From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Schweigstill Date: Mon, 01 Aug 2005 11:54:01 +0200 Subject: [U-Boot-Users] problems starting u-boot on AT91RM9200 In-Reply-To: <44046j$88qcbb@mxip23a.cluster1.charter.net> References: <44046j$88qcbb@mxip23a.cluster1.charter.net> Message-ID: <42EDF139.3020008@schweigstill.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Dear David! David Peters schrieb: > I've been trying to get u-boot 1.1.3 to start on an AT91RM9200 system, but I > can't get it to start properly. Once u-boot is copied to memory and loader > tries to start it, I get garbage on the screen and that is it. The problem > seems to be in lowlevel_initS. When it tries to transfer a setup value to a > register, that's when it fails. I've tried just changing one value and it > still fails. What am I missing? Have you checked that the clock rate and divisor settings are okay? You should use an oscilloscope or logic analyzer in order to find out if the "garbage" is related to an uncommon baudrate setting of the serial port. Do you use 32.768kHz and 18.432MHz oscillators? With best regards Andreas Schweigstill -- Dipl.-Phys. Andreas Schweigstill Schweigstill IT | Embedded Systems Schauenburgerstra?e 116, D-24118 Kiel, Germany Phone: (+49) 431 5606-435, Fax: (+49) 431 5606-436 Mobile: (+49) 171 6921973, Web: http://www.schweigstill.de/