ARG TAG=dev
ARG DOCKER_IMAGE_ROOT=monok8s
FROM --platform=linux/amd64 ${DOCKER_IMAGE_ROOT}/build-base:${TAG}

ARG NXP_VERSION
ARG ARCH
ARG CROSS_COMPILE
ARG DEVICE_TREE_TARGET

WORKDIR /build

RUN test -n "${NXP_VERSION}" || (echo "Please specify NXP_VERSION" >&2; exit 1); \
    test -n "${ARCH}" || (echo "Please specify ARCH" >&2; exit 1); \
    test -n "${CROSS_COMPILE}" || (echo "Please specify CROSS_COMPILE" >&2; exit 1); \
    test -n "${DEVICE_TREE_TARGET}" || (echo "Please specify DEVICE_TREE_TARGET" >&2; exit 1)

COPY packages/${NXP_VERSION}.tar.gz ./
RUN tar -xf ${NXP_VERSION}.tar.gz \
 && mv "linux-${NXP_VERSION}" nxplinux \
 && rm -f ${NXP_VERSION}.tar.gz

WORKDIR /build/nxplinux

COPY kernel-extra.config /tmp/kernel-extra.config
COPY kernel-build/dts/*.dts ./arch/arm64/boot/dts/freescale/

RUN grep -q "^dtb-\\\$(CONFIG_ARCH_LAYERSCAPE) += ${DEVICE_TREE_TARGET}.dtb$" \
      arch/arm64/boot/dts/freescale/Makefile \
 || echo "dtb-\$(CONFIG_ARCH_LAYERSCAPE) += ${DEVICE_TREE_TARGET}.dtb" \
      >> arch/arm64/boot/dts/freescale/Makefile

# NXP tree: use the LSDK defconfig target
RUN make ARCH="${ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" defconfig lsdk.config \
 && ./scripts/kconfig/merge_config.sh -m .config /tmp/kernel-extra.config \
 && make ARCH="${ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" olddefconfig \
 && make ARCH="${ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" -j"$(nproc)"

# artifact collection
RUN mkdir -p /out/kernel /out/rootfs \
 && cp -av arch/arm64/boot/Image* /out/kernel/ 2>/dev/null || true \
 && cp -av arch/arm64/boot/dts /out/kernel/dts 2>/dev/null || true \
 && cp -av System.map .config /out/kernel/ \
 && make ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE} modules_install INSTALL_MOD_PATH=/out/rootfs

RUN depmod -b /out/rootfs $(ls /out/rootfs/lib/modules/)

RUN find /out/kernel -name "${DEVICE_TREE_TARGET}.dtb" -exec cp {} /out/ \;
RUN test -f "/out/${DEVICE_TREE_TARGET}.dtb"