Add GitHub CI

Author: user890104

.github/workflows/build.yml

@@ -10,26 +10,22 @@ jobs:
     outputs:
       artifact-path: freemyipod/initramfs.cpio.gz
     steps:
-      - name: Checkout source
-        uses: actions/checkout@v6
-
-      - name: Install system dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y \
-            qemu-user-static \
-            systemd-container
-
-      - name: Cache initramfs
+      - name: Restore initramfs from cache
         id: cache
         uses: actions/cache@v5
         with:
           path: freemyipod/initramfs.cpio.gz
           key: initramfs-${{ hashFiles('freemyipod/build-initramfs.sh') }}
 
+      - name: Checkout source if cache miss
+        if: steps.cache.outputs.cache-hit != 'true'
+        uses: actions/checkout@v6
+
       - name: Build initramfs if cache miss
         if: steps.cache.outputs.cache-hit != 'true'
         run: |
+          sudo apt-get update
+          sudo apt-get install -y qemu-user-static systemd-container
           chmod +x freemyipod/build-initramfs.sh
           freemyipod/build-initramfs.sh
           echo "Initramfs built successfully at freemyipod/initramfs.cpio.gz"
@@ -62,20 +58,39 @@ jobs:
             libncurses-dev \
             device-tree-compiler \
             python3 \
-            python3-pip
+            python3-pip \
+            ccache
 
       - name: Install Python dependencies for dtbs_check
         run: |
           pip3 install --upgrade pip
           pip3 install dtschema yamllint
 
+      - name: Restore global ccache
+        uses: actions/cache@v5
+        with:
+          path: ~/.ccache
+          key: ccache-global
+          restore-keys: ccache-global
+
+      - name: Setup ccache
+        run: |
+          export PATH="/usr/lib/ccache:$PATH"
+          ccache --zero-stats
+          ccache --max-size=256M
+          echo "CCACHE_DIR=$HOME/.ccache" >> $GITHUB_ENV
+
       - name: Configure kernel
         run: |
           make ARCH=arm apple_n31_defconfig
 
       - name: Build kernel
         run: |
+          export PATH="/usr/lib/ccache:$PATH"
+          export CC="ccache arm-none-eabi-gcc"
+          export HOSTCC="ccache gcc"
           make ARCH=arm CROSS_COMPILE=arm-none-eabi- -j $(nproc) dtbs_check dtbs zImage
+          ccache --show-stats
 
       - name: Copy kernel and DTB to /freemyipod
         run: |
@@ -100,13 +115,13 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Download initramfs artifact
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v8
         with:
           name: initramfs
           path: freemyipod
 
       - name: Download kernel artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v8
         with:
           name: kernel
           path: freemyipod

freemyipod/build-initramfs.sh

@@ -10,7 +10,7 @@ URL=https://dl-cdn.alpinelinux.org/alpine/${MAJOR}/releases/${ARCH}/${TAR}
 
 wget -c $URL
 WORK_DIR=$(mktemp -d)
-trap 'rm -rf "$WORK_DIR"' EXIT
+trap 'sudo rm -rf "$WORK_DIR"' EXIT
 tar xf ${TAR} -C $WORK_DIR
 
 # create minimal /init for initramfs
@@ -65,9 +65,6 @@ do dropbearkey -t \$algo -f /etc/dropbear/dropbear_\${algo}_host_key; done
 
 # set root password
 echo -ne 'alpine\nalpine\n' | passwd root
-
-# mount sysfs
-mount -t sysfs sysfs /sys
 "
 
 rm -rf "$WORK_DIR/qemu-arm-static"
@@ -77,4 +74,4 @@ rm -rf "$WORK_DIR/qemu-arm-static"
   find $WORK_DIR -printf "%P\0" |
   sudo cpio --directory=$WORK_DIR --null --create --verbose --owner root:root --format=newc |
   gzip -9
-) > initramfs.cpio.gz
+) > freemyipod/initramfs.cpio.gz

freemyipod/kernel_fdt.its

@@ -39,7 +39,6 @@
             type = "ramdisk";
             arch = "arm";
             os = "linux";
-            compression = "gzip";
             hash {
                 algo = "crc32";
             };