U-Boot for ODROID-C2¶
ODROID-C2 is a single board computer manufactured by Hardkernel Co. Ltd with the following specifications:
Amlogic S905 ARM Cortex-A53 quad-core SoC @ 2GHz
ARM Mali 450 GPU
2GB DDR3 SDRAM
Gigabit Ethernet
HDMI 2.0 4K/60Hz display
40-pin GPIO header
4 x USB 2.0 Host, 1 x USB OTG
eMMC, microSD
Infrared receiver
Schematics are available on the manufacturer website.
U-Boot compilation¶
$ export CROSS_COMPILE=aarch64-none-elf-
$ make odroid-c2_defconfig
$ make
Image creation¶
For simplified usage, pleaser refer to Pre-Generated FIP file set with codename odroid-c2
Amlogic doesn’t provide sources for the firmware and for tools needed to create the bootloader image, so it is necessary to obtain them from the git tree published by the board vendor:
$ DIR=odroid-c2
$ git clone --depth 1 \
https://github.com/hardkernel/u-boot.git -b odroidc2-v2015.01 \
$DIR
$ $DIR/fip/fip_create --bl30 $DIR/fip/gxb/bl30.bin \
--bl301 $DIR/fip/gxb/bl301.bin \
--bl31 $DIR/fip/gxb/bl31.bin \
--bl33 u-boot.bin \
$DIR/fip.bin
$ $DIR/fip/fip_create --dump $DIR/fip.bin
$ cat $DIR/fip/gxb/bl2.package $DIR/fip.bin > $DIR/boot_new.bin
$ $DIR/fip/gxb/aml_encrypt_gxb --bootsig \
--input $DIR/boot_new.bin \
--output $DIR/u-boot.img
$ dd if=$DIR/u-boot.img of=$DIR/u-boot.gxbb bs=512 skip=96
and then write the image to SD with:
$ DEV=/dev/your_sd_device
$ BL1=$DIR/sd_fuse/bl1.bin.hardkernel
$ dd if=$BL1 of=$DEV conv=fsync bs=1 count=442
$ dd if=$BL1 of=$DEV conv=fsync bs=512 skip=1 seek=1
$ dd if=$DIR/u-boot.gxbb of=$DEV conv=fsync bs=512 seek=97