[kbrackbill]

Linux (https://en.wikipedia.org/wiki/Loongson#Operating_systems)

[matrix12]

Hmm no reference to the OpenBSD port. https://www.openbsd.org/loongson.html

[pantalaimon]

This is for the old MIPS based machines, the new ones have a custom ISA called LoongArch

[tcmart14]

NetBSD may? If not, it probably wouldn't be a terrible lift to get it running there.

[pantalaimon]

NetBSD development is pretty stagnant these days, I doubt they have much support for new machines