[coreboot] legacybios updat

[Myles Watson]

On Wed, May 21, 2008 at 3:32 PM, Stefan Reinauer <stepan at coresystems.de> wrote:
> Myles Watson wrote:
>  >
>  >> -----Original Message-----
>  >> From: coreboot-bounces at coreboot.org [mailto:coreboot-bounces at coreboot.org]
>  >> On Behalf Of Kevin O'Connor
>  >> Sent: Monday, May 19, 2008 6:02 PM
>  >> To: coreboot at coreboot.org
>  >> Subject: Re: [coreboot] legacybios update
>  >>
>  >> 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
>  >>
>  >
>  >
>  > Coreboot writes the PIRQ and ACPI tables in this area.  Right now it doesn't
>  > matter since legacybios doesn't use this information, but eventually we
>  > might want to change this.
>  Also, DMI is going there, too, in my implementation that I hope to
>  publish soon.
>
>  I wonder what we do with those tables..  normal bios puts a bunch of
>  them at the end of memory. We have limited locations to put them at,
>  because the OS has to find them.
>
>  How much of the F segment is actually used by legacybios?

All of it.  The callback entry points are at fixed locations, and the
rest of the code lives there too.

> Should we put
>  that stuff into the lbtable as an option and have legacy relocate it? Or
>  is there a safe place where we can put them to begin with..?
I'm not sure.

Thanks,
Myles
>
>  Stefan
>
>