35735c66e0
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14030 a1c6a512-1295-4272-9138-f99709370657
1350 lines
40 KiB
C
1350 lines
40 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2006-2007 Dave Chapman
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "parttypes.h"
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#include "ipodio.h"
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#include "ipodpatcher.h"
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#ifdef WITH_BOOTOBJS
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#include "ipod1g2g.h"
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#include "ipod3g.h"
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#include "ipod4g.h"
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#include "ipodmini.h"
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#include "ipodmini2g.h"
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#include "ipodcolor.h"
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#include "ipodnano.h"
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#include "ipodvideo.h"
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#endif
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extern int verbose;
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unsigned char* sectorbuf;
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/* The following string appears at the start of the firmware partition */
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static const char *apple_stop_sign = "{{~~ /-----\\ "\
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"{{~~ / \\ "\
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"{{~~| | "\
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"{{~~| S T O P | "\
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"{{~~| | "\
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"{{~~ \\ / "\
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"{{~~ \\-----/ "\
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"Copyright(C) 200"\
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"1 Apple Computer"\
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", Inc.----------"\
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"----------------"\
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"----------------"\
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"----------------"\
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"----------------"\
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"----------------"\
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"---------------";
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/* Windows requires the buffer for disk I/O to be aligned in memory on a
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multiple of the disk volume size - so we use a single global variable
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and initialise it with ipod_alloc_buf()
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*/
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char* get_parttype(int pt)
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{
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int i;
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static char unknown[]="Unknown";
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if (pt == -1) {
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return "HFS/HFS+";
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}
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i=0;
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while (parttypes[i].name != NULL) {
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if (parttypes[i].type == pt) {
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return (parttypes[i].name);
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}
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i++;
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}
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return unknown;
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}
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off_t filesize(int fd) {
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struct stat buf;
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if (fstat(fd,&buf) < 0) {
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perror("[ERR] Checking filesize of input file");
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return -1;
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} else {
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return(buf.st_size);
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}
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}
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/* Partition table parsing code taken from Rockbox */
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#define MAX_SECTOR_SIZE 2048
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#define SECTOR_SIZE 512
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unsigned short static inline le2ushort(unsigned char* buf)
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{
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unsigned short res = (buf[1] << 8) | buf[0];
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return res;
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}
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int static inline le2int(unsigned char* buf)
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{
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int32_t res = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
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return res;
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}
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int static inline be2int(unsigned char* buf)
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{
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int32_t res = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
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return res;
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}
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int static inline getint16le(char* buf)
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{
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int16_t res = (buf[1] << 8) | buf[0];
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return res;
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}
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void static inline short2le(unsigned short val, unsigned char* addr)
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{
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addr[0] = val & 0xFF;
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addr[1] = (val >> 8) & 0xff;
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}
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void static inline int2le(unsigned int val, unsigned char* addr)
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{
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addr[0] = val & 0xFF;
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addr[1] = (val >> 8) & 0xff;
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addr[2] = (val >> 16) & 0xff;
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addr[3] = (val >> 24) & 0xff;
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}
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void int2be(unsigned int val, unsigned char* addr)
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{
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addr[0] = (val >> 24) & 0xff;
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addr[1] = (val >> 16) & 0xff;
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addr[2] = (val >> 8) & 0xff;
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addr[3] = val & 0xFF;
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}
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#define BYTES2INT32(array,pos)\
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((long)array[pos] | ((long)array[pos+1] << 8 ) |\
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((long)array[pos+2] << 16 ) | ((long)array[pos+3] << 24 ))
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int read_partinfo(struct ipod_t* ipod, int silent)
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{
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int i;
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unsigned long count;
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count = ipod_read(ipod,sectorbuf, ipod->sector_size);
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if (count <= 0) {
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print_error(" Error reading from disk: ");
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return -1;
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}
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memset(ipod->pinfo, 0, sizeof(ipod->pinfo));
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if ((sectorbuf[510] == 0x55) && (sectorbuf[511] == 0xaa)) {
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/* DOS partition table */
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ipod->macpod = 0;
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/* parse partitions */
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for ( i = 0; i < 4; i++ ) {
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unsigned char* ptr = sectorbuf + 0x1be + 16*i;
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ipod->pinfo[i].type = ptr[4];
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ipod->pinfo[i].start = BYTES2INT32(ptr, 8);
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ipod->pinfo[i].size = BYTES2INT32(ptr, 12);
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/* extended? */
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if ( ipod->pinfo[i].type == 5 ) {
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/* not handled yet */
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}
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}
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} else if ((sectorbuf[0] == 'E') && (sectorbuf[1] == 'R')) {
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/* Apple Partition Map */
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/* APM parsing code based on the check_mac_partitions() function in
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ipodloader2 - written by Thomas Tempelmann and released
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under the GPL. */
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int blkNo = 1;
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int partBlkCount = 1;
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int partBlkSizMul = sectorbuf[2] / 2;
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int pmMapBlkCnt; /* # of blks in partition map */
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int pmPyPartStart; /* physical start blk of partition */
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int pmPartBlkCnt; /* # of blks in this partition */
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int i = 0;
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ipod->macpod = 1;
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memset(ipod->pinfo,0,sizeof(ipod->pinfo));
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while (blkNo <= partBlkCount) {
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if (ipod_seek(ipod, blkNo * partBlkSizMul * 512) < 0) {
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fprintf(stderr,"[ERR] Seek failed whilst reading APM\n");
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return -1;
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}
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count = ipod_read(ipod, sectorbuf, ipod->sector_size);
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if (count <= 0) {
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print_error(" Error reading from disk: ");
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return -1;
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}
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/* see if it's a partition entry */
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if ((sectorbuf[0] != 'P') || (sectorbuf[1] != 'M')) {
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/* end of partition table -> leave the loop */
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break;
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}
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/* Extract the interesting entries */
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pmMapBlkCnt = be2int(sectorbuf + 4);
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pmPyPartStart = be2int(sectorbuf + 8);
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pmPartBlkCnt = be2int(sectorbuf + 12);
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/* update the number of part map blocks */
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partBlkCount = pmMapBlkCnt;
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if (strncmp((char*)(sectorbuf + 48), "Apple_MDFW", 32)==0) {
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/* A Firmware partition */
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ipod->pinfo[i].start = pmPyPartStart;
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ipod->pinfo[i].size = pmPartBlkCnt;
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ipod->pinfo[i].type = 0;
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i++;
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} else if (strncmp((char*)(sectorbuf + 48), "Apple_HFS", 32)==0) {
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/* A HFS partition */
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ipod->pinfo[i].start = pmPyPartStart;
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ipod->pinfo[i].size = pmPartBlkCnt;
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ipod->pinfo[i].type = -1;
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i++;
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}
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blkNo++; /* read next partition map entry */
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}
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} else {
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if (!silent) fprintf(stderr,"[ERR] Bad boot sector signature\n");
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return -1;
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}
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/* Check that the partition table looks like an ipod:
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1) Partition 1 is of type 0 (Empty) but isn't empty.
