[OpenBIOS] About udelay
lsorense at csclub.uwaterloo.ca
Sat May 4 00:11:39 CEST 2013
On Fri, May 03, 2013 at 11:07:24PM +0100, Mark Cave-Ayland wrote:
> Fortunately the use of the "volatile" quantifier in the patch makes
> sure that this doesn't happen. Both myself and Artyom have tested
> the patch and it works for both of us, so I'm reasonably confident.
Oh yes of course. I missed that detail. Oops.
> The reason that the udelay() implementation is a trivial one is
> because we need something simple in order to get a working OpenBIOS
> (and hopefully 1.1 release) into QEMU git master in time for feature
> freeze on Monday. If anyone else would like to investigate using
> timers for udelay() on SPARC32/64, I'd be very happy to accept
> patches from next week onwards.
Makes sense now.
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