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x86: move init_cpu_to_node after get_smp_config
[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>
46d671b5 104#include <asm/paravirt.h>
46d671b5
YL		 105
106#include <asm/percpu.h>
107#include <asm/sections.h>
108#include <asm/topology.h>
109#include <asm/apicdef.h>
55f26239
YL		 110#ifdef CONFIG_X86_64
111#include <asm/numa_64.h>
112#endif
46d671b5 113
042623bb
YL		 114#ifndef ARCH_SETUP
115#define ARCH_SETUP
116#endif
117
217b8ce8
YL		 118#ifndef CONFIG_DEBUG_BOOT_PARAMS
119struct boot_params __initdata boot_params;
120#else
121struct boot_params boot_params;
122#endif
123
1da177e4
LT		 124/*
125 * Machine setup..
126 */
c9cce83d
BW		 127static struct resource data_resource = {
128 .name = "Kernel data",
129 .start = 0,
130 .end = 0,
131 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
132};
133
134static struct resource code_resource = {
135 .name = "Kernel code",
136 .start = 0,
137 .end = 0,
138 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
139};
140
141static struct resource bss_resource = {
142 .name = "Kernel bss",
143 .start = 0,
144 .end = 0,
145 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
146};
147
7dea23ec
YL		 148
149#ifdef CONFIG_X86_32
5092301c
YL		 150/* This value is set up by the early boot code to point to the value
151 immediately after the boot time page tables. It contains a *physical*
152 address, and must not be in the .bss segment! */
153unsigned long init_pg_tables_start __initdata = ~0UL;
154unsigned long init_pg_tables_end __initdata = ~0UL;
155
c9cce83d
BW		 156static struct resource video_ram_resource = {
157 .name = "Video RAM area",
158 .start = 0xa0000,
159 .end = 0xbffff,
160 .flags = IORESOURCE_BUSY | IORESOURCE_MEM
161};
162
1da177e4 163/* cpu data as detected by the assembly code in head.S */
7dea23ec 164struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1};
1da177e4 165/* common cpu data for all cpus */
7dea23ec 166struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1};
129f6946 167EXPORT_SYMBOL(boot_cpu_data);
7dea23ec
YL		 168static void set_mca_bus(int x)
169{
170#ifdef CONFIG_MCA
171 MCA_bus = x;
172#endif
173}
1da177e4 174
0c254e38
AS		 175unsigned int def_to_bigsmp;
176
1da177e4
LT		 177/* for MCA, but anyone else can use it if they want */
178unsigned int machine_id;
179unsigned int machine_submodel_id;
180unsigned int BIOS_revision;
1da177e4 181
7dea23ec
YL		 182struct apm_info apm_info;
183EXPORT_SYMBOL(apm_info);
184
185#if defined(CONFIG_X86_SPEEDSTEP_SMI) || \
186 defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
187struct ist_info ist_info;
188EXPORT_SYMBOL(ist_info);
189#else
190struct ist_info ist_info;
191#endif
192
193#else
194struct cpuinfo_x86 boot_cpu_data __read_mostly;
195EXPORT_SYMBOL(boot_cpu_data);
196#endif
197
198
199#if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
200unsigned long mmu_cr4_features;
201#else
202unsigned long mmu_cr4_features = X86_CR4_PAE;
203#endif
204
1da177e4
LT		 205/* Boot loader ID as an integer, for the benefit of proc_dointvec */
206int bootloader_type;
207
1c6e5503
YL		 208/*
209 * Early DMI memory
210 */
211int dmi_alloc_index;
212char dmi_alloc_data[DMI_MAX_DATA];
213
1da177e4
LT		 214/*
215 * Setup options
216 */
1da177e4 217struct screen_info screen_info;
129f6946 218EXPORT_SYMBOL(screen_info);
1da177e4 219struct edid_info edid_info;
5e518d76 220EXPORT_SYMBOL_GPL(edid_info);
1da177e4 221
1da177e4
LT		 222extern int root_mountflags;
223
e44b7b75 224unsigned long saved_video_mode;
1da177e4 225
cf8fa920 226#define RAMDISK_IMAGE_START_MASK 0x07FF
1da177e4 227#define RAMDISK_PROMPT_FLAG 0x8000
cf8fa920 228#define RAMDISK_LOAD_FLAG 0x4000
1da177e4 229
4e498b66 230static char __initdata command_line[COMMAND_LINE_SIZE];
1da177e4 231
1da177e4
LT		 232#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
233struct edd edd;
234#ifdef CONFIG_EDD_MODULE
235EXPORT_SYMBOL(edd);
236#endif
237/**
238 * copy_edd() - Copy the BIOS EDD information
239 * from boot_params into a safe place.
