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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/memblock.h>
35#include <linux/seq_file.h>
36#include <linux/console.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#include <linux/dma-contiguous.h>
53
54#include <linux/errno.h>
55#include <linux/kernel.h>
56#include <linux/stddef.h>
57#include <linux/unistd.h>
58#include <linux/ptrace.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#include <linux/jiffies.h>
72
73#include <video/edid.h>
74
75#include <asm/mtrr.h>
76#include <asm/apic.h>
77#include <asm/realmode.h>
78#include <asm/e820.h>
79#include <asm/mpspec.h>
80#include <asm/setup.h>
81#include <asm/efi.h>
82#include <asm/timer.h>
83#include <asm/i8259.h>
84#include <asm/sections.h>
85#include <asm/io_apic.h>
86#include <asm/ist.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/vsyscall.h>
94#include <asm/cpu.h>
95#include <asm/desc.h>
96#include <asm/dma.h>
97#include <asm/iommu.h>
98#include <asm/gart.h>
99#include <asm/mmu_context.h>
100#include <asm/proto.h>
101
102#include <asm/paravirt.h>
103#include <asm/hypervisor.h>
104#include <asm/olpc_ofw.h>
105
106#include <asm/percpu.h>
107#include <asm/topology.h>
108#include <asm/apicdef.h>
109#include <asm/amd_nb.h>
110#include <asm/mce.h>
111#include <asm/alternative.h>
112#include <asm/prom.h>
113
114
115
116
117
118
119
120
121unsigned long max_low_pfn_mapped;
122unsigned long max_pfn_mapped;
123
124#ifdef CONFIG_DMI
125RESERVE_BRK(dmi_alloc, 65536);
126#endif
127
128
129static __initdata unsigned long _brk_start = (unsigned long)__brk_base;
130unsigned long _brk_end = (unsigned long)__brk_base;
131
132#ifdef CONFIG_X86_64
133int default_cpu_present_to_apicid(int mps_cpu)
134{
135 return __default_cpu_present_to_apicid(mps_cpu);
136}
137
138int default_check_phys_apicid_present(int phys_apicid)
139{
140 return __default_check_phys_apicid_present(phys_apicid);
141}
142#endif
143
144struct boot_params boot_params;
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 = {
174 .wp_works_ok = -1,
175};
176
177struct cpuinfo_x86 boot_cpu_data __read_mostly = {
178 .wp_works_ok = -1,
179};
180EXPORT_SYMBOL(boot_cpu_data);
181
182unsigned int def_to_bigsmp;
183
184
185unsigned int machine_id;
186unsigned int machine_submodel_id;
187unsigned int BIOS_revision;
188
189struct apm_info apm_info;
190EXPORT_SYMBOL(apm_info);
191
192#if defined(CONFIG_X86_SPEEDSTEP_SMI) || \
193 defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
194struct ist_info ist_info;
195EXPORT_SYMBOL(ist_info);
196#else
197struct ist_info ist_info;
198#endif
199
200#else
201struct cpuinfo_x86 boot_cpu_data __read_mostly = {
202 .x86_phys_bits = MAX_PHYSMEM_BITS,
203};
204EXPORT_SYMBOL(boot_cpu_data);
205#endif
206
207
208#if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
209__visible unsigned long mmu_cr4_features;
210#else
211__visible unsigned long mmu_cr4_features = X86_CR4_PAE;
212#endif
213
214
215int bootloader_type, bootloader_version;
216
217
218
219
220struct screen_info screen_info;
221EXPORT_SYMBOL(screen_info);
222struct edid_info edid_info;
223EXPORT_SYMBOL_GPL(edid_info);
224
225extern int root_mountflags;
226
227unsigned long saved_video_mode;
228
229#define RAMDISK_IMAGE_START_MASK 0x07FF
230#define RAMDISK_PROMPT_FLAG 0x8000
231#define RAMDISK_LOAD_FLAG 0x4000
232
233static char __initdata command_line[COMMAND_LINE_SIZE];
