Kernel booting issues on a MPC8270 board

[annamaya]

I am sorry but I dont believe the "mfpvr" instruction
has anything to do with it. I thought removing it was
getting rid of the problem but I was wrong. The board
still gets reset when the very first instruction is
executed. I am stumped.

--- annamaya <annamaya at yahoo.com> wrote:

> I debugged this problem a little more and realized
> that the reset was happenning right after the
> execution of the first kernel instruction at
> 0x0000000c. The instruction at this location was
> "mfpvr r28". I traced this back to a snippet of code
> that was dealing with pipeline depth issues on the
> MPC8260. Once I commented this code out, more
> instructions were issued but the reboot happens
> elsewhere. I am not able to pin-point the location
> of
> the debug since my BDI fails to catch the reset when
> it happens. Can someone point me to the cause of
> this
> situation? Thanks in advance.
> 
> --- annamaya <annamaya at yahoo.com> wrote:
> 
> > I am trying to boot a mvista Linux Kernel ver.
> > 2.4.20
> > on  a MPC8270 board. I am using the embed_config()
> > in
> > zImage to pass the board info since the bootloader
> > is
> > not ppcboot. After the message, "Now booting the
> > kernel", the board just reboots, as if someone
> > yanked
> > the reset line. I have BDI hooked up but it
> doesn't
> > seem to catch the reset point in the code. And I
> am
> > unable to trace this to anything in the code. Any
> > suggestions? Thanks in advance.
> > 
> > 
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