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Subject: RE: PROM and hardware help for cougar/linux
Date: Tue, 6 Mar 2007 10:49:54 -0700
Message-ID: <BB375AF679D4A34E9CA8DFA650E2B04E02B74A03@onstor-exch02.onstor.net>
In-Reply-To: <20070306093907.7af16961@ripper.onstor.net>
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Thread-Topic: PROM and hardware help for cougar/linux
Thread-Index: AcdgFlfIPavc3jTRSVarkQN+TaUE/AAADF6Q
References: <20070306093907.7af16961@ripper.onstor.net>
From: "Brian Stark" <brian.stark@onstor.com>
To: "Andy Sharp" <andy.sharp@onstor.com>,
	"Warren Gale" <warren.gale@onstor.com>

Andy,

The alternative consoles are already wired up on nearly every system in
the eng lab.  As for PROM support, I believe this is already in there,
and we can look into making a PROM that uses the Philips UART instead of
the Marvell UART.  Let's talk some more this afternoon at the Cougar
meeting so that we're on the same page with this.

As for the PROM console routines from the kernel, the PROM is
decompressed into a region in the lower 48MB of memory.  Unless that
region is overwritten by the kernel (which it shouldn't be), the
routines should be there for you to access.


Brian


> -----Original Message-----
> From: Andy Sharp=20
> Sent: Tuesday, March 06, 2007 9:39 AM
> To: Brian Stark; Warren Gale
> Subject: PROM and hardware help for cougar/linux
>=20
> Hi Guys,
>=20
> After a week of basically no progress, I need to bust out=20
> with some bolder moves.  The two I'm thinking of are both in=20
> the console area.
> Namely, get a bobcat with the alternative consoles wired up,=20
> and get some PROM support for that.
>=20
> PROM question: does the PROM support prom_console vectors? =20
> Put another way, is there a pair of PROM console input/output=20
> routines that I can access from the kernel?  Supposedly there=20
> is or can be such a thing with PMON, but trying to use it=20
> without knowing for sure that it's there might be a bit too=20
> much fumbling in the dark.
>=20
> Cheers,
>=20
> a
>=20
