[coreboot] ACPI patches for Tyan s2895, s2892, s2891

Rudolf Marek r.marek at assembler.cz
Tue Mar 10 15:19:37 CET 2009

> I don't think I have any.

Check if some superIO has not irq9 configured.

>> Generally IRQ9 is used as ACPI SCI int.
>> Just pressing the power button generates the IRQ for example. To make it
>> work you need:
>> 1) Set IRQ9 in chipset as ACPI IRQ

> I don't know where I would do this.  I'm assuming you mean southbridge
> when you say chipset.

Yes. Maybe it is hardcoded in chip (IRQ9).

   9:          1        276         15      99709   IO-APIC-fasteoi   acpi

Huh quite big number. Is it from coreboot or legacy BIOS? Maybe some ACPI GP 
timer is generating the IRQ9?


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