1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * (C) Copyright 2000
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6
7/*
8 * See also Linux sources, fs/partitions/mac.h
9 *
10 * This file describes structures and values related to the standard
11 * Apple SCSI disk partitioning scheme. For more information see:
12 * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
13 */
14
15#ifndef	_DISK_PART_MAC_H
16#define	_DISK_PART_MAC_H
17
18#define MAC_DRIVER_MAGIC	0x4552
19
20/*
21 * Driver Descriptor Structure, in block 0.
22 * This block is (and shall remain) 512 bytes long.
23 * Note that there is an alignment problem for the driver descriptor map!
24 */
25typedef struct mac_driver_desc {
26	__u16	signature;	/* expected to be MAC_DRIVER_MAGIC	*/
27	__u16	blk_size;	/* block size of device			*/
28	__u32	blk_count;	/* number of blocks on device		*/
29	__u16	dev_type;	/* device type				*/
30	__u16	dev_id;		/* device id				*/
31	__u32	data;		/* reserved				*/
32	__u16	drvr_cnt;	/* number of driver descriptor entries	*/
33	__u16	drvr_map[247];	/* driver descriptor map		*/
34} mac_driver_desc_t;
35
36/*
37 * Device Driver Entry
38 * (Cannot be included in mac_driver_desc because of alignment problems)
39 */
40typedef struct mac_driver_entry {
41	__u32	block;		/* block number of starting block	*/
42	__u16	size;		/* size of driver, in 512 byte blocks	*/
43	__u16	type;		/* OS Type				*/
44} mac_driver_entry_t;
45
46
47#define MAC_PARTITION_MAGIC	0x504d
48
49/* type field value for A/UX or other Unix partitions */
50#define APPLE_AUX_TYPE	"Apple_UNIX_SVR2"
51
52/*
53 * Each Partition Map entry (in blocks 1 ... N) has this format:
54 */
55typedef struct mac_partition {
56	__u16	signature;	/* expected to be MAC_PARTITION_MAGIC	*/
57	__u16	sig_pad;	/* reserved				*/
58	__u32	map_count;	/* # blocks in partition map		*/
59	__u32	start_block;	/* abs. starting block # of partition	*/
60	__u32	block_count;	/* number of blocks in partition	*/
61	uchar	name[32];	/* partition name			*/
62	uchar	type[32];	/* string type description		*/
63	__u32	data_start;	/* rel block # of first data block	*/
64	__u32	data_count;	/* number of data blocks		*/
65	__u32	status;		/* partition status bits		*/
66	__u32	boot_start;	/* first block of boot code		*/
67	__u32	boot_size;	/* size of boot code, in bytes		*/
68	__u32	boot_load;	/* boot code load address		*/
69	__u32	boot_load2;	/* reserved				*/
70	__u32	boot_entry;	/* boot code entry point		*/
71	__u32	boot_entry2;	/* reserved				*/
72	__u32	boot_cksum;	/* boot code checksum			*/
73	uchar	processor[16];	/* Type of Processor			*/
74	__u16	part_pad[188];	/* reserved				*/
75#if CONFIG_IS_ENABLED(ISO_PARTITION)
76	uchar   iso_dummy[2048];/* Reservere enough room for an ISO partition block to fit */
77#endif
78} mac_partition_t;
79
80#define MAC_STATUS_BOOTABLE	8	/* partition is bootable */
81
82#endif	/* _DISK_PART_MAC_H */
83