The real tests are whether the openness includes the hardware's boot code. This is often a very sticky issue as discovered flaws in the already delivered HW or boot firmware can expose the manufacturer to law suits regarding delivery of faulty products.

On Tue, Nov 26, 2019, 6:45 AM grarpamp <grarpamp@gmail.com> wrote:
> https://www.sbir.gov/sbirsearch/detail/1508741

>   OBJECTIVE: Current commodity computer hardware and software are
>   proprietary. A thorough security review cannot be performed on
>   systems with undisclosed components. Offeror shall research high
>   assurance computer security based on a completely open hardware and
>   software platform following Saltzer and Schroeder’s open design
>   principles from 1975.

https://en.wikipedia.org/wiki/Evaluation_Assurance_Level
http://web.mit.edu/Saltzer/www/publications/protection/
https://www.cs.virginia.edu/~evans/cs551/saltzer/

#OpenFabs , #OpenHW , #OpenSW , #OpenAudit

Now who said there was no demand for that
and that it would be an unprofitable venture.
You should have been working on it to get
the drop on first dibs in the market... now
you've got to compete with the $Big guys.

You can still go for EAL7 and EAL8+ :)