From owner-freebsd-arch Fri Feb 14 0:49:18 2003 Delivered-To: freebsd-arch@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2682237B401 for ; Fri, 14 Feb 2003 00:49:17 -0800 (PST) Received: from day.anthologeek.net (day.anthologeek.net [213.91.4.139]) by mx1.FreeBSD.org (Postfix) with ESMTP id 384F543F85 for ; Fri, 14 Feb 2003 00:49:16 -0800 (PST) (envelope-from sw@anthologeek.net) Received: by day.anthologeek.net (Postfix, from userid 1000) id 416DA171A2; Fri, 14 Feb 2003 09:46:35 +0100 (CET) Date: Fri, 14 Feb 2003 09:46:35 +0100 From: Sameh Ghane To: Hidetoshi Shimokawa Cc: freebsd-arch@freebsd.org Subject: Re: You may want to have FireWire.... Message-ID: <20030214084635.GB87002@anthologeek.net> References: <20030209193737.D91611DEAB@www.fastmail.fm> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4i X-PGP-Keys: 0x1289F00D: Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Le (On) Wed, Feb 12, 2003 at 05:24:54PM +0900, Hidetoshi Shimokawa ecrivit (wrote): > Do you think this useful? I was waiting so much for something like this ! I finally found a laptop with a serial port built-in, but it's a really good idea as nowadays they're rare. > I wrote this driver(dcons(4)) and utility(fwchat(8)) for a replacement > of the serial console. This framework exploits physical access > faculty of the IEEE1394 OHCI chip(fwochi(4)). This means that you > cannot access this console until the OHCI is initialized on target > system but once it's initialized, there is no need of OS support to > do transactions on the FireWire bus until next bus reset occurs. This > enables us to use this console as DDB/GDB port too. By analogy with > pty(4), dcons(4) acts like a slave device and fwchat(8) acts like a > master device, but they are on different machines and interact via > FireWire. Please note dcons(4) is device(FireWire)-independent by > itself. (And almost plathome independent) Humm, this won't allow people to grab boot messages before a freeze/hang/panic at boot time then ? Thank you for this feature ! Cheers, -- Sameh To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message