I am using a custom board with MPC8313E processor. In u-boot prompt, when i do TFTP of large size files, sometime it hangs completely and, sometimes it says bus fault, prints following message and resets the board.
/////////////////////////////////////////////////message printed///////////////////////////////////////////////// Bus Fault @ 0x00000900, fixup 0x00000000 Machine check in kernel mode. Caused by (from msr): regs 07f85b48 Unknown values in msr NIP: 00000900 XER: 20000000 LR: 07FC709C REGS: 07f85b48 TRAP: 0200 DAR: 07F85F58 MSR: 00001000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
GPR00: 00000000 07F85C38 00000080 FFFFFFFF 07FFCD80 07FEDB88 07FEDB88 07FED124 GPR08: 07FEDB98 4E800020 07FEDBB0 0000000C 07F85B28 F54ADC0C 07FF0000 09FA8000 GPR16: 7347FB13 00000000 00000000 00000000 00000000 00000000 00000000 00000000 GPR24: 07F89ED8 00000000 07F85FBC 00000003 00000000 07F85F58 0FFF1390 07FED054 Call backtrace: 07FC70D4 07FC7274 07FC73F8 07FAE0E8 07FC4724 07FCBDDC 07FCB4D0 07FCB6DC 07FBAAC4 07FCBDDC 07FCB4D0 07FCB62C 07FBA2B4 07FAC84C 07FAB66C 00420400 machine check Resetting the board. ////////////////////////////////////////////////////////////// /////////////////////////////////////////////////
Please help me with what could be the reason for this ?
Did you have one stable memory system?
What is the clock information? Such as core/csb/ddr data rate? What is the ACR value?
Thanks, Dave