1 files changed, 114 insertions, 0 deletions
diff --git a/SecurityPkg/Library/Tpm2CommandLib/Tpm2Miscellaneous.c b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Miscellaneous.c
new file mode 100644
index 000000000..914ad7f70
--- /dev/null
+++ b/SecurityPkg/Library/Tpm2CommandLib/Tpm2Miscellaneous.c
@@ -0,0 +1,114 @@
+/** @file
+  Implement TPM2 Miscellanenous related command.
+
+Copyright (c) 2013, 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
+which 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.
+
+**/
+
+#include <IndustryStandard/UefiTcgPlatform.h>
+#include <Library/Tpm2CommandLib.h>
+#include <Library/Tpm2DeviceLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+
+#pragma pack(1)
+
+typedef struct {
+  TPM2_COMMAND_HEADER       Header;
+  TPMI_RH_HIERARCHY_AUTH    AuthHandle;
+  UINT32                    AuthSessionSize;
+  TPMS_AUTH_COMMAND         AuthSession;
+  UINT32                    AlgorithmSet;
+} TPM2_SET_ALGORITHM_SET_COMMAND;
+
+typedef struct {
+  TPM2_RESPONSE_HEADER       Header;
+  UINT32                     AuthSessionSize;
+  TPMS_AUTH_RESPONSE         AuthSession;
+} TPM2_SET_ALGORITHM_SET_RESPONSE;
+
+#pragma pack()
+
+/**
+  This command allows the platform to change the set of algorithms that are used by the TPM.
+  The algorithmSet setting is a vendor-dependent value.
+
+  @param[in]  AuthHandle              TPM_RH_PLATFORM
+  @param[in]  AuthSession             Auth Session context
+  @param[in]  AlgorithmSet            A TPM vendor-dependent value indicating the
+                                      algorithm set selection
+
+  @retval EFI_SUCCESS      Operation completed successfully.
+  @retval EFI_DEVICE_ERROR Unexpected device behavior.
+**/
+EFI_STATUS
+EFIAPI
+Tpm2SetAlgorithmSet (
+  IN  TPMI_RH_PLATFORM          AuthHandle,
+  IN  TPMS_AUTH_COMMAND         *AuthSession,
+  IN  UINT32                    AlgorithmSet
+  )
+{
+  EFI_STATUS                                 Status;
+  TPM2_SET_ALGORITHM_SET_COMMAND             SendBuffer;
+  TPM2_SET_ALGORITHM_SET_RESPONSE            RecvBuffer;
+  UINT32                                     SendBufferSize;
+  UINT32                                     RecvBufferSize;
+  UINT8                                      *Buffer;
+  UINT32                                     SessionInfoSize;
+
+  //
+  // Construct command
+  //
+  SendBuffer.Header.tag = SwapBytes16(TPM_ST_SESSIONS);
+  SendBuffer.Header.commandCode = SwapBytes32(TPM_CC_SetAlgorithmSet);
+
+  SendBuffer.AuthHandle = SwapBytes32 (AuthHandle);
+
+  //
+  // Add in Auth session
+  //
+  Buffer = (UINT8 *)&SendBuffer.AuthSession;
+
+  // sessionInfoSize
+  SessionInfoSize = CopyAuthSessionCommand (AuthSession, Buffer);
+  Buffer += SessionInfoSize;
+  SendBuffer.AuthSessionSize = SwapBytes32(SessionInfoSize);
+
+  //
+  // Real data
+  //
+  WriteUnaligned32 ((UINT32 *)Buffer, SwapBytes32(AlgorithmSet));
+  Buffer += sizeof(UINT32);
+
+  SendBufferSize = (UINT32)((UINTN)Buffer - (UINTN)&SendBuffer);
+  SendBuffer.Header.paramSize = SwapBytes32 (SendBufferSize);
+
+  //
+  // send Tpm command
+  //
+  RecvBufferSize = sizeof (RecvBuffer);
+  Status = Tpm2SubmitCommand (SendBufferSize, (UINT8 *)&SendBuffer, &RecvBufferSize, (UINT8 *)&RecvBuffer);
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+
+  if (RecvBufferSize < sizeof (TPM2_RESPONSE_HEADER)) {
+    DEBUG ((EFI_D_ERROR, "Tpm2SetAlgorithmSet - RecvBufferSize Error - %x\n", RecvBufferSize));
+    return EFI_DEVICE_ERROR;
+  }
+  if (SwapBytes32(RecvBuffer.Header.responseCode) != TPM_RC_SUCCESS) {
+    DEBUG ((EFI_D_ERROR, "Tpm2SetAlgorithmSet - responseCode - %x\n", SwapBytes32(RecvBuffer.Header.responseCode)));
+    return EFI_DEVICE_ERROR;
+  }
+
+  return EFI_SUCCESS;
+}