Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Andy Whitcroft | 05b79bd | 2005-06-23 00:07:57 -0700 | [diff] [blame] | 26 | #include <linux/mmzone.h> |
Jon Smirl | 894673e | 2006-07-10 04:44:13 -0700 | [diff] [blame] | 27 | #include <linux/screen_info.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/ioport.h> |
| 29 | #include <linux/acpi.h> |
Feng Tang | efafc8b | 2009-08-14 15:23:29 -0400 | [diff] [blame] | 30 | #include <linux/sfi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Konrad Rzeszutek | 138fe4e | 2008-04-09 19:50:41 -0700 | [diff] [blame] | 43 | #include <linux/iscsi_ibft.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/nodemask.h> |
Eric W. Biederman | 1bc3b91 | 2005-06-25 14:58:01 -0700 | [diff] [blame] | 45 | #include <linux/kexec.h> |
Andi Kleen | e992867 | 2006-01-11 22:43:33 +0100 | [diff] [blame] | 46 | #include <linux/dmi.h> |
Dave Hansen | 22a9835 | 2006-03-27 01:16:04 -0800 | [diff] [blame] | 47 | #include <linux/pfn.h> |
Thomas Gleixner | 376ff03 | 2008-01-30 13:30:16 +0100 | [diff] [blame] | 48 | #include <linux/pci.h> |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 49 | #include <asm/pci-direct.h> |
Bernhard Kaindl | f212ec4 | 2008-01-30 13:34:11 +0100 | [diff] [blame] | 50 | #include <linux/init_ohci1394_dma.h> |
Glauber de Oliveira Costa | 790c73f | 2008-02-15 17:52:48 -0200 | [diff] [blame] | 51 | #include <linux/kvm_para.h> |
Eric W. Biederman | 1bc3b91 | 2005-06-25 14:58:01 -0700 | [diff] [blame] | 52 | |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 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> |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 61 | |
| 62 | #include <linux/kallsyms.h> |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 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> |
Shane Wang | 69575d3 | 2009-09-01 18:25:07 -0700 | [diff] [blame] | 70 | #include <linux/tboot.h> |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #include <video/edid.h> |
Eric W. Biederman | 1bc3b91 | 2005-06-25 14:58:01 -0700 | [diff] [blame] | 73 | |
Yinghai Lu | 093af8d | 2008-01-30 13:33:32 +0100 | [diff] [blame] | 74 | #include <asm/mtrr.h> |
Eric W. Biederman | 9635b47 | 2005-06-25 14:57:41 -0700 | [diff] [blame] | 75 | #include <asm/apic.h> |
Yinghai Lu | 893f38d | 2009-12-10 13:07:22 -0800 | [diff] [blame] | 76 | #include <asm/trampoline.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | #include <asm/e820.h> |
| 78 | #include <asm/mpspec.h> |
| 79 | #include <asm/setup.h> |
Yinghai Lu | 55f2623 | 2008-06-25 17:54:23 -0700 | [diff] [blame] | 80 | #include <asm/efi.h> |
Ingo Molnar | 8e6dafd | 2009-02-23 00:34:39 +0100 | [diff] [blame] | 81 | #include <asm/timer.h> |
| 82 | #include <asm/i8259.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | #include <asm/sections.h> |
Yinghai Lu | 1c6e550 | 2008-06-17 15:41:45 -0700 | [diff] [blame] | 84 | #include <asm/dmi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | #include <asm/io_apic.h> |
| 86 | #include <asm/ist.h> |
Zachary Amsden | 7ce0bcf | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 87 | #include <asm/vmi.h> |
Ingo Molnar | 1164dd0 | 2009-01-28 19:34:09 +0100 | [diff] [blame] | 88 | #include <asm/setup_arch.h> |
Alexey Starikovskiy | ce3fe6b | 2008-03-17 22:08:17 +0300 | [diff] [blame] | 89 | #include <asm/bios_ebda.h> |
Bernhard Walle | 00bf409 | 2007-10-21 16:42:01 -0700 | [diff] [blame] | 90 | #include <asm/cacheflush.h> |
Alexander van Heukelum | 2fde61f | 2008-03-04 19:57:42 +0100 | [diff] [blame] | 91 | #include <asm/processor.h> |
Yinghai Lu | cc9f7a0 | 2008-06-16 16:11:08 -0700 | [diff] [blame] | 92 | #include <asm/bugs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 94 | #include <asm/system.h> |
| 95 | #include <asm/vsyscall.h> |
Jaswinder Singh Rajput | 6e5385d | 2009-01-07 18:11:35 +0530 | [diff] [blame] | 96 | #include <asm/cpu.h> |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 97 | #include <asm/desc.h> |
| 98 | #include <asm/dma.h> |
FUJITA Tomonori | 46a7fa2 | 2008-07-11 10:23:42 +0900 | [diff] [blame] | 99 | #include <asm/iommu.h> |
Joerg Roedel | 1d9b16d | 2008-11-27 18:39:15 +0100 | [diff] [blame] | 100 | #include <asm/gart.h> |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 101 | #include <asm/mmu_context.h> |
| 102 | #include <asm/proto.h> |
| 103 | |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 104 | #include <asm/paravirt.h> |
Alok Kataria | 88b094f | 2008-10-27 10:41:46 -0700 | [diff] [blame] | 105 | #include <asm/hypervisor.h> |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 106 | |
| 107 | #include <asm/percpu.h> |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 108 | #include <asm/topology.h> |
| 109 | #include <asm/apicdef.h> |
David Rientjes | 8ee2deb | 2009-09-25 15:20:00 -0700 | [diff] [blame] | 110 | #include <asm/k8.h> |
Yinghai Lu | 55f2623 | 2008-06-25 17:54:23 -0700 | [diff] [blame] | 111 | #ifdef CONFIG_X86_64 |
| 112 | #include <asm/numa_64.h> |
| 113 | #endif |
Yong Wang | a2202aa | 2009-11-10 09:38:24 +0800 | [diff] [blame] | 114 | #include <asm/mce.h> |
Yinghai Lu | 46d671b | 2008-06-25 17:51:29 -0700 | [diff] [blame] | 115 | |
Pekka Enberg | 2b72394 | 2009-04-28 16:00:49 +0300 | [diff] [blame] | 116 | /* |
| 117 | * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries. |
| 118 | * The direct mapping extends to max_pfn_mapped, so that we can directly access |
| 119 | * apertures, ACPI and other tables without having to play with fixmaps. |
| 120 | */ |
| 121 | unsigned long max_low_pfn_mapped; |
| 122 | unsigned long max_pfn_mapped; |
| 123 | |
Jeremy Fitzhardinge | 796216a | 2009-03-12 16:09:49 -0700 | [diff] [blame] | 124 | RESERVE_BRK(dmi_alloc, 65536); |
| 125 | |
Ingo Molnar | c0b5842 | 2009-01-27 17:13:05 +0100 | [diff] [blame] | 126 | unsigned int boot_cpu_id __read_mostly; |
| 127 | |
Jeremy Fitzhardinge | 93dbda7 | 2009-02-26 17:35:44 -0800 | [diff] [blame] | 128 | static __initdata unsigned long _brk_start = (unsigned long)__brk_base; |
| 129 | unsigned long _brk_end = (unsigned long)__brk_base; |
| 130 | |
Ingo Molnar | c0b5842 | 2009-01-27 17:13:05 +0100 | [diff] [blame] | 131 | #ifdef CONFIG_X86_64 |
| 132 | int default_cpu_present_to_apicid(int mps_cpu) |
| 133 | { |
| 134 | return __default_cpu_present_to_apicid(mps_cpu); |
| 135 | } |
| 136 | |
Thomas Gleixner | e11dada | 2009-08-31 15:18:40 +0200 | [diff] [blame] | 137 | int default_check_phys_apicid_present(int phys_apicid) |
Ingo Molnar | c0b5842 | 2009-01-27 17:13:05 +0100 | [diff] [blame] | 138 | { |
Thomas Gleixner | e11dada | 2009-08-31 15:18:40 +0200 | [diff] [blame] | 139 | return __default_check_phys_apicid_present(phys_apicid); |
Ingo Molnar | c0b5842 | 2009-01-27 17:13:05 +0100 | [diff] [blame] | 140 | } |
| 141 | #endif |
| 142 | |
Yinghai Lu | 217b8ce | 2008-06-25 17:55:20 -0700 | [diff] [blame] | 143 | #ifndef CONFIG_DEBUG_BOOT_PARAMS |
| 144 | struct boot_params __initdata boot_params; |
| 145 | #else |
| 146 | struct boot_params boot_params; |
| 147 | #endif |
