+get_magic_at() {
+ local file="$1"
+ local pos="$2"
+ get_image "$file" | dd bs=1 count=2 skip="$pos" 2>/dev/null | hexdump -v -n 2 -e '1/1 "%02x"'
+}
+
+platform_check_image_clearfog() {
+ local file="$1"
+ local magic
+
+ magic=$(get_magic_at "$file" 510)
+ [ "$magic" != "55aa" ] && {
+ echo "Failed to verify MBR boot signature."
+ return 1
+ }
+
+ return 0;
+}
+
+platform_do_upgrade_clearfog() {
+ sync
+ get_image "$1" | dd of=/dev/mmcblk0 bs=2M conv=fsync
+ sleep 1
+}
+
+platform_copy_config_clearfog() {
+ mkdir -p /boot
+ [ -f /boot/kernel.img ] || mount -t vfat -o rw,noatime /dev/mmcblk0p1 /boot
+ cp -af "$CONF_TAR" /boot/
+ sync
+ umount /boot
+}