147 lines
6.2 KiB
C
147 lines
6.2 KiB
C
/***************************************************************************
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* Copyright (C) 2007 by Arep *
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* Support is provided through the forums at *
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* http://wii.console-tribe.com *
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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; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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/*! \file
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* \brief Memory dump functions specific to drives based on the Hitachi MN103 chip.
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*
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* Drives which are supported by this set of functions are, for instance, the LG GDR-8161B, GDR-8162B, GDR-8163B and GDR-8164B. All testing has been performed
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* with the latter model, so I'm not really sure about the others, but they should work ;). Please report any issues and more compatible drives!
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*
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* This file contains code derived from the work of Kevin East (SeventhSon), kev@kev.nu, http://www.kev.nu/360/ , which, in turn, derives from work by
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* a lot of other people. See his page for full details.
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include "misc.h"
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#include "dvd_drive.h"
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/*! \brief Memory offset at which the drive cache memory is mapped.
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*
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* During READ, sector data is cached beginning at this address.
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*/
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#define HITACHI_MEM_BASE 0x80000000
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/**
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* Dumps a single block (with arbitrary size) of the address space of the MN103 microcontroller within the Hitachi-LG Xbox 360 DVD drive and similar drives.
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* This function is derived from the work of Kevin East (SeventhSon), kev@kev.nu, http://www.kev.nu/360/.
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* @param dvd The DVD drive the command should be exectued on.
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* @param offset The absolute memory offset to start dumping.
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* @param block_size The block size for the dump.
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* @param buf Where to place the dumped data. This must have been setup by the caller to store up to block_size bytes.
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* @return < 0 if an error occurred, 0 otherwise.
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*/
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int hitachi_dvd_dump_memblock (dvd_drive *dvd, u_int32_t offset, u_int32_t block_size, u_int8_t *buf) {
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mmc_command mmc;
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int out;
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if (!buf) {
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error ("NULL buffer");
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out = -1;
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} else if (!block_size || block_size > 65535) {
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error ("invalid block_size (valid: 1 - 65535)");
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out = -2;
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} else {
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dvd_init_command (&mmc, buf, block_size, NULL);
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mmc.cmd[0] = 0xE7; // vendor specific command (discovered by DaveX)
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mmc.cmd[1] = 0x48; // H
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mmc.cmd[2] = 0x49; // I
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mmc.cmd[3] = 0x54; // T
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mmc.cmd[4] = 0x01; // read MCU memory sub-command
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mmc.cmd[6] = (unsigned char) ((offset & 0xFF000000) >> 24); // address MSB
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mmc.cmd[7] = (unsigned char) ((offset & 0x00FF0000) >> 16); // address
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mmc.cmd[8] = (unsigned char) ((offset & 0x0000FF00) >> 8); // address
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mmc.cmd[9] = (unsigned char) (offset & 0x000000FF); // address LSB
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mmc.cmd[10] = (unsigned char) ((block_size & 0xFF00) >> 8); // length MSB
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mmc.cmd[11] = (unsigned char) (block_size & 0x00FF); // length LSB
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out = dvd_execute_cmd (dvd, &mmc, false);
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}
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return (out);
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}
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/**
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* Dumps a given portion of the address space of the MN103 microcontroller within the Hitachi-LG Xbox 360 DVD drive.
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* WARNING: it can take a while to dump a lot of data.
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* @param dvd The DVD drive the command should be exectued on.
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* @param offset The absolute memory offset to start dumping.
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* @param block_len The number of blocks to dump.
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* @param block_size The block size for the dump.
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* @param buf Where to place the dumped data. This must have been setup by the caller to store up to block_size bytes.
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* @return < 0 if an error occurred, 0 otherwise.
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*/
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int hitachi_dvd_dump_mem_generic (dvd_drive *dvd, u_int32_t offset, u_int32_t block_len, u_int32_t block_size, u_int8_t *buf) {
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u_int32_t i;
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int r, out;
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if (!buf) {
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error ("NULL buffer");
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out = -1;
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} else {
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r = -10;
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for (i = 0; i < block_len; i++) {
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if ((r = hitachi_dvd_dump_memblock (dvd, offset + i * block_size, block_size, buf + i * block_size)) < 0) {
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error ("hitachi_dvd_read_block() failed with %d", r);
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break;
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}
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}
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out = r;
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}
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return (out);
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}
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/**
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* Dumps a given portion of the address space of the MN103 microcontroller within the Hitachi-LG Xbox 360 DVD drive, starting at the offset at which
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* sector data are cached.
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* WARNING: it can take a while to dump a lot of data.
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* @param dvd The DVD drive the command should be exectued on.
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* @param offset The memory offset to start dumping, relative to the cache start offset.
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* @param block_len The number of blocks to dump.
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* @param block_size The block size for the dump.
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* @param buf Where to place the dumped data. This must have been setup by the caller to store up to block_size bytes.
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* @return < 0 if an error occurred, 0 otherwise.
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*/
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int hitachi_dvd_dump_mem (dvd_drive *dvd, u_int32_t offset, u_int32_t block_len, u_int32_t block_size, u_int8_t *buf) {
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u_int32_t i;
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int r, out;
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if (!buf) {
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error ("NULL buffer");
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out = -1;
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} else {
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r = -10;
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for (i = 0; i < block_len; i++) {
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if ((r = hitachi_dvd_dump_memblock (dvd, HITACHI_MEM_BASE + offset + i * block_size, block_size, buf + i * block_size)) < 0) {
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error ("hitachi_dvd_read_block() failed with %d", r);
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break;
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}
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}
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out = r;
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}
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return (out);
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}
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