[u-boot.git] / disk / part_amiga.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * (C) Copyright 2000
 * Hans-Joerg Frieden, Hyperion Entertainment
 * [email protected]
 */

#ifndef _DISK_PART_AMIGA_H
#define _DISK_PART_AMIGA_H

#if CONFIG_IS_ENABLED(ISO_PARTITION)
/* Make the buffers bigger if ISO partition support is enabled -- CD-ROMS
   have 2048 byte blocks */
#define DEFAULT_SECTOR_SIZE   2048
#else
#define DEFAULT_SECTOR_SIZE	512
#endif

#define AMIGA_BLOCK_LIMIT 16

/*
 * Amiga disks have a very open structure. The head for the partition table information
 * is stored somewhere within the first 16 blocks on disk, and is called the
 * "RigidDiskBlock".
 */

struct rigid_disk_block
{
    u32 id;
    u32 summed_longs;
    s32 chk_sum;
    u32 host_id;
    u32 block_bytes;
    u32 flags;
    u32 bad_block_list;
    u32 partition_list;
    u32 file_sys_header_list;
    u32 drive_init;
    u32 bootcode_block;
    u32 reserved_1[5];

    /* Physical drive geometry */
    u32 cylinders;
    u32 sectors;
    u32 heads;
    u32 interleave;
    u32 park;
    u32 reserved_2[3];
    u32 write_pre_comp;
    u32 reduced_write;
    u32 step_rate;
    u32 reserved_3[5];

    /* logical drive geometry */
    u32 rdb_blocks_lo;
    u32 rdb_blocks_hi;
    u32 lo_cylinder;
    u32 hi_cylinder;
    u32 cyl_blocks;
    u32 auto_park_seconds;
    u32 high_rdsk_block;
    u32 reserved_4;

    char disk_vendor[8];
    char disk_product[16];
    char disk_revision[4];
    char controller_vendor[8];
    char controller_product[16];
    char controller_revision[4];

    u32 reserved_5[10];
};

/*
 * Each partition on this drive is defined by such a block
 */

struct partition_block
{
    u32 id;
    u32 summed_longs;
    s32 chk_sum;
    u32 host_id;
    u32 next;
    u32 flags;
    u32 reserved_1[2];
    u32 dev_flags;
    char drive_name[32];
    u32 reserved_2[15];
    u32 environment[17];
    u32 reserved_3[15];
};

struct bootcode_block
{
    u32   id;
    u32   summed_longs;
    s32   chk_sum;
    u32   host_id;
    u32   next;
    u32   load_data[123];
};

#define AMIGA_ID_RDISK                  0x5244534B
#define AMIGA_ID_PART                   0x50415254
#define AMIGA_ID_BOOT                   0x424f4f54

/*
 * The environment array in the partition block
 * describes the partition
 */

struct amiga_part_geometry
{
    u32 table_size;
    u32 size_blocks;
    u32 unused1;
    u32 surfaces;
    u32 sector_per_block;
    u32 block_per_track;
    u32 reserved;
    u32 prealloc;
    u32 interleave;
    u32 low_cyl;
    u32 high_cyl;
    u32 num_buffers;
    u32 buf_mem_type;
    u32 max_transfer;
    u32 mask;
    s32 boot_priority;
    u32 dos_type;
    u32 baud;
    u32 control;
    u32 boot_blocks;
};

