From owner-freebsd-arm@FreeBSD.ORG Thu Jan 31 15:58:15 2013 Return-Path: Delivered-To: freebsd-arm@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 487BD8B9; Thu, 31 Jan 2013 15:58:15 +0000 (UTC) (envelope-from gnn@neville-neil.com) Received: from vps.hungerhost.com (vps.hungerhost.com [216.38.53.176]) by mx1.freebsd.org (Postfix) with ESMTP id 0DA12F8F; Thu, 31 Jan 2013 15:58:14 +0000 (UTC) Received: from [38.105.238.108] (port=64751 helo=[10.7.1.235]) by vps.hungerhost.com with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.80) (envelope-from ) id 1U0wWk-0005of-3E; Thu, 31 Jan 2013 10:58:14 -0500 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 6.2 \(1499\)) Subject: Re: SD card -image- for the beaglebone From: George Neville-Neil In-Reply-To: <1359646574.93359.327.camel@revolution.hippie.lan> Date: Thu, 31 Jan 2013 10:58:14 -0500 Content-Transfer-Encoding: quoted-printable Message-Id: References: <510A4F5B.7000407@g7iii.net> <1359646574.93359.327.camel@revolution.hippie.lan> To: Ian Lepore X-Mailer: Apple Mail (2.1499) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - vps.hungerhost.com X-AntiAbuse: Original Domain - freebsd.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - neville-neil.com X-Get-Message-Sender-Via: vps.hungerhost.com: authenticated_id: gnn@neville-neil.com Cc: freebsd-arm@FreeBSD.org X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jan 2013 15:58:15 -0000 On Jan 31, 2013, at 10:36 , Ian Lepore wrote: > On Thu, 2013-01-31 at 11:02 +0000, Iain Young wrote: >> Hi Folks, >>=20 >> I have just taken delivery of a few Beaglebones that I am intending = to >> do some NTP Work. With FreeBSD having one of the better reputations >> with regards to Time and PPS etc, I thought I would install FreeBSD = on >> at least one of them. >>=20 >> Unfortunately, all of the guides I've found all assume you have a >> FreeBSD box already running. Unfortunately, I don't, and nor do I = have >> a spare x86 box to do so. >>=20 >> Does anyone have an *image* of a base install for a 4 Gig microSD >> card that I can download ? Preferably with ssh and dhcp installed >> (yes, I know about blowing away the keys), as that would avoid having >> to rely on the console. >>=20 >> Quite happy to rebuild the kernel and world afterwards (yes, I know I >> need an 8 Gig SD card), but it's just this bootstrapping problem = thats >> an issue... >>=20 >=20 > So you're interested in a PPS driver for BeagleBone? That would be = fun > to play with, I wonder what the BB's timer hardware looks like? It'd = be > easy enough to do with a gpio interrupt I suspect, but the timing geek > in me can't resist going for the nanosecond-accurate measurements when > possible, even if it is kind of pointless for millisecond-accurate = NTP. >=20 Ah, but PTPd would be very happy with nanosecond accuracy. The biggest problem I see in PTPd on something like a BeagleBone is the network interface. We need to get that cleaned up and then see how much jitter = it has. Best, George