[U-Boot] [PATCH] ppc4xx: Enable support for 64bit printf on all PPC4xx variants

[Jerry Van Baren <gerald.vanbaren@ge.com>]

Stefan Roese wrote:
> On Thursday 09 July 2009 14:24:49 Jerry Van Baren wrote:
>>> All this would increase the code size for those boards not supporting the
>>> 64bit printf format. Not sure by how much, but I suggest to just fix the
>>> problem by supporting this format correctly instead of adding new code to
>>> print some warnings here.
>>>
>>> Best regards,
>>> Stefan
>> That is what Scott is trying to do, but fixing 64bit printf causes a
>> 2K++ increase in size to the boards that don't currently support 64bit
>> printf (some of which are broken due to the error).  Wolfgang is
>> resisting that.
>>
>> Adding code to print a warning and handle the varargs properly will
>> probably be less than 100 bytes.  It looks like this is the compromise
>> Wolfgang favors.
> 
> I doubt that this could be done in less than 100 bytes. A descriptive error 
> message string alone will probably be around >= 60 chars. But I know this is 
> nitpicking.

Agreed.  FWIIW, I wasn't assuming a /descriptive/ error message.  I was 
assuming printf would simply print the format string, e.g. "%lld", 
rather than a possibly erroneous value.  Another alternative would be to 
do the spreadsheet idiom and print hashes "########".

> I'm still voting for adding this 2k and doing it correctly on all boards. With 
> the option to disable this 64bit support (as Scott suggested) on boards with 
> very tight resources.

Me too.  <shrug>

> Best regards,
> Stefan

Thanks,
gvb