234#ifdef CONFIG_CMDLINE_BOOL
235static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE;
236#endif
237
238#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
239struct edd edd;
240#ifdef CONFIG_EDD_MODULE
241EXPORT_SYMBOL(edd);
242#endif
243
244
245
246
247
248static inline void __init copy_edd(void)
249{
250 memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer,
251 sizeof(edd.mbr_signature));
252 memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info));
253 edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries;
254 edd.edd_info_nr = boot_params.eddbuf_entries;
255}
256#else
257static inline void __init copy_edd(void)
258{
259}
260#endif
261
262void * __init extend_brk(size_t size, size_t align)
263{
264 size_t mask = align - 1;
265 void *ret;
266
267 BUG_ON(_brk_start == 0);
268 BUG_ON(align & mask);
269
270 _brk_end = (_brk_end + mask) & ~mask;
271 BUG_ON((char *)(_brk_end + size) > __brk_limit);
272
273 ret = (void *)_brk_end;
274 _brk_end += size;
275
276 memset(ret, 0, size);
277
278 return ret;
279}
280
281#ifdef CONFIG_X86_32
282static void __init cleanup_highmap(void)
283{
284}
285#endif
286
287static void __init reserve_brk(void)
288{
289 if (_brk_end > _brk_start)
290 memblock_reserve(__pa_symbol(_brk_start),
291 _brk_end - _brk_start);
292
293
294
295 _brk_start = 0;
296}
297
298u64 relocated_ramdisk;
299
300#ifdef CONFIG_BLK_DEV_INITRD
301
302static u64 __init get_ramdisk_image(void)
303{
304 u64 ramdisk_image = boot_params.hdr.ramdisk_image;
305
306 ramdisk_image |= (u64)boot_params.ext_ramdisk_image << 32;
307
308 return ramdisk_image;
309}
310static u64 __init get_ramdisk_size(void)
311{
312 u64 ramdisk_size = boot_params.hdr.ramdisk_size;
313
314 ramdisk_size |= (u64)boot_params.ext_ramdisk_size << 32;
315
316 return ramdisk_size;
317}
318
319#define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT)
320static void __init relocate_initrd(void)
321{
322
323 u64 ramdisk_image = get_ramdisk_image();
324 u64 ramdisk_size = get_ramdisk_size();
325 u64 area_size = PAGE_ALIGN(ramdisk_size);
326 unsigned long slop, clen, mapaddr;
327 char *p, *q;
328
329
330 relocated_ramdisk = memblock_find_in_range(0, PFN_PHYS(max_pfn_mapped),
331 area_size, PAGE_SIZE);
332
333 if (!relocated_ramdisk)
334 panic("Cannot find place for new RAMDISK of size %lld\n",
335 ramdisk_size);
336
337
338
339 memblock_reserve(relocated_ramdisk, area_size);
340 initrd_start = relocated_ramdisk + PAGE_OFFSET;
341 initrd_end = initrd_start + ramdisk_size;
342 printk(KERN_INFO "Allocated new RAMDISK: [mem %#010llx-%#010llx]\n",
343 relocated_ramdisk, relocated_ramdisk + ramdisk_size - 1);
344
345 q = (char *)initrd_start;
346
347
348 while (ramdisk_size) {
349 slop = ramdisk_image & ~PAGE_MASK;
350 clen = ramdisk_size;
351 if (clen > MAX_MAP_CHUNK-slop)
352 clen = MAX_MAP_CHUNK-slop;
353 mapaddr = ramdisk_image & PAGE_MASK;
354 p = early_memremap(mapaddr, clen+slop);
355 memcpy(q, p+slop, clen);
356 early_iounmap(p, clen+slop);
357 q += clen;
358 ramdisk_image += clen;
359 ramdisk_size -= clen;
360 }
361
362 ramdisk_image = get_ramdisk_image();
363 ramdisk_size = get_ramdisk_size();
364 printk(KERN_INFO "Move RAMDISK from [mem %#010llx-%#010llx] to"
365 " [mem %#010llx-%#010llx]\n",
366 ramdisk_image, ramdisk_image + ramdisk_size - 1,
367 relocated_ramdisk, relocated_ramdisk + ramdisk_size - 1);
368}
369
