#
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# Copyright (c) 2011 The Chromium OS Authors.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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# This Makefile builds the internal U-Boot fdt if CONFIG_OF_CONTROL is
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# enabled. See doc/README.fdt-control for more details.
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DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
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ifeq ($(DEVICE_TREE),)
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DEVICE_TREE := unset
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endif
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ARCH_PATH := arch/$(ARCH)/dts
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dtb_depends := arch-dtbs
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ifneq ($(EXT_DTB),)
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DTB := $(EXT_DTB)
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else
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DTB := $(ARCH_PATH)/$(DEVICE_TREE).dtb
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dtb_depends += $(DTB:.dtb=.dts)
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endif
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# Pass the original device tree file through fdtgrep twice. The first pass
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# removes any unwanted nodes (i.e. those which don't have the
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# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
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# pass removes various unused properties from the remaining nodes.
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# The output is typically a much smaller device tree file.
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ifeq ($(CONFIG_TPL_BUILD),y)
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fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
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else
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fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
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endif
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quiet_cmd_fdtgrep = FDTGREP $@
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cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
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-n /chosen -n /config -O dtb | \
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$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
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$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
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quiet_cmd_fdtgrep_uboot = FDTGREP $@
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cmd_fdtgrep_uboot = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
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-n /chosen -n /config -O dtb | \
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$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
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$(addprefix -P ,$(subst $\",,$(CONFIG_OF_U_BOOT_REMOVE_PROPS)))
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fdtgrep_tpl_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
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quiet_cmd_fdtgrep_tpl = FDTGREP $@
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cmd_fdtgrep_tpl = $(objtree)/tools/fdtgrep $(fdtgrep_tpl_props) -RT $< \
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-n /chosen -n config -O dtb | \
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$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
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$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
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fdtgrep_spl_minimum_props := -b u-boot,dm-spl
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quiet_cmd_fdtgrep_spl_minimum = FDTGREP $@
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cmd_fdtgrep_spl_minimum = $(objtree)/tools/fdtgrep $(fdtgrep_spl_minimum_props) -RT $< \
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-n /chosen -n config -O dtb | \
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$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
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$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
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$(obj)/dt-tpl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
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$(call if_changed,fdtgrep_tpl)
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ifeq ($(CONFIG_SPL_DTB_MINIMUM),y)
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$(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
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$(call if_changed,fdtgrep_spl_minimum)
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else
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$(obj)/dt-spl.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
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$(call if_changed,fdtgrep)
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endif
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# Normally, usbplug is enabled with kernel dtb disabled
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ifneq ($(CONFIG_USING_KERNEL_DTB)$(CONFIG_SUPPORT_USBPLUG),)
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$(obj)/dt.dtb: $(DTB) $(objtree)/tools/fdtgrep FORCE
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ifneq ($(CONFIG_OF_U_BOOT_REMOVE_PROPS), "")
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$(call if_changed,fdtgrep_uboot)
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else
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$(call if_changed,fdtgrep)
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endif
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else
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$(obj)/dt.dtb: $(DTB) FORCE
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$(call if_changed,shipped)
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endif
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targets += dt.dtb dt-spl.dtb dt-tpl.dtb
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$(DTB): $(dtb_depends)
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ifeq ($(EXT_DTB),)
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$(Q)$(MAKE) $(build)=$(ARCH_PATH) $@
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endif
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$(Q)test -e $@ || ( \
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echo >&2; \
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echo >&2 "Device Tree Source is not correctly specified."; \
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echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
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echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
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echo >&2; \
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/bin/false)
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arch-dtbs:
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$(Q)$(MAKE) $(build)=$(ARCH_PATH) dtbs
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.SECONDARY: $(obj)/dt.dtb.S $(obj)/dt-spl.dtb.S $(obj)/dt-tpl.dtb.S
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ifeq ($(CONFIG_SPL_BUILD),y)
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obj-$(CONFIG_OF_EMBED) := dt-spl.dtb.o
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# support "out-of-tree" build for dtb-spl
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$(obj)/dt-tpl.dtb.o: $(obj)/dt-tpl.dtb.S FORCE
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$(call if_changed_dep,as_o_S)
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$(obj)/dt-spl.dtb.o: $(obj)/dt-spl.dtb.S FORCE
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$(call if_changed_dep,as_o_S)
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else
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obj-$(CONFIG_OF_EMBED) := dt.dtb.o
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endif
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dtbs: $(obj)/dt.dtb $(obj)/dt-spl.dtb $(obj)/dt-tpl.dtb
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@:
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clean-files := dt.dtb.S dt-spl.dtb.S dt-tpl.dtb.S
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# Let clean descend into dts directories
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subdir- += ../arch/arm/dts ../arch/microblaze/dts ../arch/mips/dts ../arch/sandbox/dts ../arch/x86/dts
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