| 148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | /* |
| 150 | * Machine setup.. |
| 151 | */ |
Bernhard Walle | c9cce83 | 2008-01-30 13:30:32 +0100 | [diff] [blame] | 152 | static struct resource data_resource = { |
| 153 | .name = "Kernel data", |
| 154 | .start = 0, |
| 155 | .end = 0, |
| 156 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM |
| 157 | }; |
| 158 | |
| 159 | static struct resource code_resource = { |
| 160 | .name = "Kernel code", |
| 161 | .start = 0, |
| 162 | .end = 0, |
| 163 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM |
| 164 | }; |
| 165 | |
| 166 | static struct resource bss_resource = { |
| 167 | .name = "Kernel bss", |
| 168 | .start = 0, |
| 169 | .end = 0, |
| 170 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM |
| 171 | }; |
| 172 | |
Yinghai Lu | 7dea23e | 2008-06-25 17:50:06 -0700 | [diff] [blame] | 173 | |
| 174 | #ifdef CONFIG_X86_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | /* cpu data as detected by the assembly code in head.S */ |
Yinghai Lu | 7dea23e | 2008-06-25 17:50:06 -0700 | [diff] [blame] | 176 | struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | /* common cpu data for all cpus */ |
Yinghai Lu | 7dea23e | 2008-06-25 17:50:06 -0700 | [diff] [blame] | 178 | struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1}; |
Alexey Dobriyan | 129f694 | 2005-06-23 00:08:33 -0700 | [diff] [blame] | 179 | EXPORT_SYMBOL(boot_cpu_data); |
Yinghai Lu | 7dea23e | 2008-06-25 17:50:06 -0700 | [diff] [blame] | 180 | static void set_mca_bus(int x) |
| 181 | { |
| 182 | #ifdef CONFIG_MCA |
| 183 | MCA_bus = x; |
| 184 | #endif |
| 185 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
Alexey Starikovskiy | 0c254e3 | 2008-03-27 23:55:04 +0300 | [diff] [blame] | 187 | unsigned int def_to_bigsmp; |
| 188 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | /* for MCA, but anyone else can use it if they want */ |
| 190 | unsigned int machine_id; |
| 191 | unsigned int machine_submodel_id; |
| 192 | unsigned int BIOS_revision; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
Yinghai Lu | 7dea23e | 2008-06-25 17:50:06 -0700 | [diff] [blame] | 194 | struct apm_info apm_info; |
| 195 | EXPORT_SYMBOL(apm_info); |
| 196 | |
| 197 | #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \ |
| 198 | defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE) |
| 199 | struct ist_info ist_info; |
| 200 | EXPORT_SYMBOL(ist_info); |
| 201 | #else |
| 202 | struct ist_info ist_info; |
| 203 | #endif |
| 204 | |
| 205 | #else |
Jeremy Fitzhardinge | ed26dbe | 2009-03-04 16:16:51 -0800 | [diff] [blame] | 206 | struct cpuinfo_x86 boot_cpu_data __read_mostly = { |
| 207 | .x86_phys_bits = MAX_PHYSMEM_BITS, |
| 208 | }; |
Yinghai Lu | 7dea23e | 2008-06-25 17:50:06 -0700 | [diff] [blame] | 209 | EXPORT_SYMBOL(boot_cpu_data); |
| 210 | #endif |
| 211 | |
| 212 | |
| 213 | #if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) |
| 214 | unsigned long mmu_cr4_features; |
| 215 | #else |
| 216 | unsigned long mmu_cr4_features = X86_CR4_PAE; |
| 217 | #endif |
| 218 | |
H. Peter Anvin | 5031296 | 2009-05-07 16:54:11 -0700 | [diff] [blame] | 219 | /* Boot loader ID and version as integers, for the benefit of proc_dointvec */ |
| 220 | int bootloader_type, bootloader_version; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | /* |
| 223 | * Setup options |
| 224 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | struct screen_info screen_info; |
Alexey Dobriyan | 129f694 | 2005-06-23 00:08:33 -0700 | [diff] [blame] | 226 | EXPORT_SYMBOL(screen_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | struct edid_info edid_info; |
Antonino A. Daplas | 5e518d7 | 2005-09-09 13:04:34 -0700 | [diff] [blame] | 228 | EXPORT_SYMBOL_GPL(edid_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | extern int root_mountflags; |
| 231 | |
Pavel Machek | e44b7b7 | 2008-04-10 23:28:10 +0200 | [diff] [blame] | 232 | unsigned long saved_video_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 234 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | #define RAMDISK_PROMPT_FLAG 0x8000 |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 236 | #define RAMDISK_LOAD_FLAG 0x4000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
Alon Bar-Lev | 4e498b6 | 2007-02-12 00:54:11 -0800 | [diff] [blame] | 238 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
Tim Bird | 516cbf3 | 2008-08-12 12:52:36 -0700 | [diff] [blame] | 239 | #ifdef CONFIG_CMDLINE_BOOL |
| 240 | static char __initdata builtin_cmdline[COMMAND_LINE_SIZE] = CONFIG_CMDLINE; |
| 241 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE) |
| 244 | struct edd edd; |
| 245 | #ifdef CONFIG_EDD_MODULE |
| 246 | EXPORT_SYMBOL(edd); |
| 247 | #endif |
| 248 | /** |
| 249 | * copy_edd() - Copy the BIOS EDD information |
| 250 | * from boot_params into a safe place. |
| 251 | * |
| 252 | */ |
Helight.Xu | 9eaa192 | 2009-11-30 18:33:51 +0800 | [diff] [blame] | 253 | static inline void __init copy_edd(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | { |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 255 | memcpy(edd.mbr_signature, boot_params.edd_mbr_sig_buffer, |
| 256 | sizeof(edd.mbr_signature)); |
| 257 | memcpy(edd.edd_info, boot_params.eddbuf, sizeof(edd.edd_info)); |
| 258 | edd.mbr_signature_nr = boot_params.edd_mbr_sig_buf_entries; |
| 259 | edd.edd_info_nr = boot_params.eddbuf_entries; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | } |
| 261 | #else |
Helight.Xu | 9eaa192 | 2009-11-30 18:33:51 +0800 | [diff] [blame] | 262 | static inline void __init copy_edd(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | { |
| 264 | } |
| 265 | #endif |
| 266 | |
H. Peter Anvin | 5368a2b | 2009-03-14 17:19:51 -0700 | [diff] [blame] | 267 | void * __init extend_brk(size_t size, size_t align) |
| 268 | { |
| 269 | size_t mask = align - 1; |
| 270 | void *ret; |
| 271 | |
| 272 | BUG_ON(_brk_start == 0); |
| 273 | BUG_ON(align & mask); |
| 274 | |
| 275 | _brk_end = (_brk_end + mask) & ~mask; |
| 276 | BUG_ON((char *)(_brk_end + size) > __brk_limit); |
| 277 | |
| 278 | ret = (void *)_brk_end; |
| 279 | _brk_end += size; |
| 280 | |
| 281 | memset(ret, 0, size); |
| 282 | |
| 283 | return ret; |
| 284 | } |
| 285 | |
Pekka J Enberg | 854c879 | 2009-06-22 17:39:41 +0300 | [diff] [blame] | 286 | #ifdef CONFIG_X86_64 |
| 287 | static void __init init_gbpages(void) |
| 288 | { |
| 289 | if (direct_gbpages && cpu_has_gbpages) |
| 290 | printk(KERN_INFO "Using GB pages for direct mapping\n"); |
| 291 | else |
| 292 | direct_gbpages = 0; |
| 293 | } |
| 294 | #else |
| 295 | static inline void init_gbpages(void) |
| 296 | { |
| 297 | } |
| 298 | #endif |
| 299 | |
H. Peter Anvin | 5368a2b | 2009-03-14 17:19:51 -0700 | [diff] [blame] | 300 | static void __init reserve_brk(void) |
| 301 | { |
| 302 | if (_brk_end > _brk_start) |
| 303 | reserve_early(__pa(_brk_start), __pa(_brk_end), "BRK"); |
| 304 | |
| 305 | /* Mark brk area as locked down and no longer taking any |
