U-Boot for ODROID-HC4 (S905X3)
ODROID-HC4 is a variant of the ODROID-C4 single board computer manufactured by Hardkernel with the following specification:
Amlogic S905X3 Arm Cortex-A55 quad-core SoC
4GB DDR4 SDRAM
16MB XT25F128B SPI-NOR flash
Gigabit Ethernet
HDMI 2.1 display
7-pin GPIO header for OLED display and RTC
1x USB 2.0 host (micro)
2x SATA ports via ASM1061 PCIe to SATA controller
microSD
UART serial
Infrared receiver
Schematics are available on the manufacturer website.
U-Boot Compilation
$ export CROSS_COMPILE=aarch64-none-elf-
$ make odroid-hc4_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-hc4 /path/to/u-boot/u-boot.bin my-output-dir
U-Boot Manual Signing
Amlogic does not provide sources for the firmware and tools needed to create a bootloader image so it is necessary to obtain binaries from sources published by the board vendor:
$ wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
$ wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
$ tar xvfJ gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
$ tar xvfJ gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
$ export PATH=$PWD/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux/bin:$PWD/gcc-linaro-arm-none-eabi-4.8-2013.11_linux/bin:$PATH
$ DIR=odroid-hc4
$ git clone --depth 1 https://github.com/hardkernel/u-boot.git -b odroidg12-v2015.01 $DIR
$ cd odroid-hc4
$ make odroidc4_defconfig
$ make
$ export UBOOTDIR=$PWD
Go back to mainline U-Boot source tree then:
$ mkdir fip
$ wget https://github.com/BayLibre/u-boot/releases/download/v2017.11-libretech-cc/blx_fix_g12a.sh -O fip/blx_fix.sh
$ cp $UBOOTDIR/build/scp_task/bl301.bin fip/
$ cp $UBOOTDIR/build/board/hardkernel/odroidc4/firmware/acs.bin fip/
$ cp $UBOOTDIR/fip/g12a/bl2.bin fip/
$ cp $UBOOTDIR/fip/g12a/bl30.bin fip/
$ cp $UBOOTDIR/fip/g12a/bl31.img fip/
$ cp $UBOOTDIR/fip/g12a/ddr3_1d.fw fip/
$ cp $UBOOTDIR/fip/g12a/ddr4_1d.fw fip/
$ cp $UBOOTDIR/fip/g12a/ddr4_2d.fw fip/
$ cp $UBOOTDIR/fip/g12a/diag_lpddr4.fw fip/
$ cp $UBOOTDIR/fip/g12a/lpddr3_1d.fw fip/
$ cp $UBOOTDIR/fip/g12a/lpddr4_1d.fw fip/
$ cp $UBOOTDIR/fip/g12a/lpddr4_2d.fw fip/
$ cp $UBOOTDIR/fip/g12a/piei.fw fip/
$ cp $UBOOTDIR/fip/g12a/aml_ddr.fw fip/
$ cp u-boot.bin fip/bl33.bin
$ sh fip/blx_fix.sh \
fip/bl30.bin \
fip/zero_tmp \
fip/bl30_zero.bin \
fip/bl301.bin \
fip/bl301_zero.bin \
fip/bl30_new.bin \
bl30
$ sh fip/blx_fix.sh \
fip/bl2.bin \
fip/zero_tmp \
fip/bl2_zero.bin \
fip/acs.bin \
fip/bl21_zero.bin \
fip/bl2_new.bin \
bl2
$ $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl30sig --input fip/bl30_new.bin \
--output fip/bl30_new.bin.g12a.enc \
--level v3
$ $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl3sig --input fip/bl30_new.bin.g12a.enc \
--output fip/bl30_new.bin.enc \
--level v3 --type bl30
$ $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl3sig --input fip/bl31.img \
--output fip/bl31.img.enc \
--level v3 --type bl31
$ $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl3sig --input fip/bl33.bin --compress lz4 \
--output fip/bl33.bin.enc \
--level v3 --type bl33 --compress lz4
$ $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bl2sig --input fip/bl2_new.bin \
--output fip/bl2.n.bin.sig
$ $UBOOTDIR/fip/g12a/aml_encrypt_g12a --bootmk \
--output fip/u-boot.bin \
--bl2 fip/bl2.n.bin.sig \
--bl30 fip/bl30_new.bin.enc \
--bl31 fip/bl31.img.enc \
--bl33 fip/bl33.bin.enc \
--ddrfw1 fip/ddr4_1d.fw \
--ddrfw2 fip/ddr4_2d.fw \
--ddrfw3 fip/ddr3_1d.fw \
--ddrfw4 fip/piei.fw \
--ddrfw5 fip/lpddr4_1d.fw \
--ddrfw6 fip/lpddr4_2d.fw \
--ddrfw7 fip/diag_lpddr4.fw \
--ddrfw8 fip/aml_ddr.fw \
--ddrfw9 fip/lpddr3_1d.fw \
--level v3
Then write U-Boot to SD or SPI-NOR 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