[U-Boot] Random problem on MPC8640D based board

[Thirumalai]

Hi,

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.

TRAP 200
########

U-Boot 2009.06 (Apr 27 2010 - 14:33:25) Data Patterns DPVPX0659 SPU COTS
Module

CPU:   8641, Version: 2.1, (0x80900021)
Core:  E600 Core 0, Version: 2.2, (0x80040202)
Clock Configuration:
       CPU:800  MHz, MPX:400  MHz
       DDR:200  MHz (400 MT/s data rate), LBC:25   MHz
L1:    D-cache 32 KB enabled
       I-cache 32 KB enabled
L2:    1024 KB enabled
Board Revision  : 1V00
FPGA Revision   : 1V00
I2C:   ready
POST:  Enabled
DRAM:  DDR-2 Enabled
    DDR: 512 MB
SDRAM Test skipped
Now running in RAM - U-Boot at: 1ffaa000
POST memory PASSED
FLASH: 512 MB
*** Warning - bad CRC, using default environment

PCI-EXPRESS 1: Agent
0xdff08020=0x00000000 R0 bus_start: 0 phys_start: 0 size: 20000000
               Not scanning PCI bus 00. PI=1
    PCI-EXPRESS 1 on bus 00 - 00
SRIO:  Machine check in kernel mode.
Caused by (from msr): regs 1ff87e08 MSS error. MSSSR0: 00001000
NIP: 1FFE0BE0 XER: 20000000 LR: 1FFE0BB8 REGS: 1ff87e08 TRAP: 0200 DAR:
00000000
MSR: 00101030 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11

GPR00: 000000FF 1FF87EF8 1FF87F78 00000000 00000020 00000000 00000000
FFFFFFFF
GPR08: 1FF87DE4 DC000034 1FF87C8F 1FF87DE4 00000000 FFFFFFFD 1FFF7100
200AA000
GPR16: F7FFFBFF FFAFF7FF FFFFFFFF FFFFFFDF FFFFFFFF 00000001 FFFFFBFF
FFFFF7FF
GPR24: FFEFEFFF FFFFFFFF FDEFFFFF 1FF87F58 1FF87FC4 20000000 1FFF89F4
00000001
Call backtrace:
1FFC22E4 1FFE27FC 1FFB5834 1FFAC560
machine check
Resetting Board...


Thank you
Thirumalai