Running Linux on Open Hardware [pdf]

As in this, currently no-MMU SuperH hardware: https://news.ycombinator.com/item?id=9812010

That's how I got to find the slides. The title was reverted by HN, it's a bit too generic now.

I don't get this. Why don't they just use the LEON? It uses the SPARC instruction set, which is an open standard. The LEON is GPL, in VHDL, and has been widely used for years in space missions and other applications. And it already runs Linux.

I think they hate GPL. Quote from the slide: "Releasing VHDL and build system under BSD license".

For those who just want to read about it, see http://nommu.org/

At first I was wondering if this was about http://riscv.org/ but it is not.