From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by ozlabs.org (Postfix) with ESMTP id 44A8DDDFB5 for ; Tue, 17 Jun 2008 00:27:04 +1000 (EST) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1K8FfZ-0007Sg-3B for linuxppc-embedded@ozlabs.org; Mon, 16 Jun 2008 14:26:53 +0000 Received: from fw-emea.rohde-schwarz.com ([80.246.32.33]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 16 Jun 2008 14:26:53 +0000 Received: from euphoria by fw-emea.rohde-schwarz.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 16 Jun 2008 14:26:53 +0000 To: linuxppc-embedded@ozlabs.org From: Florian Boelstler Subject: Re: Reserving small amounts of memory with mem= (MPC85xx, 2.6.15 arch/ppc) Date: Mon, 16 Jun 2008 16:26:43 +0200 Message-ID: References: <485292C2.6030103@freescale.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed In-Reply-To: <485292C2.6030103@freescale.com> Sender: news List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Scott Wood wrote: > CAM entries can be any power of 4 between 4K and 256M. However, the > code currently is hardcoded to use no more than 3 entries. Ah, this explains a lot, thanks. > Alternately, do you have highmem enabled? That will let you access the > rest of the RAM that the CAM doesn't map, though I don't know if an > initrd in highmem works. I didn't had highmem enabled so far. Now it is and Linux is able to allocate rest of memory. It doesn't work if initrd is placed in highmem though. I just put it at the end of lowmem. Cheers, Florian