xref: /openbmc/u-boot/dts/Makefile (revision b9d1dbd4) 
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 := unset
13endif
14
15DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
16
17$(obj)/dt.dtb: $(DTB) FORCE
18	$(call if_changed,shipped)
19
20targets += dt.dtb
21
22$(DTB): arch-dtbs
23	$(Q)test -e $@ || (						\
24	echo >&2;							\
25	echo >&2 "Device Tree Source is not correctly specified.";	\
26	echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'";		\
27	echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument";	\
28	echo >&2;							\
29	/bin/false)
30
31arch-dtbs:
32	$(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
33
34.SECONDARY: $(obj)/dt.dtb.S
35
36obj-$(CONFIG_OF_EMBED) := dt.dtb.o
37
38dtbs: $(obj)/dt.dtb
39	@:
40
41clean-files := dt.dtb.S
42
43# Let clean descend into dts directories
44subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/sandbox/dts ../arch/x86/dts
45