LXR uboot/disk/part

   1/*
   2 * (C) Copyright 2000
   3 * Hans-Joerg Frieden, Hyperion Entertainment
   4 * Hans-JoergF@hyperion-entertainment.com
   5 *
   6 * See file CREDITS for list of people who contributed to this
   7 * project.
   8 *
   9 * This program is free software; you can redistribute it and/or
  10 * modify it under the terms of the GNU General Public License as
  11 * published by the Free Software Foundation; either version 2 of
  12 * the License, or (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 * GNU General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU General Public License
  20 * along with this program; if not, write to the Free Software
  21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22 * MA 02111-1307 USA
  23 */
  24
  25#ifndef _DISK_PART_AMIGA_H
  26#define _DISK_PART_AMIGA_H
  27#include <common.h>
  28
  29#ifdef CONFIG_ISO_PARTITION
  30/* Make the buffers bigger if ISO partition support is enabled -- CD-ROMS
  31   have 2048 byte blocks */
  32#define DEFAULT_SECTOR_SIZE   2048
  33#else
  34#define DEFAULT_SECTOR_SIZE     512
  35#endif
  36
  37
  38#define AMIGA_BLOCK_LIMIT 16
  39
  40/*
  41 * Amiga disks have a very open structure. The head for the partition table information
  42 * is stored somewhere within the first 16 blocks on disk, and is called the
  43 * "RigidDiskBlock".
  44 */
  45
  46struct rigid_disk_block
  47{
  48    u32 id;
  49    u32 summed_longs;
  50    s32 chk_sum;
  51    u32 host_id;
  52    u32 block_bytes;
  53    u32 flags;
  54    u32 bad_block_list;
  55    u32 partition_list;
  56    u32 file_sys_header_list;
  57    u32 drive_init;
  58    u32 bootcode_block;
  59    u32 reserved_1[5];
  60
  61    /* Physical drive geometry */
  62    u32 cylinders;
  63    u32 sectors;
  64    u32 heads;
  65    u32 interleave;
  66    u32 park;
  67    u32 reserved_2[3];
  68    u32 write_pre_comp;
  69    u32 reduced_write;
  70    u32 step_rate;
  71    u32 reserved_3[5];
  72
  73    /* logical drive geometry */
  74    u32 rdb_blocks_lo;
  75    u32 rdb_blocks_hi;
  76    u32 lo_cylinder;
  77    u32 hi_cylinder;
  78    u32 cyl_blocks;
  79    u32 auto_park_seconds;
  80    u32 high_rdsk_block;
  81    u32 reserved_4;
  82
  83    char disk_vendor[8];
  84    char disk_product[16];
  85    char disk_revision[4];
  86    char controller_vendor[8];
  87    char controller_product[16];
  88    char controller_revision[4];
  89
  90    u32 reserved_5[10];
  91};
  92
  93/*
  94 * Each partition on this drive is defined by such a block
  95 */
  96
  97struct partition_block
  98{
  99    u32 id;
 100    u32 summed_longs;
 101    s32 chk_sum;
 102    u32 host_id;
 103    u32 next;
 104    u32 flags;
 105    u32 reserved_1[2];
 106    u32 dev_flags;
 107    char drive_name[32];
 108    u32 reserved_2[15];
 109    u32 environment[17];
 110    u32 reserved_3[15];
 111};
 112
 113struct bootcode_block
 114{
 115    u32   id;
 116    u32   summed_longs;
 117    s32   chk_sum;
 118    u32   host_id;
 119    u32   next;
 120    u32   load_data[123];
 121};
 122
 123
 124#define AMIGA_ID_RDISK                  0x5244534B
 125#define AMIGA_ID_PART                   0x50415254
 126#define AMIGA_ID_BOOT                   0x424f4f54
 127
 128/*
 129 * The environment array in the partition block
 130 * describes the partition
 131 */
 132
 133struct amiga_part_geometry
 134{
 135    u32 table_size;
 136    u32 size_blocks;
 137    u32 unused1;
 138    u32 surfaces;
 139    u32 sector_per_block;
 140    u32 block_per_track;
 141    u32 reserved;
 142    u32 prealloc;
 143    u32 interleave;
 144    u32 low_cyl;
 145    u32 high_cyl;
 146    u32 num_buffers;
 147    u32 buf_mem_type;
 148    u32 max_transfer;
 149    u32 mask;
 150    s32 boot_priority;
 151    u32 dos_type;
 152    u32 baud;
 153    u32 control;
 154    u32 boot_blocks;
 155};
 156
 157#endif /* _DISK_PART_AMIGA_H_ */
 158