Watchdog extension

config/boards/helios64.conf

@@ -9,9 +9,10 @@ KERNEL_TEST_TARGET="current"
 MODULES="lm75 ledtrig-netdev"
 MODULES_LEGACY="lm75"
 FULL_DESKTOP="yes"
-PACKAGE_LIST_BOARD="mdadm i2c-tools fancontrol watchdog"
+PACKAGE_LIST_BOARD="mdadm i2c-tools fancontrol"
 PACKAGE_LIST_BOARD_REMOVE="fake-hwclock"
 CPUMAX="1800000"
+enable_extension "watchdog"
 
 if [[ "$ROOTFS_TYPE" =~ btrfs|f2fs|nilfs2|nfs|xfs ]]; then
 	BOOTFS_TYPE=${BOOTFS_TYPE:-ext4}

config/boards/odroidm1.conf

@@ -21,6 +21,8 @@ BOOTDIR="u-boot-${BOARD}"
 # The overlays for this board are prefixed by 'rockchip-rk3568-hk' (see for example patch/kernel/archive/rockchip64-6.6/overlay/rockchip-rk3568-hk-i2c0.dts)
 OVERLAY_PREFIX="rockchip-rk3568-hk"
 
+enable_extension "watchdog"
+
 function post_family_config__uboot_config() {
 	display_alert "$BOARD" "u-boot ${BOOTBRANCH_BOARD} overrides" "info"
 	BOOTDELAY=1

config/boards/odroidn2.conf

@@ -12,6 +12,7 @@ BOOTCONFIG="odroid-n2_defconfig" # For mainline uboot
 
 # Enable btrfs support in u-boot
 enable_extension "uboot-btrfs"
+enable_extension "watchdog"
 
 # Newer u-boot for the N2/N2+
 BOOTBRANCH_BOARD="tag:v2026.01-rc2"

extensions/watchdog.sh

@@ -0,0 +1,12 @@
+# for boards with watchdog support - add watchdog package and
+# enable hardware watchdog device (/dev/watchdog) support in config
+
+function extension_prepare_config__add_to_image_watchdog() {
+	display_alert "Extension: ${EXTENSION}: Adding extra package to image" "watchdog" "info"
+	add_packages_to_image watchdog
+}
+
+function post_customize_image__enable_watchdog_device_config() {
+	display_alert "Enable /dev/watchdog in /etc/watchdog.conf ${HOOK_POINT}" "${EXTENSION}" "info"
+	sed -e 'sX^#watchdog-deviceXwatchdog-deviceX' -i  "${SDCARD}"/etc/watchdog.conf
+}