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 */ 25 typedef 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 */ 40 typedef 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 */ 55 typedef 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