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feat: add KernelSU build workflow for Samsung A04
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‎.github/workflows/build-kernel.yml‎

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name: Build Kernel with KernelSU (Samsung A04)
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on:
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workflow_dispatch:
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inputs:
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kernel_source:
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description: 'Kernel source URL'
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required: true
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default: 'https://github.com/rsuntkOrgs/kernel_samsung_wingtech'
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kernel_branch:
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description: 'Kernel branch'
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required: true
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default: 'a045x'
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kernelsu_tag:
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description: 'KernelSU tag or "main" for latest'
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required: false
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default: 'main'
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create_release:
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description: 'Create GitHub Release'
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required: false
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default: false
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type: boolean
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push:
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branches: [main]
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paths:
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- '.github/workflows/build-kernel.yml'
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jobs:
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build:
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runs-on: ubuntu-latest
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permissions:
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contents: write
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steps:
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- name: Checkout build repo
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uses: actions/checkout@v4
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- name: Set up swap space
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uses: pierotofy/set-swap-space@master
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with:
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swap-size-gb: 12
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- name: Install build dependencies
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run: |
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sudo apt-get update -qq
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sudo apt-get install -y --no-install-recommends \
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bc bison build-essential ca-certificates cpio flex \
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git kmod libelf-dev libssl-dev lz4 python3 \
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zip wget curl sed binutils-aarch64-linux-gnu \
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crossbuild-essential-arm64 clang lld llvm
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- name: Clone kernel source
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run: |
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echo "Cloning ${{ github.event.inputs.kernel_source }} @ ${{ github.event.inputs.kernel_branch }}"
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git clone --depth=1 \
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-b ${{ github.event.inputs.kernel_branch }} \
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${{ github.event.inputs.kernel_source }} \
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android-kernel
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- name: Fetch KernelSU version info
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id: ksu_info
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run: |
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TAG=${{ github.event.inputs.kernelsu_tag }}
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if [ "$TAG" = "main" ] || [ -z "$TAG" ]; then
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LATEST=$(curl -s https://api.github.com/repos/tiann/KernelSU/releases/latest | grep '"tag_name"' | cut -d'"' -f4)
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echo "KernelSU latest release: $LATEST"
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echo "ksu_version=$LATEST" >> $GITHUB_OUTPUT
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else
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echo "ksu_version=$TAG" >> $GITHUB_OUTPUT
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fi
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- name: Integrate KernelSU via setup.sh
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run: |
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cd android-kernel
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KSU_TAG=${{ steps.ksu_info.outputs.ksu_version }}
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echo "Integrating KernelSU $KSU_TAG ..."
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curl -LSs "https://raw.githubusercontent.com/tiann/KernelSU/main/kernel/setup.sh" | bash -s "$KSU_TAG"
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# Verify
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echo "KernelSU integrated:"
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head -5 KernelSU/kernel/Makefile || head -5 drivers/kernelsu/Makefile
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- name: Setup Clang toolchain
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run: |
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mkdir -p $HOME/toolchain/clang
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# Use a stable Clang from ZyCromerZ (proven for MT6765 / 4.19)
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wget -q --show-progress \
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https://github.com/ZyCromerZ/Clang/releases/download/14.0.6-20220902-full/Clang-14.0.6-x86_64.tar.gz \
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-O /tmp/clang.tar.gz || {
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echo "ZyCromerZ Clang download failed, falling back to system clang"
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mkdir -p $HOME/toolchain/clang/bin
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ln -sf /usr/bin/clang $HOME/toolchain/clang/bin/clang
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ln -sf /usr/bin/ld.lld $HOME/toolchain/clang/bin/ld.lld
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for t in /usr/bin/llvm-*; do [ -f "$t" ] && ln -sf "$t" $HOME/toolchain/clang/bin/; done
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exit 0
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}
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tar -xzf /tmp/clang.tar.gz -C $HOME/toolchain/clang/
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rm /tmp/clang.tar.gz
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echo "$HOME/toolchain/clang/bin" >> $GITHUB_PATH
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- name: Apply GPU driver fix (MT6765)
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run: |
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cd android-kernel
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TARGET=$(find drivers/gpu -name "mtk_mfgsys.c" 2>/dev/null | head -n 1)
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if [ -n "$TARGET" ]; then
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echo "Applying GPU fix to $TARGET"
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sed -i 's/PVRSRVGetDevicePowerState(ui32RGXDevIdx,/PVRSRVGetDevicePowerState(MTKGetRGXDevNode(),/g' "$TARGET"
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sed -i 's/MTKWriteBackFreqToRGX(ui32RGXDevIdx,/MTKWriteBackFreqToRGX(MTKGetRGXDevNode(),/g' "$TARGET"
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sed -i 's/PVRSRVDevicePostClockSpeedChange(ui32RGXDevIdx,/PVRSRVDevicePostClockSpeedChange(MTKGetRGXDevNode(),/g' "$TARGET"
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sed -i 's/PVRSRVDevicePreClockSpeedChange(ui32RGXDevIdx,/PVRSRVDevicePreClockSpeedChange(MTKGetRGXDevNode(),/g' "$TARGET"
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echo "GPU fix applied."
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else
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echo "mtk_mfgsys.c not found, skipping GPU fix."
