Build: Add configuration for ARM64

.github/workflows/build-arm64.yml

@@ -0,0 +1,69 @@
+name: Build cr-boot for ARM64 (Google/Kukui)
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: registry.fedoraproject.org/fedora-minimal:39
+
+    steps:
+      - name: Install dependencies
+        run: |
+          dnf5 update -y
+          dnf5 install -y git make gcc gcc-aarch64-linux-gnu ccache flex bison elfutils-devel parted vboot-utils golang xz bc tar
+
+      - uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: Add Git safe directory
+        run: |
+          git config --global --add safe.directory $(pwd)
+
+      - name: Setup enviroment variables
+        run: |
+          echo "PATH=$PATH:$HOME/go/bin" >> $GITHUB_ENV
+          echo "GOCACHE=$(go env GOCACHE)" >> $GITHUB_ENV
+          echo "CCACHE_DIR=$(pwd)/ccache" >> $GITHUB_ENV
+          echo "UROOT_COMMIT=$(git rev-parse HEAD:u-root)" >> $GITHUB_ENV
+          echo "KERNEL_COMMIT=$(git rev-parse HEAD:kernel)" >> $GITHUB_ENV
+          echo "ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-" >> $GITHUB_ENV
+
+      - name: Setup Go cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.GOCACHE }}
+          key: go-${{ env.UROOT_COMMIT }}
+          restore-keys: |
+            go-
+
+      - name: Setup ccache cache
+        uses: actions/cache@v3
+        with:
+          path: ${{ env.CCACHE_DIR }}
+          key: ccache-${{ env.KERNEL_COMMIT }}-${{ hashFiles('kernel.config') }}
+          restore-keys: |
+            ccache-${{ env.KERNEL_COMMIT }}-
+            ccache-
+
+      - name: Install u-root
+        run: go install github.com/u-root/u-root@$UROOT_COMMIT
+
+      - name: Copy ARM64 kernel configuration
+        run: configs/kernel.mt8183 kernel/.config
+
+      - name: Build cr-boot
+        run: make CC="ccache gcc" -j$(nproc)
+
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: cr-boot
+          path: build