re: SGI O2 unable to boot 9.0+ (status update)

[matthew green <mrg%eterna23.net@localhost>]

Mike Shields writes:
> Just thought I'd give a status update on the attempts to get R5k/R10k IP32 sgimips back to life:
> 
> I was able to find the point via bisection, only took about 9 or 10 iterations. On the freebsd-8 branch, the failure starts between 2018-03-07 and 2018-03-08 (a build of 03-97 boots fine, a build of 03-08 freezes after a few lines). 
> 
> I have been sifting through the changes, and am finding some updates in src/sys/arch/mips/mips/locore.S to be the most suspicious.
> 
> I am not familiar with R5k/R10k core setup steps, so I'm just fooling around in the dark for now, testing various reversions in that file, but with no success so far.
> 
> I'll keep plugging away, but if any other interested eyes have more familiarity, feel free to bail me out of these depths! ;-)

cc: maya@ who made these changes to locore.S rev's 1.211-1.217.


.mrg.