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#!/bin/sh
#
# Copyright (C) 2011 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
usage() {
echo "Usage: $0 <OM2P|OM5P|OM5PAC|MR600|MR900|MR1750|A60|A42> <out file path> <kernel path> <rootfs path>"
rm -f $CFG_OUT
exit 1
}
[ "$#" -lt 4 ] && usage
CE_TYPE=$1
CFG_OUT=$2
KERNEL_PATH=$3
ROOTFS_PATH=$4
case $CE_TYPE in
OM2P)
MAX_PART_SIZE=7168
KERNEL_FLASH_ADDR=0x1c0000
FLASH_BS=262144
MD5_SKIP_BLOCKS=1
SIZE_FACTOR=1
SIZE_FORMAT="%d"
;;
OM5P|OM5PAC|MR600|MR900|MR1750|A60)
MAX_PART_SIZE=7808
KERNEL_FLASH_ADDR=0xb0000
FLASH_BS=65536
MD5_SKIP_BLOCKS=4
SIZE_FACTOR=1
SIZE_FORMAT="%d"
;;
A42)
MAX_PART_SIZE=15616
KERNEL_FLASH_ADDR=0x180000
FLASH_BS=65536
MD5_SKIP_BLOCKS=4
SIZE_FACTOR=1024
SIZE_FORMAT="0x%08x"
;;
*)
echo "Error - unsupported ce type: $CE_TYPE"
exit 1
;;
esac
CHECK_BS=65536
KERNEL_SIZE=$(stat -c%s "$KERNEL_PATH")
KERNEL_MD5=$(mkhash md5 $KERNEL_PATH)
KERNEL_SHA256=$(mkhash sha256 $KERNEL_PATH)
KERNEL_PART_SIZE_KB=$(size=$(($KERNEL_SIZE / $FLASH_BS)); [ $(($size * $FLASH_BS)) -lt $KERNEL_SIZE ] && size=$(($size + 1)); echo $(($size * $FLASH_BS / 1024)))
KERNEL_PART_SIZE=$(printf $SIZE_FORMAT $(($KERNEL_PART_SIZE_KB * $SIZE_FACTOR)))
ROOTFS_FLASH_ADDR=$(addr=$(($KERNEL_FLASH_ADDR + ($KERNEL_PART_SIZE_KB * 1024))); printf "0x%x" $addr)
ROOTFS_SIZE=$(stat -c%s "$ROOTFS_PATH")
ROOTFS_CHECK_BLOCKS=$((($ROOTFS_SIZE / $CHECK_BS) - $MD5_SKIP_BLOCKS))
ROOTFS_MD5=$(dd if=$ROOTFS_PATH bs=$CHECK_BS count=$ROOTFS_CHECK_BLOCKS 2>&- | mkhash md5)
ROOTFS_MD5_FULL=$(mkhash md5 $ROOTFS_PATH)
ROOTFS_SHA256_FULL=$(mkhash sha256 $ROOTFS_PATH)
ROOTFS_CHECK_SIZE=$(printf '0x%x' $(($ROOTFS_CHECK_BLOCKS * $CHECK_BS)))
ROOTFS_PART_SIZE_KB=$(($MAX_PART_SIZE - $KERNEL_PART_SIZE_KB))
ROOTFS_PART_SIZE=$(printf $SIZE_FORMAT $(($ROOTFS_PART_SIZE_KB * $SIZE_FACTOR)))
cat << EOF > $CFG_OUT
[vmlinux]
filename=kernel
md5sum=$KERNEL_MD5
filemd5sum=$KERNEL_MD5
filesha256sum=$KERNEL_SHA256
flashaddr=$KERNEL_FLASH_ADDR
checksize=0x0
cmd_success=setenv bootseq 1,2; setenv kernel_size_1 $KERNEL_PART_SIZE; saveenv
cmd_fail=reset
[rootfs]
filename=rootfs
md5sum=$ROOTFS_MD5
filemd5sum=$ROOTFS_MD5_FULL
filesha256sum=$ROOTFS_SHA256_FULL
flashaddr=$ROOTFS_FLASH_ADDR
checksize=$ROOTFS_CHECK_SIZE
cmd_success=setenv bootseq 1,2; setenv kernel_size_1 $KERNEL_PART_SIZE; setenv rootfs_size_1 $ROOTFS_PART_SIZE; saveenv
cmd_fail=reset
EOF
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