1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * fs/partitions/mac.h
4 */
5
6 #define MAC_PARTITION_MAGIC 0x504d
7
8 /* type field value for A/UX or other Unix partitions */
9 #define APPLE_AUX_TYPE "Apple_UNIX_SVR2"
10
11 struct mac_partition {
12 __be16 signature; /* expected to be MAC_PARTITION_MAGIC */
13 __be16 res1;
14 __be32 map_count; /* # blocks in partition map */
15 __be32 start_block; /* absolute starting block # of partition */
16 __be32 block_count; /* number of blocks in partition */
17 char name[32]; /* partition name */
18 char type[32]; /* string type description */
19 __be32 data_start; /* rel block # of first data block */
20 __be32 data_count; /* number of data blocks */
21 __be32 status; /* partition status bits */
22 __be32 boot_start;
23 __be32 boot_size;
24 __be32 boot_load;
25 __be32 boot_load2;
26 __be32 boot_entry;
27 __be32 boot_entry2;
28 __be32 boot_cksum;
29 char processor[16]; /* identifies ISA of boot */
30 /* there is more stuff after this that we don't need */
31 };
32
33 #define MAC_STATUS_BOOTABLE 8 /* partition is bootable */
34
35 #define MAC_DRIVER_MAGIC 0x4552
36
37 /* Driver descriptor structure, in block 0 */
38 struct mac_driver_desc {
39 __be16 signature; /* expected to be MAC_DRIVER_MAGIC */
40 __be16 block_size;
41 __be32 block_count;
42 /* ... more stuff */
43 };
44
45 int mac_partition(struct parsed_partitions *state);