Date: Thu, 31 Jan 2013 10:58:14 -0500 From: George Neville-Neil <gnn@neville-neil.com> To: Ian Lepore <ian@FreeBSD.org> Cc: freebsd-arm@FreeBSD.org Subject: Re: SD card -image- for the beaglebone Message-ID: <D5C01DCF-E9B5-46CE-80E9-4EC5DBEC014B@neville-neil.com> In-Reply-To: <1359646574.93359.327.camel@revolution.hippie.lan> References: <510A4F5B.7000407@g7iii.net> <1359646574.93359.327.camel@revolution.hippie.lan>
next in thread | previous in thread | raw e-mail | index | archive | help
On Jan 31, 2013, at 10:36 , Ian Lepore <ian@FreeBSD.org> 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?D5C01DCF-E9B5-46CE-80E9-4EC5DBEC014B>