370static void __init early_reserve_initrd(void)
371{
372
373 u64 ramdisk_image = get_ramdisk_image();
374 u64 ramdisk_size = get_ramdisk_size();
375 u64 ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size);
376
377 if (!boot_params.hdr.type_of_loader ||
378 !ramdisk_image || !ramdisk_size)
379 return;
380
381 memblock_reserve(ramdisk_image, ramdisk_end - ramdisk_image);
382}
383static void __init reserve_initrd(void)
384{
385
386 u64 ramdisk_image = get_ramdisk_image();
387 u64 ramdisk_size = get_ramdisk_size();
388 u64 ramdisk_end = PAGE_ALIGN(ramdisk_image + ramdisk_size);
389 u64 mapped_size;
390
391 if (!boot_params.hdr.type_of_loader ||
392 !ramdisk_image || !ramdisk_size)
393 return;
394
395 initrd_start = 0;
396
397 mapped_size = memblock_mem_size(max_pfn_mapped);
398 if (ramdisk_size >= (mapped_size>>1))
399 panic("initrd too large to handle, "
400 "disabling initrd (%lld needed, %lld available)\n",
401 ramdisk_size, mapped_size>>1);
402
403 printk(KERN_INFO "RAMDISK: [mem %#010llx-%#010llx]\n", ramdisk_image,
404 ramdisk_end - 1);
405
406 if (pfn_range_is_mapped(PFN_DOWN(ramdisk_image),
407 PFN_DOWN(ramdisk_end))) {
408
409 initrd_start = ramdisk_image + PAGE_OFFSET;
410 initrd_end = initrd_start + ramdisk_size;
411 return;
412 }
413
414 relocate_initrd();
415
416 memblock_free(ramdisk_image, ramdisk_end - ramdisk_image);
417}
418#else
419static void __init early_reserve_initrd(void)
420{
421}
422static void __init reserve_initrd(void)
423{
424}
425#endif
426
427static void __init parse_setup_data(void)
428{
429 struct setup_data *data;
430 u64 pa_data, pa_next;
431
432 pa_data = boot_params.hdr.setup_data;
433 while (pa_data) {
434 u32 data_len, map_len, data_type;
435
436 map_len = max(PAGE_SIZE - (pa_data & ~PAGE_MASK),
437 (u64)sizeof(struct setup_data));
438 data = early_memremap(pa_data, map_len);
439 data_len = data->len + sizeof(struct setup_data);
440 data_type = data->type;
441 pa_next = data->next;
442 early_iounmap(data, map_len);
443
444 switch (data_type) {
445 case SETUP_E820_EXT:
446 parse_e820_ext(pa_data, data_len);
447 break;
448 case SETUP_DTB:
449 add_dtb(pa_data);
450 break;
451 case SETUP_EFI:
452 parse_efi_setup(pa_data, data_len);
453 break;
454 default:
455 break;
456 }
457 pa_data = pa_next;
458 }
459}
460
461static void __init e820_reserve_setup_data(void)
462{
463 struct setup_data *data;
464 u64 pa_data;
465 int found = 0;
466
467 pa_data = boot_params.hdr.setup_data;
468 while (pa_data) {
469 data = early_memremap(pa_data, sizeof(*data));
470 e820_update_range(pa_data, sizeof(*data)+data->len,
471 E820_RAM, E820_RESERVED_KERN);
472 found = 1;
473 pa_data = data->next;
474 early_iounmap(data, sizeof(*data));
475 }
476 if (!found)
477 return;
478
479 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
480 memcpy(&e820_saved, &e820, sizeof(struct e820map));
481 printk(KERN_INFO "extended physical RAM map:\n");
482 e820_print_map("reserve setup_data");
483}
484
485static void __init memblock_x86_reserve_range_setup_data(void)
486{
487 struct setup_data *data;
488 u64 pa_data;
489
490 pa_data = boot_params.hdr.setup_data;
491 while (pa_data) {
492 data = early_memremap(pa_data, sizeof(*data));
493 memblock_reserve(pa_data, sizeof(*data) + data->len);
494 pa_data = data->next;
495 early_iounmap(data, sizeof(*data));
496 }
497}
498
499
500
501
502
503#ifdef CONFIG_KEXEC
504
505
506
507
508
509
