xref: /rk3399_rockchip-uboot/dts/Makefile (revision fcdd83d4455871c49a93236c3f1cb964727f8c0c) 
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
15ARCH_PATH := arch/$(ARCH)/dts
16dtb_depends := arch-dtbs
17
18ifneq ($(EXT_DTB),)
19DTB := $(EXT_DTB)
20else
21DTB := $(ARCH_PATH)/$(DEVICE_TREE).dtb
22dtb_depends += $(DTB:.dtb=.dts)
23endif
24
25# Pass the original device tree file through fdtgrep twice. The first pass
26# removes any unwanted nodes (i.e. those which don't have the
27# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
28# pass removes various unused properties from the remaining nodes.
29# The output is typically a much smaller device tree file.
30ifeq ($(CONFIG_TPL_BUILD),y)
31fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
32else
33fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
34endif
35quiet_cmd_fdtgrep = FDTGREP $@
36      cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
37		-n /chosen -n /config -O dtb | \
38	$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
39		$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
40
41fdtgrep_tpl_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
42quiet_cmd_fdtgrep_tpl = FDTGREP $@
43      cmd_fdtgrep_tpl = $(objtree)/tools/fdtgrep $(fdtgrep_tpl_props) -RT $< \
44                -n /config -O dtb | \
45        $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
46                $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
47
48$(obj)/dt-tpl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
49	$(call if_changed,fdtgrep_tpl)
50
51$(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
52	$(call if_changed,fdtgrep)
53
54ifeq ($(CONFIG_USING_KERNEL_DTB),y)
55$(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
56	$(call if_changed,fdtgrep)
57else
58$(obj)/dt.dtb: $(DTB) FORCE
59	$(call if_changed,shipped)
60endif
61
62targets += dt.dtb dt-spl.dtb dt-tpl.dtb
63
64$(DTB): $(dtb_depends)
65ifeq ($(EXT_DTB),)
66	$(Q)$(MAKE) $(build)=$(ARCH_PATH) $@
67endif
68	$(Q)test -e $@ || (						\
69	echo >&2;							\
70	echo >&2 "Device Tree Source is not correctly specified.";	\
71	echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'";		\
72	echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument";	\
73	echo >&2;							\
74	/bin/false)
75
76arch-dtbs:
77	$(Q)$(MAKE) $(build)=$(ARCH_PATH) dtbs
78
79.SECONDARY: $(obj)/dt.dtb.S $(obj)/dt-spl.dtb.S $(obj)/dt-tpl.dtb.S
80
81
82ifeq ($(CONFIG_SPL_BUILD),y)
83obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
84# support "out-of-tree" build for dtb-spl
85$(obj)/dt-tpl.dtb.o: $(obj)/dt-tpl.dtb.S FORCE
86	$(call if_changed_dep,as_o_S)
87
88$(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
89	$(call if_changed_dep,as_o_S)
90else
91obj-$(CONFIG_OF_EMBED) := dt.dtb.o
92endif
93
94dtbs: $(obj)/dt.dtb $(obj)/dt-spl.dtb $(obj)/dt-tpl.dtb
95	@:
96
97clean-files := dt.dtb.S dt-spl.dtb.S dt-tpl.dtb.S
98
99# Let clean descend into dts directories
100subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts
101