Build Mainline u-boot - bl33:
=============================

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

actual tag : u-boot/v2019.10/sei610-20190905-fix
dev branch :  u-boot/v2019.10/sei610 (NOT COMPATIBLE with Actual AOSP, this branch have changes for A/B support + android10 bootflow)

link to U-Boot aosp release wiki page :
https://gitlab.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.com/baylibre/amlogic/atv/u-boot.git
        cd u-boot
        git checkout u-boot/v2019.10/sei610-20190905-fix
        make [sei510|sei610]_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-sm1-kvim3l-khadas-vims-v2015.01-20191204-095738.tar.gz

Then launch script:

        ./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.com/baylibre/amlogic/atv/u-boot/wikis/U-Boot-for-Yukawa