From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfgang Denk Subject: Re: [PATCH/RFC] Add Alternative Log Buffer Support for printk Messages Date: Tue, 25 Nov 2008 22:05:02 +0100 Message-ID: <20081125210502.92402834B020@gemini.denx.de> References: <20081125135519.038abf23@zod.rchland.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-reply-to: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linuxppc-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@ozlabs.org Errors-To: linuxppc-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@ozlabs.org To: Matt Sealey Cc: linuxppc-dev@ozlabs.org, Stefan Roese , linux-embedded@vger.kernel.org, Grant Erickson Dear Matt, In message you wrote: > > There is also no reason you can't hard-code the locations into the device > tree, to support older U-Boots that don't know about > /chosen/linux,log-metadata and /chosen/linux,log-buffer*. Actually there is such reason - U-Boot traditionally allocates the log buffer close to the upper end of system memory, so the start address depends on the memory size on the board, which may vary. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de The human mind ordinarily operates at only ten percent of its capacity. The rest is overhead for the operating system.