From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id A1DFAE009B8; Tue, 14 Apr 2015 08:11:34 -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.chez-thomas.org (mail.mlbassoc.com [65.100.170.105]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 61BEEE0098A for ; Tue, 14 Apr 2015 08:11:31 -0700 (PDT) Received: by mail.chez-thomas.org (Postfix, from userid 1998) id 29582F811E1; Tue, 14 Apr 2015 09:11:31 -0600 (MDT) Received: from [192.168.1.114] (zeus [192.168.1.114]) by mail.chez-thomas.org (Postfix) with ESMTP id D9319F811DF; Tue, 14 Apr 2015 09:11:29 -0600 (MDT) Message-ID: <552D2E3B.4000206@mlbassoc.com> Date: Tue, 14 Apr 2015 09:11:55 -0600 From: Gary Thomas User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Otavio Salvador References: <552D2B25.9010000@mlbassoc.com> <552D2C66.4040706@mlbassoc.com> In-Reply-To: Cc: "meta-freescale@yoctoproject.org" Subject: Re: Boot on eMMC 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: Tue, 14 Apr 2015 15:11:34 -0000 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit On 2015-04-14 09:05, Otavio Salvador wrote: > On Tue, Apr 14, 2015 at 12:04 PM, Gary Thomas wrote: >> On 2015-04-14 09:00, Otavio Salvador wrote: >>> >>> On Tue, Apr 14, 2015 at 11:58 AM, Gary Thomas wrote: >>>> >>>> On 2015-04-14 08:28, Otavio Salvador wrote: >>>>> >>>>> >>>>> On Tue, Apr 14, 2015 at 11:12 AM, Shanx wrote: >>>>>> >>>>>> >>>>>> Hello, >>>>>> I've tried a lot of things, but I can't boot on eMMC. I've flashed it >>>>>> from >>>>>> u-boot, or from the system (booted from the sdcard). For exemple, I've >>>>>> tried >>>>>> : dd if=rootfs.sdcard of=/dev/mmcblk3 >>>>>> I've also tried to flash only u-boot.imx (with dd and seek=2) >>>>>> >>>>>> When booting on eMMC (with the boot switch setup given on the Linux >>>>>> User >>>>>> Guide), nothing append. Any idea why ? >>>>> >>>>> >>>>> >>>>> eMMC has some details which differ from the uSD normal usage. Mainly >>>>> regarding the use of Boot Partitions. So you must to write it to the >>>>> boot partition otherwise it won't work. >>>>> >>>> >>>> I'm not sure this is correct. I have an i.MX6Q board which has >>>> eMMC on SD4 and SD on SD3 and I can boot from either, using the >>>> same command to install U-Boot >>>> dd if=/tmp/disk/${UBOOT_NAME} of=${DISK} seek=2 bs=512 conv=notrunc >>>> >>>> Maybe it's a difference in the eMMC device (mine is Sandisk SDIN5 >>>> (or7)C2-32G-L) >>> >>> >>> It depends if Boot Partition is enabled or not. >>> >> >> Is that an i.MX6 setting? > > No; it is eMMC 4.41 (or later) one if IIRC. There are some fields > exposed in sysfs and also a mmc-utils package at meta-oe. > Interesting, I'll look at this but my boards have boot partitions: mmc0: new high speed DDR MMC card at address 0001 mmcblk0: mmc0:0001 SEM32G 29.1 GiB mmcblk0boot0: mmc0:0001 SEM32G partition 1 4.00 MiB mmcblk0boot1: mmc0:0001 SEM32G partition 2 4.00 MiB usb 1-1: new high-speed USB device number 2 using ci_hdrc mmcblk0rpmb: mmc0:0001 SEM32G partition 3 4.00 MiB mmcblk0: p1 p2 mmcblk0boot1: unknown partition table mmcblk0boot0: unknown partition table As I said, I install U-Boot directly to block 2 of the device, not to any of the "boot" partitions. -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------