[coreboot] self modifying code in intel vga bios?

Georgi, Patrick Patrick.Georgi at secunet.com
Tue Mar 8 11:01:57 CET 2011

Am Dienstag, den 08.03.2011, 10:28 +0100 schrieb cinap_lenrek at gmx.de:
> i know that the rom area is usualy cached in ram but to catch mistakes
> i disallow writing to the rom area...  fish will make full traces
> later this day...  it could be just a screwup on my side...
> just curious :)
I saw Intel VGABIOSes write to that area, and it was required for proper
operation of the device later. See r6251 of coreboot where I changed
YABEL's behaviour to account for that.

Patrick Georgi
SINA-Development - High Security
secunet Security Networks AG - Mergenthalerallee 77 - 65760 Eschborn, Germany
Phone +49 201 54 54-3610 - Fax +49 201 54 54-1325 - www.secunet.com 

Sitz: Kronprinzenstraße 30, 45128 Essen / Amtsgericht Essen HRB 13615
Vorstand: Dr. Rainer Baumgart (Vors.), Thomas Koelzer, Thomas Pleines
Aufsichtsratsvorsitzender: Dr. Karsten Ottenberg
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: This is a digitally signed message part
URL: <http://www.coreboot.org/pipermail/coreboot/attachments/20110308/067d2cbc/attachment.sig>

More information about the coreboot mailing list