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2) Partition 2 is of type 0xb or 0xc (winpod) or -1 (macpod)
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*/
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if ((ipod->pinfo[0].type != 0) || (ipod->pinfo[0].size == 0) ||
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((ipod->pinfo[1].type != 0xb) && (ipod->pinfo[1].type != 0xc) &&
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(ipod->pinfo[1].type != -1))) {
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if (!silent) fprintf(stderr,"[ERR] Partition layout is not an ipod\n");
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return -1;
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}
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ipod->start = ipod->pinfo[0].start*ipod->sector_size;
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return 0;
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}
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int read_partition(struct ipod_t* ipod, int outfile)
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{
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int res;
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unsigned long n;
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int bytesleft;
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int chunksize;
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int count = ipod->pinfo[0].size;
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if (ipod_seek(ipod, ipod->start) < 0) {
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return -1;
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}
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fprintf(stderr,"[INFO] Writing %d sectors to output file\n",count);
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bytesleft = count * ipod->sector_size;
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while (bytesleft > 0) {
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if (bytesleft > BUFFER_SIZE) {
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chunksize = BUFFER_SIZE;
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} else {
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chunksize = bytesleft;
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}
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n = ipod_read(ipod, sectorbuf, chunksize);
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if (n < 0) {
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return -1;
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}
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if (n < chunksize) {
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fprintf(stderr,
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"[ERR] Short read in disk_read() - requested %d, got %lu\n",
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chunksize,n);
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return -1;
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}
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bytesleft -= n;
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res = write(outfile,sectorbuf,n);
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if (res < 0) {
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perror("[ERR] write in disk_read");
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return -1;
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}
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if (res != n) {
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fprintf(stderr,
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"Short write - requested %lu, received %d - aborting.\n",n,res);
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return -1;
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}
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}
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fprintf(stderr,"[INFO] Done.\n");
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return 0;
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}
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int write_partition(struct ipod_t* ipod, int infile)
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{
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unsigned long res;
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int n;
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int bytesread;
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int byteswritten = 0;
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int eof;
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int padding = 0;
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if (ipod_seek(ipod, ipod->start) < 0) {
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return -1;
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}
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fprintf(stderr,"[INFO] Writing input file to device\n");
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bytesread = 0;
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eof = 0;
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while (!eof) {
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n = read(infile,sectorbuf,BUFFER_SIZE);
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if (n < 0) {
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perror("[ERR] read in disk_write");
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return -1;
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}
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if (n < BUFFER_SIZE) {
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eof = 1;
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/* We need to pad the last write to a multiple of SECTOR_SIZE */
