1 files changed, 83 insertions, 0 deletions
diff --git a/meta-xilinx-bsp/recipes-bsp/device-tree/device-tree.bb b/meta-xilinx-bsp/recipes-bsp/device-tree/device-tree.bb
new file mode 100644
index 00000000..7c502838
--- /dev/null
+++ b/meta-xilinx-bsp/recipes-bsp/device-tree/device-tree.bb
@@ -0,0 +1,83 @@
+SUMMARY = "Device Trees for BSPs"
+DESCRIPTION = "Device Tree generation and packaging for BSP Device Trees."
+SECTION = "bsp"
+
+LICENSE = "MIT & GPLv2"
+LIC_FILES_CHKSUM = " \
+		file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302 \
+		file://${COMMON_LICENSE_DIR}/GPL-2.0;md5=801f80980d171dd6425610833a22dbe6 \
+		"
+
+inherit deploy kernel-arch
+
+INHIBIT_DEFAULT_DEPS = "1"
+DEPENDS += "dtc-native"
+
+COMPATIBLE_MACHINE ?= "^$"
+
+PACKAGE_ARCH = "${MACHINE_ARCH}"
+
+FILES_${PN} = "/boot/devicetree/*.dtb /boot/devicetree/*.dtbo"
+
+S = "${WORKDIR}"
+B = "${WORKDIR}/build"
+
+SYSROOT_DIRS += "/boot/devicetree"
+
+# By default provide the current kernel arch's boot/dts and boot/dts/include.
+KERNEL_DTS_INCLUDE ??= " \
+		${STAGING_KERNEL_DIR}/arch/${ARCH}/boot/dts \
+		${STAGING_KERNEL_DIR}/arch/${ARCH}/boot/dts/include \
+		"
+# For arm64/zynqmp the xilinx specific includes are subdired under a vendor directory.
+KERNEL_DTS_INCLUDE_append_zynqmp = " \
+		${STAGING_KERNEL_DIR}/arch/${ARCH}/boot/dts/xilinx \
+		"
+
+DTS_FILES_PATH ?= "${S}"
+DTS_INCLUDE ?= "${DTS_FILES_PATH} ${KERNEL_DTS_INCLUDE}"
+
+DT_PADDING_SIZE ?= "0x3000"
+DEVICETREE_FLAGS ?= " \
+		-R 8 -p ${DT_PADDING_SIZE} -b 0 \
+		${@' '.join(['-i %s' % i for i in d.getVar('DTS_INCLUDE', True).split()])} \
+               "
+DEVICETREE_OFLAGS ?= "-@ -H epapr"
+DEVICETREE_PP_FLAGS ?= " \
+		-nostdinc -Ulinux -x assembler-with-cpp \
+		${@' '.join(['-I%s' % i for i in d.getVar('DTS_INCLUDE', True).split()])} \
+		"
+
+python () {
+    # auto add dependency on kernel tree
+    if d.getVar("KERNEL_DTS_INCLUDE") != "":
+        d.appendVarFlag("do_compile", "depends", " virtual/kernel:do_shared_workdir")
+}
+
+do_compile() {
+	for DTS_FILE in ${DTS_FILES_PATH}/*.dts; do
+		DTS_NAME=`basename -s .dts ${DTS_FILE}`
+		${BUILD_CPP} ${DEVICETREE_PP_FLAGS} -o `basename ${DTS_FILE}`.pp ${DTS_FILE}
+
+		# for now use the existance of the '/plugin/' tag to detect overlays
+		if grep -qse "/plugin/;" `basename ${DTS_FILE}`.pp; then
+			dtc ${DEVICETREE_OFLAGS} -I dts -O dtb ${DEVICETREE_FLAGS} -o ${DTS_NAME}.dtbo `basename ${DTS_FILE}`.pp
+		else
+			dtc -I dts -O dtb ${DEVICETREE_FLAGS} -o ${DTS_NAME}.dtb `basename ${DTS_FILE}`.pp
+		fi
+	done
+}
+
+do_install() {
+	for DTB_FILE in `ls *.dtb *.dtbo`; do
+		install -Dm 0644 ${B}/${DTB_FILE} ${D}/boot/devicetree/${DTB_FILE}
+	done
+}
+
+do_deploy() {
+	for DTB_FILE in `ls *.dtb *.dtbo`; do
+		install -Dm 0644 ${B}/${DTB_FILE} ${DEPLOYDIR}/${DTB_FILE}
+	done
+}
+addtask deploy before do_build after do_install
+