Add non-Chrome SDK Ubuntu build Github actions file

Author: TapFW

.github/workflows/zephyr-build-standalone.yml

@@ -0,0 +1,141 @@
+name: Build EC firmware (standalone)
+
+on:
+  push:
+    branches:
+      - sunflower*
+      - marigold*
+      - lotus*
+      - azalea*
+      - fwk*
+      - pr-*
+      - framework*
+  workflow_dispatch:
+
+env:
+  ZEPHYR_SDK_VERSION: "0.17.0"
+  # CrOS Zephyr commit known to work with this EC (Zephyr 3.7.0-rc2)
+  CROS_ZEPHYR_REF: "769e32e27318e91e90cc91496552ca4154a07ccc"
+
+jobs:
+  build:
+    runs-on: ubuntu-24.04
+
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - { name: sunflower, ver: "3.0.6" }
+          - { name: marigold, ver: "0.0.0" }
+          - { name: lotus, ver: "0.0.0" }
+          - { name: azalea, ver: "0.0.0" }
+
+    steps:
+      - name: Checkout EC source
+        uses: actions/checkout@v4
+
+      - name: Install build dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends \
+            cmake ninja-build gcc-multilib g++-multilib \
+            python3-pip python3-setuptools python3-pyelftools \
+            python3-pykwalify python3-colorama python3-testfixtures \
+            device-tree-compiler flex bison swig
+
+      - name: Cache Zephyr SDK
+        uses: actions/cache@v4
+        id: cache-sdk
+        with:
+          path: ~/zephyr-sdk-${{ env.ZEPHYR_SDK_VERSION }}
+          key: zephyr-sdk-${{ env.ZEPHYR_SDK_VERSION }}-arm
+
+      - name: Install Zephyr SDK
+        if: steps.cache-sdk.outputs.cache-hit != 'true'
+        run: |
+          cd ~
+          wget -q https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v${ZEPHYR_SDK_VERSION}/zephyr-sdk-${ZEPHYR_SDK_VERSION}_linux-x86_64_minimal.tar.xz
+          tar xf zephyr-sdk-${ZEPHYR_SDK_VERSION}_linux-x86_64_minimal.tar.xz
+          cd zephyr-sdk-${ZEPHYR_SDK_VERSION}
+          # Only install the ARM toolchain needed for NPCX
+          wget -q https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v${ZEPHYR_SDK_VERSION}/toolchain_linux-x86_64_arm-zephyr-eabi.tar.xz
+          tar xf toolchain_linux-x86_64_arm-zephyr-eabi.tar.xz
+          rm toolchain_linux-x86_64_arm-zephyr-eabi.tar.xz
+
+      - name: Clone CrOS Zephyr
+        run: |
+          git clone --depth 500 \
+            https://chromium.googlesource.com/chromiumos/third_party/zephyr \
+            ~/cros-zephyr
+          cd ~/cros-zephyr
+          git checkout ${{ env.CROS_ZEPHYR_REF }}
+
+      - name: Clone CrOS CMSIS module
+        run: |
+          git clone --depth 1 -b chromeos-main \
+            https://chromium.googlesource.com/chromiumos/third_party/zephyr/cmsis \
+            ~/modules/cmsis
+
+      - name: Set up modules directory
+        run: ln -s $GITHUB_WORKSPACE ~/modules/ec
+
+      - name: Patch Zephyr for out-of-tree build
+        run: |
+          cd ~/cros-zephyr
+
+          # 1. Don't treat Kconfig warnings as errors
+          #    (undefined ESPI_PERIPHERAL_ACPI_SHM_REGION_WRITE_PROTECT_ENABLE
+          #     and choice symbol select warnings)
+          sed -i 's/error_out = True/error_out = False/' \
+            scripts/kconfig/kconfig.py
+
+          # 2. Add E8042_CLEAR_IBF opcode (Framework custom addition)
+          sed -i '/E8042_CLEAR_OBF,/a\\tE8042_CLEAR_IBF,' \
+            include/zephyr/drivers/espi.h
+
+          # 3. Add E8042_CLEAR_IBF handler in NPCX eSPI driver
+          sed -i '/case E8042_READ_KB_STS:/i\\t\tcase E8042_CLEAR_IBF:\n\t\t\t/* Clear IBF by reading the data register */\n\t\t\t*data = inst_kbc->HIKMDI;\n\t\t\tbreak;' \
+            drivers/espi/host_subs_npcx.c
+
+      - name: Patch EC for Zephyr compatibility
+        run: |
+          # 1. Guard IS_BIT_SET macro (conflicts with Zephyr's definition)
+          sed -i 's/^#define IS_BIT_SET(reg, bit)/#ifndef IS_BIT_SET\n#define IS_BIT_SET(reg, bit)/' \
+            zephyr/shim/chip/npcx/npcx_monitor/registers.h
+          sed -i '/^#define IS_BIT_SET/,/^#define/{/^#define IS_BIT_SET/a\#endif
+          }' zephyr/shim/chip/npcx/npcx_monitor/registers.h
+
+          # 2. Remove extra U suffix from CONFIG_PROGRAM_MEMORY_BASE
+          #    (DT_REG_ADDR already returns UINT32_C())
+          sed -i 's/_CONCAT(DT_REG_ADDR(DT_CHOSEN(zephyr_flash)), U)/DT_REG_ADDR(DT_CHOSEN(zephyr_flash))/' \
+            zephyr/shim/include/config_chip.h
+
+      - name: Install zmake
+        run: pip install --break-system-packages -e zephyr/zmake
+
+      - name: Build ${{ matrix.platform.name }}
+        run: |
+          ZEPHYR_SDK_INSTALL_DIR=~/zephyr-sdk-${ZEPHYR_SDK_VERSION} \
+          zmake \
+            --modules-dir ~/modules \
+            --zephyr-base ~/cros-zephyr \
+            build -v ${{ matrix.platform.ver }} \
+            ${{ matrix.platform.name }}
+
+      - name: Show build info
+        run: |
+          echo "=== Binary size ==="
+          ls -la build/zephyr/${{ matrix.platform.name }}/output/ec.bin
+          echo "=== SHA256 ==="
+          sha256sum build/zephyr/${{ matrix.platform.name }}/output/ec.bin
+          echo "=== Version string ==="
+          strings build/zephyr/${{ matrix.platform.name }}/output/ec.bin | grep ${{ matrix.platform.name }} || true
+          echo "=== Git SHA ==="
+          SHA_SHORT=$(echo "$GITHUB_SHA" | cut -c1-7)
+          strings build/zephyr/${{ matrix.platform.name }}/output/ec.bin | grep "$SHA_SHORT" || echo "SHA not found in binary"
+
+      - name: Upload firmware artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.platform.name }}-ec-${{ github.sha }}
+          path: build/zephyr/${{ matrix.platform.name }}/output/