sys/dev/dec/dec_boot.h

   1 /*      $NetBSD: dec_boot.h,v 1.5.10.3 2004/09/21 13:27:36 skrll 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  */
  56 typedef 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  */
  64 typedef 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_ */