510#ifdef CONFIG_X86_32
511# define CRASH_KERNEL_ADDR_LOW_MAX (512 << 20)
512# define CRASH_KERNEL_ADDR_HIGH_MAX (512 << 20)
513#else
514# define CRASH_KERNEL_ADDR_LOW_MAX (896UL<<20)
515# define CRASH_KERNEL_ADDR_HIGH_MAX MAXMEM
516#endif
517
518static void __init reserve_crashkernel_low(void)
519{
520#ifdef CONFIG_X86_64
521 const unsigned long long alignment = 16<<20;
522 unsigned long long low_base = 0, low_size = 0;
523 unsigned long total_low_mem;
524 unsigned long long base;
525 bool auto_set = false;
526 int ret;
527
528 total_low_mem = memblock_mem_size(1UL<<(32-PAGE_SHIFT));
529
530 ret = parse_crashkernel_low(boot_command_line, total_low_mem,
531 &low_size, &base);
532 if (ret != 0) {
533
534
535
536
537
538
539
540 low_size = swiotlb_size_or_default() + (8UL<<20);
541 auto_set = true;
542 } else {
543
544 if (!low_size)
545 return;
546 }
547
548 low_base = memblock_find_in_range(low_size, (1ULL<<32),
549 low_size, alignment);
550
551 if (!low_base) {
552 if (!auto_set)
553 pr_info("crashkernel low reservation failed - No suitable area found.\n");
554
555 return;
556 }
557
558 memblock_reserve(low_base, low_size);
559 pr_info("Reserving %ldMB of low memory at %ldMB for crashkernel (System low RAM: %ldMB)\n",
560 (unsigned long)(low_size >> 20),
561 (unsigned long)(low_base >> 20),
562 (unsigned long)(total_low_mem >> 20));
563 crashk_low_res.start = low_base;
564 crashk_low_res.end = low_base + low_size - 1;
565 insert_resource(&iomem_resource, &crashk_low_res);
566#endif
567}
568
569static void __init reserve_crashkernel(void)
570{
571 const unsigned long long alignment = 16<<20;
572 unsigned long long total_mem;
573 unsigned long long crash_size, crash_base;
574 bool high = false;
575 int ret;
576
577 total_mem = memblock_phys_mem_size();
578
579
580 ret = parse_crashkernel(boot_command_line, total_mem,
581 &crash_size, &crash_base);
582 if (ret != 0 || crash_size <= 0) {
583
584 ret = parse_crashkernel_high(boot_command_line, total_mem,
585 &crash_size, &crash_base);
586 if (ret != 0 || crash_size <= 0)
587 return;
588 high = true;
589 }
590
591
592 if (crash_base <= 0) {
593
594
595
596 crash_base = memblock_find_in_range(alignment,
597 high ? CRASH_KERNEL_ADDR_HIGH_MAX :
598 CRASH_KERNEL_ADDR_LOW_MAX,
599 crash_size, alignment);
600
601 if (!crash_base) {
602 pr_info("crashkernel reservation failed - No suitable area found.\n");
603 return;
604 }
605
606 } else {
607 unsigned long long start;
608
609 start = memblock_find_in_range(crash_base,
610 crash_base + crash_size, crash_size, 1<<20);
611 if (start != crash_base) {
612 pr_info("crashkernel reservation failed - memory is in use.\n");
613 return;
614 }
615 }
616 memblock_reserve(crash_base, crash_size);
617
618 printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
619 "for crashkernel (System RAM: %ldMB)\n",
620 (unsigned long)(crash_size >> 20),
621 (unsigned long)(crash_base >> 20),
622 (unsigned long)(total_mem >> 20));
623
624 crashk_res.start = crash_base;
625 crashk_res.end = crash_base + crash_size - 1;
626 insert_resource(&iomem_resource, &crashk_res);
627
628 if (crash_base >= (1ULL<<32))
629 reserve_crashkernel_low();
630}
631#else
632static void __init reserve_crashkernel(void)
633{
634}
635#endif
636
637static struct resource standard_io_resources[] = {
638 { .name = "dma1", .start = 0x00, .end = 0x1f,
639 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
