Add TPM2 implementation.

[mirror_edk2.git] / SecurityPkg / Library / Tpm2DeviceLibDTpm / Tpm2InstanceLibDTpm.c

diff --git a/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c b/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c
new file mode 100644 (file)
index 0000000..6a6a042
--- /dev/null
+++ b/SecurityPkg/Library/Tpm2DeviceLibDTpm/Tpm2InstanceLibDTpm.c
@@ -0,0 +1,85 @@
+/** @file\r
+  Ihis library is TPM2 DTPM instance.\r
+  It can be registered to Tpm2 Device router, to be active TPM2 engine,\r
+  based on platform setting.\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
+\r
+**/\r
+\r
+#include <Library/BaseLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/Tpm2DeviceLib.h>\r
+\r
+#include <Guid/TpmInstance.h>\r
+\r
+/**\r
+  This service enables the sending of commands to the TPM2.\r
+\r
+  @param[in]      InputParameterBlockSize  Size of the TPM2 input parameter block.\r
+  @param[in]      InputParameterBlock      Pointer to the TPM2 input parameter block.\r
+  @param[in,out]  OutputParameterBlockSize Size of the TPM2 output parameter block.\r
+  @param[in]      OutputParameterBlock     Pointer to the TPM2 output parameter block.\r
+\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
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DTpm2SubmitCommand (\r
+  IN UINT32            InputParameterBlockSize,\r
+  IN UINT8             *InputParameterBlock,\r
+  IN OUT UINT32        *OutputParameterBlockSize,\r
+  IN UINT8             *OutputParameterBlock\r
+  );\r
+\r
+/**\r
+  This service requests use TPM2.\r
+\r
+  @retval EFI_SUCCESS      Get the control of TPM2 chip.\r
+  @retval EFI_NOT_FOUND    TPM2 not found.\r
+  @retval EFI_DEVICE_ERROR Unexpected device behavior.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DTpm2RequestUseTpm (\r
+  VOID\r
+  );\r
+\r
+TPM2_DEVICE_INTERFACE  mDTpm2InternalTpm2Device = {\r
+  TPM_DEVICE_INTERFACE_TPM20_DTPM,\r
+  DTpm2SubmitCommand,\r
+  DTpm2RequestUseTpm,\r
+};\r
+\r
+/**\r
+  The function register DTPM2.0 instance.\r
+  \r
+  @retval EFI_SUCCESS   DTPM2.0 instance is registered, or system dose not surpport registr DTPM2.0 instance\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+Tpm2InstanceLibDTpmConstructor (\r
+  VOID\r
+  )\r
+{\r
+  EFI_STATUS  Status;\r
+\r
+  Status = Tpm2RegisterTpm2DeviceLib (&mDTpm2InternalTpm2Device);\r
+  if ((Status == EFI_SUCCESS) || (Status == EFI_UNSUPPORTED)) {\r
+    //\r
+    // Unsupported means platform policy does not need this instance enabled.\r
+    //\r
+    return EFI_SUCCESS;\r
+  }\r
+  return Status;\r
+}\r