FreeBSD 13.2 will not boot on PowerMac G5 Quad

M

mikochem

Hello,

Has anyone tried to boot FreeBSD 13.2 (ppc64) on a PowerMac G5 quad recently ? All I'm getting is a black screen with fans roaring when the kernel is loading.
I went through a bunch of treads including this one https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239245#c49 to look for an answer to no avail.

That being said, I was able to get a console output from 13.1 but it quickly hangs here

Root mount waiting for: usbus2 CAM

What would be the best way to get a kernel debug output to get an idea about what's going on ?

Thanks !
 
I should also mention that 12.4, OSX and Linux works just fine which tells me it is unlikely to be hardware related.

Searching for bugs I've found someone with the same issue :

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271826

Also it seems that the Toolchain/ABI starting with release 13 has departed from GCC4 which makes it even more red herring.

29 Dec, 2019: Release 13.0 for powerpc, powerpcspe and powerpc64 targets will replace GCC4 by LLVM compiler and powerpc64 will use the modern OpenPower 64-Bit ELF V2 ABI Specification.
Click to expand...
 
mikochem said:
Hello,

Has anyone tried to boot FreeBSD 13.2 (ppc64) on a PowerMac G5 quad recently ? All I'm getting is a black screen with fans roaring when the kernel is loading.
I went through a bunch of treads including this one https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239245#c49 to look for an answer to no avail.

That being said, I was able to get a console output from 13.1 but it quickly hangs here

Root mount waiting for: usbus2 CAM

What would be the best way to get a kernel debug output to get an idea about what's going on ?

Thanks !
Click to expand...

It is broken since 13.0: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271826

UPD. Ah, sorry, you just posted the link to the same.
 
I'm pretty sure the fix was not committed (or entirely committed). It's worth sending an email to Mark Millard, he probably has a better memory than I have.
 
msplsh said:
… PowerMac3,1 400Mhz …
Click to expand...

Mac Server G4 400 (AGP) <https://everymac.com/systems/apple/mac_server_g4/specs/macserver_g4_400.html> or Power Macintosh G4 400 (AGP) <https://everymac.com/systems/apple/powermac_g4/specs/powermac_g4_400_agp.html>?

Noting <https://www.freebsd.org/platforms/ppc/#ppcppc64>:
  • TARGET_ARCH powerpc for G4
  • TARGET_ARCH powerpc64 for G5
<https://www.freebsd.org/platforms/> both Tier 2, with a projected end for powerpc.

mikochem I'll request a move to <https://forums.freebsd.org/forums/other-architectures.37/>.
 
I got the chance to try and even after applying all the mitigations suggested in all threads I've found, at some point I always get stuck with full roaring fans - be it on 13 or 14.

Gave unofficial Debian port a spin, works fine, but I didn't manage to get the CPU power daemon up, so it is stuck at full CPU speed.
OpenBSD works, 32 bit, 2GB RAM.
Didn't try NetBSD.
T2 Linux - I didn't manage to boot.

It was a long afternoon. =)
 
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