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Re: [PATCH] Incorrect segment 0 initialization for PMAC G5

On 03/31/2013 04:22 PM, Nathan Whitehorn wrote:

A the author of the FreeBSD code, there are two main hazards with the U4
PIC. One is that you have to use big-endian accessors for it, which it
seems like you are doing. The other, which I think you have just run
into, is that there is a hidden IO APIC attached to the Hypertransport
bus that needs to be manually coordinated with the U4 OpenPIC. You can
find how this works in the "htpic" driver at the bottom of
(starts around line 530).

Thanks for the information. I will take a look at it.

I have tried FreeBSD 9.1 on my G5 too but getting odd lockups all
the time, it's quite annoying and unusable currently on my G5.
I read some posts on the FreeBSD hackers mailing list and
it seems that i'm not the only one with this problem.
I tried to manually set FAN speedsa and it didn't help at all.
I get lockups even when filesystem is checked because of the previous
lockup. Any idea what is wrong here ? Linux 3.8 runs perfectly
on the same machine so it cannot be the hardware.


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