FORUM BMW.fr

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#!/bin/sh
# $Id: firstboot 5544 2006-11-17 03:07:10Z nbd $
# . /etc/functions.sh


FIRMWARE_LENGTH=`ls -l $1 | awk '{print $5-1024}'`

dd if=$1 of=/tmp/desc.txt bs=1 skip=$FIRMWARE_LENGTH 2> /dev/null


#TODO: Check available memory before doing it
dd if=$1 of=/tmp/firmware.bin.tmp bs=$FIRMWARE_LENGTH count=1 2> /dev/null


#is it dt40 (we check only firmware atm
MODEL=`cat /tmp/desc.txt | awk -F "=" '/MODEL=/ {print $2}'`
if [ "$MODEL" != "DT40" ]; then
   echo -n "Wrong firmware magic. Exiting..."
   exit 1
fi

# verify platform
BOARD=`cat /tmp/desc.txt | awk -F "=" '/BOARD=/ {print $2}'`
BOARD_VERIFY=`cat /etc/banner | awk '/Board: / {print $2}'`
if [ "$BOARD" != "$BOARD_VERIFY" ]; then
   echo -n "Current platform: $BOARD_VERIFY"
   echo -n "Firmware platform: $BOARD"
   echo -n "This firmware id for another platform. Exiting..."
   exit 1
fi


# verify checksum
CHECKSUM=`md5sum /tmp/firmware.bin.tmp | awk '{print $1}'`
CHECKSUM_VERIFY=`head -n 1 /tmp/desc.txt | awk '{print $1}'`
if [ "$CHECKSUM" != "$CHECKSUM_VERIFY" ]; then
   echo -n "Wrong CRC. Exiting..."
   exit 1
else
   rm -f /tmp/firmware.bin.tmp
fi

# everything was ok
exit 0