I have a Xilinx ZC702 SoC board. PetaLinux 2020.1 running on it. I want to read the AXSS (USR_ACCESS) register from the FGPA. I set up the FPGA manager by using the petalinux-config commands. After compiling the kernel and rootfs, I load into the card.
The fpgautil user application is added as I can see from the console. I can run it, prompt help messages etc. But the problem is about the specific command as follows:
fpgautil -r
When I ran the above command from the PetaLinux terminal, I got the following error:
root@root:~# fpgautil -r
sh: /sys/module/zynqmp_fpga/parameters/readback_type: No such file or directory
cat: can't open '/sys/kernel/debug/fpga/fpga0/image': No such file or directory
Readback contents are stored in the file readback.bin
I follow the exact Xilinx tutorial in the link Solution ZynqMP PL Programming.
I did not understand why I got this error, furthermore, why zynqmp_fpga even if my SoC is not MPSoC but Zynq7000. Any help such as suggestions about roadmap or precise tutorial appreciated. Thanks :)