Help needed: Caliptra Subsystem on VCK190 triggers asynchronous SError during fpga-run

[cronus423]

Hello @swenson @mhatrevi @clundin25,

I hope you’re all doing well—sorry to bother you. Our team is working on running the Caliptra Subsystem on a VCK190. I followed the Caliptra-MCU-SW FPGA guidance: installed Ubuntu on the board and set up the required tooling on both the host and the FPGA. (Host (PC): Rust, Podman, rsync, git, cargo-nextest; FPGA (VCK190): rsync, git, make, gcc. cargo-nextest.
So far, running tests on the FPGA has been mostly successful. A few tests fail, but they appear to match the known failures your team has already listed in #2828 .

Next, I built the firmware bundle for the FPGA:
cargo xtask-fpga rom-build --platform fpga
cargo xtask-fpga runtime-build --platform fpga
cargo xtask-fpga all-build --platform fpga
I then copied all-fw.zip to the VCK190 via scp and ran cargo xtask-fpga fpga-run all-fw.zip on the board. At that point, the system consistently hits an asynchronous SError and kernel panics.

Would you mind explaining why this is happening? Could it be that I missed an important step, or that running on the FPGA isn’t supported at the moment?
Thank you in advance for any pointers on what to check next.

Best regards,

[clundin25]

Maybe @swenson is more familiar. I have shifted to using the development image described in https://chipsalliance.github.io/caliptra-mcu-sw/fpga.html#fpga-system.

Each week a new "developer" image is published, that is debian based. https://github.com/chipsalliance/caliptra-sw/actions/workflows/fpga-image.yml

[cronus423]

@clundin25 Thanks for your help. The panic I mentioned earlier happened while I was following the instructions here [https://chipsalliance.github.io/caliptra-mcu-sw/fpga.html#fpga-system]. I’m currently stuck at the “Running on FPGA” step—did you run into any issues at this step, or were you able to get it working?

[clundin25]

That flow isn't exercised by the CI so it may have been broken or bitrotted. I generally only use the test flows.