From owner-freebsd-arm@FreeBSD.ORG Mon Mar 8 14:24:16 2010 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 362A81065674 for ; Mon, 8 Mar 2010 14:24:16 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from raven.bwct.de (raven.bwct.de [85.159.14.73]) by mx1.freebsd.org (Postfix) with ESMTP id B18DE8FC14 for ; Mon, 8 Mar 2010 14:24:15 +0000 (UTC) Received: from mail.cicely.de ([10.1.1.37]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id o28EODEV012770 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 8 Mar 2010 15:24:14 +0100 (CET) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (cicely7.cicely.de [10.1.1.9]) by mail.cicely.de (8.14.3/8.14.3) with ESMTP id o28EO7BG020872 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 8 Mar 2010 15:24:07 +0100 (CET) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (localhost [127.0.0.1]) by cicely7.cicely.de (8.14.2/8.14.2) with ESMTP id o28EO7Fw017824; Mon, 8 Mar 2010 15:24:07 +0100 (CET) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.14.2/8.14.2/Submit) id o28EO7Ix017823; Mon, 8 Mar 2010 15:24:07 +0100 (CET) (envelope-from ticso) Date: Mon, 8 Mar 2010 15:24:07 +0100 From: Bernd Walter To: lists@walkertc.com Message-ID: <20100308142407.GY11192@cicely7.cicely.de> References: <000201cabe71$a8f830a0$fae891e0$@com> <6c36ec371003080428p54206f8t9356c999675c0933@mail.gmail.com> <000c01cabec4$f8758800$e9609800$@com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000c01cabec4$f8758800$e9609800$@com> X-Operating-System: FreeBSD cicely7.cicely.de 7.0-STABLE i386 User-Agent: Mutt/1.5.11 X-Spam-Status: No, score=-4.4 required=5.0 tests=ALL_TRUSTED=-1.8, AWL=0.001, BAYES_00=-2.599 autolearn=ham version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on spamd.cicely.de Cc: freebsd-arm@freebsd.org Subject: Re: Smallest ARM Device for FreeBSD X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Mar 2010 14:24:16 -0000 On Mon, Mar 08, 2010 at 08:40:52AM -0500, lists@walkertc.com wrote: > This will be a minimal system that really only needs 2 USB or serial inputs > and network connectivity. It will act as a "sensor" - serving to read from > the 2 inputs and relaying that information over the network. > > I'm actually flexible enough to not even have the 2 inputs since shrinking > the system takes a higher priority. It is hard to say without knowing your design limitations about RAM, size, speed, power. My RM9200 boards have 10x10cm, 4 port ethernet switch, 64-128MB RAM and power consumption of 1.5-2.6W. It has a few GPIO - especially the RX/TX of the 4 USART as TTL and an I2C header, but it has only one USB port. There are smaller RM9200 boards with just a single RAM chip, which usually results in lower speed and without a switch. If you want more power and you have access to grid power a sheva plug can also be a nice alternative. On the other hand - I personally often use much smaller ARM7 with an embedded IP stack instead of a full featured FreeBSD system. Those systems can be even smaller since they don't need large SDRAM chips and the controllers are physically smaller as well. > -----Original Message----- > From: batcilla itself [mailto:batcilla@gmail.com] > Sent: Monday, March 08, 2010 7:29 AM > To: lists@walkertc.com > Cc: freebsd-arm@freebsd.org > Subject: Re: Smallest ARM Device for FreeBSD > > Is depends - which features you need? > I believe FreeBSD 8 or -current can be run on most 10x10cm ARM Xscale > boards, but only kernel and very minimal md rootfs. > Also you may need to port some i2c stuff and fix IRQ->GPIO etc. > > //batcill > > > _______________________________________________ > freebsd-arm@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" -- B.Walter http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.