On Mon, 31 Mar 2008 11:52:02 -0500
Jerone Young <[EMAIL PROTECTED]> wrote:
> > void ppc4xx_idle(void)
> >
> > > +{
> > > + unsigned long msr_save;
> > > +
> > > + /* set wait state MSR */
> > > + local_irq_enable();
> > > + msr_save = mfmsr();
> > > + mtmsr(msr_save|MSR_WE);
> >
> > Why don't you |MSR_WE|MSR_EE at the same time?
>
> You technically can do this. But the question is do all 4xx cpus use
> MSR_EE to enable interrupts? I can assume they do (from what I know),
They do for enabling external interrupts of normal priority. MSR_CE
might also be used/needed if someone has the watchdog enabled or has an
external device with the UIC pin mapped as a CE.
josh
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