[J-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
#include <common.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
	10	#include <common.h>
	11
1acc0087	12	#if CONFIG_IS_ENABLED(ISO_PARTITION)
c7de829c WD	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
8bde7f77	29	struct rigid_disk_block
c7de829c WD	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];
8bde7f77	43
c7de829c WD	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;
8bde7f77	65
c7de829c WD	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];
8bde7f77	72
c7de829c WD	73	u32 reserved_5[10];
	74	};
	75
	76	/*
	77	* Each partition on this drive is defined by such a block
	78	*/
	79
8bde7f77	80	struct partition_block
c7de829c WD	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
8bde7f77	96	struct bootcode_block
c7de829c WD	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
8bde7f77	111	/*
c7de829c WD	112	* The environment array in the partition block
	113	* describes the partition
	114	*/
	115
8bde7f77	116	struct amiga_part_geometry
c7de829c WD	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_ */