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