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Re: [Qemu-ppc] [OpenBIOS] FreeBSD powerpc issue
From: |
Andreas Tobler |
Subject: |
Re: [Qemu-ppc] [OpenBIOS] FreeBSD powerpc issue |
Date: |
Sun, 26 Aug 2012 20:38:58 +0200 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.5; rv:14.0) Gecko/20120713 Thunderbird/14.0 |
On 26.08.12 19:02, Segher Boessenkool wrote:
Now I have to find out about why the OpwnBIOS area is not mapped.
Is it the case that the 'of' code on Apple HW is located
elsewhere, not on such high address like 0xfff00000?
Apple OF normally sits at the top of the address space, too.
Thanks for clarification!
Or should that not matter?
Phew. I honestly have no idea how this would work at all even on
Apple HW. Linux simply handles everything from real mode (disable
paging) when going into anything firmware related. I have no idea
what OpenBSD does. If you could try to find out and summarize it, I
might be able to reconstruct how it could work :).
Perhaps the OpenBSD code did not flush the TLB yet? Or does QEMU
emulate the TLB properly? I seriously doubt that :-)
Hm, s/OpenBSD/FreeBSD. :)
How do I flush the TLB? Then I can look up in the code and see where it
is done. I guess we do that but the place/time might be the question.
(Otherwise it wouldn't work on real HW, right?)
The logs do not show whether segment x'f is still mapped in the
SRs (or I missed it). Is it?
How can I enable this log or make it visible?
And sorry for not being subscribed to the OPenBIOS list. Now I am and
everybody should see all my posts to this list too.
Thanks!
Andreas
- Re: [Qemu-ppc] FreeBSD powerpc issue, (continued)
- 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, 2012/08/25
- 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 <=
- 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
- Re: [Qemu-ppc] [OpenBIOS] FreeBSD powerpc issue, Andreas Tobler, 2012/08/31