Excerpts from Alistair Popple's message of May 9, 2020 6:36 pm:

On Saturday, 9 May 2020 5:58:57 PM AEST Nicholas Piggin wrote:

quoted

Excerpts from Paul Mackerras's message of May 9, 2020 3:02 pm:

quoted

Microwatt is a FPGA-based implementation of the Power ISA.  It
currently only implements little-endian 64-bit mode, and does
not (yet) support SMP.

This adds a new machine type to support FPGA-based SoCs with a
Microwatt core.

Very cool!

Would there be any point sharing this with the "naked metal" platform
Alistair has for booting POWER in L3 without OPAL? Or is it easy enough
to have a several different simple 64s platforms?

It looks pretty similar at the moment, I've been meaning to clean those 
patches up and send them upstream but Paul has beaten me to it. The main 
difference so far is how the console is setup. For booting cache contained I 
was using a device tree pointing at a standard UART driver and enabling the 
standard OF platform device tree probing.

Well I'd only merge them if you think it makes sense. If the platform is 
a perfectly good abstraction for the differences and merging them would 
just result in painful special cases it wouldn't be worthwhile. It's
clearly not a lot of code.

Thanks,
Nick