LXR uboot/disk/part

   1/*
   2 * (C) Copyright 2000
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8/*
   9 * See also Linux sources, fs/partitions/mac.h
  10 *
  11 * This file describes structures and values related to the standard
  12 * Apple SCSI disk partitioning scheme. For more information see:
  13 * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
  14 */
  15
  16#ifndef _DISK_PART_MAC_H
  17#define _DISK_PART_MAC_H
  18
  19#define MAC_DRIVER_MAGIC        0x4552
  20
  21/*
  22 * Driver Descriptor Structure, in block 0.
  23 * This block is (and shall remain) 512 bytes long.
  24 * Note that there is an alignment problem for the driver descriptor map!
  25 */
  26typedef struct mac_driver_desc {
  27        __u16   signature;      /* expected to be MAC_DRIVER_MAGIC      */
  28        __u16   blk_size;       /* block size of device                 */
  29        __u32   blk_count;      /* number of blocks on device           */
  30        __u16   dev_type;       /* device type                          */
  31        __u16   dev_id;         /* device id                            */
  32        __u32   data;           /* reserved                             */
  33        __u16   drvr_cnt;       /* number of driver descriptor entries  */
  34        __u16   drvr_map[247];  /* driver descriptor map                */
  35} mac_driver_desc_t;
  36
  37/*
  38 * Device Driver Entry
  39 * (Cannot be included in mac_driver_desc because of alignment problems)
  40 */
  41typedef struct mac_driver_entry {
  42        __u32   block;          /* block number of starting block       */
  43        __u16   size;           /* size of driver, in 512 byte blocks   */
  44        __u16   type;           /* OS Type                              */
  45} mac_driver_entry_t;
  46
  47
  48#define MAC_PARTITION_MAGIC     0x504d
  49
  50/* type field value for A/UX or other Unix partitions */
  51#define APPLE_AUX_TYPE  "Apple_UNIX_SVR2"
  52
  53/*
  54 * Each Partition Map entry (in blocks 1 ... N) has this format:
  55 */
  56typedef struct mac_partition {
  57        __u16   signature;      /* expected to be MAC_PARTITION_MAGIC   */
  58        __u16   sig_pad;        /* reserved                             */
  59        __u32   map_count;      /* # blocks in partition map            */
  60        __u32   start_block;    /* abs. starting block # of partition   */
  61        __u32   block_count;    /* number of blocks in partition        */
  62        uchar   name[32];       /* partition name                       */
  63        uchar   type[32];       /* string type description              */
  64        __u32   data_start;     /* rel block # of first data block      */
  65        __u32   data_count;     /* number of data blocks                */
  66        __u32   status;         /* partition status bits                */
  67        __u32   boot_start;     /* first block of boot code             */
  68        __u32   boot_size;      /* size of boot code, in bytes          */
  69        __u32   boot_load;      /* boot code load address               */
  70        __u32   boot_load2;     /* reserved                             */
  71        __u32   boot_entry;     /* boot code entry point                */
  72        __u32   boot_entry2;    /* reserved                             */
  73        __u32   boot_cksum;     /* boot code checksum                   */
  74        uchar   processor[16];  /* Type of Processor                    */
  75        __u16   part_pad[188];  /* reserved                             */
  76#ifdef CONFIG_ISO_PARTITION
  77        uchar   iso_dummy[2048];/* Reservere enough room for an ISO partition block to fit */
  78#endif
  79} mac_partition_t;
  80
  81#define MAC_STATUS_BOOTABLE     8       /* partition is bootable */
  82
  83#endif  /* _DISK_PART_MAC_H */
  84