the memory test from U-boot does not complain as well as vxWorks. I will do my own test anyway.
-----Original Message----- From: Eugene Surovegin [mailto:[EMAIL PROTECTED] Sent: Friday, December 03, 2004 5:40 PM To: Barbier, Renaud (GE Infrastructure) Cc: linuxppc-embedded at ozlabs.org Subject: Re: 440GX MMU problem On Fri, Dec 03, 2004 at 06:12:31AM -0600, Barbier, Renaud (GE Infrastructure) wrote: > > I am using linux 2.4.26 on a 440GX with 512MB of SDRAM. > >From U-boot I can see the whole memory. > If I boot Linux, unless I set the boot parameter mem=256M (or less). > it will not boot. Linux does not seem to go further than the MMU_setup. > > Any idea why it cannot use 512MB? Incorrect SDRAM setup? Try running at least simple memory tests. -- Eugene