[coreboot] i82801gx: SMI from "GPE0_STS: USB1"

Aaron Durbin adurbin at chromium.org
Thu Jun 13 15:09:31 CEST 2013

On Thu, Jun 13, 2013 at 4:39 AM, Константин Аладышев
<aladyshev at nicevt.ru> wrote:
>> I assume the USB controller is still asserting its event. You'll need
>> to clear USB1_EN in GPE0_EN. That should stop it. From what I can tell
>> in the code GPE0_EN is only messed with when entering S5. So you may
>> want to ensure that is cleared when setting up SMIs in coreboot.
>> -Aaron
> Ok, i can disable USB1_EN, and it helps. But i want to enable it before jump
> to OS waking vector, to be able to resume from USB keyboard again.
> And once i enable it, coreboot starts these endless SMIs.
> How can i stop USB controller from asserting this event?

I think the OS will re-initialize the enable bits before going back to
sleep. Have you tried leaving it disabled?

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