[coreboot] legacybios update

Joseph Smith joe at settoplinux.org
Tue May 20 05:13:34 CEST 2008

On Mon, 19 May 2008 20:02:13 -0400, Kevin O'Connor <kevin at koconnor.net>
> On Sun, May 18, 2008 at 03:14:22AM -0400, Kevin O'Connor wrote:
>> Hi,
>> I've just pushed a new elf payload to:
>> http://linuxtogo.org/~kevin/legacybios/bios.bin.elf-20080518
>> This version should be free of qemu dependencies.
> Just wanted to give an update.  On Sunday, Uwe was able to run some
> tests with "legacybios".  What was found:
> * coreboot-v2 can run legacybios.  It does require disabling
>   valid_area() check in in src/boot/elfboot.c
> * legacybios will start up on real hardware (tested with coreboot-v2),
>   but there were some issues with kbd init, ide init, and usleep.
>   This prevented booting a real OS.  Latest "legacybios" git should
>   address kbd init and usleep.
> * A more detailed analysis of filo shows that it has a more advanced
>   ide init (it does a pci scan for ide controllers and it has
>   "floating bus detection").  I'm going to work on advancing the
>   "legacybios" code to also do this.
> Uwe also put together a wiki page at:
> http://www.coreboot.org/LegacyBIOS
Great work Kevin and Uwe!
When you say the ide init is more advanced than filo...
Does it do cable detection (40 conducter vs 80 conductor needed for
That is one of my biggest gripes about filo...well that and UHCI/EHCI.

Joseph Smith

More information about the coreboot mailing list