Commit e04018e8 authored by Grant Likely's avatar Grant Likely Committed by Josh Boyer
Browse files

[POWERPC] add target for building .dtb files 



Call dtc from the Makefile instead of the wrapper script so that the dt
blobs can be generated with a simple make invocation.

Using this patch allows board ports to trigger automatic building of .dtb
files by adding them to the image-y target list.

Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: default avatarJosh Boyer <jwboyer@linux.vnet.ibm.com>
parent 1e5ef43e

arch/powerpc/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -164,7 +164,7 @@ boot := arch/$(ARCH)/boot 
$(BOOT_TARGETS): vmlinux

	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)



bootwrapper_install:

bootwrapper_install %.dtb:

	$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)



define archhelp

arch/powerpc/boot/Makefile

+15 −11
Original line number Diff line number Diff line
@@ -287,11 +287,11 @@ $(obj)/zImage.%: vmlinux $(wrapperbits) 
	$(call if_changed,wrap,$*)



# dtbImage% - a dtbImage is a zImage with an embedded device tree blob

$(obj)/dtbImage.initrd.%: vmlinux $(wrapperbits) $(dtstree)/%.dts

	$(call if_changed,wrap,$*,$(dtstree)/$*.dts,,$(obj)/ramdisk.image.gz)

$(obj)/dtbImage.initrd.%: vmlinux $(wrapperbits) $(obj)/%.dtb

	$(call if_changed,wrap,$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)



$(obj)/dtbImage.%: vmlinux $(wrapperbits) $(dtstree)/%.dts

	$(call if_changed,wrap,$*,$(dtstree)/$*.dts)

$(obj)/dtbImage.%: vmlinux $(wrapperbits) $(obj)/%.dtb

	$(call if_changed,wrap,$*,,$(obj)/$*.dtb)



# This cannot be in the root of $(src) as the zImage rule always adds a $(obj)

# prefix
@@ -304,14 +304,18 @@ $(obj)/zImage.iseries: vmlinux 
$(obj)/uImage: vmlinux $(wrapperbits)

	$(call if_changed,wrap,uboot)



$(obj)/cuImage.%: vmlinux $(dtstree)/%.dts $(wrapperbits)

	$(call if_changed,wrap,cuboot-$*,$(dtstree)/$*.dts)

$(obj)/cuImage.%: vmlinux $(obj)/%.dtb $(wrapperbits)

	$(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb)



$(obj)/treeImage.initrd.%: vmlinux $(dtstree)/%.dts $(wrapperbits)

	$(call if_changed,wrap,treeboot-$*,$(dtstree)/$*.dts,,$(obj)/ramdisk.image.gz)

$(obj)/treeImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits)

	$(call if_changed,wrap,treeboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)



$(obj)/treeImage.%: vmlinux $(dtstree)/%.dts $(wrapperbits)

	$(call if_changed,wrap,treeboot-$*,$(dtstree)/$*.dts)

$(obj)/treeImage.%: vmlinux $(obj)/%.dtb $(wrapperbits)

	$(call if_changed,wrap,treeboot-$*,,$(obj)/$*.dtb)



# Rule to build device tree blobs

$(obj)/%.dtb: $(dtstree)/%.dts $(obj)/dtc

	$(obj)/dtc -O dtb -o $(obj)/$*.dtb -b 0 $(DTS_FLAGS) $(dtstree)/$*.dts



# If there isn't a platform selected then just strip the vmlinux.

ifeq (,$(image-y))
@@ -328,7 +332,7 @@ install: $(CONFIGURE) $(addprefix $(obj)/, $(image-y)) 


# anything not in $(targets)

clean-files += $(image-) $(initrd-) zImage zImage.initrd cuImage.* treeImage.* \

	otheros.bld

	otheros.bld *.dtb



# clean up files cached by wrapper

clean-kernel := vmlinux.strip vmlinux.bin

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