Kernel Build Manual

Prerequisites

It is up to developers to prepare the host machine; it requires:

• Setup Cross Compiler

CompuLab Linux Kernel setup

• WorkDir:

mkdir -p compulab-bsp/linux-compulab && cd compulab-bsp/linux-compulab

• Set a CompuLab machine:

Machine	Command Line
ucm-imx8m-plus	export MACHINE=ucm-imx8m-plus
som-imx8m-plus	export MACHINE=som-imx8m-plus
iot-gate-imx8plus	export MACHINE=iot-gate-imx8plus
ucm-imx93	export MACHINE=ucm-imx93

• Clone the source code:

git clone -b linux-compulab_v5.15.71 https://github.com/compulab-yokneam/linux-compulab.git .

Compile the Kernel

• Apply the default CompuLab config:

make ${MACHINE}_defconfig compulab.config

• Ussue menuconfig on order to change the default CompuLab configuration:

make menuconfig

• Build the kernel

nice make -j`nproc`

• Builds' targets

target	make command
Uncompressed kernel image	make -j`nproc` Image
Build all modules	make -j`nproc` modules
Build device tree blobs	make -j`nproc` dtbs

• Deploy the CompuLab Linux Kernel to CompuLab devices

ES

To Cross Compile:

export MACHINE=som-imx8m-plus

export ARCH=arm64
export CROSS_COMPILE=/opt/gcc-arm-9.2-2019.12-x86_64-aarch64-none-linux-gnu/bin/aarch64-none-linux-gnu-

${CROSS_COMPILE}gcc --version

Apply the default CompuLab config:

make ${MACHINE}_defconfig compulab.config

Ussue menuconfig on order to change the default CompuLab configuration:

make menuconfig

Build the kernel:

nice make -j`nproc`

Builds' targets:

target	make command
Uncompressed kernel image	make -jnproc Image
Build all modules	make -jnproc modules
Build device tree blobs	make -jnproc dtbs