LXR uboot/disk/part

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