| # |
| # 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/*/dts |