Merge remote-tracking branch 'robherring/for-next' into devicetree/next

Documentation/kbuild/makefiles.txt

@@ -1175,15 +1175,16 @@ When kbuild executes, the following steps are followed (roughly):
  in an init section in the image. Platform code *must* copy the
  blob to non-init memory prior to calling unflatten_device_tree().
 
- Example:
- #arch/x86/platform/ce4100/Makefile
- clean-files := *dtb.S
+ To use this command, simply add *.dtb into obj-y or targets, or make
+ some other target depend on %.dtb
 
-  DTC_FLAGS := -p 1024
-  obj-y += foo.dtb.o
+ A central rule exists to create $(obj)/%.dtb from $(src)/%.dts;
+ architecture Makefiles do no need to explicitly write out that rule.
 
- $(obj)/%.dtb: $(src)/%.dts
- $(call cmd,dtc)
+ Example:
+ targets += $(dtb-y)
+ clean-files += *.dtb
+ DTC_FLAGS ?= -p 1024
 
 --- 6.8 Custom kbuild commands
 

arch/arm/Makefile

@@ -292,10 +292,10 @@ zinstall uinstall install: vmlinux
  $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
 
 %.dtb: scripts
- $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+ $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
 
 dtbs: scripts
- $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+ $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
 
 # We use MRPROPER_FILES and CLEAN_FILES now
 archclean:

arch/arm/boot/Makefile

@@ -15,8 +15,6 @@ ifneq ($(MACHINE),)
 include $(srctree)/$(MACHINE)/Makefile.boot
 endif
 
-include $(srctree)/arch/arm/boot/dts/Makefile
-
 # Note: the following conditions must always be true:
 # ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET)
 # PARAMS_PHYS must be within 4MB of ZRELADDR
@@ -59,16 +57,6 @@ $(obj)/zImage: $(obj)/compressed/vmlinux FORCE
 
 endif
 
-targets += $(dtb-y)
-
-# Rule to build device tree blobs
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
- $(call if_changed_dep,dtc)
-
-$(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
-
-clean-files := *.dtb
-
 ifneq ($(LOADADDR),)
  UIMAGE_LOADADDR=$(LOADADDR)
 else

arch/arm/boot/dts/Makefile

@@ -104,4 +104,12 @@ dtb-$(CONFIG_ARCH_VT8500) += vt8500-bv07.dtb \
  wm8505-ref.dtb \
  wm8650-mid.dtb
 
+targets += dtbs
 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

arch/arm64/Makefile

@@ -41,20 +41,24 @@ libs-y := arch/arm64/lib/ $(libs-y)
 libs-y += $(LIBGCC)
 
 # Default target when executing plain make
-KBUILD_IMAGE := Image.gz
+KBUILD_IMAGE := Image.gz
+KBUILD_DTBS := dtbs
 
-all: $(KBUILD_IMAGE)
+all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
 
 boot := arch/arm64/boot
 
 Image Image.gz: vmlinux
- $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+ $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 
 zinstall install: vmlinux
- $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
+ $(Q)$(MAKE) $(build)=$(boot) $@
 
-%.dtb:
- $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
+%.dtb: scripts
+ $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
+
+dtbs: scripts
+ $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
 
 # We use MRPROPER_FILES and CLEAN_FILES now
 archclean:
@@ -63,6 +67,7 @@ archclean:
 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 ' install - Install uncompressed kernel'
  echo ' zinstall - Install compressed kernel'
  echo ' Install using (your) ~/bin/installkernel or'

arch/arm64/boot/Makefile

@@ -22,15 +22,10 @@ $(obj)/Image: vmlinux FORCE
 $(obj)/Image.gz: $(obj)/Image FORCE
  $(call if_changed,gzip)
 
-$(obj)/%.dtb: $(src)/dts/%.dts
- $(call cmd,dtc)
-
 install: $(obj)/Image
  $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
  $(obj)/Image System.map "$(INSTALL_PATH)"
 
 zinstall: $(obj)/Image.gz
  $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \
  $(obj)/Image.gz System.map "$(INSTALL_PATH)"
-
-clean-files += *.dtb

arch/arm64/boot/dts/.gitignore

@@ -0,0 +1 @@
+*.dtb

arch/arm64/boot/dts/Makefile

@@ -0,0 +1,5 @@
+targets += dtbs
+
+dtbs: $(addprefix $(obj)/, $(dtb-y))
+
+clean-files := *.dtb

arch/c6x/Makefile

@@ -41,7 +41,7 @@ DTB:=$(subst dtbImage.,,$(filter dtbImage.%, $(MAKECMDGOALS)))
 export DTB
 
 ifneq ($(DTB),)
-core-y += $(boot)/
+core-y += $(boot)/dts/
 endif
 
 # With make 3.82 we cannot mix normal and wildcard targets

arch/c6x/boot/Makefile

@@ -6,25 +6,5 @@ OBJCOPYFLAGS_vmlinux.bin := -O binary
 $(obj)/vmlinux.bin: vmlinux FORCE
  $(call if_changed,objcopy)
 
