rock64

commands to flash the files (includes in uboot-rock64.install)

dd if=rksd_load.img of=/dev/mmcblk1 seek=64 conv=notrunc
dd if=u-boot.itb of=/dev/mmcblk1 seek=16384 conv=notrunc

layout, see

http://opensource.rock-chips.com/wiki_U-Boot
http://opensource.rock-chips.com/wiki_Boot_option

ARM-Trusted-Firmware: http://opensource.rock-chips.com/wiki_ATF