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9e620719 | 1 | /** @file\r |
2 | SMM Control2 Protocol on SMM Control Protocol Thunk driver.\r | |
3 | \r | |
26a76fbc | 4 | Copyright (c) 2009 - 2010, Intel Corporation\r |
9e620719 | 5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "SmmControl2OnSmmControlThunk.h"\r | |
16 | \r | |
17 | EFI_SMM_CONTROL2_PROTOCOL gSmmControl2 = {\r | |
18 | SmmControl2Trigger,\r | |
19 | SmmControl2Clear,\r | |
20 | 0\r | |
21 | };\r | |
22 | \r | |
23 | EFI_SMM_CONTROL_PROTOCOL *mSmmControl;\r | |
24 | UINT8 mDataPort;\r | |
25 | \r | |
26 | /**\r | |
27 | Invokes SMI activation from either the preboot or runtime environment.\r | |
28 | \r | |
29 | This function generates an SMI.\r | |
30 | \r | |
31 | @param[in] This The EFI_SMM_CONTROL2_PROTOCOL instance.\r | |
26a76fbc LG |
32 | @param[in, out] CommandPort The value written to the command port.\r |
33 | @param[in, out] DataPort The value written to the data port.\r | |
9e620719 | 34 | @param[in] Periodic Optional mechanism to engender a periodic stream.\r |
35 | @param[in] ActivationInterval Optional parameter to repeat at this period one\r | |
36 | time or, if the Periodic Boolean is set, periodically.\r | |
37 | \r | |
38 | @retval EFI_SUCCESS The SMI/PMI has been engendered.\r | |
39 | @retval EFI_DEVICE_ERROR The timing is unsupported.\r | |
40 | @retval EFI_INVALID_PARAMETER The activation period is unsupported.\r | |
41 | @retval EFI_NOT_STARTED The SMM base service has not been initialized.\r | |
42 | **/\r | |
43 | EFI_STATUS\r | |
44 | EFIAPI\r | |
45 | SmmControl2Trigger (\r | |
46 | IN CONST EFI_SMM_CONTROL2_PROTOCOL *This,\r | |
47 | IN OUT UINT8 *CommandPort OPTIONAL,\r | |
48 | IN OUT UINT8 *DataPort OPTIONAL,\r | |
49 | IN BOOLEAN Periodic OPTIONAL,\r | |
50 | IN UINTN ActivationInterval OPTIONAL\r | |
51 | )\r | |
52 | {\r | |
26a76fbc | 53 | UINTN ArgumentBufferSize;\r |
9e620719 | 54 | \r |
26a76fbc | 55 | ArgumentBufferSize = 0;\r |
9e620719 | 56 | if (CommandPort != NULL) {\r |
57 | ArgumentBufferSize = 1;\r | |
58 | }\r | |
59 | if (DataPort != NULL) {\r | |
60 | IoWrite8 (mDataPort, *DataPort);\r | |
61 | }\r | |
62 | return mSmmControl->Trigger (mSmmControl, (INT8 *)CommandPort, &ArgumentBufferSize, Periodic, ActivationInterval);\r | |
63 | }\r | |
64 | \r | |
65 | /**\r | |
66 | Clears any system state that was created in response to the Trigger() call.\r | |
67 | \r | |
68 | This function acknowledges and causes the deassertion of the SMI activation source.\r | |
69 | \r | |
70 | @param[in] This The EFI_SMM_CONTROL2_PROTOCOL instance.\r | |
71 | @param[in] Periodic Optional parameter to repeat at this period one time\r | |
72 | \r | |
73 | @retval EFI_SUCCESS The SMI/PMI has been engendered.\r | |
74 | @retval EFI_DEVICE_ERROR The source could not be cleared.\r | |
75 | @retval EFI_INVALID_PARAMETER The service did not support the Periodic input argument.\r | |
76 | **/\r | |
77 | EFI_STATUS\r | |
