Hello GurumurthyGowdar,
GurumurthyGowdar wrote:
> On Thu, 30 Jul 2009 12:54:31 +0530 wrote
>> Hello GurumurthyGowdar,
>>
>> GurumurthyGowdar wrote:
>>> i am using MPC8280 in our board which has 512MB of SDRAM i.e. from micron.
>> Is this board in mainline, so I can look in the Source Code?
> yes this board is in mainline.only one board.
And which board is it?
As I saw in your log, it uses the "normal" mtest. Try to use
CONFIG_SYS_ALT_MEMTEST
instead. (Hopefully, this is available in 1.3.1 ...)
>> Which u-boot version?
> U-boot version is 1.3.1.
Hmm.. this is very old ...
>> Which SDRAMs?
> SDRAM is MT48LC32M16A2 from Micron.
>>> when i give command mtest only for 1MB to check memory test from U-boot,
>>> machine check and program exception is coming after 40 - 60mins later it
>>> hangs giving program check exception
>> Hmm... maybe problems with your SDRAMs?
> if it is SDRAM problem it should not work for 1hour also i think.
Why not?
>> Is this error shown always after 40-60 mins, not sometimes also earlier?
> maximum i am able to run mtest for 1hr 30 mins. sometimes it hangs with
> 45mins also.
Not earlier?
Hmm...
>> Can you boot a Linux Kernel for example?
> No. our job is to only give the board with U-boot boot loader, Linux booting
> is done by our client.
But you can try it ...
This would help here, to stress more the SDRAMs ... also you
can do better memtests there/with it.
>>> i have checked the SDRAM configuration settings everything is fine as per
>>> the device datasheet.
>>>
>>> please i want to know where is the problem, what is the cause for this
>>> exception. why memory test fails after 40-60mins.
>>>
>>> error output is as attached:-
>>>
>>> MPC8260 Reset Status: Check Stop, External Soft, External Hard
>>>
>>> MPC8260 Clock Configuration
>>> - Bus-to-Core Mult 5x, VCO Div 2, 60x Bus Freq 20-60 , Core Freq 100-300
>>> - dfbrg 1, corecnf 0x1b, busdf 7, cpmdf 1, plldf 0, pllmf 7, pcidf 3
>>> - vco_out 528000000, scc_clk 132000000, brg_clk 33000000
>>> - cpu_clk 330000000, cpm_clk 264000000, bus_clk 66000000
>>>
>>> CPU: MPC8260 (HiP7 Rev 14, Mask 1.0 1K49M) at 330 MHz
>>> Board: MPC8280 Based Remote IO CARD.SLN Technologies Pvt Ltd.
>>> I2C: ready
>>> DRAM: 512 MB
>>> FLASH: 256.5 MB
If this is one chip, are there really 256,5 MB ?
>>> *** Warning - bad CRC, using default environment
>>>
>>> NIP: 1FFE8A30 XER: 00000000 LR: 1FFE899CC REGS: 1ffa1df0 TRAP: 0700 DAR:
>>> 00000000
>>> MSR: 00083002 EE: 0 PR: 0 FP: 1 ME: 1 IR/DR: 00
>>>
>>> GPR00: 446BA781 1FFA1EE0 EFFFFFFF 3A858DD6 1FFA9F3C 000080C4 1FFA201D
>>> 3D313135
>>> GPR08: 1FFF0314 NIP: 1FFE9648 XER: 20000000 LR: 1FFE93DC REGS: 1ffa1a68
>>> TRAP: 0700 DAR: 00000000
>>> MSR: 00083002 EE: 0 PR: 0 FP: 1 ME: 1 IR/DR: 00
>>>
>>> GPR00: 00000030 1FFA1B58 EFFFFFFF 1FFA1C1C 00000000 00000010 FFFFFFFF
>>> 00000030
>>> GPR08: 00000041 00000000 00000000 00000002 1FFA1B60 FFF7FEFF 1FFFE000
>>> DFFD2000
>>> GPR16: 1FFF1240 1FFF1214 1FFF127C 1FFA1EA0 00003002 1FFA1DE0 1FFF47F8
>>> 1FFA1BD0
>>> GPR24: 1FFA1C14 00000041 1FFF094C 00000000 1FFF47A8 1FFA1F6C 1FFF$EBBC
>>> FFFFFFFF
>>> Call backtraace:
>>> Program Check Exception
>> I cannot see here in this log, where you typed mtest ...
>
> please see the attachment in this mail.i have captured the log file from
> hyper terminal.
Hmm.. I looked in the log. Is this right, that if you get this error
u-boot never returns to the shell prompt?
Also from your log:
Pattern 0000158A Writing... Reading...
Mem error @ 0x0071E65C: found 00008F3F, expected 00008F21
^^ ^^
Pattern FFFFEA75 Writing... Reading...
Mem error @ 0x00723684: found FFFF5CB6, expected FFFF5CD4
^^ ^^
always the last byte seems broken
Is there getting something hot and the board, and maybe disturb this datalines?
bye
Heiko
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
