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Low-Level development

Introduces how to download and build uboot, kernel, os etc.

Environment configuration​

Ubuntu 20.04 and above are recommended

code download​


$ repo init -u https://github.com/radxa/manifests.git -b Android12_Radxa_rk14 -m rockchip-s-release.xml
$ repo sync -d -c -j4

build​

Suitable for first compilation

Rock5B

radxa:rock-android12 $ source build/envsetup.sh
radxa:rock-android12 $ lunch RadxaRock5B-userdebug
radxa:rock-android12 $ ./build.sh -UACKup
# get images from IMAGE directory

Rock5BPlus

radxa:rock-android12 $ source build/envsetup.sh
radxa:rock-android12 $ lunch RadxaRock5BGen2-userdebug
radxa:rock-android12 $ ./build.sh -UACKup
# get images from IMAGE directory

Wait for the compilation to complete and you can find the image in the IMAGE directory

Compile separately​

Suitable for compiling after minor modifications

For example, only modify

U-boot

radxa:rock-android12 $ source build/envsetup.sh
radxa:rock-android12 $ lunch RadxaRock5B-userdebug
radxa:rock-android12 $ ./build.sh -AUup

Kernel

radxa:rock-android12 $ source build/envsetup.sh
radxa:rock-android12 $ lunch RadxaRock5B-userdebug
radxa:rock-android12 $ ./build.sh -ACKup

AOSP

radxa:rock-android12 $ source build/envsetup.sh
radxa:rock-android12 $ lunch RadxaRock5B-userdebug
radxa:rock-android12 $ ./build.sh -Aup

Wait for the compilation to complete and you can find the image in the IMAGE directory