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x86: move parse_setup_data back to setup.c
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / x86 / kernel / setup.c
CommitLineData
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
122struct boot_params __initdata boot_params;
123#else
124struct 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 130unsigned long init_pg_tables_start __initdata = ~0UL;
1da177e4
LT		 131unsigned long init_pg_tables_end __initdata = ~0UL;
132
1da177e4
LT		 133/*
134 * Machine setup..
135 */
c9cce83d
BW		 136static struct resource data_resource = {
137 .name = "Kernel data",
138 .start = 0,
139 .end = 0,
140 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
141};
142
143static struct resource code_resource = {
144 .name = "Kernel code",
145 .start = 0,
146 .end = 0,
147 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
148};
149
150static 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		 159static 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 167struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1};
1da177e4 168/* common cpu data for all cpus */
7dea23ec 169struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1};
129f6946 170EXPORT_SYMBOL(boot_cpu_data);
7dea23ec
YL		 171static void set_mca_bus(int x)
172{
173#ifdef CONFIG_MCA
174 MCA_bus = x;
175#endif
176}
1da177e4 177
0c254e38
AS		 178unsigned int def_to_bigsmp;
179
1da177e4
LT		 180/* for MCA, but anyone else can use it if they want */
181unsigned int machine_id;
182unsigned int machine_submodel_id;
183unsigned int BIOS_revision;
1da177e4 184
7dea23ec
YL		 185struct apm_info apm_info;
186EXPORT_SYMBOL(apm_info);
187
188#if defined(CONFIG_X86_SPEEDSTEP_SMI) || \
189 defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
190struct ist_info ist_info;
191EXPORT_SYMBOL(ist_info);
192#else
193struct ist_info ist_info;
194#endif
195
196#else
197struct cpuinfo_x86 boot_cpu_data __read_mostly;
198EXPORT_SYMBOL(boot_cpu_data);
199#endif
200
201
202#if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
203unsigned long mmu_cr4_features;
204#else
205unsigned 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 */
209int bootloader_type;
210
1c6e5503
YL		 211/*
212 * Early DMI memory
213 */
214int dmi_alloc_index;
215char dmi_alloc_data[DMI_MAX_DATA];
216
1da177e4
LT		 217/*
218 * Setup options
219 */
1da177e4 220struct screen_info screen_info;
129f6946 221EXPORT_SYMBOL(screen_info);
1da177e4 222struct edid_info edid_info;
5e518d76 223EXPORT_SYMBOL_GPL(edid_info);
1da177e4 224
1da177e4
LT		 225extern int root_mountflags;
226
e44b7b75 227unsigned 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 233static char __initdata command_line[COMMAND_LINE_SIZE];
1da177e4 234
1da177e4
LT		 235#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
236struct edd edd;
237#ifdef CONFIG_EDD_MODULE
238EXPORT_SYMBOL(edd);
239#endif
240/**
241 * copy_edd() - Copy the BIOS EDD information
242 * from boot_params into a safe place.
243 *
244 */
245static 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
254static 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)
264static 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		 327static 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 373static void __init reserve_initrd(void)
225c37d7
YL		 374{
375}
cf8fa920
PA		 376#endif /* CONFIG_BLK_DEV_INITRD */
377
257b0fde
YL		 378void __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
1da177e4
LT		 403/*
404 * Determine if we were loaded by an EFI loader. If so, then we have also been
405 * passed the efi memmap, systab, etc., so we should use these data structures
406 * for initialization. Note, the efi init code path is determined by the
407 * global efi_enabled. This allows the same kernel image to be used on existing
408 * systems (with a traditional BIOS) as well as on EFI systems.
409 */
76934ed4
YL		 410/*
411 * setup_arch - architecture-specific boot-time initializations
412 *
413 * Note: On x86_64, fixmaps are ready for use even before this is called.
