/hypervisor.h>
105
106#include <asm/percpu.h>
107#include <asm/topology.h>
108#include <asm/apicdef.h>
109#ifdef CONFIG_X86_64
110#include <asm/numa_64.h>
111#endif
112
113
114
115
116
117
118unsigned long max_low_pfn_mapped;
119unsigned long max_pfn_mapped;
120
121RESERVE_BRK(dmi_alloc, 65536);
122
123unsigned int boot_cpu_id __read_mostly;
124
125static __initdata unsigned long _brk_start = (unsigned long)__brk_base;
126unsigned long _brk_end = (unsigned long)__brk_base;
127
128#ifdef CONFIG_X86_64
129int default_cpu_present_to_apicid(int mps_cpu)
130{
131 return __default_cpu_present_to_apicid(mps_cpu);
132}
133
134int default_check_phys_apicid_present(int phys_apicid)
135{
136 return __default_check_phys_apicid_present(phys_apicid);
137}
138#endif
139
140#ifndef CONFIG_DEBUG_BOOT_PARAMS
141struct boot_params __initdata boot_params;
142#else
143struct boot_params boot_params;
144#endif
145
146
147
148
149static struct resource data_resource = {
150 .name = "Kernel data",
151 .start = 0,
152 .end = 0,
153 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
154};
155
156static struct resource code_resource = {
157 .name = "Kernel code",
158 .start = 0,
159 .end = 0,
160 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
161};
162
163static struct resource bss_resource = {
164 .name = "Kernel bss",
165 .start = 0,
166 .end = 0,
167 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
168};
169
170
171#ifdef CONFIG_X86_32
172
173struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1};
174
175struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1};
176EXPORT_SYMBOL(boot_cpu_data);
177static void set_mca_bus(int x)
178{
179#ifdef CONFIG_MCA
180 MCA_bus = x;
181#endif
182}
183
184unsigned int def_to_bigsmp;
185
186
187unsigned int machine_id;
188unsigned int machine_submodel_id;
189unsigned int BIOS_revision;
190
191struct apm_info apm_info;
192EXPORT_SYMBOL(apm_info);
193
194#if defined(CONFIG_X86_SPEEDSTEP_SMI) || \
195 defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
196struct ist_info ist_info;
197EXPORT_SYMBOL(ist_info);
198#else
199struct ist_info ist_info;
200#endif
201
202#else
203struct cpuinfo_x86 boot_cpu_data __read_mostly = {
204 .x86_phys_bits = MAX_PHYSMEM_BITS,
205};
206EXPORT_SYMBOL(boot_cpu_data);
207#endif
208
209
210#if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
211unsigned long mmu_cr4_features;
212#else
213unsigned long mmu_cr4_features = X86_CR4_PAE;
214#endif
215
216
217int bootloader_type, bootloader_version;
218
219
220
221
222struct screen_info screen_info;
223EXPORT_SYMBOL(screen_info);
224struct edid_info edid_info;
225EXPORT_SYMBOL_GPL(edid_info);
226
227extern int root_mountflags;
228
229unsigned long saved_video_mode;
230
231#define RAMDISK_IMAGE_START_MASK 0x07FF
232#define RAMDISK_PROMPT_FLAG 0x8000
233#define RAMDISK_LOAD_FLAG 0x4000
234
235static char __initdata command_line[COMMAND_LINE_SIZE];
236#ifdef CONFIG_CMDLINE_BOOL
237static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE;
238#endif
239
240#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
241struct edd edd;
242#ifdef CONFIG_EDD_MODULE
243EXPORT_SYMBOL(edd);
244#endif
245
246
247
248
249
250static inline void copy_edd(void)
251{
252 memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer,
253 sizeof(edd.mbr_signature));
254 memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info));
255 edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries;
256 edd.edd_info_nr = boot_params.eddbuf_entries;
257}
258#else
259static inline void copy_edd(void)
260{
261}
