xref: /src/sys/dev/dec/dec_boot.h

/*	$NetBSD: dec_boot.h,v 1.5.10.3 2004/09/21 13:27:36 skrll Exp $	*/

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ralph Campbell.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)dec_boot.h	8.1 (Berkeley) 6/10/93
 *
 * from: Header: /sprite/src/kernel/dev/RCS/devDiskLabel.h,
 *	v 9.4 90/03/01 12:22:36 jhh Exp  SPRITE (Berkeley)
 */

#ifndef _DEV_DEC_DEC_BOOT_H_
#define _DEV_DEC_DEC_BOOT_H_

/* The following describes the ULTRIX partition tables.
 */
/*
 * DEC_NUM_DISK_PARTS is the number of partitions that are recorded in
 * the label information.  The size of the padding in the Dec_DiskLabel
 * type is dependent on this number...
 */
#define DEC_NUM_DISK_PARTS	8

/*
 * A disk is divided into partitions and this type specifies where a
 * partition starts and how many bytes it contains.
 */
typedef struct dec_disk_map {
	int32_t	num_blocks;	/* Number of 512 byte blocks in partition. */
	int32_t	start_block;	/* Start of partition in blocks. */
} dec_disk_map;

/*
 * Label information on the 31st (DEC_LABEL_SECTOR) sector.
 */
typedef struct dec_disklabel {
    u_int8_t	pad0[440];		/* DIFFERENT from sprite!!! */
    int32_t	magic;			/* DEC_LABEL_MAGIC */
    int32_t	is_partitioned;		/* 1 if disk is partitioned. */
    dec_disk_map map[DEC_NUM_DISK_PARTS]; /* Indicates disk partitions. */
} dec_disklabel;

#define DEC_LABEL_MAGIC		0x00032957
#define DEC_LABEL_SECTOR	31

#endif	/* !_DEV_DEC_DEC_BOOT_H_ */