From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Ball Subject: Re: [RFC] mmc_test: how use mmc_test on only eMMC board Date: Thu, 19 May 2011 10:58:29 -0400 Message-ID: References: <4DD4A23F.10400@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from void.printf.net ([89.145.121.20]:40732 "EHLO void.printf.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932363Ab1ESO4q (ORCPT ); Thu, 19 May 2011 10:56:46 -0400 In-Reply-To: <4DD4A23F.10400@samsung.com> (Jaehoon Chung's message of "Thu, 19 May 2011 13:53:19 +0900") Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Jaehoon Chung Cc: "linux-mmc@vger.kernel.org" , Kyungmin Park Hi, On Thu, May 19 2011, Jaehoon Chung wrote: > Hi mailing.. > > I want to know how use mmc_test.. > > In my case, i used only eMMC board. > So i didn't use unbind/bind for mmc_test. > > echo mmc0:0001 > /sys/bus/mmc/drivers/mmcblk/unbind > then rootfs of my board has be broken mmc_test destroys the data on the card being tested, so there is no way to use it on your active rootfs. You would have to boot from external SD (or USB, or network, or something else) in order to run it on your internal eMMC. If you do this, first make sure your eMMC doesn't contain any data needed to boot your system far enough to be able to boot a kernel from another device. - Chris. -- Chris Ball One Laptop Per Child