RTEMS FPGA memory access failed

Jianxun Yan yanjx at jlab.org
Mon Nov 20 19:23:25 UTC 2017


I have a DE0 Nano SoC (Cyclone V) board that runs rtems 4.11. When RTEMS 
accesses the FPGA memory space (0xc0000000 - 0xfbffffff) via the 
HPS2FPGA AXI Bridge by using command - mdump, the system got reset and 
failed. The FPGA  is programmed and the HPS2FPGA AXI Bridge is working. 
The U-boot can access the FPGA memory address starting 0xc00000000. Does 
anyone knows why rtems can't access the FPGA? and how to solve it.



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