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/* multiboot.h - the header for Multiboot */
/* Copyright (C) 1999, 2001 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef __MULTIBOOT_H__
#define __MULTIBOOT_H__
#include "const.h"
/*
* Multiboot header structure.
*/
#define MULTIBOOT_HEADER_MAGIC 0x1BADB002
#define MULTIBOOT_HEADER_MODS_ALIGNED 0x00000001
#define MULTIBOOT_HEADER_WANT_MEMORY 0x00000002
#define MULTIBOOT_HEADER_HAS_VBE 0x00000004
#define MULTIBOOT_HEADER_HAS_ADDR 0x00010000
/* The magic number passed by a Multiboot-compliant boot loader. */
#define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002
#define MBI_MEMLIMITS (_AC(1,u) << 0)
#define MBI_BOOTDEV (_AC(1,u) << 1)
#define MBI_CMDLINE (_AC(1,u) << 2)
#define MBI_MODULES (_AC(1,u) << 3)
#define MBI_AOUT_SYMS (_AC(1,u) << 4)
#define MBI_ELF_SYMS (_AC(1,u) << 5)
#define MBI_MEMMAP (_AC(1,u) << 6)
#define MBI_DRIVES (_AC(1,u) << 7)
#define MBI_BIOSCONFIG (_AC(1,u) << 8)
#define MBI_LOADERNAME (_AC(1,u) << 9)
#define MBI_APM (_AC(1,u) << 10)
#ifndef __ASSEMBLY__
/* The symbol table for a.out. */
typedef struct {
u32 tabsize;
u32 strsize;
u32 addr;
u32 reserved;
} aout_symbol_table_t;
/* The section header table for ELF. */
typedef struct {
u32 num;
u32 size;
u32 addr;
u32 shndx;
} elf_section_header_table_t;
/* The Multiboot information. */
typedef struct {
u32 flags;
/* Valid if flags sets MBI_MEMLIMITS */
u32 mem_lower;
u32 mem_upper;
/* Valid if flags sets MBI_BOOTDEV */
u32 boot_device;
/* Valid if flags sets MBI_CMDLINE */
u32 cmdline;
/* Valid if flags sets MBI_MODULES */
u32 mods_count;
u32 mods_addr;
/* Valid if flags sets ... */
union {
aout_symbol_table_t aout_sym; /* ... MBI_AOUT_SYMS */
elf_section_header_table_t elf_sec; /* ... MBI_ELF_SYMS */
} u;
/* Valid if flags sets MBI_MEMMAP */
u32 mmap_length;
u32 mmap_addr;
/* Valid if flags sets MBI_DRIVES */
u32 drives_length;
u32 drives_addr;
/* Valid if flags sets MBI_BIOSCONFIG */
u32 config_table;
/* Valid if flags sets MBI_LOADERNAME */
u32 boot_loader_name;
/* Valid if flags sets MBI_APM */
u32 apm_table;
} multiboot_info_t;
/* The module structure. */
typedef struct {
u32 mod_start;
u32 mod_end;
u32 string;
u32 reserved;
} module_t;
/* The memory map. Be careful that the offset 0 is base_addr_low
but no size. */
typedef struct {
u32 size;
u32 base_addr_low;
u32 base_addr_high;
u32 length_low;
u32 length_high;
u32 type;
} memory_map_t;
#endif /* __ASSEMBLY__ */
#endif /* __MULTIBOOT_H__ */
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