mirror of
https://github.com/Rockbox/rockbox.git
synced 2025-10-26 23:36:37 -04:00
330 lines
9.8 KiB
C
330 lines
9.8 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2005 by Linus Nielsen Feltzing
|
|
*
|
|
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "mkboot.h"
|
|
|
|
#define SECTOR_SIZE 0x200
|
|
#define RAW_IMAGE_SIZE 0x400000
|
|
#define TOTAL_IMAGE_SIZE (RAW_IMAGE_SIZE + HEADER2_SIZE)
|
|
#define ALIGNED_IMAGE_SIZE (TOTAL_IMAGE_SIZE + SECTOR_SIZE - (TOTAL_IMAGE_SIZE % SECTOR_SIZE))
|
|
#define HEADER1_SIZE SECTOR_SIZE
|
|
#define HEADER2_SIZE 0x20
|
|
|
|
#ifndef RBUTIL
|
|
static void usage(void)
|
|
{
|
|
printf("usage: mkboot <target> <firmware file> <boot file> <output file>\n");
|
|
printf("available targets:\n"
|
|
"\t-h100 Iriver H1x0\n"
|
|
"\t-h300 Iriver H3x0\n"
|
|
"\t-iax5 iAudio X5\n"
|
|
"\t-iam5 iAudio M5\n");
|
|
|
|
exit(1);
|
|
}
|
|
#endif
|
|
|
|
#ifndef RBUTIL
|
|
int main(int argc, char *argv[])
|
|
{
|
|
if(argc != 5)
|
|
{
|
|
usage();
|
|
return 1;
|
|
}
|
|
|
|
if ( ! strcmp(argv[1], "-h100"))
|
|
return mkboot_iriver(argv[2], argv[3], argv[4], 0x1f0000);
|
|
|
|
if ( ! strcmp(argv[1], "-h300"))
|
|
return mkboot_iriver(argv[2], argv[3], argv[4], 0x3f0000);
|
|
|
|
if ( ! strcmp(argv[1], "-iax5"))
|
|
return mkboot_iaudio(argv[2], argv[3], argv[4], 0);
|
|
|
|
if ( ! strcmp(argv[1], "-iam5"))
|
|
return mkboot_iaudio(argv[2], argv[3], argv[4], 1);
|
|
|
|
usage();
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* initial header size plus
|
|
* the rounded up size (includes the raw data and its length header) plus
|
|
* the checksums for the raw data and its length header
|
|
*/
|
|
static unsigned char image[ALIGNED_IMAGE_SIZE + HEADER1_SIZE + ALIGNED_IMAGE_SIZE / SECTOR_SIZE];
|
|
|
|
int mkboot_iriver(const char* infile, const char* bootfile, const char* outfile, int origin)
|
|
{
|
|
FILE *f;
|
|
int i;
|
|
int len;
|
|
int actual_length, total_length, binary_length, num_chksums;
|
|
|
|
memset(image, 0xff, sizeof(image));
|
|
|
|
/* First, read the iriver original firmware into the image */
|
|
f = fopen(infile, "rb");
|
|
if(!f) {
|
|
perror(infile);
|
|
return -1;
|
|
}
|
|
|
|
i = fread(image, 1, 16, f);
|
|
if(i < 16) {
|
|
perror(infile);
|
|
fclose(f);
|
|
return -2;
|
|
}
|
|
|
|
/* This is the length of the binary image without the scrambling
|
|
overhead (but including the ESTFBINR header) */
|
|
binary_length = image[4] + (image[5] << 8) +
|
|
(image[6] << 16) + (image[7] << 24);
|
|
|
|
/* Read the rest of the binary data, but not the checksum block */
|
|
len = binary_length+0x200-16;
|
|
i = fread(image+16, 1, len, f);
|
|
if(i < len) {
|
|
perror(infile);
|
|
fclose(f);
|
|
return -3;
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
/* Now, read the boot loader into the image */
|
|
f = fopen(bootfile, "rb");
|
|
if(!f) {
|
|
perror(bootfile);
|
|
return -4;
|
|
}
|
|
|
|
fseek(f, 0, SEEK_END);
|
|
len = ftell(f);
|
|
|
|
fseek(f, 0, SEEK_SET);
|
|
|
|
i = fread(image+0x220 + origin, 1, len, f);
|
|
if(i < len) {
|
|
perror(bootfile);
|
|
fclose(f);
|
|
return -5;
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
f = fopen(outfile, "wb");
|
|
if(!f) {
|
|
perror(outfile);
