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