| 306 | new allocations */ |
| 307 | _brk_start = 0; |
| 308 | } |
| 309 | |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 310 | #ifdef CONFIG_BLK_DEV_INITRD |
| 311 | |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 312 | #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) |
| 313 | static void __init relocate_initrd(void) |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 314 | { |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 315 | |
Yinghai Lu | ba5b14c | 2008-05-21 18:40:18 -0700 | [diff] [blame] | 316 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
| 317 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; |
Yinghai Lu | 8c5dd8f | 2009-06-04 19:14:22 -0700 | [diff] [blame] | 318 | u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; |
Yinghai Lu | ba5b14c | 2008-05-21 18:40:18 -0700 | [diff] [blame] | 319 | u64 ramdisk_here; |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 320 | unsigned long slop, clen, mapaddr; |
| 321 | char *p, *q; |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 322 | |
| 323 | /* We need to move the initrd down into lowmem */ |
Yinghai Lu | 4e29684 | 2008-06-24 12:18:14 -0700 | [diff] [blame] | 324 | ramdisk_here = find_e820_area(0, end_of_lowmem, ramdisk_size, |
| 325 | PAGE_SIZE); |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 326 | |
Yinghai Lu | 3945e2c | 2008-05-25 10:00:09 -0700 | [diff] [blame] | 327 | if (ramdisk_here == -1ULL) |
| 328 | panic("Cannot find place for new RAMDISK of size %lld\n", |
| 329 | ramdisk_size); |
| 330 | |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 331 | /* Note: this includes all the lowmem currently occupied by |
| 332 | the initrd, we rely on that fact to keep the data intact. */ |
Yinghai Lu | 3945e2c | 2008-05-25 10:00:09 -0700 | [diff] [blame] | 333 | reserve_early(ramdisk_here, ramdisk_here + ramdisk_size, |
Yinghai Lu | ba5b14c | 2008-05-21 18:40:18 -0700 | [diff] [blame] | 334 | "NEW RAMDISK"); |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 335 | initrd_start = ramdisk_here + PAGE_OFFSET; |
| 336 | initrd_end = initrd_start + ramdisk_size; |
Yinghai Lu | f0d4310 | 2008-05-29 12:56:36 -0700 | [diff] [blame] | 337 | printk(KERN_INFO "Allocated new RAMDISK: %08llx - %08llx\n", |
| 338 | ramdisk_here, ramdisk_here + ramdisk_size); |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 339 | |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 340 | q = (char *)initrd_start; |
| 341 | |
| 342 | /* Copy any lowmem portion of the initrd */ |
| 343 | if (ramdisk_image < end_of_lowmem) { |
| 344 | clen = end_of_lowmem - ramdisk_image; |
| 345 | p = (char *)__va(ramdisk_image); |
| 346 | memcpy(q, p, clen); |
| 347 | q += clen; |
| 348 | ramdisk_image += clen; |
| 349 | ramdisk_size -= clen; |
| 350 | } |
| 351 | |
| 352 | /* Copy the highmem portion of the initrd */ |
| 353 | while (ramdisk_size) { |
| 354 | slop = ramdisk_image & ~PAGE_MASK; |
| 355 | clen = ramdisk_size; |
| 356 | if (clen > MAX_MAP_CHUNK-slop) |
| 357 | clen = MAX_MAP_CHUNK-slop; |
| 358 | mapaddr = ramdisk_image & PAGE_MASK; |
Jeremy Fitzhardinge | 88b4c14 | 2008-09-07 15:21:16 -0700 | [diff] [blame] | 359 | p = early_memremap(mapaddr, clen+slop); |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 360 | memcpy(q, p+slop, clen); |
Huang, Ying | beacfaa | 2008-01-30 13:33:44 +0100 | [diff] [blame] | 361 | early_iounmap(p, clen+slop); |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 362 | q += clen; |
| 363 | ramdisk_image += clen; |
| 364 | ramdisk_size -= clen; |
| 365 | } |
Yinghai Lu | a4c81cf | 2008-05-18 01:18:57 -0700 | [diff] [blame] | 366 | /* high pages is not converted by early_res_to_bootmem */ |
Yinghai Lu | ba5b14c | 2008-05-21 18:40:18 -0700 | [diff] [blame] | 367 | ramdisk_image = boot_params.hdr.ramdisk_image; |
| 368 | ramdisk_size = boot_params.hdr.ramdisk_size; |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 369 | printk(KERN_INFO "Move RAMDISK from %016llx - %016llx to" |
| 370 | " %08llx - %08llx\n", |
Yinghai Lu | ba5b14c | 2008-05-21 18:40:18 -0700 | [diff] [blame] | 371 | ramdisk_image, ramdisk_image + ramdisk_size - 1, |
| 372 | ramdisk_here, ramdisk_here + ramdisk_size - 1); |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 373 | } |
Yinghai Lu | 9a27f5c | 2008-06-13 20:07:03 -0700 | [diff] [blame] | 374 | |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 375 | static void __init reserve_initrd(void) |
| 376 | { |
| 377 | u64 ramdisk_image = boot_params.hdr.ramdisk_image; |
| 378 | u64 ramdisk_size = boot_params.hdr.ramdisk_size; |
| 379 | u64 ramdisk_end = ramdisk_image + ramdisk_size; |
Yinghai Lu | 8c5dd8f | 2009-06-04 19:14:22 -0700 | [diff] [blame] | 380 | u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 381 | |
| 382 | if (!boot_params.hdr.type_of_loader || |
| 383 | !ramdisk_image || !ramdisk_size) |
| 384 | return; /* No initrd provided by bootloader */ |
| 385 | |
| 386 | initrd_start = 0; |
| 387 | |
| 388 | if (ramdisk_size >= (end_of_lowmem>>1)) { |
| 389 | free_early(ramdisk_image, ramdisk_end); |
| 390 | printk(KERN_ERR "initrd too large to handle, " |
| 391 | "disabling initrd\n"); |
| 392 | return; |
| 393 | } |
| 394 | |
| 395 | printk(KERN_INFO "RAMDISK: %08llx - %08llx\n", ramdisk_image, |
| 396 | ramdisk_end); |
| 397 | |
| 398 | |
| 399 | if (ramdisk_end <= end_of_lowmem) { |
| 400 | /* All in lowmem, easy case */ |
| 401 | /* |
| 402 | * don't need to reserve again, already reserved early |
| 403 | * in i386_start_kernel |
| 404 | */ |
| 405 | initrd_start = ramdisk_image + PAGE_OFFSET; |
| 406 | initrd_end = initrd_start + ramdisk_size; |
| 407 | return; |
| 408 | } |
| 409 | |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 410 | relocate_initrd(); |
Yinghai Lu | 8c5dd8f | 2009-06-04 19:14:22 -0700 | [diff] [blame] | 411 | |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 412 | free_early(ramdisk_image, ramdisk_end); |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 413 | } |
Yinghai Lu | 225c37d | 2008-06-22 02:46:58 -0700 | [diff] [blame] | 414 | #else |
Yinghai Lu | eb1379c | 2008-06-25 17:49:26 -0700 | [diff] [blame] | 415 | static void __init reserve_initrd(void) |
Yinghai Lu | 225c37d | 2008-06-22 02:46:58 -0700 | [diff] [blame] | 416 | { |
| 417 | } |
H. Peter Anvin | cf8fa92 | 2008-01-30 13:32:51 +0100 | [diff] [blame] | 418 | #endif /* CONFIG_BLK_DEV_INITRD */ |
| 419 | |
Yinghai Lu | 29f784e | 2008-06-25 18:00:22 -0700 | [diff] [blame] | 420 | static void __init parse_setup_data(void) |
Yinghai Lu | 257b0fd | 2008-06-25 17:56:22 -0700 | [diff] [blame] | 421 | { |
| 422 | struct setup_data *data; |
| 423 | u64 pa_data; |
| 424 | |
| 425 | if (boot_params.hdr.version < 0x0209) |
| 426 | return; |
| 427 | pa_data = boot_params.hdr.setup_data; |
| 428 | while (pa_data) { |
Jeremy Fitzhardinge | 88b4c14 | 2008-09-07 15:21:16 -0700 | [diff] [blame] | 429 | data = early_memremap(pa_data, PAGE_SIZE); |
Yinghai Lu | 257b0fd | 2008-06-25 17:56:22 -0700 | [diff] [blame] | 430 | switch (data->type) { |