-DTC_FLAGS ?= -p 1024
-
-ifneq ($(DTB),)
-obj-y += linked_dtb.o
-endif
-
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
- $(call if_changed_dep,dtc)
-
-quiet_cmd_cp = CP $< $@$2
- cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
-
-# Generate builtin.dtb from $(DTB).dtb
-$(obj)/builtin.dtb: $(obj)/$(DTB).dtb
- $(call if_changed,cp)
-
-$(obj)/linked_dtb.o: $(obj)/builtin.dtb
-
 $(obj)/dtbImage.%: vmlinux
  $(call if_changed,objcopy)
-
-clean-files := $(obj)/*.dtb

arch/c6x/boot/dts/Makefile

@@ -0,0 +1,20 @@
+#
+# Makefile for device trees
+#
+
+DTC_FLAGS ?= -p 1024
+
+ifneq ($(DTB),)
+obj-y += linked_dtb.o
+endif
+
+quiet_cmd_cp = CP $< $@$2
+ cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
+
+# Generate builtin.dtb from $(DTB).dtb
+$(obj)/builtin.dtb: $(obj)/$(DTB).dtb
+ $(call if_changed,cp)
+
+$(obj)/linked_dtb.o: $(obj)/builtin.dtb
+
+clean-files := *.dtb

arch/c6x/boot/dts/linked_dtb.S

@@ -0,0 +1,2 @@
+.section __fdt_blob,"a"
+.incbin "arch/c6x/boot/dts/builtin.dtb"

arch/microblaze/Makefile

@@ -57,7 +57,7 @@ boot := arch/microblaze/boot
 DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))
 
 ifneq ($(DTB),)
- core-y += $(boot)/
+ core-y += $(boot)/dts/
 endif
 
 # defines filename extension depending memory management type

arch/microblaze/boot/Makefile

@@ -2,21 +2,10 @@
 # arch/microblaze/boot/Makefile
 #
 
-obj-y += linked_dtb.o
-
 targets := linux.bin linux.bin.gz simpleImage.%
 
 OBJCOPYFLAGS := -R .note -R .comment -R .note.gnu.build-id -O binary
 
-# Ensure system.dtb exists
-$(obj)/linked_dtb.o: $(obj)/system.dtb
-
-# Generate system.dtb from $(DTB).dtb
-ifneq ($(DTB),system)
-$(obj)/system.dtb: $(obj)/$(DTB).dtb
- $(call if_changed,cp)
-endif
-
 $(obj)/linux.bin: vmlinux FORCE
  $(call if_changed,objcopy)
  $(call if_changed,uimage)
@@ -45,10 +34,4 @@ $(obj)/simpleImage.%: vmlinux FORCE
  @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
 
 
-# Rule to build device tree blobs
-DTC_FLAGS := -p 1024
-
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
- $(call if_changed_dep,dtc)
-
-clean-files += *.dtb simpleImage.*.unstrip linux.bin.ub
+clean-files += simpleImage.*.unstrip linux.bin.ub

arch/microblaze/boot/dts/Makefile

@@ -0,0 +1,22 @@
+#
+# arch/microblaze/boot/Makefile
+#
+
+obj-y += linked_dtb.o
+
+# Ensure system.dtb exists
+$(obj)/linked_dtb.o: $(obj)/system.dtb
+
+# Generate system.dtb from $(DTB).dtb
+ifneq ($(DTB),system)
+$(obj)/system.dtb: $(obj)/$(DTB).dtb
+ $(call if_changed,cp)
+endif
+
+quiet_cmd_cp = CP $< $@$2
+ cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
+
+# Rule to build device tree blobs
+DTC_FLAGS := -p 1024
+
+clean-files += *.dtb

arch/microblaze/boot/dts/linked_dtb.S

@@ -0,0 +1,2 @@
+.section __fdt_blob,"a"
+.incbin "arch/microblaze/boot/dts/system.dtb"

arch/mips/cavium-octeon/Makefile

@@ -24,9 +24,6 @@ DTB_FILES = $(patsubst %.dts, %.dtb, $(DTS_FILES))
 
 obj-y += $(patsubst %.dts, %.dtb.o, $(DTS_FILES))
 
-$(obj)/%.dtb: $(src)/%.dts FORCE
- $(call if_changed_dep,dtc)
-
 # Let's keep the .dtb files around in case we want to look at them.
 .SECONDARY: $(addprefix $(obj)/, $(DTB_FILES))
 

arch/mips/lantiq/dts/Makefile

@@ -1,4 +1 @@
 obj-$(CONFIG_DT_EASY50712) := easy50712.dtb.o
-
-$(obj)/%.dtb: $(obj)/%.dts
- $(call if_changed,dtc)

arch/mips/netlogic/dts/Makefile

@@ -1,4 +1 @@
 obj-$(CONFIG_DT_XLP_EVP) := xlp_evp.dtb.o
-
-$(obj)/%.dtb: $(obj)/%.dts
- $(call if_changed,dtc)

arch/openrisc/Makefile

@@ -50,6 +50,6 @@ BUILTIN_DTB := y
 else
 BUILTIN_DTB := n
 endif
-core-$(BUILTIN_DTB) += arch/openrisc/boot/
+core-$(BUILTIN_DTB) += arch/openrisc/boot/dts/
 
 all: vmlinux

arch/openrisc/boot/Makefile → arch/openrisc/boot/dts/Makefile

@@ -1,5 +1,3 @@
-
-
 ifneq '$(CONFIG_OPENRISC_BUILTIN_DTB)' '""'
 BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_OPENRISC_BUILTIN_DTB)).dtb.o
 else
@@ -10,6 +8,3 @@ obj-y += $(BUILTIN_DTB)
 clean-files := *.dtb.S
 
 #DTC_FLAGS ?= -p 1024
-
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
- $(call if_changed_dep,dtc)

scripts/Makefile.lib

@@ -266,6 +266,9 @@ $(obj)/%.dtb.S: $(obj)/%.dtb
 quiet_cmd_dtc = DTC $@
 cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile) $<
 
+$(obj)/%.dtb: $(src)/%.dts FORCE
+ $(call if_changed_dep,dtc)
+
 # Bzip2
 # ---------------------------------------------------------------------------