|
|
return -6;
|
|
}
|
|
|
|
/* Patch the reset vector to start the boot loader */
|
|
image[0x220 + 4] = image[origin + 0x220 + 4];
|
|
image[0x220 + 5] = image[origin + 0x220 + 5];
|
|
image[0x220 + 6] = image[origin + 0x220 + 6];
|
|
image[0x220 + 7] = image[origin + 0x220 + 7];
|
|
|
|
/* This is the actual length of the binary, excluding all headers */
|
|
actual_length = origin + len;
|
|
|
|
/* Patch the ESTFBINR header */
|
|
image[0x20c] = (actual_length >> 24) & 0xff;
|
|
image[0x20d] = (actual_length >> 16) & 0xff;
|
|
image[0x20e] = (actual_length >> 8) & 0xff;
|
|
image[0x20f] = actual_length & 0xff;
|
|
|
|
image[0x21c] = (actual_length >> 24) & 0xff;
|
|
image[0x21d] = (actual_length >> 16) & 0xff;
|
|
image[0x21e] = (actual_length >> 8) & 0xff;
|
|
image[0x21f] = actual_length & 0xff;
|
|
|
|
/* This is the length of the binary, including the ESTFBINR header and
|
|
rounded up to the nearest 0x200 boundary */
|
|
binary_length = (actual_length + 0x20 + 0x1ff) & 0xfffffe00;
|
|
|
|
/* The number of checksums, i.e number of 0x200 byte blocks */
|
|
num_chksums = binary_length / 0x200;
|
|
|
|
/* The total file length, including all headers and checksums */
|
|
total_length = binary_length + num_chksums + 0x200;
|
|
|
|
/* Patch the scrambler header with the new length info */
|
|
image[0] = total_length & 0xff;
|
|
image[1] = (total_length >> 8) & 0xff;
|
|
image[2] = (total_length >> 16) & 0xff;
|
|
image[3] = (total_length >> 24) & 0xff;
|
|
|
|
image[4] = binary_length & 0xff;
|
|
image[5] = (binary_length >> 8) & 0xff;
|
|
image[6] = (binary_length >> 16) & 0xff;
|
|
image[7] = (binary_length >> 24) & 0xff;
|
|
|
|
image[8] = num_chksums & 0xff;
|
|
image[9] = (num_chksums >> 8) & 0xff;
|
|
image[10] = (num_chksums >> 16) & 0xff;
|
|
image[11] = (num_chksums >> 24) & 0xff;
|
|
|
|
i = fwrite(image, 1, total_length, f);
|
|
if(i < total_length) {
|
|
perror(outfile);
|
|
fclose(f);
|
|
return -7;
|
|
}
|
|
|
|
printf("Wrote 0x%x bytes in %s\n", total_length, outfile);
|
|
|
|
fclose(f);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* iAudio firmware update file header size */
|
|
#define HEADER_SIZE 0x1030
|
|
/* Address of flash contents that get overwritten by a firmware update.
|
|
* Contents before this address contain the preloader and are not affected
|
|
* by a firmware update.
|
|
* -> Firmware update file contents starting at offset HEADER_SIZE end up
|
|
* in flash at address FLASH_START
|
|
*/
|
|
#define FLASH_START 0x00010000
|
|
/* Start of unused space in original firmware (flash address, not file
|
|
* offset!) where we patch in the Rockbox loader */
|
|
#define ROCKBOX_BOOTLOADER 0x00150000
|
|
/* End of unused space in original firmware */
|
|
#define BOOTLOADER_LIMIT 0x00170000
|
|
|
|
/* Patch the Rockbox bootloader into free space in the original firmware
|
|
* (starting at 0x150000). The preloader starts execution of the OF at
|
|
* 0x10000 which normally contains a jsr 0x10010. We also patch this to
|
|
* do a jsr 0x150000 to the Rockbox dual boot loader instead. If it then
|
|
* decides to start the OF instead of Rockbox, it simply does a jmp
|
|
* 0x10010 instead of loading Rockbox from disk.
