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Altera_Forum
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11 years ago

cyclone V FPGA: h2f bridge addressing

Hi, I had another related problem with a setup between C code on Linux/HPS and the FPGA on a cyclone V SoC FPGA board. While using it via the lw_h2f bridge worked, while it didn't with the h2f bri...
Altera_Forum's avatar
Altera_Forum
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11 years ago

0xFF50_0000 is where the control/status registers for the H2F bridge live in the memory map. So when you access those locations it's not going to be forwarded to the FPGA fabric, that's just for you to make setting changes to the bridge itself. The memory window into the FPGA is indeed located at 0xC000_0000.

Likewise 0xFF60_0000 is where the CSRs are for the F2H bridge is located. 0xFF40_0000 is where the CSRs for the lightweight H2F bridge are located.