| 431 | case SETUP_E820_EXT: |
| 432 | parse_e820_ext(data, pa_data); |
| 433 | break; |
| 434 | default: |
| 435 | break; |
| 436 | } |
Yinghai Lu | 257b0fd | 2008-06-25 17:56:22 -0700 | [diff] [blame] | 437 | pa_data = data->next; |
| 438 | early_iounmap(data, PAGE_SIZE); |
| 439 | } |
| 440 | } |
| 441 | |
Yinghai Lu | a0a0bec | 2008-07-03 11:37:13 -0700 | [diff] [blame] | 442 | static void __init e820_reserve_setup_data(void) |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 443 | { |
| 444 | struct setup_data *data; |
| 445 | u64 pa_data; |
Yinghai Lu | d9a81b4 | 2008-07-01 20:04:10 -0700 | [diff] [blame] | 446 | int found = 0; |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 447 | |
| 448 | if (boot_params.hdr.version < 0x0209) |
| 449 | return; |
| 450 | pa_data = boot_params.hdr.setup_data; |
| 451 | while (pa_data) { |
Jeremy Fitzhardinge | 88b4c14 | 2008-09-07 15:21:16 -0700 | [diff] [blame] | 452 | data = early_memremap(pa_data, sizeof(*data)); |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 453 | e820_update_range(pa_data, sizeof(*data)+data->len, |
| 454 | E820_RAM, E820_RESERVED_KERN); |
Yinghai Lu | d9a81b4 | 2008-07-01 20:04:10 -0700 | [diff] [blame] | 455 | found = 1; |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 456 | pa_data = data->next; |
| 457 | early_iounmap(data, sizeof(*data)); |
| 458 | } |
Yinghai Lu | d9a81b4 | 2008-07-01 20:04:10 -0700 | [diff] [blame] | 459 | if (!found) |
| 460 | return; |
| 461 | |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 462 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); |
Yinghai Lu | a0a0bec | 2008-07-03 11:37:13 -0700 | [diff] [blame] | 463 | memcpy(&e820_saved, &e820, sizeof(struct e820map)); |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 464 | printk(KERN_INFO "extended physical RAM map:\n"); |
| 465 | e820_print_map("reserve setup_data"); |
| 466 | } |
| 467 | |
Yinghai Lu | a0a0bec | 2008-07-03 11:37:13 -0700 | [diff] [blame] | 468 | static void __init reserve_early_setup_data(void) |
| 469 | { |
| 470 | struct setup_data *data; |
| 471 | u64 pa_data; |
| 472 | char buf[32]; |
| 473 | |
| 474 | if (boot_params.hdr.version < 0x0209) |
| 475 | return; |
| 476 | pa_data = boot_params.hdr.setup_data; |
| 477 | while (pa_data) { |
Jeremy Fitzhardinge | 88b4c14 | 2008-09-07 15:21:16 -0700 | [diff] [blame] | 478 | data = early_memremap(pa_data, sizeof(*data)); |
Yinghai Lu | a0a0bec | 2008-07-03 11:37:13 -0700 | [diff] [blame] | 479 | sprintf(buf, "setup data %x", data->type); |
| 480 | reserve_early(pa_data, pa_data+sizeof(*data)+data->len, buf); |
| 481 | pa_data = data->next; |
| 482 | early_iounmap(data, sizeof(*data)); |
| 483 | } |
| 484 | } |
| 485 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | /* |
Yinghai Lu | ccb4def | 2008-06-25 17:57:13 -0700 | [diff] [blame] | 487 | * --------- Crashkernel reservation ------------------------------ |
| 488 | */ |
| 489 | |
| 490 | #ifdef CONFIG_KEXEC |
Bernhard Walle | 32105f7 | 2008-06-26 21:54:08 +0200 | [diff] [blame] | 491 | |
Yinghai Lu | ccb4def | 2008-06-25 17:57:13 -0700 | [diff] [blame] | 492 | static inline unsigned long long get_total_mem(void) |
| 493 | { |
| 494 | unsigned long long total; |
| 495 | |
Yinghai Lu | 4428073 | 2009-11-22 17:18:49 -0800 | [diff] [blame] | 496 | total = max_pfn - min_low_pfn; |
Yinghai Lu | ccb4def | 2008-06-25 17:57:13 -0700 | [diff] [blame] | 497 | |
| 498 | return total << PAGE_SHIFT; |
| 499 | } |
| 500 | |
Yinghai Lu | 29f784e | 2008-06-25 18:00:22 -0700 | [diff] [blame] | 501 | static void __init reserve_crashkernel(void) |
Yinghai Lu | ccb4def | 2008-06-25 17:57:13 -0700 | [diff] [blame] | 502 | { |
| 503 | unsigned long long total_mem; |
| 504 | unsigned long long crash_size, crash_base; |
| 505 | int ret; |
| 506 | |
| 507 | total_mem = get_total_mem(); |
| 508 | |
| 509 | ret = parse_crashkernel(boot_command_line, total_mem, |
| 510 | &crash_size, &crash_base); |
Bernhard Walle | 32105f7 | 2008-06-26 21:54:08 +0200 | [diff] [blame] | 511 | if (ret != 0 || crash_size <= 0) |
| 512 | return; |
| 513 | |
| 514 | /* 0 means: find the address automatically */ |
| 515 | if (crash_base <= 0) { |
Yinghai Lu | 4428073 | 2009-11-22 17:18:49 -0800 | [diff] [blame] | 516 | const unsigned long long alignment = 16<<20; /* 16M */ |
| 517 | |
| 518 | crash_base = find_e820_area(alignment, ULONG_MAX, crash_size, |
| 519 | alignment); |
Bernhard Walle | 32105f7 | 2008-06-26 21:54:08 +0200 | [diff] [blame] | 520 | if (crash_base == -1ULL) { |
Yinghai Lu | 4428073 | 2009-11-22 17:18:49 -0800 | [diff] [blame] | 521 | pr_info("crashkernel reservation failed - No suitable area found.\n"); |
Yinghai Lu | ccb4def | 2008-06-25 17:57:13 -0700 | [diff] [blame] | 522 | return; |
| 523 | } |
Bernhard Walle | 32105f7 | 2008-06-26 21:54:08 +0200 | [diff] [blame] | 524 | } else { |
Yinghai Lu | 4428073 | 2009-11-22 17:18:49 -0800 | [diff] [blame] | 525 | unsigned long long start; |
| 526 | |
| 527 | start = find_e820_area(crash_base, ULONG_MAX, crash_size, |
| 528 | 1<<20); |
| 529 | if (start != crash_base) { |
| 530 | pr_info("crashkernel reservation failed - memory is in use.\n"); |
Yinghai Lu | ccb4def | 2008-06-25 17:57:13 -0700 | [diff] [blame] | 531 | return; |
| 532 | } |
Yinghai Lu | ccb4def | 2008-06-25 17:57:13 -0700 | [diff] [blame] | 533 | } |
Yinghai Lu | 4428073 | 2009-11-22 17:18:49 -0800 | [diff] [blame] | 534 | reserve_early(crash_base, crash_base + crash_size, "CRASH KERNEL"); |
Bernhard Walle | 32105f7 | 2008-06-26 21:54:08 +0200 | [diff] [blame] | 535 | |
| 536 | printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " |
| 537 | "for crashkernel (System RAM: %ldMB)\n", |
| 538 | (unsigned long)(crash_size >> 20), |
| 539 | (unsigned long)(crash_base >> 20), |
| 540 | (unsigned long)(total_mem >> 20)); |
| 541 | |
| 542 | crashk_res.start = crash_base; |
| 543 | crashk_res.end = crash_base + crash_size - 1; |
| 544 | insert_resource(&iomem_resource, &crashk_res); |
Yinghai Lu | ccb4def | 2008-06-25 17:57:13 -0700 | [diff] [blame] | 545 | } |
| 546 | #else |
Yinghai Lu | 29f784e | 2008-06-25 18:00:22 -0700 | [diff] [blame] | 547 | static void __init reserve_crashkernel(void) |
Yinghai Lu | ccb4def | 2008-06-25 17:57:13 -0700 | [diff] [blame] | 548 | { |
| 549 | } |
| 550 | #endif |
| 551 | |
Yinghai Lu | bdba0e7 | 2008-06-25 17:58:02 -0700 | [diff] [blame] | 552 | static struct resource standard_io_resources[] = { |
| 553 | { .name = "dma1", .start = 0x00, .end = 0x1f, |
| 554 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 555 | { .name = "pic1", .start = 0x20, .end = 0x21, |
| 556 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 557 | { .name = "timer0", .start = 0x40, .end = 0x43, |
| 558 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 559 | { .name = "timer1", .start = 0x50, .end = 0x53, |
| 560 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 561 | { .name = "keyboard", .start = 0x60, .end = 0x60, |
