rpi4-kernel-build.yml

# This is a callable workflow for the RPI4 RT kernel build. It is based on the Dockerfile located in the repo
# Workflow can be started from another workflow
# The build takes 1.5 hours and artifacts are available under workflow artifacts
#  - kernel .deb packages
# TODO:
#  - create Docker image and push it to the packages

name: 'RPI4 RT Kernel build'

# Controls when the workflow will run
on:
  workflow_call:
    inputs:
      uname_r:
        description: 'raspi release in a form of <5.15.0-1023-raspi>'
        default: ''
        required: false
        type: string
      rt_patch:
        description: 'RT patch in a form of <5.15.76-rt53>'
        default: ''
        required: false
        type: string
      kernel_version:
        description: 'Raspi kernel version'
        default: '5.15.0'
        required: false
        type: string
      ubuntu_version:
        description: 'Ubuntu version'
        default: 'jammy'
        required: false
        type: string
      lttng_version:
        description: 'LTTNG version'
        default: '2.13'
        required: false
        type: string
env:
  ARCH: arm64
  triple: aarch64-linux-gnu
  KERNEL_DIR: linux-raspi

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  build:
    # Use Ubuntu 22.04 runner
    runs-on: ubuntu-22.04

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
      # Checks-out repository under $GITHUB_WORKSPACE, so your job can access it
      - uses: actions/checkout@v3

      - name: Get available space
        run: |
          cd /
          df -H

      - name: Print input params
        run: |
          echo UBUNTU_VERSION=${{ inputs.ubuntu_version }}
          echo KERNEL_VERSION=${{ inputs.kernel_version }}
          echo UNAME_R=${{ inputs.uname_r }}
          echo RT_PATCH=${{ inputs.rt_patch }}
          echo LTTNG_VERSION=${{ inputs.lttng_version }}

      - name: Build rtwg-image docker image
        uses: docker/build-push-action@v3
        with:
          context: .
          build-args: |
            UBUNTU_VERSION=${{ inputs.ubuntu_version }}
            KERNEL_VERSION=${{ inputs.kernel_version }}
            UNAME_R=${{ inputs.uname_r }}
            RT_PATCH=${{ inputs.rt_patch }}
            LTTNG_VERSION=${{ inputs.lttng_version }}
          push: false
          tags: rtwg-image:22.04

      - name: Build kernel
        uses: addnab/docker-run-action@v3
        with:
          image: rtwg-image:22.04
          options: -v ${{ github.workspace }}:/work
          run:  |
            cd /home/user/linux_build/linux-raspi
            make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- LOCALVERSION=-raspi -j `nproc` bindeb-pkg
            sudo cp ../*.deb /work

      - uses: actions/upload-artifact@v3
        with:
          name: 'RPI4 RT Kernel deb packages'
          path: ${{ github.workspace }}/*.deb