[coreboot] how to change PCI device's PFA

Hilbert Tu(杜睿哲_Pegatron) Hilbert_Tu at pegatroncorp.com
Mon Sep 3 11:54:53 CEST 2018

Hi Lance,

Got it. I’ll check that. Thanks.


From: Lance Zhao [mailto:lance.zhao at gmail.com]
Sent: Saturday, September 01, 2018 1:29 AM
To: Hilbert Tu(杜睿哲_Pegatron)
Cc: coreboot at coreboot.org
Subject: Re: [coreboot] how to change PCI device's PFA

Those devices have been fixed from chipset, I don't think any software side can change that. I will prefer to have a quick scan of PCI spec 2.2 first, which mentioned that clearly.

On Thu, Aug 30, 2018 at 11:44 PM Hilbert Tu(杜睿哲_Pegatron) <Hilbert_Tu at pegatroncorp.com<mailto:Hilbert_Tu at pegatroncorp.com>> wrote:

In my devicetree.cb of Intel Harcuvar CRB, I see the following PCI configuration:
device pci 14.0 on end # SATA Controller 1
device pci 15.0 on end # XHCI USB Controller

Can I change the device number for each different PCI device? For example,
device pci 16.0 on end # SATA Controller 1
device pci 17.0 on end # XHCI USB Controller

Is this PCI enumeration same in Coreboot and kernel? Or can I change it dynamically?

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