BDI2000 and failed MMU translations

[Gessner, Matt]

Whooops, too soon.

OK, AFTER the first breakpoint, it then gets mad about
single stepping.

The MMU xlation fails for the next address.

Matt

> -----Original Message-----
> From: Dan Malek [mailto:dan at embeddededge.com]
> Sent: Wednesday, January 23, 2002 5:51 PM
> To: Gessner, Matt
> Cc: 'Linux PPC'
> Subject: Re: BDI2000 and failed MMU translations
>
>
> Gessner, Matt wrote:
>
> > It's straight 2_4.  I wasn't stopping at start_kernel though.
>
> You don't need to stop anywhere unless there are some breakpoints
> you want to set for early debug.
>
> > I don't have PTBASE set up.
>
> You need:
> 	MMU XLAT 0xc0000000
> 	PTBASE 0x000000f0
>
> The newer kernels initialize the page table pointers for the BDI2000,
> so ignore comments about stopping and setting values.  We went through
> several iterations of implementation, so anything written about how to
> do this manually is probably wrong :-).
>
> > ...... I'm going to
> > break at start kernel FIRST, then connect with BDI, then
> > see if I can look at my data.
>
> How do you break and then connect the BDI?  You need the BDI
> connected to set and trap the breakpoint.
>
> Have fun.
>
>
> 	-- Dan
>
>
>

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/