414 */
415
1da177e4
LT		 416void __init setup_arch(char **cmdline_p)
417{
76934ed4 418#ifdef CONFIG_X86_32
1da177e4
LT		 419 memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
420 pre_setup_arch_hook();
421 early_cpu_init();
beacfaac 422 early_ioremap_init();
c45a707d 423 reserve_setup_data();
76934ed4
YL		 424#else
425 printk(KERN_INFO "Command line: %s\n", boot_command_line);
426#endif
1da177e4 427
30c82645
PA		 428 ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev);
429 screen_info = boot_params.screen_info;
430 edid_info = boot_params.edid_info;
76934ed4 431#ifdef CONFIG_X86_32
30c82645
PA		 432 apm_info.bios = boot_params.apm_bios_info;
433 ist_info = boot_params.ist_info;
76934ed4 434 if (boot_params.sys_desc_table.length != 0) {
30c82645
PA		 435 set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2);
436 machine_id = boot_params.sys_desc_table.table[0];
437 machine_submodel_id = boot_params.sys_desc_table.table[1];
438 BIOS_revision = boot_params.sys_desc_table.table[2];
1da177e4 439 }
76934ed4
YL		 440#endif
441 saved_video_mode = boot_params.hdr.vid_mode;
30c82645 442 bootloader_type = boot_params.hdr.type_of_loader;
1da177e4
LT		 443
444#ifdef CONFIG_BLK_DEV_RAM
30c82645
PA		 445 rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK;
446 rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0);
447 rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0);
1da177e4 448#endif
7465252e
YL		 449#ifdef CONFIG_EFI
450 if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
76934ed4
YL		 451#ifdef CONFIG_X86_32
452 "EL32",
453#else
454 "EL64",
455#endif
456 4)) {
7465252e
YL		 457 efi_enabled = 1;
458 efi_reserve_early();
459 }
460#endif
461
1da177e4 462 ARCH_SETUP
2215e69d 463
0dbfafa5 464 setup_memory_map();
1da177e4
LT		 465 copy_edd();
466
30c82645 467 if (!boot_params.hdr.root_flags)
1da177e4
LT		 468 root_mountflags &= ~MS_RDONLY;
469 init_mm.start_code = (unsigned long) _text;
470 init_mm.end_code = (unsigned long) _etext;
471 init_mm.end_data = (unsigned long) _edata;
76934ed4 472#ifdef CONFIG_X86_32
1da177e4 473 init_mm.brk = init_pg_tables_end + PAGE_OFFSET;
76934ed4
YL		 474#else
475 init_mm.brk = (unsigned long) &_end;
476#endif
1da177e4
LT		 477
478 code_resource.start = virt_to_phys(_text);
479 code_resource.end = virt_to_phys(_etext)-1;
480 data_resource.start = virt_to_phys(_etext);
481 data_resource.end = virt_to_phys(_edata)-1;
00bf4098
BW		 482 bss_resource.start = virt_to_phys(&__bss_start);
483 bss_resource.end = virt_to_phys(&__bss_stop)-1;
1da177e4 484
76934ed4
YL		 485#ifdef CONFIG_X86_64
486 early_cpu_init();
487#endif
9a2e5930
YL		 488 strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
489 *cmdline_p = command_line;
490
c45a707d
HY		 491 parse_setup_data();
492
1a3f239d 493 parse_early_param();
1da177e4 494
76934ed4 495 if (acpi_mps_check()) {
3eb11edc 496#ifdef CONFIG_X86_LOCAL_APIC
76934ed4 497#ifdef CONFIG_X86_32
3c999f14 498 enable_local_apic = -1;
76934ed4
YL		 499#else
500 disable_apic = 1;
501#endif
3eb11edc 502#endif
3c999f14
YL		 503 clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
504 }
505
0dbfafa5 506 finish_e820_parsing();
1a3f239d 507
76934ed4 508#ifdef CONFIG_X86_32
41c094fd 509 probe_roms();
76934ed4
YL		 510#else
511# ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
512 if (init_ohci1394_dma_early)
513 init_ohci1394_dma_on_all_controllers();
514# endif
515#endif
41c094fd
YL		 516
517 /* after parse_early_param, so could debug it */
518 insert_resource(&iomem_resource, &code_resource);
519 insert_resource(&iomem_resource, &data_resource);
520 insert_resource(&iomem_resource, &bss_resource);
521
8b2cb7a8
HY		 522 if (efi_enabled)
523 efi_init();
524
76934ed4 525#ifdef CONFIG_X86_32
cc9f7a0c
YL		 526 if (ppro_with_ram_bug()) {
527 e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
528 E820_RESERVED);
529 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
530 printk(KERN_INFO "fixed physical RAM map:\n");
531 e820_print_map("bad_ppro");
532 }
76934ed4
YL		 533#else
534 early_gart_iommu_check();
535#endif
cc9f7a0c 536
7b2a0a6c
YL		 537 e820_register_active_regions(0, 0, -1UL);
538 /*
539 * partially used pages are not usable - thus
540 * we are rounding upwards:
541 */
542 max_pfn = e820_end_of_ram();
543
6780711e
YL		 544 /* preallocate 4k for mptable mpc */
545 early_reserve_e820_mpc_new();
093af8d7
YL		 546 /* update e820 for memory not covered by WB MTRRs */
547 mtrr_bp_init();
7b2a0a6c
YL		 548 if (mtrr_trim_uncached_memory(max_pfn)) {
549 remove_all_active_ranges();
550 e820_register_active_regions(0, 0, -1UL);
551 max_pfn = e820_end_of_ram();
552 }
76c32418 553
76934ed4 554#ifdef CONFIG_X86_32
4e29684c 555 /* max_low_pfn get updated here */
2ec65f8b 556 find_low_pfn_range();
76934ed4
YL		 557#else
558 num_physpages = max_pfn;
559
560 check_efer();
561
562 /* How many end-of-memory variables you have, grandma! */
563 /* need this before calling reserve_initrd */
564 max_low_pfn = max_pfn;
565 high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
566#endif
2ec65f8b 567
4e29684c 568 /* max_pfn_mapped is updated here */
b9d19f4a 569 max_pfn_mapped = init_memory_mapping(0, (max_low_pfn << PAGE_SHIFT));
4e29684c 570
2ec65f8b
YL		 571 reserve_initrd();
572
76934ed4
YL		 573#ifdef CONFIG_X86_64
574 vsmp_init();
575#endif
576
1c6e5503
YL		 577 dmi_scan_machine();
578
579 io_delay_init();
580
1c6e5503
YL		 581 /*
582 * Parse the ACPI tables for possible boot-time SMP configuration.
