# 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 }