Re: [ECOS] 80312 hal support for Intel XScale board

[Jonathan Larmour <jlarmour at redhat dot com>]

Richard Wicks wrote:
> 
> On Tuesday 16 October 2001 05:01 am, Mark Salter wrote:
> > >>>>> Richard Wicks writes:
> > >
> > > Hello,
> > > I think I've found some bugs with the hal support with the Intel XScale
> > > board.
> >
> > ...
> >
> > > According to the documentation* of the 80312 chip, in section 6.8.5 this
> > > UNmasks the interrupt rather than masking it.  There is a similar problem
> > > with hal_interrupt_unmask.  In fact, I think nearly all calls to
> > > hal_interrupt_mask() actually unmask the interrupt and nearly all calls
> > > to hal_interrupt_unmask() actually mask the interrupt.
> >
> > Looks like you're right. The only interrupts that we've tested are the
> > ethernet and serial.

Richard, would you care to submit a patch (generated using cvs diff -u, and
with a ChangeLog entry to get your name in lights)? That's the clearest,
least ambiguous way to get a fix in!

> For your convenience, I've included a small piece of C code you can use to
> send a doorbell interrupt to the XScale board.  It's a Linux module that maps
> the ATU and then sends a doorbell interrupt on the FIQ# line to the 80200
> processor.

It's unlikely we'll have time to look to this level of detail
unfortunately.

Jifl
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