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Re: How can I build redboot with no MMU? (8xx based)
- From: <xinumike-rtos at yahoo dot com>
- To: Gary Thomas <gary at mlbassoc dot com>, xinumike-rtos at yahoo dot com
- Cc: eCos Discussion <ecos-discuss at ecos dot sourceware dot org>
- Date: Wed, 11 May 2005 06:55:12 -0700 (PDT)
- Subject: Re: [ECOS] How can I build redboot with no MMU? (8xx based)
- Reply-to: xinumike-rtos at yahoo dot com
Gary and Everybody,
Where should I start to see printf's showing up?
Will this happen before the MMU?
I see the SMC enable happen, but have not seen
any data, but of course I crash when I enable
the mmu.
Thanks,
Mike
--- Gary Thomas <gary@mlbassoc.com> wrote:
> On Wed, 2005-05-11 at 06:26 -0700,
> xinumike-rtos@yahoo.com wrote:
> > I just can't get my board to function after the
> > MMU is enabled.
> > Is there a way to build redboot without the
> > MMU?
>
> This is not wise on the PowerPC.
>
> You should investigate why it's failing when you
> enable the MMU.
> Try putting some 'diag_printf()' messages in the
> function
> 'cyg_hal_map_memory' in
> hal/powerpc/mpc8xx/current/src/var_misc.c
>
> --
>
------------------------------------------------------------
> Gary Thomas | Consulting for the
> MLB Associates | Embedded world
>
------------------------------------------------------------
>
>
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