640 { .name = "pic1", .start = 0x20, .end = 0x21,
641 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
642 { .name = "timer0", .start = 0x40, .end = 0x43,
643 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
644 { .name = "timer1", .start = 0x50, .end = 0x53,
645 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
646 { .name = "keyboard", .start = 0x60, .end = 0x60,
647 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
648 { .name = "keyboard", .start = 0x64, .end = 0x64,
649 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
650 { .name = "dma page reg", .start = 0x80, .end = 0x8f,
651 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
652 { .name = "pic2", .start = 0xa0, .end = 0xa1,
653 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
654 { .name = "dma2", .start = 0xc0, .end = 0xdf,
655 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
656 { .name = "fpu", .start = 0xf0, .end = 0xff,
657 .flags = IORESOURCE_BUSY | IORESOURCE_IO }
658};
659
660void __init reserve_standard_io_resources(void)
661{
662 int i;
663
664
665 for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
666 request_resource(&ioport_resource, &standard_io_resources[i]);
667
668}
669
670static __init void reserve_ibft_region(void)
671{
672 unsigned long addr, size = 0;
673
674 addr = find_ibft_region(&size);
675
676 if (size)
677 memblock_reserve(addr, size);
678}
679
680static bool __init snb_gfx_workaround_needed(void)
681{
682#ifdef CONFIG_PCI
683 int i;
684 u16 vendor, devid;
685 static const __initconst u16 snb_ids[] = {
686 0x0102,
687 0x0112,
688 0x0122,
689 0x0106,
690 0x0116,
691 0x0126,
692 0x010a,
693 };
694
695
696 if (!early_pci_allowed())
697 return false;
698
699 vendor = read_pci_config_16(0, 2, 0, PCI_VENDOR_ID);
700 if (vendor != 0x8086)
701 return false;
702
703 devid = read_pci_config_16(0, 2, 0, PCI_DEVICE_ID);
704 for (i = 0; i < ARRAY_SIZE(snb_ids); i++)
705 if (devid == snb_ids[i])
706 return true;
707#endif
708
709 return false;
710}
711
712
713
714
715
716static void __init trim_snb_memory(void)
717{
718 static const __initconst unsigned long bad_pages[] = {
719 0x20050000,
720 0x20110000,
721 0x20130000,
722 0x20138000,
723 0x40004000,
724 };
725 int i;
726
727 if (!snb_gfx_workaround_needed())
728 return;
729
730 printk(KERN_DEBUG "reserving inaccessible SNB gfx pages\n");
731
732
733
734
735
736 memblock_reserve(0, 1<<20);
737
738 for (i = 0; i < ARRAY_SIZE(bad_pages); i++) {
739 if (memblock_reserve(bad_pages[i], PAGE_SIZE))
740 printk(KERN_WARNING "failed to reserve 0x%08lx\n",
741 bad_pages[i]);
742 }
743}
744
745
746
747
748
749
750
751
752static void __init trim_platform_memory_ranges(void)
753{
754 trim_snb_memory();
755}
756
757static void __init trim_bios_range(void)
758{
759
760
761
762
763
764
765
766
767
768 e820_update_range(0, PAGE_SIZE, E820_RAM, E820_RESERVED);
769
770
771
772
773
774
775 e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
776
777 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
778}
779
780
781static void __init e820_add_kernel_range(void)
782{
783 u64 start = __pa_symbol(_text);
784 u64 size = __pa_symbol(_end) - start;
785
786
787
788
789
790
791
792
793 if (e820_all_mapped(start, start + size, E820_RAM))
794 return;
795
796 pr_warn(".text .data .bss are not marked as E820_RAM!\n");
797 e820_remove_range(start, size, E820_RAM, 0);
