[coreboot] unexpected exception errors loading vga rom

Stefan Reinauer stepan at coresystems.de
Wed Apr 29 15:11:23 CEST 2009

On 29.04.2009 14:27 Uhr, Joseph Smith wrote:
> Yes, in a perfect world I should just have to turn the device off in
> src/mainboard/thomson/ip1000/Config.lb and I would never see any traces of
> the device.
> Quote from the 82801DB datasheet LPC register 0xF2:
> "Software sets this bit to disable the AC ’97 modem controller function.
> BIOS must not enable I/O or memory address space decode, interrupt
> generation, or any other functionality of functions that are to be
> disabled."
> But just turning the device off is not performing all of the above
> functions required by the southbridge. If anyone has any suggestions on how
> to really disable this device without touching
> src/southbridge/intel/i82801xx/i82801xx_ac97.c I would be glad to hear
> them....

The code in src/southbridhe/i82801xx/i82801xx.c tries to take care of
the F2 register settings. So, if you don't have
a device pci 1f.6 off end in your config.lb it might just get enabled by
i82801xx.c again

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