262#endif
263
264void * __init extend_brk(size_t size, size_t align)
265{
266 size_t mask = align - 1;
267 void *ret;
268
269 BUG_ON(_brk_start == 0);
270 BUG_ON(align & mask);
271
272 _brk_end = (_brk_end + mask) & ~mask;
273 BUG_ON((char *)(_brk_end + size) > __brk_limit);
274
275 ret = (void *)_brk_end;
276 _brk_end += size;
277
278 memset(ret, 0, size);
279
280 return ret;
281}
282
283#ifdef CONFIG_X86_64
284static void __init init_gbpages(void)
285{
286 if (direct_gbpages && cpu_has_gbpages)
287 printk(KERN_INFO "Using GB pages for direct mapping\n");
288 else
289 direct_gbpages = 0;
290}
291#else
292static inline void init_gbpages(void)
293{
294}
295#endif
296
297static void __init reserve_brk(void)
298{
299 if (_brk_end > _brk_start)
300 reserve_early(__pa(_brk_start), __pa(_brk_end), "BRK");
301
302
303
304 _brk_start = 0;
305}
306
307#ifdef CONFIG_BLK_DEV_INITRD
308
309#define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT)
310static void __init relocate_initrd(void)
311{
312
313 u64 ramdisk_image = boot_params.hdr.ramdisk_image;
314 u64 ramdisk_size = boot_params.hdr.ramdisk_size;
315 u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT;
316 u64 ramdisk_here;
317 unsigned long slop, clen, mapaddr;
318 char *p, *q;
319
320
321 ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size,
322 PAGE_SIZE);
323
324 if (ramdisk_here == -1ULL)
325 panic("Cannot find place for new RAMDISK of size %lld\n",
326 ramdisk_size);
327
328
329
330 reserve_early(ramdisk_here, ramdisk_here + ramdisk_size,
331 "NEW RAMDISK");
332 initrd_start = ramdisk_here + PAGE_OFFSET;
333 initrd_end = initrd_start + ramdisk_size;
334 printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n",
335 ramdisk_here, ramdisk_here + ramdisk_size);
336
337 q = (char *)initrd_start;
338
339
340 if (ramdisk_image < end_of_lowmem) {
341 clen = end_of_lowmem - ramdisk_image;
342 p = (char *)__va(ramdisk_image);
343 memcpy(q, p, clen);
344 q += clen;
345 ramdisk_image += clen;
346 ramdisk_size -= clen;
347 }
348
349
350 while (ramdisk_size) {
351 slop = ramdisk_image & ~PAGE_MASK;
352 clen = ramdisk_size;
353 if (clen > MAX_MAP_CHUNK-slop)
354 clen = MAX_MAP_CHUNK-slop;
355 mapaddr = ramdisk_image & PAGE_MASK;
356 p = early_memremap(mapaddr, clen+slop);
357 memcpy(q, p+slop, clen);
358 early_iounmap(p, clen+slop);
359 q += clen;
360 ramdisk_image += clen;
361 ramdisk_size -= clen;
362 }
363
364 ramdisk_image = boot_params.hdr.ramdisk_image;
365 ramdisk_size = boot_params.hdr.ramdisk_size;
366 printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to"
367 " %08llx - %08llx\n",
368 ramdisk_image, ramdisk_image + ramdisk_size - 1,
369 ramdisk_here, ramdisk_here + ramdisk_size - 1);
370}
371
372static void __init reserve_initrd(void)
373{
374 u64 ramdisk_image = boot_params.hdr.ramdisk_image;
375 u64 ramdisk_size = boot_params.hdr.ramdisk_size;
376 u64 ramdisk_end = ramdisk_image + ramdisk_size;
377 u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT;
378
379 if (!boot_params.hdr.type_of_loader ||
380 !ramdisk_image || !ramdisk_size)
381 return;
382
383 initrd_start = 0;
384
385 if (ramdisk_size >= (end_of_lowmem>>1)) {
386 free_early(ramdisk_image, ramdisk_end);
387 printk(KERN_ERR "initrd too large to handle, "
388 "disabling initrd\n");
389 return;
390 }
391
392 printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image,
393 ramdisk_end);
394
395
396 if (ramdisk_end <= end_of_lowmem) {
397
398
399
400
401
402 initrd_start = ramdisk_image + PAGE_OFFSET;
403 initrd_end = initrd_start + ramdisk_size;
404 return;