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if ((n % ipod->sector_size) != 0) {
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padding = (ipod->sector_size-(n % ipod->sector_size));
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n += padding;
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}
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}
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bytesread += n;
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res = ipod_write(ipod, sectorbuf, n);
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if (res < 0) {
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print_error(" Error writing to disk: ");
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fprintf(stderr,"Bytes written: %d\n",byteswritten);
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return -1;
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}
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if (res != n) {
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fprintf(stderr,"[ERR] Short write - requested %d, received %lu - aborting.\n",n,res);
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return -1;
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}
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byteswritten += res;
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}
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fprintf(stderr,"[INFO] Wrote %d bytes plus %d bytes padding.\n",
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byteswritten-padding,padding);
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return 0;
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}
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char* ftypename[] = { "OSOS", "RSRC", "AUPD", "HIBE" };
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int diskmove(struct ipod_t* ipod, int delta)
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{
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int src_start;
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int src_end;
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int bytesleft;
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int chunksize;
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int i;
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int n;
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src_start = ipod->ipod_directory[1].devOffset + ipod->sector_size;
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src_end = (ipod->ipod_directory[ipod->nimages-1].devOffset + ipod->sector_size +
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ipod->ipod_directory[ipod->nimages-1].len +
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(ipod->sector_size-1)) & ~(ipod->sector_size-1);
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bytesleft = src_end - src_start;
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if (verbose) {
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fprintf(stderr,"[INFO] Need to move images 2-%d forward %08x bytes\n", ipod->nimages,delta);
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fprintf(stderr,"[VERB] src_start = %08x\n",src_start);
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fprintf(stderr,"[VERB] src_end = %08x\n",src_end);
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fprintf(stderr,"[VERB] dest_start = %08x\n",src_start+delta);
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fprintf(stderr,"[VERB] dest_end = %08x\n",src_end+delta);
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fprintf(stderr,"[VERB] bytes to copy = %08x\n",bytesleft);
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}
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while (bytesleft > 0) {
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if (bytesleft <= BUFFER_SIZE) {
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chunksize = bytesleft;
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} else {
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chunksize = BUFFER_SIZE;
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}
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if (verbose) {
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fprintf(stderr,"[VERB] Copying %08x bytes from %08x to %08x (absolute %08x to %08x)\n",
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chunksize,
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src_end-chunksize,
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src_end-chunksize+delta,
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(unsigned int)(ipod->start+src_end-chunksize),
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(unsigned int)(ipod->start+src_end-chunksize+delta));
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}
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if (ipod_seek(ipod, ipod->start+src_end-chunksize) < 0) {
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fprintf(stderr,"[ERR] Seek failed\n");
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return -1;
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}
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if ((n = ipod_read(ipod,sectorbuf,chunksize)) < 0) {
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perror("[ERR] Write failed\n");
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return -1;
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}
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if (n < chunksize) {
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fprintf(stderr,"[ERR] Short read - requested %d bytes, received %d\n",
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i,n);
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return -1;
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}
