1 files changed, 106 insertions, 0 deletions
diff --git a/MdePkg/Library/TdxLib/TdxLibNull.c b/MdePkg/Library/TdxLib/TdxLibNull.c
new file mode 100644
index 0000000..29b2fe7
--- /dev/null
+++ b/MdePkg/Library/TdxLib/TdxLibNull.c
@@ -0,0 +1,106 @@
+/** @file
+
+  Null stub of TdxLib
+
+  Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Uefi/UefiBaseType.h>
+#include <Library/TdxLib.h>
+
+/**
+  This function accepts a pending private page, and initialize the page to
+  all-0 using the TD ephemeral private key.
+
+  @param[in]  StartAddress     Guest physical address of the private page
+                               to accept.
+  @param[in]  NumberOfPages    Number of the pages to be accepted.
+  @param[in]  PageSize         GPA page size. Accept 1G/2M/4K page size.
+
+  @return EFI_SUCCESS
+**/
+EFI_STATUS
+EFIAPI
+TdAcceptPages (
+  IN UINT64  StartAddress,
+  IN UINT64  NumberOfPages,
+  IN UINT32  PageSize
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+/**
+  This function extends one of the RTMR measurement register
+  in TDCS with the provided extension data in memory.
+  RTMR extending supports SHA384 which length is 48 bytes.
+
+  @param[in]  Data      Point to the data to be extended
+  @param[in]  DataLen   Length of the data. Must be 48
+  @param[in]  Index     RTMR index
+
+  @return EFI_SUCCESS
+  @return EFI_INVALID_PARAMETER
+  @return EFI_DEVICE_ERROR
+
+**/
+EFI_STATUS
+EFIAPI
+TdExtendRtmr (
+  IN  UINT32  *Data,
+  IN  UINT32  DataLen,
+  IN  UINT8   Index
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+
+/**
+  This function gets the Td guest shared page mask.
+
+  The guest indicates if a page is shared using the Guest Physical Address
+  (GPA) Shared (S) bit. If the GPA Width(GPAW) is 48, the S-bit is bit-47.
+  If the GPAW is 52, the S-bit is bit-51.
+
+  @return Shared page bit mask
+**/
+UINT64
+EFIAPI
+TdSharedPageMask (
+  VOID
+  )
+{
+  return 0;
+}
+
+/**
+  This function gets the maximum number of Virtual CPUs that are usable for
+  Td Guest.
+
+  @return maximum Virtual CPUs number
+**/
+UINT32
+EFIAPI
+TdMaxVCpuNum (
+  VOID
+  )
+{
+  return 0;
+}
+
+/**
+  This function gets the number of Virtual CPUs that are usable for Td
+  Guest.
+
+  @return Virtual CPUs number
+**/
+UINT32
+EFIAPI
+TdVCpuNum (
+  VOID
+  )
+{
+  return 0;
+}