From owner-freebsd-stable@FreeBSD.ORG Fri Mar 27 01:04:46 2009 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 43B971065674 for ; Fri, 27 Mar 2009 01:04:46 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from cain.gsoft.com.au (cain.gsoft.com.au [203.31.81.10]) by mx1.freebsd.org (Postfix) with ESMTP id A7F348FC17 for ; Fri, 27 Mar 2009 01:04:45 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from inchoate.localnet (Inchoate.gsoft.com.au [203.31.81.30]) (authenticated bits=0) by cain.gsoft.com.au (8.13.8/8.13.8) with ESMTP id n2R14drr092530 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 27 Mar 2009 11:34:39 +1030 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" To: freebsd-stable@freebsd.org Date: Fri, 27 Mar 2009 11:34:28 +1030 User-Agent: KMail/1.10.4 (Linux/2.6.27-11-generic; KDE/4.1.4; i686; ; ) References: <20090326130634.GA36270@owl.midgard.homeip.net> <49CB8FAC.4080505@icyb.net.ua> In-Reply-To: <49CB8FAC.4080505@icyb.net.ua> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1388573.p1CdP6n8rO"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200903271134.37209.doconnor@gsoft.com.au> X-Spam-Score: -3.977 () ALL_TRUSTED,BAYES_00 X-Scanned-By: MIMEDefang 2.63 on 203.31.81.10 Cc: Ronald Klop , Andriy Gapon Subject: Re: remote debug over usb vs. old serial cable? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Mar 2009 01:04:46 -0000 --nextPart1388573.p1CdP6n8rO Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Friday 27 March 2009 00:52:36 Andriy Gapon wrote: > > USB won't work for that purpose. It requires far too much kernel suppo= rt > > to be useful after a panic. > > Erik, > in fact, there is a special USB (EHCI) mode for such purposes: > http://www.coreboot.org/EHCI_Debug_Port That's pretty neat :) The dongle is pretty expensive relative to the cost of a Firewire card thou= gh. > But that requires some special HW in addition to SW support which our > doesn't have. > > BTW, Ronald, it is possible that you might have a serial header on > motherboard which is not connected to any traditional port. You could also purchase a Firewire PCI (or PCIe) card, they aren't very=20 expensive. =2D-=20 Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C --nextPart1388573.p1CdP6n8rO Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iD8DBQBJzCYe5ZPcIHs/zowRAvfbAJsGC8qLv8P2EHKblGj5HGqbNVvyPwCfYvc7 clSIAeMlu7vLAkgFG34uM48= =hLUj -----END PGP SIGNATURE----- --nextPart1388573.p1CdP6n8rO--