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if (ipod_seek(ipod, ipod->start+src_end-chunksize+delta) < 0) {
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fprintf(stderr,"[ERR] Seek failed\n");
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return -1;
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}
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if ((n = ipod_write(ipod,sectorbuf,chunksize)) < 0) {
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perror("[ERR] Write failed\n");
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return -1;
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}
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if (n < chunksize) {
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fprintf(stderr,"[ERR] Short write - requested %d bytes, received %d\n"
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,i,n);
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return -1;
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}
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src_end -= chunksize;
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bytesleft -= chunksize;
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}
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return 0;
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}
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|
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int add_bootloader(struct ipod_t* ipod, char* filename, int type)
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{
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int length;
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int i;
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int x;
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int n;
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int infile;
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int paddedlength;
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int entryOffset;
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int delta = 0;
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unsigned long chksum=0;
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unsigned long filechksum=0;
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unsigned char header[8]; /* Header for .ipod file */
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unsigned char* bootloader_buf;
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/* Calculate the position in the OSOS image where our bootloader will go. */
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if (ipod->ipod_directory[0].entryOffset>0) {
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/* Keep the same entryOffset */
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entryOffset = ipod->ipod_directory[0].entryOffset;
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} else {
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entryOffset = (ipod->ipod_directory[0].len+ipod->sector_size-1)&~(ipod->sector_size-1);
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}
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|
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#ifdef WITH_BOOTOBJS
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if (type == FILETYPE_INTERNAL) {
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fprintf(stderr,"[INFO] Using internal bootloader - %d bytes\n",ipod->bootloader_len);
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memcpy(sectorbuf+entryOffset,ipod->bootloader,ipod->bootloader_len);
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length = ipod->bootloader_len;
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paddedlength=(ipod->bootloader_len+ipod->sector_size-1)&~(ipod->sector_size-1);
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}
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else
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#endif
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{
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infile=open(filename,O_RDONLY);
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if (infile < 0) {
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fprintf(stderr,"[ERR] Couldn't open input file %s\n",filename);
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return -1;
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}
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|
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if (type==FILETYPE_DOT_IPOD) {
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|
/* First check that the input file is the correct type for this ipod. */
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n = read(infile,header,8);
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if (n < 8) {
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|
fprintf(stderr,"[ERR] Failed to read header from %s\n",filename);
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|
close(infile);
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return -1;
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|
}
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|
|
if (memcmp(header+4, ipod->modelname,4)!=0) {
|
|
fprintf(stderr,"[ERR] Model name in input file (%c%c%c%c) doesn't match ipod model (%s)\n",
|
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header[4],header[5],header[6],header[7], ipod->modelname);
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close(infile);
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return -1;
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}
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|
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filechksum = be2int(header);
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|
