1 # SPDX-License-Identifier: GPL-2.0+
3 # Copyright (c) 2011 The Chromium OS Authors.
5 # This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
6 # enabled. See doc/README.fdt-control for more details.
8 DEVICE_TREE ?
= $(CONFIG_DEFAULT_DEVICE_TREE
:"%"=%)
13 ARCH_PATH
:= arch
/$(ARCH
)/dts
14 dtb_depends
:= arch-dtbs
19 DTB
:= $(ARCH_PATH
)/$(DEVICE_TREE
).dtb
20 dtb_depends
+= $(DTB
:.dtb
=.dts
)
23 $(obj
)/dt-spl.dtb
: $(DTB
) $(objtree
)/tools
/fdtgrep FORCE
24 $(call if_changed
,fdtgrep
)
26 $(obj
)/dt.dtb
: $(DTB
) FORCE
27 $(call if_changed
,shipped
)
29 targets
+= dt.dtb dt-spl.dtb
31 $(DTB
): $(dtb_depends
)
33 $(Q
)$(MAKE
) $(build
)=$(ARCH_PATH
) $@
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"; \
45 $(Q
)$(MAKE
) $(build
)=$(ARCH_PATH
) dtbs
47 ifeq ($(CONFIG_SPL_BUILD
),y
)
48 obj-
$(CONFIG_OF_EMBED
) := dt-spl.dtb.o
49 # support "out-of-tree" build for dtb-spl
50 $(obj
)/dt-spl.dtb.o
: $(obj
)/dt-spl.dtb.S FORCE
51 $(call if_changed_dep
,as_o_S
)
53 obj-
$(CONFIG_OF_EMBED
) := dt.dtb.o
56 dtbs
: $(obj
)/dt.dtb
$(obj
)/dt-spl.dtb
59 clean-files
:= dt.dtb.S dt-spl.dtb.S
61 # Let clean descend into dts directories
62 subdir-
+= ..
/arch
/arm
/dts ..
/arch
/microblaze
/dts ..
/arch
/mips
/dts ..
/arch
/sandbox
/dts ..
/arch
/x86
/dts ..
/arch
/powerpc
/dts ..
/arch
/riscv
/dts