From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 29 Jan 2001 09:41:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 29 Jan 2001 09:41:24 -0500 Received: from [194.213.32.137] ([194.213.32.137]:3332 "EHLO bug.ucw.cz") by vger.kernel.org with ESMTP id ; Mon, 29 Jan 2001 09:41:05 -0500 Message-ID: <20010128233425.E1300@bug.ucw.cz> Date: Sun, 28 Jan 2001 23:34:25 +0100 From: Pavel Machek To: "H. Peter Anvin" , Rogier Wolff Cc: linux-kernel@vger.kernel.org Subject: Re: Linux Post codes during runtime, possibly OT In-Reply-To: <200101281012.LAA04278@cave.bitwizard.nl> <3A73F1EB.B6F69A93@transmeta.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93i In-Reply-To: <3A73F1EB.B6F69A93@transmeta.com>; from H. Peter Anvin on Sun, Jan 28, 2001 at 02:18:19AM -0800 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > > Ok. I've thought about it some more, but I don't care enough about > > this issue to do the painstaking legwork: I don't have one of those > > POST-code indicators on port 0x80. > > > > I've made the "pause" in outb_p just a few (*) ns slower, because it > > now loads a variable before outputting the value to port 0x80. As the > > whole idea about this is "pausing", making it a bit slower shouldn't > > matter too much. I've tested it: It compiles, it boots. > > > > I'm not too familar with the syntax of the "asm" statement. So I may > > illegally be modifying the AX register. I don't care enough about this > > to figure it out right now. > > > > It is; you'd have to specify "eax" as a clobber value, and that is > undesirable. > > And you're still overwriting the POST value written by the BIOS. So save value from bios at initial boot ;-). Pavel -- I'm pavel@ucw.cz. "In my country we have almost anarchy and I don't care." Panos Katsaloulis describing me w.r.t. patents at discuss@linmodems.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/