Merge branch 'cleanup/dts-subdirs' into next/arm64

Dependency for Juno support, from cleanup branch.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/Makefile

@@ -312,8 +312,12 @@ $(INSTALL_TARGETS):
 	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 
 PHONY += dtbs dtbs_install
-dtbs dtbs_install: prepare scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $@
+
+dtbs: prepare scripts
+	$(Q)$(MAKE) $(build)=$(boot)/dts
+
+dtbs_install:
+	$(Q)$(MAKE) $(dtbinst)=$(boot)/dts
 
 # We use MRPROPER_FILES and CLEAN_FILES now
 archclean:

arch/arm/boot/dts/Makefile

@@ -517,15 +517,7 @@ dtb-$(CONFIG_MACH_DOVE) += dove-cm-a510.dtb \
 	dove-dove-db.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt6589-aquaris5.dtb
 
-targets += dtbs dtbs_install
-targets += $(dtb-y)
 endif
 
-# *.dtb used to be generated in the directory above. Clean out the
-# old build results so people don't accidentally use them.
-dtbs: $(addprefix $(obj)/, $(dtb-y))
-	$(Q)rm -f $(obj)/../*.dtb
-
-clean-files := *.dtb
-
-dtbs_install: $(addsuffix _dtbinst_, $(dtb-y))
+always		:= $(dtb-y)
+clean-files	:= *.dtb

arch/arm64/Makefile

@@ -70,8 +70,13 @@ zinstall install: vmlinux
 %.dtb: scripts
 	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
 
-dtbs: scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts dtbs
+PHONY += dtbs dtbs_install
+
+dtbs: prepare scripts
+	$(Q)$(MAKE) $(build)=$(boot)/dts
+
+dtbs_install:
+	$(Q)$(MAKE) $(dtbinst)=$(boot)/dts
 
 PHONY += vdso_install
 vdso_install:
@@ -85,6 +90,7 @@ 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'

arch/arm64/boot/dts/Makefile

-dtb-$(CONFIG_ARCH_THUNDER) += thunder-88xx.dtb
-dtb-$(CONFIG_ARCH_VEXPRESS) += rtsm_ve-aemv8a.dtb foundation-v8.dtb
-dtb-$(CONFIG_ARCH_XGENE) += apm-mustang.dtb
+dts-dirs += apm
+dts-dirs += arm
+dts-dirs += cavium
 
-targets += dtbs
-targets += $(dtb-y)
-
-dtbs: $(addprefix $(obj)/, $(dtb-y))
-
-clean-files := *.dtb
+always		:= $(dtb-y)
+subdir-y	:= $(dts-dirs)
+clean-files	:= *.dtb

arch/arm64/boot/dts/apm/Makefile

+dtb-$(CONFIG_ARCH_XGENE) += apm-mustang.dtb
+
+always		:= $(dtb-y)
+subdir-y	:= $(dts-dirs)
+clean-files	:= *.dtb

arch/arm64/boot/dts/arm/Makefile

+dtb-$(CONFIG_ARCH_VEXPRESS) += foundation-v8.dtb
+dtb-$(CONFIG_ARCH_VEXPRESS) += rtsm_ve-aemv8a.dtb
+
+always		:= $(dtb-y)
+subdir-y	:= $(dts-dirs)
+clean-files	:= *.dtb

arch/arm64/boot/dts/cavium/Makefile

+dtb-$(CONFIG_ARCH_THUNDER) += thunder-88xx.dtb
+
+always		:= $(dtb-y)
+subdir-y	:= $(dts-dirs)
+clean-files	:= *.dtb

scripts/Kbuild.include

@@ -179,6 +179,12 @@ build := -f $(srctree)/scripts/Makefile.build obj
 # $(Q)$(MAKE) $(modbuiltin)=dir
 modbuiltin := -f $(srctree)/scripts/Makefile.modbuiltin obj
 
+###
+# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.dtbinst obj=
+# Usage:
+# $(Q)$(MAKE) $(dtbinst)=dir
+dtbinst := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.dtbinst obj
+
 # Prefix -I with $(srctree) if it is not an absolute path.
 # skip if -I has no parameter
 addtree = $(if $(patsubst -I%,%,$(1)), \

scripts/Makefile.dtbinst

+# ==========================================================================
+# Installing dtb files
+#
+# Installs all dtb files listed in $(dtb-y) either in the
+# INSTALL_DTBS_PATH directory or the default location:
+#
+#   $INSTALL_PATH/dtbs/$KERNELRELEASE
+#
+# Traverse through subdirectories listed in $(dts-dirs).
+# ==========================================================================
+
+src := $(obj)
+
+PHONY := __dtbs_install
+__dtbs_install:
+
+export dtbinst-root ?= $(obj)
+
+include include/config/auto.conf
+include scripts/Kbuild.include
+include $(srctree)/$(obj)/Makefile
+
+PHONY += __dtbs_install_prep
+__dtbs_install_prep:
+ifeq ("$(dtbinst-root)", "$(obj)")
+	$(Q)if [ -d $(INSTALL_DTBS_PATH).old ]; then rm -rf $(INSTALL_DTBS_PATH).old; fi
+	$(Q)if [ -d $(INSTALL_DTBS_PATH) ]; then mv $(INSTALL_DTBS_PATH) $(INSTALL_DTBS_PATH).old; fi
+	$(Q)mkdir -p $(INSTALL_DTBS_PATH)
+endif
+
+dtbinst-files	:= $(dtb-y)
+dtbinst-dirs	:= $(dts-dirs)
+
+# Helper targets for Installing DTBs into the boot directory
+quiet_cmd_dtb_install =	INSTALL $<
+      cmd_dtb_install =	mkdir -p $(2); cp $< $(2)
+
+install-dir = $(patsubst $(dtbinst-root)%,$(INSTALL_DTBS_PATH)%,$(obj))
+
+$(dtbinst-files) $(dtbinst-dirs): | __dtbs_install_prep
+
+$(dtbinst-files): %.dtb: $(obj)/%.dtb
+	$(call cmd,dtb_install,$(install-dir))
+
+$(dtbinst-dirs):
+	$(Q)$(MAKE) $(dtbinst)=$(obj)/$@
+
+PHONY += $(dtbinst-files) $(dtbinst-dirs)
+__dtbs_install: $(dtbinst-files) $(dtbinst-dirs)
+
+.PHONY: $(PHONY)

scripts/Makefile.lib

@@ -283,18 +283,6 @@ $(obj)/%.dtb: $(src)/%.dts FORCE
 
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 
-# Helper targets for Installing DTBs into the boot directory
-quiet_cmd_dtb_install =	INSTALL $<
-      cmd_dtb_install =	cp $< $(2)
-
-_dtbinst_pre_:
-	$(Q)if [ -d $(INSTALL_DTBS_PATH).old ]; then rm -rf $(INSTALL_DTBS_PATH).old; fi
-	$(Q)if [ -d $(INSTALL_DTBS_PATH) ]; then mv $(INSTALL_DTBS_PATH) $(INSTALL_DTBS_PATH).old; fi
-	$(Q)mkdir -p $(INSTALL_DTBS_PATH)
-
-%.dtb_dtbinst_: $(obj)/%.dtb _dtbinst_pre_
-	$(call cmd,dtb_install,$(INSTALL_DTBS_PATH))
-
 # Bzip2
 # ---------------------------------------------------------------------------