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length=filesize(infile)-8;
|
|
} else {
|
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length=filesize(infile);
|
|
}
|
|
paddedlength=(length+ipod->sector_size-1)&~(ipod->sector_size-1);
|
|
|
|
bootloader_buf = malloc(length);
|
|
if (bootloader_buf == NULL) {
|
|
fprintf(stderr,"[ERR] Can not allocate memory for bootloader\n");
|
|
return -1;
|
|
}
|
|
/* Now read our bootloader - we need to check it before modifying the partition*/
|
|
n = read(infile,bootloader_buf,length);
|
|
close(infile);
|
|
|
|
if (n < 0) {
|
|
fprintf(stderr,"[ERR] Couldn't read input file\n");
|
|
return -1;
|
|
}
|
|
|
|
if (type==FILETYPE_DOT_IPOD) {
|
|
/* Calculate and confirm bootloader checksum */
|
|
chksum = ipod->modelnum;
|
|
for (i = 0; i < length; i++) {
|
|
/* add 8 unsigned bits but keep a 32 bit sum */
|
|
chksum += bootloader_buf[i];
|
|
}
|
|
|
|
if (chksum == filechksum) {
|
|
fprintf(stderr,"[INFO] Checksum OK in %s\n",filename);
|
|
} else {
|
|
fprintf(stderr,"[ERR] Checksum in %s failed check\n",filename);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (entryOffset+paddedlength > BUFFER_SIZE) {
|
|
fprintf(stderr,"[ERR] Input file too big for buffer\n");
|
|
return -1;
|
|
}
|
|
|
|
if (verbose) {
|
|
fprintf(stderr,"[VERB] Original firmware begins at 0x%08x\n", ipod->ipod_directory[0].devOffset + ipod->sector_size);
|
|
fprintf(stderr,"[VERB] New entryOffset will be 0x%08x\n",entryOffset);
|
|
fprintf(stderr,"[VERB] End of bootloader will be at 0x%08x\n",entryOffset+paddedlength);
|
|
}
|
|
|
|
/* Check if we have enough space */
|
|
/* TODO: Check the size of the partition. */
|
|
if (ipod->nimages > 1) {
|
|
if ((ipod->ipod_directory[0].devOffset+entryOffset+paddedlength) >
|
|
ipod->ipod_directory[1].devOffset) {
|
|
fprintf(stderr,"[INFO] Moving images to create room for new firmware...\n");
|
|
delta = ipod->ipod_directory[0].devOffset + entryOffset+paddedlength
|
|
- ipod->ipod_directory[1].devOffset;
|
|
|
|
if (diskmove(ipod, delta) < 0) {
|
|
fprintf(stderr,"[ERR] Image movement failed.\n");
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* We have moved the partitions, now we can write our bootloader */
|
|
|
|
/* Firstly read the original firmware into sectorbuf */
|
|
fprintf(stderr,"[INFO] Reading original firmware...\n");
|
|
if (ipod_seek(ipod, ipod->fwoffset+ipod->ipod_directory[0].devOffset) < 0) {
|
|
fprintf(stderr,"[ERR] Seek failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if ((n = ipod_read(ipod,sectorbuf,entryOffset)) < 0) {
|
|
perror("[ERR] Read failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if (n < entryOffset) {
|
|
fprintf(stderr,"[ERR] Short read - requested %d bytes, received %d\n"
|
|
,i,n);
|
|
return -1;
|
|
}
|
|
|
|
#ifdef WITH_BOOTOBJS
|
|
if (type == FILETYPE_INTERNAL) {
|
|
memcpy(sectorbuf+entryOffset,ipod->bootloader,ipod->bootloader_len);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
memcpy(sectorbuf+entryOffset,bootloader_buf,length);
|
|
free(bootloader_buf);
|
|
}
|
|
|
|
/* Calculate new checksum for combined image */
|
|
chksum = 0;
|
|
for (i=0;i<entryOffset + length; i++) {
|
|
chksum += sectorbuf[i];
|
|
}
|
|
|
|
/* Now write the combined firmware image to the disk */
|
|
|
|
if (ipod_seek(ipod, ipod->fwoffset+ipod->ipod_directory[0].devOffset) < 0) {
|
|
fprintf(stderr,"[ERR] Seek failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if ((n = ipod_write(ipod,sectorbuf,entryOffset+paddedlength)) < 0) {
|
|
perror("[ERR] Write failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if (n < (entryOffset+paddedlength)) {
|
|
fprintf(stderr,"[ERR] Short read - requested %d bytes, received %d\n"
|
|
,i,n);
|
|
return -1;
|
|
}
|
|
|
|
fprintf(stderr,"[INFO] Wrote %d bytes to firmware partition\n",entryOffset+paddedlength);
|
|
|
|
x = ipod->diroffset % ipod->sector_size;
|
|
|
|
/* Read directory */
|
|
if (ipod_seek(ipod, ipod->start + ipod->diroffset - x) < 0) {
|
|
fprintf(stderr,"[ERR] Seek failed\n");
|
|
return -1;
|
|
}
|
|
|
|
n=ipod_read(ipod, sectorbuf, ipod->sector_size);
|
|
if (n < 0) {
|
|
fprintf(stderr,"[ERR] Directory read failed\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Update entries for image 0 */
|
|
int2le(entryOffset+length,sectorbuf+x+16);
|
|
int2le(entryOffset,sectorbuf+x+24);
|
|
int2le(chksum,sectorbuf+x+28);
|
|
int2le(0xffffffff,sectorbuf+x+36); /* loadAddr */
|
|
|
|
/* Update devOffset entries for other images, if we have moved them */
|
|
if (delta > 0) {
|
|
for (i=1;i<ipod->nimages;i++) {
|
|
int2le(le2int(sectorbuf+x+i*40+12)+delta,sectorbuf+x+i*40+12);
|
|
}
|
|
}
|
|
|
|
/* Write directory */
|
|
if (ipod_seek(ipod, ipod->start + ipod->diroffset - x) < 0) {
|
|
fprintf(stderr,"[ERR] Seek to %d failed\n", (int)(ipod->start+ipod->diroffset-x));
|
|
return -1;
|
|
}
|
|
n=ipod_write(ipod, sectorbuf, ipod->sector_size);
|
|
if (n < 0) {
|
|
fprintf(stderr,"[ERR] Directory write failed\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int delete_bootloader(struct ipod_t* ipod)
|
|
{
|
|
int length;
|
|
int i;
|
|
int x;
|
|
int n;
|
|
unsigned long chksum=0; /* 32 bit checksum - Rockbox .ipod style*/
|
|
|
|
/* Removing the bootloader involves adjusting the "length",
|
|
"chksum" and "entryOffset" values in the osos image's directory
|
|
entry. */
|
|
|
|
/* Firstly check we have a bootloader... */
|
|
|
|
if (ipod->ipod_directory[0].entryOffset == 0) {
|
|
fprintf(stderr,"[ERR] No bootloader found.\n");
|
|
return -1;
|
|
}
|
|
|
|
length = ipod->ipod_directory[0].entryOffset;
|
|
|
|
/* Read the firmware so we can calculate the checksum */
|
|
fprintf(stderr,"[INFO] Reading firmware (%d bytes)\n",length);
|
|
|
|
if (ipod_seek(ipod, ipod->fwoffset+ipod->ipod_directory[0].devOffset) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
i = (length+ipod->sector_size-1) & ~(ipod->sector_size-1);
