From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id A7B30E00DFC; Thu, 14 Apr 2016 21:56:29 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] Received: from mail.analogue-micro.com (mail.analogue-micro.com [217.144.149.242]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 699AFE00ACF for ; Thu, 14 Apr 2016 21:56:26 -0700 (PDT) Received: by mail.analogue-micro.com (Postfix, from userid 999) id 548BF68A01A; Fri, 15 Apr 2016 05:56:25 +0100 (BST) Received: from zeus.mlbassoc.com (unknown [10.8.0.2]) by mail.analogue-micro.com (Postfix) with ESMTP id 5437968A019; Fri, 15 Apr 2016 05:56:22 +0100 (BST) Received: from [127.0.0.1] (localhost.localdomain [127.0.0.1]) by zeus.mlbassoc.com (Postfix) with ESMTP id D4D4A6741AE1; Fri, 15 Apr 2016 06:56:21 +0200 (CEST) To: "meta-freescale@yoctoproject.org" From: Gary Thomas Message-ID: <57107474.3070100@mlbassoc.com> Date: Fri, 15 Apr 2016 06:56:20 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 Subject: [meta-fsl-arm] i.MX6 memory needs X-BeenThere: meta-freescale@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Usage and development list for the meta-fsl-* layers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Apr 2016 04:56:29 -0000 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit I realize this is a bit off-topic but I'm hoping someone might have an idea for me. I want to run my i.MX6 targets with a fairly small amount of DDR RAM. I have a i.MX6UL which runs happily in 512MB. When I boot and check things (/proc/meminfo) I can see that very little of this memory is actually used. Sadly, if I tell the kernel to use only 256MB, it crashes with illegal address exceptions (different platforms get different errors, but they all die horribly). I've tried the same thing using qemuarm and it is quite happy with only 256MB. Any ideas about this? Will I be able to run i.MX6 with only 256MB? n.b. to test this I just added 'mem=256m' to "bootargs". -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------