U60 doesn't boot anymore with -CURRENT

[Andreas Tobler]

On 13.06.10 21:15, Marius Strobl wrote:
> On Sun, Jun 13, 2010 at 04:38:52PM +0200, Andreas Tobler wrote:
>> Hi,
>>
>> my gecko testmachine refuses to boot with -CURRENT.
>>
>> Here the verbose part of the messages:
>>
>> ---
>> FreeBSD 9.0-CURRENT #0 r209123M: Sun Jun 13 14:07:28 CEST 2010
>>
>>      andreast at u60.andreas.nets:/usr/obj/export/devel/src/sys/GENERIC sparc64
>> Preloaded elf kernel "/boot/kernel/kernel" at 0xc0bbc000.
>> real memory  = 1610612736 (1536 MB)
>> avail memory = 1554571264 (1482 MB)
>> machine: SUNW,Ultra-60
>> cpu0: Sun Microsystems UltraSparc-II Processor (449.99 MHz CPU)
>>    mask=0xa0 maxtl=5 maxwin=7
>> initalizing intr_countp
>> ---
>>
>> And here it hangs.
>>
>> Any idea on hwat is going wrong?
>>
>
> Nothing obvious as no sparc64 specific changes went in lately.
> If you use a kernel built with options ALT_BREAK_TO_DEBUGGER,
> can you break into the debugger via the alternate break sequence
> on the serial console and get backtrace when it hangs? What is
> the last known working revision? Can you bisect which revsion
> triggers the problem?

I tracked it down to r207537, especially mp_locore.S.
If I use r207536 from mp_locore.S then my machine boots again.

Thanks,
Andreas