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soc/amd/cezanne: Enable GNB IO-APIC _PRT 

We can now use the GNB IO-APIC.

BUG=b:184766519
TEST=Boot guybrush to OS with `pci=nomsi amd_iommu=off noapic`

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I4df5a4583f14044d2efcde3a9de9dd85e898a11d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/53936
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Raul E Rangel 2021-05-07 12:30:49 -06:00 committed by Felix Held
parent 1ed5a63c8c
commit 506ee24e24
1 changed files with 1 additions and 2 deletions
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3
src/soc/amd/cezanne/pcie_gpp.c
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@ -65,8 +65,7 @@ static void acpi_device_write_gpp_pci_dev(const struct device *dev)
acpigen_write_ADR_pci_device(dev);
acpigen_write_STA(acpi_device_status(dev));
/* b/187083211 - Enable GNB IO-APIC */
acpigen_write_pci_FCH_PRT(dev);
acpigen_write_pci_GNB_PRT(dev);
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */