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[24.155.109.49]) by smtp.googlemail.com with ESMTPSA id s203-v6sm2047035oif.33.2018.10.01.08.25.40 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 01 Oct 2018 08:25:41 -0700 (PDT) From: Rob Herring To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Masahiro Yamada , Frank Rowand Cc: Michal Marek , Vineet Gupta , Russell King , Catalin Marinas , Yoshinori Sato , Michal Simek , Ralf Baechle , James Hogan , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Chris Zankel , Max Filippov , linux-kbuild@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, uclinux-h8-devel@lists.sourceforge.jp, linux-mips@linux-mips.org, nios2-dev@lists.rocketboards.org, linuxppc-dev@lists.ozlabs.org, linux-xtensa@linux-xtensa.org, Will Deacon , Paul Burton , Ley Foon Tan Subject: [PATCH v4 6/9] kbuild: consolidate Devicetree dtb build rules Date: Mon, 1 Oct 2018 10:25:28 -0500 Message-Id: <20181001152531.3385-7-robh@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181001152531.3385-1-robh@kernel.org> References: <20181001152531.3385-1-robh@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There is nothing arch specific about building dtb files other than their location under /arch/*/boot/dts/. Keeping each arch aligned is a pain. The dependencies and supported targets are all slightly different. Also, a cross-compiler for each arch is needed, but really the host compiler preprocessor is perfectly fine for building dtbs. Move the build rules to a common location and remove the arch specific ones. This is done in a single step to avoid warnings about overriding rules. The build dependencies had been a mixture of 'scripts' and/or 'prepare'. These pull in several dependencies some of which need a target compiler (specifically devicetable-offsets.h) and aren't needed to build dtbs. All that is really needed is dtc, so adjust the dependencies to only be dtc. This change enables support 'dtbs_install' on some arches which were missing the target. Acked-by: Will Deacon Acked-by: Paul Burton Acked-by: Ley Foon Tan Cc: Masahiro Yamada Cc: Michal Marek Cc: Vineet Gupta Cc: Russell King Cc: Catalin Marinas Cc: Yoshinori Sato Cc: Michal Simek Cc: Ralf Baechle Cc: James Hogan Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Chris Zankel Cc: Max Filippov Cc: linux-kbuild@vger.kernel.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: uclinux-h8-devel@lists.sourceforge.jp Cc: linux-mips@linux-mips.org Cc: nios2-dev@lists.rocketboards.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-xtensa@linux-xtensa.org Signed-off-by: Rob Herring --- v4: - Make dtbs and %.dtb rules depend on arch/$ARCH/boot/dts path rather than CONFIG_OF_EARLY_FLATTREE - Fix install path missing kernel version for dtbs_install - Fix "make CONFIG_OF_ALL_DTBS=y" for arches like ARM which selectively enable CONFIG_OF (and therefore dtc) Makefile | 37 ++++++++++++++++++++++++++++++- arch/arc/Makefile | 6 ----- arch/arm/Makefile | 20 +---------------- arch/arm64/Makefile | 17 +------------- arch/c6x/Makefile | 2 -- arch/h8300/Makefile | 11 +-------- arch/microblaze/Makefile | 4 +--- arch/microblaze/boot/dts/Makefile | 2 ++ arch/mips/Makefile | 15 +------------ arch/nds32/Makefile | 2 +- arch/nios2/Makefile | 7 ------ arch/nios2/boot/Makefile | 4 ---- arch/powerpc/Makefile | 3 --- arch/xtensa/Makefile | 12 +--------- scripts/Makefile | 3 +-- scripts/Makefile.lib | 2 +- scripts/dtc/Makefile | 2 +- 17 files changed, 48 insertions(+), 101 deletions(-) -- 2.17.1 diff --git a/Makefile b/Makefile index 6c3da3e10f07..251875470c5b 100644 --- a/Makefile +++ b/Makefile @@ -1061,7 +1061,7 @@ include/config/kernel.release: $(srctree)/Makefile FORCE # Carefully list dependencies so we do not try to build scripts twice # in parallel PHONY += scripts -scripts: scripts_basic asm-generic gcc-plugins $(autoksyms_h) +scripts: scripts_basic scripts_dtc asm-generic gcc-plugins $(autoksyms_h) $(Q)$(MAKE) $(build)=$(@) # Things