Dear Denx, ----- Original Message ----- From: "Wolfgang Denk" <[email protected]> To: "Thirumalai" <[email protected]> Cc: <[email protected]> Sent: Wednesday, May 05, 2010 12:38 PM Subject: Re: [U-Boot] Random problem on MPC8640D based board
> Dear "Thirumalai", > > In message <0c0a8ed2edfb487097801b3175c0f...@itd210> you wrote: >> >> Sorry. Trap 200 is Machine check exception. Also sometimes we are getting >> TRAP 300 which is DSI exception. > > It doesn't really matter which exception you are seeing. Fact is the > system is not running stable. Culprit # 1 in such situations is the > RAM not working stable. > >> > Did you try booting Linux on that board? Let me guess: if you tried, >> > it crashed, right? >> >> No. It is not crashing. Linux is booting on this board successfully. Its >> a >> random issue. > > How do you run Linux? Did you try running with root file system > mounted over NFS, and adding some real load, like compiling some > sources? > We are running with rootfile system mounted over NFS. we have used lmbench and ltp for load. >> > I recommend to check the RAM initialization sequence. I bet you see >> > memory corruption effects. >> >> What you meant for memory corruption effects? > > I mean that your RAm is not working reliably. See the FAQ: > http://www.denx.de/wiki/view/DULG/UBootCrashAfterRelocation > > 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: [email protected] > Mr. Cole's Axiom: > The sum of the intelligence on the planet is a constant; > the population is growing. _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
