Enable watchdog on Clearfog
Here's how it works:
- U-Boot configures the watchdog and leaves it running. It will still
reset the watchdog while the CLI is active, though, so interactive
sessions are not really affected by this.
- The Linux kernel simply ignores the watchdog. It won't do anything.
- systemd reconfigures the watchdog and ensures that it's being reset
periodically.
If for some reason systemd cannot configure/reset the watchdog, the
system will eventually reboot because the kernel had not disabled the
watchdog earlier in the boot -- i.e., U-Boot's configuration is still
live.
Change-Id: I1cb7eefe8969139aceba6c0559983240c6dad49e
diff --git a/configs/czechlight_clearfog_defconfig b/configs/czechlight_clearfog_defconfig
index a47b63e..9c93dfd 100644
--- a/configs/czechlight_clearfog_defconfig
+++ b/configs/czechlight_clearfog_defconfig
@@ -13,7 +13,7 @@
BR2_INIT_SYSTEMD=y
# BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set
BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/common/overlay/"
-BR2_ROOTFS_POST_BUILD_SCRIPT="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/post-build.sh"
+BR2_ROOTFS_POST_BUILD_SCRIPT="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/common/systemd-watchdog.sh $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/post-build.sh"
BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
BR2_ROOTFS_POST_SCRIPT_ARGS="-c $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/genimage.cfg"
BR2_LINUX_KERNEL=y
@@ -33,6 +33,7 @@
BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
BR2_TARGET_UBOOT_CUSTOM_VERSION=y
BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2017.09"
+BR2_TARGET_UBOOT_PATCH="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/patches/u-boot/0001-Unconditionally-enable-watchdog-timer-on-Clearfog.patch"
BR2_TARGET_UBOOT_BOARD_DEFCONFIG="clearfog"
# BR2_TARGET_UBOOT_FORMAT_BIN is not set
BR2_TARGET_UBOOT_FORMAT_CUSTOM=y