| 562 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 563 | { .name = "keyboard", .start = 0x64, .end = 0x64, |
| 564 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 565 | { .name = "dma page reg", .start = 0x80, .end = 0x8f, |
| 566 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 567 | { .name = "pic2", .start = 0xa0, .end = 0xa1, |
| 568 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 569 | { .name = "dma2", .start = 0xc0, .end = 0xdf, |
| 570 | .flags = IORESOURCE_BUSY | IORESOURCE_IO }, |
| 571 | { .name = "fpu", .start = 0xf0, .end = 0xff, |
| 572 | .flags = IORESOURCE_BUSY | IORESOURCE_IO } |
| 573 | }; |
| 574 | |
Thomas Gleixner | 8fee697 | 2009-08-19 14:55:50 +0200 | [diff] [blame] | 575 | void __init reserve_standard_io_resources(void) |
Yinghai Lu | bdba0e7 | 2008-06-25 17:58:02 -0700 | [diff] [blame] | 576 | { |
| 577 | int i; |
| 578 | |
| 579 | /* request I/O space for devices used on all i[345]86 PCs */ |
| 580 | for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++) |
| 581 | request_resource(&ioport_resource, &standard_io_resources[i]); |
| 582 | |
| 583 | } |
| 584 | |
Vivek Goyal | 57cac4d | 2008-10-18 20:28:25 -0700 | [diff] [blame] | 585 | /* |
| 586 | * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by |
| 587 | * is_kdump_kernel() to determine if we are booting after a panic. Hence |
| 588 | * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. |
| 589 | */ |
| 590 | |
| 591 | #ifdef CONFIG_CRASH_DUMP |
Yinghai Lu | 0196bcb | 2008-06-25 17:58:55 -0700 | [diff] [blame] | 592 | /* elfcorehdr= specifies the location of elf core header |
| 593 | * stored by the crashed kernel. This option will be passed |
| 594 | * by kexec loader to the capture kernel. |
| 595 | */ |
| 596 | static int __init setup_elfcorehdr(char *arg) |
| 597 | { |
| 598 | char *end; |
| 599 | if (!arg) |
| 600 | return -EINVAL; |
| 601 | elfcorehdr_addr = memparse(arg, &end); |
| 602 | return end > arg ? 0 : -EINVAL; |
| 603 | } |
| 604 | early_param("elfcorehdr", setup_elfcorehdr); |
| 605 | #endif |
| 606 | |
Richard A. Holden III | bb55746 | 2008-11-19 16:05:15 -0700 | [diff] [blame] | 607 | #ifdef CONFIG_X86_RESERVE_LOW_64K |
Ingo Molnar | 5649b7c | 2008-09-16 09:29:09 +0200 | [diff] [blame] | 608 | static int __init dmi_low_memory_corruption(const struct dmi_system_id *d) |
| 609 | { |
| 610 | printk(KERN_NOTICE |
Alex Chiang | 4560839 | 2009-02-04 16:44:01 -0700 | [diff] [blame] | 611 | "%s detected: BIOS may corrupt low RAM, working around it.\n", |
Ingo Molnar | 5649b7c | 2008-09-16 09:29:09 +0200 | [diff] [blame] | 612 | d->ident); |
| 613 | |
Yinghai Lu | 2216d19 | 2008-09-22 02:52:26 -0700 | [diff] [blame] | 614 | e820_update_range(0, 0x10000, E820_RAM, E820_RESERVED); |
| 615 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); |
Ingo Molnar | 5649b7c | 2008-09-16 09:29:09 +0200 | [diff] [blame] | 616 | |
| 617 | return 0; |
| 618 | } |
Richard A. Holden III | bb55746 | 2008-11-19 16:05:15 -0700 | [diff] [blame] | 619 | #endif |
Ingo Molnar | 5649b7c | 2008-09-16 09:29:09 +0200 | [diff] [blame] | 620 | |
| 621 | /* List of systems that have known low memory corruption BIOS problems */ |
| 622 | static struct dmi_system_id __initdata bad_bios_dmi_table[] = { |
Ingo Molnar | fc38151 | 2008-09-16 10:07:34 +0200 | [diff] [blame] | 623 | #ifdef CONFIG_X86_RESERVE_LOW_64K |
Ingo Molnar | 5649b7c | 2008-09-16 09:29:09 +0200 | [diff] [blame] | 624 | { |
| 625 | .callback = dmi_low_memory_corruption, |
| 626 | .ident = "AMI BIOS", |
| 627 | .matches = { |
| 628 | DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."), |
| 629 | }, |
| 630 | }, |
Ingo Molnar | 1e22436 | 2008-09-16 09:58:02 +0200 | [diff] [blame] | 631 | { |
| 632 | .callback = dmi_low_memory_corruption, |
| 633 | .ident = "Phoenix BIOS", |
| 634 | .matches = { |
Philipp Kohlbecher | 0af40a4 | 2008-11-16 12:11:01 +0100 | [diff] [blame] | 635 | DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies"), |
Ingo Molnar | 1e22436 | 2008-09-16 09:58:02 +0200 | [diff] [blame] | 636 | }, |
| 637 | }, |
Alexey Fisher | 6aa542a | 2009-07-15 14:16:09 +0200 | [diff] [blame] | 638 | { |
Simon Kagstrom | f1b291d | 2009-11-06 15:44:04 +0100 | [diff] [blame] | 639 | .callback = dmi_low_memory_corruption, |
| 640 | .ident = "Phoenix/MSC BIOS", |
| 641 | .matches = { |
| 642 | DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix/MSC"), |
| 643 | }, |
| 644 | }, |
| 645 | { |
Alexey Fisher | 6aa542a | 2009-07-15 14:16:09 +0200 | [diff] [blame] | 646 | /* |
| 647 | * AMI BIOS with low memory corruption was found on Intel DG45ID board. |
| 648 | * It hase different DMI_BIOS_VENDOR = "Intel Corp.", for now we will |
| 649 | * match only DMI_BOARD_NAME and see if there is more bad products |
| 650 | * with this vendor. |
| 651 | */ |
| 652 | .callback = dmi_low_memory_corruption, |
| 653 | .ident = "AMI BIOS", |
| 654 | .matches = { |
| 655 | DMI_MATCH(DMI_BOARD_NAME, "DG45ID"), |
| 656 | }, |
| 657 | }, |
Ingo Molnar | fc38151 | 2008-09-16 10:07:34 +0200 | [diff] [blame] | 658 | #endif |
Yinghai Lu | a8b71a2 | 2008-09-23 00:35:33 -0700 | [diff] [blame] | 659 | {} |
Ingo Molnar | 5649b7c | 2008-09-16 09:29:09 +0200 | [diff] [blame] | 660 | }; |
| 661 | |
Jeremy Fitzhardinge | 5394f80 | 2008-09-07 01:51:32 -0700 | [diff] [blame] | 662 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | * Determine if we were loaded by an EFI loader. If so, then we have also been |
| 664 | * passed the efi memmap, systab, etc., so we should use these data structures |
| 665 | * for initialization. Note, the efi init code path is determined by the |
| 666 | * global efi_enabled. This allows the same kernel image to be used on existing |
| 667 | * systems (with a traditional BIOS) as well as on EFI systems. |
| 668 | */ |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 669 | /* |
| 670 | * setup_arch - architecture-specific boot-time initializations |
| 671 | * |
| 672 | * Note: On x86_64, fixmaps are ready for use even before this is called. |
| 673 | */ |
| 674 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | void __init setup_arch(char **cmdline_p) |
| 676 | { |
David Rientjes | 8ee2deb | 2009-09-25 15:20:00 -0700 | [diff] [blame] | 677 | int acpi = 0; |
| 678 | int k8 = 0; |
| 679 | |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 680 | #ifdef CONFIG_X86_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); |
Ingo Molnar | 3b33553 | 2008-07-10 17:30:40 +0200 | [diff] [blame] | 682 | visws_early_detect(); |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 683 | #else |
| 684 | printk(KERN_INFO "Command line: %s\n", boot_command_line); |
| 685 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
Zachary Amsden | ae8d04e | 2008-12-13 12:36:58 -0800 | [diff] [blame] | 687 | /* VMI may relocate the fixmap; do this before touching ioremap area */ |
| 688 | vmi_init(); |
| 689 | |
Jeremy Fitzhardinge | 9e882c9 | 2008-07-21 16:49:54 -0700 | [diff] [blame] | 690 | early_cpu_init(); |
