[U-Boot] Random problem on MPC8640D based board

[Thirumalai]

----- Original Message ----- 
From: "Wolfgang Denk" <wd at denx.de>
To: "Thirumalai" <thirumalai.p at datapatterns.co.in>
Cc: <u-boot at lists.denx.de>
Sent: Wednesday, May 05, 2010 12:02 PM
Subject: Re: [U-Boot] Random problem on MPC8640D based board


> Dear "Thirumalai",
>
> In message <8F0ECFAA4F2C46928A69DE95FAF2A07B at itd210> you wrote:
>>
>> We are using MPC8640 in our board. During booting we are getting TRAP 200
>> randomly.  Some times it is booting without any issue some times it 
>> trapped
>> into the exception 200 and automatically restarts itself.  The PowerPC
>> archietecture defines TRAP 200 will be due to some TLB miss and related
>> things.  Can you please suggest me how to identify the source of the 
>> issue
>> and solve the problem.

Sorry. Trap 200 is Machine check exception. Also sometimes we are getting 
TRAP 300 which is DSI exception.

>
> 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.

>
> I recommend to check the RAM initialization sequence. I bet you see
> memory corruption effects.

What you meant for memory corruption effects?
>
> 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
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