- LibreTech CC/ : branch
libretech-ccfor Amlogic U-Boot, branchu-boot/v2017.11/libretech-ccfor v2017.11 based U-Boot
Big FAT Warning : Support for Mainline U-boot will require Linux 4.16, or the Linux 4.14 with patches you can find at : https://github.com/libre-computer-project/libretech-linux If you run another kernel, stick to the Amlogic U-Boot in the next section.
Checkout vendor u-boot source and prepare environment:
# git clone https://github.com/BayLibre/u-boot.git -b libretech-cc libretech-cc-amlogic-u-boot
# 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:$PATH
Build vendor u-boot:
# cd libretech-cc-amlogic-u-boot
libretech-cc-amlogic-u-boot # make libretech_cc_defconfig
libretech-cc-amlogic-u-boot # make
libretech-cc-amlogic-u-boot # export FIPDIR=$PWD/fip
libretech-cc-amlogic-u-boot # cd -
Checkout mainline U-boot :
# git clone https://github.com/BayLibre/u-boot.git -b u-boot/v2017.11/libretech-cc libretech-cc-u-boot
# wget https://releases.linaro.org/components/toolchain/binaries/7.2-2017.11/aarch64-elf/gcc-linaro-7.2.1-2017.11-x86_64_aarch64-elf.tar.xz
# tar xvfJ gcc-linaro-7.2.1-2017.11-x86_64_aarch64-elf.tar.xz
# export PATH=$PWD/gcc-linaro-7.2.1-2017.11-x86_64_aarch64-elf/bin:$PATH
# cd libretech-cc-u-boot
libretech-cc-u-boot # make libretech-cc_defconfig
libretech-cc-u-boot # make CROSS_COMPILE=aarch64-elf-
Generate the final image :
libretech-cc-u-boot # mkdir fip
libretech-cc-u-boot # cp $FIPDIR/gxl/bl2.bin fip/
libretech-cc-u-boot # cp $FIPDIR/gxl/acs.bin fip/
libretech-cc-u-boot # cp $FIPDIR/gxl/bl21.bin fip/
libretech-cc-u-boot # cp $FIPDIR/gxl/bl30.bin fip/
libretech-cc-u-boot # cp $FIPDIR/gxl/bl301.bin fip/
libretech-cc-u-boot # cp $FIPDIR/gxl/bl31.img fip/
libretech-cc-u-boot # cp u-boot.bin fip/bl33.bin
libretech-cc-u-boot # $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
libretech-cc-u-boot # $FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0
libretech-cc-u-boot # $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
libretech-cc-u-boot # $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl30_new.bin
libretech-cc-u-boot # $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl31.img
libretech-cc-u-boot # $FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl33.bin
libretech-cc-u-boot # $FIPDIR/gxl/aml_encrypt_gxl --bl2sig --input fip/bl2_new.bin --output fip/bl2.n.bin.sig
libretech-cc-u-boot # $FIPDIR/gxl/aml_encrypt_gxl --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
Binaries should be available in fip directory :
fip/
├── ...
├── u-boot.bin (for eMMC)
├── u-boot.bin.sd.bin (for SDCard)
└── ...
To install on blank SDCard (assuming SDCard in on /dev/mmcblk0):
# sudo mkfs.vfat /dev/mmcblk0p1
# sudo dd if=fip/u-boot.bin.sd.bin of=/dev/mmcblk0 conv=fsync,notrunc bs=1 count=444
# sudo dd if=fip/u-boot.bin.sd.bin of=/dev/mmcblk0 conv=fsync,notrunc bs=512 skip=1 seek=1
# sync
To install on an eMMC you will first need to boot the board with an eMMC attached to it. From the running Linux on the board follow these steps:
Clean the first block of the eMMC where u-boot will be copied:
$ dd if=/dev/zero of=/dev/mmcblk0 bs=512 count=1
Then copy u-boot to the eMMC (assuming the eMMC device is mmcblk0) by running :
$ dd if=u-boot.bin of=/dev/mmcblk0 bs=512 seek=1
i.e. to save the u-boot environment on the eMMC and completely get rid of the SD card.
- Apply this patch to mailine u-boot (previously cloned repo)
libretech-cc-u-boot:
diff --git a/configs/libretech-cc_defconfig b/configs/libretech-cc_defconfig
index 7eb4e38f5001..3414191e873c 100644
--- a/configs/libretech-cc_defconfig
+++ b/configs/libretech-cc_defconfig
@@ -8,7 +8,7 @@ CONFIG_DEBUG_UART=y
# CONFIG_ENV_IS_NOWHERE is not set
CONFIG_ENV_IS_IN_FAT=y
CONFIG_ENV_FAT_INTERFACE="mmc"
-CONFIG_ENV_FAT_DEVICE_AND_PART="0:auto"
+CONFIG_ENV_FAT_DEVICE_AND_PART="1:auto"
CONFIG_ENV_FAT_FILE="uboot.env"
CONFIG_FAT_WRITE=y
# CONFIG_DISPLAY_CPUINFO is not set
This will tell u-boot to save and load the environment from the eMMC (device 1) and not the SD card (device 0).
- Follow the previous steps to
Generate the final image. - Re-flash u-boot on the eMMC following
Install on eMMC.
If not already done, create a FAT partition on the eMMC:
# fdisk /dev/mmcblk0
n
p
1
100
400
w
# mkfs.vfat /dev/mmcblk0p1
You can reboot and saveenv/loadenv from eMMC.
Checkout source and prepare environment:
# git clone https://github.com/BayLibre/u-boot.git -b libretech-cc
# 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
Build:
# cd libretech-u-boot
libretech-u-boot # make libretech_cc_defconfig
libretech-u-boot # make
Binaries should be available in fip directory :
fip/
├── ...
├── u-boot.bin (for eMMC)
├── u-boot.bin.sd.bin (for SDCard)
└── ...
Install on blank SDCard (assuming SDCard in on /dev/mmcblk0):
# sudo mkfs.vfat /dev/mmcblk0p1
# sudo dd if=fip/u-boot.bin.sd.bin of=/dev/mmcblk0 conv=fsync,notrunc bs=1 count=444
# sudo dd if=fip/u-boot.bin.sd.bin of=/dev/mmcblk0 conv=fsync,notrunc bs=512 skip=1 seek=1
# sync