78 | EFIAPI\r | |
79 | SmmControl2Clear (\r | |
80 | IN CONST EFI_SMM_CONTROL2_PROTOCOL *This,\r | |
81 | IN BOOLEAN Periodic OPTIONAL\r | |
82 | )\r | |
83 | {\r | |
84 | return mSmmControl->Clear (mSmmControl, Periodic);\r | |
85 | }\r | |
86 | \r | |
1fafcca8 | 87 | /**\r |
88 | Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r | |
89 | \r | |
90 | This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r | |
91 | It convers pointer to new virtual address.\r | |
92 | \r | |
93 | @param[in] Event Event whose notification function is being invoked.\r | |
94 | @param[in] Context Pointer to the notification function's context.\r | |
95 | \r | |
96 | **/\r | |
97 | VOID\r | |
98 | EFIAPI\r | |
99 | SetVirtualAddressNotify (\r | |
100 | IN EFI_EVENT Event,\r | |
101 | IN VOID *Context\r | |
102 | )\r | |
103 | {\r | |
104 | EfiConvertPointer (0x0, (VOID **)&mSmmControl);\r | |
105 | }\r | |
106 | \r | |
9e620719 | 107 | /**\r |
108 | Entry Point for this thunk driver.\r | |
109 | \r | |
110 | @param[in] ImageHandle Image handle of this driver.\r | |
111 | @param[in] SystemTable A Pointer to the EFI System Table.\r | |
112 | \r | |
113 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
114 | @retval other Some error occurred when executing this entry point.\r | |
115 | **/\r | |
116 | EFI_STATUS\r | |
117 | EFIAPI\r | |
118 | SmmControl2ThunkMain (\r | |
119 | IN EFI_HANDLE ImageHandle,\r | |
120 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
121 | )\r | |
122 | {\r | |
123 | EFI_STATUS Status;\r | |
1fafcca8 | 124 | EFI_EVENT Event;\r |
9e620719 | 125 | EFI_SMM_CONTROL_REGISTER RegisterInfo;\r |
126 | \r | |
127 | ///\r | |
128 | /// Locate Framework SMM Control Protocol\r | |
129 | ///\r | |
130 | Status = gBS->LocateProtocol (&gEfiSmmControlProtocolGuid, NULL, (VOID **)&mSmmControl);\r | |
131 | ASSERT_EFI_ERROR (Status);\r | |
132 | \r | |
133 | gSmmControl2.MinimumTriggerPeriod = mSmmControl->MinimumTriggerPeriod;\r | |
134 | \r | |
135 | Status = mSmmControl->GetRegisterInfo (mSmmControl, &RegisterInfo);\r | |
136 | ASSERT_EFI_ERROR (Status);\r | |
137 | mDataPort = RegisterInfo.SmiDataRegister;\r | |
138 | \r | |
1fafcca8 | 139 | ///\r |
140 | /// Create event on SetVirtualAddressMap() to convert mSmmControl from a physical address to a virtual address\r | |
141 | ///\r | |
142 | Status = gBS->CreateEventEx (\r | |
143 | EVT_NOTIFY_SIGNAL,\r | |
144 | TPL_NOTIFY,\r | |
145 | SetVirtualAddressNotify,\r | |
146 | NULL,\r | |
147 | &gEfiEventVirtualAddressChangeGuid,\r | |
148 | &Event\r | |
149 | );\r | |
150 | \r | |
151 | ASSERT_EFI_ERROR (Status);\r | |
152 | \r | |
9e620719 | 153 | ///\r |
154 | /// Publish framework SMM Control Protocol\r | |
155 | ///\r | |
156 | Status = gBS->InstallProtocolInterface (\r | |
157 | &ImageHandle,\r | |
158 | &gEfiSmmControl2ProtocolGuid,\r | |
159 | EFI_NATIVE_INTERFACE,\r | |
160 | &gSmmControl2\r | |
161 | );\r | |
162 | return Status;\r | |
163 | }\r | |
164 | \r |