[syslinux] Boot iPXE from syslinux/isolinux

Christian Hesse list at eworm.de
Mon Nov 11 04:09:11 PST 2013


Christian Hesse <list at eworm.de> on Thu, 2013/10/24 10:09:
> Christian Hesse <list at eworm.de> on Tue, 2013/10/22 13:14:
> > Christian Hesse <list at eworm.de> on Tue, 2013/10/22 12:56:
> > > Gene Cumm <gene.cumm at gmail.com> on Tue, 2013/10/22 06:35:
> > > > On Tue, Oct 22, 2013 at 5:41 AM, Christian Hesse <list at eworm.de>
> > > > wrote:
> > > > > Hello everybody,
> > > > >
> > > > > iPXE builds an ISO image by default. (The build system has to be
> > > > > updated for new paths and to integrate ldlinux.c32, but that's not
> > > > > my problem.)
> > > > >
> > > > > With the binary syslinux files from kernel.org booting fails with
> > > > > latest version 6.02:
> > > > >
> > > > > Loading ipxe.krn... ok
> > > > > Booting kernel failed: Invalid argument
> > > > >
> > > > > It does work with version 6.01, though. Any hints how to fix this
> > > > > regression?
> > > > 
> > > > I presume this is using the precompiled binaries from kernel.org?
> > > 
> > > Yes.
> > > 
> > > > If
> > > > using the same ipxe.krn works on 6.01 and fails on 6.02, another thing
> > > > to try is to narrow it down to a -pre release.
> > > 
> > > version 6.02-pre5 works, 6.02-pre6 does not.
> > 
> > Struggled with git bisect, but finally succeeded:
> > 
> > 8f470e7bfe75f6401f6c5432988c620b863ad274 is the first bad commit
> > commit 8f470e7bfe75f6401f6c5432988c620b863ad274
> > Author: Matt Fleming <matt.fleming at intel.com>
> > Date:   Tue Jul 16 15:15:54 2013 +0100
> > 
> >     movebits: Add syslinux_memmap_find()
> >     
> >     Refactor the code for finding a suitable location for kernel
> >     protected-mode and real-mode data. It's complicated enough that it
> >     deserves to be separated into its own function.
> >     
> >     Signed-off-by: Matt Fleming <matt.fleming at intel.com>
> > 
> > :040000 040000 a7f3dc3f6ac34bd09336eff39e2f3d2d1bd8c9b6
> > 3e4cbdfc3cb9928c5c809fc4400623eefbc398f4 M      com32
> 
> If anybody tries to reproduce: I have uploaded an iPXE zImage that isolinux
> fails to boot:
> http://www.eworm.de/tmp/ipxe.lkrn
> 
> Let be know if you need any more info.

Is anybody working on this?
Is there a bug tracker I should report this to so it does not get forgotten?
Could not find one for syslinux.
-- 
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putchar(b-1/(/*               gcc -o sig sig.c && ./sig    */b/42*2-3)*42);}
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