sys/arch/mac68k/include/disklabel.h

   1 /*      $NetBSD: disklabel.h,v 1.5 1998/10/30 06:48:51 scottr Exp $     */
   2
   3 /*
   4  * Copyright (c) 1994 Christopher G. Demetriou
   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  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Christopher G. Demetriou.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32 /*-
  33  * Copyright (C) 1993   Allen K. Briggs, Chris P. Caputo,
  34  *                      Michael L. Finch, Bradley A. Grantham, and
  35  *                      Lawrence A. Kesteloot
  36  * All rights reserved.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgement:
  48  *      This product includes software developed by the Alice Group.
  49  * 4. The names of the Alice Group or any of its members may not be used
  50  *    to endorse or promote products derived from this software without
  51  *    specific prior written permission.
  52  *
  53  * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
  54  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  55  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  56  * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
  57  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  58  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63  *
  64  */
  65
  66 #ifndef _MACHINE_DISKLABEL_H_
  67 #define _MACHINE_DISKLABEL_H_
  68
  69 #define LABELSECTOR     0                       /* sector containing label */
  70 #define LABELOFFSET     64                      /* offset of label in sector */
  71 #define MAXPARTITIONS   8                       /* number of partitions */
  72 #define RAW_PART        2                       /* raw partition: xx?c */
  73
  74 /* Just a dummy */
  75 struct cpu_disklabel {
  76         int     cd_dummy;                       /* must have one element. */
  77 };
  78
  79 /*
  80  * Driver Descriptor Map, from Inside Macintosh: Devices, SCSI Manager
  81  * pp 12-13.  The driver descriptor map always resides on physical block 0.
  82  */
  83 struct drvr_descriptor {
  84         u_int32_t       descBlock;      /* first block of driver */
  85         u_int16_t       descSize;       /* driver size in blocks */
  86         u_int16_t       descType;       /* system type */
  87 };
  88
  89 /* system types; Apple reserves 0-15 */
  90 #define DRVR_TYPE_MACINTOSH     1
  91
  92 struct drvr_map {
  93 #define DRIVER_MAP_MAGIC        0x4552
  94         u_int16_t       sbSig;          /* map signature */
  95         u_int16_t       sbBlockSize;    /* block size of device */
  96         u_int32_t       sbBlkCount;     /* number of blocks on device */
  97         u_int16_t       sbDevType;      /* (used internally by ROM) */
  98         u_int16_t       sbDevID;        /* (used internally by ROM) */
  99         u_int32_t       sbData;         /* (used internally by ROM) */
 100         u_int16_t       sbDrvrCount;    /* number of driver descriptors */
 101 #define DRVR_MAX_DESCRIPTORS    61
 102         struct drvr_descriptor sb_dd[DRVR_MAX_DESCRIPTORS];
 103         u_int16_t       pad[3];
 104 } __attribute__ ((packed));
 105
 106 #define ddBlock(N)      sb_dd[(N)].descBlock
 107 #define ddSize(N)       sb_dd[(N)].descSize
 108 #define ddType(N)       sb_dd[(N)].descType
 109
 110 /*
 111  * Partition map structure from Inside Macintosh: Devices, SCSI Manager
 112  * pp. 13-14.  The partition map always begins on physical block 1.
 113  *
 114  * With the exception of block 0, all blocks on the disk must belong to
 115  * exactly one partition.  The partition map itself belongs to a partition
 116  * of type `APPLE_PARTITION_MAP', and is not limited in size by anything
 117  * other than available disk space.  The partition map is not necessarily
 118  * the first partition listed.
 119  */
 120 struct part_map_entry {
 121 #define PART_ENTRY_MAGIC        0x504d
 122         u_int16_t       pmSig;          /* partition signature */
 123         u_int16_t       pmSigPad;       /* (reserved) */
 124         u_int32_t       pmMapBlkCnt;    /* number of blocks in partition map */
 125         u_int32_t       pmPyPartStart;  /* first physical block of partition */
 126         u_int32_t       pmPartBlkCnt;   /* number of blocks in partition */
 127         char            pmPartName[32]; /* partition name */
 128         char            pmPartType[32]; /* partition type */
 129         u_int32_t       pmLgDataStart;  /* first logical block of data area */
 130         u_int32_t       pmDataCnt;      /* number of blocks in data area */
 131         u_int32_t       pmPartStatus;   /* partition status information */
 132         u_int32_t       pmLgBootStart;  /* first logical block of boot code */
 133         u_int32_t       pmBootSize;     /* size of boot code, in bytes */
 134         u_int32_t       pmBootLoad;     /* boot code load address */
 135         u_int32_t       pmBootLoad2;    /* (reserved) */
 136         u_int32_t       pmBootEntry;    /* boot code entry point */
 137         u_int32_t       pmBootEntry2;   /* (reserved) */
 138         u_int32_t       pmBootCksum;    /* boot code checksum */
 139         char            pmProcessor[16]; /* processor type (e.g. "68020") */
 140         u_int8_t        pmBootArgs[128]; /* A/UX boot arguments */
 141         u_int8_t        pad[248];       /* pad to end of block */
 142 };
 143
 144 #define PART_TYPE_DRIVER        "APPLE_DRIVER"
 145 #define PART_TYPE_DRIVER43      "APPLE_DRIVER43"
 146 #define PART_TYPE_DRIVERATA     "APPLE_DRIVER_ATA"
 147 #define PART_TYPE_FWB_COMPONENT "FWB DRIVER COMPONENTS"
 148 #define PART_TYPE_MAC           "APPLE_HFS"
 149 #define PART_TYPE_NETBSD        "NETBSD"
 150 #define PART_TYPE_PARTMAP       "APPLE_PARTITION_MAP"
 151 #define PART_TYPE_SCRATCH       "APPLE_SCRATCH"
 152 #define PART_TYPE_UNIX          "APPLE_UNIX_SVR2"
 153
 154 /*
 155  * "pmBootArgs" for APPLE_UNIX_SVR2 partition.
 156  * NetBSD/mac68k only uses Magic, Cluster, Type, and Flags.
 157  */
 158 struct blockzeroblock {
 159         u_int32_t       bzbMagic;
 160         u_int8_t        bzbCluster;
 161         u_int8_t        bzbType;
 162         u_int16_t       bzbBadBlockInode;
 163         u_int16_t       bzbFlags;
 164         u_int16_t       bzbReserved;
 165         u_int32_t       bzbCreationTime;
 166         u_int32_t       bzbMountTime;
 167         u_int32_t       bzbUMountTime;
 168 };
 169
 170 #define BZB_MAGIC       0xABADBABE
 171 #define BZB_TYPEFS      1
 172 #define BZB_TYPESWAP    3
 173 #define BZB_ROOTFS      0x8000
 174 #define BZB_USRFS       0x4000
 175
 176 #endif /* _MACHINE_DISKLABEL_H_ */