From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id BF4F5E0086D; Mon, 18 May 2015 05:12:38 -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=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, * medium trust * [131.246.120.220 listed in list.dnswl.org] * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] Received: from mailgw1.uni-kl.de (mailgw1.uni-kl.de [131.246.120.220]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 3BC69E007B6 for ; Mon, 18 May 2015 05:12:32 -0700 (PDT) Received: from [IPv6:2001:638:208:480d:18ca:794e:7c7a:c069] ([IPv6:2001:638:208:480d:18ca:794e:7c7a:c069]) (authenticated bits=0) by mailgw1.uni-kl.de (8.14.4/8.14.4/Debian-7) with ESMTP id t4ICCU8v009667 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Mon, 18 May 2015 14:12:30 +0200 Message-ID: <5559D72E.1000506@cs.uni-kl.de> Date: Mon, 18 May 2015 14:12:30 +0200 From: Steffen Schuetz User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: yocto@yoctoproject.org References: <5559B3E0.7080104@cs.uni-kl.de> In-Reply-To: <5559B3E0.7080104@cs.uni-kl.de> Subject: Re: Altera Cyclone V DTB origin X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 May 2015 12:12:38 -0000 X-Groupsio-MsgNum: 24870 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="C2u5NuVvEQdLo40bxsCA82KKQKbJSN3IV" --C2u5NuVvEQdLo40bxsCA82KKQKbJSN3IV Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Hi, I found that the dtb is obtained from a git reposirtory during the build and stored under build/tmp/work/socfpga_cyclone5-poky-linux-gnueabi/linux-altera-ltsi/3.10= -r1/git/arch/arm/boot/dts/ I succesfully build a custom dtb following these suggestions: https://community.freescale.com/thread/325219 Is there a way to do this using a bitbake mechanism? Thanks! Best Regards, Steffen On 05/18/2015 11:41 AM, Steffen Schuetz wrote: > Hi, > > I build a customized Linux image using Yocto Daisy - we need gcc >=3D 4= =2E8 > - following the instructions at > http://rocketboards.org/foswiki/Documentation/YoctoDoraBuildWithMetaAlt= era . > Besides the zImage and rootfs the build process outputs an .dtb file. > Now, in order to get the FPGA fabric involved, I'd have to come up with= > a modified dts and build it. > That's where I'm a bit lost in the blur. I can not figure out where the= > generated dtb is coming from? What's the mechanism behind? I cannot fin= d > any .dts nor .dtb in the meta-altera layer. > > Besides that I realized that if I use the dtb that shipped with the > board with the "daisy" kernel, the boot process gets stuck at "Waiting > for root device /dev/mmcblk0p3..." The "shipped" kernel is version 3.8.= 0 > while the "daisy" one is 3.10.31-ltsi. > Was there a change in the device tree layout as the "old" one doesn't > work with the "daisy" kernel? > > > Thanks in advance! > > Regards, > Steffen --C2u5NuVvEQdLo40bxsCA82KKQKbJSN3IV Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJVWdcuAAoJEKrAQLUVzr6sq5YIAKNa+YNFa0oC5/lVeU3ryX+C 8pb7eM7Z66i4DQTyHsJpNvLnuMooi2+peODUWuKgODAIRGTfaGCrcOS7AJ4Eeylo mrAWNr5gthO+0nzh5L/tkvGB0GDEApbI5E6moYMqZ3VjYgfipabbwt9od9vDIsQE eSD7cSklysLKWchL9DwdoS8X1wXFVL/8iM6Q8OSbjMigWfmUAbDw9fxMp5iqMD6C qVUYzOtDaL6GVOdz97PZIu+ABLt26T5w/JIsExIaAqfPa4R65hy1P1l5oqRCtdSe l16RqybcSzz4XJLNWtnVXV+46PwAwyS1IRJdyTh0oQr/W3rTyhTZparzguYKwqA= =bzQp -----END PGP SIGNATURE----- --C2u5NuVvEQdLo40bxsCA82KKQKbJSN3IV--