Ephemeral Simulated Environments for Testing OpenTitan

Description

Hi OpenTitan Team,

We met some of the colleagues who work on Open Titan at the Open Source Summit in Dublin and discussed possible utility for ephemeral simulated test environments for embedded systems. We developed a Proof of Concept that is working well and wanted to share it with you.

In a fork of Open Titan we set up a GHA workflow that uses Uffizzi to create, update, delete an ephemeral simulated test environment on every PR. The environment is using the dependencies within Open Titan dockerfile to build the software and hardware.

An example environment is running on Uffizzi Cloud and is accessible via https here.

The full suite of on-device and on-host tests passed on the Uffizzi Environment

Here's a snapshot:

We'll keep the environment up for a few days (not too long because it's a bit costly) if you want to try it yourself. Please let us know if this would be useful to Open Titan and in general if it's useful to embedded systems.

@marnovandermaas
@shrutic-git

Review the linked fork's GitHub Actions workflow and the OpenTitan Dockerfile, then verify the reported full on-device and on-host test results. The issue does not define an integration scope or acceptance criteria, so a maintainer must decide whether an ephemeral Uffizzi environment is wanted and what completion should mean.