diff options
Diffstat (limited to 'target/linux/ar71xx/base-files/lib/upgrade/dir825.sh')
| -rw-r--r-- | target/linux/ar71xx/base-files/lib/upgrade/dir825.sh | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/target/linux/ar71xx/base-files/lib/upgrade/dir825.sh b/target/linux/ar71xx/base-files/lib/upgrade/dir825.sh new file mode 100644 index 000000000..e16128a9c --- /dev/null +++ b/target/linux/ar71xx/base-files/lib/upgrade/dir825.sh @@ -0,0 +1,177 @@ +#!/bin/sh +# +# Copyright (C) 2012 OpenWrt.org +# + +. /lib/functions.sh +. /lib/ar71xx.sh + +get_mtd_part_size() { + local part_name=$1 + local first dev size erasesize name + while read dev size erasesize name; do + name=${name#'"'}; name=${name%'"'} + if [ "$name" = "$part_name" ]; then + echo $((0x$size)) + break + fi + done < /proc/mtd +} + +get_magic_at() { + local mtddev=$1 + local pos=$2 + dd bs=1 count=2 skip=$pos if=$mtddev 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"' +} + +dir825b_is_caldata_valid() { + local mtddev=$1 + local magic + + magic=$(get_magic_at $mtddev 4096) + [ "$magic" != "a55a" ] && return 0 + + magic=$(get_magic_at $mtddev 20480) + [ "$magic" != "a55a" ] && return 0 + + return 1 +} + +dir825b_copy_caldata() { + local cal_src=$1 + local cal_dst=$2 + local mtd_src + local mtd_dst + local md5_src + local md5_dst + + mtd_src=$(find_mtd_part $cal_src) + [ -z "$mtd_src" ] && { + echo "no $cal_src partition found" + return 1 + } + + mtd_dst=$(find_mtd_part $cal_dst) + [ -z "$mtd_dst" ] && { + echo "no $cal_dst partition found" + return 1 + } + + dir825b_is_caldata_valid "$mtd_src" && { + echo "no valid calibration data found in $cal_src" + return 1 + } + + dir825b_is_caldata_valid "$mtd_dst" && { + echo "Copying calibration data from $cal_src to $cal_dst..." + dd if="$mtd_src" 2>/dev/null | mtd -q -q write - "$cal_dst" + } + + md5_src=$(md5sum "$mtd_src") && md5_src="${md5_src%% *}" + md5_dst=$(md5sum "$mtd_dst") && md5_dst="${md5_dst%% *}" + + [ "$md5_src" != "$md5_dst" ] && { + echo "calibration data mismatch $cal_src:$md5_src $cal_dst:$md5_dst" + return 1 + } + + return 0 +} + +dir825b_do_upgrade_combined() { + local fw_part=$1 + local fw_file=$2 + local fw_mtd=$(find_mtd_part $fw_part) + local fw_length=0x$(dd if="$fw_file" bs=2 skip=1 count=4 2>/dev/null) + local fw_blocks=$(($fw_length / 65536)) + + if [ -n "$fw_mtd" ] && [ ${fw_blocks:-0} -gt 0 ]; then + local append="" + [ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR" + + sync + dd if="$fw_file" bs=64k skip=1 count=$fw_blocks 2>/dev/null | \ + mtd $append write - "$fw_part" + fi +} + +dir825b_check_image() { + local magic="$(get_magic_long "$1")" + local fw_mtd=$(find_mtd_part "firmware_orig") + + case "$magic" in + "27051956") + ;; + "43493030") + local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null) + local md5_chk=$(dd if="$1" bs=64k skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}" + local fw_len=$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null) + local fw_part_len=$(get_mtd_part_size "firmware") + + if [ -z "$fw_mtd" ]; then + ask_bool 0 "Do you have a backup of the caldata partition?" || { + echo "Warning, please make sure that you have a backup of the caldata partition." + echo "Once you have that, use 'sysupgrade -i' for upgrading to the 'fat' firmware." + return 1 + } + fi + + if [ -z "$md5_img" -o -z "$md5_chk" ]; then + echo "Unable to get image checksums. Maybe you are using a streamed image?" + return 1 + fi + + if [ "$md5_img" != "$md5_chk" ]; then + echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)" + return 1 + fi + + fw_len=$((0x$fw_len)) + fw_part_len=${fw_part_len:-0} + + if [ $fw_part_len -lt $fw_len ]; then + echo "The upgrade image is too big (size:$fw_len available:$fw_part_len)" + return 1 + fi + ;; + *) + echo "Unsupported image format." + return 1 + ;; + esac + + return 0 +} + +platform_do_upgrade_dir825b() { + local magic="$(get_magic_long "$1")" + local fw_mtd=$(find_mtd_part "firmware_orig") + + case "$magic" in + "27051956") + if [ -n "$fw_mtd" ]; then + # restore calibration data before downgrading to + # the normal image + dir825b_copy_caldata "caldata" "caldata_orig" || { + echo "unable to restore calibration data" + exit 1 + } + PART_NAME="firmware_orig" + else + PART_NAME="firmware" + fi + default_do_upgrade "$ARGV" + ;; + "43493030") + if [ -z "$fw_mtd" ]; then + # backup calibration data before upgrading to the + # fat image + dir825b_copy_caldata "caldata" "caldata_copy" || { + echo "unable to backup calibration data" + exit 1 + } + fi + dir825b_do_upgrade_combined "firmware" "$ARGV" + ;; + esac +} |