[SeaBIOS] [PATCH v2 00/19] SeaBIOS as Compatibility Support Module for UEFI/OVMF

Kevin O'Connor kevin at koconnor.net
Fri Feb 8 23:14:00 CET 2013


On Fri, Feb 08, 2013 at 02:50:35PM +0000, Ian Campbell wrote:
> On Fri, 2013-02-08 at 14:45 +0000, Ian Campbell wrote:
> > 
> > I don't see this with rel-1.7.2. Bisecting fingers
> >         commit 6ca0460fbb8ecfa5d42c8928b7ee71f20d0cffdb
> >         Author: Kevin O'Connor <kevin at koconnor.net>
> >         Date:   Mon Jan 21 11:38:49 2013 -0500
> >         
> >             POST: Reorganize post entry and "preinit" functions.
> >         
> > But it doesn't look like this changes the order of anything, 
> 
> Except Xen is entering via handle_post not handle_elf, so it does change
> something, specifically xen_preinit() isn't called before
> make_bios_writable so the usingXen in there doesn't trigger. Xen
> (actually hvmloader) launches SeaBIOS with "ljmp $0xf000,$0xfff0" so I
> think handle_post is the expected landing point.

Thanks.  Sorry about that.  I was under the impression that Xen used
the elf entry point from our discussions long ago - but I guess that
was prior to the decision to use hvmloader.  I'll revert the recent
change that broke Xen.

Would you have a short description of how one can pull down the Xen
code and run a custom compiled SeaBIOS image on it?

-Kevin



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