|
|
fprintf(stderr,"[INFO] Padding read from 0x%08x to 0x%08x bytes\n",
|
|
length,i);
|
|
|
|
if ((n = ipod_read(ipod,sectorbuf,i)) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
if (n < i) {
|
|
fprintf(stderr,"[ERR] Short read - requested %d bytes, received %d\n",
|
|
i,n);
|
|
return -1;
|
|
}
|
|
|
|
chksum = 0;
|
|
for (i = 0; i < length; i++) {
|
|
/* add 8 unsigned bits but keep a 32 bit sum */
|
|
chksum += sectorbuf[i];
|
|
}
|
|
|
|
/* Now write back the updated directory entry */
|
|
|
|
fprintf(stderr,"[INFO] Updating firmware checksum\n");
|
|
|
|
x = ipod->diroffset % ipod->sector_size;
|
|
|
|
/* Read directory */
|
|
if (ipod_seek(ipod, ipod->start + ipod->diroffset - x) < 0) { return -1; }
|
|
|
|
n=ipod_read(ipod, sectorbuf, ipod->sector_size);
|
|
if (n < 0) { return -1; }
|
|
|
|
/* Update entries for image 0 */
|
|
int2le(length,sectorbuf+x+16);
|
|
int2le(0,sectorbuf+x+24);
|
|
int2le(chksum,sectorbuf+x+28);
|
|
|
|
/* Write directory */
|
|
if (ipod_seek(ipod, ipod->start + ipod->diroffset - x) < 0) { return -1; }
|
|
n=ipod_write(ipod, sectorbuf, ipod->sector_size);
|
|
if (n < 0) { return -1; }
|
|
|
|
return 0;
|
|
}
|
|
|
|
int write_firmware(struct ipod_t* ipod, char* filename, int type)
|
|
{
|
|
int length;
|
|
int i;
|
|
int x;
|
|
int n;
|
|
int infile;
|
|
int newsize;
|
|
int bytesavailable;
|
|
unsigned long chksum=0;
|
|
unsigned long filechksum=0;
|
|
unsigned char header[8]; /* Header for .ipod file */
|
|
|
|
#ifdef WITH_BOOTOBJS
|
|
if (type == FILETYPE_INTERNAL) {
|
|
fprintf(stderr,"[INFO] Using internal bootloader - %d bytes\n",ipod->bootloader_len);
|
|
length = ipod->bootloader_len;
|
|
infile = -1;
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
/* First check that the input file is the correct type for this ipod. */
|
|
infile=open(filename,O_RDONLY);
|
|
if (infile < 0) {
|
|
fprintf(stderr,"[ERR] Couldn't open input file %s\n",filename);
|
|
return -1;
|
|
}
|
|
|
|
if (type==FILETYPE_DOT_IPOD) {
|
|
n = read(infile,header,8);
|
|
if (n < 8) {
|
|
fprintf(stderr,"[ERR] Failed to read header from %s\n",filename);
|
|
close(infile);
|
|
return -1;
|
|
}
|
|
|
|
if (memcmp(header+4, ipod->modelname,4)!=0) {
|
|
fprintf(stderr,"[ERR] Model name in input file (%c%c%c%c) doesn't match ipod model (%s)\n",
|
|
header[4],header[5],header[6],header[7], ipod->modelname);
|
|
close(infile);
|
|
return -1;
|
|
}
|
|
|
|
filechksum = be2int(header);
|
|
|
|
length = filesize(infile)-8;
|
|
} else {
|
|
length = filesize(infile);
|
|
}
|
|
}
|
|
|
|
newsize=(length+ipod->sector_size-1)&~(ipod->sector_size-1);
|
|
|
|
fprintf(stderr,"[INFO] Padding input file from 0x%08x to 0x%08x bytes\n",
|
|
length,newsize);
|
|
|
|
if (newsize > BUFFER_SIZE) {
|
|
fprintf(stderr,"[ERR] Input file too big for buffer\n");
|
|
if (infile >= 0) close(infile);
|
|
return -1;
|
|
}
|
|
|
|
/* Check if we have enough space */
|
|
/* TODO: Check the size of the partition. */
|
|
if (ipod->nimages > 1) {
|
|
bytesavailable=ipod->ipod_directory[1].devOffset-ipod->ipod_directory[0].devOffset;
|
|
if (bytesavailable < newsize) {
|
|
fprintf(stderr,"[INFO] Moving images to create room for new firmware...\n");
|
|
|
|
/* TODO: Implement image movement */
|
|
fprintf(stderr,"[ERR] Image movement not yet implemented.\n");
|
|
close(infile);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
#ifdef WITH_BOOTOBJS
|
|
if (type == FILETYPE_INTERNAL) {
|
|
memcpy(sectorbuf,ipod->bootloader,ipod->bootloader_len);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
fprintf(stderr,"[INFO] Reading input file...\n");
|
|
/* We now know we have enough space, so write it. */
|
|
n = read(infile,sectorbuf,length);
|
|
if (n < 0) {
|
|
fprintf(stderr,"[ERR] Couldn't read input file\n");
|
|
close(infile);
|
|
return -1;
|
|
}
|
|
close(infile);
|
|
}
|
|
|
|
/* Pad the data with zeros */
|
|
memset(sectorbuf+length,0,newsize-length);
|
|
|
|
if (type==FILETYPE_DOT_IPOD) {
|
|
chksum = ipod->modelnum;
|
|
for (i = 0; i < length; i++) {
|
|
/* add 8 unsigned bits but keep a 32 bit sum */
|
|
chksum += sectorbuf[i];
|
|
}
|
|
|
|
if (chksum == filechksum) {
|
|
fprintf(stderr,"[INFO] Checksum OK in %s\n",filename);
|
|
} else {
|
|
fprintf(stderr,"[ERR] Checksum in %s failed check\n",filename);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (ipod_seek(ipod, ipod->fwoffset+ipod->ipod_directory[0].devOffset) < 0) {
|
|
fprintf(stderr,"[ERR] Seek failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if ((n = ipod_write(ipod,sectorbuf,newsize)) < 0) {
|
|
perror("[ERR] Write failed\n");
|
|
return -1;
|
|
}
|
|
|
|
if (n < newsize) {
|
|
fprintf(stderr,"[ERR] Short write - requested %d bytes, received %d\n"
|
|
,i,n);
|
|
return -1;
|
|
}
|
|
fprintf(stderr,"[INFO] Wrote %d bytes to firmware partition\n",n);
|
|
|
|
/* Now we need to update the "len", "entryOffset" and "chksum" fields */
|
|
chksum = 0;
|
|
for (i = 0; i < length; i++) {
|
|
/* add 8 unsigned bits but keep a 32 bit sum */
|
|
chksum += sectorbuf[i];
|
|
}
|
|
|
|
x = ipod->diroffset % ipod->sector_size;
|
|
|
|
/* Read directory */
|
|
if (ipod_seek(ipod, ipod->start + ipod->diroffset - x) < 0) { return -1; }
|
|
|
|
n=ipod_read(ipod, sectorbuf, ipod->sector_size);
|
|
if (n < 0) { return -1; }
|
|
|
|
/* Update entries for image 0 */
|
|
int2le(length,sectorbuf+x+16);
|
|
int2le(0,sectorbuf+x+24);
|
|
int2le(chksum,sectorbuf+x+28);
|
|
|
|
/* Write directory */
|
|
if (ipod_seek(ipod, ipod->start + ipod->diroffset - x) < 0) { return -1; }
|
|
n=ipod_write(ipod, sectorbuf, ipod->sector_size);
|
|
if (n < 0) { return -1; }
|
|
|
|
return 0;
|
|
}
|
|
|
|
int read_firmware(struct ipod_t* ipod, char* filename, int type)
|
|
{
|
|
int length;
|
|
int i;
|
|
int outfile;
|
|
int n;
|
|
unsigned long chksum=0; /* 32 bit checksum - Rockbox .ipod style*/
|
