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# Support for device tree generation
PACKAGES_append = " \
${KERNEL_PACKAGE_NAME}-devicetree \
${@[d.getVar('KERNEL_PACKAGE_NAME') + '-image-zimage-bundle', ''][d.getVar('KERNEL_DEVICETREE_BUNDLE') != '1']} \
"
FILES_${KERNEL_PACKAGE_NAME}-devicetree = "/${KERNEL_IMAGEDEST}/*.dtb /${KERNEL_IMAGEDEST}/*.dtbo"
FILES_${KERNEL_PACKAGE_NAME}-image-zimage-bundle = "/${KERNEL_IMAGEDEST}/zImage-*.dtb.bin"
# Generate kernel+devicetree bundle
KERNEL_DEVICETREE_BUNDLE ?= "0"
normalize_dtb () {
DTB="$1"
if echo ${DTB} | grep -q '/dts/'; then
bbwarn "${DTB} contains the full path to the the dts file, but only the dtb name should be used."
DTB=`basename ${DTB} | sed 's,\.dts$,.dtb,g'`
fi
echo "${DTB}"
}
get_real_dtb_path_in_kernel () {
DTB="$1"
DTB_PATH="${B}/arch/${ARCH}/boot/dts/${DTB}"
if [ ! -e "${DTB_PATH}" ]; then
DTB_PATH="${B}/arch/${ARCH}/boot/${DTB}"
fi
echo "${DTB_PATH}"
}
do_configure_append() {
if [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then
if echo ${KERNEL_IMAGETYPE_FOR_MAKE} | grep -q 'zImage'; then
case "${ARCH}" in
"arm")
config="${B}/.config"
if ! grep -q 'CONFIG_ARM_APPENDED_DTB=y' $config; then
bbwarn 'CONFIG_ARM_APPENDED_DTB is NOT enabled in the kernel. Enabling it to allow the kernel to boot with the Device Tree appended!'
sed -i "/CONFIG_ARM_APPENDED_DTB[ =]/d" $config
echo "CONFIG_ARM_APPENDED_DTB=y" >> $config
echo "# CONFIG_ARM_ATAG_DTB_COMPAT is not set" >> $config
fi
;;
*)
bberror "KERNEL_DEVICETREE_BUNDLE is not supported for ${ARCH}. Currently it is only supported for 'ARM'."
esac
else
bberror 'The KERNEL_DEVICETREE_BUNDLE requires the KERNEL_IMAGETYPE to contain zImage.'
fi
fi
}
do_compile_append() {
for DTB in ${KERNEL_DEVICETREE}; do
DTB=`normalize_dtb "${DTB}"`
oe_runmake ${DTB}
done
}
do_install_append() {
for DTB in ${KERNEL_DEVICETREE}; do
DTB=`normalize_dtb "${DTB}"`
DTB_EXT=${DTB##*.}
DTB_PATH=`get_real_dtb_path_in_kernel "${DTB}"`
DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"`
install -m 0644 ${DTB_PATH} ${D}/${KERNEL_IMAGEDEST}/${DTB_BASE_NAME}.${DTB_EXT}
for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do
symlink_name=${type}"-"${KERNEL_IMAGE_SYMLINK_NAME}
DTB_SYMLINK_NAME=`echo ${symlink_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"`
ln -sf ${DTB_BASE_NAME}.${DTB_EXT} ${D}/${KERNEL_IMAGEDEST}/devicetree-${DTB_SYMLINK_NAME}.${DTB_EXT}
if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then
cat ${D}/${KERNEL_IMAGEDEST}/$type \
${D}/${KERNEL_IMAGEDEST}/${DTB_BASE_NAME}.${DTB_EXT} \
> ${D}/${KERNEL_IMAGEDEST}/$type-${DTB_BASE_NAME}.${DTB_EXT}.bin
fi
done
done
}
do_deploy_append() {
for DTB in ${KERNEL_DEVICETREE}; do
DTB=`normalize_dtb "${DTB}"`
DTB_EXT=${DTB##*.}
DTB_BASE_NAME=`basename ${DTB} ."${DTB_EXT}"`
for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do
base_name=${type}"-"${KERNEL_IMAGE_BASE_NAME}
symlink_name=${type}"-"${KERNEL_IMAGE_SYMLINK_NAME}
DTB_NAME=`echo ${base_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"`
DTB_SYMLINK_NAME=`echo ${symlink_name} | sed "s/${MACHINE}/${DTB_BASE_NAME}/g"`
DTB_PATH=`get_real_dtb_path_in_kernel "${DTB}"`
install -d ${DEPLOYDIR}
install -m 0644 ${DTB_PATH} ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT}
ln -sf ${DTB_NAME}.${DTB_EXT} ${DEPLOYDIR}/${DTB_SYMLINK_NAME}.${DTB_EXT}
ln -sf ${DTB_NAME}.${DTB_EXT} ${DEPLOYDIR}/${DTB_BASE_NAME}.${DTB_EXT}
if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then
cat ${DEPLOYDIR}/$type \
${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT} \
> ${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT}.bin
ln -sf ${DTB_NAME}.${DTB_EXT}.bin ${DEPLOYDIR}/$type-${DTB_BASE_NAME}.${DTB_EXT}.bin
if [ -e "${KERNEL_OUTPUT_DIR}/${type}.initramfs" ]; then
cat ${KERNEL_OUTPUT_DIR}/${type}.initramfs \
${DEPLOYDIR}/${DTB_NAME}.${DTB_EXT} \
> ${DEPLOYDIR}/${type}-${INITRAMFS_BASE_NAME}-${DTB_BASE_NAME}.${DTB_EXT}.bin
ln -sf ${type}-${INITRAMFS_BASE_NAME}-${DTB_BASE_NAME}.${DTB_EXT}.bin \
${DEPLOYDIR}/${type}-initramfs-${DTB_BASE_NAME}.${DTB_EXT}-${MACHINE}.bin
fi
fi
done
done
}
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