source: bootcd/isolinux/syslinux-6.03/gpxe/src/arch/i386/include/multiboot.h

Last change on this file was e16e8f2, checked in by Edwin Eefting <edwin@datux.nl>, 3 years ago

bootstuff
  • Property mode set to 100644
File size: 3.6 KB
Line 
1#ifndef _MULTIBOOT_H
2#define _MULTIBOOT_H
3
4/**
5 * @file
6 *
7 * Multiboot operating systems
8 *
9 */
10
11FILE_LICENCE ( GPL2_OR_LATER );
12
13#include <stdint.h>
14
15/** The magic number for the Multiboot header */
16#define MULTIBOOT_HEADER_MAGIC 0x1BADB002
17
18/** Boot modules must be page aligned */
19#define MB_FLAG_PGALIGN 0x00000001
20
21/** Memory map must be provided */
22#define MB_FLAG_MEMMAP 0x00000002
23
24/** Video mode information must be provided */
25#define MB_FLAG_VIDMODE 0x00000004
26
27/** Image is a raw multiboot image (not ELF) */
28#define MB_FLAG_RAW 0x00010000
29
30/**
31 * The magic number passed by a Multiboot-compliant boot loader
32 *
33 * Must be passed in register %eax when jumping to the Multiboot OS
34 * image.
35 */
36#define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002
37
38/** Multiboot information structure mem_* fields are valid */
39#define MBI_FLAG_MEM 0x00000001
40
41/** Multiboot information structure boot_device field is valid */
42#define MBI_FLAG_BOOTDEV 0x00000002
43
44/** Multiboot information structure cmdline field is valid */
45#define MBI_FLAG_CMDLINE 0x00000004
46
47/** Multiboot information structure module fields are valid */
48#define MBI_FLAG_MODS 0x00000008
49
50/** Multiboot information structure a.out symbol table is valid */
51#define MBI_FLAG_AOUT 0x00000010
52
53/** Multiboot information struture ELF section header table is valid */
54#define MBI_FLAG_ELF 0x00000020
55
56/** Multiboot information structure memory map is valid */
57#define MBI_FLAG_MMAP 0x00000040
58
59/** Multiboot information structure drive list is valid */
60#define MBI_FLAG_DRIVES 0x00000080
61
62/** Multiboot information structure ROM configuration field is valid */
63#define MBI_FLAG_CFGTBL 0x00000100
64
65/** Multiboot information structure boot loader name field is valid */
66#define MBI_FLAG_LOADER 0x00000200
67
68/** Multiboot information structure APM table is valid */
69#define MBI_FLAG_APM 0x00000400
70
71/** Multiboot information structure video information is valid */
72#define MBI_FLAG_VBE 0x00000800
73
74/** A multiboot header */
75struct multiboot_header {
76        uint32_t magic;
77        uint32_t flags;
78        uint32_t checksum;
79        uint32_t header_addr;
80        uint32_t load_addr;
81        uint32_t load_end_addr;
82        uint32_t bss_end_addr;
83        uint32_t entry_addr;
84} __attribute__ (( packed, may_alias ));
85
86/** A multiboot a.out symbol table */
87struct multiboot_aout_symbol_table {
88        uint32_t tabsize;
89        uint32_t strsize;
90        uint32_t addr;
91        uint32_t reserved;
92} __attribute__ (( packed, may_alias ));
93
94/** A multiboot ELF section header table */
95struct multiboot_elf_section_header_table {
96        uint32_t num;
97        uint32_t size;
98        uint32_t addr;
99        uint32_t shndx;
100} __attribute__ (( packed, may_alias ));
101
102/** A multiboot information structure */
103struct multiboot_info {
104        uint32_t flags;
105        uint32_t mem_lower;
106        uint32_t mem_upper;
107        uint32_t boot_device;
108        uint32_t cmdline;
109        uint32_t mods_count;
110        uint32_t mods_addr;
111        union {
112                struct multiboot_aout_symbol_table aout_syms;
113                struct multiboot_elf_section_header_table elf_sections;
114        } syms;
115        uint32_t mmap_length;
116        uint32_t mmap_addr;
117        uint32_t drives_length;
118        uint32_t drives_addr;
119        uint32_t config_table;
120        uint32_t boot_loader_name;
121        uint32_t apm_table;
122        uint32_t vbe_control_info;
123        uint32_t vbe_mode_info;
124        uint16_t vbe_mode;
125        uint16_t vbe_interface_seg;
126        uint16_t vbe_interface_off;
127        uint16_t vbe_interface_len;
128} __attribute__ (( packed, may_alias ));
129
130/** A multiboot module structure */
131struct multiboot_module {
132        uint32_t mod_start;
133        uint32_t mod_end;
134        uint32_t string;
135        uint32_t reserved;
136} __attribute__ (( packed, may_alias ));
137
138/** A multiboot memory map entry */
139struct multiboot_memory_map {
140        uint32_t size;
141        uint64_t base_addr;
142        uint64_t length;
143        uint32_t type;
144} __attribute__ (( packed, may_alias ));
145
146/** Usable RAM */
147#define MBMEM_RAM 1
148
149#endif /* _MULTIBOOT_H */
Note: See TracBrowser for help on using the repository browser.