text: /* 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, see <http://www.gnu.org/licenses/>.  */
  
  #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__ */
  