798 e820_add_region(start, size, E820_RAM);
799}
800
801static unsigned reserve_low = CONFIG_X86_RESERVE_LOW << 10;
802
803static int __init parse_reservelow(char *p)
804{
805 unsigned long long size;
806
807 if (!p)
808 return -EINVAL;
809
810 size = memparse(p, &p);
811
812 if (size < 4096)
813 size = 4096;
814
815 if (size > 640*1024)
816 size = 640*1024;
817
818 reserve_low = size;
819
820 return 0;
821}
822
823early_param("reservelow", parse_reservelow);
824
825static void __init trim_low_memory_range(void)
826{
827 memblock_reserve(0, ALIGN(reserve_low, PAGE_SIZE));
828}
829
830
831
832
833static int
834dump_kernel_offset(struct notifier_block *self, unsigned long v, void *p)
835{
836 pr_emerg("Kernel Offset: 0x%lx from 0x%lx "
837 "(relocation range: 0x%lx-0x%lx)\n",
838 (unsigned long)&_text - __START_KERNEL, __START_KERNEL,
839 __START_KERNEL_map, MODULES_VADDR-1);
840
841 return 0;
842}
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857void __init setup_arch(char **cmdline_p)
858{
859 memblock_reserve(__pa_symbol(_text),
860 (unsigned long)__bss_stop - (unsigned long)_text);
861
862 early_reserve_initrd();
863
864
865
866
867
868
869
870#ifdef CONFIG_X86_32
871 memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
872 visws_early_detect();
873
874
875
876
877
878 clone_pgd_range(swapper_pg_dir + KERNEL_PGD_BOUNDARY,
879 initial_page_table + KERNEL_PGD_BOUNDARY,
880 KERNEL_PGD_PTRS);
881
882 load_cr3(swapper_pg_dir);
883 __flush_tlb_all();
884#else
885 printk(KERN_INFO "Command line: %s\n", boot_command_line);
886#endif
887
888
889
890
891
892 olpc_ofw_detect();
893
894 early_trap_init();
895 early_cpu_init();
896 early_ioremap_init();
897
898 setup_olpc_ofw_pgd();
899
900 ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev);
901 screen_info = boot_params.screen_info;
902 edid_info = boot_params.edid_info;
903#ifdef CONFIG_X86_32
904 apm_info.bios = boot_params.apm_bios_info;
905 ist_info = boot_params.ist_info;
906 if (boot_params.sys_desc_table.length != 0) {
907 machine_id = boot_params.sys_desc_table.table[0];
908 machine_submodel_id = boot_params.sys_desc_table.table[1];
909 BIOS_revision = boot_params.sys_desc_table.table[2];
910 }
911#endif
912 saved_video_mode = boot_params.hdr.vid_mode;
913 bootloader_type = boot_params.hdr.type_of_loader;
914 if ((bootloader_type >> 4) == 0xe) {
915 bootloader_type &= 0xf;
916 bootloader_type |= (boot_params.hdr.ext_loader_type+0x10) << 4;
917 }
918 bootloader_version = bootloader_type & 0xf;
919 bootloader_version |= boot_params.hdr.ext_loader_ver << 4;
920
921#ifdef CONFIG_BLK_DEV_RAM
922 rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK;
923 rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0);
924 rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0);
925#endif
926#ifdef CONFIG_EFI
927 if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
928 "EL32", 4)) {
929 set_bit(EFI_BOOT, &x86_efi_facility);
930 } else if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
931 "EL64", 4)) {
932 set_bit(EFI_BOOT, &x86_efi_facility);
933 set_bit(EFI_64BIT, &x86_efi_facility);
934 }
935
936 if (efi_enabled(EFI_BOOT))
937 efi_memblock_x86_reserve_range();
938#endif
939
940 x86_init.oem.arch_setup();
941
942 iomem_resource.end = (1ULL << boot_cpu_data.x86_phys_bits) - 1;
943 setup_memory_map();
944 parse_setup_data();
945
946 copy_edd();
947
948 if (!boot_params.hdr.root_flags)
