Made a more general Internet search on open source/Unix M1 support, and found that Linux has support but is extremely early. Looks like it will be another 6-12 months until it's useful.
Also, any bare metal custom OS support on the M1 is based on that Apple's "custom kernel" function remains. I wonder if they have made any promises publicly that they indeed will keep it. Finally note that Power9 and RISCV are more open than the M1. The M1 is mostly interesting as it's a 5nm, high performance, low power ARM64 that works today. Details of Linux' support: some base M1 support was merged into Linux a month ago, and this month with manual patches especially for PCIe and non-accelerated graphics support, Linux does indeed run on the M1. No idea how well or how fast. "Asahilinux.org" drives the work, ref. https://asahilinux.org/about/ They released a report this month where they said they implemented MMU support, ref. https://asahilinux.org/2021/08/progress-report-august-2021/ It looks like they have Thunderbolt going per some commit comment, ref. https://github.com/corellium/linux-m1 . More references: https://www.tomshardware.com/news/apple-m1-debian-linux https://twitter.com/alyssarzg/status/1429579145827127296 https://www.phoronix.com/scan.php?page=news_item&px=Linux-Apple-M1-Boots-GNOME https://www.reddit.com/r/apple/comments/p9o9xq/m1_running_linux_gui_on_bare_metal_without/ha0byux/ On Friday, August 27th, 2021 at 12:30 AM, Joseph <joseph.ma...@protonmail.com> wrote: > Hi Marc and arm@, > > Now since February are there any more news on Apple M1 support? > > Does multiple CPU support work? XHCI? Graphics/keyboard/mouse? How > > stable is it? > > (Also just curious, by chance does PCIe over the two Thunderbolt ports > > work, for storage extension etc. I guess not.) > > How do you install it, via USB and then pressing some force-boot from > > USB at boot time? > > Thanks! > > On Sunday, February 21st, 2021 at 6:46 AM, Mark Kettenis > mark.kette...@xs4all.nl wrote: > > > So OpenBSD boots multi-user on the new Apple M1 hardware. This still [...]