[grub2.git] / include / grub / i386 / pc / boot.h

/*
 *  GRUB  --  GRand Unified Bootloader
 *  Copyright (C) 1999,2000,2002,2005,2006,2007,2008   Free Software Foundation, Inc.
 *
 *  GRUB 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef GRUB_BOOT_MACHINE_HEADER
#define GRUB_BOOT_MACHINE_HEADER	1

/* The signature for bootloader.  */
#define GRUB_BOOT_MACHINE_SIGNATURE	0xaa55

/* The offset of the start of BPB (BIOS Parameter Block).  */
#define GRUB_BOOT_MACHINE_BPB_START	0x3

/* The offset of the end of BPB (BIOS Parameter Block).  */
#define GRUB_BOOT_MACHINE_BPB_END	0x3e

/* The offset of the major version.  */
#define GRUB_BOOT_MACHINE_VER_MAJ	0x3e

/* The offset of BOOT_DRIVE.  */
#define GRUB_BOOT_MACHINE_BOOT_DRIVE	0x4c

/* The offset of KERNEL_ADDRESS.  */
#define GRUB_BOOT_MACHINE_KERNEL_ADDRESS	0x40

/* The offset of KERNEL_SECTOR.  */
#define GRUB_BOOT_MACHINE_KERNEL_SECTOR	0x44

/* The offset of KERNEL_SEGMENT.  */
#define GRUB_BOOT_MACHINE_KERNEL_SEGMENT	0x42

/* The offset of BOOT_DRIVE_CHECK.  */
#define GRUB_BOOT_MACHINE_DRIVE_CHECK	0x4e

/* The offset of a magic number used by Windows NT.  */
#define GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC	0x1b8

/* The offset of the start of the partition table.  */
#define GRUB_BOOT_MACHINE_PART_START	0x1be

/* The offset of the end of the partition table.  */
#define GRUB_BOOT_MACHINE_PART_END	0x1fe

/* The stack segment.  */
#define GRUB_BOOT_MACHINE_STACK_SEG	0x2000

/* The segment of disk buffer. The disk buffer MUST be 32K long and
   cannot straddle a 64K boundary.  */
#define GRUB_BOOT_MACHINE_BUFFER_SEG	0x7000

/* The flag for BIOS drive number to designate a hard disk vs. a
   floppy.  */
#define GRUB_BOOT_MACHINE_BIOS_HD_FLAG	0x80

/* The segment where the kernel is loaded.  */
#define GRUB_BOOT_MACHINE_KERNEL_SEG	0x800

/* The address where the kernel is loaded.  */
#define GRUB_BOOT_MACHINE_KERNEL_ADDR	(GRUB_BOOT_MACHINE_KERNEL_SEG << 4)

/* The size of a block list used in the kernel startup code.  */
#define GRUB_BOOT_MACHINE_LIST_SIZE	12

#endif /* ! BOOT_MACHINE_HEADER */
Commit	Line	Data
6a161fa9	1	/*
4b13b216	2	* GRUB -- GRand Unified Bootloader
9be6b98b	3	* Copyright (C) 1999,2000,2002,2005,2006,2007,2008 Free Software Foundation, Inc.
6a161fa9	4	*
5a79f472	5	* GRUB is free software: you can redistribute it and/or modify
6a161fa9	6	* it under the terms of the GNU General Public License as published by
5a79f472	7	* the Free Software Foundation, either version 3 of the License, or
6a161fa9	8	* (at your option) any later version.
6a161fa9	9	*
5a79f472	10	* GRUB is distributed in the hope that it will be useful,
6a161fa9	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
5a79f472	16	* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
6a161fa9	17	*/
6a161fa9	18
4b13b216	19	#ifndef GRUB_BOOT_MACHINE_HEADER
4b13b216	20	#define GRUB_BOOT_MACHINE_HEADER 1
6a161fa9	21
6a161fa9	22	/* The signature for bootloader. */
4b13b216	23	#define GRUB_BOOT_MACHINE_SIGNATURE 0xaa55
6a161fa9	24
1cc73a62	25	/* The offset of the start of BPB (BIOS Parameter Block). */
4b13b216	26	#define GRUB_BOOT_MACHINE_BPB_START 0x3
1cc73a62	27
6a161fa9	28	/* The offset of the end of BPB (BIOS Parameter Block). */
4b13b216	29	#define GRUB_BOOT_MACHINE_BPB_END 0x3e
6a161fa9	30
6a161fa9	31	/* The offset of the major version. */
4b13b216	32	#define GRUB_BOOT_MACHINE_VER_MAJ 0x3e
6a161fa9	33
6a161fa9	34	/* The offset of BOOT_DRIVE. */
524a1e6a	35	#define GRUB_BOOT_MACHINE_BOOT_DRIVE 0x4c
6a161fa9	36
6a161fa9	37	/* The offset of KERNEL_ADDRESS. */
524a1e6a	38	#define GRUB_BOOT_MACHINE_KERNEL_ADDRESS 0x40
6a161fa9	39
6a161fa9	40	/* The offset of KERNEL_SECTOR. */
4b13b216	41	#define GRUB_BOOT_MACHINE_KERNEL_SECTOR 0x44
6a161fa9	42
6a161fa9	43	/* The offset of KERNEL_SEGMENT. */
524a1e6a	44	#define GRUB_BOOT_MACHINE_KERNEL_SEGMENT 0x42
6a161fa9	45
f806d18e	46	/* The offset of BOOT_DRIVE_CHECK. */
3ef17a2e	47	#define GRUB_BOOT_MACHINE_DRIVE_CHECK 0x4e
f806d18e	48
6a161fa9	49	/* The offset of a magic number used by Windows NT. */
4b13b216	50	#define GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC 0x1b8
6a161fa9	51
6a161fa9	52	/* The offset of the start of the partition table. */
4b13b216	53	#define GRUB_BOOT_MACHINE_PART_START 0x1be
6a161fa9	54
6a161fa9	55	/* The offset of the end of the partition table. */
4b13b216	56	#define GRUB_BOOT_MACHINE_PART_END 0x1fe
6a161fa9	57
6a161fa9	58	/* The stack segment. */
4b13b216	59	#define GRUB_BOOT_MACHINE_STACK_SEG 0x2000
6a161fa9	60
	61	/* The segment of disk buffer. The disk buffer MUST be 32K long and
	62	cannot straddle a 64K boundary. */
4b13b216	63	#define GRUB_BOOT_MACHINE_BUFFER_SEG 0x7000
6a161fa9	64
6a161fa9	65	/* The flag for BIOS drive number to designate a hard disk vs. a
6a161fa9	66	floppy. */
4b13b216	67	#define GRUB_BOOT_MACHINE_BIOS_HD_FLAG 0x80
6a161fa9	68
6a161fa9	69	/* The segment where the kernel is loaded. */
4b13b216	70	#define GRUB_BOOT_MACHINE_KERNEL_SEG 0x800
6a161fa9	71
6a161fa9	72	/* The address where the kernel is loaded. */
4b13b216	73	#define GRUB_BOOT_MACHINE_KERNEL_ADDR (GRUB_BOOT_MACHINE_KERNEL_SEG << 4)
6a161fa9	74
6a161fa9	75	/* The size of a block list used in the kernel startup code. */
524a1e6a	76	#define GRUB_BOOT_MACHINE_LIST_SIZE 12
6a161fa9	77
6a161fa9	78	#endif /* ! BOOT_MACHINE_HEADER */