405 }
406
407 relocate_initrd();
408
409 free_early(ramdisk_image, ramdisk_end);
410}
411#else
412static void __init reserve_initrd(void)
413{
414}
415#endif
416
417static void __init parse_setup_data(void)
418{
419 struct setup_data *data;
420 u64 pa_data;
421
422 if (boot_params.hdr.version < 0x0209)
423 return;
424 pa_data = boot_params.hdr.setup_data;
425 while (pa_data) {
426 data = early_memremap(pa_data, PAGE_SIZE);
427 switch (data->type) {
428 case SETUP_E820_EXT:
429 parse_e820_ext(data, pa_data);
430 break;
431 default:
432 break;
433 }
434 pa_data = data->next;
435 early_iounmap(data, PAGE_SIZE);
436 }
437}
438
439static void __init e820_reserve_setup_data(void)
440{
441 struct setup_data *data;
442 u64 pa_data;
443 int found = 0;
444
445 if (boot_params.hdr.version < 0x0209)
446 return;
447 pa_data = boot_params.hdr.setup_data;
448 while (pa_data) {
449 data = early_memremap(pa_data, sizeof(*data));
450 e820_update_range(pa_data, sizeof(*data)+data->len,
451 E820_RAM, E820_RESERVED_KERN);
452 found = 1;
453 pa_data = data->next;
454 early_iounmap(data, sizeof(*data));
455 }
456 if (!found)
457 return;
458
459 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
460 memcpy(&e820_saved, &e820, sizeof(struct e820map));
461 printk(KERN_INFO "extended physical RAM map:\n");
462 e820_print_map("reserve setup_data");
463}
464
465static void __init reserve_early_setup_data(void)
466{
467 struct setup_data *data;
468 u64 pa_data;
469 char buf[32];
470
471 if (boot_params.hdr.version < 0x0209)
472 return;
473 pa_data = boot_params.hdr.setup_data;
474 while (pa_data) {
475 data = early_memremap(pa_data, sizeof(*data));
476 sprintf(buf, "setup data %x", data->type);
477 reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf);
478 pa_data = data->next;
479 early_iounmap(data, sizeof(*data));
480 }
481}
482
483
484
485
486
487#ifdef CONFIG_KEXEC
488
489
490
491
492
493
494
495static
496unsigned long long __init find_and_reserve_crashkernel(unsigned long long size)
497{
498 const unsigned long long alignment = 16<<20;
499 unsigned long long start = 0LL;
500
501 while (1) {
502 int ret;
503
504 start = find_e820_area(start, ULONG_MAX, size, alignment);
505 if (start == -1ULL)
506 return start;
507
508
509 ret = reserve_bootmem_generic(start, size, BOOTMEM_EXCLUSIVE);
510 if (ret >= 0)
511 return start;
512
513 start += alignment;
514 }
515}
516
517static inline unsigned long long get_total_mem(void)
518{
519 unsigned long long total;
520
521 total = max_low_pfn - min_low_pfn;
522#ifdef CONFIG_HIGHMEM
523 total += highend_pfn - highstart_pfn;
524#endif
525
526 return total << PAGE_SHIFT;
527}
528
529static void __init reserve_crashkernel(void)
530{
531 unsigned long long total_mem;
532 unsigned long long crash_size, crash_base;
533 int ret;
534
535 total_mem = get_total_mem();
536
537 ret = parse_crashkernel(boot_command_line, total_mem,
538 &crash_size, &crash_base);
539 if (ret != 0 || crash_size <= 0)
540 return;
541
542
543 if (crash_base <= 0) {
544 crash_base = find_and_reserve_crashkernel(crash_size);
545 if (crash_base == -1ULL) {
546 pr_info("crashkernel reservation failed. "
547 "No suitable area found.\n");
548 return;
549 }
550 } else {
551 ret = reserve_bootmem_generic(crash_base, crash_size,
552 BOOTMEM_EXCLUSIVE);
553 if (ret < 0) {
554 pr_info("crashkernel reservation failed - "
555 "memory is in use\n");
556 return;
557 }
558 }
559
560 printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
561 "for crashkernel (System RAM: %ldMB)\n",
562 (unsigned long)(crash_size >> 20),
