Build the kernel

to generate old u-boot compatible uImage

ARCH=arm make ox820_defconfig

ARCH=arm make menuconfig

Boot options --->

[*] Use appended device tree blob to zImage (EXPERIMENTAL)

[*] Supplement the appended DTB with traditional ATAG informati

you may also want to disable PCI support if you device does not have one

ARCH=arm make -j8 zImage ox820-pogoplug-pro.dtb

cat arch/arm/boot/zImage arch/arm/boot/dts/ox820-pogoplug-pro.dtb > arch/arm/boot/zImage.fdt

/bin/sh scripts/mkuboot.sh -A arm -O linux -C none -T kernel -a 0x60008000 -e 0x60008000 -n 'Linux-3.11.1+' -d arch/arm/boot/zImage.fdt arch/arm/boot/uImage