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83d290c5 1# SPDX-License-Identifier: GPL-2.0+
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2#
3# Copyright (c) 2011 The Chromium OS Authors.
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4
5# This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
6# enabled. See doc/README.fdt-control for more details.
7
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8DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
9ifeq ($(DEVICE_TREE),)
3284c8b8 10DEVICE_TREE := unset
6ab6b2af 11endif
c8391a0e 12
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13ARCH_PATH := arch/$(ARCH)/dts
14dtb_depends := arch-dtbs
15
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16ifneq ($(EXT_DTB),)
17DTB := $(EXT_DTB)
63b4b5ba 18else
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19DTB := $(ARCH_PATH)/$(DEVICE_TREE).dtb
20dtb_depends += $(DTB:.dtb=.dts)
63b4b5ba 21endif
c8391a0e 22
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23$(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
24 $(call if_changed,fdtgrep)
25
3284c8b8 26$(obj)/dt.dtb: $(DTB) FORCE
b9d1dbd4 27 $(call if_changed,shipped)
bbb0b128 28
9bd76b80 29targets += dt.dtb dt-spl.dtb
bbb0b128 30
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31$(DTB): $(dtb_depends)
32ifeq ($(EXT_DTB),)
33 $(Q)$(MAKE) $(build)=$(ARCH_PATH) $@
34endif
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35 $(Q)test -e $@ || ( \
36 echo >&2; \
37 echo >&2 "Device Tree Source is not correctly specified."; \
38 echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
39 echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
40 echo >&2; \
41 /bin/false)
42
43arch-dtbs:
27cb7300 44 $(Q)$(MAKE) $(build)=$(ARCH_PATH) dtbs
bbb0b128 45
9bd76b80 46.SECONDARY: $(obj)/dt.dtb.S $(obj)/dt-spl.dtb.S
bbb0b128 47
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48
49ifeq ($(CONFIG_SPL_BUILD),y)
50obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
51# support "out-of-tree" build for dtb-spl
52$(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
53 $(call if_changed_dep,as_o_S)
54else
6ab6b2af 55obj-$(CONFIG_OF_EMBED) := dt.dtb.o
9bd76b80 56endif
bbb0b128 57
9bd76b80 58dtbs: $(obj)/dt.dtb $(obj)/dt-spl.dtb
6ab6b2af 59 @:
bbb0b128 60
9bd76b80 61clean-files := dt.dtb.S dt-spl.dtb.S
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62
63# Let clean descend into dts directories
be6b2b31 64subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts