sys/arch/atari/stand/tostools/aptck/ahdilbl.h

   1 /*      $NetBSD: ahdilbl.h,v 1.3 2001/07/26 23:07:57 wiz Exp $  */
   2
   3 /*
   4  * Copyright (c) 1995 Leo Weppelman.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #ifndef AHDILABEL_H
  29 #define AHDILABEL_H
  30
  31 /***** from src/sys/arch/atari/include/disklabel.h *************************/
  32
  33 /*
  34  * On a volume, exclusively used by NetBSD, the boot block starts at
  35  * sector 0. To allow shared use of a volume between two or more OS's
  36  * the vendor specific AHDI format is supported. In this case the boot
  37  * block is located at the start of an AHDI partition. In any case the
  38  * size of the boot block must be at least 8KB.
  39  */
  40 #define BBMINSIZE       8192            /* minimum size of boot block      */
  41 #define LABELSECTOR     0               /* `natural' start of boot block   */
  42 #define LABELOFFSET     516             /* offset of disk label in bytes,
  43                                            relative to start of boot block */
  44 #define LABELMAXSIZE    1020            /* maximum size of disk label      */
  45
  46 #define MAXPARTITIONS   16              /* max. # of NetBSD partitions     */
  47 #define RAW_PART        2               /* xx?c is raw partition           */
  48
  49 #define NO_BOOT_BLOCK   ((u_int)-1)
  50 #define MAXAUXROOTS     29              /* max. # of auxiliary root sectors */
  51
  52 struct bootblock {
  53         u_int8_t        bb_xxboot[LABELOFFSET - sizeof(u_int32_t)];
  54                                                 /* first-stage boot loader */
  55         u_int32_t       bb_magic;               /* boot block magic number */
  56 #define NBDAMAGIC       0x4e424441
  57 #define AHDIMAGIC       0x41484449
  58         u_int8_t        bb_label[LABELMAXSIZE]; /* disk pack label         */
  59         u_int8_t        bb_bootxx[BBMINSIZE - (LABELOFFSET + LABELMAXSIZE)];
  60                                                 /* second-stage boot loader*/
  61 };
  62
  63 #define BBGETLABEL(bb, dl)      *(dl) = *((struct disklabel *)(bb)->bb_label)
  64 #define BBSETLABEL(bb, dl)      *((struct disklabel *)(bb)->bb_label) = *(dl)
  65
  66 /***** from src/sys/arch/atari/include/ahdilabel.h *************************/
  67
  68 #define AHDI_BSIZE      512             /* AHDI blocksize               */
  69 #define AHDI_BBLOCK     0               /* AHDI bootblock (root sector) */
  70 #define AHDI_MAXROOTS   (MAXAUXROOTS)   /* max. # of AHDI rootsectors   */
  71 #define AHDI_MAXPARTS   (AHDI_MAXROOTS+3) /* max. # of AHDI partitions  */
  72
  73 /*
  74  * Various `well known' AHDI partition identifiers.
  75  */
  76 #define AHDI_MKPID(x,y,z)       (   ((u_int32_t)(x) << 16)      \
  77                                   | ((u_int32_t)(y) << 8)       \
  78                                   | ((u_int32_t)(z))            \
  79                                 )
  80 #define AHDI_PID_XGM    AHDI_MKPID('X','G','M')
  81 #define AHDI_PID_GEM    AHDI_MKPID('G','E','M')
  82 #define AHDI_PID_BGM    AHDI_MKPID('B','G','M')
  83 #define AHDI_PID_RAW    AHDI_MKPID('R','A','W')
  84 #define AHDI_PID_SWP    AHDI_MKPID('S','W','P')
  85 #define AHDI_PID_NBD    AHDI_MKPID('N','B','D')
  86 #define AHDI_PID_NBR    AHDI_MKPID('N','B','R')
  87 #define AHDI_PID_NBS    AHDI_MKPID('N','B','S')
  88 #define AHDI_PID_NBU    AHDI_MKPID('N','B','U')
  89
  90 /*
  91  * Format of AHDI boot block.
  92  */
  93 #define AHDI_MAXRPD     4               /* max. # of partition descriptors */
  94                                         /* in the AHDI bootblock (aka root)*/
  95 #define AHDI_MAXARPD    2               /* max. # of partition descriptors */
  96                                         /* in an AHDI auxiliary root sector */
  97
  98 struct ahdi_part {
  99         u_int8_t        ap_flg;         /* bit 0 is in-use flag            */
 100         u_int8_t        ap_id[3];       /* id: GEM, BGM, XGM, UNX, MIX     */
 101         u_int32_t       ap_offs;        /* block where partition starts    */
 102         u_int32_t       ap_size;        /* partition size in blocks        */
 103 #define ap_end  ap_size /* in the in-core copy, store end instead of size  */
 104 };
 105
 106 struct ahdi_root {
 107         u_int8_t         ar_fill[0x1c2];/* filler, can be boot code        */
 108         u_int32_t        ar_hdsize;     /* size of entire volume in blocks */
 109         struct ahdi_part ar_parts[AHDI_MAXRPD]; /* root partition table    */
 110         u_int32_t        ar_bslst;      /* start of bad-sector list        */
 111         u_int32_t        ar_bslsize;    /* # of blocks in bad-sector list  */
 112         u_int16_t        ar_cksum;
 113 };
 114
 115 #endif /* AHDILABEL_H */