if we are sure it is behind 15.2 - one can also try to make it hidden. This way the device will be enabled no matter what. If that solves the problem - you need to investigate why coreboot does not enable the device.



On 10/16/20 3:05 PM, Peter Stuge wrote:
Paul Menzel wrote:
With the vendor firmware 6601, it is

     04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. 
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] 
(rev 09)

behind PCI bridge 00:15.2.
In the current state [1], coreboot says device 00:15.2 is disabled

Show all devs... After init.
PCI: 00:15.0: enabled 1
PCI: 00:15.1: enabled 1
PCI: 00:15.2: enabled 0

But it is enabled in the devicetree 

     device pci 15.2 on end # PCI bridge

spew log
Enabling cache
Setting up local APIC...
 apic_id: 0x11 done.
siblings = 01, CPU #1 initialized
All AP CPUs stopped (1060 loops)
CPU0: stack: 0x5fef4000 - 0x5fef5000, lowest used address 0x5fef455c, stack used: 2724 bytes
CPU1: stack: 0x5fef3000 - 0x5fef4000, lowest used address 0x5fef3dbc, stack used: 580 bytes
CPU_CLUSTER: 0 init finished in 64 msecs
PCI: 00:00.0 init
PCI: 00:00.0 init finished in 0 msecs
PCI: 00:15.0 init
PCI: 00:15.0 init finished in 0 msecs
PCI: 00:15.1 init
PCI: 00:15.1 init finished in 0 msecs
PCI: 00:18.1 init
PCI: 00:18.1 init finished in 0 msecs
Note that there is no init for 15.2 above. I don't know why, if it's
enabled in the mainboard devicetree file.

Another thought - have you compared PCI bus numbers and addresses
between vendor BIOS and coreboot? They can change around, certainly
bus numbers but wasn't there a thread a while back with addresses
being confused too?

Sorry I can't suggest anything more concrete

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