disk/part_mac.h

   1 /*
   2  * (C) Copyright 2000
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * See also Linux sources, fs/partitions/mac.h
  26  *
  27  * This file describes structures and values related to the standard
  28  * Apple SCSI disk partitioning scheme. For more information see:
  29  * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
  30  */
  31
  32 #ifndef _DISK_PART_MAC_H
  33 #define _DISK_PART_MAC_H
  34
  35 #define MAC_DRIVER_MAGIC        0x4552
  36
  37 /*
  38  * Driver Descriptor Structure, in block 0.
  39  * This block is (and shall remain) 512 bytes long.
  40  * Note that there is an alignment problem for the driver descriptor map!
  41  */
  42 typedef struct mac_driver_desc {
  43         __u16   signature;      /* expected to be MAC_DRIVER_MAGIC      */
  44         __u16   blk_size;       /* block size of device                 */
  45         __u32   blk_count;      /* number of blocks on device           */
  46         __u16   dev_type;       /* device type                          */
  47         __u16   dev_id;         /* device id                            */
  48         __u32   data;           /* reserved                             */
  49         __u16   drvr_cnt;       /* number of driver descriptor entries  */
  50         __u16   drvr_map[247];  /* driver descriptor map                */
  51 } mac_driver_desc_t;
  52
  53 /*
  54  * Device Driver Entry
  55  * (Cannot be included in mac_driver_desc because of alignment problems)
  56  */
  57 typedef struct mac_driver_entry {
  58         __u32   block;          /* block number of starting block       */
  59         __u16   size;           /* size of driver, in 512 byte blocks   */
  60         __u16   type;           /* OS Type                              */
  61 } mac_driver_entry_t;
  62
  63
  64 #define MAC_PARTITION_MAGIC     0x504d
  65
  66 /* type field value for A/UX or other Unix partitions */
  67 #define APPLE_AUX_TYPE  "Apple_UNIX_SVR2"
  68
  69 /*
  70  * Each Partition Map entry (in blocks 1 ... N) has this format:
  71  */
  72 typedef struct mac_partition {
  73         __u16   signature;      /* expected to be MAC_PARTITION_MAGIC   */
  74         __u16   sig_pad;        /* reserved                             */
  75         __u32   map_count;      /* # blocks in partition map            */
  76         __u32   start_block;    /* abs. starting block # of partition   */
  77         __u32   block_count;    /* number of blocks in partition        */
  78         uchar   name[32];       /* partition name                       */
  79         uchar   type[32];       /* string type description              */
  80         __u32   data_start;     /* rel block # of first data block      */
  81         __u32   data_count;     /* number of data blocks                */
  82         __u32   status;         /* partition status bits                */
  83         __u32   boot_start;     /* first block of boot code             */
  84         __u32   boot_size;      /* size of boot code, in bytes          */
  85         __u32   boot_load;      /* boot code load address               */
  86         __u32   boot_load2;     /* reserved                             */
  87         __u32   boot_entry;     /* boot code entry point                */
  88         __u32   boot_entry2;    /* reserved                             */
  89         __u32   boot_cksum;     /* boot code checksum                   */
  90         uchar   processor[16];  /* Type of Processor                    */
  91         __u16   part_pad[188];  /* reserved                             */
  92 #ifdef CONFIG_ISO_PARTITION
  93         uchar   iso_dummy[2048];/* Reservere enough room for an ISO partition block to fit */
  94 #endif
  95 } mac_partition_t;
  96
  97 #define MAC_STATUS_BOOTABLE     8       /* partition is bootable */
  98
  99 #endif  /* _DISK_PART_MAC_H */