[coreboot] AMD platform: IO-APIC => Local APIC delivery modes

Andriy Gapon avg at FreeBSD.org
Mon Oct 10 09:25:03 CEST 2016

On 08/10/2016 23:57, Rudolf Marek wrote:
> I did the HPET NMI generator on Intel PCH, it works fine. I just fill the MSI
> addr/data in a way that it was delivering NMI to certain CPU - physical delivery
> to a CPU with a certain ID.
> If this does not work on AMD, perhaps there is some problem with chipset
> configuration. Please check the HT specs and try to sort out the MT3 setup.

I've just got this working on my AMD hardware too.
I had to use the same HT encoding for the Delivery Mode / Message Type bits as
with IO-APIC.

Andriy Gapon

More information about the coreboot mailing list