From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jaehoon Chung Subject: Re: [patchv3 4/4] MMC: MMC boot partitions support. Date: Thu, 21 Apr 2011 13:31:12 +0900 Message-ID: <4DAFB310.6030502@samsung.com> References: <1302556424-21951-4-git-send-email-andreiw@motorola.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7BIT Return-path: Received: from mailout4.samsung.com ([203.254.224.34]:9641 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750860Ab1DUEdZ (ORCPT ); Thu, 21 Apr 2011 00:33:25 -0400 Received: from epcpsbgm2.samsung.com (mailout4.samsung.com [203.254.224.34]) by mailout4.samsung.com (Oracle Communications Messaging Exchange Server 7u4-19.01 64bit (built Sep 7 2010)) with ESMTP id <0LJZ00C9XJBKIV80@mailout4.samsung.com> for linux-mmc@vger.kernel.org; Thu, 21 Apr 2011 13:33:23 +0900 (KST) Received: from TNRNDGASPAPP1.tn.corp.samsungelectronics.net ([165.213.149.150]) by mmp2.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTPA id <0LJZ00F5GJBNO3@mmp2.samsung.com> for linux-mmc@vger.kernel.org; Thu, 21 Apr 2011 13:33:23 +0900 (KST) In-reply-to: Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Chris Ball Cc: Andrei Warkentin , linux-mmc@vger.kernel.org, arnd@arndb.de Hi Chris. Chris Ball wrote: > Hi Andrei, > > On Mon, Apr 11 2011, Andrei Warkentin wrote: >> Allows device MMC boot partitions to be accessed. MMC partitions >> are treated effectively as separate block devices on the same >> MMC card. > > Booted this with a Sandisk SEM04G eMMC: > > [ 2.469921] mmcblk0boot0: mmc2:0001 SEM04G partition 1 1.00 MiB > [ 2.475905] mmcblk0boot1: mmc2:0001 SEM04G partition 2 1.00 MiB > [ 2.489403] mmcblk0boot1: unknown partition table > [ 2.495921] mmcblk0boot0: unknown partition table > > I haven't set up any boot partitions explicitly, so I guess the two 1MiB > boot partitions might be the factory-default setting. Out of curiosity, > does that match your experience with Sandisk eMMCs? in my experience, Sandisk set up boot partition with each 1MiB. (default setting) Regards, Jaehoon Chung > > - Chris.