From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Hawkins Date: Mon, 22 Oct 2007 10:37:18 -0700 Subject: [U-Boot-Users] 85xx running in RAM problems In-Reply-To: References: <4717AAB4.6000603@ovro.caltech.edu> Message-ID: <471CDFCE.3060905@ovro.caltech.edu> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de robert lazarski wrote: > On 10/18/07, David Hawkins wrote: >> Hi Robert, >> >>> On my custom 8548 board I'm getting two different results - with a BDI >>> [INIT] config, and without. With the BDI [INIT] config, I can get >>> farther by setting the DDR2 ram size to be 256MB instead of what I >>> have, 1GB. I have no other SDRAM besides DDR2. >> >> Unless you can guarantee your RAM is working fine, there's >> no point in trying to get code to run. >> > > I figured this out - we got the different behavior via BDI [INIT] from > the TIMING_CFG_n params leftover from CDS. The values detected from > SPD weren't working at all on the first batch of memory chips we > tried. In fact, we moved to higher quality Kingston DDR2 and SPD > started working and we got the u-boot prompt! I nearly hit the ceiling > ;-) . I ran mtest in u-boot and after running all day, it passed. > Glad to hear it! Cheers, Dave