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- #
- # Copyright (c) 2011 The Chromium OS Authors.
- #
- # SPDX-License-Identifier: GPL-2.0+
- #
- # This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
- # enabled. See doc/README.fdt-control for more details.
- DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
- ifeq ($(DEVICE_TREE),)
- DEVICE_TREE := unset
- endif
- ifneq ($(EXT_DTB),)
- DTB := $(EXT_DTB)
- else
- DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
- endif
- $(obj)/dt.dtb: $(DTB) FORCE
- $(call if_changed,shipped)
- targets += dt.dtb
- $(DTB): arch-dtbs
- $(Q)test -e $@ || ( \
- echo >&2; \
- echo >&2 "Device Tree Source is not correctly specified."; \
- echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
- echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
- echo >&2; \
- /bin/false)
- arch-dtbs:
- $(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
- .SECONDARY: $(obj)/dt.dtb.S
- obj-$(CONFIG_OF_EMBED) := dt.dtb.o
- dtbs: $(obj)/dt.dtb
- @:
- clean-files := dt.dtb.S
- # Let clean descend into dts directories
- subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts
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