kernel/multiboot.h

   1 /*
   2  *    Copyright (c) 2008 Joshua Phillips. All rights reserved.
   3  *
   4  *  Redistribution and use in source and binary forms, with or without
   5  *  modification, are permitted provided that the following conditions are
   6  *  met:
   7  *
   8  *    1. Redistributions of source code must retain the above copyright
   9  *       notice, this list of conditions and the following disclaimer.
  10  *    2. Redistributions in binary form must reproduce the above copyright
  11  *       notice, this list of conditions and the following disclaimer in
  12  *       the documentation and/or other materials provided with the
  13  *       distribution.
  14  *
  15  *  THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
  16  *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18  *  DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
  19  *  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  21  *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  22  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  23  *  IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  24  *  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  25  *  IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #ifndef MULTIBOOT_H
  29 #define MULTIBOOT_H
  30
  31 // magic numbers
  32 #define MB_MBH_MAGIC 0x1BADB002 // magic number in multiboot header
  33 #define MB_BOOT_MAGIC 0x2BADB002 // magic number in eax at startup
  34
  35 #define MBI_MEM_XXX 0x01
  36 #define MBI_BOOT_DEVICE 0x02
  37 #define MBI_CMDLINE 0x04
  38 #define MBI_MODS_XXX 0x08
  39 #define MBI_SYMS 0x30
  40 #define MBI_MMAP_XXX 0x40
  41 #define MBI_DRIVES_XXX 0x80
  42 #define MBI_CONFIG_TABLE 0x100
  43 #define MBI_BOOT_LOADER_NAME 0x200
  44 #define MBI_APM_TABLE 0x400
  45 #define MBI_VBE_XXX 0x800
  46
  47 struct mb_info {
  48         unsigned long flags, mem_lower, mem_upper,
  49                 boot_device, cmd_line, mods_count, mods_addr,
  50                 syms[4], mmap_length, mmap_addr, drives_length,
  51                 drives_addr, config_table, boot_loader_name,
  52                 apm_table, vbe_control_info, vbe_mode_info,
  53                 vbe_mode, vbe_interface_seg, vbe_interface_off,
  54                 vbe_interface_len;
  55 };
  56
  57 struct mb_module {
  58         unsigned long mod_start, mod_end, string, reserved;
  59 };
  60
  61 struct mb_mmap {
  62         unsigned long size;
  63         unsigned long long base_addr, length;
  64         unsigned long type;
  65 };
  66
  67 struct mb_drive {
  68         unsigned long size;
  69         unsigned char drive_number, drive_mode;
  70         unsigned short drive_cylinders;
  71         unsigned char drive_heads, drive_sectors;
  72         unsigned short drive_ports[1];
  73 };
  74
  75 #endif
  76