U-Boot for ODROID-GO-ULTRA (S922X)

The ODROID GO ULTRA is a portable gaming device with the following characteristics:

  • Amlogic S922X SoC

  • RK817 & RK818 PMICs

  • 2GiB LPDDR4

  • On board 16GiB eMMC

  • Micro SD Card slot

  • 5inch 854×480 MIPI-DSI TFT LCD

  • Earphone stereo jack, 0.5Watt 8Ω Mono speaker

  • Li-Polymer 3.7V/4000mAh Battery

  • USB-A 2.0 Host Connector

  • x16 GPIO Input Buttons

  • 2x ADC Analog Joysticks

  • USB-C Port for USB2 Device and Charging

U-Boot Compilation

$ export CROSS_COMPILE=aarch64-none-elf-
$ make odroid-go-ultra_defconfig
$ make

U-Boot Signing with Pre-Built FIP repo

$ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1
$ cd amlogic-boot-fip
$ mkdir my-output-dir
$ ./build-fip.sh odroid-go-ultra /path/to/u-boot/u-boot.bin my-output-dir

Then write the image to SD or eMMC with:

$ DEV=/dev/boot_device
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1
$ dd if=fip/u-boot.bin.sd.bin of=$DEV conv=fsync,notrunc bs=1 count=440