From: Wolfgang Denk Date: Tue, 04 Dec 2007 08:27:22 +0100 Subject: [U-Boot-Users] u-boot TEXT_BASE relocatable In-Reply-To: Your message of "Mon, 03 Dec 2007 17:49:14 PST." <14143068.post@talk.nabble.com> Message-ID: <20071204072722.B239724828@gemini.denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de In message <14143068.post@talk.nabble.com> you wrote: > > I have my u-boot for ARM926Ejs... > And there are two DDR banks. The problem is I want to be able to run u-boot > from both the banks... Oops? U-Boot will (if configured properly) map all banks of RAM as a single contiguous memory area and use it all. > Reason? I need to do DDR testing (so need to change the offset values at > times in the control registers of the DDR)... > So if u-boot runs from Bank A, I can test Bank B, but as soon as I try and > change control register of Bank A...my system crashes or resets... Sounds as if you don't present us all information. Normally, i. e. when booting from NOR flash, U-Boot does the RAM testing while still running from flash, i. e. before relocation. You sound as if U-Boot was not booting from flash memory, but from some sort of storage device like NAND or data flash. In this case it is the responsibility of the bootstrap loader which sets up RAM to test it before using it. > ------=_Part_54830_4138933.1196732954043 > Content-Type: text/html; charset=us-ascii > Content-Transfer-Encoding: 7bit And NEVER post HTML here. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de "There's only one kind of woman ..." "Or man, for that matter. You either believe in yourself or you don't." -- Kirk and Harry Mudd, "Mudd's Women", stardate 1330.1