BIT0: This is to control if a platform wants to enable VTd based protection during boot. BIT1: This is to control if a platform wants to keep VTd enabled at ExitBootService.
The default configuration is BIT0:1, BIT1:0. Cc: Star Zeng <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao <[email protected]> --- IntelSiliconPkg/IntelSiliconPkg.dec | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/IntelSiliconPkg/IntelSiliconPkg.dec b/IntelSiliconPkg/IntelSiliconPkg.dec index 663a232..2fc6379 100644 --- a/IntelSiliconPkg/IntelSiliconPkg.dec +++ b/IntelSiliconPkg/IntelSiliconPkg.dec @@ -44,3 +44,9 @@ # { 0x56752da9, 0xde6b, 0x4895, 0x88, 0x19, 0x19, 0x45, 0xb6, 0xb7, 0x6c, 0x22 } gIntelSiliconPkgTokenSpaceGuid.PcdIntelGraphicsVbtFileGuid|{ 0xa9, 0x2d, 0x75, 0x56, 0x6b, 0xde, 0x95, 0x48, 0x88, 0x19, 0x19, 0x45, 0xb6, 0xb7, 0x6c, 0x22 }|VOID*|0x00000001 + ## The mask is used to control VTd behavior.<BR><BR> + # BIT0: Enable IOMMU during boot. + # BIT1: Enable IOMMU on exit boot service. + # @Prompt The policy for VTd driver behavior. + gIntelSiliconPkgTokenSpaceGuid.PcdVTdPolicyPropertyMask|1|UINT8|0x00000002 + -- 2.7.4.windows.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
