[coreboot] Re: Coreboot not scanning all PCI devices

[Mike Banon]

Hi there, open a devicetree.cb file for your board, located at
somewhere like ./coreboot/src/mainboard/[board_vendor]/[board_model]/devicetree.cb
There will be the lines like

device pci 0.0 on end
device pci 0.2 on end
device pci 1.0 on end
device pci 1.1 on end
device pci 2.0 off end

You need to either change "off" to "on" or add some new lines with
"on". Please note that sometimes a coreboot can't boot with some of
these extra devices enabled.

Best regards,
Mike Banon

On Tue, Sep 17, 2019 at 10:04 AM  wrote:
> Hi,
>
> I have an intel Xeon-D board with vendor BIOS and I trying to get it to work with the Coreboot.
>
> I am successful in booting OS through grub payload from coreboot-4.9-1259-gc4f3972-dirty.
>
> The problem is some of the PCI devices are missing while scanning PCI in coreboot but detecting all PCI devices properly in vendor bios.
>
> Below is vendor BIOS PCI Listing
>
> 00:00.0 Host bridge: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DMI2 (rev 03)
> 00:01.0 PCI bridge: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 1 (rev 03)
> 00:01.1 PCI bridge: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 1 (rev 03)
> 00:02.0 PCI bridge: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 2 (rev 03)
> 00:02.2 PCI bridge: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 2 (rev 03)
> 00:03.0 PCI bridge: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 3 (rev 03)
> 00:03.2 PCI bridge: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 3 (rev 03)
> 00:03.3 PCI bridge: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 3 (rev 03)
> 00:05.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Map/VTd_Misc/System Management (rev 03)
> 00:05.1 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D IIO Hot Plug (rev 03)
> 00:05.2 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D IIO RAS/Control Status/Global Errors (rev 03)
> 00:05.4 PIC: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D I/O APIC (rev 03)
> 00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
> 00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
> 00:1c.4 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #5 (rev d5)
> 00:1c.6 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #7 (rev d5)
> 00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05)
> 00:1f.0 ISA bridge: Intel Corporation C224 Series Chipset Family Server Standard SKU LPC Controller (rev 05)
> 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
> 00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
> 01:00.0 Ethernet controller: Intel Corporation 82580 Gigabit Network Connection (rev 01)
> 01:00.1 Ethernet controller: Intel Corporation 82580 Gigabit Network Connection (rev 01)
> 01:00.2 Ethernet controller: Intel Corporation 82580 Gigabit Network Connection (rev 01)
> 01:00.3 Ethernet controller: Intel Corporation 82580 Gigabit Network Connection (rev 01)
> 02:00.0 Ethernet controller: Intel Corporation 82580 Gigabit Network Connection (rev 01)
> 02:00.1 Ethernet controller: Intel Corporation 82580 Gigabit Network Connection (rev 01)
> 02:00.2 Ethernet controller: Intel Corporation 82580 Gigabit Network Connection (rev 01)
> 02:00.3 Ethernet controller: Intel Corporation 82580 Gigabit Network Connection (rev 01)
> 03:00.0 System peripheral: Intel Corporation Xeon Processor D Family QuickData Technology Register DMA Channel 0
> 03:00.1 System peripheral: Intel Corporation Xeon Processor D Family QuickData Technology Register DMA Channel 1
> 03:00.2 System peripheral: Intel Corporation Xeon Processor D Family QuickData Technology Register DMA Channel 2
> 03:00.3 System peripheral: Intel Corporation Xeon Processor D Family QuickData Technology Register DMA Channel 3
> 04:00.0 Ethernet controller: Intel Corporation Ethernet Connection X552/X557-AT 10GBASE-T
> 04:00.1 Ethernet controller: Intel Corporation Ethernet Connection X552/X557-AT 10GBASE-T
> 07:00.0 PCI bridge: Integrated Device Technology, Inc. [IDT] Device 808c (rev 02)
> 08:02.0 PCI bridge: Integrated Device Technology, Inc. [IDT] Device 808c (rev 02)
> 08:04.0 PCI bridge: Integrated Device Technology, Inc. [IDT] Device 808c (rev 02)
> 08:06.0 PCI bridge: Integrated Device Technology, Inc. [IDT] Device 808c (rev 02)
> 08:08.0 PCI bridge: Integrated Device Technology, Inc. [IDT] Device 808c (rev 02)
> 08:0c.0 PCI bridge: Integrated Device Technology, Inc. [IDT] Device 808c (rev 02)
> 08:10.0 PCI bridge: Integrated Device Technology, Inc. [IDT] Device 808c (rev 02)
> 08:14.0 PCI bridge: Integrated Device Technology, Inc. [IDT] Device 808c (rev 02)
> 11:00.0 PCI bridge: Tundra Semiconductor Corp. Device 8114 (rev 03)
> 13:00.0 VGA compatible controller: Silicon Motion, Inc. Device 0768 (rev 03)
> 14:00.0 Memory controller: Xilinx Corporation Device 7012
> ff:0b.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R3 QPI Link 0/1 (rev 03)
> ff:0b.1 Performance counters: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R3 QPI Link 0/1 (rev 03)
> ff:0b.2 Performance counters: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R3 QPI Link 0/1 (rev 03)
