kbuild: consolidate Devicetree dtb build rules
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 <will.deacon@arm.com> Acked-by: Paul Burton <paul.burton@mips.com> Acked-by: Ley Foon Tan <ley.foon.tan@intel.com> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> 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 <robh@kernel.org>
This commit is contained in:
Rob Herring
parent
be7cd2df1d
commit
37c8a5fafa
37
Makefile
37
Makefile
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@ -1071,7 +1071,7 @@ include/config/kernel.release: $(srctree)/Makefile FORCE
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# Carefully list dependencies so we do not try to build scripts twice
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# in parallel
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PHONY += scripts
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scripts: scripts_basic asm-generic gcc-plugins $(autoksyms_h)
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scripts: scripts_basic scripts_dtc asm-generic gcc-plugins $(autoksyms_h)
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$(Q)$(MAKE) $(build)=$(@)
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# Things we need to do before we recursively start building the kernel
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@ -1215,6 +1215,35 @@ kselftest-merge:
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$(srctree)/tools/testing/selftests/*/config
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+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
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# ---------------------------------------------------------------------------
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# Devicetree files
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ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),)
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dtstree := arch/$(SRCARCH)/boot/dts
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endif
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ifneq ($(dtstree),)
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%.dtb: prepare3 scripts_dtc
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$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
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PHONY += dtbs dtbs_install
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dtbs: prepare3 scripts_dtc
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$(Q)$(MAKE) $(build)=$(dtstree)
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dtbs_install:
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$(Q)$(MAKE) $(dtbinst)=$(dtstree)
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ifdef CONFIG_OF_EARLY_FLATTREE
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all: dtbs
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endif
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endif
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PHONY += scripts_dtc
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scripts_dtc: scripts_basic
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$(Q)$(MAKE) $(build)=scripts/dtc
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# ---------------------------------------------------------------------------
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# Modules
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@ -1424,6 +1453,12 @@ help:
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@echo ' kselftest-merge - Merge all the config dependencies of kselftest to existing'
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@echo ' .config.'
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@echo ''
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@$(if $(dtstree), \
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echo 'Devicetree:'; \
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echo '* dtbs - Build device tree blobs for enabled boards'; \
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echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'; \
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echo '')
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@echo 'Userspace tools targets:'
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@echo ' use "make tools/help"'
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@echo ' or "cd tools; make help"'
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@ -132,11 +132,5 @@ boot_targets += uImage uImage.bin uImage.gz
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$(boot_targets): vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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%.dtb %.dtb.S %.dtb.o: scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
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dtbs: scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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@ -307,12 +307,7 @@ else
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KBUILD_IMAGE := $(boot)/zImage
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endif
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# Build the DT binary blobs if we have OF configured
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ifeq ($(CONFIG_USE_OF),y)
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KBUILD_DTBS := dtbs
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endif
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all: $(notdir $(KBUILD_IMAGE)) $(KBUILD_DTBS)
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all: $(notdir $(KBUILD_IMAGE))
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archheaders:
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@ -339,17 +334,6 @@ $(BOOT_TARGETS): vmlinux
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$(INSTALL_TARGETS):
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$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
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%.dtb: | scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
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PHONY += dtbs dtbs_install
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dtbs: prepare scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts
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dtbs_install:
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$(Q)$(MAKE) $(dtbinst)=$(boot)/dts
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PHONY += vdso_install
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vdso_install:
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ifeq ($(CONFIG_VDSO),y)
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@ -371,8 +355,6 @@ define archhelp
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echo ' uImage - U-Boot wrapped zImage'
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echo ' bootpImage - Combined zImage and initial RAM disk'
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echo ' (supply initrd image via make variable INITRD=<path>)'
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echo '* dtbs - Build device tree blobs for enabled boards'
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echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
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echo ' install - Install uncompressed kernel'
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echo ' zinstall - Install compressed kernel'
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echo ' uinstall - Install U-Boot wrapped compressed kernel'
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@ -113,9 +113,8 @@ core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
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# Default target when executing plain make
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boot := arch/arm64/boot
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KBUILD_IMAGE := $(boot)/Image.gz
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KBUILD_DTBS := dtbs
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all: Image.gz $(KBUILD_DTBS)
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all: Image.gz
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Image: vmlinux
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@ -127,17 +126,6 @@ Image.%: Image
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zinstall install:
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$(Q)$(MAKE) $(build)=$(boot) $@
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%.dtb: scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
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PHONY += dtbs dtbs_install
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dtbs: prepare scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts
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dtbs_install:
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$(Q)$(MAKE) $(dtbinst)=$(boot)/dts
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PHONY += vdso_install
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vdso_install:
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$(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
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@ -145,7 +133,6 @@ vdso_install:
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# We use MRPROPER_FILES and CLEAN_FILES now
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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$(Q)$(MAKE) $(clean)=$(boot)/dts
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# We need to generate vdso-offsets.h before compiling certain files in kernel/.
