| 1 | /* ----------------------------------------------------------------------- * |
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| 2 | * |
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| 3 | * Copyright 2009-2010 Shao Miller - All Rights Reserved |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation, Inc., 53 Temple Place Ste 330, |
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| 8 | * Boston MA 02111-1307, USA; either version 2 of the License, or |
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| 9 | * (at your option) any later version; incorporated herein by reference. |
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| 10 | * |
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| 11 | * ----------------------------------------------------------------------- */ |
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| 12 | |
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| 13 | /* |
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| 14 | * eltorito.h |
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| 15 | * |
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| 16 | * EDD-4 El Torito structures and debugging routines |
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| 17 | */ |
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| 18 | |
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| 19 | #include <stdint.h> |
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| 20 | #include "compiler.h" |
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| 21 | |
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| 22 | /* EDD-4 Bootable Optical Disc Drive Boot Volume Descriptor */ |
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| 23 | MEMDISK_PACKED_PREFIX |
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| 24 | struct edd4_bvd { |
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| 25 | uint8_t boot_rec_ind; /* Boot Record Indicator */ |
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| 26 | uint8_t iso9660_id[5]; /* ISO9660 ID */ |
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| 27 | uint8_t ver; /* Descriptor Version */ |
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| 28 | uint8_t eltorito[32]; /* "EL TORITO" etc. */ |
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| 29 | uint8_t res1[32]; /* Reserved */ |
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| 30 | uint32_t boot_cat; /* Boot catalog sector */ |
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| 31 | uint8_t res2[1973]; /* Reserved */ |
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| 32 | } MEMDISK_PACKED_POSTFIX; |
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| 33 | |
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| 34 | MEMDISK_PACKED_PREFIX |
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| 35 | struct validation_entry { |
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| 36 | uint8_t header_id; /* Header ID */ |
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| 37 | uint8_t platform_id; /* Platform ID */ |
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| 38 | uint16_t res1; /* Reserved */ |
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| 39 | uint8_t id_string[24]; /* Manufacturer */ |
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| 40 | uint16_t checksum; /* Sums with whole record to zero */ |
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| 41 | uint8_t key55; /* Key byte 0x55 */ |
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| 42 | uint8_t keyAA; /* Key byte 0xAA */ |
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| 43 | } MEMDISK_PACKED_POSTFIX; |
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| 44 | |
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| 45 | MEMDISK_PACKED_PREFIX |
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| 46 | struct initial_entry { |
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| 47 | uint8_t header_id; /* Header ID */ |
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| 48 | uint8_t media_type; /* Media type */ |
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| 49 | uint16_t load_seg; /* Load segment */ |
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| 50 | uint8_t system_type; /* (Filesystem ID) */ |
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| 51 | uint8_t res1; /* Reserved */ |
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| 52 | uint16_t sect_count; /* Emulated sectors to load */ |
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| 53 | uint32_t load_block; /* Starting sector of image */ |
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| 54 | uint8_t res2[4]; /* Reserved */ |
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| 55 | } MEMDISK_PACKED_POSTFIX; |
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| 56 | |
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| 57 | /* EDD-4 Bootable Optical Disc Drive Boot Catalog (fixed-size portions) */ |
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| 58 | MEMDISK_PACKED_PREFIX |
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| 59 | struct edd4_bootcat { |
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| 60 | struct validation_entry validation_entry; |
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| 61 | struct initial_entry initial_entry; |
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| 62 | } MEMDISK_PACKED_POSTFIX; |
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| 63 | |
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| 64 | /* EDD-4 CD Specification Packet */ |
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| 65 | MEMDISK_PACKED_PREFIX |
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| 66 | struct edd4_cd_pkt { |
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| 67 | uint8_t size; /* Packet size */ |
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| 68 | uint8_t type; /* Boot media type (flags) */ |
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| 69 | uint8_t driveno; /* INT 13h drive number */ |
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| 70 | uint8_t controller; /* Controller index */ |
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| 71 | uint32_t start; /* Starting LBA of image */ |
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| 72 | uint16_t devno; /* Device number */ |
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| 73 | uint16_t userbuf; /* User buffer segment */ |
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| 74 | uint16_t load_seg; /* Load segment */ |
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| 75 | uint16_t sect_count; /* Emulated sectors to load */ |
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| 76 | uint8_t geom1; /* Cylinders bits 0 thru 7 */ |
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| 77 | uint8_t geom2; /* Sects/track 0 thru 5, cyls 8, 9 */ |
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| 78 | uint8_t geom3; /* Heads */ |
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| 79 | } MEMDISK_PACKED_POSTFIX; |
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| 80 | |
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