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-rw-r--r--OvmfPkg/OvmfPkgIa32X64.dsc3
1 files changed, 3 insertions, 0 deletions
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 123ac31e01..73e8c987b5 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -302,6 +302,9 @@
!endif
!endif
+ # IRQs 5, 9, 10, 11 are level-triggered
+ gPcAtChipsetPkgTokenSpaceGuid.Pcd8259LegacyModeEdgeLevel|0x0E20
+
[PcdsFixedAtBuild.X64]
!if $(SECURE_BOOT_ENABLE) == TRUE
# override the default values from SecurityPkg to ensure images from all sources are verified in secure boot