|
|
*/
|
|
int mkboot_iaudio(const char* infile, const char* bootfile, const char* outfile, int model_nr)
|
|
{
|
|
size_t flength, blength;
|
|
unsigned char *bbuf, *fbuf, *p;
|
|
const unsigned char fsig[] = {
|
|
0x4e, 0xb9, 0x00, 0x01, 0x00, 0x10 }; /* jsr 0x10010 */
|
|
unsigned char bsig[2][8] = {
|
|
/* dualboot signatures */
|
|
{ 0x60, 0x06, 0x44, 0x42, 0x69, 0x61, 0x78, 0x35 }, /* X5 */
|
|
{ 0x60, 0x06, 0x44, 0x42, 0x69, 0x61, 0x6d, 0x35 }, /* M5 */ };
|
|
FILE *ffile, *bfile, *ofile;
|
|
unsigned char sum = 0;
|
|
int i;
|
|
|
|
/* read input files */
|
|
if ((bfile = fopen(bootfile, "rb")) == NULL) {
|
|
perror("Cannot open Rockbox bootloader file.\n");
|
|
return 1;
|
|
}
|
|
|
|
fseek(bfile, 0, SEEK_END);
|
|
blength = ftell(bfile);
|
|
fseek(bfile, 0, SEEK_SET);
|
|
|
|
if (blength + ROCKBOX_BOOTLOADER >= BOOTLOADER_LIMIT) {
|
|
fprintf(stderr, "Rockbox bootloader is too big.\n");
|
|
return 1;
|
|
}
|
|
|
|
if ((ffile = fopen(infile, "rb")) == NULL) {
|
|
perror("Cannot open original firmware file.");
|
|
return 1;
|
|
}
|
|
|
|
fseek(ffile, 0, SEEK_END);
|
|
flength = ftell(ffile);
|
|
fseek(ffile, 0, SEEK_SET);
|
|
|
|
bbuf = malloc(blength);
|
|
fbuf = malloc(flength);
|
|
|
|
if (!bbuf || !fbuf) {
|
|
fprintf(stderr, "Out of memory.\n");
|
|
return 1;
|
|
}
|
|
|
|
if ( fread(bbuf, 1, blength, bfile) < blength
|
|
|| fread(fbuf, 1, flength, ffile) < flength) {
|
|
fprintf(stderr, "Read error.\n");
|
|
return 1;
|
|
}
|
|
fclose(bfile);
|
|
fclose(ffile);
|
|
|
|
/* verify format of input files */
|
|
if (blength < 0x10 || memcmp(bbuf, bsig[model_nr], sizeof(bsig[0]))) {
|
|
fprintf(stderr, "Rockbox bootloader format error (is it bootloader.bin?).\n");
|
|
return 1;
|
|
}
|
|
if (flength < HEADER_SIZE-FLASH_START+BOOTLOADER_LIMIT
|
|
|| memcmp(fbuf+HEADER_SIZE, fsig, sizeof(fsig))) {
|
|
fprintf(stderr, "Original firmware format error.\n");
|
|
return 1;
|
|
}
|
|
|
|
/* verify firmware is not overrun */
|
|
for (i = ROCKBOX_BOOTLOADER; i < BOOTLOADER_LIMIT; i++) {
|
|
if (fbuf[HEADER_SIZE-FLASH_START+i] != 0xff) {
|
|
fprintf(stderr, "Original firmware has grown too much.\n");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* change jsr 0x10010 to jsr DUAL_BOOTLOADER */
|
|
p = fbuf + HEADER_SIZE + 2;
|
|
*p++ = (ROCKBOX_BOOTLOADER >> 24) & 0xff;
|
|
*p++ = (ROCKBOX_BOOTLOADER >> 16) & 0xff;
|
|
*p++ = (ROCKBOX_BOOTLOADER >> 8) & 0xff;
|
|
*p++ = (ROCKBOX_BOOTLOADER ) & 0xff;
|
|
|
|
p = fbuf + HEADER_SIZE + ROCKBOX_BOOTLOADER - FLASH_START;
|
|
memcpy(p, bbuf, blength);
|
|
|
|
/* recalc checksum */
|
|
for (i = HEADER_SIZE; (size_t)i < flength; i++)
|
|
sum += fbuf[i];
|
|
fbuf[0x102b] = sum;
|
|
|
|
/* write output */
|
|
if ((ofile = fopen(outfile, "wb")) == NULL) {
|
|
perror("Cannot open output file");
|
|
return 1;
|
|
}
|
|
if (fwrite(fbuf, 1, flength, ofile) < flength) {
|
|
fprintf(stderr, "Write error.\n");
|
|
return 1;
|
|
}
|
|
fclose(ofile);
|
|
free(bbuf);
|
|
free(fbuf);
|
|
|
|
return 0;
|
|
}
|