Using Uboot 2020.04, data read write between HPS to FPGA using LWH2F Bridge access

Question

I am trying read and write data from fpga using uboot application, using Cyclone5 socfpga(DE10 NANO)

Enabled the bridge access (socfpga_bridges_reset(0)) and permod register also programmed the fpga.

Can anyone suggest how to access the fpga register data.

Thanks,

Ravin

tehjingy_altera · Answer

Hi

To access to the IPs connected through the LWH2F bridge you could us ethe md command.

https://unix.stackexchange.com/questions/120374/memory-display-using-md-in-u-boot

For the LWH2F bridge you would need to start from the address 0xFF200000.

https://www.intel.com/content/www/us/en/programmable/hps/cyclone-v/hps.html#sfo1410068170804.html#sfo1410068170804

Regards

Jingyang, Teh

tehjingy_altera · Answer

Hi Do you have any follow up question on this thread?RegardsJingyang, Teh

tehjingy_altera · Answer

HiAs 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.RegardsJingyang, Teh

Forum Discussion

Using Uboot 2020.04, data read write between HPS to FPGA using LWH2F Bridge access

3 Replies

Recent Discussions

Stratix 10 FPGA Dev Kit VCCIO_FMC voltage issue

Mandelbrot viewer on Cyclone V - Platform Designer layout

A question about reading the configuration space of the R-Tile PCIe IP EP

Regarding Quartus Prime License Activation for the Agilex 5 Evaluation Kit

Stratix 10 Development Kit HiLo connector