defconfig for v850, please

defconfig for v850, please

[Jan Dittmer]

Miles,

while you're at it patching v850 here and there, could you please
also provide a resonable defconfig for v850, so that
$ make ARCH=v850 CROSS_COMPILE=... defconfig
$ make ARCH=v850 CROSS_COMPILE=...

works? Then my cross-compile tests at http://l4x.org/k could
probably provide somewhat meanigful results for this arch?!

Thanks,

-- 
Jan

Re: defconfig for v850, please

[Miles Bader]

2005/7/20, Jan Dittmer <jdittmer@ppp0.net>:
> while you're at it patching v850 here and there, could you please
> also provide a resonable defconfig for v850, so that

I must admit it's because I've never quite understood how the
defconfig stuff works... I'll look into it I guess...

-miles

-- 
Do not taunt Happy Fun Ball.

Re: defconfig for v850, please

[Jan Dittmer]

Miles Bader wrote:
> 2005/7/20, Jan Dittmer <jdittmer@ppp0.net>:
> 
>>while you're at it patching v850 here and there, could you please
>>also provide a resonable defconfig for v850, so that
> 
> 
> I must admit it's because I've never quite understood how the
> defconfig stuff works... I'll look into it I guess...

I think you just need to provide a file called 'defconfig' in
arch/v850/

Thanks,

-- 
Jan

Re: defconfig for v850, please

[Miles Bader]

2005/7/20, Jan Dittmer <jdittmer@ppp0.net>:
> > I must admit it's because I've never quite understood how the
> > defconfig stuff works... I'll look into it I guess...
> 
> I think you just need to provide a file called 'defconfig' in
> arch/v850/

Hmmm...

Some archs seem to provide defconfigs for various different platforms,
which seems nice, and there seems to be some sort of framework for
doing this, but ...

-Miles
-- 
Do not taunt Happy Fun Ball.

Re: defconfig for v850, please

[Jan Dittmer]

Miles Bader wrote:
> 2005/7/20, Jan Dittmer <jdittmer@ppp0.net>:
> 
>>>I must admit it's because I've never quite understood how the
>>>defconfig stuff works... I'll look into it I guess...
>>
>>I think you just need to provide a file called 'defconfig' in
>>arch/v850/
> 
> 
> Hmmm...
> 
> Some archs seem to provide defconfigs for various different platforms,
> which seems nice, and there seems to be some sort of framework for
> doing this, but ...

dropping them in arch/v850/configs/{yourwildplatform}_defconfig
seems to be the way most archs do this (ia64, arm).
They also provide a common defconfig file in arch/v850/ .

HTH,

-- 
Jan

Re: defconfig for v850, please

[Paul Mundt]

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On Wed, Jul 20, 2005 at 07:02:53PM +0900, Miles Bader wrote:
> Some archs seem to provide defconfigs for various different platforms,
> which seems nice, and there seems to be some sort of framework for
> doing this, but ...
> 
For most of the architectures aimed at embedded systems, having an
arch/foo/defconfig makes no sense. The basic "framework" is to have
arch/foo/configs and place all of your board-specific defconfigs in there
(as boardname_defconfig -- the reason for this is that you get free make
targets of the same name which copy the defconfig over, see 'make help').

If you have a particular board that you can assume will be kept
reasonably up-to-date, you can set KBUILD_DEFCONFIG in your Makefile to
set the default config to use by name, and then you can forego having an
arch/foo/defconfig entirely (you can look at sh and some of the other
architectures to see this being done).

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Re: defconfig for v850, please

[Jan Dittmer]

Paul Mundt wrote:
> On Wed, Jul 20, 2005 at 07:02:53PM +0900, Miles Bader wrote:
> 
>>Some archs seem to provide defconfigs for various different platforms,
>>which seems nice, and there seems to be some sort of framework for
>>doing this, but ...
>>
> 
> For most of the architectures aimed at embedded systems, having an
> arch/foo/defconfig makes no sense. The basic "framework" is to have

Still, for basic compile testing and testing patches on other
architectures it would be nice, when the patch writer can test his/her
patch with a simple defconfig, without knowing a common platform for
this target arch.
So please include a defconfig with a reasonable common set of CONFIG_*
options. It's about testing the core of the architecure not about
random driver failures.

> arch/foo/configs and place all of your board-specific defconfigs in there
> (as boardname_defconfig -- the reason for this is that you get free make
> targets of the same name which copy the defconfig over, see 'make help').
> 
> If you have a particular board that you can assume will be kept
> reasonably up-to-date, you can set KBUILD_DEFCONFIG in your Makefile to
> set the default config to use by name, and then you can forego having an
> arch/foo/defconfig entirely (you can look at sh and some of the other
> architectures to see this being done).

arm is another one which uses this style, ia64 for example uses configs/*
and defconfig. But on arm and sh `make defconfig` works contrary to v850.

Thanks,

-- 
Jan

Re: defconfig for v850, please

[Paul Mundt]

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On Wed, Jul 20, 2005 at 03:01:56PM +0200, Jan Dittmer wrote:
> Still, for basic compile testing and testing patches on other
> architectures it would be nice, when the patch writer can test his/her
> patch with a simple defconfig, without knowing a common platform for
> this target arch.

This is what KBUILD_DEFCONFIG is for. A general purpose defconfig that
has no hope of being kept up-to-date is worse than useless.

> arm is another one which uses this style, ia64 for example uses configs/*
> and defconfig. But on arm and sh `make defconfig` works contrary to v850.
> 
That's because it looks at KBUILD_DEFCONFIG.. We absolutely do not want
to have an arch/foo/defconfig for most of these architectures, and I
doubt that v850 is an exception. Note that sh also does not have one.

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