563 (unsigned long)(crash_base >> 20),
564 (unsigned long)(total_mem >> 20));
565
566 crashk_res.start = crash_base;
567 crashk_res.end = crash_base + crash_size - 1;
568 insert_resource(&iomem_resource, &crashk_res);
569}
570#else
571static void __init reserve_crashkernel(void)
572{
573}
574#endif
575
576static struct resource standard_io_resources[] = {
577 { .name = "dma1", .start = 0x00, .end = 0x1f,
578 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
579 { .name = "pic1", .start = 0x20, .end = 0x21,
580 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
581 { .name = "timer0", .start = 0x40, .end = 0x43,
582 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
583 { .name = "timer1", .start = 0x50, .end = 0x53,
584 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
585 { .name = "keyboard", .start = 0x60, .end = 0x60,
586 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
587 { .name = "keyboard", .start = 0x64, .end = 0x64,
588 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
589 { .name = "dma page reg", .start = 0x80, .end = 0x8f,
590 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
591 { .name = "pic2", .start = 0xa0, .end = 0xa1,
592 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
593 { .name = "dma2", .start = 0xc0, .end = 0xdf,
594 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
595 { .name = "fpu", .start = 0xf0, .end = 0xff,
596 .flags = IORESOURCE_BUSY | IORESOURCE_IO }
597};
598
599void __init reserve_standard_io_resources(void)
600{
601 int i;
602
603
604 for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
605 request_resource(&ioport_resource, &standard_io_resources[i]);
606
607}
608
609
610
611
612
613
614
615#ifdef CONFIG_CRASH_DUMP
616
617
618
619
620static int __init setup_elfcorehdr(char *arg)
621{
622 char *end;
623 if (!arg)
624 return -EINVAL;
625 elfcorehdr_addr = memparse(arg, &end);
626 return end > arg ? 0 : -EINVAL;
627}
628early_param("elfcorehdr", setup_elfcorehdr);
629#endif
630
631#ifdef CONFIG_X86_RESERVE_LOW_64K
632static int __init dmi_low_memory_corruption(const struct dmi_system_id *d)
633{
634 printk(KERN_NOTICE
635 "%s detected: BIOS may corrupt low RAM, working around it.\n",
636 d->ident);
637
638 e820_update_range(0, 0x10000, E820_RAM, E820_RESERVED);
639 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
640
641 return 0;
642}
643#endif
644
645
646static struct dmi_system_id __initdata bad_bios_dmi_table[] = {
647#ifdef CONFIG_X86_RESERVE_LOW_64K
648 {
649 .callback = dmi_low_memory_corruption,
650 .ident = "AMI BIOS",
651 .matches = {
652 DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."),
653 },
654 },
655 {
656 .callback = dmi_low_memory_corruption,
657 .ident = "Phoenix BIOS",
658 .matches = {
659 DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies"),
660 },
661 },
662 {
663 .callback = dmi_low_memory_corruption,
664 .ident = "Phoenix/MSC BIOS",
665 .matches = {
666 DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix/MSC"),
667 },
668 },
669 {
670
671
672
673
674
675
676 .callback = dmi_low_memory_corruption,
677 .ident = "AMI BIOS",
678 .matches = {
679 DMI_MATCH(DMI_BOARD_NAME, "DG45ID"),
680 },
681 },
682#endif
683 {}
684};
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699void __init setup_arch(char **cmdline_p)
700{
701#ifdef CONFIG_X86_32
702 memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
703 visws_early_detect();
704#else
705 printk(KERN_INFO "Command line: %s\n", boot_command_line);
706#endif
707
708
709 vmi_init();
710
711 early_cpu_init();
712 early_ioremap_init();
