1 /*++ 2 3 Copyright (c) 1999 - 2015, Intel Corporation. All rights reserved 4 5 This program and the accompanying materials are licensed and made available under 6 the terms and conditions of the BSD License that accompanies this distribution. 7 The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php. 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 --*/ 14 15 #include <Uefi.h> 16 #include <Protocol/PttPassThru.h> 17 #include <Library/PcdLib.h> 18 #include <Library/UefiBootServicesTableLib.h> 19 //#include <Library/Tpm2DeviceLib.h> 20 21 22 PTT_PASS_THRU_PROTOCOL *mPttPassThruProtocol; 23 24 25 /** 26 The constructor function caches the pointer to PEI services. 27 28 The constructor function caches the pointer to PEI services. 29 It will always return EFI_SUCCESS. 30 31 @param FfsHeader Pointer to FFS header the loaded driver. 32 @param PeiServices Pointer to the PEI services. 33 34 @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS. 35 36 **/ 37 38 EFI_STATUS 39 EFIAPI 40 Tpm2DeviceLibConstructor ( 41 VOID 42 ) 43 { 44 EFI_STATUS Status = EFI_SUCCESS; 45 46 Status = gBS->LocateProtocol (&gPttPassThruProtocolGuid, NULL, (VOID **) &mPttPassThruProtocol); 47 48 return Status; 49 } 50 51 /** 52 This service enables the sending of commands to the TPM2. 53 54 @param[in] InputParameterBlockSize Size of the TPM2 input parameter block. 55 @param[in] InputParameterBlock Pointer to the TPM2 input parameter block. 56 @param[in] OutputParameterBlockSize Size of the TPM2 output parameter block. 57 @param[in] OutputParameterBlock Pointer to the TPM2 output parameter block. 58 59 @retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received. 60 @retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device. 61 @retval EFI_BUFFER_TOO_SMALL The output parameter block is too small. 62 **/ 63 EFI_STATUS 64 EFIAPI 65 Tpm2SubmitCommand ( 66 IN UINT32 InputParameterBlockSize, 67 IN UINT8 *InputParameterBlock, 68 IN OUT UINT32 *OutputParameterBlockSize, 69 IN UINT8 *OutputParameterBlock 70 ) 71 { 72 EFI_STATUS Status; 73 74 Status = mPttPassThruProtocol->Tpm2SubmitCommand ( 75 mPttPassThruProtocol, 76 InputParameterBlockSize, 77 InputParameterBlock, 78 OutputParameterBlockSize, 79 OutputParameterBlock 80 ); 81 82 return Status; 83 } 84 85 /** 86 This service requests use TPM2. 87 88 @retval EFI_SUCCESS Get the control of TPM2 chip. 89 @retval EFI_NOT_FOUND TPM2 not found. 90 @retval EFI_DEVICE_ERROR Unexpected device behavior. 91 **/ 92 EFI_STATUS 93 EFIAPI 94 Tpm2RequestUseTpm ( 95 VOID 96 ) 97 { 98 EFI_STATUS Status; 99 100 Status = mPttPassThruProtocol->Tpm2RequestUseTpm (mPttPassThruProtocol); 101 102 return Status; 103 } 104 105 /** 106 This service register TPM2 device. 107 108 @Param Tpm2Device TPM2 device 109 110 @retval EFI_SUCCESS This TPM2 device is registered successfully. 111 @retval EFI_UNSUPPORTED System does not support register this TPM2 device. 112 @retval EFI_ALREADY_STARTED System already register this TPM2 device. 113 **/ 114 EFI_STATUS 115 EFIAPI 116 Tpm2RegisterTpm2DeviceLib ( 117 IN PTT_TPM2_DEVICE_INTERFACE *Tpm2Device 118 ) 119 { 120 return EFI_UNSUPPORTED; 121 } 122 123 124
