[U-Boot-Users] MPC8xx boards broken by commit some weeks ago

[Stefan Roese]

HI Martin,

On Tuesday 17 July 2007, Martin Krause wrote:
> > > @@ -235,8 +235,10 @@
> > >         stw     r22,_CTR(r21);  \
> > >         mfspr   r20,XER;        \
> > >         stw     r20,_XER(r21);  \
> > > -       mfspr   r22,SRR0;       \
> > > -       mfspr   r23,SRR1;       \
> > > +       mfspr   r20,DEAR;       \  <--
> > > +       stw     r20,_DAR(r21);  \  <--
> >
> > We are currently working on a fix for this. Sorry for the
>
> Great! I tried to figure out what's going on myself, but get
> stuck because I'm no ppc assembler expert. It seems, that the
> "DEAR" special purpose register is not available on the MPC885D
> (and other MPC8xx processors?)?

Yep, that's the case and as it seems the cause of this problem.

Best regards,
Stefan

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