27c9d80f51
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113 lines
3.3 KiB
Bash
113 lines
3.3 KiB
Bash
# The mtd partitions "firmware" and "Kernel2" on NAND flash are os-image
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# partitions. These partitions are called as "Image1/Image2" in U-Boot
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# on WSR-2533DHPLx devices, and they are checked conditions when booting.
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# "Image1" is always used for booting.
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#
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# == U-Boot Behaviors ==
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#
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# - "Image1"/"Image2" images are good, images are different or
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# "Image2" image is broken
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# -> copy os-image to "Image2" from "Image1"
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#
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# - "Image1" image is broken
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# -> copy os-image to "Image1" from "Image2"
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#
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# - "Image1"/"Image2" images are broken
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# -> fall to U-Boot command line
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# TRX magic numbers of each model
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case "$(board_name)" in
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buffalo,wsr-2533dhpl2)
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BUFFALO_TRX_MAGIC="50484c32" # "PHL2"
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;;
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buffalo,wsr-2533dhpls)
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BUFFALO_TRX_MAGIC="44484c53" # "DHLS"
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;;
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esac
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buffalo_check_image() {
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local board="$1"
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local boardname="$(echo $board | tr ',' '_')"
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local magic="$2"
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local fw_image="$3"
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# return error state if TRX + UBI formatted image specified
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# to notify about configurations
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if [ "$magic" = "$BUFFALO_TRX_MAGIC" ]; then
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echo "Your configurations won't be saved if factory-uboot.bin image specified."
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echo "But if you want to upgrade, please execute sysupgrade with \"-F\" option."
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return 1
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fi
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# check if valid tar file specifed
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if ! tar tf "$fw_image" &>/dev/null; then
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echo "Specified file is not a tar archive: $fw_image"
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return 1
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fi
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local control_len=$( (tar xf $fw_image sysupgrade-$boardname/CONTROL -O | wc -c) 2> /dev/null)
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# check if valid sysupgrade tar archive
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if [ "$control_len" = "0" ]; then
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echo "Invalid sysupgrade file: $fw_image"
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return 1
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fi
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local kern_part_len=$(grep "\"linux\"" /proc/mtd | sed "s/mtd[0-9]*:[ \t]*\([^ \t]*\).*/\1/")
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[ -z "$kern_part_len" ] && {
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echo "Unable to get \"linux\" partition size"
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return 1
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}
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kern_part_len=$((0x$kern_part_len))
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# this also checks if the sysupgrade image is for correct models
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local kern_bin_len=$( (tar xf $fw_image sysupgrade-${boardname}/kernel -O | wc -c) 2> /dev/null)
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if [ -z "$kern_bin_len" ]; then
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echo "Failed to get new kernel size, is valid sysupgrade image specified for the device?"
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return 1
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fi
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# kernel binary has a trx header (len: 28 (0x1c))
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kern_bin_len=$((kern_bin_len - 28))
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if [ "$kern_bin_len" != "$kern_part_len" ]; then
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echo -n "The length of new kernel is invalid for current "
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echo "\"linux\" partition, please use factory-uboot.bin image."
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echo "\"linux\" partition: $kern_part_len, new kernel: $kern_bin_len"
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return 1
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fi
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}
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# for TRX + UBI formatted image
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buffalo_upgrade_ubinized() {
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sync
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echo 3 > /proc/sys/vm/drop_caches
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local mtdnum="$( find_mtd_index "ubi" )"
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# if no "ubi", don't return error for the purpose of recovery
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# ex: recovery after accidental erasing "firmware" partition
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if [ ! "$mtdnum" ]; then
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echo "cannot find ubi mtd partition \"ubi\", skip detachment"
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else
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ubidetach -m "$mtdnum"
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fi
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# erase all data in "firmware"
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mtd erase "${PART_NAME}"
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# write TRX + UBI formatted image to "firmware"
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get_image "$1" | mtd $MTD_ARGS write - "${PART_NAME:-firmware}"
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if [ $? -ne 0 ]; then
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echo "Failed to write the specified image."
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exit 1
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fi
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}
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buffalo_do_upgrade() {
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if [ "$(get_magic_long "$1")" = "$BUFFALO_TRX_MAGIC" ]; then
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buffalo_upgrade_ubinized "$1"
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else
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CI_KERNPART="firmware"
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nand_do_upgrade "$1"
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fi
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}
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