[U-Boot] [PATCH v4 1/2] vf610twr: Add default environment in line with other Freescale boards

[Andy Voltz]

Hi Fabio,

On Thu, Jun 27, 2013 at 10:14:40PM -0400, Fabio Estevam wrote:
> On Thu, Jun 27, 2013 at 11:12 PM, Otavio Salvador
> <otavio at ossystems.com.br> wrote:
> 
> >> Just curious: why do we need to pass mem=128M?
> >
> > Board fails to boot otherwise ... Andy did try it so he can explain it
> > with more detail.
> 
> Hmm...Is DDR being incorrectly configured then? We need to understand
> why this happens.
> 
> Andy, can you comment on this, please?

I haven't looked closely at the memory setup, but you are likely correct. 

When I boot our kernel on twr-vf610 without mem, nothing is seen after
'Starting kernel...'

For comparison I booted linux-next on the twr-vf610 without the mem argument,
and it works. I haven't gotten the board to mount an RFS over net or mmc, but I
suspect that is a kernel configuration problem.

It probably makes the most sense to just drop mem arg from the environment, and
then we can patch our kernel to fix the memory setup issue.

Regards
-- 
Andy Voltz
Timesys Corporation