PowerPC at least still has a living ecosystem, even from the bootloader level. GRUB can boot from an OpenFirmware system. There's also yaboot if you hate yourself. ;)
replyI would personally love to see more Power Systems based projects. Everything is out there, just someone has to want to do something with it.
Fedora Linux even fully supports POWER8+ little-endian systems, and Fedora KDE offers a live ISO you can install on something like a Talos Workstation.
There have been some PowerISA implementations, https://libre-soc.org/openpower/
although libre project had a major setback a few years ago:
replyhttps://lists.libre-soc.org/pipermail/libre-soc-dev/2024-Sep...