#endif /* _DISK_PART_AMIGA_H_ */
Commit	Line	Data
83d290c5	1	/* SPDX-License-Identifier: GPL-2.0+ */
c7de829c WD	2	/*
	3	* (C) Copyright 2000
	4	* Hans-Joerg Frieden, Hyperion Entertainment
	5	* [email protected]
c7de829c WD	6	*/
	7
	8	#ifndef _DISK_PART_AMIGA_H
	9	#define _DISK_PART_AMIGA_H
c7de829c	10
1acc0087	11	#if CONFIG_IS_ENABLED(ISO_PARTITION)
c7de829c WD	12	/* Make the buffers bigger if ISO partition support is enabled -- CD-ROMS
	13	have 2048 byte blocks */
	14	#define DEFAULT_SECTOR_SIZE 2048
	15	#else
	16	#define DEFAULT_SECTOR_SIZE 512
	17	#endif
	18
c7de829c WD	19	#define AMIGA_BLOCK_LIMIT 16
	20
	21	/*
	22	* Amiga disks have a very open structure. The head for the partition table information
	23	* is stored somewhere within the first 16 blocks on disk, and is called the
	24	* "RigidDiskBlock".
	25	*/
	26
8bde7f77	27	struct rigid_disk_block
c7de829c WD	28	{
	29	u32 id;
	30	u32 summed_longs;
	31	s32 chk_sum;
	32	u32 host_id;
	33	u32 block_bytes;
	34	u32 flags;
	35	u32 bad_block_list;
	36	u32 partition_list;
	37	u32 file_sys_header_list;
	38	u32 drive_init;
	39	u32 bootcode_block;
	40	u32 reserved_1[5];
8bde7f77	41
c7de829c WD	42	/* Physical drive geometry */
	43	u32 cylinders;
	44	u32 sectors;
	45	u32 heads;
	46	u32 interleave;
	47	u32 park;
	48	u32 reserved_2[3];
	49	u32 write_pre_comp;
	50	u32 reduced_write;
	51	u32 step_rate;
	52	u32 reserved_3[5];
	53
	54	/* logical drive geometry */
	55	u32 rdb_blocks_lo;
	56	u32 rdb_blocks_hi;
	57	u32 lo_cylinder;
	58	u32 hi_cylinder;
	59	u32 cyl_blocks;
	60	u32 auto_park_seconds;
	61	u32 high_rdsk_block;
	62	u32 reserved_4;
8bde7f77	63
c7de829c WD	64	char disk_vendor[8];
	65	char disk_product[16];
	66	char disk_revision[4];
	67	char controller_vendor[8];
	68	char controller_product[16];
	69	char controller_revision[4];
8bde7f77	70
c7de829c WD	71	u32 reserved_5[10];
	72	};
	73
	74	/*
	75	* Each partition on this drive is defined by such a block
	76	*/
	77
8bde7f77	78	struct partition_block
c7de829c WD	79	{
	80	u32 id;
	81	u32 summed_longs;
	82	s32 chk_sum;
	83	u32 host_id;
	84	u32 next;
	85	u32 flags;
	86	u32 reserved_1[2];
	87	u32 dev_flags;
	88	char drive_name[32];
	89	u32 reserved_2[15];
	90	u32 environment[17];
	91	u32 reserved_3[15];
	92	};
	93
8bde7f77	94	struct bootcode_block
c7de829c WD	95	{
	96	u32 id;
	97	u32 summed_longs;
	98	s32 chk_sum;
	99	u32 host_id;
	100	u32 next;
	101	u32 load_data[123];
	102	};
	103
c7de829c WD	104	#define AMIGA_ID_RDISK 0x5244534B
	105	#define AMIGA_ID_PART 0x50415254
	106	#define AMIGA_ID_BOOT 0x424f4f54
	107
8bde7f77	108	/*
c7de829c WD	109	* The environment array in the partition block
	110	* describes the partition
	111	*/
	112
8bde7f77	113	struct amiga_part_geometry
c7de829c WD	114	{
	115	u32 table_size;
	116	u32 size_blocks;
	117	u32 unused1;
	118	u32 surfaces;
	119	u32 sector_per_block;
	120	u32 block_per_track;
	121	u32 reserved;
	122	u32 prealloc;
	123	u32 interleave;
	124	u32 low_cyl;
	125	u32 high_cyl;
	126	u32 num_buffers;
	127	u32 buf_mem_type;
	128	u32 max_transfer;
	129	u32 mask;
	130	s32 boot_priority;
	131	u32 dos_type;
	132	u32 baud;
	133	u32 control;
	134	u32 boot_blocks;
	135	};
	136
	137	#endif /* _DISK_PART_AMIGA_H_ */