Jan Beulich
2005-Jul-05 13:22 UTC
Re: [Xen-devel] beginnings of allowing more than the basic 80x25 VGAscreen resolution
>> IIRC there are some fields in the multiboot info header for thatkind>> of stuff, so grub could setup that and pass on the info to xen (and >> xen in turn to the dom0 kernel?). >> >> multiboot kernels are started in 32-bit protected mode by the boot >> loader, i.e. xen has (unlike linux) no 16-bit startup code. Thus >> doing 16-bit BIOS calls once xen is running is a bit difficuilt ... > >GRUB has code for switching back into real mode to do bios calls. We >could take that, plus video.S, and put them in Xen. Then add an info >structure for passing video info up to domain0. It''s pretty ugly, butI>think there is no nice solution here. Would we also need vesa/vga >driver code from Linux for setting up font data in some graphicsmodes? Yes that would clearly be necessary, but perhaps a much more streamlined mechanism would do for XEN. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel