[U-Boot-Users] Debugging U-Boot on 440GP
Wolfgang Denk
wd at denx.de
Wed Nov 26 15:51:03 CET 2003
Dear Brian,
in message <AKELKEJDICNMBGAOOBLAGEPACHAA.bpadalino at perigee.com> you wrote:
>
> Lastly, I was thinking about this last night -- is the BDI too invasive in
> trying to figure out if U-Boot will boot properly? It sets up the MMU and
> TLB by itself through it's init sequence, and I _think_ I am setting them up
> properly in U-Boot, but I am not sure. From what I saw in the code in
I have often recommended to use just a MINIMAL inti script for the
BDI. Don't touch the memory controller. Just configure the absolute
necessary minimum (things like disabling a watchdog etc.).
> I guess I am just at a loss as to what these exception vectors mean anyway.
Then you will have to dig through a few books about the PowerPC architecture.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
An optimist believes we live in the best world possible; a pessimist
fears this is true.
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