bcm4908: sysupgrade: refactor handling different firmware formats
This results in setting format specific data (format info, extract
commands) in a single function. It should help maintaining sysupgrade
code.
This change has been tested on Asus GT-AC5300 and Netgear R8000P.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 30b168b9b8)
This commit is contained in:
Rafał Miłecki
@@ -4,6 +4,10 @@ RAMFS_COPY_BIN="bcm4908img expr"
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PART_NAME=firmware
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BCM4908_FW_FORMAT=
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BCM4908_FW_BOARD_ID=
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BCM4908_FW_INT_IMG_FORMAT=
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# $(1): file to read from
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# $(2): offset in bytes
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# $(3): length in bytes
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@@ -34,7 +38,12 @@ platform_identify() {
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magic=$(get_hex_u32_be "$1" 0)
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case "$magic" in
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2a23245e)
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echo "chk"
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local header_len=$((0x$(get_hex_u32_be "$1" 4)))
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local board_id_len=$(($header_len - 40))
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BCM4908_FW_FORMAT="chk"
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BCM4908_FW_BOARD_ID=$(dd if="$1" skip=40 bs=1 count=$board_id_len 2>/dev/null | hexdump -v -e '1/1 "%c"')
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BCM4908_FW_INT_IMG_FORMAT="bcm4908img"
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return
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;;
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esac
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@@ -44,12 +53,22 @@ platform_identify() {
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magic=$(get_content "$1" $((size - 20 - 64 + 8)) 12)
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case "$magic" in
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GT-AC5300)
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echo "asus"
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local size=$(wc -c "$1" | cut -d ' ' -f 1)
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BCM4908_FW_FORMAT="asus"
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BCM4908_FW_BOARD_ID=$(get_content "$1" $((size - 20 - 64 + 8)) 12)
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BCM4908_FW_INT_IMG_FORMAT="bcm4908img"
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return
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;;
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esac
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echo "unknown"
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# Detecting native format is a bit complex (it may start with CFE or
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# JFFS2) so just use bcm4908img instead of bash hacks.
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# Make it the last attempt as bcm4908img detects also vendor formats.
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bcm4908img info -i "$1" > /dev/null && {
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BCM4908_FW_FORMAT="bcm4908img"
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return
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}
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}
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platform_check_image() {
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@@ -58,43 +77,51 @@ platform_check_image() {
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local expected_image=$(platform_expected_image)
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local error=0
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bcm4908img info -i "$1" > /dev/null || {
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echo "Failed to validate BCM4908 image" >&2
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platform_identify "$1"
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[ -z "$BCM4908_FW_FORMAT" ] && {
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echo "Invalid image type. Please use firmware specific for this device."
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notify_firmware_broken
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return 1
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}
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echo "Found $BCM4908_FW_FORMAT firmware for device ${BCM4908_FW_BOARD_ID:----}"
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bcm4908img bootfs -i "$1" ls | grep -q "1-openwrt" || {
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# OpenWrt images have 1-openwrt dummy file in the bootfs.
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# Don't allow backup if it's missing
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notify_firmware_no_backup
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local expected_image="$(platform_expected_image)"
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[ -n "$expected_image" -a -n "$BCM4908_FW_BOARD_ID" -a "$BCM4908_FW_FORMAT $BCM4908_FW_BOARD_ID" != "$expected_image" ] && {
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echo "Firmware doesn't match device ($expected_image)"
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error=1
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}
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case "$(platform_identify "$1")" in
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asus)
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local size=$(wc -c "$1" | cut -d ' ' -f 1)
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local productid=$(get_content "$1" $((size - 20 - 64 + 8)) 12)
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[ -n "$expected_image" -a "asus $productid" != "$expected_image" ] && {
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echo "Firmware productid mismatch ($productid)" >&2
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error=1
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case "$BCM4908_FW_FORMAT" in
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"bcm4908img")
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bcm4908img info -i "$1" > /dev/null || {
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echo "Failed to validate BCM4908 image" >&2
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notify_firmware_broken
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return 1
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}
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;;
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chk)
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local header_len=$((0x$(get_hex_u32_be "$1" 4)))
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local board_id_len=$(($header_len - 40))
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local board_id=$(dd if="$1" skip=40 bs=1 count=$board_id_len 2>/dev/null | hexdump -v -e '1/1 "%c"')
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[ -n "$expected_image" -a "chk $board_id" != "$expected_image" ] && {
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echo "Firmware board_id mismatch ($board_id)" >&2
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error=1
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bcm4908img bootfs -i "$1" ls | grep -q "1-openwrt" || {
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# OpenWrt images have 1-openwrt dummy file in the bootfs.
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# Don't allow backup if it's missing
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notify_firmware_no_backup
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}
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;;
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;;
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*)
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echo "Invalid image type. Please use firmware specific for this device." >&2
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notify_firmware_broken
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error=1
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;;
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case "$BCM4908_FW_INT_IMG_FORMAT" in
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"bcm4908img")
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bcm4908img info -i "$1" > /dev/null || {
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echo "Failed to validate BCM4908 image" >&2
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notify_firmware_broken
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return 1
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}
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bcm4908img bootfs -i "$1" ls | grep -q "1-openwrt" || {
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# OpenWrt images have 1-openwrt dummy file in the bootfs.
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# Don't allow backup if it's missing
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notify_firmware_no_backup
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}
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;;
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esac
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;;
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esac
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return $error
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@@ -189,10 +216,27 @@ platform_do_upgrade_ubi() {
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}
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platform_do_upgrade() {
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# Try NAND aware UBI upgrade for OpenWrt images
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# Below call will exit on success
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bcm4908img bootfs -i "$1" ls | grep -q "1-openwrt" && platform_do_upgrade_ubi "$1"
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platform_identify "$1"
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# Try NAND aware UBI upgrade for OpenWrt images
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case "$BCM4908_FW_FORMAT" in
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"bcm4908img")
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bcm4908img bootfs -i "$1" ls | grep -q "1-openwrt" && platform_do_upgrade_ubi "$1"
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;;
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*)
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case "$BCM4908_FW_INT_IMG_FORMAT" in
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"bcm4908img")
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bcm4908img bootfs -i "$1" ls | grep -q "1-openwrt" && platform_do_upgrade_ubi "$1"
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;;
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*)
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echo "NAND aware sysupgrade is unsupported for $BCM4908_FW_FORMAT format"
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;;
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esac
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;;
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esac
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# Above calls exit on success.
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# If we got here it isn't OpenWrt image or something went wrong.
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echo "Writing whole image to NAND flash. All erase counters will be lost."
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# Find cferam name for new firmware
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