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