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/* ----------------------------------------------------------------------- *
*
* Copyright 2001-2009 H. Peter Anvin - All Rights Reserved
* Copyright 2009-2010 Intel Corporation; author: H. Peter Anvin
* Portions copyright 2009-2010 Shao Miller
* [El Torito code, mBFT, "safe hook"]
*
* 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.
*
* ----------------------------------------------------------------------- */
/* These structures are common to MEMDISK and MDISKCHK.COM */
MEMDISK_PACKED_PREFIX
struct safe_hook {
uint8_t jump[3]; /* Max. three bytes for jump */
uint8_t signature[8]; /* "$INT13SF" */
uint8_t vendor[8]; /* "MEMDISK " */
uint32_t old_hook; /* SEG:OFF for previous INT 13h hook */
uint32_t flags; /* "Safe hook" flags */
/* The next field is a MEMDISK extension to the "safe hook" structure */
uint32_t mBFT; /* Offset from hook to the mBFT; refilled
* by setup() with the physical address
*/
} MEMDISK_PACKED_POSTFIX;
/* Requirement for struct acpi_description_header */
#include "../memdisk/acpi.h"
MEMDISK_PACKED_PREFIX
struct mBFT {
struct acpi_description_header acpi;
uint32_t safe_hook; /* "Safe hook" physical address */
} MEMDISK_PACKED_POSTFIX;
MEMDISK_PACKED_PREFIX
/* EDD disk parameter table */
struct edd_dpt {
uint16_t len; /* Length of table */
uint16_t flags; /* Information flags */
uint32_t c; /* Physical cylinders (count!) */
uint32_t h; /* Physical heads (count!) */
uint32_t s; /* Physical sectors/track (count!) */
uint64_t sectors; /* Total sectors */
uint16_t bytespersec; /* Bytes/sector */
uint16_t dpte_off, dpte_seg; /* DPTE pointer */
uint16_t dpikey; /* Device Path Info magic */
uint8_t dpilen; /* Device Path Info length */
uint8_t res1; /* Reserved */
uint16_t res2; /* Reserved */
uint8_t bustype[4]; /* Host bus type */
uint8_t inttype[8]; /* Interface type */
uint64_t intpath; /* Interface path */
uint64_t devpath[2]; /* Device path (double QuadWord!) */
uint8_t res3; /* Reserved */
uint8_t chksum; /* DPI checksum */
} MEMDISK_PACKED_POSTFIX;
/* Requirement for struct edd4_cd_pkt */
#include "../memdisk/eltorito.h"
MEMDISK_PACKED_PREFIX
struct patch_area {
uint32_t diskbuf;
uint32_t disksize;
uint16_t cmdline_off, cmdline_seg;
uint32_t oldint13;
uint32_t oldint15;
uint16_t olddosmem;
uint8_t bootloaderid;
uint8_t _pad1;
uint16_t dpt_ptr;
/* End of the official MemDisk_Info */
uint8_t driveshiftlimit; /* Do not shift drives above this region */
uint8_t _pad2; /* Pad to DWORD */
uint16_t _pad3; /* Pad to QWORD */
uint16_t memint1588;
uint16_t cylinders;
uint16_t heads;
uint32_t sectors;
uint32_t mem1mb;
uint32_t mem16mb;
uint8_t driveno;
uint8_t drivetype;
uint8_t drivecnt;
uint8_t configflags;
#define CONFIG_READONLY 0x01
#define CONFIG_RAW 0x02
#define CONFIG_SAFEINT 0x04
#define CONFIG_BIGRAW 0x08 /* MUST be 8! */
#define CONFIG_MODEMASK 0x0e
uint16_t mystack;
uint16_t statusptr;
dpt_t dpt;
struct edd_dpt edd_dpt;
struct edd4_cd_pkt cd_pkt; /* Only really in a memdisk_iso_* hook */
} MEMDISK_PACKED_POSTFIX;
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