.github/workflows: Create workflow to CI kernel builds

Builds the bcmrpi, bcm2709, bcm2711, and bcm2835 32 bit kernels,
and defconfig and bcm2711 64bit kernels, saving the artifacts for
7 days.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

diff --git a/.github/workflows/kernel-build.yml b/.github/workflows/kernel-build.yml
new file mode 100644 (file)
index 0000000..8e551dc
--- /dev/null
+++ b/.github/workflows/kernel-build.yml
@@ -0,0 +1,266 @@
+name: Pi kernel build tests
+
+on:
+  pull_request:
+    paths-ignore:
+      - '.github/**'
+    branches: [ "rpi-*" ]
+  push:
+    paths-ignore:
+      - '.github/**'
+    branches: [ "rpi-*" ]
+  workflow_dispatch:
+
+env:
+  NUM_JOBS: 3
+
+jobs:
+  build-bcm2835:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Update install
+      run:
+        sudo apt-get update
+
+    - name: Install toolchain
+      run:
+        sudo apt-get install gcc-arm-linux-gnueabihf
+      timeout-minutes: 5
+
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+        clean: true
+
+    - name: Build kernel
+      run: |
+        mkdir ${{github.workspace}}/build
+        make ARCH=arm KERNEL=kernel CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build bcm2835_defconfig
+        make ARCH=arm KERNEL=kernel CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build -j ${{env.NUM_JOBS}} Image modules dtbs
+        mkdir -p ${{github.workspace}}/install/boot
+        make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build INSTALL_MOD_PATH=${{github.workspace}}/install modules_install
+        cp ${{github.workspace}}/build/arch/arm/boot/dts/*.dtb ${{github.workspace}}/install/boot/
+        cp -r ${{github.workspace}}/build/arch/arm/boot/dts/overlays/*.dtb* ${{github.workspace}}/install/boot/
+        cp ${{github.workspace}}/build/arch/arm/boot/Image ${{github.workspace}}/install/boot/
+
+    - name: Tar build
+      run: tar -cvf bcm2835_build.tar -C ${{github.workspace}}/install .
+
+    - name: Upload results
+      uses: actions/upload-artifact@v3
+      with:
+        name: bcm2835_build
+        path: bcm2835_build.tar
+        retention-days: 7
+
+  build-arm64:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Update install
+      run:
+        sudo apt-get update
+
+    - name: Install toolchain
+      run:
+        sudo apt-get install gcc-aarch64-linux-gnu
+      timeout-minutes: 5
+
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+        clean: true
+
+    - name: Build kernel
+      run: |
+        mkdir ${{github.workspace}}/build
+        make ARCH=arm64 KERNEL=kernel8 CROSS_COMPILE=aarch64-linux-gnu- O=${{github.workspace}}/build defconfig
+        make ARCH=arm64 KERNEL=kernel8 CROSS_COMPILE=aarch64-linux-gnu- O=${{github.workspace}}/build -j ${{env.NUM_JOBS}} Image.gz modules dtbs
+        mkdir -p ${{github.workspace}}/install/boot
+        make ARCH=arm64 KERNEL=kernel8 CROSS_COMPILE=aarch64-linux-gnu- O=${{github.workspace}}/build INSTALL_MOD_PATH=${{github.workspace}}/install modules_install
+        cp ${{github.workspace}}/build/arch/arm64/boot/dts/broadcom/*.dtb ${{github.workspace}}/install/boot/
+        cp -r ${{github.workspace}}/build/arch/arm64/boot/dts/overlays/*.dtb* ${{github.workspace}}/install/boot/
+        cp ${{github.workspace}}/build/arch/arm64/boot/Image.gz ${{github.workspace}}/install/boot/
+
+    - name: Tar build
+      run: tar -cvf arm64_build.tar -C ${{github.workspace}}/install .
+
+    - name: Upload results
+      uses: actions/upload-artifact@v3
+      with:
+        name: arm64_build
+        path: arm64_build.tar
+        retention-days: 7
+
+  build-bcmrpi:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Update install
+      run:
+        sudo apt-get update
+
+    - name: Install toolchain
+      run:
+        sudo apt-get install gcc-arm-linux-gnueabihf
+      timeout-minutes: 5
+
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+        clean: true
+
+    - name: Build kernel
+      run: |
+        mkdir ${{github.workspace}}/build
+        make ARCH=arm KERNEL=kernel CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build bcm2711_defconfig
+        make ARCH=arm KERNEL=kernel CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build -j ${{env.NUM_JOBS}} zImage modules dtbs
+        mkdir -p ${{github.workspace}}/install/boot
+        make ARCH=arm KERNEL=kernel CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build INSTALL_MOD_PATH=${{github.workspace}}/install modules_install
+        cp ${{github.workspace}}/build/arch/arm/boot/dts/*.dtb ${{github.workspace}}/install/boot/
+        cp -r ${{github.workspace}}/build/arch/arm/boot/dts/overlays/*.dtb* ${{github.workspace}}/install/boot/
+        cp ${{github.workspace}}/build/arch/arm/boot/zImage ${{github.workspace}}/install/boot/
+
+    - name: Tar build
+      run: tar -cvf bcmrpi_build.tar -C ${{github.workspace}}/install .
