The Linux 5.5 kernel due out as stable in early 2020 will finally have mainline support for the MIPS-powered SGI Octane and Octane II workstations that originally ran with SGI’s IRIX operating system about two decades ago.
There have been out-of-tree patches for running Linux on the SGI Octane MIPS-based systems while Linux 5.5 is set to finally have this support mainlined for these two decade old workstations should you still be running the hardware and looking for something else besides IRIX or support in other platforms like OpenBSD. Mind you, these workstations were already succeeded by the SGI Octane III a decade ago with Intel x86.
Better late than never.
Not familiar with Linux on MIPS, other than the PS2 fat with a hard drive. Wonder if any code from that was used for the Octane and Octane II support.