# The mtd partitions "firmware" and "Kernel2" on NAND flash are os-image # partitions. These partitions are called as "Image1/Image2" in U-Boot # on WSR-2533DHPLx devices, and they are checked conditions when booting. # "Image1" is always used for booting. # # == U-Boot Behaviors == # # - "Image1"/"Image2" images are good, images are different or # "Image2" image is broken # -> copy os-image to "Image2" from "Image1" # # - "Image1" image is broken # -> copy os-image to "Image1" from "Image2" # # - "Image1"/"Image2" images are broken # -> fall to U-Boot command line # TRX magic numbers of each model case "$(board_name)" in buffalo,wsr-2533dhpl2) BUFFALO_TRX_MAGIC="50484c32" # "PHL2" ;; buffalo,wsr-2533dhpls) BUFFALO_TRX_MAGIC="44484c53" # "DHLS" ;; esac buffalo_check_image() { local board="$1" local boardname="$(echo $board | tr ',' '_')" local magic="$2" local fw_image="$3" # return error state if TRX + UBI formatted image specified # to notify about configurations if [ "$magic" = "$BUFFALO_TRX_MAGIC" ]; then echo "Your configurations won't be saved if factory-uboot.bin image specified." echo "But if you want to upgrade, please execute sysupgrade with \"-F\" option." return 1 fi # check if valid tar file specifed if ! tar tf "$fw_image" &>/dev/null; then echo "Specified file is not a tar archive: $fw_image" return 1 fi local control_len=$( (tar xf $fw_image sysupgrade-$boardname/CONTROL -O | wc -c) 2> /dev/null) # check if valid sysupgrade tar archive if [ "$control_len" = "0" ]; then echo "Invalid sysupgrade file: $fw_image" return 1 fi local kern_part_len=$(grep "\"linux\"" /proc/mtd | sed "s/mtd[0-9]*:[ \t]*\([^ \t]*\).*/\1/") [ -z "$kern_part_len" ] && { echo "Unable to get \"linux\" partition size" return 1 } kern_part_len=$((0x$kern_part_len)) # this also checks if the sysupgrade image is for correct models local kern_bin_len=$( (tar xf $fw_image sysupgrade-${boardname}/kernel -O | wc -c) 2> /dev/null) if [ -z "$kern_bin_len" ]; then echo "Failed to get new kernel size, is valid sysupgrade image specified for the device?" return 1 fi # kernel binary has a trx header (len: 28 (0x1c)) kern_bin_len=$((kern_bin_len - 28)) if [ "$kern_bin_len" != "$kern_part_len" ]; then echo -n "The length of new kernel is invalid for current " echo "\"linux\" partition, please use factory-uboot.bin image." echo "\"linux\" partition: $kern_part_len, new kernel: $kern_bin_len" return 1 fi } # for TRX + UBI formatted image buffalo_upgrade_ubinized() { sync echo 3 > /proc/sys/vm/drop_caches local mtdnum="$( find_mtd_index "ubi" )" # if no "ubi", don't return error for the purpose of recovery # ex: recovery after accidental erasing "firmware" partition if [ ! "$mtdnum" ]; then echo "cannot find ubi mtd partition \"ubi\", skip detachment" else ubidetach -m "$mtdnum" fi # erase all data in "firmware" mtd erase "${PART_NAME}" # write TRX + UBI formatted image to "firmware" get_image "$1" | mtd $MTD_ARGS write - "${PART_NAME:-firmware}" if [ $? -ne 0 ]; then echo "Failed to write the specified image." exit 1 fi } buffalo_do_upgrade() { if [ "$(get_magic_long "$1")" = "$BUFFALO_TRX_MAGIC" ]; then buffalo_upgrade_ubinized "$1" else CI_KERNPART="firmware" nand_do_upgrade "$1" fi }