From owner-freebsd-arm@FreeBSD.ORG Thu Feb 21 17:01:52 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 17DD3459 for ; Thu, 21 Feb 2013 17:01:52 +0000 (UTC) (envelope-from imp@bsdimp.com) Received: from mail-gg0-x22a.google.com (gg-in-x022a.1e100.net [IPv6:2607:f8b0:4002:c02::22a]) by mx1.freebsd.org (Postfix) with ESMTP id CF8DE721 for ; Thu, 21 Feb 2013 17:01:51 +0000 (UTC) Received: by mail-gg0-f170.google.com with SMTP id k4so1255429ggn.15 for ; Thu, 21 Feb 2013 09:01:51 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:sender:subject:mime-version:content-type:from :in-reply-to:date:cc:content-transfer-encoding:message-id:references :to:x-mailer:x-gm-message-state; bh=kcu70eVOsLEgVc7wW86xmI+np1Lh3fLuULMR8uFNE9M=; b=dsqosO3NBMQbg8dKQWrnovwRwue+VHrnjIxPYOfIkPUGbQelYH5fLIHcRaIkiSQxmU ChTjR3AllQOMLkttlnf20DyiXMHrQRbqO11pCaW6k7Xet3RufyCkKg5r3UFbcjnncYYF MAIvZfqiaTTFKIMI4iW3g1FctXJcEH0+I67OnuU+eNMVQ7yYR2U3PZjtt5BHihHyxidx 1PaimtiZGcGzeh7u9q59hJnJehfbkgMHZrVVzlw1w5audNwhTmXSsJA2p1FIF3DZM5qv 8wRhzdQsD3/B7nBmcFdbOX0X07kRyf5jX0NZ6soHEPD6pjPKomHAfw7iM6YoXleHro5W XrUQ== X-Received: by 10.101.165.18 with SMTP id s18mr13779495ano.49.1361466111191; Thu, 21 Feb 2013 09:01:51 -0800 (PST) Received: from monkey-bot.int.fusionio.com ([209.117.142.2]) by mx.google.com with ESMTPS id n4sm45195929ank.1.2013.02.21.09.01.49 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 21 Feb 2013 09:01:50 -0800 (PST) Sender: Warner Losh Subject: Re: The Next BeagleBone Better & Faster for Less! Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=windows-1252 From: Warner Losh In-Reply-To: Date: Thu, 21 Feb 2013 10:01:47 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: <5B57B232-3DEE-42A4-9623-58E7D75291B9@bsdimp.com> References: <5125A73F.10802@ceetonetechnology.com> <20130221011346.3c376117@ivory.wynn.com> <48679DB0-7A2B-4617-BAA3-30C21F3CD61B@bsdimp.com> <1361458105.1185.19.camel@revolution.hippie.lan> <1361459858.1185.25.camel@revolution.hippie.lan> To: Tim Kientzle X-Mailer: Apple Mail (2.1085) X-Gm-Message-State: ALoCoQmbeilyhgxVhzu89lYbp+FRvAximbazuWFuA6WQ69E92H7j5ohg4EfQhCMcIql9Qzd1QVdg Cc: george@ceetonetechnology.com, freebsd-arm@freebsd.org, Brett Wynkoop , Ian Lepore 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, 21 Feb 2013 17:01:52 -0000 On Feb 21, 2013, at 9:58 AM, Tim Kientzle wrote: >=20 > On Feb 21, 2013, at 7:17 AM, Ian Lepore wrote: >=20 >> On Thu, 2013-02-21 at 07:58 -0700, Warner Losh wrote: >>> On Feb 21, 2013, at 7:48 AM, Ian Lepore wrote: >>>=20 >>>> On Wed, 2013-02-20 at 23:49 -0700, Warner Losh wrote: >>>>> On Feb 20, 2013, at 11:13 PM, Brett Wynkoop wrote: >>>>>=20 >>>>>> On Wed, 20 Feb 2013 23:49:03 -0500 >>>>>> George Rosamond wrote: >>>>>>=20 >>>>>>> On 02/20/13 23:27, Alie Tan wrote: >>>>>>>> Just got a news about new Beaglebone: >>>>>>>>=20 >>>>>>>> http://beagleboard.org/unzipped/ >>>>>>>=20 >>>>>>> Wow. Although personally, I could do without the HDMI. >>>>>>>=20 >>>>>>> It would be ideal there was a stock FBSD image for them to = provide for >>>>>>> purchasers... as in official on their www site as an alternative = to >>>>>>> Linux. >>>>>>>=20 >>>>>>> g >>>>>>=20 >>>>>> Greeting- >>>>>>=20 >>>>>> We need working USB support to contribute that to their site. >>>>>>=20 >>>>>> Is this new bone going to be the same as the old bone, but with = video, >>>>>> in other words will current kernels run or will the hard core = kernel >>>>>> folks have to rework things? >>>>>=20 >>>>> We'll likely have to rework thing, at least if we want to run out = of flash on the card. it has a new flash chip that has micron markings = on it. Sure would be nice to know what, exactly, that chip is=85 >=20 > I haven't found what SoC the new BeagleBone is > using, but the AM3359 used on the original BeagleBone > does support hardware ECC in the memory controller. >=20 > "Section 7.1.1.1 GPMC (General Purpose Memory Controller) Features > =85 > =95 Up to 16-bit ECC support for NAND flash using BCH code (t=3D4, 8 > or 16) or Hamming code for 8-bit or 16-bit NAND-flash, organized > with page size of 512 bytes, 1K bytes, or more." >=20 > There is also an "Error Location Module" documented in Section 7.4 > of the TRM which seems to be the component that actually > implements the ECC coding and works with the GPMC. >=20 > Definitely a chunk of work to integrate, but it doesn't appear > to require that we implement software ECC. Software BCH is very slow in comparison to hardware.. Warner