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...@intel.com> --- Vlv2DeviceRefCodePkg/AcpiTablesPCAT/AcpiTables.inf | 3 +- Vlv2DeviceRefCodePkg/AcpiTablesPCAT/Wsmt/Wsmt.aslc | 60 ++++++++++++++++++++++ Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatform.c | 13 +++++ 3 files changed, 75 insertions(+), 1 deletion(-) create mode 100644 Vlv2DeviceRefCodePkg/AcpiTablesPCAT/Wsmt/Wsmt.aslc diff --git a/Vlv2DeviceRefCodePkg/AcpiTablesPCAT/AcpiTables.inf b/Vlv2DeviceRefCodePkg/AcpiTablesPCAT/AcpiTables.inf index 9c00651..e9a7d80 100644 --- a/Vlv2DeviceRefCodePkg/AcpiTablesPCAT/AcpiTables.inf +++ b/Vlv2DeviceRefCodePkg/AcpiTablesPCAT/AcpiTables.inf @@ -3,11 +3,11 @@ # # Build acpi table data required by system boot. # All .asi files tagged with "ToolCode="DUMMY"" in following file list are device description and are included # by top level ASL file which will be dealed with by asl.exe application. # -# Copyright (c) 1999 - 2015, Intel Corporation. All rights reserved +# Copyright (c) 1999 - 2016, Intel Corporation. All rights reserved # # This program and the accompanying materials are licensed and made available under # the terms and conditions of the BSD License that accompanies this distribution. # The full text of the license may be found at # http://opensource.org/licenses/bsd-license.php. @@ -35,10 +35,11 @@ Facp/Facp.aslc Madt/Madt30.aslc Mcfg/Mcfg.aslc Hpet/Hpet.aslc Lpit/Lpit.aslc + Wsmt/Wsmt.aslc [Packages] MdePkg/MdePkg.dec Vlv2TbltDevicePkg/PlatformPkg.dec diff --git a/Vlv2DeviceRefCodePkg/AcpiTablesPCAT/Wsmt/Wsmt.aslc b/Vlv2DeviceRefCodePkg/AcpiTablesPCAT/Wsmt/Wsmt.aslc new file mode 100644 index 0000000..4142201 --- /dev/null +++ b/Vlv2DeviceRefCodePkg/AcpiTablesPCAT/Wsmt/Wsmt.aslc @@ -0,0 +1,60 @@ +/*++ + Copyright (c) 2016, Intel Corporation. All rights reserved.<BR> + + This program and the accompanying materials are licensed and made available under + the terms and conditions of the BSD License that accompanies this distribution. + The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php. + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + + + +Module Name: + + Wsmt.c + +Abstract: + + This file contains a structure definition for the Windows SMM Security + Mitigations Table (WSMT). + +++*/ + +// +// Statements that include other files +// +#include "AcpiTablePlatform.h" +#include <IndustryStandard/WindowsSmmSecurityMitigationTable.h> + +// +// WSMT Table definition +// +EFI_ACPI_WSMT_TABLE WSMT = { + EFI_ACPI_WINDOWS_SMM_SECURITY_MITIGATION_TABLE_SIGNATURE, + sizeof (EFI_ACPI_WSMT_TABLE), + EFI_WSMT_TABLE_REVISION, + // + // Checksum will be updated at runtime + // + 0, + EFI_ACPI_OEM_ID, // OEMID is a 6 bytes long field + EFI_ACPI_OEM_TABLE_ID, // OEM table identification(8 bytes long) + EFI_ACPI_OEM_REVISION, // OEM revision + EFI_ACPI_CREATOR_ID, // ASL compiler vendor ID + EFI_ACPI_CREATOR_REVISION, // ASL compiler revision number + 0x00000000, // Protection flag +}; + +VOID* +ReferenceAcpiTable ( + VOID + ) +{ + // + // Reference the table being generated to prevent the optimizer from + // removing the data structure from the executable + // + return (VOID*)&WSMT; +} diff --git a/Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatform.c b/Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatform.c index db1b5a5..8a883f2 100644 --- a/Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatform.c +++ b/Vlv2TbltDevicePkg/AcpiPlatform/AcpiPlatform.c @@ -56,10 +56,11 @@ Abstract: #include <Guid/AcpiTableStorage.h> #include <Guid/EfiVpdData.h> #include <PchAccess.h> #include <Guid/Vlv2Variable.h> #include <Guid/PlatformCpuInfo.h> +#include <IndustryStandard/WindowsSmmSecurityMitigationTable.h> CHAR16 EfiPlatformCpuInfoVariable[] = L"PlatformCpuInfo"; CHAR16 gACPIOSFRModelStringVariableName[] = ACPI_OSFR_MODEL_STRING_VARIABLE_NAME; CHAR16 gACPIOSFRRefDataBlockVariableName[] = ACPI_OSFR_REF_DATA_BLOCK_VARIABLE_NAME; @@ -236,10 +237,11 @@ PlatformUpdateTables ( UINTN LocalApicCounter; EFI_PROCESSOR_INFORMATION ProcessorInfoBuffer; 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; ApicPtr = NULL; LocalApicCounter = 0; @@ -597,10 +599,21 @@ PlatformUpdateTables ( } gBS->FreePool (OcurMfgStringBuffer); 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; } // -- 2.6.2.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
