EPCS64 access from HPS on Cyclone V

[Naresh9812]

Hi,

I am working on Terasic SoC System on Module Evaluation KIT.
I am trying to configure FPGA from HPS through FPPx32 configuration scheme and then read/copy EPCS64 sector to HPS DDR3 memory.
MSEL is configured to 01010 using on board DIP switch.

I can see that FPGA portion is configured successfully but data read from EPCS64 are all 0xFF.
Please note that EPCS64 sector is programmed and verified with non 0xFF data.

Serial Flash Controller IP slave memory interface is connected to master interface of Avalon-MM Pipeline bridge and slave interface of Avalon-MM Pipeline bridge is connected to h2f_axi_master interface of hps_0 in platform designer. 

Can MSEL in HPS scheme makes EPCS64 invisible to HPS ?
Is there any application note or design example to access EPCS from HPS when FPGA is configured in FPPx32 mode ?

Best Regards,
Naresh

[Naresh9812]

While reading the document I have found that Serial Flash Controller IP expects "Active Serial" by default.
This seems to be non-configurable in Qsys.

And MSEL is set to FPPx32 to perform FPGA configuration from HPS.

Hence, EPCS can't be accessed from HPS. 

Can someone please confirm ?

Best Regards,
Naresh

[whitepau_altera]

Thanks for the post Naresh, I'm looking into this now. 

I don't have access to that SoC eval kit, but I'm going to try and reproduce with the Terasic DE10 Nano, since that board appears to have the same FPGA and EPCS.

[whitepau_altera]

Hi Naresh,

I discussed your issue with a colleague, and we studied the schematic for your devkit:

https://www.terasic.com.tw/cgi-bin/page/archive_download.pl?Language=English&No=1211&FID=ed51cec1fd3eff2414308b716a4a21fe

Given that the EPCS is connected to the active serial pins on the Cyclone V, it is only accessible during configuration. Since you hav chosen to configure via FPPx32, you cannot access the EPCS once the HPS has booted.

[khtan]

Hi Naresh, 

Is there any further question related to the case? Otherwise we would like to set the thread to community support

Thanks

Regards

Kian

[khtan]

Hi Naresh,

As we do not receive any response from you on the previous question/reply/answer that we have provided. Please login to ‘https://supporttickets.intel.com/s/?language=en_US’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions.

Thanks

Regards

Kian