949 root_mountflags &= ~MS_RDONLY;
950 init_mm.start_code = (unsigned long) _text;
951 init_mm.end_code = (unsigned long) _etext;
952 init_mm.end_data = (unsigned long) _edata;
953 init_mm.brk = _brk_end;
954
955 code_resource.start = __pa_symbol(_text);
956 code_resource.end = __pa_symbol(_etext)-1;
957 data_resource.start = __pa_symbol(_etext);
958 data_resource.end = __pa_symbol(_edata)-1;
959 bss_resource.start = __pa_symbol(__bss_start);
960 bss_resource.end = __pa_symbol(__bss_stop)-1;
961
962#ifdef CONFIG_CMDLINE_BOOL
963#ifdef CONFIG_CMDLINE_OVERRIDE
964 strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
965#else
966 if (builtin_cmdline[0]) {
967
968 strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE);
969 strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE);
970 strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
971 }
972#endif
973#endif
974
975 strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
976 *cmdline_p = command_line;
977
978
979
980
981
982
983
984
985 x86_configure_nx();
986
987 parse_early_param();
988
989 x86_report_nx();
990
991
992 memblock_x86_reserve_range_setup_data();
993
994 if (acpi_mps_check()) {
995#ifdef CONFIG_X86_LOCAL_APIC
996 disable_apic = 1;
997#endif
998 setup_clear_cpu_cap(X86_FEATURE_APIC);
999 }
1000
1001#ifdef CONFIG_PCI
1002 if (pci_early_dump_regs)
1003 early_dump_pci_devices();
1004#endif
1005
1006
1007 e820_reserve_setup_data();
1008 finish_e820_parsing();
1009
1010 if (efi_enabled(EFI_BOOT))
1011 efi_init();
1012
1013 dmi_scan_machine();
1014 dmi_memdev_walk();
1015 dmi_set_dump_stack_arch_desc();
1016
1017
1018
1019
1020
1021 init_hypervisor_platform();
1022
1023 x86_init.resources.probe_roms();
1024
1025
1026 insert_resource(&iomem_resource, &code_resource);
1027 insert_resource(&iomem_resource, &data_resource);
1028 insert_resource(&iomem_resource, &bss_resource);
1029
1030 e820_add_kernel_range();
1031 trim_bios_range();
1032#ifdef CONFIG_X86_32
1033 if (ppro_with_ram_bug()) {
1034 e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
1035 E820_RESERVED);
1036 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
1037 printk(KERN_INFO "fixed physical RAM map:\n");
1038 e820_print_map("bad_ppro");
1039 }
1040#else
1041 early_gart_iommu_check();
1042#endif
1043
1044
1045
1046
1047
1048 max_pfn = e820_end_of_ram_pfn();
1049
1050
1051 mtrr_bp_init();
1052 if (mtrr_trim_uncached_memory(max_pfn))
1053 max_pfn = e820_end_of_ram_pfn();
1054
1055#ifdef CONFIG_X86_32
1056
1057 find_low_pfn_range();
1058#else
1059 check_x2apic();
1060
1061
1062
1063 if (max_pfn > (1UL<<(32 - PAGE_SHIFT)))
1064 max_low_pfn = e820_end_of_low_ram_pfn();
1065 else
1066 max_low_pfn = max_pfn;
1067
1068 high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
1069#endif
1070
1071
1072
1073
1074 find_smp_config();
1075
1076 reserve_ibft_region();
1077
1078 early_alloc_pgt_buf();
1079
1080
1081
1082
1083
1084
1085 reserve_brk();
1086
1087 cleanup_highmap();
1088
1089 memblock_set_current_limit(ISA_END_ADDRESS);
1090 memblock_x86_fill();
1091
1092
1093
1094
1095
1096 if (efi_enabled(EFI_MEMMAP))
1097 efi_reserve_boot_services();
1098
1099
1100 early_reserve_e820_mpc_new();
1101
1102#ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION
1103 setup_bios_corruption_check();
1104#endif
1105
1106#ifdef CONFIG_X86_32
1107 printk(KERN_DEBUG "initial memory mapped: [mem 0x00000000-%#010lx]\n",
