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

[Wolfgang Denk]

Dear Scott Wood,

In message <4A550B66.1090506 at freescale.com> you wrote:
>
> Note that the overhead of 64-bit printf (assuming the 64-bit 
> divide/remainder functions in libgcc aren't pulled in for anything else) 
>   is 2524 bytes on powerpc (using GCC 4.3.2).  That's less than NFS, 
> which gets turned on by default (as was brought up recently). :-)

But compare the functionality...

> What if we were to invert the option (CONFIG_SYS_NO_64BIT_VSPRINTF) so 
> that it would only be disabled on boards at the intersection of tight 
> space constraints and a board maintainer who's pretty sure this board 
> doesn't need it?  There could also be some warning from printf() if %ll 
> is used when not supported, and/or it could still check for %ll and pop 
> a long long from the varargs but discard the high half.

And by default we would add CONFIG_SYS_NO_64BIT_VSPRINTF to all board
config files?

Best regards,

Wolfgang Denk

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