Add support for ChromeOS ARM64 ARCVM (#1642)

1. Add support for ChromeOS ARM64 ARCVM.
2. Optimization of intermediate variable naming.
3. Optimization of kernel version acquisition logic for file names,
obtaining the kernel version directly from Makefile.

.github/workflows/build-kernel-arcvm.yml

@@ -13,17 +13,23 @@ on:
   workflow_call:
   workflow_dispatch:
 
+env:
+  git_tag: chromeos-5.10-arcvm
+
 jobs:
   build:
     if: github.event_name != 'pull_request' || (github.event_name == 'pull_request' && !github.event.pull_request.draft)
     strategy:
       matrix:
-        arch: [x86_64]
-        version: ["5.10.213"]
         include:
           - arch: x86_64
-            git_tag: chromeos-5.10-arcvm
+            kernel_image_name: bzImage
-            file_name: "bzImage"
+            build_config: build.config.gki.x86_64
+            defconfig: x86_64_arcvm_defconfig
+          - arch: arm64
+            kernel_image_name: Image
+            build_config: build.config.gki.aarch64
+            defconfig: arm64_arcvm_defconfig
 
     name: Build ChromeOS ARCVM kernel
     runs-on: ubuntu-20.04
@@ -66,7 +72,16 @@ jobs:
           fetch-depth: 0
 
       - name: Setup kernel source
-        run: git clone https://chromium.googlesource.com/chromiumos/third_party/kernel.git -b ${{ matrix.git_tag }} --depth=1
+        run: git clone https://chromium.googlesource.com/chromiumos/third_party/kernel.git -b ${{ env.git_tag }} --depth=1
+
+      - name: Extract version from Makefile
+        working-directory: kernel
+        run: |
+          VERSION=$(grep -E '^VERSION = ' Makefile | awk '{print $3}')
+          PATCHLEVEL=$(grep -E '^PATCHLEVEL = ' Makefile | awk '{print $3}')
+          SUBLEVEL=$(grep -E '^SUBLEVEL = ' Makefile | awk '{print $3}')
+          echo "ChromeOS ARCVM Linux kernel version: $VERSION.$PATCHLEVEL.$SUBLEVEL"
+          echo "version=$VERSION.$PATCHLEVEL.$SUBLEVEL" >> $GITHUB_ENV
           
       - name: Setup KernelSU
         working-directory: kernel
@@ -89,15 +104,18 @@ jobs:
 
           echo "[+] KernelSU setup done."
           cd $GITHUB_WORKSPACE/KernelSU
-          VERSION=$(($(git rev-list --count HEAD) + 10200))
+          KSU_VERSION=$(($(git rev-list --count HEAD) + 10200))
-          echo "VERSION: $VERSION"
+          echo "KernelSU version: $KSU_VERSION"
-          echo "kernelsu_version=$VERSION" >> $GITHUB_ENV
+          echo "kernelsu_version=$KSU_VERSION" >> $GITHUB_ENV
 
       - name: Build Kernel
         working-directory: kernel
+        env:
+          KERNEL_IMAGE_NAME: ${{ matrix.kernel_image_name }}
+          ARCH: ${{ matrix.arch }}
         run: |
-          set -a && . build.config.gki.x86_64; set +a
+          set -a && . ${{ matrix.build_config }}; set +a
-          export DEFCONFIG=x86_64_arcvm_defconfig
+          export DEFCONFIG=${{ matrix.defconfig }}
           if [ ! -z ${{ vars.EXPECTED_SIZE }} ] && [ ! -z ${{ vars.EXPECTED_HASH }} ]; then
             export KSU_EXPECTED_SIZE=${{ vars.EXPECTED_SIZE }}
             export KSU_EXPECTED_HASH=${{ vars.EXPECTED_HASH }}
@@ -106,12 +124,12 @@ jobs:
           make LLVM=1 LLVM_IAS=1 DEPMOD=depmod DTC=dtc O=${PWD} mrproper
           make LLVM=1 LLVM_IAS=1 DEPMOD=depmod DTC=dtc O=${PWD} ${DEFCONFIG} < /dev/null
           scripts/config --file .config -e LTO_CLANG -d LTO_NONE -e LTO_CLANG_THIN -d LTO_CLANG_FULL -e THINLTO
-          make LLVM=1 LLVM_IAS=1 DEPMOD=depmod DTC=dtc O=${PWD} -j$(nproc) bzImage modules prepare-objtool
+          make LLVM=1 LLVM_IAS=1 DEPMOD=depmod DTC=dtc O=${PWD} -j$(nproc) ${KERNEL_IMAGE_NAME} modules prepare-objtool
+          ls -l -h ${PWD}/arch/${ARCH}/boot
+          echo "file_path=${PWD}/arch/${ARCH}/boot/${KERNEL_IMAGE_NAME}" >> $GITHUB_ENV
 
-          echo "file_path=${PWD}/arch/x86/boot/bzImage" >> $GITHUB_ENV
+      - name: Upload kernel-ARCVM-${{ matrix.arch }}-${{ env.version }}
-
-      - name: Upload kernel-ARCVM-${{ matrix.arch }}-${{ matrix.version }}
         uses: actions/upload-artifact@v4
         with:
-          name: kernel-ARCVM-${{ matrix.arch }}-${{ matrix.version }}
+          name: kernel-ARCVM-${{ matrix.arch }}-${{ env.version }}
           path: "${{ env.file_path }}"