+
+    - name: Upload results
+      uses: actions/upload-artifact@v3
+      with:
+        name: bcmrpi_build
+        path: bcmrpi_build.tar
+        retention-days: 7
+
+  build-bcm2709:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Update install
+      run:
+        sudo apt-get update
+
+    - name: Install toolchain
+      run:
+        sudo apt-get install gcc-arm-linux-gnueabihf
+      timeout-minutes: 5
+
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+        clean: true
+
+    - name: Build kernel
+      run: |
+        mkdir ${{github.workspace}}/build
+        make ARCH=arm KERNEL=kernel7 CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build bcm2709_defconfig
+        make ARCH=arm KERNEL=kernel7 CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build -j ${{env.NUM_JOBS}} zImage modules dtbs
+        mkdir -p ${{github.workspace}}/install/boot
+        make ARCH=arm KERNEL=kernel7 CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build INSTALL_MOD_PATH=${{github.workspace}}/install modules_install
+        cp ${{github.workspace}}/build/arch/arm/boot/dts/*.dtb ${{github.workspace}}/install/boot/
+        cp -r ${{github.workspace}}/build/arch/arm/boot/dts/overlays/*.dtb* ${{github.workspace}}/install/boot/
+        cp ${{github.workspace}}/build/arch/arm/boot/zImage ${{github.workspace}}/install/boot/
+
+    - name: Tar build
+      run: tar -cvf bcm2709_build.tar -C ${{github.workspace}}/install .
+
+    - name: Upload results
+      uses: actions/upload-artifact@v3
+      with:
+        name: bcm2709_build
+        path: bcm2709_build.tar
+        retention-days: 7
+
+  build-bcm2711:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Update install
+      run:
+        sudo apt-get update
+
+    - name: Install toolchain
+      run:
+        sudo apt-get install gcc-arm-linux-gnueabihf
+      timeout-minutes: 5
+
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+        clean: true
+
+    - name: Build kernel
+      run: |
+        mkdir ${{github.workspace}}/build
+        make ARCH=arm KERNEL=kernel7l CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build bcm2711_defconfig
+        make ARCH=arm KERNEL=kernel7l CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build -j ${{env.NUM_JOBS}} zImage modules dtbs
+        mkdir -p ${{github.workspace}}/install/boot
+        make ARCH=arm KERNEL=kernel7l CROSS_COMPILE=arm-linux-gnueabihf- O=${{github.workspace}}/build INSTALL_MOD_PATH=${{github.workspace}}/install modules_install
+        cp ${{github.workspace}}/build/arch/arm/boot/dts/*.dtb ${{github.workspace}}/install/boot/
+        cp -r ${{github.workspace}}/build/arch/arm/boot/dts/overlays/*.dtb* ${{github.workspace}}/install/boot/
+        cp ${{github.workspace}}/build/arch/arm/boot/zImage ${{github.workspace}}/install/boot/
+
+    - name: Tar build
+      run: tar -cvf bcm2711_build.tar -C ${{github.workspace}}/install .
+
+    - name: Upload results
+      uses: actions/upload-artifact@v3
+      with:
+        name: bcm2711_build
+        path: bcm2711_build.tar
+        retention-days: 7
+
+  build-bcm2711-arm64:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Update install
+      run:
+        sudo apt-get update
+
+    - name: Install toolchain
+      run:
+        sudo apt-get install gcc-arm-linux-gnueabihf
+      timeout-minutes: 5
+
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+        clean: true
+
+    - name: Install toolchain
+      run:
+        sudo apt-get install gcc-aarch64-linux-gnu
+      timeout-minutes: 5
+
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+        clean: true
+
+    - name: Build kernel
+      run: |
+        mkdir ${{github.workspace}}/build
+        make ARCH=arm64 KERNEL=kernel8 CROSS_COMPILE=aarch64-linux-gnu- O=${{github.workspace}}/build bcm2711_defconfig
+        make ARCH=arm64 KERNEL=kernel8 CROSS_COMPILE=aarch64-linux-gnu- O=${{github.workspace}}/build -j ${{env.NUM_JOBS}} Image.gz modules dtbs
+        mkdir -p ${{github.workspace}}/install/boot
+        make ARCH=arm64 KERNEL=kernel8 CROSS_COMPILE=aarch64-linux-gnu- O=${{github.workspace}}/build INSTALL_MOD_PATH=${{github.workspace}}/install modules_install
+        cp ${{github.workspace}}/build/arch/arm64/boot/dts/broadcom/*.dtb ${{github.workspace}}/install/boot/
+        cp -r ${{github.workspace}}/build/arch/arm64/boot/dts/overlays/*.dtb* ${{github.workspace}}/install/boot/
+        cp ${{github.workspace}}/build/arch/arm64/boot/Image.gz ${{github.workspace}}/install/boot/
+
+    - name: Tar build
+      run: tar -cvf bcm2711_arm64_build.tar -C ${{github.workspace}}/install .
+
+    - name: Upload results
+      uses: actions/upload-artifact@v3
+      with:
+        name: bcm2711_arm64_build
+        path: bcm2711_arm64_build.tar
+        retention-days: 7