From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Warren Date: Tue, 04 Sep 2007 15:45:19 -0400 Subject: [U-Boot-Users] minimum bdi config to read flash on 85xx In-Reply-To: <46DDA35F.5000006@ovro.caltech.edu> References: <46DDA35F.5000006@ovro.caltech.edu> Message-ID: <46DDB5CF.90006@qstreams.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de David Hawkins wrote: > Hi Robert, > > >> The big problem we have now: is this a hardware issue or a bdi config >> issue? Aside from the flash we have 1GigaByte of DDR ram. Can anyone >> help us track our flash issues down to be hardware, config file, or >> some combination? The hardware guys think the board is fine. >> > > Have you checked that the Flash is getting accessed? > Very good point. I know you've made many changes since your initial setup Robert. Did any of them make the chip select strobe? > I'm working with an 83xx based board, so the 85xx will > be slightly different, but here's what I'd look for. > When the processor boots, it reads a hardware configuration > word (HCW) that tells it where to boot from. The pin strapping > can be set to tell it to use Flash. Assuming the HCW > is read correctly, you should be able to see the > CE# line on the Flash assert when the processor boots. > > Also, on the 83xx you can set the RCW values directly from the BDI-2000, using an entry like the following in the TARGET section: RCW 0x8060a000 0x04230000 This lets you set a lot of boot options. Maybe the 8548 can do this too? > So, assuming you convince yourself that the hardware > configuration words are being read, you should be able > to confirm that the Flash is being accessed after > reset. > > You might have to try this with the JTAG/COP disconnected. > > Cheers, > Dave > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > U-Boot-Users mailing list > U-Boot-Users at lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/u-boot-users > >