1/*	$NetBSD: dec_boot.h,v 1.7 2005/12/11 12:21:20 christos Exp $	*/
 2
 3/*
 4 * Copyright (c) 1992, 1993
 5 *	The Regents of the University of California.  All rights reserved.
 6 *
 7 * This code is derived from software contributed to Berkeley by
 8 * Ralph Campbell.
 9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 *	@(#)dec_boot.h	8.1 (Berkeley) 6/10/93
35 *
36 * from: Header: /sprite/src/kernel/dev/RCS/devDiskLabel.h,
37 *	v 9.4 90/03/01 12:22:36 jhh Exp  SPRITE (Berkeley)
38 */
39
40#ifndef _DEV_DEC_DEC_BOOT_H_
41#define _DEV_DEC_DEC_BOOT_H_
42
43/* The following describes the ULTRIX partition tables.
44 */
45/*
46 * DEC_NUM_DISK_PARTS is the number of partitions that are recorded in
47 * the label information.  The size of the padding in the Dec_DiskLabel
48 * type is dependent on this number...
49 */
50#define DEC_NUM_DISK_PARTS	8
51
52/*
53 * A disk is divided into partitions and this type specifies where a
54 * partition starts and how many bytes it contains.
55 */
56typedef struct dec_disk_map {
57	int32_t	num_blocks;	/* Number of 512 byte blocks in partition. */
58	int32_t	start_block;	/* Start of partition in blocks. */
59} dec_disk_map;
60
61/*
62 * Label information on the 31st (DEC_LABEL_SECTOR) sector.
63 */
64typedef struct dec_disklabel {
65    u_int8_t	pad0[440];		/* DIFFERENT from sprite!!! */
66    int32_t	magic;			/* DEC_LABEL_MAGIC */
67    int32_t	is_partitioned;		/* 1 if disk is partitioned. */
68    dec_disk_map map[DEC_NUM_DISK_PARTS]; /* Indicates disk partitions. */
69} dec_disklabel;
70
71#define DEC_LABEL_MAGIC		0x00032957
72#define DEC_LABEL_SECTOR	31
73
74#endif	/* !_DEV_DEC_DEC_BOOT_H_ */