we need to do before we recursively start building the kernel @@ -1205,6 +1205,35 @@ kselftest-merge: $(srctree)/tools/testing/selftests/*/config +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig +# --------------------------------------------------------------------------- +# Devicetree files + +ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),) +dtstree := arch/$(SRCARCH)/boot/dts +endif + +ifneq ($(dtstree),) + +%.dtb: prepare3 scripts_dtc + $(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@ + +PHONY += dtbs dtbs_install +dtbs: prepare3 scripts_dtc + $(Q)$(MAKE) $(build)=$(dtstree) + +dtbs_install: + $(Q)$(MAKE) $(dtbinst)=$(dtstree) + +ifdef CONFIG_OF_EARLY_FLATTREE +all: dtbs +endif + +endif + +PHONY += scripts_dtc +scripts_dtc: scripts_basic + $(Q)$(MAKE) $(build)=scripts/dtc + # --------------------------------------------------------------------------- # Modules @@ -1414,6 +1443,12 @@ help: @echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing' @echo ' .config.' @echo '' + @$(if $(dtstree), \ + echo 'Devicetree:'; \ + echo '* dtbs - Build device tree blobs for enabled boards'; \ + echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \ + echo '') + @echo 'Userspace tools targets:' @echo ' use "make tools/help"' @echo ' or "cd tools; make help"' diff --git a/arch/arc/Makefile b/arch/arc/Makefile index 99cce77ab98f..caece8866080 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -124,11 +124,5 @@ boot_targets += uImage uImage.bin uImage.gz $(boot_targets): vmlinux $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@ -%.dtb %.dtb.S %.dtb.o: scripts - $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ - -dtbs: scripts - $(Q)$(MAKE) $(build)=$(boot)/dts - archclean: $(Q)$(MAKE) $(clean)=$(boot) diff --git a/arch/arm/Makefile b/arch/arm/Makefile index d1516f85f25d..161c2df6567e 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -307,12 +307,7 @@ else KBUILD_IMAGE := $(boot)/zImage endif -# Build the DT binary blobs if we have OF configured -ifeq ($(CONFIG_USE_OF),y) -KBUILD_DTBS := dtbs -endif - -all: $(notdir $(KBUILD_IMAGE)) $(KBUILD_DTBS) +all: $(notdir $(KBUILD_IMAGE)) archheaders: @@ -339,17 +334,6 @@ $(BOOT_TARGETS): vmlinux $(INSTALL_TARGETS): $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ -%.dtb: | scripts - $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@ - -PHONY += dtbs dtbs_install - -dtbs: prepare scripts - $(Q)$(MAKE) $(build)=$(boot)/dts - -dtbs_install: - $(Q)$(MAKE) $(dtbinst)=$(boot)/dts - PHONY += vdso_install vdso_install: ifeq ($(CONFIG_VDSO),y) @@ -371,8 +355,6 @@ define archhelp echo ' uImage - U-Boot wrapped zImage' echo ' bootpImage - Combined zImage and initial RAM disk' echo ' (supply initrd image via make variable INITRD=)' - echo '* dtbs - Build device tree blobs for enabled boards' - echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' echo ' install - Install uncompressed kernel' echo ' zinstall - Install compressed kernel' echo ' uinstall - Install U-Boot wrapped compressed kernel' diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 106039d25e2f..b4e994cd3a42 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -113,9 +113,8 @@ core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a # Default target when executing plain make boot := arch/arm64/boot KBUILD_IMAGE := $(boot)/Image.gz -KBUILD_DTBS := dtbs -all: Image.gz $(KBUILD_DTBS) +all: Image.gz Image: vmlinux @@ -127,17 +126,6 @@ Image.