With these images, it is possible to use the 'unused' partition of the flash. The 'fat' images can be installed with the sysupgrade command. When a 'fat' image is installed from a regular one, the platform specific sysupgrade script copies the calibration data to the end of the flash. Likewise, when a regular image is installed from the 'fat' version the sysupgrade script copies the calibration data back to the original location. SVN-Revision: 33540master
Gabor Juhos
12 years ago
parent
e7b1949d87
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#!/bin/sh |
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# |
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# Copyright (C) 2012 OpenWrt.org |
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# |
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. /lib/functions.sh |
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. /lib/ar71xx.sh |
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get_mtd_part_size() { |
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local part_name=$1 |
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local first dev size erasesize name |
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while read dev size erasesize name; do |
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name=${name#'"'}; name=${name%'"'} |
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if [ "$name" = "$part_name" ]; then |
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echo $((0x$size)) |
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break |
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fi |
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done < /proc/mtd |
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} |
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get_magic_at() { |
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local mtddev=$1 |
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local pos=$2 |
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dd bs=1 count=2 skip=$pos if=$mtddev 2>/dev/null | hexdump -v -n 4 -e '1/1 "%02x"' |
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} |
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dir825b_is_caldata_valid() { |
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local mtddev=$1 |
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local magic |
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magic=$(get_magic_at $mtddev 4096) |
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[ "$magic" != "a55a" ] && return 0 |
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magic=$(get_magic_at $mtddev 20480) |
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[ "$magic" != "a55a" ] && return 0 |
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return 1 |
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} |
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dir825b_copy_caldata() { |
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local cal_src=$1 |
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local cal_dst=$2 |
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local mtd_src |
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local mtd_dst |
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local md5_src |
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local md5_dst |
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mtd_src=$(find_mtd_part $cal_src) |
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[ -z "$mtd_src" ] && { |
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echo "no $cal_src partition found" |
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return 1 |
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} |
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mtd_dst=$(find_mtd_part $cal_dst) |
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[ -z "$mtd_dst" ] && { |
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echo "no $cal_dst partition found" |
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return 1 |
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} |
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dir825b_is_caldata_valid "$mtd_src" && { |
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echo "no valid calibration data found in $cal_src" |
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return 1 |
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} |
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dir825b_is_caldata_valid "$mtd_dst" && { |
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echo "Copying calibration data from $cal_src to $cal_dst..." |
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dd if="$mtd_src" 2>/dev/null | mtd -q -q write - "$cal_dst" |
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} |
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md5_src=$(md5sum "$mtd_src") && md5_src="${md5_src%% *}" |
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md5_dst=$(md5sum "$mtd_dst") && md5_dst="${md5_dst%% *}" |
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[ "$md5_src" != "$md5_dst" ] && { |
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echo "calibration data mismatch $cal_src:$md5_src $cal_dst:$md5_dst" |
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return 1 |
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} |
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return 0 |
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} |
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dir825b_do_upgrade_combined() { |
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local fw_part=$1 |
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local fw_file=$2 |
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local fw_mtd=$(find_mtd_part $fw_part) |
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local fw_length=0x$(dd if="$fw_file" bs=2 skip=1 count=4 2>/dev/null) |
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local fw_blocks=$(($fw_length / 65536)) |
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if [ -n "$fw_mtd" ] && [ ${fw_blocks:-0} -gt 0 ]; then |
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local append="" |
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[ -f "$CONF_TAR" -a "$SAVE_CONFIG" -eq 1 ] && append="-j $CONF_TAR" |
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sync |
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dd if="$fw_file" bs=64k skip=1 count=$fw_blocks 2>/dev/null | \ |
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mtd $append write - "$fw_part" |
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fi |
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} |
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dir825b_check_image() { |
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local magic="$(get_magic_long "$1")" |
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local fw_mtd=$(find_mtd_part "firmware_orig") |
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case "$magic" in |
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"27051956") |
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;; |
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"43493030") |
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local md5_img=$(dd if="$1" bs=2 skip=9 count=16 2>/dev/null) |
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local md5_chk=$(dd if="$1" bs=64k skip=1 2>/dev/null | md5sum -); md5_chk="${md5_chk%% *}" |
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local fw_len=$(dd if="$1" bs=2 skip=1 count=4 2>/dev/null) |
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local fw_part_len=$(get_mtd_part_size "firmware") |
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if [ -z "$fw_mtd" ]; then |
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ask_bool 0 "Do you have a backup of the caldata partition?" || { |
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echo "Warning, please make sure that you have a backup of the caldata partition." |
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echo "Once you have that, use 'sysupgrade -i' for upgrading to the 'fat' firmware." |
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return 1 |
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} |
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fi |
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if [ -z "$md5_img" -o -z "$md5_chk" ]; then |
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echo "Unable to get image checksums. Maybe you are using a streamed image?" |
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return 1 |
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fi |
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if [ "$md5_img" != "$md5_chk" ]; then |
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echo "Invalid image. Contents do not match checksum (image:$md5_img calculated:$md5_chk)" |
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return 1 |
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fi |
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fw_len=$((0x$fw_len)) |
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fw_part_len=${fw_part_len:-0} |
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if [ $fw_part_len -lt $fw_len ]; then |
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echo "The upgrade image is too big (size:$fw_len available:$fw_part_len)" |
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return 1 |
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fi |
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;; |
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*) |
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echo "Unsupported image format." |
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return 1 |
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;; |
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esac |
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return 0 |
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} |
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platform_do_upgrade_dir825b() { |
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local magic="$(get_magic_long "$1")" |
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local fw_mtd=$(find_mtd_part "firmware_orig") |
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case "$magic" in |
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"27051956") |
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if [ -n "$fw_mtd" ]; then |
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# restore calibration data before downgrading to |
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# the normal image |
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dir825b_copy_caldata "caldata" "caldata_orig" || { |
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echo "unable to restore calibration data" |
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exit 1 |
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} |
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PART_NAME="firmware_orig" |
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else |
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PART_NAME="firmware" |
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fi |
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default_do_upgrade "$ARGV" |
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;; |
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"43493030") |
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if [ -z "$fw_mtd" ]; then |
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# backup calibration data before upgrading to the |
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# fat image |
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dir825b_copy_caldata "caldata" "caldata_copy" || { |
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echo "unable to backup calibration data" |
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exit 1 |
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} |
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fi |
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dir825b_do_upgrade_combined "firmware" "$ARGV" |
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;; |
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esac |
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} |
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