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scramble: add RKW firmware file format encoder 

Change-Id: I8057d6186724c3e8a319a262f45c12da7afb722e
This commit is contained in:
Marcin Bukat 2012-02-28 23:36:13 +01:00
parent 1c565c9c3b
commit f35e300304
5 changed files with 222 additions and 9 deletions
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5
tools/Makefile
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@ -18,10 +18,10 @@ all: scramble descramble sh2d rdf2binary mkboot mkzenboot convbdf codepages \
uclpack rbspeexenc voicefont mk500boot
scramble: scramble.o iriver.o mi4.o gigabeat.o gigabeats.o telechips.o \
iaudio_bl_flash.o creative.o hmac-sha1.o
iaudio_bl_flash.o creative.o hmac-sha1.o rkw.o
descramble: descramble.o iriver.o gigabeat.o
scramble.o: scramble.c iriver.h mi4.h gigabeat.h telechips.h iaudio_bl_flash.h \
creative.h
creative.h rkw.h
descramble.o: descramble.c iriver.h gigabeat.h
creative.o: creative.c creative.h
@ -31,6 +31,7 @@ gigabeat.o: gigabeat.c gigabeat.h
gigabeats.o: gigabeats.c gigabeats.h
mi4.o: mi4.c mi4.h
telechips.o: telechips.c telechips.h
rkw.o: rkw.c rkw.h
iaudio_bl_flash.o: iaudio_bl_flash.c iaudio_bl_flash.h
iaudio_bl_flash.c iaudio_bl_flash.h: iaudio_bl_flash.bmp bmp2rb
$(SILENT)./bmp2rb -f 7 -h . $< >iaudio_bl_flash.c

166
tools/rkw.c Normal file
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@ -0,0 +1,166 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2012 Marcin Bukat
*
* 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 <stdint.h>
#define RKLD_MAGIC 0x4c44524b
#define RKW_HEADER_SIZE 0x2c
/* slightly modified version from crc32.c in rockbox */
static uint32_t rkw_crc32(const void *src, uint32_t len)
{
const unsigned char *buf = (const unsigned char *)src;
/* polynomial 0x04c10db7 */
static const uint32_t crc32_lookup[16] =
{ /* lookup table for 4 bits at a time is affordable */
0x00000000, 0x04C10DB7, 0x09821B6E, 0x0D4316D9,
0x130436DC, 0x17C53B6B, 0x1A862DB2, 0x1E472005,
0x26086DB8, 0x22C9600F, 0x2F8A76D6, 0x2B4B7B61,
0x350C5B64, 0x31CD56D3, 0x3C8E400A, 0x384F4DBD
};
uint32_t crc32 = 0;
unsigned char byte;
uint32_t t;
while (len--)
{
byte = *buf++; /* get one byte of data */
/* upper nibble of our data */
t = crc32 >> 28; /* extract the 4 most significant bits */
t ^= byte >> 4; /* XOR in 4 bits of data into the extracted bits */
crc32 <<= 4; /* shift the CRC register left 4 bits */
crc32 ^= crc32_lookup[t]; /* do the table lookup and XOR the result */
/* lower nibble of our data */
t = crc32 >> 28; /* extract the 4 most significant bits */
t ^= byte & 0x0F; /* XOR in 4 bits of data into the extracted bits */
crc32 <<= 4; /* shift the CRC register left 4 bits */
crc32 ^= crc32_lookup[t]; /* do the table lookup and XOR the result */
}
return crc32;
}
static void int2le(unsigned int val, unsigned char* addr)
{
addr[0] = val & 0xFF;
addr[1] = (val >> 8) & 0xff;
addr[2] = (val >> 16) & 0xff;
addr[3] = (val >> 24) & 0xff;
}
int rkw_encode(char *iname, char *oname, unsigned long modelnum)
{
size_t len;
int length;
int rkwlength;
FILE *file;
uint32_t binary_crc, header_crc;
unsigned char *outbuf;
file = fopen(iname, "rb");
if (!file)
{
perror(iname);
return -1;
}
fseek(file,0,SEEK_END);
length = ftell(file);
fseek(file,0,SEEK_SET);
/* length of the RKW header + binary length + 4 bytes of CRC */
rkwlength = (length + RKW_HEADER_SIZE + 4);
outbuf = malloc(rkwlength);
if (!outbuf)
{
printf("out of memory!\n");
fclose(file);
return -1;
}
/* Clear the buffer to zero */
memset(outbuf, 0, rkwlength);
/* Build the RKW header */
int2le(RKLD_MAGIC, outbuf); /* magic */
int2le(RKW_HEADER_SIZE, outbuf+0x04); /* header size */
int2le(0x60000000, outbuf+0x08); /* base address */
int2le(0x60000000, outbuf+0x0c); /* load address */
int2le(0x60000000+length, outbuf+0x10); /* end address */
int2le(0x6035a5e4, outbuf+0x14); /* points to some unknown struct */
int2le(modelnum, outbuf+0x18); /* reserved (we abuse the format
* to store modelnum here
*/
int2le(0, outbuf+0x1c); /* reserved */
int2le(0x60000000, outbuf+0x20); /* entry point */
int2le(0xe0000000, outbuf+0x24); /* flags */
header_crc = rkw_crc32(outbuf, RKW_HEADER_SIZE - 4);
int2le(header_crc, outbuf+0x28); /* header CRC */
/* Copy the binary */
len = fread(outbuf + RKW_HEADER_SIZE, 1, length, file);
if(len < (size_t)length)
{
perror(iname);
free(outbuf);
fclose(file);
return -2;
}
fclose(file);
/* calc binary CRC and put at the end */
binary_crc = rkw_crc32 (outbuf + RKW_HEADER_SIZE, length);
int2le(binary_crc, outbuf + rkwlength - 4);
file = fopen(oname, "wb");
if (!file)
{
perror(oname);
free(outbuf);
return -3;
}
len = fwrite(outbuf, 1, rkwlength, file);
if(len < (size_t)length)
{
perror(oname);
fclose(file);
free(outbuf);
return -4;
}
fclose(file);
free(outbuf);
fprintf(stderr, "File encoded successfully\n" );
return 0;
}