240 *
241 */
242static inline void copy_edd(void)
243{
30c82645
PA		 244 memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer,
245 sizeof(edd.mbr_signature));
246 memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info));
247 edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries;
248 edd.edd_info_nr = boot_params.eddbuf_entries;
1da177e4
LT		 249}
250#else
251static inline void copy_edd(void)
252{
253}
254#endif
255
cf8fa920
PA		 256#ifdef CONFIG_BLK_DEV_INITRD
257
eb1379cb 258#ifdef CONFIG_X86_32
cf8fa920 259
eb1379cb
YL		 260#define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT)
261static void __init relocate_initrd(void)
cf8fa920 262{
eb1379cb 263
ba5b14cc
YL		 264 u64 ramdisk_image = boot_params.hdr.ramdisk_image;
265 u64 ramdisk_size = boot_params.hdr.ramdisk_size;
ba5b14cc
YL		 266 u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT;
267 u64 ramdisk_here;
eb1379cb
YL		 268 unsigned long slop, clen, mapaddr;
269 char *p, *q;
cf8fa920
PA		 270
271 /* We need to move the initrd down into lowmem */
4e29684c
YL		 272 ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size,
273 PAGE_SIZE);
cf8fa920 274
3945e2c9
YL		 275 if (ramdisk_here == -1ULL)
276 panic("Cannot find place for new RAMDISK of size %lld\n",
277 ramdisk_size);
278
cf8fa920
PA		 279 /* Note: this includes all the lowmem currently occupied by
280 the initrd, we rely on that fact to keep the data intact. */
3945e2c9 281 reserve_early(ramdisk_here, ramdisk_here + ramdisk_size,
ba5b14cc 282 "NEW RAMDISK");
cf8fa920
PA		 283 initrd_start = ramdisk_here + PAGE_OFFSET;
284 initrd_end = initrd_start + ramdisk_size;
f0d43100
YL		 285 printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n",
286 ramdisk_here, ramdisk_here + ramdisk_size);
cf8fa920 287
cf8fa920
PA		 288 q = (char *)initrd_start;
289
290 /* Copy any lowmem portion of the initrd */
291 if (ramdisk_image < end_of_lowmem) {
292 clen = end_of_lowmem - ramdisk_image;
293 p = (char *)__va(ramdisk_image);
294 memcpy(q, p, clen);
295 q += clen;
296 ramdisk_image += clen;
297 ramdisk_size -= clen;
298 }
299
300 /* Copy the highmem portion of the initrd */
301 while (ramdisk_size) {
302 slop = ramdisk_image & ~PAGE_MASK;
303 clen = ramdisk_size;
304 if (clen > MAX_MAP_CHUNK-slop)
305 clen = MAX_MAP_CHUNK-slop;
306 mapaddr = ramdisk_image & PAGE_MASK;
beacfaac 307 p = early_ioremap(mapaddr, clen+slop);
cf8fa920 308 memcpy(q, p+slop, clen);
beacfaac 309 early_iounmap(p, clen+slop);
cf8fa920
PA		 310 q += clen;
311 ramdisk_image += clen;
312 ramdisk_size -= clen;
313 }
a4c81cf6 314 /* high pages is not converted by early_res_to_bootmem */
ba5b14cc
YL		 315 ramdisk_image = boot_params.hdr.ramdisk_image;
316 ramdisk_size = boot_params.hdr.ramdisk_size;
eb1379cb
YL		 317 printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to"
318 " %08llx - %08llx\n",
ba5b14cc
YL		 319 ramdisk_image, ramdisk_image + ramdisk_size - 1,
320 ramdisk_here, ramdisk_here + ramdisk_size - 1);
eb1379cb
YL		 321}
322#endif
9a27f5c5 323
eb1379cb
