1 /* 2 * (C) Copyright 2000 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 /* 9 * See also Linux sources, fs/partitions/mac.h 10 * 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 14 */ 15 16 #ifndef _DISK_PART_MAC_H 17 #define _DISK_PART_MAC_H 18 19 #define MAC_DRIVER_MAGIC 0x4552 20 21 /* 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! 25 */ 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 */ 35 } mac_driver_desc_t; 36 37 /* 38 * Device Driver Entry 39 * (Cannot be included in mac_driver_desc because of alignment problems) 40 */ 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 */ 45 } mac_driver_entry_t; 46 47 48 #define MAC_PARTITION_MAGIC 0x504d 49 50 /* type field value for A/UX or other Unix partitions */ 51 #define APPLE_AUX_TYPE "Apple_UNIX_SVR2" 52 53 /* 54 * Each Partition Map entry (in blocks 1 ... N) has this format: 55 */ 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 #ifdef CONFIG_ISO_PARTITION 77 uchar iso_dummy[2048];/* Reservere enough room for an ISO partition block to fit */ 78 #endif 79 } mac_partition_t; 80 81 #define MAC_STATUS_BOOTABLE 8 /* partition is bootable */ 82 83 #endif /* _DISK_PART_MAC_H */ 84