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fi
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- name: Configure kernel
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run: |
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cd android-kernel
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export PATH=$HOME/toolchain/clang/bin:$PATH
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# Find defconfig
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DEFCONFIG=$(find arch/arm64/configs -name "a04*defconfig" -o -name "*a045*" 2>/dev/null | head -1 | xargs basename)
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if [ -z "$DEFCONFIG" ]; then
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DEFCONFIG="a04_defconfig"
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fi
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echo "Using defconfig: $DEFCONFIG"
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make O=out ARCH=arm64 $DEFCONFIG
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# Disable Werror to avoid upstream warnings killing the build
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sed -i 's/CONFIG_WERROR=y/CONFIG_WERROR=n/g' out/.config
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# KernelSU — enable + keep KPROBES on for 4.19 non-GKI hook method
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scripts/config --file out/.config \
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-e CONFIG_KSU \
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-e CONFIG_KPROBES \
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-e CONFIG_HAVE_KPROBES \
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-e CONFIG_OVERLAY_FS \
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-e CONFIG_BUILD_ARM64_APPENDED_DTB_IMAGE
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# Build identity
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scripts/config --file out/.config \
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--set-str CONFIG_LOCALVERSION "-KSU-${{ steps.ksu_info.outputs.ksu_version }}" \
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--disable CONFIG_LOCALVERSION_AUTO
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# Strip debug info to shrink image size
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scripts/config --file out/.config \
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--disable CONFIG_DEBUG_INFO \
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--disable CONFIG_DEBUG_INFO_SPLIT \
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--disable CONFIG_DEBUG_INFO_REDUCED \
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--disable CONFIG_DEBUG_INFO_DWARF4 \
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--disable CONFIG_FTRACE \
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--disable CONFIG_PROFILING \
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--enable CONFIG_STRIP_ASM_SYMS \
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--enable CONFIG_CC_OPTIMIZE_FOR_SIZE
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echo "Configuration done."
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- name: Compile kernel
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run: |
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cd android-kernel
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export PATH=$HOME/toolchain/clang/bin:$PATH
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make -j$(nproc --all) O=out ARCH=arm64 \
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CC=clang \
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LD=ld.lld \
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AR=llvm-ar \
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NM=llvm-nm \
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OBJCOPY=llvm-objcopy \
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STRIP=llvm-strip \
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LLVM=1 LLVM_IAS=1 \
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CLANG_TRIPLE=aarch64-linux-gnu- \
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CROSS_COMPILE=aarch64-linux-gnu- \
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CROSS_COMPILE_ARM32=arm-linux-gnueabi- \
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KCFLAGS="-w" \
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Image 2>&1 | tee $GITHUB_WORKSPACE/compile.log
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if [ ! -f out/arch/arm64/boot/Image ]; then
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echo "::error::Kernel Image not found after build!"
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exit 1
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fi
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SIZE=$(du -h out/arch/arm64/boot/Image | cut -f1)
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echo "Kernel Image size: $SIZE"
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- name: Package with AnyKernel3
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run: |
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git clone --depth=1 https://github.com/osm0sis/AnyKernel3 AnyKernel3
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cd AnyKernel3
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rm -rf .git .github *.md
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cp $GITHUB_WORKSPACE/android-kernel/out/arch/arm64/boot/Image ./
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cat > anykernel.sh << 'AKEOF'
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properties() {
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kernel.string=Samsung A04 + KernelSU
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do.devicecheck=1
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do.modules=0
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do.cleanup=1
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do.cleanuponabort=1
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device.name1=a04
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device.name2=a045f
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device.name3=SM-A045F
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device.name4=a045x
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supported.versions=12-14
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}
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block=auto
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is_slot_device=0
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. tools/ak3-core.sh
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split_boot
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flash_boot
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AKEOF
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BUILD_DATE=$(date +%Y%m%d-%H%M)
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KSU_VER=${{ steps.ksu_info.outputs.ksu_version }}
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ZIP_NAME="SamsungA04-KernelSU-${KSU_VER}-${BUILD_DATE}.zip"
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zip -r9 $GITHUB_WORKSPACE/$ZIP_NAME . -x '.git*'
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echo "ZIP_NAME=$ZIP_NAME" >> $GITHUB_ENV
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echo "Packaged: $ZIP_NAME ($(du -h $GITHUB_WORKSPACE/$ZIP_NAME | cut -f1))"
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- name: Upload artifact
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uses: actions/upload-artifact@v4
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with:
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name: ${{ env.ZIP_NAME }}
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path: ${{ env.ZIP_NAME }}
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retention-days: 14
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- name: Upload compile log on failure
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if: failure()
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uses: actions/upload-artifact@v4
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with:
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name: compile-log-${{ github.run_number }}
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path: compile.log
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- name: Create GitHub Release
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if: github.event.inputs.create_release == 'true'
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uses: softprops/action-gh-release@v2
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with:
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tag_name: ksu-${{ steps.ksu_info.outputs.ksu_version }}-build${{ github.run_number }}
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name: "KernelSU ${{ steps.ksu_info.outputs.ksu_version }} — Samsung A04"
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body: |
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## Samsung A04 (SM-A045F) Kernel + KernelSU
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| | |
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|---|---|
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| **KernelSU version** | `${{ steps.ksu_info.outputs.ksu_version }}` |
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| **Kernel source** | `${{ github.event.inputs.kernel_source }}` |
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| **Branch** | `${{ github.event.inputs.kernel_branch }}` |
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| **Build number** | `#${{ github.run_number }}` |
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### Flash instructions
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1. Boot into TWRP / OrangeFox recovery
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2. Flash the ZIP
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3. Install **KernelSU Manager APK** from the [KernelSU releases page](https://github.com/tiann/KernelSU/releases)
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> Built automatically via GitHub Actions
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files: ${{ env.ZIP_NAME }}
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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