SecurityPkg HashLibBaseCryptoRouterDxe/Tpm2DeviceLibRouterPei: Fixed GCC build failur...
[mirror_edk2.git] / SecurityPkg / Library / Tpm2DeviceLibRouter / Tpm2DeviceLibRouterPei.c
1 /** @file
2 Ihis library is TPM2 device router. Platform can register multi TPM2 instance to it
3 via PcdTpmInstanceGuid. Platform need make choice that which one will be final one.
4 At most one TPM2 instance can be finally registered, and other will return unsupported.
5
6 Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved. <BR>
7 This program and the accompanying materials
8 are licensed and made available under the terms and conditions of the BSD License
9 which accompanies this distribution. The full text of the license may be found at
10 http://opensource.org/licenses/bsd-license.php
11
12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
14
15 **/
16
17 #include <Library/BaseLib.h>
18 #include <Library/BaseMemoryLib.h>
19 #include <Library/HobLib.h>
20 #include <Library/DebugLib.h>
21 #include <Library/PcdLib.h>
22 #include <Library/Tpm2DeviceLib.h>
23
24 EFI_GUID mInternalTpm2DeviceInterfaceGuid = {
25 0x349cf818, 0xc0ba, 0x4c43, { 0x92, 0x9a, 0xc8, 0xa1, 0xb1, 0xb3, 0xd2, 0x55 }
26 };
27
28 /**
29 This function get TPM2.0 interface.
30
31 @retval TPM2.0 interface.
32 **/
33 TPM2_DEVICE_INTERFACE *
34 InternalGetTpm2DeviceInterface (
35 VOID
36 )
37 {
38 EFI_HOB_GUID_TYPE *Hob;
39
40 Hob = GetFirstGuidHob (&mInternalTpm2DeviceInterfaceGuid);
41 if (Hob == NULL) {
42 return NULL;
43 }
44 return (TPM2_DEVICE_INTERFACE *)(Hob + 1);
45 }
46
47 /**
48 This service enables the sending of commands to the TPM2.
49
50 @param[in] InputParameterBlockSize Size of the TPM2 input parameter block.
51 @param[in] InputParameterBlock Pointer to the TPM2 input parameter block.
52 @param[in,out] OutputParameterBlockSize Size of the TPM2 output parameter block.
53 @param[in] OutputParameterBlock Pointer to the TPM2 output parameter block.
54
55 @retval EFI_SUCCESS The command byte stream was successfully sent to the device and a response was successfully received.
56 @retval EFI_DEVICE_ERROR The command was not successfully sent to the device or a response was not successfully received from the device.
57 @retval EFI_BUFFER_TOO_SMALL The output parameter block is too small.
58 **/
59 EFI_STATUS
60 EFIAPI
61 Tpm2SubmitCommand (
62 IN UINT32 InputParameterBlockSize,
63 IN UINT8 *InputParameterBlock,
64 IN OUT UINT32 *OutputParameterBlockSize,
65 IN UINT8 *OutputParameterBlock
66 )
67 {
68 TPM2_DEVICE_INTERFACE *Tpm2DeviceInterface;
69
70 Tpm2DeviceInterface = InternalGetTpm2DeviceInterface ();
71 if (Tpm2DeviceInterface == NULL) {
72 return EFI_UNSUPPORTED;
73 }
74
75 return Tpm2DeviceInterface->Tpm2SubmitCommand (
76 InputParameterBlockSize,
77 InputParameterBlock,
78 OutputParameterBlockSize,
79 OutputParameterBlock
80 );
81 }
82
83 /**
84 This service requests use TPM2.
85
86 @retval EFI_SUCCESS Get the control of TPM2 chip.
87 @retval EFI_NOT_FOUND TPM2 not found.
88 @retval EFI_DEVICE_ERROR Unexpected device behavior.
89 **/
90 EFI_STATUS
91 EFIAPI
92 Tpm2RequestUseTpm (
93 VOID
94 )
95 {
96 TPM2_DEVICE_INTERFACE *Tpm2DeviceInterface;
97
98 Tpm2DeviceInterface = InternalGetTpm2DeviceInterface ();
99 if (Tpm2DeviceInterface == NULL) {
100 return EFI_UNSUPPORTED;
101 }
102 return Tpm2DeviceInterface->Tpm2RequestUseTpm ();
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 TPM2_DEVICE_INTERFACE *Tpm2Device
118 )
119 {
120 TPM2_DEVICE_INTERFACE *Tpm2DeviceInterface;
121
122 if (!CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &Tpm2Device->ProviderGuid)){
123 DEBUG ((EFI_D_ERROR, "WARNING: Tpm2RegisterTpm2DeviceLib - does not support %g registration\n", &Tpm2Device->ProviderGuid));
124 return EFI_UNSUPPORTED;
125 }
126
127 Tpm2DeviceInterface = InternalGetTpm2DeviceInterface ();
128 if (Tpm2DeviceInterface != NULL) {
129 //
130 // In PEI phase, there will be shadow driver dispatched again.
131 //
132 DEBUG ((EFI_D_ERROR, "Tpm2RegisterTpm2DeviceLib - Override\n"));
133 CopyMem (Tpm2DeviceInterface, Tpm2Device, sizeof(*Tpm2Device));
134 return EFI_SUCCESS;
135 } else {
136 Tpm2Device = BuildGuidDataHob (&mInternalTpm2DeviceInterfaceGuid, Tpm2Device, sizeof(*Tpm2Device));
137 if (Tpm2Device != NULL) {
138 return EFI_SUCCESS;
139 } else {
140 return EFI_OUT_OF_RESOURCES;
141 }
142 }
143 }