%: Image zinstall install: $(Q)$(MAKE) $(build)=$(boot) $@ -%.dtb: scripts - $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ - -PHONY += dtbs dtbs_install - -dtbs: prepare scripts - $(Q)$(MAKE) $(build)=$(boot)/dts - -dtbs_install: - $(Q)$(MAKE) $(dtbinst)=$(boot)/dts - PHONY += vdso_install vdso_install: $(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@ @@ -145,7 +133,6 @@ vdso_install: # We use MRPROPER_FILES and CLEAN_FILES now archclean: $(Q)$(MAKE) $(clean)=$(boot) - $(Q)$(MAKE) $(clean)=$(boot)/dts # We need to generate vdso-offsets.h before compiling certain files in kernel/. # In order to do that, we should use the archprepare target, but we can't since @@ -160,8 +147,6 @@ vdso_prepare: prepare0 define archhelp echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)' echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' - echo '* dtbs - Build device tree blobs for enabled boards' - echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' echo ' install - Install uncompressed kernel' echo ' zinstall - Install compressed kernel' echo ' Install using (your) ~/bin/installkernel or' diff --git a/arch/c6x/Makefile b/arch/c6x/Makefile index 3fe8a948e94c..b7aa854f7008 100644 --- a/arch/c6x/Makefile +++ b/arch/c6x/Makefile @@ -40,9 +40,7 @@ boot := arch/$(ARCH)/boot DTB:=$(subst dtbImage.,,$(filter dtbImage.%, $(MAKECMDGOALS))) export DTB -ifneq ($(DTB),) core-y += $(boot)/dts/ -endif # With make 3.82 we cannot mix normal and wildcard targets diff --git a/arch/h8300/Makefile b/arch/h8300/Makefile index 58634e6bae92..4003ddc616e1 100644 --- a/arch/h8300/Makefile +++ b/arch/h8300/Makefile @@ -31,21 +31,12 @@ CROSS_COMPILE := h8300-unknown-linux- endif core-y += arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/ -ifneq '$(CONFIG_H8300_BUILTIN_DTB)' '""' -core-y += arch/h8300/boot/dts/ -endif +core-y += arch/$(ARCH)/boot/dts/ libs-y += arch/$(ARCH)/lib/ boot := arch/h8300/boot -%.dtb %.dtb.S %.dtb.o: | scripts - $(Q)$(MAKE) $(build)=arch/h8300/boot/dts arch/h8300/boot/dts/$@ - -PHONY += dtbs -dtbs: scripts - $(Q)$(MAKE) $(build)=arch/h8300/boot/dts - archmrproper: archclean: diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile index 4f3ab5707265..0823d291fbeb 100644 --- a/arch/microblaze/Makefile +++ b/arch/microblaze/Makefile @@ -65,9 +65,7 @@ boot := arch/microblaze/boot # Are we making a simpleImage. target? If so, crack out the boardname DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS))) -ifneq ($(DTB),) - core-y += $(boot)/dts/ -endif +core-y += $(boot)/dts/ # defines filename extension depending memory management type ifeq ($(CONFIG_MMU),) diff --git a/arch/microblaze/boot/dts/Makefile b/arch/microblaze/boot/dts/Makefile index 1f77913d404d..fe9af267f598 100644 --- a/arch/microblaze/boot/dts/Makefile +++ b/arch/microblaze/boot/dts/Makefile @@ -1,6 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 # +ifneq ($(DTB),) obj-y += linked_dtb.o # Ensure system.dtb exists @@ -11,6 +12,7 @@ ifneq ($(DTB),system) $(obj)/system.dtb: $(obj)/$(DTB).dtb $(call if_changed,cp) endif +endif quiet_cmd_cp = CP $< $@$2 cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false) diff --git a/arch/mips/Makefile b/arch/mips/Makefile index d74b3742fa5d..d43eeaa6d75b 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -407,18 +407,7 @@ endif CLEAN_FILES += vmlinux.32 vmlinux.64 # device-trees -core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/ - -%.dtb %.dtb.S %.dtb.o: | scripts - $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@ - -PHONY += dtbs -dtbs: scripts - $(Q)$(MAKE) $(build)=arch/mips/boot/dts - -PHONY += dtbs_install -dtbs_install: - $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts +core-y += arch/mips/boot/dts/ archprepare: ifdef CONFIG_MIPS32_N32 @@ -461,8 +450,6 @@ define archhelp echo ' uImage.lzma - U-Boot image (lzma)' echo ' uImage.lzo - U-Boot image (lzo)' echo ' uzImage.bin - U-Boot image (self-extracting)' - echo ' dtbs - Device-tree blobs for enabled boards' - echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' echo echo ' These will be default as appropriate for a configured platform.' echo diff --git a/arch/nds32/Makefile b/arch/nds32/Makefile index 3509fac10491..9f525ed70049 100644 --- a/arch/nds32/Makefile +++ b/arch/nds32/Makefile @@ -47,7 +47,7 @@ CHECKFLAGS += -D__NDS32_EB__ endif boot := arch/nds32/boot -core-$(BUILTIN_DTB) += $(boot)/dts/ +core-y += $(boot)/dts/ .PHONY: FORCE diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile