[U-Boot] [PATCH v3] mpc83xx: New board support SIMPC8313

[Kim Phillips]

On Fri, 21 Nov 2008 16:44:18 -0800 (PST)
Ron Madrid <ron_madrid at sbcglobal.net> wrote:

> In response to my own email:
> 
> > I did not see this when I built before submitting my patch.  It seems to build
> > fine using ELDK version 4.1.  I just tried building with 4.2 and am
> > seeing the errors that you described.  For some reason, the 4.2 build has
> > about 48 extra bytes to it, and is once again putting me over the 4K
> > bootstrap limit.  I'm going to look into getting the size down, but that's a
> > decent number of bytes to try to optimize out.
> 
> 
> I've been trying to trim down my nand_spl bootstrap so that it
> will be below the 4K limit allowed by the processor.  However
> this is proving to be very challenging.  I have noticed that there
> is a little over 100 (decimal) bytes that are being unused at the
> beginning of the resulting binary (after the HRCW and version
>  string).  Would it be possible to move some functions in start.S
> (mpc83xx) in front of this (see below) part of the code?
> 
>     . = EXC_OFF_SYS_RESET
> 
>     .globl    _start
> 
> This would allow for more board specific nand_spl boot code.
> Would something like this be allowed or am I barking up the
> wrong tree?

I'd rather we find stuff that can be ifdeffed out or moved elsewhere -
the moment we move something in there, someone will find the need to
enhance and grow whatever moved there.

what was the 4.2 toolchain doing differently than the 4.1 toolchain?
maybe that's an area worth looking into.

Kim