Jeremy Fitzhardinge | 1a98fd1 | 2008-06-29 20:02:44 -0700 | [diff] [blame] | 691 | early_ioremap_init(); |
| 692 | |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 693 | ROOT_DEV = old_decode_dev(boot_params.hdr.root_dev); |
| 694 | screen_info = boot_params.screen_info; |
| 695 | edid_info = boot_params.edid_info; |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 696 | #ifdef CONFIG_X86_32 |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 697 | apm_info.bios = boot_params.apm_bios_info; |
| 698 | ist_info = boot_params.ist_info; |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 699 | if (boot_params.sys_desc_table.length != 0) { |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 700 | set_mca_bus(boot_params.sys_desc_table.table[3] & 0x2); |
| 701 | machine_id = boot_params.sys_desc_table.table[0]; |
| 702 | machine_submodel_id = boot_params.sys_desc_table.table[1]; |
| 703 | BIOS_revision = boot_params.sys_desc_table.table[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | } |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 705 | #endif |
| 706 | saved_video_mode = boot_params.hdr.vid_mode; |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 707 | bootloader_type = boot_params.hdr.type_of_loader; |
H. Peter Anvin | 5031296 | 2009-05-07 16:54:11 -0700 | [diff] [blame] | 708 | if ((bootloader_type >> 4) == 0xe) { |
| 709 | bootloader_type &= 0xf; |
| 710 | bootloader_type |= (boot_params.hdr.ext_loader_type+0x10) << 4; |
| 711 | } |
| 712 | bootloader_version = bootloader_type & 0xf; |
| 713 | bootloader_version |= boot_params.hdr.ext_loader_ver << 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | |
| 715 | #ifdef CONFIG_BLK_DEV_RAM |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 716 | rd_image_start = boot_params.hdr.ram_size & RAMDISK_IMAGE_START_MASK; |
| 717 | rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0); |
| 718 | rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | #endif |
Yinghai Lu | 7465252 | 2008-06-23 19:53:33 -0700 | [diff] [blame] | 720 | #ifdef CONFIG_EFI |
| 721 | if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature, |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 722 | #ifdef CONFIG_X86_32 |
| 723 | "EL32", |
| 724 | #else |
| 725 | "EL64", |
| 726 | #endif |
| 727 | 4)) { |
Yinghai Lu | 7465252 | 2008-06-23 19:53:33 -0700 | [diff] [blame] | 728 | efi_enabled = 1; |
| 729 | efi_reserve_early(); |
| 730 | } |
| 731 | #endif |
| 732 | |
Thomas Gleixner | 42bbdb4 | 2009-08-20 13:04:10 +0200 | [diff] [blame] | 733 | x86_init.oem.arch_setup(); |
Huang, Ying | 2215e69 | 2008-01-30 13:31:19 +0100 | [diff] [blame] | 734 | |
Alexander van Heukelum | 0dbfafa | 2008-04-23 15:09:05 +0200 | [diff] [blame] | 735 | setup_memory_map(); |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 736 | parse_setup_data(); |
Yinghai Lu | a0a0bec | 2008-07-03 11:37:13 -0700 | [diff] [blame] | 737 | /* update the e820_saved too */ |
| 738 | e820_reserve_setup_data(); |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 739 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | copy_edd(); |
| 741 | |
H. Peter Anvin | 30c8264 | 2007-10-15 17:13:22 -0700 | [diff] [blame] | 742 | if (!boot_params.hdr.root_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | root_mountflags &= ~MS_RDONLY; |
| 744 | init_mm.start_code = (unsigned long) _text; |
| 745 | init_mm.end_code = (unsigned long) _etext; |
| 746 | init_mm.end_data = (unsigned long) _edata; |
Jeremy Fitzhardinge | 93dbda7 | 2009-02-26 17:35:44 -0800 | [diff] [blame] | 747 | init_mm.brk = _brk_end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | |
| 749 | code_resource.start = virt_to_phys(_text); |
| 750 | code_resource.end = virt_to_phys(_etext)-1; |
| 751 | data_resource.start = virt_to_phys(_etext); |
| 752 | data_resource.end = virt_to_phys(_edata)-1; |
Bernhard Walle | 00bf409 | 2007-10-21 16:42:01 -0700 | [diff] [blame] | 753 | bss_resource.start = virt_to_phys(&__bss_start); |
| 754 | bss_resource.end = virt_to_phys(&__bss_stop)-1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | |
Tim Bird | 516cbf3 | 2008-08-12 12:52:36 -0700 | [diff] [blame] | 756 | #ifdef CONFIG_CMDLINE_BOOL |
| 757 | #ifdef CONFIG_CMDLINE_OVERRIDE |
| 758 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); |
| 759 | #else |
| 760 | if (builtin_cmdline[0]) { |
| 761 | /* append boot loader cmdline to builtin */ |
| 762 | strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE); |
| 763 | strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE); |
| 764 | strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE); |
| 765 | } |
| 766 | #endif |
| 767 | #endif |
| 768 | |
Yinghai Lu | eda6da9 | 2009-09-19 11:07:57 -0700 | [diff] [blame] | 769 | strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE); |
| 770 | *cmdline_p = command_line; |
| 771 | |
Yinghai Lu | eda6da9 | 2009-09-19 11:07:57 -0700 | [diff] [blame] | 772 | /* |
Kees Cook | 4b0f3b8 | 2009-11-13 15:28:17 -0800 | [diff] [blame] | 773 | * x86_configure_nx() is called before parse_early_param() to detect |
| 774 | * whether hardware doesn't support NX (so that the early EHCI debug |
| 775 | * console setup can safely call set_fixmap()). It may then be called |
| 776 | * again from within noexec_setup() during parsing early parameters |
| 777 | * to honor the respective command line option. |
Yinghai Lu | eda6da9 | 2009-09-19 11:07:57 -0700 | [diff] [blame] | 778 | */ |
H. Peter Anvin | 4763ed4 | 2009-11-13 15:28:16 -0800 | [diff] [blame] | 779 | x86_configure_nx(); |
Yinghai Lu | eda6da9 | 2009-09-19 11:07:57 -0700 | [diff] [blame] | 780 | |
| 781 | parse_early_param(); |
| 782 | |
Kees Cook | 4b0f3b8 | 2009-11-13 15:28:17 -0800 | [diff] [blame] | 783 | x86_report_nx(); |
Jeremy Fitzhardinge | 0ad5bce | 2008-09-11 16:42:00 -0700 | [diff] [blame] | 784 | |
Zachary Amsden | ae8d04e | 2008-12-13 12:36:58 -0800 | [diff] [blame] | 785 | /* Must be before kernel pagetables are setup */ |
| 786 | vmi_activate(); |
Alok Kataria | 3a6ddd5 | 2008-08-21 11:32:26 -0700 | [diff] [blame] | 787 | |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 788 | /* after early param, so could get panic from serial */ |
Yinghai Lu | a0a0bec | 2008-07-03 11:37:13 -0700 | [diff] [blame] | 789 | reserve_early_setup_data(); |
Yinghai Lu | 28bb223 | 2008-06-30 16:20:54 -0700 | [diff] [blame] | 790 | |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 791 | if (acpi_mps_check()) { |
Ingo Molnar | 3eb11ed | 2008-06-23 22:19:22 +0200 | [diff] [blame] | 792 | #ifdef CONFIG_X86_LOCAL_APIC |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 793 | disable_apic = 1; |
| 794 | #endif |
Yinghai Lu | 988781d | 2008-07-21 11:21:43 -0700 | [diff] [blame] | 795 | setup_clear_cpu_cap(X86_FEATURE_APIC); |
Yinghai Lu | 3c999f1 | 2008-06-20 16:11:20 -0700 | [diff] [blame] | 796 | } |
| 797 | |
Linus Torvalds | dc7c65d | 2008-07-16 17:25:46 -0700 | [diff] [blame] | 798 | #ifdef CONFIG_PCI |
| 799 | if (pci_early_dump_regs) |
| 800 | early_dump_pci_devices(); |