index db2e78fe65c7..52c03e60b114 100644 --- a/arch/nios2/Makefile +++ b/arch/nios2/Makefile @@ -56,12 +56,6 @@ all: vmImage archclean: $(Q)$(MAKE) $(clean)=$(nios2-boot) -%.dtb %.dtb.S %.dtb.o: | scripts - $(Q)$(MAKE) $(build)=$(nios2-boot)/dts $(nios2-boot)/dts/$@ - -dtbs: - $(Q)$(MAKE) $(build)=$(nios2-boot)/dts - $(BOOT_TARGETS): vmlinux $(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@ @@ -74,5 +68,4 @@ define archhelp echo ' (your) ~/bin/$(INSTALLKERNEL) or' echo ' (distribution) /sbin/$(INSTALLKERNEL) or' echo ' install to $$(INSTALL_PATH)' - echo ' dtbs - Build device tree blobs for enabled boards' endef diff --git a/arch/nios2/boot/Makefile b/arch/nios2/boot/Makefile index 0b48f1bf086d..37dfc7e584bc 100644 --- a/arch/nios2/boot/Makefile +++ b/arch/nios2/boot/Makefile @@ -31,9 +31,5 @@ $(obj)/zImage: $(obj)/compressed/vmlinux FORCE $(obj)/compressed/vmlinux: $(obj)/vmlinux.gz FORCE $(Q)$(MAKE) $(build)=$(obj)/compressed $@ -targets += $(dtb-y) - -$(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y)) - install: sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)" diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 53ea887eb34e..42f225f6ec93 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -293,9 +293,6 @@ $(BOOT_TARGETS2): vmlinux bootwrapper_install: $(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@) -%.dtb: scripts - $(Q)$(MAKE) $(build)=$(boot)/dts $(patsubst %,$(boot)/dts/%,$@) - # Used to create 'merged defconfigs' # To use it $(call) it with the first argument as the base defconfig # and the second argument as a space separated list of .config files to merge, diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile index d67e30faff9c..be060dfb1cc3 100644 --- a/arch/xtensa/Makefile +++ b/arch/xtensa/Makefile @@ -80,28 +80,18 @@ LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) head-y := arch/xtensa/kernel/head.o core-y += arch/xtensa/kernel/ arch/xtensa/mm/ core-y += $(buildvar) $(buildplf) +core-y += arch/xtensa/boot/dts/ libs-y += arch/xtensa/lib/ $(LIBGCC) drivers-$(CONFIG_OPROFILE) += arch/xtensa/oprofile/ -ifneq ($(CONFIG_BUILTIN_DTB),"") -core-$(CONFIG_OF) += arch/xtensa/boot/dts/ -endif - boot := arch/xtensa/boot all Image zImage uImage: vmlinux $(Q)$(MAKE) $(build)=$(boot) $@ -%.dtb: - $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@ - -dtbs: scripts - $(Q)$(MAKE) $(build)=$(boot)/dts - define archhelp @echo '* Image - Kernel ELF image with reset vector' @echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)' @echo '* uImage - U-Boot wrapped image' - @echo ' dtbs - Build device tree blobs for enabled boards' endef diff --git a/scripts/Makefile b/scripts/Makefile index 61affa300d25..ece52ff20171 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -39,8 +39,7 @@ build_unifdef: $(obj)/unifdef subdir-$(CONFIG_MODVERSIONS) += genksyms subdir-y += mod subdir-$(CONFIG_SECURITY_SELINUX) += selinux -subdir-$(CONFIG_DTC) += dtc subdir-$(CONFIG_GDB_SCRIPTS) += gdb # Let clean descend into subdirs -subdir- += basic kconfig package gcc-plugins +subdir- += basic dtc kconfig package gcc-plugins diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 61e596650ed3..8fe4468f9bda 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -283,7 +283,7 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE quiet_cmd_dtc = DTC $@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ - $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ + $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ $(DTC) -O dtb -o $@ -b 0 \ $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ -d $(depfile).dtc.tmp $(dtc-tmp) ; \ diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile index 1c943e03eaf2..e535b457babb 100644 --- a/scripts/dtc/Makefile +++ b/scripts/dtc/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 # scripts/dtc makefile -hostprogs-y := dtc +hostprogs-$(CONFIG_DTC) := dtc always := $(hostprogs-y) dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \