Preparations

Repositories


git clone https://github.com/kimdukyu/rpi4-uboot.git
git clone https://bitbucket.org/jayleekr0125/rpi-5.4.y.git

Build a kernel, dtb, rootfs, etc.


git clone git://git.buildroot.net/buildroot

Write on SD Card

Update the Image and dtb files


git clone https://github.com/kimdukyu/rpi4-toolchain.git
git clone https://github.com/kimdukyu/rpi4-kernel.git
git clone --depth=1 --branch=rpi-5.12.y https://github.com/raspberrypi/linux    # replaceable wth the rpi4-kernel

Settings

WLAN setting

WLAN setting