On Wed, Oct 26, 2011 at 12:16:32AM +0100, Julian Pidancet wrote: > Hi, > > I stumbled across the vgasrc directory in the SeaBIOS git tree which > seem to contain the source of a VGA Bios. I havn't found any related > documentation nor announcements regarding this, and there is no > Makefiles or scripts to build it. That's why I'm enquiring here about > the status of this project.
You can build the vgabios by running: make out/vgabios.bin There was a brief note on the vga code some time back: http://www.coreboot.org/pipermail/coreboot/2009-May/047775.html > I've got several questions: > - What is the general status of this project ? I started converting the VGA bios from the "lgpl vga bios" project ( http://savannah.nongnu.org/projects/vgabios/ ) a couple of years ago. I converted the base code, but did not have time to convert the "VBE" or the "cirrus" code. There was also an effort a few years back to get the code running on real hardware that had some success. > - Is this code intended to be executed in a 32bit environment by > transitionning from 16bit to 32bit mode for each BIOS call as SeaBIOS > already does ? The current seabios vgabios code runs exclusively in 16bit mode. (Note, SeaBIOS also has some calls handled entirely in 16bit mode as well.) > - Is this code able to run independantly from SeaBIOS ? It should - but I've never tested it that way. > - How can I build the sources ? make out/vgabios.bin > I am currently working on a emulated graphic adapter for Xen and I > would like to implement a VBE driver for it. This VGA BIOS seems to be > a good base for that kind of work. Would that be possible ? It should work. Ideally, someone would complete the port of the "lgpl vgabios". This involves translating the remaining 16bit assembler to C code and then doing lots of testing on the result. -Kevin -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