YL		 324static void __init reserve_initrd(void)
325{
326 u64 ramdisk_image = boot_params.hdr.ramdisk_image;
327 u64 ramdisk_size = boot_params.hdr.ramdisk_size;
328 u64 ramdisk_end = ramdisk_image + ramdisk_size;
329 u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT;
330
331 if (!boot_params.hdr.type_of_loader ||
332 !ramdisk_image || !ramdisk_size)
333 return; /* No initrd provided by bootloader */
334
335 initrd_start = 0;
336
337 if (ramdisk_size >= (end_of_lowmem>>1)) {
338 free_early(ramdisk_image, ramdisk_end);
339 printk(KERN_ERR "initrd too large to handle, "
340 "disabling initrd\n");
341 return;
342 }
343
344 printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image,
345 ramdisk_end);
346
347
348 if (ramdisk_end <= end_of_lowmem) {
349 /* All in lowmem, easy case */
350 /*
351 * don't need to reserve again, already reserved early
352 * in i386_start_kernel
353 */
354 initrd_start = ramdisk_image + PAGE_OFFSET;
355 initrd_end = initrd_start + ramdisk_size;
356 return;
357 }
358
359#ifdef CONFIG_X86_32
360 relocate_initrd();
361#else
362 printk(KERN_ERR "initrd extends beyond end of memory "
363 "(0x%08llx > 0x%08llx)\ndisabling initrd\n",
364 ramdisk_end, end_of_lowmem);
365 initrd_start = 0;
366#endif
367 free_early(ramdisk_image, ramdisk_end);
cf8fa920 368}
225c37d7 369#else
eb1379cb 370static void __init reserve_initrd(void)
225c37d7
YL		 371{
372}
cf8fa920
PA		 373#endif /* CONFIG_BLK_DEV_INITRD */
374
29f784e3 375static void __init parse_setup_data(void)
257b0fde
YL		 376{
377 struct setup_data *data;
378 u64 pa_data;
379
380 if (boot_params.hdr.version < 0x0209)
381 return;
382 pa_data = boot_params.hdr.setup_data;
383 while (pa_data) {
384 data = early_ioremap(pa_data, PAGE_SIZE);
385 switch (data->type) {
386 case SETUP_E820_EXT:
387 parse_e820_ext(data, pa_data);
388 break;
389 default:
390 break;
391 }
257b0fde
YL		 392 pa_data = data->next;
393 early_iounmap(data, PAGE_SIZE);
394 }
395}
396
28bb2237
YL		 397static void __init reserve_setup_data(void)
398{
399 struct setup_data *data;
400 u64 pa_data;
401 char buf[32];
d9a81b44 402 int found = 0;
28bb2237
YL		 403
404 if (boot_params.hdr.version < 0x0209)
405 return;
406 pa_data = boot_params.hdr.setup_data;
407 while (pa_data) {
408 data = early_ioremap(pa_data, sizeof(*data));
409 sprintf(buf, "setup data %x", data->type);
410 reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf);
411 e820_update_range(pa_data, sizeof(*data)+data->len,
412 E820_RAM, E820_RESERVED_KERN);
d9a81b44 413 found = 1;
28bb2237
YL		 414 pa_data = data->next;
415 early_iounmap(data, sizeof(*data));
416 }
d9a81b44
YL		 417 if (!found)
418 return;
419
28bb2237
YL		 420 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
421 printk(KERN_INFO "extended physical RAM map:\n");
422 e820_print_map("reserve setup_data");
423}
424
ccb4defa
YL		 425/*
426 * --------- Crashkernel reservation ------------------------------
427 */
428
429#ifdef CONFIG_KEXEC
32105f7f
BW		 430
431/**
432 * Reserve @size bytes of crashkernel memory at any suitable offset.
