Implement support for remote updates via hawkBit

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/stmicroelectronics/stm32mp157-dk/overlay/etc/init.d/S98swupdate

@@ -0,0 +1,60 @@
+#!/bin/sh
+
+DAEMON="swupdate"
+PIDFILE="/var/run/$DAEMON.pid"
+
+PART_STATUS=$(sgdisk -A 4:get:2 /dev/mmcblk0)
+if test "${PART_STATUS}" = "4:2:1" ; then
+	ROOTFS=rootfs-2
+else
+	ROOTFS=rootfs-1
+fi
+
+if test -f /update-ok ; then
+	SURICATTA_ARGS="-c 2"
+	rm -f /update-ok
+fi
+
+start() {
+	printf 'Starting %s: ' "$DAEMON"
+	# shellcheck disable=SC2086 # we need the word splitting
+	start-stop-daemon -b -q -m -S -p "$PIDFILE" -x "/usr/bin/$DAEMON" \
+		-- -f /etc/swupdate/swupdate.cfg -L -e rootfs,${ROOTFS} -u "${SURICATTA_ARGS}"
+	status=$?
+	if [ "$status" -eq 0 ]; then
+		echo "OK"
+	else
+		echo "FAIL"
+	fi
+	return "$status"
+}
+
+stop() {
+	printf 'Stopping %s: ' "$DAEMON"
+	start-stop-daemon -K -q -p "$PIDFILE"
+	status=$?
+	if [ "$status" -eq 0 ]; then
+		rm -f "$PIDFILE"
+		echo "OK"
+	else
+		echo "FAIL"
+	fi
+	return "$status"
+}
+
+restart() {
+	stop
+	sleep 1
+	start
+}
+
+case "$1" in
+        start|stop|restart)
+		"$1";;
+	reload)
+		# Restart, since there is no true "reload" feature.
+		restart;;
+        *)
+                echo "Usage: $0 {start|stop|restart|reload}"
+                exit 1
+esac

board/stmicroelectronics/stm32mp157-dk/overlay/etc/swupdate/postupdate.sh

@@ -1,3 +1,16 @@
 #!/bin/sh
+
+PART_STATUS=$(sgdisk -A 4:get:2 /dev/mmcblk0)
+if test "${PART_STATUS}" = "4:2:1" ; then
+	NEXT_ROOTFS=/dev/mmcblk0p5
+else
+	NEXT_ROOTFS=/dev/mmcblk0p4
+fi
+
+# Add update marker
+mount ${NEXT_ROOTFS} /mnt
+touch /mnt/update-ok
+umount /mnt
+
 sgdisk -A 4:toggle:2 -A 5:toggle:2 /dev/mmcblk0
 reboot

board/stmicroelectronics/stm32mp157-dk/overlay/etc/swupdate/swupdate.cfg

@@ -0,0 +1,11 @@
+globals :
+{
+	postupdatecmd = "/etc/swupdate/postupdate.sh";
+};
+
+suricatta :
+{
+	tenant = "default";
+	id = "DEV001";
+	url = "http://192.168.42.1:8080";
+};

board/stmicroelectronics/stm32mp157-dk/swupdate.config

@@ -0,0 +1,4 @@
+CONFIG_BOOTLOADER_NONE=y
+CONFIG_SURICATTA=y
+CONFIG_WEBSERVER=y
+CONFIG_RAW=y