1108 (max_pfn_mapped<<PAGE_SHIFT) - 1);
1109#endif
1110
1111 reserve_real_mode();
1112
1113 trim_platform_memory_ranges();
1114 trim_low_memory_range();
1115
1116 init_mem_mapping();
1117
1118 early_trap_pf_init();
1119
1120 setup_real_mode();
1121
1122 memblock_set_current_limit(get_max_mapped());
1123 dma_contiguous_reserve(0);
1124
1125
1126
1127
1128
1129#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
1130 if (init_ohci1394_dma_early)
1131 init_ohci1394_dma_on_all_controllers();
1132#endif
1133
1134 setup_log_buf(1);
1135
1136 reserve_initrd();
1137
1138#if defined(CONFIG_ACPI) && defined(CONFIG_BLK_DEV_INITRD)
1139 acpi_initrd_override((void *)initrd_start, initrd_end - initrd_start);
1140#endif
1141
1142 vsmp_init();
1143
1144 io_delay_init();
1145
1146
1147
1148
1149 acpi_boot_table_init();
1150
1151 early_acpi_boot_init();
1152
1153 initmem_init();
1154
1155
1156
1157
1158
1159 reserve_crashkernel();
1160
1161 memblock_find_dma_reserve();
1162
1163#ifdef CONFIG_KVM_GUEST
1164 kvmclock_init();
1165#endif
1166
1167 x86_init.paging.pagetable_init();
1168
1169 if (boot_cpu_data.cpuid_level >= 0) {
1170
1171 mmu_cr4_features = read_cr4();
1172 if (trampoline_cr4_features)
1173 *trampoline_cr4_features = mmu_cr4_features;
1174 }
1175
1176#ifdef CONFIG_X86_32
1177
1178 clone_pgd_range(initial_page_table + KERNEL_PGD_BOUNDARY,
1179 swapper_pg_dir + KERNEL_PGD_BOUNDARY,
1180 KERNEL_PGD_PTRS);
1181#endif
1182
1183 tboot_probe();
1184
1185#ifdef CONFIG_X86_64
1186 map_vsyscall();
1187#endif
1188
1189 generic_apic_probe();
1190
1191 early_quirks();
1192
1193
1194
1195
1196 acpi_boot_init();
1197 sfi_init();
1198 x86_dtb_init();
1199
1200
1201
1202
1203 if (smp_found_config)
1204 get_smp_config();
1205
1206 prefill_possible_map();
1207
1208 init_cpu_to_node();
1209
1210 init_apic_mappings();
1211 if (x86_io_apic_ops.init)
1212 x86_io_apic_ops.init();
1213
1214 kvm_guest_init();
1215
1216 e820_reserve_resources();
1217 e820_mark_nosave_regions(max_low_pfn);
1218
1219 x86_init.resources.reserve_resources();
1220
1221 e820_setup_gap();
1222
1223#ifdef CONFIG_VT
1224#if defined(CONFIG_VGA_CONSOLE)
1225 if (!efi_enabled(EFI_BOOT) || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
1226 conswitchp = &vga_con;
1227#elif defined(CONFIG_DUMMY_CONSOLE)
1228 conswitchp = &dummy_con;
1229#endif
1230#endif
1231 x86_init.oem.banner();
1232
1233 x86_init.timers.wallclock_init();
1234
1235 mcheck_init();
1236
1237 arch_init_ideal_nops();
1238
1239 register_refined_jiffies(CLOCK_TICK_RATE);
1240
1241#ifdef CONFIG_EFI
1242 if (efi_enabled(EFI_BOOT))
1243 efi_apply_memmap_quirks();
1244#endif
1245}
1246
1247#ifdef CONFIG_X86_32
1248
1249static struct resource video_ram_resource = {
1250 .name = "Video RAM area",
1251 .start = 0xa0000,
1252 .end = 0xbffff,
1253 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
1254};
1255
1256void __init i386_reserve_resources(void)
1257{
1258 request_resource(&iomem_resource, &video_ram_resource);
1259 reserve_standard_io_resources();
1260}
1261
1262#endif
1263
1264static struct notifier_block kernel_offset_notifier = {
1265 .notifier_call = dump_kernel_offset
1266};
1267
1268static int __init register_kernel_offset_dumper(void)
1269{
1270 atomic_notifier_chain_register(&panic_notifier_list,
1271 &kernel_offset_notifier);
1272 return 0;
1273}
1274__initcall(register_kernel_offset_dumper);
1275