Glauber de Oliveira Costa | 4fe29a8 | 2008-03-19 14:25:23 -0300 | [diff] [blame] | 801 | #endif |
Linus Torvalds | dc7c65d | 2008-07-16 17:25:46 -0700 | [diff] [blame] | 802 | |
Alexander van Heukelum | 0dbfafa | 2008-04-23 15:09:05 +0200 | [diff] [blame] | 803 | finish_e820_parsing(); |
Rusty Russell | 1a3f239 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 804 | |
Brian Maly | ff0c087 | 2009-03-03 21:55:31 -0500 | [diff] [blame] | 805 | if (efi_enabled) |
| 806 | efi_init(); |
| 807 | |
Yinghai Lu | 2216d19 | 2008-09-22 02:52:26 -0700 | [diff] [blame] | 808 | dmi_scan_machine(); |
| 809 | |
| 810 | dmi_check_system(bad_bios_dmi_table); |
| 811 | |
Alok Kataria | 88b094f | 2008-10-27 10:41:46 -0700 | [diff] [blame] | 812 | /* |
| 813 | * VMware detection requires dmi to be available, so this |
| 814 | * needs to be done after dmi_scan_machine, for the BP. |
| 815 | */ |
Thomas Gleixner | 2d82640 | 2009-08-20 17:06:25 +0200 | [diff] [blame] | 816 | init_hypervisor_platform(); |
Alok Kataria | 88b094f | 2008-10-27 10:41:46 -0700 | [diff] [blame] | 817 | |
Thomas Gleixner | f7cf5a5 | 2009-08-19 14:43:56 +0200 | [diff] [blame] | 818 | x86_init.resources.probe_roms(); |
Yinghai Lu | 41c094f | 2008-06-16 13:03:31 -0700 | [diff] [blame] | 819 | |
| 820 | /* after parse_early_param, so could debug it */ |
| 821 | insert_resource(&iomem_resource, &code_resource); |
| 822 | insert_resource(&iomem_resource, &data_resource); |
| 823 | insert_resource(&iomem_resource, &bss_resource); |
| 824 | |
Huang, Ying | 8b2cb7a | 2008-01-30 13:32:11 +0100 | [diff] [blame] | 825 | |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 826 | #ifdef CONFIG_X86_32 |
Yinghai Lu | cc9f7a0 | 2008-06-16 16:11:08 -0700 | [diff] [blame] | 827 | if (ppro_with_ram_bug()) { |
| 828 | e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM, |
| 829 | E820_RESERVED); |
| 830 | sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); |
| 831 | printk(KERN_INFO "fixed physical RAM map:\n"); |
| 832 | e820_print_map("bad_ppro"); |
| 833 | } |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 834 | #else |
| 835 | early_gart_iommu_check(); |
| 836 | #endif |
Yinghai Lu | cc9f7a0 | 2008-06-16 16:11:08 -0700 | [diff] [blame] | 837 | |
Yinghai Lu | 7b2a0a6 | 2008-06-03 19:35:04 -0700 | [diff] [blame] | 838 | /* |
| 839 | * partially used pages are not usable - thus |
| 840 | * we are rounding upwards: |
| 841 | */ |
Yinghai Lu | f361a45 | 2008-07-10 20:38:26 -0700 | [diff] [blame] | 842 | max_pfn = e820_end_of_ram_pfn(); |
Yinghai Lu | 7b2a0a6 | 2008-06-03 19:35:04 -0700 | [diff] [blame] | 843 | |
Yinghai Lu | 6780711 | 2008-06-08 19:53:26 -0700 | [diff] [blame] | 844 | /* preallocate 4k for mptable mpc */ |
| 845 | early_reserve_e820_mpc_new(); |
Yinghai Lu | 093af8d | 2008-01-30 13:33:32 +0100 | [diff] [blame] | 846 | /* update e820 for memory not covered by WB MTRRs */ |
| 847 | mtrr_bp_init(); |
Yinghai Lu | 2dc807b | 2008-07-08 18:56:38 -0700 | [diff] [blame] | 848 | if (mtrr_trim_uncached_memory(max_pfn)) |
Yinghai Lu | f361a45 | 2008-07-10 20:38:26 -0700 | [diff] [blame] | 849 | max_pfn = e820_end_of_ram_pfn(); |
Yinghai Lu | 76c32418 | 2008-03-23 00:16:49 -0700 | [diff] [blame] | 850 | |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 851 | #ifdef CONFIG_X86_32 |
Yinghai Lu | 4e29684 | 2008-06-24 12:18:14 -0700 | [diff] [blame] | 852 | /* max_low_pfn get updated here */ |
Yinghai Lu | 2ec65f8 | 2008-06-23 03:05:30 -0700 | [diff] [blame] | 853 | find_low_pfn_range(); |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 854 | #else |
| 855 | num_physpages = max_pfn; |
| 856 | |
Yinghai Lu | 06cd9a7 | 2009-02-16 17:29:58 -0800 | [diff] [blame] | 857 | check_x2apic(); |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 858 | |
| 859 | /* How many end-of-memory variables you have, grandma! */ |
| 860 | /* need this before calling reserve_initrd */ |
Yinghai Lu | f361a45 | 2008-07-10 20:38:26 -0700 | [diff] [blame] | 861 | if (max_pfn > (1UL<<(32 - PAGE_SHIFT))) |
| 862 | max_low_pfn = e820_end_of_low_ram_pfn(); |
| 863 | else |
| 864 | max_low_pfn = max_pfn; |
| 865 | |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 866 | high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; |
Yinghai Lu | 80989ce | 2009-05-09 23:47:42 -0700 | [diff] [blame] | 867 | max_pfn_mapped = KERNEL_IMAGE_SIZE >> PAGE_SHIFT; |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 868 | #endif |
Yinghai Lu | 2ec65f8 | 2008-06-23 03:05:30 -0700 | [diff] [blame] | 869 | |
Jeremy Fitzhardinge | 5394f80 | 2008-09-07 01:51:32 -0700 | [diff] [blame] | 870 | #ifdef CONFIG_X86_CHECK_BIOS_CORRUPTION |
| 871 | setup_bios_corruption_check(); |
| 872 | #endif |
| 873 | |
Yinghai Lu | 80989ce | 2009-05-09 23:47:42 -0700 | [diff] [blame] | 874 | printk(KERN_DEBUG "initial memory mapped : 0 - %08lx\n", |
| 875 | max_pfn_mapped<<PAGE_SHIFT); |
| 876 | |
Jeremy Fitzhardinge | 93dbda7 | 2009-02-26 17:35:44 -0800 | [diff] [blame] | 877 | reserve_brk(); |
| 878 | |
Yinghai Lu | 893f38d | 2009-12-10 13:07:22 -0800 | [diff] [blame] | 879 | /* |
| 880 | * Find and reserve possible boot-time SMP configuration: |
| 881 | */ |
| 882 | find_smp_config(); |
| 883 | |
| 884 | reserve_trampoline_memory(); |
| 885 | |
Yinghai Lu | 196cf0d | 2009-11-10 18:27:23 -0800 | [diff] [blame] | 886 | #ifdef CONFIG_ACPI_SLEEP |
| 887 | /* |
| 888 | * Reserve low memory region for sleep support. |
| 889 | * even before init_memory_mapping |
| 890 | */ |
| 891 | acpi_reserve_wakeup_memory(); |
| 892 | #endif |
Pekka J Enberg | 854c879 | 2009-06-22 17:39:41 +0300 | [diff] [blame] | 893 | init_gbpages(); |
| 894 | |
Yinghai Lu | 4e29684 | 2008-06-24 12:18:14 -0700 | [diff] [blame] | 895 | /* max_pfn_mapped is updated here */ |
Yinghai Lu | f361a45 | 2008-07-10 20:38:26 -0700 | [diff] [blame] | 896 | max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); |
| 897 | max_pfn_mapped = max_low_pfn_mapped; |
| 898 | |
| 899 | #ifdef CONFIG_X86_64 |
| 900 | if (max_pfn > max_low_pfn) { |
| 901 | max_pfn_mapped = init_memory_mapping(1UL<<32, |
| 902 | max_pfn<<PAGE_SHIFT); |
| 903 | /* can we preseve max_low_pfn ?*/ |
| 904 | max_low_pfn = max_pfn; |
| 905 | } |
| 906 | #endif |
Yinghai Lu | 4e29684 | 2008-06-24 12:18:14 -0700 | [diff] [blame] | 907 | |
Yinghai Lu | e7b3789 | 2008-06-25 21:51:28 -0700 | [diff] [blame] | 908 | /* |
| 909 | * NOTE: On x86-32, only from this point on, fixmaps are ready for use. |
| 910 | */ |
| 911 | |
| 912 | #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT |
| 913 | if (init_ohci1394_dma_early) |
| 914 | init_ohci1394_dma_on_all_controllers(); |
| 915 | #endif |
| 916 | |
Yinghai Lu | 2ec65f8 | 2008-06-23 03:05:30 -0700 | [diff] [blame] | 917 | reserve_initrd(); |
| 918 | |
Yinghai Lu | 4428073 | 2009-11-22 17:18:49 -0800 | [diff] [blame] | 919 | reserve_crashkernel(); |
| 920 | |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 921 | vsmp_init(); |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 922 | |
