From: [email protected] <[email protected]> 
On Behalf Of Emily via lists.yoctoproject.org
Sent: Wednesday, April 6, 2022 12:22 PM
To: [email protected]
Subject: [meta-xilinx] fpgautil causes OS to freeze

  Hi - 

I was hoping to include fpgautil in my OS for a custom board/firmware, and 
using a zynq. I followed 
https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841847/Solution+ZynqMP+PL+Programming#SolutionZynqMPPLProgramming-References
 using rel-v2020.2 of all the layers and was able to build, but the OS freezes 
immediately, or after a few seconds, without even using the fpgautil. 

[Sandeep]: When you say zynq, Are you using zynq-7000 or zynq ultrascale+ 
mpsoc/rfsoc? If zynq-7000 then you need to refer 
https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841645/Solution+Zynq+PL+Programming+With+FPGA+Manager

Any thoughts on what may be doing this? I'm also using external-hdf to build 
for the custom board requirements. The XSA I'm including isn't too crazy, but 
does include a GPIO in the PL that the OS accesses regularly for temperature 
monitoring purposes. Could this be causing issues? Is there a workaround? 
[Sandeep]: AFAIK no issues from fpga drivers. Can you post this question in 
forums 
https://support.xilinx.com/s/topic/0TO2E000000YKXXWA4/embedded-linux?language=en_US
 as this is not related to yocto.

Additionally, it would be much nicer to be able to add the line indicated in 
the instructions: `EXTRA_IMAGE_FEATURES += " fpga-manager"` to the image 
definition since that's in my custom layer, instead of the build conf file. But 
when I do this, I get QA errors about /lib/firmware/base not being packaged. 
I've tried using IMAGE_FEATURES with similar results. If anyone has any 
thoughts there as well, I'd appreciate it. 
[Sandeep]: I haven't seen any QA errors with fpga manager feature enabled and 
packaging bitstream and dtbo to rootfs. But I can double check.

Best,
Emily 

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