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# In order to do that, we should use the archprepare target, but we can't since
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@ -160,8 +147,6 @@ vdso_prepare: prepare0
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define archhelp
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echo '* Image.gz - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
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echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
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echo '* dtbs - Build device tree blobs for enabled boards'
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echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
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echo ' install - Install uncompressed kernel'
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echo ' zinstall - Install compressed kernel'
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echo ' Install using (your) ~/bin/installkernel or'
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@ -40,9 +40,7 @@ boot := arch/$(ARCH)/boot
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DTB:=$(subst dtbImage.,,$(filter dtbImage.%, $(MAKECMDGOALS)))
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export DTB
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ifneq ($(DTB),)
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core-y += $(boot)/dts/
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endif
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# With make 3.82 we cannot mix normal and wildcard targets
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@ -31,21 +31,12 @@ CROSS_COMPILE := h8300-unknown-linux-
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endif
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core-y += arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/
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ifneq '$(CONFIG_H8300_BUILTIN_DTB)' '""'
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core-y += arch/h8300/boot/dts/
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endif
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core-y += arch/$(ARCH)/boot/dts/
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libs-y += arch/$(ARCH)/lib/
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boot := arch/h8300/boot
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%.dtb %.dtb.S %.dtb.o: | scripts
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$(Q)$(MAKE) $(build)=arch/h8300/boot/dts arch/h8300/boot/dts/$@
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PHONY += dtbs
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dtbs: scripts
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$(Q)$(MAKE) $(build)=arch/h8300/boot/dts
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archmrproper:
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archclean:
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@ -65,9 +65,7 @@ boot := arch/microblaze/boot
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# Are we making a simpleImage.<boardname> target? If so, crack out the boardname
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DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
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ifneq ($(DTB),)
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core-y += $(boot)/dts/
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endif
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core-y += $(boot)/dts/
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# defines filename extension depending memory management type
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ifeq ($(CONFIG_MMU),)
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@ -1,6 +1,7 @@
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# SPDX-License-Identifier: GPL-2.0
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#
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ifneq ($(DTB),)
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obj-y += linked_dtb.o
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# Ensure system.dtb exists
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@ -11,6 +12,7 @@ ifneq ($(DTB),system)
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$(obj)/system.dtb: $(obj)/$(DTB).dtb
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$(call if_changed,cp)
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endif
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endif
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quiet_cmd_cp = CP $< $@$2
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cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
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@ -407,18 +407,7 @@ endif
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CLEAN_FILES += vmlinux.32 vmlinux.64
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# device-trees
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core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
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%.dtb %.dtb.S %.dtb.o: | scripts
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$(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
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PHONY += dtbs
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dtbs: scripts
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$(Q)$(MAKE) $(build)=arch/mips/boot/dts
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PHONY += dtbs_install
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dtbs_install:
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$(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
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core-y += arch/mips/boot/dts/
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archprepare:
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ifdef CONFIG_MIPS32_N32
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@ -461,8 +450,6 @@ define archhelp
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echo ' uImage.lzma - U-Boot image (lzma)'
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echo ' uImage.lzo - U-Boot image (lzo)'
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echo ' uzImage.bin - U-Boot image (self-extracting)'
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echo ' dtbs - Device-tree blobs for enabled boards'
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echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
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echo
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echo ' These will be default as appropriate for a configured platform.'