|
unsigned char header[8]; /* Header for .ipod file */
|
|
|
|
if (ipod->ipod_directory[0].entryOffset != 0) {
|
|
/* We have a bootloader... */
|
|
length = ipod->ipod_directory[0].entryOffset;
|
|
} else {
|
|
length = ipod->ipod_directory[0].len;
|
|
}
|
|
|
|
fprintf(stderr,"[INFO] Reading firmware (%d bytes)\n",length);
|
|
|
|
if (ipod_seek(ipod, ipod->fwoffset+ipod->ipod_directory[0].devOffset) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
i = (length+ipod->sector_size-1) & ~(ipod->sector_size-1);
|
|
fprintf(stderr,"[INFO] Padding read from 0x%08x to 0x%08x bytes\n",
|
|
length,i);
|
|
|
|
if ((n = ipod_read(ipod,sectorbuf,i)) < 0) {
|
|
return -1;
|
|
}
|
|
|
|
if (n < i) {
|
|
fprintf(stderr,"[ERR] Short read - requested %d bytes, received %d\n",
|
|
i,n);
|
|
return -1;
|
|
}
|
|
|
|
outfile = open(filename,O_CREAT|O_TRUNC|O_WRONLY|O_BINARY,0666);
|
|
if (outfile < 0) {
|
|
fprintf(stderr,"[ERR] Couldn't open file %s\n",filename);
|
|
return -1;
|
|
}
|
|
|
|
if (type == FILETYPE_DOT_IPOD) {
|
|
chksum = ipod->modelnum;
|
|
for (i = 0; i < length; i++) {
|
|
/* add 8 unsigned bits but keep a 32 bit sum */
|
|
chksum += sectorbuf[i];
|
|
}
|
|
|
|
int2be(chksum,header);
|
|
memcpy(header+4, ipod->modelname,4);
|
|
|
|
write(outfile,header,8);
|
|
}
|
|
|
|
write(outfile,sectorbuf,length);
|
|
close(outfile);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int read_directory(struct ipod_t* ipod)
|
|
{
|
|
int n;
|
|
int x;
|
|
unsigned char* p;
|
|
unsigned short version;
|
|
|
|
ipod->nimages=0;
|
|
|
|
/* Read firmware partition header (first 512 bytes of disk - but
|
|
let's read a whole sector) */
|
|
|
|
if (ipod_seek(ipod, ipod->start) < 0) {
|
|
fprintf(stderr,"[ERR] Seek to 0x%08x in read_directory() failed.\n",
|
|
(unsigned int)(ipod->start));
|
|
return -1;
|
|
}
|
|
|
|
n=ipod_read(ipod, sectorbuf, ipod->sector_size);
|
|
if (n < 0) {
|
|
fprintf(stderr,"[ERR] ipod_read(ipod,buf,0x%08x) failed in read_directory()\n", ipod->sector_size);
|
|
return -1;
|
|
}
|
|
|
|
if (memcmp(sectorbuf,apple_stop_sign,sizeof(apple_stop_sign))!=0) {
|
|
fprintf(stderr,"[ERR] Firmware partition doesn't contain Apple copyright, aborting.\n");
|
|
return -1;
|
|
}
|
|
|
|
if (memcmp(sectorbuf+0x100,"]ih[",4)!=0) {
|
|
fprintf(stderr,"[ERR] Bad firmware directory\n");
|
|
return -1;
|
|
}
|
|
|
|
version = le2ushort(sectorbuf+0x10a);
|
|
if ((version != 2) && (version != 3)) {
|
|
fprintf(stderr,"[ERR] Unknown firmware format version %04x\n",
|
|
version);
|
|
}
|
|
ipod->diroffset=le2int(sectorbuf+0x104) + 0x200;
|
|
|
|
/* diroffset may not be sector-aligned */
|
|
x = ipod->diroffset % ipod->sector_size;
|
|
|
|
/* Read directory */
|
|
if (ipod_seek(ipod, ipod->start + ipod->diroffset - x) < 0) {
|
|
fprintf(stderr,"[ERR] Seek to diroffset (%08x) failed.\n",(unsigned)ipod->diroffset);
|
|
return -1;
|
|
}
|
|
|
|
n=ipod_read(ipod, sectorbuf, ipod->sector_size);
|
|
if (n < 0) {
|
|
fprintf(stderr,"[ERR] Read of directory failed.\n");
|
|
return -1;
|
|
}
|
|
|
|
p = sectorbuf + x;
|
|
|
|
while ((ipod->nimages < MAX_IMAGES) && (p < (sectorbuf + x + 400)) &&
|
|
(memcmp(p,"!ATA",4)==0)) {
|
|
p+=4;
|
|
if (memcmp(p,"soso",4)==0) {
|
|
ipod->ipod_directory[ipod->nimages].ftype=FTYPE_OSOS;
|
|
} else if (memcmp(p,"crsr",4)==0) {
|
|
ipod->ipod_directory[ipod->nimages].ftype=FTYPE_RSRC;
|
|
} else if (memcmp(p,"dpua",4)==0) {
|
|
ipod->ipod_directory[ipod->nimages].ftype=FTYPE_AUPD;
|
|
} else if (memcmp(p,"ebih",4)==0) {
|
|
ipod->ipod_directory[ipod->nimages].ftype=FTYPE_HIBE;
|
|
} else {
|
|
fprintf(stderr,"[ERR] Unknown image type %c%c%c%c\n",
|
|
p[0],p[1],p[2],p[3]);
|
|
}
|
|
p+=4;
|
|
ipod->ipod_directory[ipod->nimages].id=le2int(p);
|
|
p+=4;
|
|
ipod->ipod_directory[ipod->nimages].devOffset=le2int(p);
|
|
p+=4;
|
|
ipod->ipod_directory[ipod->nimages].len=le2int(p);
|
|
p+=4;
|
|
ipod->ipod_directory[ipod->nimages].addr=le2int(p);
|
|
p+=4;
|
|
ipod->ipod_directory[ipod->nimages].entryOffset=le2int(p);
|
|
p+=4;
|
|
ipod->ipod_directory[ipod->nimages].chksum=le2int(p);
|
|
p+=4;
|
|
ipod->ipod_directory[ipod->nimages].vers=le2int(p);
|
|
p+=4;
|
|
ipod->ipod_directory[ipod->nimages].loadAddr=le2int(p);
|
|
p+=4;
|
|
ipod->nimages++;
|
|
}
|
|
|
|
if ((ipod->nimages > 1) && (version==2)) {
|
|
/* The 3g firmware image doesn't appear to have a version, so
|
|
let's make one up... Note that this is never written back to the
|
|
ipod, so it's OK to do. */
|
|
|
|
if (ipod->ipod_directory[0].vers == 0) { ipod->ipod_directory[0].vers = 3; }
|
|
|
|
ipod->fwoffset = ipod->start;
|
|
} else {
|
|
ipod->fwoffset = ipod->start + ipod->sector_size;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int list_images(struct ipod_t* ipod)
|
|
{
|
|
int i;
|
|
|
|
if (verbose) {
|
|
printf(" Type id devOffset len addr entryOffset chksum vers loadAddr devOffset+len\n");
|
|
for (i = 0 ; i < ipod->nimages; i++) {
|
|
printf("%d - %s 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x\n",i,
|
|
ftypename[ipod->ipod_directory[i].ftype],
|
|
ipod->ipod_directory[i].id,
|
|
ipod->ipod_directory[i].devOffset,
|
|
ipod->ipod_directory[i].len,
|
|
ipod->ipod_directory[i].addr,
|
|
ipod->ipod_directory[i].entryOffset,
|
|
ipod->ipod_directory[i].chksum,
|
|
ipod->ipod_directory[i].vers,
|
|
ipod->ipod_directory[i].loadAddr,
|
|
ipod->ipod_directory[i].devOffset+((ipod->ipod_directory[i].len+ipod->sector_size-1)&~(ipod->sector_size-1)));
|
|
}
|
|
}
|
|
|
|
printf("\n");
|
|
printf("Listing firmware partition contents:\n");
|
|
printf("\n");
|
|
|
|
for (i = 0 ; i < ipod->nimages; i++) {
|
|
printf("Image %d:\n",i+1);
|
|
switch(ipod->ipod_directory[i].ftype) {
|
|
case FTYPE_OSOS:
|
|
if (ipod->ipod_directory[i].entryOffset==0) {
|
|
printf(" Main firmware - %d bytes\n",
|
|
ipod->ipod_directory[i].len);
|
|
} else {
|
|
