3 # Copyright (C) 2012 OpenWrt.org
12 dd bs=1 count=2 skip=$pos if=$mtddev 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"'
15 dir825b_is_caldata_valid() {
19 magic=$(get_magic_at $mtddev 4096)
20 [ "$magic" != "a55a" ] && return 0
22 magic=$(get_magic_at $mtddev 20480)
23 [ "$magic" != "a55a" ] && return 0
28 dir825b_copy_caldata() {
36 mtd_src=$(find_mtd_part $cal_src)
37 [ -z "$mtd_src" ] && {
38 echo "no $cal_src partition found"
42 mtd_dst=$(find_mtd_part $cal_dst)
43 [ -z "$mtd_dst" ] && {
44 echo "no $cal_dst partition found"
48 dir825b_is_caldata_valid "$mtd_src" && {
49 echo "no valid calibration data found in $cal_src"
53 dir825b_is_caldata_valid "$mtd_dst" && {
54 echo "Copying calibration data from $cal_src to $cal_dst..."
55 dd if="$mtd_src" 2>/dev/null | mtd -q -q write - "$cal_dst"
58 md5_src=$(md5sum "$mtd_src") && md5_src="${md5_src%% *}"
59 md5_dst=$(md5sum "$mtd_dst") && md5_dst="${md5_dst%% *}"
61 [ "$md5_src" != "$md5_dst" ] && {
62 echo "calibration data mismatch $cal_src:$md5_src $cal_dst:$md5_dst"
69 dir825b_do_upgrade_combined() {
72 local fw_mtd=$(find_mtd_part $fw_part)
73 local fw_length=0x$(dd if="$fw_file" bs=2 skip=1 count=4 2>/dev/null)
74 local fw_blocks=$(($fw_length / 65536))
76 if [ -n "$fw_mtd" ] && [ ${fw_blocks:-0} -gt 0 ]; then
78 [ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR"
81 dd if="$fw_file" bs=64k skip=1 count=$fw_blocks 2>/dev/null | \
82 mtd $append write - "$fw_part"
86 dir825b_check_image() {
87 local magic="$(get_magic_long "$1")"
88 local fw_mtd=$(find_mtd_part "firmware_orig")
94 local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null)
95 local md5_chk=$(dd if="$1" bs=64k skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}"
96 local fw_len=$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null)
97 local fw_part_len=$(mtd_get_part_size "firmware")
99 if [ -z "$fw_mtd" ]; then
100 ask_bool 0 "Do you have a backup of the caldata partition?" || {
101 echo "Warning, please make sure that you have a backup of the caldata partition."
102 echo "Once you have that, use 'sysupgrade -i' for upgrading to the 'fat' firmware."
107 if [ -z "$md5_img" -o -z "$md5_chk" ]; then
108 echo "Unable to get image checksums. Maybe you are using a streamed image?"
112 if [ "$md5_img" != "$md5_chk" ]; then
113 echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)"
117 fw_len=$((0x$fw_len))
118 fw_part_len=${fw_part_len:-0}
120 if [ $fw_part_len -lt $fw_len ]; then
121 echo "The upgrade image is too big (size:$fw_len available:$fw_part_len)"
126 echo "Unsupported image format."
134 platform_do_upgrade_dir825b() {
135 local magic="$(get_magic_long "$1")"
136 local fw_mtd=$(find_mtd_part "firmware_orig")
140 if [ -n "$fw_mtd" ]; then
141 # restore calibration data before downgrading to
143 dir825b_copy_caldata "caldata" "caldata_orig" || {
144 echo "unable to restore calibration data"
147 PART_NAME="firmware_orig"
151 default_do_upgrade "$ARGV"
154 if [ -z "$fw_mtd" ]; then
155 # backup calibration data before upgrading to the
157 dir825b_copy_caldata "caldata" "caldata_copy" || {
158 echo "unable to backup calibration data"
162 dir825b_do_upgrade_combined "firmware" "$ARGV"