i.MX consolidation patches

[Sascha Hauer]

On Wed, Jun 01, 2011 at 03:24:06PM +0100, Russell King - ARM Linux wrote:
> On Wed, Jun 01, 2011 at 04:18:47PM +0200, Sascha Hauer wrote:
> > diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
> > index 9128fdd..e3b6f02 100644
> > --- a/arch/arm/boot/Makefile
> > +++ b/arch/arm/boot/Makefile
> > @@ -59,6 +59,11 @@ $(obj)/zImage:	$(obj)/compressed/vmlinux FORCE
> >  
> >  endif
> >  
> > +ifeq ($(CONFIG_ARM_PATCH_PHYS_VIRT),y)
> > +$(obj)/uImage: $(obj)/zImage FORCE
> > +	@echo 'building uImages is incompatible with CONFIG_ARM_PATCH_PHYS_VIRT'
> > +	@false
> 
> It may be better to drop the zImage dependency too, so that folk don't get
> the message at the end of an otherwise successful kernel build - they may
> decide to turn p2v patching off which would result in a rebuild.

It's not that easy. We have this in arch/arm/Makefile:

zImage Image xipImage bootpImage uImage: vmlinux
	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@

So arch/arm/boot/Makefile gets evaluated after a successful build. We
have to make the test in arch/arm/Makefile if we want to catch this
earlier.

> 
> Or it could suggest the mkimage command which should be run, but with
> <LOAD-ADDRESS> inserted into it at the appropriate point - iow something
> like:
> 
>   mkimage -A arm -O linux -T kernel -C none \
> 	-a <LOAD-ADDRESS> -e <START-ADDRESS> \
> 	-n 'Linux-$(KERNELRELEASE)' -d arch/arm/boot/zImage uImage.<PLATFORM>

Ok, it's a good idea to give the user a hint what to do.

Sascha

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