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Date:      Tue, 26 Nov 2002 02:57:32 +0100
From:      Marcin Dalecki <mdcki@gmx.net>
To:        Dan Nelson <dnelson@allantgroup.com>
Cc:        Terry Lambert <tlambert2@mindspring.com>, Kris Kennaway <kris@obsecurity.org>, Robert Watson <rwatson@FreeBSD.ORG>, Mikhail Teterin <mi+mx@aldan.algebra.com>, current@FreeBSD.ORG
Subject:   Re: -current unusable after a crash
Message-ID:  <3DE2D50C.4090201@gmx.net>
References:  <200211250959.39594.mi%2Bmx@aldan.algebra.com> <Pine.NEB.3.96L.1021125102358.33619A-100000@fledge.watson.org> <20021125172445.GA8953@rot13.obsecurity.org> <3DE29DE6.CDD96F3F@mindspring.com> <3DE2AF65.9000502@gmx.net> <3DE2B740.4206206E@mindspring.com> <20021126001003.GA8636@dan.emsphone.com>

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Dan Nelson wrote:
> In the last episode (Nov 25), Terry Lambert said:
> 
>>Marcin Dalecki wrote:
>>
>>>>I don't think this is really possible.
>>>>
>>>>I went looking for a generic "application use" CMOS are for this
>>>>sort of thing a while back, and I was unable to find one.
>>>
>>>Well you should please take a look at the "fast boot" option of
>>>moderately modern BIOS-es. Somthing along those lines went right
>>>now in to the linux kernel. Seems pretty adequate to me, since you
>>>would be even able to controll it through the BIOS setup...
>>
>>Is there documentation available for this anywhere?  The BIOS vendor
>>documentation, not the Linux source code.
> 
> 
> http://www.microsoft.com/hwdev/resources/specs/simp_bios.asp
> http://www.microsoft.com/hwdev/resources/specs/simp_boot.asp 
> 
> is the best I could find; you'll need a Word doc viewer. 

OpenOffice works fine on my FreeBSD setup ;-).

> It's mainly
> geared toward detecting boot failure rather than abnormal shutdowns,
> though. What we need is a matching "Simple Shutdown Flag" variable.

Personally I was not that much thinking about the particular problem at
hand. I think the fast boot BIOS preference should be simply exported
by the kernel as a sysconf erm. sorry sysctl constant value to allow
for easy checking by userland. One could imagine that a lot
of other preferences could be controlled by it as well. Like
for example starting dhclient dettached from the current console, just
to give the user a login prompt as fast as possible and so on...

-- 
	Marcin Dalecki


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