From: Stefan Roese <sr@denx.de>
To: linuxppc-dev@ozlabs.org
Cc: SunNeo <sunwx2001@hotmail.com>
Subject: Re: Help!Some memory doesn't work on PPC405Ex based board!
Date: Tue, 14 Apr 2009 11:23:02 +0200 [thread overview]
Message-ID: <200904141123.02495.sr@denx.de> (raw)
In-Reply-To: <BAY114-W121B40A28E203154BC9209AB7F0@phx.gbl>
On Monday 13 April 2009, SunNeo wrote:
> I'm porting Linux-2.6.29 on PPC405Ex based board, it's very similar to AMCC
> "Kilauea" evb.
>
> In my board, two 512MB DDRII memory is connected to 2 ranks of the 405Ex
> CPU. This 1GB memory works well at U-Boot-2009.01, but when I boot
> Linux-2.6.29, the kernel hangs somewhere.
Does it just hang "somewhere", or always at the same location? A random hangup
could mean that you are having a memory problem (hardware, or wrong
initialization).
> What interesting is, if I
> configured the system to use only 512MB memory at U-Boot, the Linux can
> boot normally.
Are you using DIMM's on your platform? Or soldered chips? Which memory
initialization code are you using in U-Boot? And which autocalibration code?
Did you do some intensive memory test?
Best regards,
Stefan
next prev parent reply other threads:[~2009-04-14 9:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-13 12:05 Help!Some memory doesn't work on PPC405Ex based board! SunNeo
2009-04-14 9:23 ` Stefan Roese [this message]
2009-04-14 11:08 ` SunNeo
2009-04-14 12:20 ` Stefan Roese
2009-04-14 14:04 ` Grant Erickson
2009-04-14 16:30 ` Feng Kan
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