[U-Boot] u-boot hangs after detecting DDR3 RAM and Flash.

[prakash bedge]

Hi Stefan,

But, my DDR3 initialization seems to be completed and I am not getting any
error in DDR3 initialization.

Another issue I am facing that if I add 2 pritinf functions before or after
DDR initialization the DDR3 initialization code hangs in between
and if I remove the printf functions, everything is working fine and after
disabling the EE bit I am able to see the u-boot proopt
This is not desired and I am looking in that problem.

if I replace the printf whith udelay(5) then also I am facing same issue.

In BDI3000 debugger I am seeing that after set_timer(0) function in
cpu/ppc4xx/board.c when I execute next fucntion
/* Initialize from environment */
 if ((s = getenv ("loadaddr")) != NULL) { ... }
then u-boot hangs in between during the execution of getenv(..) function.
What may be the reason?

Which registers I should see to check the address of instruction which
causes exception?

Regards,
Prakash
On Wed, May 5, 2010 at 5:22 PM, Stefan Roese <sr at denx.de> wrote:

> On Wednesday 05 May 2010 13:48:05 prakash bedge wrote:
> > I commented he MSR_EE in interrupt_init function in
> cpu/ppc4xx/interrupts.c
> > to run the u-boot and to get u-boot prompt.
> >
> > when I executed "sleep 3 " command it doesn't reurns to prompt. It seems
> > that it hangs in while loop or hangs somewhere else.
> > what does it mean?
>
> That means, that the timer is not running at all. Since you disabled the
> interrupts in the MSR register.
>
> You need to solve the problem with the hanging trap, most likely resulting
> from the DDR3 setup code.
>
> Cheers,
> Stefan
>
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