L4T(BSP) Build Env

Reference

https://catalog.ngc.nvidia.com/orgs/nvidia/containers/jetpack-linux-aarch64-crosscompile-x86

Sample build kernel

For build L4T 35.4.1(Jetpack 5.1.2)

1. Pull build env image for Jetpack 5.1.2

   sudo docker pull nvcr.io/nvidia/jetpack-linux-aarch64-crosscompile-x86:5.1.2

2. Run the container

   docker run -it --privileged --net=host -v /dev/bus/usb:/dev/bus/usb -v ./workspace:/workspace nvcr.io/nvidia/jetpack-linux-aarch64-crosscompile-x86:5.1.2

3. Extract the targetfs and toolchain

   cd /l4t
   cat targetfs.tbz2.* > targetfs.tbz2
   tar -I lbzip2 -xf targetfs.tbz2
   mkdir toolchain
   tar -C toolchain -xf toolchain.tar.gz

4. Build L4T public sources(build kernel)

   cd /workspace
   wget https://developer.nvidia.com/downloads/embedded/l4t/r35_release_v4.1/sources/public_sources.tbz2
   tar -xjf public_sources.tbz2
   cd Linux_for_Tegra/source/public
   tar -xjf kernel_src.tbz2
   mkdir kernel_out
   CROSS_COMPILE_AARCH64=/l4t/toolchain/bin/aarch64-buildroot-linux-gnu- CROSS_COMPILE_AARCH64_PATH=/l4t/toolchain NV_TARGET_BOARD=t186ref ./nvbuild.sh -o ${PWD}/kernel_out