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echo
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@ -43,7 +43,7 @@ CHECKFLAGS += -D__NDS32_EB__
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endif
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boot := arch/nds32/boot
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core-$(BUILTIN_DTB) += $(boot)/dts/
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core-y += $(boot)/dts/
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.PHONY: FORCE
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@ -56,12 +56,6 @@ all: vmImage
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archclean:
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$(Q)$(MAKE) $(clean)=$(nios2-boot)
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%.dtb %.dtb.S %.dtb.o: | scripts
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$(Q)$(MAKE) $(build)=$(nios2-boot)/dts $(nios2-boot)/dts/$@
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dtbs:
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$(Q)$(MAKE) $(build)=$(nios2-boot)/dts
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$(BOOT_TARGETS): vmlinux
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$(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
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@ -74,5 +68,4 @@ define archhelp
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echo ' (your) ~/bin/$(INSTALLKERNEL) or'
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echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
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echo ' install to $$(INSTALL_PATH)'
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echo ' dtbs - Build device tree blobs for enabled boards'
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endef
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@ -31,9 +31,5 @@ $(obj)/zImage: $(obj)/compressed/vmlinux FORCE
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$(obj)/compressed/vmlinux: $(obj)/vmlinux.gz FORCE
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$(Q)$(MAKE) $(build)=$(obj)/compressed $@
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targets += $(dtb-y)
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$(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
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install:
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sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
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@ -293,9 +293,6 @@ $(BOOT_TARGETS2): vmlinux
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bootwrapper_install:
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$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
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%.dtb: scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts $(patsubst %,$(boot)/dts/%,$@)
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# Used to create 'merged defconfigs'
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# To use it $(call) it with the first argument as the base defconfig
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# and the second argument as a space separated list of .config files to merge,
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@ -84,28 +84,18 @@ LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
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head-y := arch/xtensa/kernel/head.o
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core-y += arch/xtensa/kernel/ arch/xtensa/mm/
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core-y += $(buildvar) $(buildplf)
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core-y += arch/xtensa/boot/dts/
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libs-y += arch/xtensa/lib/ $(LIBGCC)
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drivers-$(CONFIG_OPROFILE) += arch/xtensa/oprofile/
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ifneq ($(CONFIG_BUILTIN_DTB),"")
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core-$(CONFIG_OF) += arch/xtensa/boot/dts/
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endif
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boot := arch/xtensa/boot
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all Image zImage uImage: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $@
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%.dtb:
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$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
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dtbs: scripts
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$(Q)$(MAKE) $(build)=$(boot)/dts
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define archhelp
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@echo '* Image - Kernel ELF image with reset vector'
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@echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
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@echo '* uImage - U-Boot wrapped image'
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@echo ' dtbs - Build device tree blobs for enabled boards'
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endef
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@ -39,8 +39,7 @@ build_unifdef: $(obj)/unifdef
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subdir-$(CONFIG_MODVERSIONS) += genksyms
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subdir-y += mod
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subdir-$(CONFIG_SECURITY_SELINUX) += selinux
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subdir-$(CONFIG_DTC) += dtc
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subdir-$(CONFIG_GDB_SCRIPTS) += gdb
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# Let clean descend into subdirs
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subdir- += basic kconfig package gcc-plugins
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subdir- += basic dtc kconfig package gcc-plugins
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@ -283,7 +283,7 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE
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quiet_cmd_dtc = DTC $@
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cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
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$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
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$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
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$(DTC) -O dtb -o $@ -b 0 \
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$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
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-d $(depfile).dtc.tmp $(dtc-tmp) ; \
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@ -1,7 +1,7 @@
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# SPDX-License-Identifier: GPL-2.0
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# scripts/dtc makefile
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hostprogs-y := dtc
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hostprogs-$(CONFIG_DTC) := dtc
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always := $(hostprogs-y)
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dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
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