433 *
434 * @size: Size of the crashkernel memory to reserve.
435 * Returns the base address on success, and -1ULL on failure.
436 */
437unsigned long long find_and_reserve_crashkernel(unsigned long long size)
438{
439 const unsigned long long alignment = 16<<20; /* 16M */
440 unsigned long long start = 0LL;
441
442 while (1) {
443 int ret;
444
445 start = find_e820_area(start, ULONG_MAX, size, alignment);
446 if (start == -1ULL)
447 return start;
448
449 /* try to reserve it */
450 ret = reserve_bootmem_generic(start, size, BOOTMEM_EXCLUSIVE);
451 if (ret >= 0)
452 return start;
453
454 start += alignment;
455 }
456}
457
ccb4defa
YL		 458static inline unsigned long long get_total_mem(void)
459{
460 unsigned long long total;
461
462 total = max_low_pfn - min_low_pfn;
463#ifdef CONFIG_HIGHMEM
464 total += highend_pfn - highstart_pfn;
465#endif
466
467 return total << PAGE_SHIFT;
468}
469
29f784e3 470static void __init reserve_crashkernel(void)
ccb4defa
YL		 471{
472 unsigned long long total_mem;
473 unsigned long long crash_size, crash_base;
474 int ret;
475
476 total_mem = get_total_mem();
477
478 ret = parse_crashkernel(boot_command_line, total_mem,
479 &crash_size, &crash_base);
32105f7f
BW		 480 if (ret != 0 || crash_size <= 0)
481 return;
482
483 /* 0 means: find the address automatically */
484 if (crash_base <= 0) {
485 crash_base = find_and_reserve_crashkernel(crash_size);
486 if (crash_base == -1ULL) {
487 pr_info("crashkernel reservation failed. "
488 "No suitable area found.\n");
ccb4defa
YL		 489 return;
490 }
32105f7f
BW		 491 } else {
492 ret = reserve_bootmem_generic(crash_base, crash_size,
493 BOOTMEM_EXCLUSIVE);
494 if (ret < 0) {
495 pr_info("crashkernel reservation failed - "
496 "memory is in use\n");
ccb4defa
YL		 497 return;
498 }
32105f7f 499 }
ccb4defa 500
32105f7f
BW		 501 printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
502 "for crashkernel (System RAM: %ldMB)\n",
503 (unsigned long)(crash_size >> 20),
504 (unsigned long)(crash_base >> 20),
505 (unsigned long)(total_mem >> 20));
ccb4defa 506
32105f7f
BW		 507 crashk_res.start = crash_base;
508 crashk_res.end = crash_base + crash_size - 1;
509 insert_resource(&iomem_resource, &crashk_res);
ccb4defa
YL		 510}
511#else
29f784e3 512static void __init reserve_crashkernel(void)
ccb4defa
YL		 513{
514}
515#endif
516
bdba0e70
YL		 517static struct resource standard_io_resources[] = {
518 { .name = "dma1", .start = 0x00, .end = 0x1f,
519 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
520 { .name = "pic1", .start = 0x20, .end = 0x21,
521 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
522 { .name = "timer0", .start = 0x40, .end = 0x43,
523 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
524 { .name = "timer1", .start = 0x50, .end = 0x53,
525 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
526 { .name = "keyboard", .start = 0x60, .end = 0x60,
527 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
528 { .name = "keyboard", .start = 0x64, .end = 0x64,
529 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
530 { .name = "dma page reg", .start = 0x80, .end = 0x8f,
531 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
532 { .name = "pic2", .start = 0xa0, .end = 0xa1,
533 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
534 { .name = "dma2", .start = 0xc0, .end = 0xdf,
535 .flags = IORESOURCE_BUSY | IORESOURCE_IO },
536 { .name = "fpu", .start = 0xf0, .end = 0xff,
537 .flags = IORESOURCE_BUSY | IORESOURCE_IO }
538};
539
29f784e3 540static void __init reserve_standard_io_resources(void)
bdba0e70
YL		 541{
542 int i;
543
544 /* request I/O space for devices used on all i[345]86 PCs */
545 for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
546 request_resource(&ioport_resource, &standard_io_resources[i]);
547
548}
549
0196bcbb
YL		 550#ifdef CONFIG_PROC_VMCORE
551/* elfcorehdr= specifies the location of elf core header
552 * stored by the crashed kernel. This option will be passed
553 * by kexec loader to the capture kernel.
