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Re: [Qemu-ppc] FreeBSD powerpc issue
From: |
Andreas Tobler |
Subject: |
Re: [Qemu-ppc] FreeBSD powerpc issue |
Date: |
Sat, 25 Aug 2012 19:49:34 +0200 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:14.0) Gecko/20120713 Thunderbird/14.0 |
On 25.08.12 19:37, Mark Cave-Ayland wrote:
On 25/08/12 18:01, Andreas Tobler wrote:
SRR0 is the fault IP. So if the fault at hand is an instruction
fetch fault, yes, that would be the address at fault. If it's a
data fault you would have to check DAR for the address it faults
in.
It might also help to boot the guest with -d in_asm,cpu,int and
check out /tmp/qemu.log afterwards. Search for the IP that
faulted and see why exactly it did.
Whoa!!! The first try I ended after the log grew over 5GB :)
The next step was enabling the logging at a position where I knew
it is going to happen soon.
Below the excerpt from the qemu.log.
Now the big question for me, what does this exactly say?
Thanks for your hints, really appreciated!
Hi Mark!
Do you get any output with just OpenBIOS built with DEBUG_CIF enabled
in libopenbios/client.c? According to my email here, one of the
things I found a while back was that the dma-alloc method wasn't
defined in OpenBIOS for PPC when trying to boot (see the OpenBIOS
archives for more information).
Yeah, with this DEBUG option enabled I see something. The last entry is
about mmu and translations. Then it hangs. Well, it is in an endless
loop inside the FreeBSD kernel.
I my repeat myself, but the kernel starts booting from the loader.
And then, maybe after the mmu is on in the kernel? the exception occurs.
The dma-alloc issues I found in the archives appear much earlier in the
boot process, right? And do I get it right, that if needed, the
dma-alloc, I'd get an exception?
(Me new in this business ;)
Thanks,
Andreas
....
>> finddevice("/chosen") = 0xfff45644
>> getprop(0xfff45644, "mmu", 0x00c21efc, 4) = 4
>> 0x00c21efc 0f b5 a8 70 __ __ __ __ __ __ __ __ __ __ __ __ .??p
>> instance-to-package(0x0fb5a870) = 0xfff521c8
>> getproplen(0xfff521c8, "translations") = 0x00000250
>> getprop(0xfff521c8, "translations", 0x00024000, 592) = 592
>> 0x00024000 00 00 00 00 00 00 40 00 00 00 00 00 00 00 00 00
address@hidden
.....
.....
.....
- [Qemu-ppc] FreeBSD powerpc issue, Andreas Tobler, 2012/08/24
- Re: [Qemu-ppc] FreeBSD powerpc issue, Blue Swirl, 2012/08/25
- Re: [Qemu-ppc] FreeBSD powerpc issue, Andreas TObler, 2012/08/25
- Re: [Qemu-ppc] FreeBSD powerpc issue, Blue Swirl, 2012/08/25
- Re: [Qemu-ppc] FreeBSD powerpc issue, Andreas Tobler, 2012/08/25
- Re: [Qemu-ppc] FreeBSD powerpc issue, Alexander Graf, 2012/08/25
- Re: [Qemu-ppc] FreeBSD powerpc issue, Andreas Tobler, 2012/08/25
- Re: [Qemu-ppc] FreeBSD powerpc issue, Mark Cave-Ayland, 2012/08/25
- Re: [Qemu-ppc] FreeBSD powerpc issue,
Andreas Tobler <=
- Re: [Qemu-ppc] FreeBSD powerpc issue, Alexander Graf, 2012/08/26
- Re: [Qemu-ppc] FreeBSD powerpc issue, Andreas Tobler, 2012/08/26
- Re: [Qemu-ppc] FreeBSD powerpc issue, Alexander Graf, 2012/08/26
- Re: [Qemu-ppc] FreeBSD powerpc issue, Andreas Tobler, 2012/08/26
- Re: [Qemu-ppc] [OpenBIOS] FreeBSD powerpc issue, Segher Boessenkool, 2012/08/26
- Re: [Qemu-ppc] [OpenBIOS] FreeBSD powerpc issue, Andreas Tobler, 2012/08/26
- Re: [Qemu-ppc] [OpenBIOS] FreeBSD powerpc issue, Segher Boessenkool, 2012/08/26
- Re: [Qemu-ppc] [OpenBIOS] FreeBSD powerpc issue, Alexander Graf, 2012/08/27
- Re: [Qemu-ppc] [OpenBIOS] FreeBSD powerpc issue, Segher Boessenkool, 2012/08/27
- Re: [Qemu-ppc] [OpenBIOS] FreeBSD powerpc issue, Alexander Graf, 2012/08/27