printf(" Main firmware - %d bytes\n",
|
|
ipod->ipod_directory[i].entryOffset);
|
|
printf(" Third-party bootloader - %d bytes\n",
|
|
ipod->ipod_directory[i].len-ipod->ipod_directory[i].entryOffset);
|
|
}
|
|
break;
|
|
default:
|
|
printf(" %s - %d bytes\n",
|
|
ftypename[ipod->ipod_directory[i].ftype],
|
|
ipod->ipod_directory[i].len);
|
|
}
|
|
}
|
|
printf("\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
int getmodel(struct ipod_t* ipod, int ipod_version)
|
|
{
|
|
switch (ipod_version) {
|
|
case 0x01:
|
|
ipod->modelstr="1st or 2nd Generation";
|
|
ipod->modelnum = 19;
|
|
ipod->modelname = "1g2g";
|
|
ipod->targetname = "ipod1g2g";
|
|
#ifdef WITH_BOOTOBJS
|
|
ipod->bootloader = ipod1g2g;
|
|
ipod->bootloader_len = LEN_ipod1g2g;
|
|
#endif
|
|
break;
|
|
case 0x02:
|
|
ipod->modelstr="3rd Generation";
|
|
ipod->modelnum = 7;
|
|
ipod->modelname = "ip3g";
|
|
ipod->targetname = "ipod3g";
|
|
#ifdef WITH_BOOTOBJS
|
|
ipod->bootloader = ipod3g;
|
|
ipod->bootloader_len = LEN_ipod3g;
|
|
#endif
|
|
break;
|
|
case 0x40:
|
|
ipod->modelstr="1st Generation Mini";
|
|
ipod->modelnum = 9;
|
|
ipod->modelname = "mini";
|
|
ipod->targetname = "ipodmini";
|
|
#ifdef WITH_BOOTOBJS
|
|
ipod->bootloader = ipodmini;
|
|
ipod->bootloader_len = LEN_ipodmini;
|
|
#endif
|
|
break;
|
|
case 0x50:
|
|
ipod->modelstr="4th Generation";
|
|
ipod->modelnum = 8;
|
|
ipod->modelname = "ip4g";
|
|
ipod->targetname = "ipod4g";
|
|
#ifdef WITH_BOOTOBJS
|
|
ipod->bootloader = ipod4g;
|
|
ipod->bootloader_len = LEN_ipod4g;
|
|
#endif
|
|
break;
|
|
case 0x60:
|
|
ipod->modelstr="Photo/Color";
|
|
ipod->modelnum = 3;
|
|
ipod->modelname = "ipco";
|
|
ipod->targetname = "ipodcolor";
|
|
#ifdef WITH_BOOTOBJS
|
|
ipod->bootloader = ipodcolor;
|
|
ipod->bootloader_len = LEN_ipodcolor;
|
|
#endif
|
|
break;
|
|
case 0x70:
|
|
ipod->modelstr="2nd Generation Mini";
|
|
ipod->modelnum = 11;
|
|
ipod->modelname = "mn2g";
|
|
ipod->targetname = "ipodmini2g";
|
|
#ifdef WITH_BOOTOBJS
|
|
ipod->bootloader = ipodmini2g;
|
|
ipod->bootloader_len = LEN_ipodmini2g;
|
|
#endif
|
|
break;
|
|
case 0xc0:
|
|
ipod->modelstr="1st Generation Nano";
|
|
ipod->modelnum = 4;
|
|
ipod->modelname = "nano";
|
|
ipod->targetname = "ipodnano";
|
|
#ifdef WITH_BOOTOBJS
|
|
ipod->bootloader = ipodnano;
|
|
ipod->bootloader_len = LEN_ipodnano;
|
|
#endif
|
|
break;
|
|
case 0xb0:
|
|
ipod->modelstr="Video (aka 5th Generation)";
|
|
ipod->modelnum = 5;
|
|
ipod->modelname = "ipvd";
|
|
ipod->targetname = "ipodvideo";
|
|
#ifdef WITH_BOOTOBJS
|
|
ipod->bootloader = ipodvideo;
|
|
ipod->bootloader_len = LEN_ipodvideo;
|
|
#endif
|
|
break;
|
|
default:
|
|
ipod->modelname = NULL;
|
|
ipod->modelnum = 0;
|
|
ipod->targetname = NULL;
|
|
#ifdef WITH_BOOTOBJS
|
|
ipod->bootloader = NULL;
|
|
ipod->bootloader_len = 0;
|
|
#endif
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int ipod_scan(struct ipod_t* ipod)
|
|
{
|
|
int i;
|
|
int n = 0;
|
|
int ipod_version;
|
|
char last_ipod[4096];
|
|
|
|
printf("[INFO] Scanning disk devices...\n");
|
|
|
|
for (i = 0; i <= 25 ; i++) {
|
|
#ifdef __WIN32__
|
|
sprintf(ipod->diskname,"\\\\.\\PhysicalDrive%d",i);
|
|
#elif defined(linux) || defined (__linux)
|
|
sprintf(ipod->diskname,"/dev/sd%c",'a'+i);
|
|
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) \
|
|
|| defined(__bsdi__) || defined(__DragonFly__)
|
|
sprintf(ipod->diskname,"/dev/da%d",i);
|
|
#elif defined(__APPLE__) && defined(__MACH__)
|
|
sprintf(ipod->diskname,"/dev/disk%d",i);
|
|
#else
|
|
#error No disk paths defined for this platform
|
|
#endif
|
|
if (ipod_open(ipod, 1) < 0) {
|
|
continue;
|
|
}
|
|
|
|
if (read_partinfo(ipod,1) < 0) {
|
|
continue;
|
|
}
|
|
|
|
if ((ipod->pinfo[0].start==0) || (ipod->pinfo[0].type != 0)) {
|
|
continue;
|
|
}
|
|
|
|
if (read_directory(ipod) < 0) {
|
|
continue;
|
|
}
|
|
|
|
ipod_version=(ipod->ipod_directory[0].vers>>8);
|
|
if (getmodel(ipod,ipod_version) < 0) {
|
|
continue;
|
|
}
|
|
|
|
#ifdef __WIN32__
|
|
printf("[INFO] Ipod found - %s (\"%s\") - disk device %d\n",
|
|
ipod->modelstr,ipod->macpod ? "macpod" : "winpod",i);
|
|
#else
|
|
printf("[INFO] Ipod found - %s (\"%s\") - %s\n",
|
|
ipod->modelstr,ipod->macpod ? "macpod" : "winpod",ipod->diskname);
|
|
#endif
|
|
n++;
|
|
strcpy(last_ipod,ipod->diskname);
|
|
ipod_close(ipod);
|
|
}
|
|
|
|
if (n==1) {
|
|
/* Remember the disk name */
|
|
strcpy(ipod->diskname,last_ipod);
|
|
}
|
|
return n;
|
|
}
|
|
|
|
static void put_int32le(uint32_t x, unsigned char* p)
|
|
{
|
|
p[0] = x & 0xff;
|
|
p[1] = (x >> 8) & 0xff;
|
|
p[2] = (x >> 16) & 0xff;
|
|
p[3] = (x >> 24) & 0xff;
|
|
}
|
|
|
|
int write_dos_partition_table(struct ipod_t* ipod)
|
|
{
|
|
unsigned char* p;
|
|
int i, n;
|
|
uint32_t type;
|
|
|
|
/* Only support 512-byte sectors at the moment */
|
|
if ( ipod->sector_size != 512 )
|
|
{
|
|
fprintf(stderr,"[ERR] Only ipods with 512 bytes per sector are supported.\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Firstly zero the entire MBR */
|
|
memset(sectorbuf, 0, ipod->sector_size);
|
|
|
|
/* Now add the partition info */
|
|
for (i=0; i < 4 ; i++)
|
|
{
|
|
p = sectorbuf + 0x1be + i*16;
|
|
|
|
/* Ensure first partition is type 0, and second is 0xb */
|
|
if (i==0) { type = 0; }
|
|
else if (i==1) { type = 0xb; }
|
|
else { type = ipod->pinfo[i].type; }
|
|
|
|
put_int32le(type, p + 4);
|
|
put_int32le(ipod->pinfo[i].start, p + 8);
|
|
put_int32le(ipod->pinfo[i].size, p + 12);
|
|
}
|
|
|
|
/* Finally add the magic */
|
|
sectorbuf[0x1fe] = 0x55;
|
|
sectorbuf[0x1ff] = 0xaa;
|
|
|
|
if (ipod_seek(ipod, 0) < 0) {
|
|
fprintf(stderr,"[ERR] Seek failed writing MBR\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Write MBR */
|
|
if ((n = ipod_write(ipod, sectorbuf, ipod->sector_size)) < 0) {
|
|
perror("[ERR] Write failed\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|