[U-Boot-Users] Booting Board Without BDI

[Knowledge Seeker]

At the moment, if bdi is not plugged in, board does not boot (see no
activity on serial console).

I will read reset section of MPC8xx User's Manual and thanks for the
tip, will relocate flash.

Abu Sana

--- Wolfgang Denk <wd at denx.de> wrote:
> In message <20040723015214.75503.qmail at web50509.mail.yahoo.com> you
> wrote:
> > I have 852T with fads board. In the current setup, after power on
> > processor starts to execute from 0xff000100 and flash is located
> at
> > address 0x02000000 and first executable byte of u-boot is at
> > 0x02000100.
> 
> This is definitely not a good memory map, especially not in case 
> you
> want to use it on Linux later.
> 
> > Well, in order to start executing u-boot code from flash without
> bdi
> > attached, what needs to be done and where.
> 
> Detach BDI?
> 
> > I have some confusion in my mind. I know that higher order bits
> will
> > be ignored (by settings of br0 & or0 registers). Even in this case
> > changes should be made in u-boot or someplace else. If this is
> u-boot,
> 
> What sort of changes should be made? Who says so?
> 
> > than its kind of checken and egg problem. How will it know before
> > reading u-boot settings for br0 & or0.
> 
> Read the MPC8xx User's Manual section about how reset works.
> 
> 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
> The existence of god implies a violation of causality.
> 
> 
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