kernel2/include/multiboot.h

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef _MULTIBOOT_H_
  20 #define _MULTIBOOT_H_
  21
  22 #include <sys/types.h>
  23 #include <stdint.h>
  24
  25 #define MULTIBOOT_MAGIC 0x2BADB002
  26
  27 #define multiboot_checkflag(mbi,flag) (mbi->flags&(1<<flag))
  28
  29 typedef enum {
  30   MULTIBOOT_FREE = 1,
  31   MULTIBOOT_RESERVED
  32 } multiboot_mmap_type_t;
  33
  34 typedef struct {
  35   uint32_t flags;
  36   uint32_t mem_lower;
  37   uint32_t mem_upper;
  38   uint8_t  boot_device[4];
  39   uint32_t cmdline;
  40   uint32_t mods_count;
  41   uint32_t mods_addr;
  42   uint32_t syms[4];
  43   uint32_t mmap_length;
  44   uint32_t mmap_addr;
  45   uint32_t drives_length;
  46   uint32_t drives_addr;
  47   uint32_t config_table;
  48   uint32_t boot_loader_name;
  49   uint32_t apm_table;
  50   uint32_t vbe_control_info;
  51   uint32_t vbe_mode_info;
  52   uint32_t vbe_mode;
  53   uint32_t vbe_interface_seq;
  54   uint32_t vbe_interface_off;
  55   uint32_t vbe_interface_len;
  56 } __attribute__ ((packed)) multiboot_info_t;
  57
  58 typedef struct {
  59   uint32_t size;
  60   uint64_t base;
  61   uint64_t length;
  62   multiboot_mmap_type_t type:32;
  63 } __attribute__ ((packed)) multiboot_mmape_t;
  64
  65 typedef struct {
  66   uint32_t mod_start;
  67   uint32_t mod_end;
  68   uint32_t mod_name;
  69   uint32_t reserved;
  70 } __attribute__ ((packed)) multiboot_mod_t;
  71
  72 int multiboot_init(multiboot_info_t *mbi);
  73 size_t multiboot_get_memlower();
  74 size_t multiboot_get_memupper();
  75 int multiboot_get_bootdev();
  76 char* multiboot_get_cmdline();
  77 void *multiboot_get_mod(size_t i,char **name,size_t *size);
  78 char *multiboot_get_bootloader();
  79 int multiboot_get_mmap(int item,void **addr,size_t *length,multiboot_mmap_type_t *type);
  80
  81 #endif