| # | |
| # 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 | |
| ARCH_PATH := arch/$(ARCH)/dts | |
| dtb_depends := arch-dtbs | |
| ifneq ($(EXT_DTB),) | |
| DTB := $(EXT_DTB) | |
| else | |
| DTB := $(ARCH_PATH)/$(DEVICE_TREE).dtb | |
| dtb_depends += $(DTB:.dtb=.dts) | |
| endif | |
| # Pass the original device tree file through fdtgrep twice. The first pass | |
| # removes any unwanted nodes (i.e. those which don't have the | |
| # 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second | |
| # pass removes various unused properties from the remaining nodes. | |
| # The output is typically a much smaller device tree file. | |
| ifeq ($(CONFIG_TPL_BUILD),y) | |
| fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl | |
| else | |
| fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl | |
| endif | |
| quiet_cmd_fdtgrep = FDTGREP $@ | |
| cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \ | |
| -n /chosen -n /config -O dtb | \ | |
| $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \ | |
| $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS))) | |
| $(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE | |
| $(call if_changed,fdtgrep) | |
| $(obj)/dt.dtb: $(DTB) FORCE | |
| $(call if_changed,shipped) | |
| targets += dt.dtb dt-spl.dtb | |
| $(DTB): $(dtb_depends) | |
| ifeq ($(EXT_DTB),) | |
| $(Q)$(MAKE) $(build)=$(ARCH_PATH) $@ | |
| endif | |
| $(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_PATH) dtbs | |
| .SECONDARY: $(obj)/dt.dtb.S $(obj)/dt-spl.dtb.S | |
| ifeq ($(CONFIG_SPL_BUILD),y) | |
| obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o | |
| # support "out-of-tree" build for dtb-spl | |
| $(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE | |
| $(call if_changed_dep,as_o_S) | |
| else | |
| obj-$(CONFIG_OF_EMBED) := dt.dtb.o | |
| endif | |
| dtbs: $(obj)/dt.dtb $(obj)/dt-spl.dtb | |
| @: | |
| clean-files := dt.dtb.S dt-spl.dtb.S | |
| # Let clean descend into dts directories | |
| subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts |