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Commit 5d504406 authored by Puja Gupta's avatar Puja Gupta Committed by Elliot Berman
Browse files

scripts: Makefile: add support to compile DT overlay blobs 



Add support to compile device tree overlay blob.
'dtbo-y' target can be used to specify DT overlay blob.
'<target>-obj'  must be specified to list base and overlay blobs.

Change-Id: Ib5036c70ba46374619cc43f9f7b697e1a444aebf
Signed-off-by: default avatarPuja Gupta <pujag@codeaurora.org>
Signed-off-by: default avatarRishabh Bhatnagar <rishabhb@codeaurora.org>
[eberman@codeaurora.org: Resolve merge conflicts]
Signed-off-by: default avatarElliot Bermna <eberman@codeaurora.org>
parent d9f515c2

scripts/Makefile.build

+5 −0
Original line number Diff line number Diff line
@@ -48,6 +48,11 @@ ifneq ($(hostprogs-y)$(hostprogs-m)$(hostlibs-y)$(hostlibs-m)$(hostcxxlibs-y)$(h 
include scripts/Makefile.host

endif



# Do not include host rules unless needed

ifneq ($(dtbo-y),)

include scripts/Makefile.dtbo

endif



ifndef obj

$(warning kbuild: Makefile.build is included improperly)

endif

scripts/Makefile.dtbo

0 → 100644
+25 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: GPL-2.0-only

__dtbo := $(sort $(dtbo-y))



dtbo-base	:= $(sort $(foreach m,$(__dtbo),$($(m)-base)))

dtbo := $(foreach m,$(__dtbo),$(if $($(m)-base),$(m)))



__dtbo     := $(addprefix $(obj)/,$(__dtbo))

dtbo-base	:= $(addprefix $(obj)/,$(dtbo-base))

dtbo	:= $(addprefix $(obj)/,$(dtbo))



ifneq ($(DTC_OVERLAY_TEST_EXT),)

DTC_OVERLAY_TEST = $(DTC_OVERLAY_TEST_EXT)

quiet_cmd_dtbo_verify	= VERIFY  $@

cmd_dtbo_verify = $(DTC_OVERLAY_TEST) $(addprefix $(obj)/,$($(@F)-base)) $@ $(dot-target).dtb

else

cmd_dtbo_verify = true

endif



$(obj)/%.dtbo: $(src)/%.dts FORCE

	$(call if_changed_dep,dtc,dtb,-@)

	$(call if_changed,dtbo_verify)



$(call multi_depend, $(dtbo), , -base)



always +=  $(dtbo)

scripts/Makefile.lib

+2 −2
Original line number Diff line number Diff line
@@ -291,12 +291,12 @@ quiet_cmd_dtc = DTC $@ 
cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \

	$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \

	$(DTC) -O $(2) -o $@ -b 0 \

		$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \

		$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(3) $(DTC_FLAGS) \

		-d $(depfile).dtc.tmp $(dtc-tmp) ; \

	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)



$(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE

	$(call if_changed_dep,dtc,dtb)

	$(call if_changed_dep,dtc,dtb,-@)



DT_CHECKER ?= dt-validate

DT_BINDING_DIR := Documentation/devicetree/bindings