How to program PIIX4 GPO26 for output to make flashrom working on Abit BF6?

[Gelip]

After run flashrom -p internal have error:
=========================================================================
flashrom v0.9.7-r1763 on Linux 2.6.32-5-486 (i686)
flashrom is free software, get the source code at http://www.flashrom.org

Calibrating delay loop... OK.
coreboot table found at 0x9fe1c00.
Found chipset "Intel PIIX4/4E/4M". Enabling flash write... OK.
Enabling full flash access for board "abit BF6"...
ERROR: PIIX4 GPO26 not programmed for output.
FAILED!
Aborting to be safe.
Error: Programmer initialization failed.

How resolve this problem?