Date: Mon, 20 Sep 2004 20:11:37 +0200 From: Francois Tigeot <ftigeot@wolfpond.org> To: Bruno Ducrot <ducrot@poupinou.org> Cc: freebsd-amd64@freebsd.org Subject: Re: bios.h question Message-ID: <20040920181137.GA1004@aoi.wolfpond.org> In-Reply-To: <20040920170013.GQ16132@poupinou.org> References: <20040914150419.GA7191@aoi.wolfpond.org> <200409141543.13318.peter@wemm.org> <20040915063512.GA10104@aoi.wolfpond.org> <200409170907.18458.peter@wemm.org> <20040917190850.GA69926@aoi.wolfpond.org> <20040920170013.GQ16132@poupinou.org>
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On Mon, Sep 20, 2004 at 07:00:13PM +0200, Bruno Ducrot wrote: > On Fri, Sep 17, 2004 at 09:08:50PM +0200, Francois Tigeot wrote: > > > > > > Ahh - bios tables. That we can do. This is for a kernel component, > > > right? > > > > Right. The table is providing CPU frequency and voltage information > > corresponding to different power states. > > A kernel module could use it to scale system speed according to the > > average load... > > > > At least, it seems this is what this code does on i386: > > http://www.poupinou.org/cpufreq/bsd/powernow_k7/ > > I'm working on a powernow_k8 driver anyway since I need one. Nice to hear that. I'm curious: did you find any recent documentation ? All documents on Powernow! I could gather on AMD site were for the K6 family. -- Francois Tigeot
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