OMAP L138/DSP: Accessing FPGA with EMIFA

This is not a BIOS related issue, so I will be moving this thread to the OMAP-L1xx forum so it can get a faster response.

Dave

You need to program the EMIF registers that correspond to the chip select that you hooked up to your FPGA.  To read/write that memory you just perform a write to the region corresponding to that chip select.  For example, if you are using chip select 2 (/CS2) then you can see in the memory map of the data sheet that address range 0x60000000 to 0x61FFFFFF corresponds to /CS2.

Brad

I am doing the same thing on my board. I have connected my fpga to the OMAP through EMIFA. I have set the CEnCFG registers with the appropriate values.But I am unable to read any register from FPGA. I am doing all these settings through U-boot using MD/MW commands. Is this procedure right? Can you tell me any CCS project which uses EMIFA to access any FPGA , so that I can modify the code as per my custom board?

Regards

Ayusman

Sounds ok.  Have you probed the EMIFA at all?  Do you see the proper /CE being asserted?  Can you verify the FPGA is returning the proper data?