Building Linux Kernel

This application note explains how to build Linux kernel images for the Emcraft STM32MP1 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:

    $ sh ./
  3. Activate the cross-build environment:

    $ source /opt/st/stm32mp15-som/4.2.1-snapshot/environment-setup-cortexa7t2hf-neon-vfpv4-ostl-linux-gnueabi $ unset CCACHE_PATH
  4. Clone the Emcraft Linux tree:

    $ mkdir build$ cd build $ git clone -b linux-stm32mp1-4.0.1 $ cd linux-stm32mp
  5. Configure the kernel tree build:

  6. Build the kernel image:

  7. Build DTB (the device tree name is stm32mp157d-som.dtb for the 800MHz STM32MP1-SOM variant):

  8. Build kernel modules: