LXR uboot/disk/part

   1/*
   2 * (C) Copyright 2000
   3 * Hans-Joerg Frieden, Hyperion Entertainment
   4 * Hans-JoergF@hyperion-entertainment.com
   5 *
   6 * SPDX-License-Identifier:     GPL-2.0+
   7 */
   8
   9#ifndef _DISK_PART_AMIGA_H
  10#define _DISK_PART_AMIGA_H
  11#include <common.h>
  12
  13#ifdef CONFIG_ISO_PARTITION
  14/* Make the buffers bigger if ISO partition support is enabled -- CD-ROMS
  15   have 2048 byte blocks */
  16#define DEFAULT_SECTOR_SIZE   2048
  17#else
  18#define DEFAULT_SECTOR_SIZE     512
  19#endif
  20
  21
  22#define AMIGA_BLOCK_LIMIT 16
  23
  24/*
  25 * Amiga disks have a very open structure. The head for the partition table information
  26 * is stored somewhere within the first 16 blocks on disk, and is called the
  27 * "RigidDiskBlock".
  28 */
  29
  30struct rigid_disk_block
  31{
  32    u32 id;
  33    u32 summed_longs;
  34    s32 chk_sum;
  35    u32 host_id;
  36    u32 block_bytes;
  37    u32 flags;
  38    u32 bad_block_list;
  39    u32 partition_list;
  40    u32 file_sys_header_list;
  41    u32 drive_init;
  42    u32 bootcode_block;
  43    u32 reserved_1[5];
  44
  45    /* Physical drive geometry */
  46    u32 cylinders;
  47    u32 sectors;
  48    u32 heads;
  49    u32 interleave;
  50    u32 park;
  51    u32 reserved_2[3];
  52    u32 write_pre_comp;
  53    u32 reduced_write;
  54    u32 step_rate;
  55    u32 reserved_3[5];
  56
  57    /* logical drive geometry */
  58    u32 rdb_blocks_lo;
  59    u32 rdb_blocks_hi;
  60    u32 lo_cylinder;
  61    u32 hi_cylinder;
  62    u32 cyl_blocks;
  63    u32 auto_park_seconds;
  64    u32 high_rdsk_block;
  65    u32 reserved_4;
  66
  67    char disk_vendor[8];
  68    char disk_product[16];
  69    char disk_revision[4];
  70    char controller_vendor[8];
  71    char controller_product[16];
  72    char controller_revision[4];
  73
  74    u32 reserved_5[10];
  75};
  76
  77/*
  78 * Each partition on this drive is defined by such a block
  79 */
  80
  81struct partition_block
  82{
  83    u32 id;
  84    u32 summed_longs;
  85    s32 chk_sum;
  86    u32 host_id;
  87    u32 next;
  88    u32 flags;
  89    u32 reserved_1[2];
  90    u32 dev_flags;
  91    char drive_name[32];
  92    u32 reserved_2[15];
  93    u32 environment[17];
  94    u32 reserved_3[15];
  95};
  96
  97struct bootcode_block
  98{
  99    u32   id;
 100    u32   summed_longs;
 101    s32   chk_sum;
 102    u32   host_id;
 103    u32   next;
 104    u32   load_data[123];
 105};
 106
 107
 108#define AMIGA_ID_RDISK                  0x5244534B
 109#define AMIGA_ID_PART                   0x50415254
 110#define AMIGA_ID_BOOT                   0x424f4f54
 111
 112/*
 113 * The environment array in the partition block
 114 * describes the partition
 115 */
 116
 117struct amiga_part_geometry
 118{
 119    u32 table_size;
 120    u32 size_blocks;
 121    u32 unused1;
 122    u32 surfaces;
 123    u32 sector_per_block;
 124    u32 block_per_track;
 125    u32 reserved;
 126    u32 prealloc;
 127    u32 interleave;
 128    u32 low_cyl;
 129    u32 high_cyl;
 130    u32 num_buffers;
 131    u32 buf_mem_type;
 132    u32 max_transfer;
 133    u32 mask;
 134    s32 boot_priority;
 135    u32 dos_type;
 136    u32 baud;
 137    u32 control;
 138    u32 boot_blocks;
 139};
 140
 141#endif /* _DISK_PART_AMIGA_H_ */
 142