Vlv2DeviceRefCodePkg&Vlv2DevicePkg:Add sample WSMT table.

This is an sample WSMT table, which we only
update BIT0 and BIT1 of Protections flags fields.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: lushifex <shifeix.a.lu@intel.com>
Reviewed-by: David Wei <david.wei@intel.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatform.c b/Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatform.c
index db1b5a5eeb..8a883f2a09 100644
--- a/Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatform.c
+++ b/Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatform.c
@@ -58,6 +58,7 @@ Abstract:
 #include <PchAccess.h>

 #include <Guid/Vlv2Variable.h>

 #include <Guid/PlatformCpuInfo.h>

+#include <IndustryStandard/WindowsSmmSecurityMitigationTable.h>

 

 

 CHAR16    EfiPlatformCpuInfoVariable[] = L"PlatformCpuInfo";

@@ -238,6 +239,7 @@ PlatformUpdateTables (
   UINT8                                                       TempVal;

   EFI_ACPI_3_0_IO_APIC_STRUCTURE                              *IOApicType;

   EFI_ACPI_3_0_MULTIPLE_APIC_DESCRIPTION_TABLE_HEADER         *APICTableHeader;

+  EFI_ACPI_WSMT_TABLE                                         *WsmtTable;

 

   CurrPtr                 = NULL;

   EndPtr                  = NULL;

@@ -599,6 +601,17 @@ PlatformUpdateTables (
       gBS->FreePool (OcurModelStringBuffer);

       gBS->FreePool (OcurRefDataBlockBuffer);

       break;

+

+

+    case EFI_ACPI_WINDOWS_SMM_SECURITY_MITIGATION_TABLE_SIGNATURE:

+      WsmtTable = (EFI_ACPI_WSMT_TABLE *) Table;

+       //

+       // Update Microsoft WSMT table Protections flags.

+       //

+      WsmtTable->ProtectionFlags = ((WsmtTable->ProtectionFlags) | (EFI_WSMT_PROTECTION_FLAGS_FIXED_COMM_BUFFERS | EFI_WSMT_PROTECTION_FLAGS_COMM_BUFFER_NESTED_PTR_PROTECTION ));

+      break;

+

+

     default:

       break;

   }