From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-gx0-f220.google.com (mail-gx0-f220.google.com [209.85.217.220]) by ozlabs.org (Postfix) with ESMTP id E41D1DDEE0 for ; Tue, 12 May 2009 10:04:37 +1000 (EST) Received: by gxk20 with SMTP id 20so6361333gxk.9 for ; Mon, 11 May 2009 17:04:36 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20090511231915.007AC1430052@mail201-wa4.bigfish.com> References: <4A0457BC.3040408@dlasys.net> <1242007203.7767.28.camel@concordia> <4A07C664.6040609@dlasys.net> <4A085612.9050602@dlasys.net> <4A089AC8.9080704@dlasys.net> <20090511231915.007AC1430052@mail201-wa4.bigfish.com> From: Grant Likely Date: Mon, 11 May 2009 18:04:16 -0600 Message-ID: Subject: Re: device trees. To: Stephen Neuendorffer Content-Type: text/plain; charset=ISO-8859-1 Cc: linuxppc-dev@ozlabs.org, "David H. Lynch Jr." List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, May 11, 2009 at 5:19 PM, Stephen Neuendorffer wrote: > >> >> =A0 =A0The best alternative to creating the device tree dynamically > would >> >> be to >> >> =A0 =A0append the devicetree to the bitimage in a way the boot loader > could >> >> always find it. >> >> >> > >> > That sounds like a good solution to me. >> > >> =A0 =A0 I am glad you like it. If Xilinx would like to offer any advice = as >> to how to prepend a device tree to the end of a bit file without >> =A0 =A0 foreclosing any of their future plans or .... I would be happy t= o >> look at implementing it. > > There are options here... > > For the benefit of the mailing list: they are tied into how the FPGA > configuration is loaded, and the > particular FPGA family. =A0By far the most portable/generic option is to > simply use an initialized BRAM for this. > > David: If you would like to have a discussion regarding particular > design tradeoffs, I'd be happy to, but since I doubt there is anyone on > this list who is interested in the vagaries of FPGA configuration > methods, I suggest we have the discussion privately. I disagree. There are lots of lurkers on this list who care about virtex stuff, not to mention non-lurkers like me. :-) I would at least like to be a fly on the wall of any such discussion. g. --=20 Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd.