[U-Boot] [PATCH 2/2 RESEND] SPL: Allow user to disable CPU support library

[Scott Wood <scottwood@freescale.com>]

On 09/15/2011 06:17 PM, Marek Vasut wrote:
> On Friday, September 16, 2011 12:57:44 AM Scott Wood wrote:
>> On 09/11/2011 11:03 PM, Marek Vasut wrote:
>>> Introduce CONFIG_SPL_NO_CPU_SUPPORT_CODE to avoid compiling the CPU
>>> support library. This can be useful on some setups.
>>>
>>> Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
>>> Cc: Stefano Babic <sbabic@denx.de>
>>> Cc: Wolfgang Denk <wd@denx.de>
>>> Cc: Detlev Zundel <dzu@denx.de>
>>> Cc: Chander Kashyap <chander.kashyap@linaro.org>
>>
>> But you didn't CC these...
> 
> git send-email should handle those ?

I'm not too familiar with git send-email, but they're not in the CC list
of the actual e-mail.

>>> +# In case we want to avoid the CPU support code, we need to define this:
>>> +ifndef	CONFIG_SPL_NO_CPU_SUPPORT_CODE
>>> +SPL_CPU_SUPPORT_CODE := y
>>> +endif
>>
>> SPL should ideally contain nothing by default.  Have options that say
>> what you do want to pull in, not what you don't want.
> 
> You usually DO want to pull this in (because it contains vectoring code, really 
> basic lowlevel init etc), there are only border cases where you do not want to 
> do that and use your own.

Sorry, I was a bit confused by seeing lib$(CPU), thought at first you
were trying to pull in stuff like arch/$(ARCH)/lib.

Still, this seems hackish.  Shouldn't the control be on specific files
that you include, not directories?

-Scott