packages/mac-parts.h

   1 /*
   2  *   Creation Date: <1999/07/06 15:45:12 samuel>
   3  *   Time-stamp: <2002/10/20 16:31:48 samuel>
   4  *
   5  *      <partition_table.h>
   6  *
   7  *      Headers describing the partition table
   8  *
   9  *   Copyright (C) 1999, 2002 Samuel Rydh (samuel@ibrium.se)
  10  *
  11  *   This program is free software; you can redistribute it and/or
  12  *   modify it under the terms of the GNU General Public License
  13  *   as published by the Free Software Foundation
  14  *
  15  */
  16
  17 #ifndef _H_PARTITION_TABLE
  18 #define _H_PARTITION_TABLE
  19
  20 /* This information is based upon IM vol V. */
  21
  22 #define DESC_MAP_SIGNATURE      0x4552
  23 #define DESC_PART_SIGNATURE     0x504d
  24
  25 enum {
  26         kPartitionAUXIsValid         = 0x00000001,
  27         kPartitionAUXIsAllocated     = 0x00000002,
  28         kPartitionAUXIsInUse         = 0x00000004,
  29         kPartitionAUXIsBootValid     = 0x00000008,
  30         kPartitionAUXIsReadable      = 0x00000010,
  31         kPartitionAUXIsWriteable     = 0x00000020,
  32         kPartitionAUXIsBootCodePositionIndependent = 0x00000040,
  33         kPartitionISMountedAtStartup = 0x40000000,
  34         kPartitionIsStartup          = 0x80000000,
  35         kPartitionIsChainCompatible  = 0x00000100,
  36         kPartitionIsRealDeviceDriver = 0x00000200,
  37         kPartitionCanChainToNext     = 0x00000400,
  38 };
  39
  40 typedef struct {
  41         u32             ddBlock;                /* first block of driver */
  42         u16             ddSize;                 /* driver size in blocks */
  43         s16             ddType;                 /* 1 & -1 for SCSI */
  44 } driver_entry_t;
  45
  46 typedef struct { /* Block 0 of a device */
  47         u16             sbSig;                  /* always 0x4552 */
  48         u16             sbBlockSize;            /* 512 */
  49         s32             sbBlkCount;             /* #blocks on device */
  50         u16             sbDevType;              /* 0 */
  51         u16             sbDevID;                /* 0 */
  52         u32             sbData;                 /* 0 */
  53         s16             sbDrvrCount;            /* #driver descriptors */
  54
  55         /* driver entries goes here */
  56         driver_entry_t  drivers[61] __attribute__ ((packed));
  57
  58         u16             filler1;
  59         u32             filler2;
  60 } desc_map_t;
  61
  62 typedef struct { /* Partition descriptor */
  63         u16             pmSig;                  /* always 0x504d 'PM' */
  64         u16             pmSigPad;               /* 0 */
  65         u32             pmMapBlkCnt;            /* #blocks in partition map */
  66         u32             pmPyPartStart;          /* first physical block of part. */
  67         u32             pmPartBlkCnt;           /* #blocks in partition */
  68         char            pmPartName[32];         /* partition name */
  69         char            pmPartType[32];         /* partition type */
  70
  71         /* these fields may or may not be used */
  72         u32             pmLgDataStart;
  73         u32             pmDataCnt;
  74         u32             pmPartStatus;
  75         u32             pmLgBootStart;
  76         u32             pmBootSize;
  77         u32             pmBootLoad;
  78         u32             pmBootLoad2;
  79         u32             pmBootEntry;
  80         u32             pmBootEntry2;
  81         u32             pmBootCksum;
  82         char            pmProcessor[16];
  83
  84         char            filler[376];            /* might contain extra information */
  85 } part_entry_t;
  86
  87
  88 #endif   /* _H_PARTITION_TABLE */