LXR uboot/disk/part

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