554 */
555static int __init setup_elfcorehdr(char *arg)
556{
557 char *end;
558 if (!arg)
559 return -EINVAL;
560 elfcorehdr_addr = memparse(arg, &end);
561 return end > arg ? 0 : -EINVAL;
562}
563early_param("elfcorehdr", setup_elfcorehdr);
564#endif
565
1da177e4
LT		 566/*
567 * Determine if we were loaded by an EFI loader. If so, then we have also been
568 * passed the efi memmap, systab, etc., so we should use these data structures
569 * for initialization. Note, the efi init code path is determined by the
570 * global efi_enabled. This allows the same kernel image to be used on existing
571 * systems (with a traditional BIOS) as well as on EFI systems.
572 */
76934ed4
YL		 573/*
574 * setup_arch - architecture-specific boot-time initializations
575 *
576 * Note: On x86_64, fixmaps are ready for use even before this is called.
577 */
578
1da177e4
LT		 579void __init setup_arch(char **cmdline_p)
580{
76934ed4 581#ifdef CONFIG_X86_32
1da177e4
LT		 582 memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
583 pre_setup_arch_hook();
584 early_cpu_init();
76934ed4
YL		 585#else
586 printk(KERN_INFO "Command line: %s\n", boot_command_line);
587#endif
1da177e4 588
1a98fd14
JF		 589 early_ioremap_init();
590
30c82645
PA		 591 ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev);
592 screen_info = boot_params.screen_info;
593 edid_info = boot_params.edid_info;
76934ed4 594#ifdef CONFIG_X86_32
30c82645
PA		 595 apm_info.bios = boot_params.apm_bios_info;
596 ist_info = boot_params.ist_info;
76934ed4 597 if (boot_params.sys_desc_table.length != 0) {
30c82645
PA		 598 set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2);
599 machine_id = boot_params.sys_desc_table.table[0];
600 machine_submodel_id = boot_params.sys_desc_table.table[1];
601 BIOS_revision = boot_params.sys_desc_table.table[2];
1da177e4 602 }
76934ed4
YL		 603#endif
604 saved_video_mode = boot_params.hdr.vid_mode;
30c82645 605 bootloader_type = boot_params.hdr.type_of_loader;
1da177e4
LT		 606
607#ifdef CONFIG_BLK_DEV_RAM
30c82645
PA		 608 rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK;
609 rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0);
610 rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0);
1da177e4 611#endif
7465252e
YL		 612#ifdef CONFIG_EFI
613 if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
76934ed4
YL		 614#ifdef CONFIG_X86_32
615 "EL32",
616#else
617 "EL64",
618#endif
619 4)) {
7465252e
YL		 620 efi_enabled = 1;
621 efi_reserve_early();
622 }
623#endif
624
1da177e4 625 ARCH_SETUP
2215e69d 626
0dbfafa5 627 setup_memory_map();
28bb2237
YL		 628 parse_setup_data();
629
1da177e4
LT		 630 copy_edd();
631
30c82645 632 if (!boot_params.hdr.root_flags)
1da177e4
LT		 633 root_mountflags &= ~MS_RDONLY;
634 init_mm.start_code = (unsigned long) _text;
635 init_mm.end_code = (unsigned long) _etext;
636 init_mm.end_data = (unsigned long) _edata;
76934ed4 637#ifdef CONFIG_X86_32
1da177e4 638 init_mm.brk = init_pg_tables_end + PAGE_OFFSET;
76934ed4
YL		 639#else
640 init_mm.brk = (unsigned long) &_end;
641#endif
1da177e4
LT		 642
643 code_resource.start = virt_to_phys(_text);
644 code_resource.end = virt_to_phys(_etext)-1;
