[syslinux] Current pxelinux always unloads undi driver

[Adam Goldman]

The git version of syslinux won't solve your problem. It doesn't have 
the keeppxe patch at this time. I can't help you to get pxelinux to load 
ldlinux.c32. I didn't write syslinux. I've Cc'd the mailing list. Maybe 
someone there can help you.

-- Adam

On Sun, Nov 27, 2016 at 07:38:53PM +0100, Pedro Koschi wrote:
> Hello Adam,
> I was able to compile syslinux in mint linux (ubuntu 16.04) with minor
> warnings (the compiler was unhappy with unused variables and type casts)
> from current git repo.
> 
> When this version of pxelinux starts (6.04 pre1 17 g852bd3f*), it
> downloads  ldlinux.c32 from tftp refusing to use it,  then looks at other
> locations .. and finally gives me the error : failed to load ldlinux.c32.
> 
> If I replace ldlinux.c32 with the version from freely available pre1
> version , booting continues fine but undi driver will be still unloaded.
> Does a precompiled version of the latest development version exist for
> download ?
> 
> Thank you
> 
> 
> 
> 
> Am 21.11.2016 07:29 schrieb "Adam Goldman" <adamg at pobox.com>:
> 
> > Hello Pedro,
> >
> > My recollection from when I looked into this earlier this year is that
> > the code has been wrong ever since the COM32 split, but in some versions
> > up to 6.03pre9 the PXE stack was coincidentally left loaded because of
> > random values left in registers.
> >
> > Please try this patch:
> >
> > http://www.syslinux.org/archives/2016-June/025216.html
> >
> > -- Adam
> >
> > On Mon, Nov 21, 2016 at 12:22:07AM +0100, Pedro Koschi via Syslinux wrote:
> > > Good day,
> > >
> > > I have the problem to pass  the “loaded“ undi driver to the next
> > bootloader.
> > >
> > > In current pxelinux
> > >
> > > “lernel memdisk keeppxe harddisk raw initrd::parh_to_img“
> > >
> > > always unloads undi before memdisk (or other kernel) takes control.
> > >
> > > After many tries I found that the keeppxe feature is broken starting from
> > > version 6.03 pre 9.
> > > I tried to find the reason by comparing sources 6.03 pre 8 / 6.03 pre 9
> > but
> > > can't see any keeppxe related  (obvious) changes.  Unfortunately i'm not
> > > able to offer a fix but I would be happy to see it fixed.  Many thanks!
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