linux-kernel - Re: [PATCH 4/5] of/powerpc: Move build to use generic dts->dtb rule

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Message-ID: <20101117060653.GI12813@angua.secretlab.ca>
Date:	Tue, 16 Nov 2010 23:06:53 -0700
From:	Grant Likely <grant.likely@...retlab.ca>
To:	dirk.brandewie@...il.com
Cc:	devicetree-discuss@...ts.ozlabs.org, linux-arch@...r.kernel.org,
	linux-kbuild@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, sodaville@...utronix.de,
	microblaze-uclinux@...e.uq.edu.au, arjan@...ux.intel.com
Subject: Re: [PATCH 4/5] of/powerpc: Move build to use generic dts->dtb rule

On Tue, Nov 16, 2010 at 02:41:39PM -0800, dirk.brandewie@...il.com wrote:
> From: Dirk Brandewie <dirk.brandewie@...il.com>
> 
> This patch changes arch/powerpc/boot/Makefile to use the generic
> rule build the device tree blobs in scripts/Makefile.lib
> 
> Signed-off-by: Dirk Brandewie <dirk.brandewie@...il.com>
> ---
>  arch/powerpc/boot/Makefile |    7 -------
>  1 files changed, 0 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
> index fae8192..d90c674 100644
> --- a/arch/powerpc/boot/Makefile
> +++ b/arch/powerpc/boot/Makefile
> @@ -147,8 +147,6 @@ targets		+= $(patsubst $(obj)/%,%,$(obj-boot) wrapper.a)
>  extra-y		:= $(obj)/wrapper.a $(obj-plat) $(obj)/empty.o \
>  		   $(obj)/zImage.lds $(obj)/zImage.coff.lds $(obj)/zImage.ps3.lds
>  
> -dtstree		:= $(srctree)/$(src)/dts
> -
>  wrapper		:=$(srctree)/$(src)/wrapper
>  wrapperbits	:= $(extra-y) $(addprefix $(obj)/,addnote hack-coff mktree) \
>  			$(wrapper) FORCE
> @@ -331,11 +329,6 @@ $(obj)/treeImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits)
>  $(obj)/treeImage.%: vmlinux $(obj)/%.dtb $(wrapperbits)
>  	$(call if_changed,wrap,treeboot-$*,,$(obj)/$*.dtb)
>  
> -# Rule to build device tree blobs
> -DTC = $(objtree)/scripts/dtc/dtc
> -
> -$(obj)/%.dtb: $(dtstree)/%.dts
> -	$(DTC) -O dtb -o $(obj)/$*.dtb -b 0 $(DTS_FLAGS) $(dtstree)/$*.dts

This patch needs to modify the rules that have %.dtb dependencies to
go looking in arch/powerpc/boot/dts instead of arch/powerpc/boot
because the rule change will change where .dtb files get generated.

Also, this patch and patch 5 need to be merged with patch 1 so that
the series remains bisectable.

g.

>  
>  # If there isn't a platform selected then just strip the vmlinux.
>  ifeq (,$(image-y))
> -- 
> 1.7.2.3
> 
> _______________________________________________
> devicetree-discuss mailing list
> devicetree-discuss@...ts.ozlabs.org
> https://lists.ozlabs.org/listinfo/devicetree-discuss
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