Comment 4 for bug 671027

overall it looks fine to me if the prerequisites are fulfilled (i.e. /boot/boot.script needs to exist)
do you actually want to have uInitrd/uImage in /boot given that /boot can not be a vfat i would
suggest using the same solution we use on the preinstalled images and have a hidden or non-data
partition for carrying the actual bootloader files/data where u-boot needs them.