diff options
Diffstat (limited to 'meta/classes-recipe/kernel-devicetree.bbclass')
| -rw-r--r-- | meta/classes-recipe/kernel-devicetree.bbclass | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/meta/classes-recipe/kernel-devicetree.bbclass b/meta/classes-recipe/kernel-devicetree.bbclass new file mode 100644 index 0000000000..eff052b402 --- /dev/null +++ b/meta/classes-recipe/kernel-devicetree.bbclass @@ -0,0 +1,139 @@ +# +# Copyright OpenEmbedded Contributors +# +# SPDX-License-Identifier: MIT +# + +# Support for device tree generation +python () { + if not bb.data.inherits_class('nopackages', d): + d.appendVar("PACKAGES", " ${KERNEL_PACKAGE_NAME}-devicetree") + if d.getVar('KERNEL_DEVICETREE_BUNDLE') == '1': + d.appendVar("PACKAGES", " ${KERNEL_PACKAGE_NAME}-image-zimage-bundle") +} + +# recursivly search for devicetree files +FILES:${KERNEL_PACKAGE_NAME}-devicetree = " \ + /${KERNEL_DTBDEST}/**/*.dtb \ + /${KERNEL_DTBDEST}/**/*.dtbo \ +" + +FILES:${KERNEL_PACKAGE_NAME}-image-zimage-bundle = "/${KERNEL_IMAGEDEST}/zImage-*.dtb.bin" + +# Generate kernel+devicetree bundle +KERNEL_DEVICETREE_BUNDLE ?= "0" + +# dtc flags passed via DTC_FLAGS env variable +KERNEL_DTC_FLAGS ?= "" + +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 ${ARCH}. Currently it is only supported for 'ARM'." + esac + else + bberror 'The KERNEL_DEVICETREE_BUNDLE requires the KERNEL_IMAGETYPE to contain zImage.' + fi + fi +} + +do_compile:append() { + if [ -n "${KERNEL_DTC_FLAGS}" ]; then + export DTC_FLAGS="${KERNEL_DTC_FLAGS}" + fi + + for dtbf in ${KERNEL_DEVICETREE}; do + dtb=`normalize_dtb "$dtbf"` + oe_runmake $dtb CC="${KERNEL_CC} $cc_extra " LD="${KERNEL_LD}" OBJCOPY="${KERNEL_OBJCOPY}" STRIP="${KERNEL_STRIP}" ${KERNEL_EXTRA_ARGS} + done +} + +do_install:append() { + install -d ${D}/${KERNEL_DTBDEST} + for dtbf in ${KERNEL_DEVICETREE}; do + dtb=`normalize_dtb "$dtbf"` + dtb_path=`get_real_dtb_path_in_kernel "$dtb"` + if "${@'false' if oe.types.boolean(d.getVar('KERNEL_DTBVENDORED')) else 'true'}"; then + dtb_ext=${dtb##*.} + dtb_base_name=`basename $dtb .$dtb_ext` + dtb=$dtb_base_name.$dtb_ext + fi + install -Dm 0644 $dtb_path ${D}/${KERNEL_DTBDEST}/$dtb + 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 $deployDir + if "${@'false' if oe.types.boolean(d.getVar('KERNEL_DTBVENDORED')) else 'true'}"; then + dtb=$dtb_base_name.$dtb_ext + fi + install -m 0644 ${D}/${KERNEL_DTBDEST}/$dtb $deployDir/$dtb_base_name.$dtb_ext + if [ -n "${KERNEL_DTB_NAME}" ] ; then + ln -sf $dtb_base_name.$dtb_ext $deployDir/$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext + fi + if [ -n "${KERNEL_DTB_LINK_NAME}" ] ; then + ln -sf $dtb_base_name.$dtb_ext $deployDir/$dtb_base_name-${KERNEL_DTB_LINK_NAME}.$dtb_ext + fi + 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.$dtb_ext \ + > $deployDir/$type-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} + if [ -n "${KERNEL_DTB_NAME}" ]; then + ln -sf $type-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} \ + $deployDir/$type-$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext${KERNEL_DTB_BIN_EXT} + fi + if [ -n "${KERNEL_DTB_LINK_NAME}" ]; then + ln -sf $type-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} \ + $deployDir/$type-$dtb_base_name-${KERNEL_DTB_LINK_NAME}.$dtb_ext${KERNEL_DTB_BIN_EXT} + fi + if [ -e "${KERNEL_OUTPUT_DIR}/${type}.initramfs" ]; then + cat ${KERNEL_OUTPUT_DIR}/${type}.initramfs \ + $deployDir/$dtb_base_name.$dtb_ext \ + > $deployDir/${type}-${INITRAMFS_NAME}-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} + if [ -n "${KERNEL_DTB_NAME}" ]; then + ln -sf ${type}-${INITRAMFS_NAME}-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} \ + $deployDir/${type}-${INITRAMFS_NAME}-$dtb_base_name-${KERNEL_DTB_NAME}.$dtb_ext${KERNEL_DTB_BIN_EXT} + fi + if [ -n "${KERNEL_DTB_LINK_NAME}" ]; then + ln -sf ${type}-${INITRAMFS_NAME}-$dtb_base_name.$dtb_ext${KERNEL_DTB_BIN_EXT} \ + $deployDir/${type}-${INITRAMFS_NAME}-$dtb_base_name-${KERNEL_DTB_LINK_NAME}.$dtb_ext${KERNEL_DTB_BIN_EXT} + fi + fi + fi + done + done +} |