713
714 ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev);
715 screen_info = boot_params.screen_info;
716 edid_info = boot_params.edid_info;
717#ifdef CONFIG_X86_32
718 apm_info.bios = boot_params.apm_bios_info;
719 ist_info = boot_params.ist_info;
720 if (boot_params.sys_desc_table.length != 0) {
721 set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2);
722 machine_id = boot_params.sys_desc_table.table[0];
723 machine_submodel_id = boot_params.sys_desc_table.table[1];
724 BIOS_revision = boot_params.sys_desc_table.table[2];
725 }
726#endif
727 saved_video_mode = boot_params.hdr.vid_mode;
728 bootloader_type = boot_params.hdr.type_of_loader;
729 if ((bootloader_type >> 4) == 0xe) {
730 bootloader_type &= 0xf;
731 bootloader_type |= (boot_params.hdr.ext_loader_type+0x10) << 4;
732 }
733 bootloader_version = bootloader_type & 0xf;
734 bootloader_version |= boot_params.hdr.ext_loader_ver << 4;
735
736#ifdef CONFIG_BLK_DEV_RAM
737 rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK;
738 rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0);
739 rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0);
740#endif
741#ifdef CONFIG_EFI
742 if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
743#ifdef CONFIG_X86_32
744 "EL32",
745#else
746 "EL64",
747#endif
748 4)) {
749 efi_enabled = 1;
750 efi_reserve_early();
751 }
752#endif
753
754 x86_init.oem.arch_setup();
755
756 setup_memory_map();
757 parse_setup_data();
758
759 e820_reserve_setup_data();
760
761 copy_edd();
762
763 if (!boot_params.hdr.root_flags)
764 root_mountflags &= ~MS_RDONLY;
765 init_mm.start_code = (unsigned long) _text;
766 init_mm.end_code = (unsigned long) _etext;
767 init_mm.end_data = (unsigned long) _edata;
768 init_mm.brk = _brk_end;
769
770 code_resource.start = virt_to_phys(_text);
771 code_resource.end = virt_to_phys(_etext)-1;
772 data_resource.start = virt_to_phys(_etext);
773 data_resource.end = virt_to_phys(_edata)-1;
774 bss_resource.start = virt_to_phys(&__bss_start);
775 bss_resource.end = virt_to_phys(&__bss_stop)-1;
776
777#ifdef CONFIG_CMDLINE_BOOL
778#ifdef CONFIG_CMDLINE_OVERRIDE
779 strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
780#else
781 if (builtin_cmdline[0]) {
782
783 strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE);
784 strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE);
785 strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
786 }
787#endif
788#endif
789
790 strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
791 *cmdline_p = command_line;
792
793#ifdef CONFIG_X86_64
794
795
796
797
798
799
800 check_efer();
801#endif
802
803 parse_early_param();
804
805#ifdef CONFIG_X86_64
806 check_efer();
807#endif
808
809
810 vmi_activate();
811
812
813 reserve_early_setup_data();
814
815 if (acpi_mps_check()) {
816#ifdef CONFIG_X86_LOCAL_APIC
817 disable_apic = 1;
818#endif
819 setup_clear_cpu_cap(X86_FEATURE_APIC);
820 }
821
822#ifdef CONFIG_PCI
823 if (pci_early_dump_regs)
824 early_dump_pci_devices();
825#endif
826
827 finish_e820_parsing();
828
829 if (efi_enabled)
830 efi_init();
831
832 dmi_scan_machine();
833
834 dmi_check_system(bad_bios_dmi_table);
835
836
837
838
839
840 init_hypervisor_platform();
841
842 x86_init.resources.probe_roms();
843
844
845 insert_resource(&iomem_resource, &code_resource);
846 insert_resource(&iomem_resource, &data_resource);
847 insert_resource(&iomem_resource, &bss_resource);
848
849
850#ifdef CONFIG_X86_32
851 if (ppro_with_ram_bug()) {
852 e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
853 E820_RESERVED);
