Re: [Xen-devel] help adding extended text modes in Hypervisor

[Edward Middleton <edward@xxxxxxxxxxxxxxx>]

Ian Pratt wrote:

> > I am trying to get the hypervisor to run in an extended text modes,
> > specifically 132x44 text mode. I don't really know much about
> > setting video modes so there may be something inherently broken with
> > my approach. I have done some Linux device drivers programming and a
> > little assembler but am probably out of my depth. I have tried
> > putting the correct VGA register settings (taken after booting into
> > 132x44 text mode vga=0x133 in regular Linux) for this mode into
> >    
> Feel free to say 'yes', but is it really worth the effort? 
>  
Ultimately it would be good being able to see most of the boot messages 
while booting.  I guess it really depends on whether its possible to get 
video.S to work (allow the same mode selection as Linux) with a simple 
hack or weather it is much more involved.
> When dom0 takes over the VGA console (which is the default mode
> of operation) you can arrange to put it into whatever mode you
> like; you just won't get the initial boot messages from Xen in
> the extended text mode.
>  
I was looking at modifying the hypervisor because I couldn't get this to 
work and couldn't find a specific reference stating it was possible.  I 
have the following lines in grub and it doesn't set the video mode
title Xen 2.0 / XenLinux 2.6.9
root (hd0,0)
kernel /boot/xen.gz dom0_mem=131072 console=vga
module /boot/vmlinuz-2.6.9-xen0 root=/dev/sda6 vga=0x133

I have tried various permutations of this with no success.

Thanks

Edward


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