SecurityPkg: Fix spelling errors

[mirror_edk2.git] / SecurityPkg / Library / Tpm2DeviceLibDTpm / Tpm2DeviceLibDTpm.c

diff --git a/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2DeviceLibDTpm.c b/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2DeviceLibDTpm.c
index 7d10dbbe47dba64e6f42bd925bb169641bb0d2cc..42e1ecbce95a6bf7afc56cfcdb4130435d82111b 100644 (file)
--- a/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2DeviceLibDTpm.c
+++ b/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2DeviceLibDTpm.c
@@ -1,15 +1,9 @@
 /** @file\r
-  Ihis library is TPM2 DTPM device lib.\r
+  This library is TPM2 DTPM device lib.\r
   Choosing this library means platform uses and only uses DTPM device as TPM2 engine.\r
 \r
-Copyright (c) 2013, Intel Corporation. All rights reserved. <BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution.  The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+Copyright (c) 2013 - 2018, Intel Corporation. All rights reserved. <BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
@@ -17,6 +11,31 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/BaseMemoryLib.h>\r
 #include <Library/DebugLib.h>\r
 #include <Library/Tpm2DeviceLib.h>\r
+#include <Library/PcdLib.h>\r
+\r
+/**\r
+  Return PTP interface type.\r
+\r
+  @param[in] Register                Pointer to PTP register.\r
+\r
+  @return PTP interface type.\r
+**/\r
+TPM2_PTP_INTERFACE_TYPE\r
+Tpm2GetPtpInterface (\r
+  IN VOID *Register\r
+  );\r
+\r
+/**\r
+  Return PTP CRB interface IdleByPass state.\r
+\r
+  @param[in] Register                Pointer to PTP register.\r
+\r
+  @return PTP CRB interface IdleByPass state.\r
+**/\r
+UINT8\r
+Tpm2GetIdleByPass (\r
+  IN VOID *Register\r
+  );\r
 \r
 /**\r
   This service enables the sending of commands to the TPM2.\r
@@ -28,7 +47,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 \r
   @retval EFI_SUCCESS            The command byte stream was successfully sent to the device and a response was successfully received.\r
   @retval EFI_DEVICE_ERROR       The command was not successfully sent to the device or a response was not successfully received from the device.\r
-  @retval EFI_BUFFER_TOO_SMALL   The output parameter block is too small. \r
+  @retval EFI_BUFFER_TOO_SMALL   The output parameter block is too small.\r
 **/\r
 EFI_STATUS\r
 EFIAPI\r
@@ -62,7 +81,7 @@ DTpm2RequestUseTpm (
 \r
   @retval EFI_SUCCESS            The command byte stream was successfully sent to the device and a response was successfully received.\r
   @retval EFI_DEVICE_ERROR       The command was not successfully sent to the device or a response was not successfully received from the device.\r
-  @retval EFI_BUFFER_TOO_SMALL   The output parameter block is too small. \r
+  @retval EFI_BUFFER_TOO_SMALL   The output parameter block is too small.\r
 **/\r
 EFI_STATUS\r
 EFIAPI\r
@@ -114,3 +133,33 @@ Tpm2RegisterTpm2DeviceLib (
 {\r
   return EFI_UNSUPPORTED;\r
 }\r
+\r
+/**\r
+  The function caches current active TPM interface type.\r
+\r
+  @retval EFI_SUCCESS   DTPM2.0 instance is registered, or system does not support register DTPM2.0 instance\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Tpm2DeviceLibConstructor (\r
+  VOID\r
+  )\r
+{\r
+  TPM2_PTP_INTERFACE_TYPE  PtpInterface;\r
+  UINT8                    IdleByPass;\r
+\r
+  //\r
+  // Cache current active TpmInterfaceType only when needed\r
+  //\r
+  if (PcdGet8(PcdActiveTpmInterfaceType) == 0xFF) {\r
+    PtpInterface = Tpm2GetPtpInterface ((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));\r
+    PcdSet8S(PcdActiveTpmInterfaceType, PtpInterface);\r
+  }\r
+\r
+  if (PcdGet8(PcdActiveTpmInterfaceType) == Tpm2PtpInterfaceCrb && PcdGet8(PcdCRBIdleByPass) == 0xFF) {\r
+    IdleByPass = Tpm2GetIdleByPass((VOID *) (UINTN) PcdGet64 (PcdTpmBaseAddress));\r
+    PcdSet8S(PcdCRBIdleByPass, IdleByPass);\r
+  }\r
+\r
+  return EFI_SUCCESS;\r
+}\r