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H. Peter Anvin1965aae2008-10-22 22:26:29 -07001#ifndef _ASM_X86_BOOTPARAM_H
2#define _ASM_X86_BOOTPARAM_H
H. Peter Anvin48c7ae62007-07-11 12:18:35 -07003
4#include <linux/types.h>
5#include <linux/screen_info.h>
6#include <linux/apm_bios.h>
H. Peter Anvin48c7ae62007-07-11 12:18:35 -07007#include <linux/edd.h>
H. Peter Anvin238b7062007-07-18 17:19:30 -07008#include <asm/e820.h>
9#include <asm/ist.h>
H. Peter Anvin48c7ae62007-07-11 12:18:35 -070010#include <video/edid.h>
11
Huang, Ying8b664aa2008-03-28 10:49:44 +080012/* setup data types */
13#define SETUP_NONE 0
Huang, Ying8c5beb52008-06-11 11:33:39 +080014#define SETUP_E820_EXT 1
Huang, Ying8b664aa2008-03-28 10:49:44 +080015
16/* extensible setup data list node */
17struct setup_data {
Rusty Russellafaafe52008-05-02 21:14:20 +100018 __u64 next;
19 __u32 type;
20 __u32 len;
21 __u8 data[0];
Huang, Ying8b664aa2008-03-28 10:49:44 +080022};
23
H. Peter Anvin48c7ae62007-07-11 12:18:35 -070024struct setup_header {
Rusty Russellee8e7cf2007-10-22 10:56:19 +100025 __u8 setup_sects;
26 __u16 root_flags;
27 __u32 syssize;
28 __u16 ram_size;
H. Peter Anvin30c82642007-10-15 17:13:22 -070029#define RAMDISK_IMAGE_START_MASK 0x07FF
30#define RAMDISK_PROMPT_FLAG 0x8000
31#define RAMDISK_LOAD_FLAG 0x4000
Rusty Russellee8e7cf2007-10-22 10:56:19 +100032 __u16 vid_mode;
33 __u16 root_dev;
34 __u16 boot_flag;
35 __u16 jump;
36 __u32 header;
37 __u16 version;
38 __u32 realmode_swtch;
39 __u16 start_sys;
40 __u16 kernel_version;
41 __u8 type_of_loader;
42 __u8 loadflags;
Rusty Russelle5371ac2007-10-21 16:41:33 -070043#define LOADED_HIGH (1<<0)
Kristian Høgsberg3b6b9292008-05-29 18:31:15 -040044#define QUIET_FLAG (1<<5)
Rusty Russelle5371ac2007-10-21 16:41:33 -070045#define KEEP_SEGMENTS (1<<6)
46#define CAN_USE_HEAP (1<<7)
Rusty Russellee8e7cf2007-10-22 10:56:19 +100047 __u16 setup_move_size;
48 __u32 code32_start;
49 __u32 ramdisk_image;
50 __u32 ramdisk_size;
51 __u32 bootsect_kludge;
52 __u16 heap_end_ptr;
H. Peter Anvin50312962009-05-07 16:54:11 -070053 __u8 ext_loader_ver;
54 __u8 ext_loader_type;
Rusty Russellee8e7cf2007-10-22 10:56:19 +100055 __u32 cmd_line_ptr;
56 __u32 initrd_addr_max;
57 __u32 kernel_alignment;
58 __u8 relocatable_kernel;
59 __u8 _pad2[3];
60 __u32 cmdline_size;
61 __u32 hardware_subarch;
62 __u64 hardware_subarch_data;
Huang, Ying8b664aa2008-03-28 10:49:44 +080063 __u32 payload_offset;
64 __u32 payload_length;
65 __u64 setup_data;
H. Peter Anvin48c7ae62007-07-11 12:18:35 -070066} __attribute__((packed));
67
68struct sys_desc_table {
Rusty Russellee8e7cf2007-10-22 10:56:19 +100069 __u16 length;
70 __u8 table[14];
H. Peter Anvin48c7ae62007-07-11 12:18:35 -070071};
72
Andres Salomonfd699c72010-06-18 17:46:53 -040073/* Gleaned from OFW's set-parameters in cpu/x86/pc/linux.fth */
74struct olpc_ofw_header {
