1 files changed, 66 insertions, 0 deletions
diff --git a/roms/u-boot/dts/Makefile b/roms/u-boot/dts/Makefile
new file mode 100644
index 000000000..cb3111382
--- /dev/null
+++ b/roms/u-boot/dts/Makefile
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (c) 2011 The Chromium OS Authors.
+
+# This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
+# enabled. See doc/README.fdt-control for more details.
+
+DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
+ifeq ($(DEVICE_TREE),)
+DEVICE_TREE := unset
+endif
+
+ifneq ($(EXT_DTB),)
+DTB := $(EXT_DTB)
+else
+DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
+endif
+
+$(obj)/dt-$(SPL_NAME).dtb: dts/dt.dtb $(objtree)/tools/fdtgrep FORCE
+	mkdir -p $(dir $@)
+	$(call if_changed,fdtgrep)
+
+ifeq ($(CONFIG_OF_DTB_PROPS_REMOVE),y)
+$(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
+	$(call if_changed,fdt_rm_props)
+else
+$(obj)/dt.dtb: $(DTB) FORCE
+	$(call if_changed,shipped)
+endif
+
+targets += dt.dtb
+
+$(DTB): arch-dtbs
+	$(Q)test -e $@ || (						\
+	echo >&2;							\
+	echo >&2 "Device Tree Source ($@) is not correctly specified.";	\
+	echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'";		\
+	echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument";	\
+	echo >&2;							\
+	/bin/false)
+
+PHONY += arch-dtbs
+arch-dtbs:
+	$(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
+
+ifeq ($(CONFIG_SPL_BUILD),y)
+obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
+# support "out-of-tree" build for dtb-spl
+$(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
+	$(call if_changed_dep,as_o_S)
+else
+obj-$(CONFIG_OF_EMBED) := dt.dtb.o
+endif
+
+# Target for U-Boot proper
+dtbs: $(obj)/dt.dtb
+	@:
+
+# Target for SPL/TPL
+spl_dtbs: $(obj)/dt-$(SPL_NAME).dtb
+	@:
+
+clean-files := dt.dtb.S
+
+# Let clean descend into dts directories
+subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts ../arch/powerpc/dts ../arch/riscv/dts