From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?iso-8859-15?q?Ra=FAl_S=E1nchez_Siles?= Date: Wed, 15 Nov 2006 17:08:53 +0100 Subject: [U-Boot-Users] AT91 Kernel oops when loading kernel from dataflash. In-Reply-To: <200611131130.44702.rss@barracuda.es> References: <200611081945.36688.rss@barracuda.es> <00ae01c703cd$576cde00$01c4af0a@atmel.com> <200611131130.44702.rss@barracuda.es> Message-ID: <200611151708.55205.rss@barracuda.es> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de El Lunes, 13 de Noviembre de 2006 11:30, escribi?: > El Jueves, 9 de Noviembre de 2006 08:02, Ulf Samuelsson escribi?: > > Ra?l S?nchez Siles wrote: > > > Hello all: > > > > > > We're using an AT91RM9200 based board called Portux920T. We have > > > now a quite stable kernel and u-boot configuration which I attach. We > > > manage to include a dataflash inside the portux board and get it to > > > work. At least almost, please read on. > > > > > > > > We have 64MB Ram and we have tried using 64MB 32bit wide and 32MB > > > 16bit wide. Flash and Dataflash are both 4MB. > > > We will much appreciated whatever info or test that could take out > > > from this works but... situation. Thank you very much. > > > > > > Regards, > > Looking at this scheme, one could think that the problem is on the 1st > stage bootloader. We have tried the binary provided by atmel, several > others binaries seen on the internet, we have compiled it ourselves using > u-boot initialisation routines, or without them. ...And indeed it was on the first stage bootloader. There was a problem with the SDRAMC Configuration Register. The problem was that the bootloader we took were for boards using 16MB of RAM, 16bit wide, while the Portux board has 2 32MB chips, 16bit wide each one. We modified the 1st bootloader source, so that the SDRAMC_CR programming changes the NR (Number of Row bits) from 12 to 13. That was the problem. If anyone needs further clarification, just ask. Thank you for the advises. Regards, -- Ra?l S?nchez Siles -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available Url : http://lists.denx.de/pipermail/u-boot/attachments/20061115/590ff1d0/attachment.pgp