From: Petr Vandrovec <vandrove@vc.cvut.cz>
To: M?ns Rullg?rd <mru@kth.se>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: floppy motor spins when floppy module not installed
Date: Fri, 12 Dec 2003 17:41:47 +0100 [thread overview]
Message-ID: <20031212164147.GA10758@vana.vc.cvut.cz> (raw)
In-Reply-To: <yw1xad5yxapq.fsf@kth.se>
On Fri, Dec 12, 2003 at 05:27:45PM +0100, M?ns Rullg?rd wrote:
> Petr Vandrovec <vandrove@vc.cvut.cz> writes:
>
> > On Fri, Dec 12, 2003 at 04:33:57PM +0100, M?ns Rullg?rd wrote:
> >>
> >> I'm running 2.6.0-test11 on a machine with modular floppy driver,
> >> without any spinning motors. I think it boots from floppy before HD,
> >> but I'm not certain (can't check right now).
> >
> > Maybe because you run patched LILO which works around this 2.6.x
>
> GRUB, actually. Does it mess with the floppy drive?
AFAIK yes:
NEWS:
New in 0.5 - 1998-08-20, Erich Boleyn:
* GRUB now shuts off the floppy before transferring control to any
other programs/modules/loaders. (chain-loading doesn't matter here,
just loading 32-bit modules/kernels)
stage2/asm.S:
/*
* stop_floppy()
*
* Stops the floppy drive from spinning, so that other software is
* jumped to with a known state.
*/
ENTRY(stop_floppy)
movw $0x3F2, %dx
xorb %al, %al
outb %al, %dx
ret
Petr Vandrovec
next prev parent reply other threads:[~2003-12-12 16:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-12 13:57 Dale Mellor
2003-12-12 14:18 ` Måns Rullgård
2003-12-12 15:04 ` Richard B. Johnson
2003-12-12 15:11 ` Måns Rullgård
2003-12-12 15:20 ` Richard B. Johnson
2003-12-12 15:33 ` Måns Rullgård
2003-12-12 16:05 ` Petr Vandrovec
2003-12-12 16:27 ` Måns Rullgård
2003-12-12 16:41 ` Petr Vandrovec [this message]
2003-12-12 16:00 ` Matthew Kirkwood
2003-12-12 19:28 ` John Bradford
2003-12-12 19:47 ` Richard B. Johnson
2003-12-13 6:18 ` Joshua Schmidlkofer
2003-12-15 14:37 ` Richard B. Johnson
2003-12-13 10:40 ` John Bradford
2003-12-15 14:50 ` Richard B. Johnson
2003-12-15 20:24 ` John Bradford
2003-12-13 13:18 ` Helge Hafting
2003-12-13 16:42 ` Joshua Schmidlkofer
2003-12-12 14:59 ` Richard B. Johnson
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