problem with PCI Express expansion on board with E3825 with coreboot

asa1986

I am trying to connect pci express expansion (PCI bridge) to pci express on my board with coreboot firmwar with payload seabios.
It didnot work .
Your opinion, I should change code of coreboot or FSP?

I want to use a PCIe bridge to convert a PCIE-x1 to 2 PCIE-X1 connectors
but booting FreeBSD won't show any active bridge.

what

stephenw10

Does it see any new PCI device using pciconf -lv?

asa1986

I used pciconf -lv but it did not show any device.

I tested it on my system with Freebsd 12 and pciconf -lv and it detect chip Pericom but on board with E3825 it did not show anything .

I donot know that Coreboot support baytrial for pci express bridge or not.

stephenw10

Hmm, if it's not even seen on the pcie bus a Coreboot update is about all you can do there.

You could try a 2.5 snapshot, that's built on FreeBSD 12 but I suspect your other system would still see it in FreeBSD 11.

Steve

asa1986

Thank you.2.5 snapshot for coreboot ? or FSP ?

stephenw10

A pfSense 2.5 Snapshot: https://www.pfsense.org/snapshots/

Coreboot updates would from the manufacturer. Though if may be possible to build your own since Coreboot is open source.
Actually correcting a problem like this though is.... non-trivial!

Steve