[coreboot] r4315, CBFS, supermicro H8DME -> boom
Ward Vandewege
ward at gnu.org
Fri Jun 19 16:21:03 CEST 2009
So, yesterday I spent some quality time tracking down a rather odd issue I
saw with svn head (r4362):
http://ward.vandewege.net/coreboot/h8dme/minicom-20090618b.cap
As you can see, coreboot somehow garbles serial output right after printing
Clearing initial memory region: Done
and then finally soft resets after entering a CBFS stage:
Stage: load @ 819200/28672 bytes, enter @ c8000
I tracked this down to r4315. Here's a boot log with r4315:
http://ward.vandewege.net/coreboot/h8dme/minicom-20090618q.cap
And here's r4314, which works:
http://ward.vandewege.net/coreboot/h8dme/minicom-20090618q.cap
The weird thing is that I don't have this problem on an h8dmr with K10 cpus
(though I'm still tracking down other issues there, so perhaps they mask this
problem), nor on an m57sli with a dual core AM2 CPU.
I talked to Patrick (the author of r4315) about this yesterday on IRC, and he
said he could not reproduce this on SimNow with amd/serengeti_cheetah.
So, if anyone has thoughts on what might be causing this, they would be very
welcome :)
Thanks,
Ward.
--
Ward Vandewege <ward at fsf.org>
Free Software Foundation - Senior Systems Administrator
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