Yinghai Lu | 1c6e550 | 2008-06-17 15:41:45 -0700 | [diff] [blame] | 923 | io_delay_init(); |
| 924 | |
Yinghai Lu | 1c6e550 | 2008-06-17 15:41:45 -0700 | [diff] [blame] | 925 | /* |
| 926 | * Parse the ACPI tables for possible boot-time SMP configuration. |
| 927 | */ |
| 928 | acpi_boot_table_init(); |
Yinghai Lu | 1c6e550 | 2008-06-17 15:41:45 -0700 | [diff] [blame] | 929 | |
Jack Steiner | 2e42060 | 2008-09-23 15:37:13 -0500 | [diff] [blame] | 930 | early_acpi_boot_init(); |
| 931 | |
Yinghai Lu | 1c6e550 | 2008-06-17 15:41:45 -0700 | [diff] [blame] | 932 | #ifdef CONFIG_ACPI_NUMA |
Yinghai Lu | f2f865f | 2008-06-25 17:53:22 -0700 | [diff] [blame] | 933 | /* |
| 934 | * Parse SRAT to discover nodes. |
| 935 | */ |
David Rientjes | 8716273 | 2009-09-25 15:20:04 -0700 | [diff] [blame] | 936 | acpi = acpi_numa_init(); |
Yinghai Lu | 1c6e550 | 2008-06-17 15:41:45 -0700 | [diff] [blame] | 937 | #endif |
| 938 | |
David Rientjes | 8ee2deb | 2009-09-25 15:20:00 -0700 | [diff] [blame] | 939 | #ifdef CONFIG_K8_NUMA |
David Rientjes | 8716273 | 2009-09-25 15:20:04 -0700 | [diff] [blame] | 940 | if (!acpi) |
| 941 | k8 = !k8_numa_init(0, max_pfn); |
David Rientjes | 8ee2deb | 2009-09-25 15:20:00 -0700 | [diff] [blame] | 942 | #endif |
| 943 | |
| 944 | initmem_init(0, max_pfn, acpi, k8); |
Yinghai Lu | 593a0cc | 2008-06-17 10:02:45 -0700 | [diff] [blame] | 945 | |
Bernhard Walle | 91467bd | 2008-07-18 19:07:53 +0200 | [diff] [blame] | 946 | #ifdef CONFIG_X86_64 |
| 947 | /* |
| 948 | * dma32_reserve_bootmem() allocates bootmem which may conflict |
| 949 | * with the crashkernel command line, so do that after |
| 950 | * reserve_crashkernel() |
| 951 | */ |
| 952 | dma32_reserve_bootmem(); |
| 953 | #endif |
| 954 | |
Yinghai Lu | 593a0cc | 2008-06-17 10:02:45 -0700 | [diff] [blame] | 955 | reserve_ibft_region(); |
| 956 | |
Glauber de Oliveira Costa | 790c73f | 2008-02-15 17:52:48 -0200 | [diff] [blame] | 957 | #ifdef CONFIG_KVM_CLOCK |
| 958 | kvmclock_init(); |
| 959 | #endif |
| 960 | |
Thomas Gleixner | 030cb6c | 2009-08-20 14:30:02 +0200 | [diff] [blame] | 961 | x86_init.paging.pagetable_setup_start(swapper_pg_dir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | paging_init(); |
Thomas Gleixner | 030cb6c | 2009-08-20 14:30:02 +0200 | [diff] [blame] | 963 | x86_init.paging.pagetable_setup_done(swapper_pg_dir); |
Bernhard Kaindl | f212ec4 | 2008-01-30 13:34:11 +0100 | [diff] [blame] | 964 | |
Joseph Cihula | 3162534 | 2009-06-30 19:30:59 -0700 | [diff] [blame] | 965 | tboot_probe(); |
| 966 | |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 967 | #ifdef CONFIG_X86_64 |
| 968 | map_vsyscall(); |
| 969 | #endif |
| 970 | |
Rusty Russell | 1a3f239 | 2006-09-26 10:52:32 +0200 | [diff] [blame] | 971 | generic_apic_probe(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | |
Andi Kleen | 54ef340 | 2007-10-19 20:35:03 +0200 | [diff] [blame] | 973 | early_quirks(); |
Andy Currid | d44647b | 2006-06-08 00:43:38 -0700 | [diff] [blame] | 974 | |
Yinghai Lu | 295deae | 2008-06-23 19:55:05 -0700 | [diff] [blame] | 975 | /* |
| 976 | * Read APIC and some other early information from ACPI tables. |
| 977 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | acpi_boot_init(); |
Yinghai Lu | 0460661 | 2008-06-21 01:38:41 -0700 | [diff] [blame] | 979 | |
Feng Tang | efafc8b | 2009-08-14 15:23:29 -0400 | [diff] [blame] | 980 | sfi_init(); |
| 981 | |
Yinghai Lu | 295deae | 2008-06-23 19:55:05 -0700 | [diff] [blame] | 982 | /* |
| 983 | * get boot-time SMP configuration: |
| 984 | */ |
Yinghai Lu | e0da336 | 2008-06-08 18:29:22 -0700 | [diff] [blame] | 985 | if (smp_found_config) |
| 986 | get_smp_config(); |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 987 | |
Yinghai Lu | 329513a | 2008-07-02 18:54:40 -0700 | [diff] [blame] | 988 | prefill_possible_map(); |
Yinghai Lu | 301e619 | 2008-08-19 20:50:02 -0700 | [diff] [blame] | 989 | |
Yinghai Lu | 5f4765f | 2008-07-02 18:53:44 -0700 | [diff] [blame] | 990 | #ifdef CONFIG_X86_64 |
| 991 | init_cpu_to_node(); |
| 992 | #endif |
| 993 | |
Yinghai Lu | 76934ed | 2008-06-25 17:52:35 -0700 | [diff] [blame] | 994 | init_apic_mappings(); |
| 995 | ioapic_init_mappings(); |
Yinghai Lu | f3294a3 | 2008-06-27 01:41:56 -0700 | [diff] [blame] | 996 | |
Yinghai Lu | 9d6a4d0 | 2008-08-19 20:50:52 -0700 | [diff] [blame] | 997 | /* need to wait for io_apic is mapped */ |
Yinghai Lu | be5d535 | 2008-12-05 18:58:33 -0800 | [diff] [blame] | 998 | probe_nr_irqs_gsi(); |
Yinghai Lu | 9d6a4d0 | 2008-08-19 20:50:52 -0700 | [diff] [blame] | 999 | |
Yinghai Lu | 295deae | 2008-06-23 19:55:05 -0700 | [diff] [blame] | 1000 | kvm_guest_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | |
Yinghai Lu | 41c094f | 2008-06-16 13:03:31 -0700 | [diff] [blame] | 1002 | e820_reserve_resources(); |
Yinghai Lu | bf62f39 | 2008-05-20 20:10:58 -0700 | [diff] [blame] | 1003 | e820_mark_nosave_regions(max_low_pfn); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | |
Thomas Gleixner | 8fee697 | 2009-08-19 14:55:50 +0200 | [diff] [blame] | 1005 | x86_init.resources.reserve_resources(); |
Yinghai Lu | 41c094f | 2008-06-16 13:03:31 -0700 | [diff] [blame] | 1006 | |
| 1007 | e820_setup_gap(); |
| 1008 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | #ifdef CONFIG_VT |
| 1010 | #if defined(CONFIG_VGA_CONSOLE) |
| 1011 | if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY)) |
| 1012 | conswitchp = &vga_con; |
| 1013 | #elif defined(CONFIG_DUMMY_CONSOLE) |
| 1014 | conswitchp = &dummy_con; |
| 1015 | #endif |
| 1016 | #endif |
Thomas Gleixner | 6f30c1a | 2009-08-20 13:19:57 +0200 | [diff] [blame] | 1017 | x86_init.oem.banner(); |
Yong Wang | a2202aa | 2009-11-10 09:38:24 +0800 | [diff] [blame] | 1018 | |
| 1019 | mcheck_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | } |
Ingo Molnar | 5649b7c | 2008-09-16 09:29:09 +0200 | [diff] [blame] | 1021 | |
Ingo Molnar | 9be1b56 | 2009-02-17 23:12:48 +0100 | [diff] [blame] | 1022 | #ifdef CONFIG_X86_32 |
Ingo Molnar | 5649b7c | 2008-09-16 09:29:09 +0200 | [diff] [blame] | 1023 | |
Thomas Gleixner | 8fee697 | 2009-08-19 14:55:50 +0200 | [diff] [blame] | 1024 | static struct resource video_ram_resource = { |
| 1025 | .name = "Video RAM area", |
| 1026 | .start = 0xa0000, |
| 1027 | .end = 0xbffff, |
| 1028 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM |
Ingo Molnar | 9be1b56 | 2009-02-17 23:12:48 +0100 | [diff] [blame] | 1029 | }; |
| 1030 | |
Thomas Gleixner | 8fee697 | 2009-08-19 14:55:50 +0200 | [diff] [blame] | 1031 | void __init i386_reserve_resources(void) |
Ingo Molnar | 9be1b56 | 2009-02-17 23:12:48 +0100 | [diff] [blame] | 1032 | { |
Thomas Gleixner | 8fee697 | 2009-08-19 14:55:50 +0200 | [diff] [blame] | 1033 | request_resource(&iomem_resource, &video_ram_resource); |
| 1034 | reserve_standard_io_resources(); |
Ingo Molnar | 9be1b56 | 2009-02-17 23:12:48 +0100 | [diff] [blame] | 1035 | } |
| 1036 | |
Ingo Molnar | 9be1b56 | 2009-02-17 23:12:48 +0100 | [diff] [blame] | 1037 | #endif /* CONFIG_X86_32 */ |