add pi4 to ci build in build_aarch64

.github/workflows/build_aarch64.yml

@@ -0,0 +1,67 @@
+name: Build AArch64
+
+on:
+  pull_request:
+  push:
+  release:
+    types:
+      - created
+
+jobs:
+  # ---------------------------------------
+  # Build AARCH64 family
+  # ---------------------------------------
+  build-arm:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        family:
+        # Alphabetical order
+        - 'raspberrypi4'
+    steps:
+    - name: Setup Python
+      uses: actions/setup-python@v2
+
+    - name: Checkout TinyUSB
+      uses: actions/checkout@v2
+
+    - name: Checkout common submodules in lib
+      run: git submodule update --init lib/FreeRTOS-Kernel lib/lwip lib/sct_neopixel
+
+    - name: Checkout hathach/linkermap
+      uses: actions/checkout@v2
+      with:
+         repository: hathach/linkermap
+         path: linkermap
+
+    - name: Set Toolchain URL
+      run: echo >> $GITHUB_ENV TOOLCHAIN_URL=https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz
+
+    - name: Cache Toolchain
+      uses: actions/cache@v2
+      id: cache-toolchain
+      with:
+        path: ~/cache/
+        key: ${{ runner.os }}-21-11-02-${{ env.TOOLCHAIN_URL }}
+
+    - name: Install Toolchain
+      if: steps.cache-toolchain.outputs.cache-hit != 'true'
+      run: |
+        mkdir -p ~/cache/toolchain
+        wget --progress=dot:mega $TOOLCHAIN_URL -O toolchain.tar.gz
+        tar -C ~/cache/toolchain -xaf toolchain.tar.gz
+
+    - name: Set Toolchain Path
+      run: echo >> $GITHUB_PATH `echo ~/cache/toolchain/*/bin`
+
+    - name: Build
+      run: python3 tools/build_family.py ${{ matrix.family }}
+
+    - name: Linker Map
+      run: |
+        pip install linkermap/
+        for ex in `ls -d examples/device/*/`; do \
+          find ${ex} -name *.map -print -quit | \
+          xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'; \
+        done