1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * (C) Copyright 2000 3*4882a593Smuzhiyun * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+ 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun /* 9*4882a593Smuzhiyun * See also Linux sources, fs/partitions/mac.h 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * This file describes structures and values related to the standard 12*4882a593Smuzhiyun * Apple SCSI disk partitioning scheme. For more information see: 13*4882a593Smuzhiyun * http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92 14*4882a593Smuzhiyun */ 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #ifndef _DISK_PART_MAC_H 17*4882a593Smuzhiyun #define _DISK_PART_MAC_H 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #define MAC_DRIVER_MAGIC 0x4552 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun /* 22*4882a593Smuzhiyun * Driver Descriptor Structure, in block 0. 23*4882a593Smuzhiyun * This block is (and shall remain) 512 bytes long. 24*4882a593Smuzhiyun * Note that there is an alignment problem for the driver descriptor map! 25*4882a593Smuzhiyun */ 26*4882a593Smuzhiyun typedef struct mac_driver_desc { 27*4882a593Smuzhiyun __u16 signature; /* expected to be MAC_DRIVER_MAGIC */ 28*4882a593Smuzhiyun __u16 blk_size; /* block size of device */ 29*4882a593Smuzhiyun __u32 blk_count; /* number of blocks on device */ 30*4882a593Smuzhiyun __u16 dev_type; /* device type */ 31*4882a593Smuzhiyun __u16 dev_id; /* device id */ 32*4882a593Smuzhiyun __u32 data; /* reserved */ 33*4882a593Smuzhiyun __u16 drvr_cnt; /* number of driver descriptor entries */ 34*4882a593Smuzhiyun __u16 drvr_map[247]; /* driver descriptor map */ 35*4882a593Smuzhiyun } mac_driver_desc_t; 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun /* 38*4882a593Smuzhiyun * Device Driver Entry 39*4882a593Smuzhiyun * (Cannot be included in mac_driver_desc because of alignment problems) 40*4882a593Smuzhiyun */ 41*4882a593Smuzhiyun typedef struct mac_driver_entry { 42*4882a593Smuzhiyun __u32 block; /* block number of starting block */ 43*4882a593Smuzhiyun __u16 size; /* size of driver, in 512 byte blocks */ 44*4882a593Smuzhiyun __u16 type; /* OS Type */ 45*4882a593Smuzhiyun } mac_driver_entry_t; 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun #define MAC_PARTITION_MAGIC 0x504d 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun /* type field value for A/UX or other Unix partitions */ 51*4882a593Smuzhiyun #define APPLE_AUX_TYPE "Apple_UNIX_SVR2" 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun /* 54*4882a593Smuzhiyun * Each Partition Map entry (in blocks 1 ... N) has this format: 55*4882a593Smuzhiyun */ 56*4882a593Smuzhiyun typedef struct mac_partition { 57*4882a593Smuzhiyun __u16 signature; /* expected to be MAC_PARTITION_MAGIC */ 58*4882a593Smuzhiyun __u16 sig_pad; /* reserved */ 59*4882a593Smuzhiyun __u32 map_count; /* # blocks in partition map */ 60*4882a593Smuzhiyun __u32 start_block; /* abs. starting block # of partition */ 61*4882a593Smuzhiyun __u32 block_count; /* number of blocks in partition */ 62*4882a593Smuzhiyun uchar name[32]; /* partition name */ 63*4882a593Smuzhiyun uchar type[32]; /* string type description */ 64*4882a593Smuzhiyun __u32 data_start; /* rel block # of first data block */ 65*4882a593Smuzhiyun __u32 data_count; /* number of data blocks */ 66*4882a593Smuzhiyun __u32 status; /* partition status bits */ 67*4882a593Smuzhiyun __u32 boot_start; /* first block of boot code */ 68*4882a593Smuzhiyun __u32 boot_size; /* size of boot code, in bytes */ 69*4882a593Smuzhiyun __u32 boot_load; /* boot code load address */ 70*4882a593Smuzhiyun __u32 boot_load2; /* reserved */ 71*4882a593Smuzhiyun __u32 boot_entry; /* boot code entry point */ 72*4882a593Smuzhiyun __u32 boot_entry2; /* reserved */ 73*4882a593Smuzhiyun __u32 boot_cksum; /* boot code checksum */ 74*4882a593Smuzhiyun uchar processor[16]; /* Type of Processor */ 75*4882a593Smuzhiyun __u16 part_pad[188]; /* reserved */ 76*4882a593Smuzhiyun #if CONFIG_IS_ENABLED(ISO_PARTITION) 77*4882a593Smuzhiyun uchar iso_dummy[2048];/* Reservere enough room for an ISO partition block to fit */ 78*4882a593Smuzhiyun #endif 79*4882a593Smuzhiyun } mac_partition_t; 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun #define MAC_STATUS_BOOTABLE 8 /* partition is bootable */ 82*4882a593Smuzhiyun 83*4882a593Smuzhiyun #endif /* _DISK_PART_MAC_H */ 84