26
tools/rkw.h Normal file
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@ -0,0 +1,26 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2012 Marcin Bukat
*
* 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.
*
****************************************************************************/
#ifndef _RKW_H
#define _RKW_H
int rkw_encode(char *iname, char *oname, unsigned long modelnum);
#endif

30
tools/scramble.c
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@ -30,6 +30,7 @@
#include "telechips.h"
#include "creative.h"
#include "iaudio_bl_flash.h"
#include "rkw.h"
static int iaudio_encode(char *iname, char *oname, char *idstring);
static int ipod_encode(char *iname, char *oname, int fw_ver, bool fake_rsrc);
@ -119,11 +120,12 @@ void usage(void)
"\t -type=XXXX where XXXX is a string indicating the \n"
"\t type of binary, eg. RBOS, RBBL\n"
"\t-tcc=X Telechips generic firmware format (X values: sum, crc)\n"
"\t-rkw Rockchip RKW format\n"
"\t-add=X Rockbox generic \"add-up\" checksum format\n"
"\t (X values: h100, h120, h140, h300, ipco, nano, ipvd, mn2g\n"
"\t ip3g, ip4g, mini, iax5, iam5, iam3, h10, h10_5gb,\n"
"\t tpj2, c200, e200, giga, gigs, m100, m500, d2,\n");
printf("\t 9200, 1630, 6330, ldax, m200, c100, clip, e2v2,\n"
"\t ip3g, ip4g, mini, iax5, iam5, iam3, h10, h10_5gb,\n");
printf("\t tpj2, c200, e200, giga, gigs, m100, m500, d2,\n"
"\t 9200, 1630, 6330, ldax, m200, c100, clip, e2v2,\n"
"\t m2v4, fuze, c2v2, clv2, y820, y920, y925, x747,\n"
"\t 747p, x777, nn2g, m244, cli+, fuz2, hd20, hd30,\n"
"\t ip6g, rk27, clzp)\n");
@ -148,7 +150,7 @@ int main (int argc, char** argv)
unsigned long modelnum;
char modelname[5];
int model_id;
enum { none, scramble, xor, tcc_sum, tcc_crc, add } method = scramble;
enum { none, scramble, xor, tcc_sum, tcc_crc, rkw, add } method = scramble;
bool creative_enable_ciff;
model_id = ARCHOS_PLAYER;
@ -222,6 +224,24 @@ int main (int argc, char** argv)
return 2;
}
}
else if(!strncmp(argv[1], "-rkw", 4)) {
iname = argv[3];
oname = argv[4];
modelnum = 0;
if(!strncmp(argv[2], "-modelnum=", 10)) {
modelnum = atoi(&argv[2][10]);
}
if (!modelnum)
{
modelnum = 73; /* rk27generic */
fprintf(stderr, "modelnum not supplied."
" using default value for rk27generic target\n");
}
return (rkw_encode(iname, oname, modelnum) != 0) ? -1 : 0;
}
else if(!strncmp(argv[1], "-add=", 5)) {
iname = argv[2];
oname = argv[3];
@ -337,8 +357,6 @@ int main (int argc, char** argv)
modelnum = 71;
else if (!strcmp(&argv[1][5], "fuz+")) /* Sansa Fuze+ */
modelnum = 72;
else if (!strcmp(&argv[1][5], "rk27")) /* rockchip 27xx generic */
modelnum = 73;
else if (!strcmp(&argv[1][5], "clzp")) /* Sansa Clip Zip */
modelnum = 79;
else if (!strcmp(&argv[1][5], "conn")) /* Sansa Connect */

4
tools/tools.make
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@ -13,7 +13,9 @@ $(TOOLSDIR)/scramble: $(TOOLSDIR)/scramble.c $(TOOLSDIR)/iriver.c \
$(TOOLSDIR)/mi4.c $(TOOLSDIR)/gigabeat.c \
$(TOOLSDIR)/gigabeats.c $(TOOLSDIR)/telechips.c \
$(TOOLSDIR)/iaudio_bl_flash.c \
$(TOOLSDIR)/creative.c $(TOOLSDIR)/hmac-sha1.c
$(TOOLSDIR)/creative.c $(TOOLSDIR)/hmac-sha1.c \
$(TOOLSDIR)/rkw.c
$(TOOLSDIR)/rdf2binary: $(TOOLSDIR)/rdf2binary.c
$(TOOLSDIR)/convbdf: $(TOOLSDIR)/convbdf.c
$(TOOLSDIR)/codepages: $(TOOLSDIR)/codepages.c $(TOOLSDIR)/codepage_tables.c