AlphaStation 200 NVRAM Problem
Maciej W. Rozycki
macro at linux-mips.org
Mon Apr 25 08:28:30 CDT 2016
On Sun, 24 Apr 2016, Maciej W. Rozycki wrote:
> > The thing
> > I am struggling with at the moment is getting sys$crmpsc_pfn_64 to work so I
> > can use C to test the NVRAM. I seem to have a problem with the service
> > writing back the address and length, but I don't yet know why.
> That's beyond my abilities I'm afraid, can't help.
Ah, BTW, a general note: make sure you request an uncached mapping, if
your interface has such control, mark your pointers `volatile' and use
appropriate synchronisation barriers between accesses.
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