[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.


Regards,
Patrick
-- 
Patrick Georgi
SINA-Development - High Security
secunet Security Networks AG - Mergenthalerallee 77 - 65760 Eschborn, Germany
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