[U-Boot-Users] What are IBAT and DBAT?

[Shawn]

> > When trying to port u-boot to a MPC8245 card, I'm not sure what IBAT
> and
> > DBAT register work for. For example, sl8245.h defines 4 regions of
> IBAT:
> 
> If you have to ask such a question this is  an  indication  that  you
> don't  have  the  qualification  to  port  U-Boot.  When dealing with
> software on such a low level as the boot loader you need  a  thorough
> understanding  of  the  hardware  and it's internal workings. Without
> this you are lost.

:(. You didn't answer the questions though. I'm learning from practice. I
don't recall I touched any IBAT/DBAT configuration when I ported ppcboot
to a MPC855 board. So configuring them seems new to me.

Thank other guys here for giving me hints and references.

-Shawn.


		
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