> ff:0b.3 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R3 QPI Link Debug (rev 03)
> ff:0c.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0c.1 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0c.2 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0c.3 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0c.4 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0c.5 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0c.6 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0c.7 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0f.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0f.4 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0f.5 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:0f.6 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent (rev 03)
> ff:10.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R2PCIe Agent (rev 03)
> ff:10.1 Performance counters: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R2PCIe Agent (rev 03)
> ff:10.5 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Ubox (rev 03)
> ff:10.6 Performance counters: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Ubox (rev 03)
> ff:10.7 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Ubox (rev 03)
> ff:12.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Home Agent 0 (rev 03)
> ff:12.1 Performance counters: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Home Agent 0 (rev 03)
> ff:13.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Target Address/Thermal/RAS (rev 03)
> ff:13.1 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Target Address/Thermal/RAS (rev 03)
> ff:13.2 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel Target Address Decoder (rev 03)
> ff:13.3 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel Target Address Decoder (rev 03)
> ff:13.4 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel Target Address Decoder (rev 03)
> ff:13.5 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel Target Address Decoder (rev 03)
> ff:13.6 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Broadcast (rev 03)
> ff:13.7 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Global Broadcast (rev 03)
> ff:14.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 0 Thermal Control (rev 03)
> ff:14.1 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 1 Thermal Control (rev 03)
> ff:14.2 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 0 Error (rev 03)
> ff:14.3 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 1 Error (rev 03)
> ff:14.4 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Interface (rev 03)
> ff:14.5 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Interface (rev 03)
> ff:14.6 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Interface (rev 03)
> ff:14.7 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Interface (rev 03)
> ff:15.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 2 Thermal Control (rev 03)
> ff:15.1 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 3 Thermal Control (rev 03)
> ff:15.2 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 2 Error (rev 03)
> ff:15.3 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 3 Error (rev 03)
> ff:1e.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit (rev 03)
> ff:1e.1 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit (rev 03)
> ff:1e.2 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit (rev 03)
> ff:1e.3 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit (rev 03)
> ff:1e.4 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit (rev 03)
> ff:1f.0 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit (rev 03)
> ff:1f.2 System peripheral: Intel Corporation Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit (rev 03)
>
> From the coreboot debug output, it looks coreboot isn't scanning PCI buses 0 with function number 1  (00:01.1) and function number 2 and 3 (00:03.2,00:03.3).pci_scan_bus in src/device/pci_device.c seems to scan PCI bridges and devices behind them.
>
> Below is the device missing in coreboot PCI listing which differs from the vendor firmware:
>
> 00:01.1
> 00:03.2
> 00:03.3
>
> +-01.1-[02]--+-00.0  Intel Corporation 82580 Gigabit Network Connection
>              |       +-00.1  Intel Corporation 82580 Gigabit Network Connection
>              |       +-00.2  Intel Corporation 82580 Gigabit Network Connection
>              |       -00.3  Intel Corporation 82580 Gigabit Network Connection
>
> +-03.2-[07-0f]----00.0-[08-0f]--+-02.0-[09]--
>              |                                    +-04.0-[0a]--
>              |                                    +-06.0-[0b]--
>              |                                    +-08.0-[0c]--
>              |                                    +-0c.0-[0d]--
>              |                                    +-10.0-[0e]--
>              |                                     -14.0-[0f]--
>     +-03.3-[10]--
>
> pci_probe_dev function in pci_device.c seems to probe with respect to device number and I couldn't find where the bus device function number is set
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