81 lines
3.2 KiB
C
81 lines
3.2 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2009-2010 Shao Miller - All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
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* Boston MA 02111-1307, USA; either version 2 of the License, or
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* (at your option) any later version; incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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/*
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* eltorito.h
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*
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* EDD-4 El Torito structures and debugging routines
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*/
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#include <stdint.h>
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#include "compiler.h"
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/* EDD-4 Bootable Optical Disc Drive Boot Volume Descriptor */
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MEMDISK_PACKED_PREFIX
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struct edd4_bvd {
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uint8_t boot_rec_ind; /* Boot Record Indicator */
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uint8_t iso9660_id[5]; /* ISO9660 ID */
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uint8_t ver; /* Descriptor Version */
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uint8_t eltorito[32]; /* "EL TORITO" etc. */
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uint8_t res1[32]; /* Reserved */
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uint32_t boot_cat; /* Boot catalog sector */
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uint8_t res2[1973]; /* Reserved */
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} MEMDISK_PACKED_POSTFIX;
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MEMDISK_PACKED_PREFIX
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struct validation_entry {
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uint8_t header_id; /* Header ID */
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uint8_t platform_id; /* Platform ID */
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uint16_t res1; /* Reserved */
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uint8_t id_string[24]; /* Manufacturer */
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uint16_t checksum; /* Sums with whole record to zero */
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uint8_t key55; /* Key byte 0x55 */
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uint8_t keyAA; /* Key byte 0xAA */
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} MEMDISK_PACKED_POSTFIX;
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MEMDISK_PACKED_PREFIX
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struct initial_entry {
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uint8_t header_id; /* Header ID */
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uint8_t media_type; /* Media type */
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uint16_t load_seg; /* Load segment */
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uint8_t system_type; /* (Filesystem ID) */
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uint8_t res1; /* Reserved */
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uint16_t sect_count; /* Emulated sectors to load */
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uint32_t load_block; /* Starting sector of image */
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uint8_t res2[4]; /* Reserved */
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} MEMDISK_PACKED_POSTFIX;
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/* EDD-4 Bootable Optical Disc Drive Boot Catalog (fixed-size portions) */
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MEMDISK_PACKED_PREFIX
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struct edd4_bootcat {
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struct validation_entry validation_entry;
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struct initial_entry initial_entry;
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} MEMDISK_PACKED_POSTFIX;
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/* EDD-4 CD Specification Packet */
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MEMDISK_PACKED_PREFIX
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struct edd4_cd_pkt {
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uint8_t size; /* Packet size */
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uint8_t type; /* Boot media type (flags) */
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uint8_t driveno; /* INT 13h drive number */
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uint8_t controller; /* Controller index */
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uint32_t start; /* Starting LBA of image */
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uint16_t devno; /* Device number */
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uint16_t userbuf; /* User buffer segment */
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uint16_t load_seg; /* Load segment */
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uint16_t sect_count; /* Emulated sectors to load */
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uint8_t geom1; /* Cylinders bits 0 thru 7 */
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uint8_t geom2; /* Sects/track 0 thru 5, cyls 8, 9 */
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uint8_t geom3; /* Heads */
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} MEMDISK_PACKED_POSTFIX;
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