645 data_resource.start = virt_to_phys(_etext);
646 data_resource.end = virt_to_phys(_edata)-1;
00bf4098
BW		 647 bss_resource.start = virt_to_phys(&__bss_start);
648 bss_resource.end = virt_to_phys(&__bss_stop)-1;
1da177e4 649
76934ed4
YL		 650#ifdef CONFIG_X86_64
651 early_cpu_init();
652#endif
9a2e5930
YL		 653 strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
654 *cmdline_p = command_line;
655
1a3f239d 656 parse_early_param();
1da177e4 657
28bb2237
YL		 658 /* after early param, so could get panic from serial */
659 reserve_setup_data();
660
76934ed4 661 if (acpi_mps_check()) {
3eb11edc 662#ifdef CONFIG_X86_LOCAL_APIC
76934ed4 663 disable_apic = 1;
3eb11edc 664#endif
3c999f14
YL		 665 clear_cpu_cap(&boot_cpu_data, X86_FEATURE_APIC);
666 }
667
0dbfafa5 668 finish_e820_parsing();
1a3f239d 669
76934ed4 670#ifdef CONFIG_X86_32
41c094fd 671 probe_roms();
76934ed4 672#endif
41c094fd
YL		 673
674 /* after parse_early_param, so could debug it */
675 insert_resource(&iomem_resource, &code_resource);
676 insert_resource(&iomem_resource, &data_resource);
677 insert_resource(&iomem_resource, &bss_resource);
678
8b2cb7a8
HY		 679 if (efi_enabled)
680 efi_init();
681
76934ed4 682#ifdef CONFIG_X86_32
cc9f7a0c
YL		 683 if (ppro_with_ram_bug()) {
684 e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
685 E820_RESERVED);
686 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
687 printk(KERN_INFO "fixed physical RAM map:\n");
688 e820_print_map("bad_ppro");
689 }
76934ed4
YL		 690#else
691 early_gart_iommu_check();
692#endif
cc9f7a0c 693
7b2a0a6c
YL		 694 e820_register_active_regions(0, 0, -1UL);
695 /*
696 * partially used pages are not usable - thus
697 * we are rounding upwards:
698 */
699 max_pfn = e820_end_of_ram();
700
6780711e
YL		 701 /* preallocate 4k for mptable mpc */
702 early_reserve_e820_mpc_new();
093af8d7
YL		 703 /* update e820 for memory not covered by WB MTRRs */
704 mtrr_bp_init();
7b2a0a6c
YL		 705 if (mtrr_trim_uncached_memory(max_pfn)) {
706 remove_all_active_ranges();
707 e820_register_active_regions(0, 0, -1UL);
708 max_pfn = e820_end_of_ram();
709 }
76c32418 710
76934ed4 711#ifdef CONFIG_X86_32
4e29684c 712 /* max_low_pfn get updated here */
2ec65f8b 713 find_low_pfn_range();
76934ed4
YL		 714#else
715 num_physpages = max_pfn;
716
717 check_efer();
718
719 /* How many end-of-memory variables you have, grandma! */
720 /* need this before calling reserve_initrd */
721 max_low_pfn = max_pfn;
722 high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1;
723#endif
2ec65f8b 724
4e29684c 725 /* max_pfn_mapped is updated here */
b9d19f4a 726 max_pfn_mapped = init_memory_mapping(0, (max_low_pfn << PAGE_SHIFT));
4e29684c 727
e7b37895
YL		 728 /*
729 * NOTE: On x86-32, only from this point on, fixmaps are ready for use.
730 */
731
732#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
733 if (init_ohci1394_dma_early)
734 init_ohci1394_dma_on_all_controllers();
735#endif
736
2ec65f8b
YL		 737 reserve_initrd();
738
76934ed4
YL		 739#ifdef CONFIG_X86_64
740 vsmp_init();
741#endif
742
1c6e5503
YL		 743 dmi_scan_machine();
744
745 io_delay_init();
746
1c6e5503
YL		 747 /*
748 * Parse the ACPI tables for possible boot-time SMP configuration.
