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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 dtbf in ${KERNEL_DEVICETREE}; do
dtb=`normalize_dtb "$dtbf"`
oe_runmake $dtb
done
}
do_install_append() {
for dtbf in ${KERNEL_DEVICETREE}; do
dtb=`normalize_dtb "$dtbf"`
dtb_ext=${dtb##*.}
dtb_base_name=`basename $dtb .$dtb_ext`
dtb_path=`get_real_dtb_path_in_kernel "$dtb"`
install -m 0644 $dtb_path ${D}/${KERNEL_IMAGEDEST}/$dtb_base_name.$dtb_ext
done
}
do_deploy_append() {
for dtbf in ${KERNEL_DEVICETREE}; do
dtb=`normalize_dtb "$dtbf"`
dtb_ext=${dtb##*.}
dtb_base_name=`basename $dtb .$dtb_ext`
install -d ${DEPLOYDIR}
install -m 0644 ${D}/${KERNEL_IMAGEDEST}/$dtb_base_name.$dtb_ext ${DEPLOYDIR}/$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext
ln -sf $dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext ${DEPLOYDIR}/$dtb_base_name.$dtb_ext
ln -sf $dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext ${DEPLOYDIR}/$dtb_base_name-${KERNEL_DTB_LINK_NAME}.$dtb_ext
for type in ${KERNEL_IMAGETYPE_FOR_MAKE}; do
if [ "$type" = "zImage" ] && [ "${KERNEL_DEVICETREE_BUNDLE}" = "1" ]; then
cat ${D}/${KERNEL_IMAGEDEST}/$type \
${DEPLOYDIR}/$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext \
> ${DEPLOYDIR}/$type-$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext.bin
ln -sf $type-$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext.bin \
${DEPLOYDIR}/$type-$dtb_base_name-${KERNEL_DTB_LINK_NAME}.$dtb_ext.bin
if [ -e "${KERNEL_OUTPUT_DIR}/${type}.initramfs" ]; then
cat ${KERNEL_OUTPUT_DIR}/${type}.initramfs \
${DEPLOYDIR}/$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext
> ${DEPLOYDIR}/${type}-${INITRAMFS_NAME}-$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext.bin
ln -sf ${type}-${INITRAMFS_NAME}-$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext.bin \
${DEPLOYDIR}/${type}-${INITRAMFS_NAME}-$dtb_base_name-${KERNEL_DTB_LINK_NAME}.$dtb_ext.bin
fi
fi
done
done
}
|
