.. SPDX-License-Identifier: GPL-2.0+ U-Boot for NanoPi-K2 (S905) =========================== NanoPi-K2 is a single board computer manufactured by FriendlyElec with the following specifications: - Amlogic S905 ARM Cortex-A53 quad-core SoC @ 1.5GHz - 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 ------------------ .. code-block:: bash $ export CROSS_COMPILE=aarch64-none-elf- $ make nanopi-k2_defconfig $ make U-Boot Signing with Pre-Built FIP repo -------------------------------------- .. code-block:: bash $ git clone https://github.com/LibreELEC/amlogic-boot-fip --depth=1 $ cd amlogic-boot-fip $ mkdir my-output-dir $ ./build-fip.sh nanopi-k2 /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: .. code-block:: bash $ 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 $ git clone https://github.com/friendlyarm/u-boot.git -b nanopi-k2-v2015.01 amlogic-u-boot $ cd amlogic-u-boot $ sed -i 's/aarch64-linux-gnu-/aarch64-none-elf-/' Makefile $ sed -i 's/arm-linux-/arm-none-eabi-/' arch/arm/cpu/armv8/gxb/firmware/scp_task/Makefile $ make nanopi-k2_defconfig $ make $ export FIPDIR=$PWD/fip Go back to the mainline U-Boot source tree then: .. code-block:: bash $ mkdir fip $ cp $FIPDIR/gxb/bl2.bin fip/ $ cp $FIPDIR/gxb/acs.bin fip/ $ cp $FIPDIR/gxb/bl21.bin fip/ $ cp $FIPDIR/gxb/bl30.bin fip/ $ cp $FIPDIR/gxb/bl301.bin fip/ $ cp $FIPDIR/gxb/bl31.img fip/ $ cp u-boot.bin fip/bl33.bin $ wget https://github.com/LibreELEC/amlogic-boot-fip/raw/master/nanopi-k2/bl1.bin.hardkernel fip/bl1.bin.hardkernel $ chmod +x fip/bl1.bin.hardkernel $ wget https://github.com/LibreELEC/amlogic-boot-fip/raw/master/nanopi-k2/aml_chksum fip/aml_chksum $ chmod +x fip/aml_chksum $ $FIPDIR/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 $ $FIPDIR/fip_create --bl30 fip/bl30_new.bin \ --bl31 fip/bl31.img \ --bl33 fip/bl33.bin \ fip/fip.bin $ sed -i 's/\x73\x02\x08\x91/\x1F\x20\x03\xD5/' fip/bl2.bin $ python $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0 $ $FIPDIR/blx_fix.sh \ fip/bl2_acs.bin \ fip/zero_tmp \ fip/bl2_zero.bin \ fip/bl21.bin \ fip/bl21_zero.bin \ fip/bl2_new.bin \ bl2 $ cat fip/bl2_new.bin fip/fip.bin > fip/boot_new.bin $ $FIPDIR/gxb/aml_encrypt_gxb --bootsig \ --input fip/boot_new.bin --output fip/u-boot.bin Then write U-Boot to SD or eMMC with: .. code-block:: bash $ DEV=/dev/boot_device $ dd if=fip/u-boot.bin of=fip/u-boot.bin.gxbb bs=512 conv=fsync $ dd if=fip/u-boot.bin of=fip/u-boot.bin.gxbb bs=512 seek=9 skip=8 count=87 conv=fsync,notrunc $ dd if=/dev/zero of=fip/u-boot.bin.gxbb bs=512 seek=8 count=1 conv=fsync,notrunc $ dd if=bl1.bin.hardkernel of=fip/u-boot.bin.gxbb bs=512 seek=2 skip=2 count=1 conv=fsync,notrunc $ ./aml_chksum fip/u-boot.bin.gxbb $ dd if=fip/u-boot.gxbb of=$DEV conv=fsync,notrunc bs=512 skip=1 seek=1 $ dd if=fip/u-boot.gxbb of=$DEV conv=fsync,notrunc bs=1 count=440