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#!/bin/bash
######################################################################
# __________ __ ___.
# Open \______ \ ____ ____ | | _\_ |__ _______ ___
# Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
# Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
# Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
# \/ \/ \/ \/ \/
#
# * Script to unpack a Samsung YP-R0 firmware file (R0.ROM) */
######################################################################
# The file was originally called MuonDecrypt.sh
#
# I'm not sure about the original author of this file, as it wasn't included in Samsung package.
# But I guess it was done by JeanLouis, an Italian user of the Hardware Upgrade Forum. If needed, we should search throug old posts for that...
#
# bail out early
set -e
# some sanity checks
if [ $# -lt 1 ] || [ $# -gt 2 ]; then
echo "Usage $0 <rom file> [out dir]"
exit 1
fi
ROM=$1
DIR=${2:-"."}
DIR=${DIR%/}
MBOOT="$DIR/MBoot.bin"
MBOOT_TMP="${TMP_DIR:-$DIR}/MBoot.tmp"
LINUX="$DIR/zImage"
CRAMFS="$DIR/cramfs-fsl.rom"
SYSDATA="$DIR/SYSDATA.bin"
MD5SUMS="$DIR/MD5SUMS"
TMP="${TMP_DIR:-$DIR}/_$$.tmp"
if [ ! -f ./extract_section ]; then
echo "Couldn't find extract_section binary (try 'make')"
exit 1
fi
if [ ! -f ./MuonEncrypt ]; then
echo "Couldn't find MuonEncrypt binary (try 'make')"
exit 1
fi
mkdir -p $DIR
if [ ! -w $DIR ]; then
echo "Target dir not writable"
exit 1
fi
ExtractAndDecrypt() {
START=$(expr $START - $2)
echo "Extracting $1..."
./extract_section $ROM $TMP $START $2
echo "Decrypt $1..."
./MuonEncrypt $TMP > $1
}
size=( `head -n 9 $ROM | tail -n 4 | while read LINE; do echo $LINE | cut -d\( -f 2 | cut -d\) -f 1; done`)
checksum=( `head -n 9 $ROM | tail -n 4 | while read LINE; do echo $LINE | cut -d\( -f 3 | cut -d\) -f 1; done`)
echo "${checksum[0]} $MBOOT" > $MD5SUMS
echo "${checksum[1]} $LINUX" >> $MD5SUMS
echo "${checksum[2]} $CRAMFS" >> $MD5SUMS
echo "${checksum[3]} $SYSDATA" >> $MD5SUMS
START=`stat -c%s $ROM`
ExtractAndDecrypt $SYSDATA ${size[3]}
ExtractAndDecrypt $CRAMFS ${size[2]}
ExtractAndDecrypt $LINUX ${size[1]}
ExtractAndDecrypt $MBOOT_TMP ${size[0]}
rm $TMP
echo "Create $MBOOT..."
dd if=$MBOOT_TMP of=$MBOOT bs=96 count=1 2>/dev/null
dd if=$MBOOT_TMP of=$MBOOT bs=1088 skip=1 seek=1 2>/dev/null
rm $MBOOT_TMP
echo "Check integrity:"
md5sum -c $MD5SUMS
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