From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pete MacKay Date: Tue, 22 May 2007 22:44:53 -0700 (PDT) Subject: [U-Boot-Users] Xloader In-Reply-To: <41483bfe0705171611k5d746574rba5cbb62bc472b75@mail.gmail.com> References: <41483bfe0705171611k5d746574rba5cbb62bc472b75@mail.gmail.com> Message-ID: <10757871.post@talk.nabble.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de X-loader is for boards booting from the Samsung OneNAND flash chip. You have only 1K of RAM that's sucked out of the first NAND block's page 0 on power up, so you have to bootstrap the boot loader. You position u-boot at the 2K boundary (page 1) of block 0. X-loader's job is to initialize the RAM on your board and copy the NAND pages containing u-boot into it and then branch execution into the relocated u-boot reset vector in RAM. Not many JTAG products support OneNAND, but I hear they're out there. It sounds like you have a learning curve ahead of you, but I hope this helps. Check out my latest post on shoe-horning the x-loader function directly into u-boot. Good luck! harsh poshtiwala wrote: > > Hi Friends, > > We are trying to bringup ARM926EJS core based board. > > We need to port uboot on it,I learned that before i port uboot we need > to port XLOADER and some JTAG memory initialization file as well as > some of the plain files on the board. > > > We are using Platform toolset supplied by ST to flash uboot and all this > files. > > We have a JTAG probe as well that we would like to connect to board > once we get our xloader flased. > > > So why do we need XLOADER and other files to port Uboot? > > Any document to answer this ? or any commets ? > > -- > Thanks & Regards > Harsh > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > U-Boot-Users mailing list > U-Boot-Users at lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/u-boot-users > > -- View this message in context: http://www.nabble.com/Xloader-tf3774827.html#a10757871 Sent from the Uboot - Users mailing list archive at Nabble.com.