854 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
855 printk(KERN_INFO "fixed physical RAM map:\n");
856 e820_print_map("bad_ppro");
857 }
858#else
859 early_gart_iommu_check();
860#endif
861
862
863
864
865
866 max_pfn = e820_end_of_ram_pfn();
867
868
869 early_reserve_e820_mpc_new();
870
871 mtrr_bp_init();
872 if (mtrr_trim_uncached_memory(max_pfn))
873 max_pfn = e820_end_of_ram_pfn();
874
875#ifdef CONFIG_X86_32
876
877 find_low_pfn_range();
878#else
879 num_physpages = max_pfn;
880
881 check_x2apic();
882
883
884
885 if (max_pfn > (1UL<<(32 - PAGE_SHIFT)))
886 max_low_pfn = e820_end_of_low_ram_pfn();
887 else
888 max_low_pfn = max_pfn;
889
890 high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
891 max_pfn_mapped = KERNEL_IMAGE_SIZE >> PAGE_SHIFT;
892#endif
893
894#ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION
895 setup_bios_corruption_check();
896#endif
897
898 printk(KERN_DEBUG "initial memory mapped : 0 - %08lx\n",
899 max_pfn_mapped<<PAGE_SHIFT);
900
901 reserve_brk();
902
903 init_gbpages();
904
905
906 max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT);
907 max_pfn_mapped = max_low_pfn_mapped;
908
909#ifdef CONFIG_X86_64
910 if (max_pfn > max_low_pfn) {
911 max_pfn_mapped = init_memory_mapping(1UL<<32,
912 max_pfn<<PAGE_SHIFT);
913
914 max_low_pfn = max_pfn;
915 }
916#endif
917
918
919
920
921
922#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
923 if (init_ohci1394_dma_early)
924 init_ohci1394_dma_on_all_controllers();
925#endif
926
927 reserve_initrd();
928
929 vsmp_init();
930
931 io_delay_init();
932
933
934
935
936 acpi_boot_table_init();
937
938 early_acpi_boot_init();
939
940#ifdef CONFIG_ACPI_NUMA
941
942
943
944 acpi_numa_init();
945#endif
946
947 initmem_init(0, max_pfn);
948
949#ifdef CONFIG_ACPI_SLEEP
950
951
952
953 acpi_reserve_bootmem();
954#endif
955
956
957
958 find_smp_config();
959
960 reserve_crashkernel();
961
962#ifdef CONFIG_X86_64
963
964
965
966
967
968 dma32_reserve_bootmem();
969#endif
970
971 reserve_ibft_region();
972
973#ifdef CONFIG_KVM_CLOCK
974 kvmclock_init();
975#endif
976
977 x86_init.paging.pagetable_setup_start(swapper_pg_dir);
978 paging_init();
979 x86_init.paging.pagetable_setup_done(swapper_pg_dir);
980
981 tboot_probe();
982
983#ifdef CONFIG_X86_64
984 map_vsyscall();
985#endif
986
987 generic_apic_probe();
988
989 early_quirks();
990
991
992
993
994 acpi_boot_init();
995
996 sfi_init();
997
998
999
1000
1001 if (smp_found_config)
1002 get_smp_config();
1003
1004 prefill_possible_map();
1005
1006#ifdef CONFIG_X86_64
1007 init_cpu_to_node();
1008#endif
1009
1010 init_apic_mappings();
1011 ioapic_init_mappings();
1012
1013
1014 probe_nr_irqs_gsi();
1015
1016 kvm_guest_init();
1017
1018 e820_reserve_resources();
1019 e820_mark_nosave_regions(max_low_pfn);
1020
1021 x86_init.resources.reserve_resources();
1022
1023 e820_setup_gap();
1024
1025#ifdef CONFIG_VT
1026#if defined(CONFIG_VGA_CONSOLE)
1027 if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
1028 conswitchp = &vga_con;
1029#elif defined(CONFIG_DUMMY_CONSOLE)
1030 conswitchp = &dummy_con;
1031#endif
1032#endif
1033 x86_init.oem.banner();
1034}
1035
1036#ifdef CONFIG_X86_32
1037
1038static struct resource video_ram_resource = {
1039 .name = "Video RAM area",
1040 .start = 0xa0000,
1041 .end = 0xbffff,
1042 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
1043};
1044
1045void __init i386_reserve_resources(void)
1046{
1047 request_resource(&iomem_resource, &video_ram_resource);
1048 reserve_standard_io_resources();
1049}
1050
1051#endif
1052