Building Linux Kernel Print

 

This application note explains how to build Linux kernel images for the Emcraft i.MX 8M System-On-Module. Step through the following procedure:

  1. Download the Yocto toolchain from the Emcraft website.
  2. Install the toolchain to your development host. The toolchain can be installed to an arbitrary directory:

    3. $ sh ./fsl-imx-fb-glibc-x86_64-meta-toolchain-qt5-aarch64-toolchain-4.9.51-mx8-beta.sh

  3. Activate the cross-build environment:

    4. $ source /opt/fsl-imx-fb/4.9.51-mx8-beta/environment-setup-aarch64-poky-linux
    $ unset CCACHE_PATH

  4. Download the Emcraft i.MX 8M add-on Yocto layer from the Emcraft website and unpack it to an arbitrary directory on your development host:

    5. $ mkdir build
    $ cd build
    $ tar xfj meta-emcraft-imx8m.tar.bz2

  5. Unpack the Linux tarball:

    6. $ cd meta-emcraft/recipes-kernel/linux/linux-imx
    $ tar xfz linux-emcraft-4.9.51-mx8.tar.gz

  6. Build the i.MX 8M SOM Linux kernel and Device Tree images:

    7. $ export INSTALL_ROOT=`pwd`
    $ make imx8m-som.Image
    $ make imx8m-som.dtb
    $ make modules

  7. The Linux kernel and Device Tree images, and the tarboll with the kernel modules ready for installation to the i.MX 8M SOM are here:

    8. $ ls -1
    ...
    imx8m-som.dtb
    imx8m-som.Image
    kernel_modules.tgz
    ...