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Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios
From: |
Kevin O'Connor |
Subject: |
Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios |
Date: |
Thu, 26 Nov 2009 02:48:46 -0500 |
User-agent: |
Mutt/1.5.19 (2009-01-05) |
On Thu, Nov 26, 2009 at 09:20:34AM +0200, Gleb Natapov wrote:
> On Thu, Nov 26, 2009 at 02:15:27AM -0500, Kevin O'Connor wrote:
> > Now, if the bios is reloaded, the jump to the resume vector will skip
> > ide, bios table, and other internal state setup. So, later calls to
> > the bios will likely fail.
> >
> Seabios stores .bss and .data section in BIOS segments?
Yes.
>If this is the
> case that you are right. Can we move them somewhere else and add it to
> e820 map?
That would significantly complicate the code, and it wouldn't truly
solve the issue as some data needs to be stored in the f-segment (eg,
smbios anchor).
>Although event then switching to real mode using triple fault
> after migration to newer BIOS will not work properly.
IMO, migrating to a new bios doesn't make sense - the bios is an
application with state - one can't just replace the code.
-Kevin
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, (continued)
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Kevin O'Connor, 2009/11/25
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/25
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/25
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Jamie Lokier, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/27
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/25
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Kevin O'Connor, 2009/11/25
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Kevin O'Connor, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios,
Kevin O'Connor <=
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Kevin O'Connor, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Kevin O'Connor, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Kevin O'Connor, 2009/11/27
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/26
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Gleb Natapov, 2009/11/27
- Re: [Qemu-devel] Re: POST failure (loop) with isapc and seabios, Sebastian Herbszt, 2009/11/27