583 */
584 acpi_boot_table_init();
1c6e5503 585
76934ed4
YL		 586#ifdef CONFIG_X86_64
587 /* Remove active ranges so rediscovery with NUMA-awareness happens */
588 remove_all_active_ranges();
589#endif
590
1c6e5503 591#ifdef CONFIG_ACPI_NUMA
f2f865fe
YL		 592 /*
593 * Parse SRAT to discover nodes.
594 */
595 acpi_numa_init();
1c6e5503
YL		 596#endif
597
2ec65f8b 598 initmem_init(0, max_pfn);
093af8d7 599
76934ed4
YL		 600#ifdef CONFIG_X86_64
601 dma32_reserve_bootmem();
602#endif
603
593a0cc3
YL		 604#ifdef CONFIG_ACPI_SLEEP
605 /*
606 * Reserve low memory region for sleep support.
607 */
608 acpi_reserve_bootmem();
609#endif
76934ed4
YL		 610#if defined(CONFIG_X86_FIND_SMP_CONFIG) && defined(CONFIG_X86_32) || \
611 defined(CONFIG_X86_MPPARSE) && defined(CONFIG_X86_64)
593a0cc3
YL		 612 /*
613 * Find and reserve possible boot-time SMP configuration:
614 */
615 find_smp_config();
616#endif
617 reserve_crashkernel();
618
619 reserve_ibft_region();
620
790c73f6
GOC		 621#ifdef CONFIG_KVM_CLOCK
622 kvmclock_init();
623#endif
624
76934ed4 625#if defined(CONFIG_VMI) && defined(CONFIG_X86_32)
7ce0bcfd
ZA		 626 /*
627 * Must be after max_low_pfn is determined, and before kernel
628 * pagetables are setup.
629 */
630 vmi_init();
631#endif
1da177e4 632
1da177e4 633 paging_init();
f212ec4b 634
76934ed4
YL		 635#ifdef CONFIG_X86_64
636 map_vsyscall();
637#endif
638
f212ec4b
BK		 639 /*
640 * NOTE: On x86-32, only from this point on, fixmaps are ready for use.
641 */
642
76934ed4 643#if defined(CONFIG_PROVIDE_OHCI1394_DMA_INIT) && defined(CONFIG_X86_32)
f212ec4b
BK		 644 if (init_ohci1394_dma_early)
645 init_ohci1394_dma_on_all_controllers();
646#endif
647
1da177e4 648#ifdef CONFIG_X86_GENERICARCH
1a3f239d 649 generic_apic_probe();
cf8fa920 650#endif
1da177e4 651
54ef3400 652 early_quirks();
d44647b0 653
295deae4
YL		 654 /*
655 * Read APIC and some other early information from ACPI tables.
656 */
1da177e4 657 acpi_boot_init();
04606618 658
76934ed4
YL		 659#ifdef CONFIG_X86_64
660 init_cpu_to_node();
661#endif
662
e0da3364 663#if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS)
295deae4
YL		 664 /*
665 * get boot-time SMP configuration:
666 */
e0da3364
YL		 667 if (smp_found_config)
668 get_smp_config();
669#endif
76934ed4
YL		 670
671#ifdef CONFIG_X86_64
672 init_apic_mappings();
673 ioapic_init_mappings();
674#else
675# if defined(CONFIG_SMP) && defined(CONFIG_X86_PC)
911a62d4
VP		 676 if (def_to_bigsmp)
677 printk(KERN_WARNING "More than 8 CPUs detected and "
678 "CONFIG_X86_PC cannot handle it.\nUse "
679 "CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
76934ed4 680# endif
911a62d4 681#endif
295deae4 682 kvm_guest_init();
1da177e4 683
41c094fd 684 e820_reserve_resources();
bf62f398 685 e820_mark_nosave_regions(max_low_pfn);
1da177e4 686
76934ed4 687#ifdef CONFIG_X86_32
41c094fd 688 request_resource(&iomem_resource, &video_ram_resource);
76934ed4 689#endif
ce97c40e 690 reserve_standard_io_resources();
41c094fd
YL		 691
692 e820_setup_gap();
693
1da177e4
LT		 694#ifdef CONFIG_VT
695#if defined(CONFIG_VGA_CONSOLE)
696 if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
697 conswitchp = &vga_con;
698#elif defined(CONFIG_DUMMY_CONSOLE)
699 conswitchp = &dummy_con;
700#endif
701#endif
702}
c9cce83d 703
kernel source for telekom puls (alcatel/mediatek)