Build Mainline u-boot - bl33:

Main Wiki Page : https://gitlab.baylibre.com/baylibre/amlogic/atv/u-boot/wikis/home

Download the toolchain : gcc-linaro-7.2.1-2017.11-x86_64_aarch64-elf http://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

Download U-Boot Source Code From : https://gitlab.baylibre.com/baylibre/amlogic/atv/u-boot.git

actual tag : u-boot/v2021.07/integ-20210712 dev branch : u-boot/v2021.07/integ

link to U-Boot aosp release wiki page : https://gitlab.baylibre.com/baylibre/amlogic/atv/u-boot/wikis/U-Boot-for-Yukawa-Release

Compile:

    export PATH=<path-to-toolchain>/gcc-linaro-7.2.1-2017.11-x86_64_aarch64-elf/bin:$PATH
    export CROSS_COMPILE=aarch64-elf-
    git clone https://gitlab.baylibre.com/baylibre/amlogic/atv/u-boot.git
    cd u-boot
    git checkout u-boot/v2021.07/integ-20210712
    make [sei510|sei610|sei610_ab|khadas-vim3_android|khadas-vim3_android_ab|khadas-vim3l_android|khadas-vim3l_android_ab]_defconfig
    make

Generate fip binary

use tarball in fip_packages folder and untar it

• For sei510 (yukawa_sei510): tar -xaf fip-collect-g12a-g12a_u200_v1-amlogic-dev_9.2.1811_21-20191203-113239.tar.gz

• For sei610 (yukawa): tar -xaf fip-collect-g12a-sm1_ac214_v1-amlogic-dev_9.2.1811_21-20191204-161855.tar.gz

• For VIM3L (yukawa): tar -xaf fip-collect-g12a-kvim3l-khadas-vims-pie-20210111-211224.tar.gz

• For VIM3 (yukawa): tar -xaf fip-collect-g12b-kvim3-khadas-vims-pie-20210111-211833.tar.gz

Then launch script for scripts folder:

    ./generate-bins-new.sh <fip-collect-directory> <target-bl33-binary>

flash result with: fastboot flash bootloader uboot-bins/u-boot.bin fastboot erase bootenv fastboot reboot bootloader

after reboot if partitions table need to be updated: fastboot oem format

More informations to update and flash bootloader on Yukawa: https://gitlab.baylibre.com/baylibre/amlogic/atv/u-boot/wikis/U-Boot-for-Yukawa

Generate new fip_packages for Khadas VIM3/3L

• Launch collect script for script foler : ./collect-khadas_binaries-git-refboard.sh

branch to use for VIM3/3L : khadas-vims-pie soc VIM3 : g12b VIM3L: sm1

refboard VIM3 : kvim3 VIM3L: kvim3l

• Generate tarball : Example: tar -czf fip-collect-g12b-kvim3-khadas-vims-pie-20210111-211833.tar.gz fip-collect-g12b-kvim3-khadas-vims-pie-20210111-211833

    Adapt folder name with folder generate by collect script.
  

• to generate fip bin cf "Generate fip binary"