749 */
750 acpi_boot_table_init();
1c6e5503 751
76934ed4
YL		 752 /* Remove active ranges so rediscovery with NUMA-awareness happens */
753 remove_all_active_ranges();
76934ed4 754
1c6e5503 755#ifdef CONFIG_ACPI_NUMA
f2f865fe
YL		 756 /*
757 * Parse SRAT to discover nodes.
758 */
759 acpi_numa_init();
1c6e5503
YL		 760#endif
761
2ec65f8b 762 initmem_init(0, max_pfn);
093af8d7 763
76934ed4
YL		 764#ifdef CONFIG_X86_64
765 dma32_reserve_bootmem();
766#endif
767
593a0cc3
YL		 768#ifdef CONFIG_ACPI_SLEEP
769 /*
770 * Reserve low memory region for sleep support.
771 */
772 acpi_reserve_bootmem();
773#endif
d1b20afe 774#ifdef CONFIG_X86_FIND_SMP_CONFIG
593a0cc3
YL		 775 /*
776 * Find and reserve possible boot-time SMP configuration:
777 */
778 find_smp_config();
779#endif
780 reserve_crashkernel();
781
782 reserve_ibft_region();
783
790c73f6
GOC		 784#ifdef CONFIG_KVM_CLOCK
785 kvmclock_init();
786#endif
787
76934ed4 788#if defined(CONFIG_VMI) && defined(CONFIG_X86_32)
7ce0bcfd
ZA		 789 /*
790 * Must be after max_low_pfn is determined, and before kernel
791 * pagetables are setup.
792 */
793 vmi_init();
794#endif
1da177e4 795
1da177e4 796 paging_init();
f212ec4b 797
76934ed4
YL		 798#ifdef CONFIG_X86_64
799 map_vsyscall();
800#endif
801
1da177e4 802#ifdef CONFIG_X86_GENERICARCH
1a3f239d 803 generic_apic_probe();
cf8fa920 804#endif
1da177e4 805
54ef3400 806 early_quirks();
d44647b0 807
295deae4
YL		 808 /*
809 * Read APIC and some other early information from ACPI tables.
810 */
1da177e4 811 acpi_boot_init();
04606618 812
e0da3364 813#if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS)
295deae4
YL		 814 /*
815 * get boot-time SMP configuration:
816 */
e0da3364
YL		 817 if (smp_found_config)
818 get_smp_config();
819#endif
76934ed4 820
5f4765f9
YL		 821#ifdef CONFIG_X86_64
822 init_cpu_to_node();
823#endif
824
76934ed4
YL		 825 init_apic_mappings();
826 ioapic_init_mappings();
f3294a33
YL		 827
828#if defined(CONFIG_SMP) && defined(CONFIG_X86_PC) && defined(CONFIG_X86_32)
911a62d4
VP		 829 if (def_to_bigsmp)
830 printk(KERN_WARNING "More than 8 CPUs detected and "
831 "CONFIG_X86_PC cannot handle it.\nUse "
832 "CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
833#endif
295deae4 834 kvm_guest_init();
1da177e4 835
41c094fd 836 e820_reserve_resources();
bf62f398 837 e820_mark_nosave_regions(max_low_pfn);
1da177e4 838
76934ed4 839#ifdef CONFIG_X86_32
41c094fd 840 request_resource(&iomem_resource, &video_ram_resource);
76934ed4 841#endif
ce97c40e 842 reserve_standard_io_resources();
41c094fd
YL		 843
844 e820_setup_gap();
845
1da177e4
LT		 846#ifdef CONFIG_VT
847#if defined(CONFIG_VGA_CONSOLE)
848 if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
849 conswitchp = &vga_con;
850#elif defined(CONFIG_DUMMY_CONSOLE)
851 conswitchp = &dummy_con;
852#endif
853#endif
854}
kernel source for telekom puls (alcatel/mediatek)