Re: Ask a technical problem happened on PPC board

2011-12-31 Thread Lorenz Kolb
Hi, first of all: have you tried doing a standalone memory test application? From what I see you are using either a Virtex-4FX or Virtex-5FXT device, correct? So I'd highly recommend doing a standalone test prior to booting Linux to verify the memory controller timings of the FPGA based SoC.

Re: Ask a technical problem happened on PPC board

2011-12-31 Thread manu
Hi, it looks like a memory interface problem. This is a typical issue with FPGA-based PPC systems. You should check/monitor carefully the hardware : - power supplies - memory controller configuration (RAS, CAS, banks...) - timing of pins connected to external memory Prior to boot a linux kern

Ask a technical problem happened on PPC board

2011-12-30 Thread Wang, Junhua H. (NSN - CN/Hangzhou)
HI, all: Sorry to disturb all of you in the linuxppc-dev mail group. I am a new member from linuxppc-dev from China, and I have a very weird problem, it have been bothering me for a long time. I will be very grateful if you can help me to analyse it. 1) Problem description: a) FRIU(a circuit b