From mboxrd@z Thu Jan 1 00:00:00 1970 From: Scott Wood Date: Tue, 30 Dec 2008 10:45:16 -0600 Subject: [U-Boot] Is it possible to use 2GB or DDR on MPC834x? In-Reply-To: <615EB96B23594360BC2ED911F0E855F0@gvv> References: <615EB96B23594360BC2ED911F0E855F0@gvv> Message-ID: <495A501C.2070502@freescale.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Valeriy Glushkov wrote: > Hi Guys! > > On my mpc8347 based board I can access 1GB of DDR with mapping 4 of 256MB > ranges via IBAT\DBAT registers. > > But with the 2 GB of DDR it's impossible to map them with BATs (there are > only 8 BATs in the e300 core and the rest 4 of them are already used). > > All the mpc83xx examples in the U-boot tree seem to use <=1GB of SDRAM, so > they use BATs to map them. > > Any suggestions are highly appreciated. Why do you need to access all 2GB from u-boot? -Scott