Re: [Etherboot-developers] 5.1.5 Menu & Console problems

[<ebi...@ln...>]

ke...@us... (Ken Yap) writes:

> >> Ok that works better now, it can successfully load an image after
> >> returning from a menu. Now the next problem:
> >
> >Is this problem independent of menus?
> 
> I haven't tested it without a menu actually, now that you mention it but
> it shouldn't matter if the image is successfully loaded no?
> 
> >The Linux code should not have a20 problems.  It has been a little
> >while since I tested mkelf but it was working at the time I made the
> >patch to generate the checksums.
> >
> >And note some machines have a20 set permanently on.  So while we may
> >confuse some machine's BIOS's by not restoring a20 that should be all
> >we confuse.
> 
> I think you're right there. BTW the Linux image was generated by a
> recent mkelf so should have checksumming.

Interesting. It definitely needs some tracking down.  

An interesting data point with respect to booting linux would
be to try mkelfImage
ftp://ftp.lnxi.com/pub/src/mkelfImage/mkelfImage-2.0.tar.gz

It does fewer bios calls, than the standard linux kernel, or none at
all when running under LinuxBIOS, and in general the images it makes
tend to work in more difficult situations.

With the checksum in place that should at least confirm the data was
in memory correctly at one point.  Hopefully I can reproduce this and
give some amount of comment.

Eric