Update from original Marvell U-Boot to mainline U-Boot: ------------------------------------------------------- Generate the U-Boot image with these commands: $ make clearfog_defconfig $ make The resulting image including the SPL binary with the full DDR setup is "u-boot-spl.kwb". Now all you need to do is copy this image on a SD card. For example with this command: $ sudo dd if=u-boot-spl.kwb of=/dev/sdX bs=512 seek=1 Please use the correct device node for your setup instead of "/dev/sdX" here!