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Date:      Mon, 13 Aug 2007 16:44:02 +0200
From:      =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To:        Takeharu KATO <takeharu1219@ybb.ne.jp>
Cc:        freebsd-current@freebsd.org, Mike Tancsa <mike@sentex.net>
Subject:   Re: ichwd for ICH8
Message-ID:  <86r6m74hql.fsf@ds4.des.no>
In-Reply-To: <46C061CC.2040300@ybb.ne.jp> (Takeharu KATO's message of "Mon\, 13 Aug 2007 22\:51\:08 %2B0900")
References:  <46337B06.9080102@ybb.ne.jp> <46338C0F.9000608@ybb.ne.jp> <4633932A.8080602@ybb.ne.jp> <86tzuxni1b.fsf@dwp.des.no> <200707061723.l66HNYSe037055@lava.sentex.ca> <86ir86hqhc.fsf@ds4.des.no> <200707262035.l6QKZtnd067391@lava.sentex.ca> <86abtihk6h.fsf@ds4.des.no> <200707262338.l6QNcL1T068284@lava.sentex.ca> <86hcnq900e.fsf@ds4.des.no> <200707270038.l6R0cLNV068524@lava.sentex.ca> <8664462p1b.fsf@ds4.des.no> <200707271037.l6RAbc2Q071412@lava.sentex.ca> <86fy2v2x9e.fsf@ds4.des.no> <200708071529.l77FTpsO040934@lava.sentex.ca> <46C00EB4.1030707@ybb.ne.jp> <86y7gf6ddw.fsf@ds4.des.no> <46C061CC.2040300@ybb.ne.jp>

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Takeharu KATO <takeharu1219@ybb.ne.jp> writes:
> BTW, why do you use ich version number to switch WDT operation
> (In particular,  NOREBOOT operation)?
> As far as I think, it is more preferable to use TCO version instead of
> ich version number to this purpose.

There was nothing in the documentation about a "TCO version", and I
didn't want to use arbitrary numbers (1 and 2).  It would probably have
been better to simply use an enum.

> Because 6300ESB is a kind of ICH5 with TCO version 2, isn't it?

It's an ICH5-equivalent chipset for mobile and embedded systems, and it
has what you would call "TCO version 1" (8-bit TCO_TMR at TCOBASE+01H):

http://www.intel.com/design/intarch/datashts/30064103.pdf

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no



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