75 __u32 ofw_magic; /* OFW signature */
76 __u32 ofw_version;
77 __u32 cif_handler; /* callback into OFW */
78 __u32 irq_desc_table;
79} __attribute__((packed));
80
H. Peter Anvin48c7ae62007-07-11 12:18:35 -070081struct efi_info {
Huang, Ying5b836832008-01-30 13:31:19 +010082 __u32 efi_loader_signature;
Rusty Russellee8e7cf2007-10-22 10:56:19 +100083 __u32 efi_systab;
84 __u32 efi_memdesc_size;
85 __u32 efi_memdesc_version;
86 __u32 efi_memmap;
87 __u32 efi_memmap_size;
Huang, Ying5b836832008-01-30 13:31:19 +010088 __u32 efi_systab_hi;
89 __u32 efi_memmap_hi;
H. Peter Anvin48c7ae62007-07-11 12:18:35 -070090};
91
92/* The so-called "zeropage" */
93struct boot_params {
94 struct screen_info screen_info; /* 0x000 */
95 struct apm_bios_info apm_bios_info; /* 0x040 */
Joseph Cihula31625342009-06-30 19:30:59 -070096 __u8 _pad2[4]; /* 0x054 */
97 __u64 tboot_addr; /* 0x058 */
H. Peter Anvin238b7062007-07-18 17:19:30 -070098 struct ist_info ist_info; /* 0x060 */
Rusty Russellee8e7cf2007-10-22 10:56:19 +100099 __u8 _pad3[16]; /* 0x070 */
100 __u8 hd0_info[16]; /* obsolete! */ /* 0x080 */
101 __u8 hd1_info[16]; /* obsolete! */ /* 0x090 */
H. Peter Anvin48c7ae62007-07-11 12:18:35 -0700102 struct sys_desc_table sys_desc_table; /* 0x0a0 */
Andres Salomonfd699c72010-06-18 17:46:53 -0400103 struct olpc_ofw_header olpc_ofw_header; /* 0x0b0 */
104 __u8 _pad4[128]; /* 0x0c0 */
H. Peter Anvin48c7ae62007-07-11 12:18:35 -0700105 struct edid_info edid_info; /* 0x140 */
106 struct efi_info efi_info; /* 0x1c0 */
Rusty Russellee8e7cf2007-10-22 10:56:19 +1000107 __u32 alt_mem_k; /* 0x1e0 */
108 __u32 scratch; /* Scratch field! */ /* 0x1e4 */
109 __u8 e820_entries; /* 0x1e8 */
110 __u8 eddbuf_entries; /* 0x1e9 */
111 __u8 edd_mbr_sig_buf_entries; /* 0x1ea */
112 __u8 _pad6[6]; /* 0x1eb */
H. Peter Anvin48c7ae62007-07-11 12:18:35 -0700113 struct setup_header hdr; /* setup header */ /* 0x1f1 */
Rusty Russellee8e7cf2007-10-22 10:56:19 +1000114 __u8 _pad7[0x290-0x1f1-sizeof(struct setup_header)];
115 __u32 edd_mbr_sig_buffer[EDD_MBR_SIG_MAX]; /* 0x290 */
H. Peter Anvin48c7ae62007-07-11 12:18:35 -0700116 struct e820entry e820_map[E820MAX]; /* 0x2d0 */
Rusty Russellee8e7cf2007-10-22 10:56:19 +1000117 __u8 _pad8[48]; /* 0xcd0 */
H. Peter Anvin48c7ae62007-07-11 12:18:35 -0700118 struct edd_info eddbuf[EDDMAXNR]; /* 0xd00 */
Rusty Russellee8e7cf2007-10-22 10:56:19 +1000119 __u8 _pad9[276]; /* 0xeec */
H. Peter Anvin48c7ae62007-07-11 12:18:35 -0700120} __attribute__((packed));
121
Pan, Jacob jun162bc7a2009-08-28 14:52:47 -0700122enum {
123 X86_SUBARCH_PC = 0,
124 X86_SUBARCH_LGUEST,
125 X86_SUBARCH_XEN,
126 X86_SUBARCH_MRST,
Thomas Gleixnerc751e172010-11-09 12:08:04 -0800127 X86_SUBARCH_CE4100,
Pan, Jacob jun162bc7a2009-08-28 14:52:47 -0700128 X86_NR_SUBARCHS,
129};
130
131
132
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700133#endif /* _ASM_X86_BOOTPARAM_H */