xref: /openbmc/u-boot/dts/Makefile (revision 6ab6b2af) 
1#
2# Copyright (c) 2011 The Chromium OS Authors.
3#
4# SPDX-License-Identifier:	GPL-2.0+
5#
6
7# This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
8# enabled. See doc/README.fdt-control for more details.
9
10DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
11ifeq ($(DEVICE_TREE),)
12DEVICE_TREE := notfound
13endif
14
15DTS := $(srctree)/board/$(VENDOR)/dts/$(DEVICE_TREE).dts
16
17DTC_FLAGS += -i $(srctree)/arch/$(ARCH)/dts -R 4 -p 0x1000
18
19$(obj)/dt.dtb: $(DTS) FORCE
20	$(call if_changed_dep,dtc)
21
22targets += dt.dtb
23
24$(DTS):
25	@echo >&2
26	@echo >&2 "Device Tree Source is not specified."
27	@echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"
28	@echo >&2 "or build with 'DEVICE_TREE=<dts-file-name>' argument"
29	@/bin/false
30
31.SECONDARY: $(obj)/dt.dtb.S
32
33obj-$(CONFIG_OF_EMBED) := dt.dtb.o
34
35dtbs: $(obj)/dt.dtb
36	@:
37
38clean-files := dt.dtb.S
39