[U-Boot-Users] MPC83xx - previous patch to set MBAR

Liu Dave-r63238
2007-08-02T02:14:31Z

> > The end result simply adds a line to set MBAR to match IMMRBAR.
> >
> > lis r3, CFG_IMMRBAR at h
> > ori r3, r3, CFG_IMMRBAR at l
> > stw r3, IMMRBAR(r4)
> > + mtspr MBAR, r3
> >
> > Are these patches routinely added to the mainstream u-boot code?
> >
> > Is there any reason why this fix is not a good idea?
> >
> does setting MBAR really fix anything?
>
> MBAR doesn't live up to its name. It's a general-purpose scratch
> register - the hardware doesn't do anything with it. So, wrt

Kim is right.

MBAR setting is added by two years ago, it is not really fix anything.

I set the MBAR to be easier to use the CodeWarriror. The CodeWarrior
must set the MBAR first, then it will be able to access the IMMR.

Dave