[coreboot] Holding the s2895 in reset powers off the machine

Myles Watson mylesgw at gmail.com
Wed Jul 8 00:50:55 CEST 2009

On Tue, Jul 7, 2009 at 4:46 PM, Peter Stuge <peter at stuge.se> wrote:

> Myles Watson wrote:
> > > Just for my interest, but why does someone need to power on a
> > > system while holding the reset button?
> >
> > In this case it is to allow my FPGA time to initialize (or for me
> > to reprogram it) before the Opteron tries to set up HyperTransport
> > communication with it.
> For an ugly hack<tm> maybe it would work to pulse the reset.

Maybe.  I'd have to use a signal generator, though.  HyperTransport
initialization is pretty fast.

> Do the two boards have the same chipset?

Yes, they're both nvidia ck804 + amd 8131.  They have different superIOs,
though.  The soft_reset and hard_reset code is in the ck804 code.

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