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authorPaul Menzel <pmenzel@molgen.mpg.de>2020-10-17 18:11:51 +0200
committerFelix Held <felix-coreboot@felixheld.de>2020-11-20 16:01:16 +0000
commitbb1ada6d3a2866a6839ad2d44763184bc893f72f (patch)
treecbe80d343a75e97161f0c8d9b3802eb137c5e876 /src/mainboard/bap
parent33f4ec82173f54a1f1f94506ca20fcec86953246 (diff)
mb/asus/f2a85-m_pro: Enable PCIe bridge 00:15.2 in AGESA
Currently, the PCIe bridge 00:15.2 is not detected by coreboot, causing the connected network device also to be missing. This is caused by not configuring the third of the four PCIe General Purpose Ports (GPP) of the AMD Fusion Controller Hub (FCH), which can be exposed as one to four PCIe devices. So, enable it in AGESA but disable enumeration in coreboot. Otherwise, the serial console stops working in romstage after […] PCI: 00:15.1 bridge ctrl <- 0013 PCI: 00:15.1 cmd <- 06 PCI: 00:15.2 bridge ctrl <- 0013 PCI: 00:15.2 cmd <- 07 and the system hangs in the payload (SeaBIOS banner is shown on VGA attached monitor). TEST=Serial console and payload works, and Linux 5.10-rc2 configures PCIe bridge. Output of `lspci -t`: -[0000:00]-+-00.0 +-00.2 +-01.0 +-01.1 +-10.0 +-10.1 +-11.0 +-12.0 +-12.2 +-13.0 +-13.2 +-14.0 +-14.2 +-14.3 +-14.4-[01]-- +-14.5 +-15.0-[02]-- +-15.1-[03]----00.0 +-15.2-[04]----00.0 +-18.0 +-18.1 +-18.2 +-18.3 +-18.4 \-18.5 Change-Id: Ia1d60a212b0d249c7d8b3f8ec16baf5e93c985da Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46527 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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