Dear Sir, i am using MPC8280 in our board which has 512MB of SDRAM i.e. 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
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 *** 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 am stuck here, dont know where to check if it hangs after 40-60mins.
do help me out in this regard,
Thanks in advance gurumurthy