snow chainloading partition

#!/bin/bash

diskname=/dev/sde
# uboot=/tmp/boot/u-boot.img
uboot=u-boot.img

mkimage -A arm -O linux -T kernel -C none -a 0x43e00000 -e 0x43e00000 -n uboot -d u-boot-dtb.bin u-boot.img

echo "console=tty1 debug verbose" > /tmp/config
vbutil_kernel --pack /tmp/newkern \
        --keyblock /usr/share/vboot/devkeys/kernel.keyblock \
        --version 1 \
        --signprivate /usr/share/vboot/devkeys/kernel_data_key.vbprivk \
        --config=/tmp/config --vmlinuz $uboot --arch arm
kpartx -av $diskname
dd if=/tmp/newkern of=$diskname\1
kpartx -d $diskname
cgpt add -t kernel -i 1 -S 1 -T 5 -P 10 -l U-BOOT $diskname