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1 | /** @file\r |
2 | Features in MSR_IA32_FEATURE_CONTROL register.\r | |
3 | \r | |
4 | Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r | |
5 | 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 "CpuCommonFeatures.h"\r | |
16 | \r | |
17 | /**\r | |
18 | Prepares for the data used by CPU feature detection and initialization.\r | |
19 | \r | |
20 | @param[in] NumberOfProcessors The number of CPUs in the platform.\r | |
21 | \r | |
22 | @return Pointer to a buffer of CPU related configuration data.\r | |
23 | \r | |
24 | @note This service could be called by BSP only.\r | |
25 | **/\r | |
26 | VOID *\r | |
27 | EFIAPI\r | |
28 | FeatureControlGetConfigData (\r | |
29 | IN UINTN NumberOfProcessors\r | |
30 | )\r | |
31 | {\r | |
32 | VOID *ConfigData;\r | |
33 | \r | |
34 | ConfigData = AllocateZeroPool (sizeof (MSR_IA32_FEATURE_CONTROL_REGISTER) * NumberOfProcessors);\r | |
35 | ASSERT (ConfigData != NULL);\r | |
36 | return ConfigData;\r | |
37 | }\r | |
38 | \r | |
39 | /**\r | |
40 | Detects if VMX feature supported on current processor.\r | |
41 | \r | |
42 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
43 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
44 | structure for the CPU executing this function.\r | |
45 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
46 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
47 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
48 | RegisterCpuFeature().\r | |
49 | \r | |
50 | @retval TRUE VMX feature is supported.\r | |
51 | @retval FALSE VMX feature is not supported.\r | |
52 | \r | |
53 | @note This service could be called by BSP/APs.\r | |
54 | **/\r | |
55 | BOOLEAN\r | |
56 | EFIAPI\r | |
57 | VmxSupport (\r | |
58 | IN UINTN ProcessorNumber,\r | |
59 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
60 | IN VOID *ConfigData OPTIONAL\r | |
61 | )\r | |
62 | {\r | |
63 | MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;\r | |
64 | \r | |
65 | ASSERT (ConfigData != NULL);\r | |
66 | MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;\r | |
67 | MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);\r | |
68 | return (CpuInfo->CpuIdVersionInfoEcx.Bits.VMX == 1);\r | |
69 | }\r | |
70 | \r | |
71 | /**\r | |
72 | Initializes VMX inside SMX feature to specific state.\r | |
73 | \r | |
74 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
75 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
76 | structure for the CPU executing this function.\r | |
77 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
78 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
79 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
80 | RegisterCpuFeature().\r | |
81 | @param[in] State If TRUE, then the VMX inside SMX feature must be enabled.\r | |
82 | If FALSE, then the VMX inside SMX feature must be disabled.\r | |
83 | \r | |
84 | @retval RETURN_SUCCESS VMX inside SMX feature is initialized.\r | |
85 | \r | |
86 | @note This service could be called by BSP only.\r | |
87 | **/\r | |
88 | RETURN_STATUS\r | |
89 | EFIAPI\r | |
90 | VmxInsideSmxInitialize (\r | |
91 | IN UINTN ProcessorNumber,\r | |
92 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
93 | IN VOID *ConfigData, OPTIONAL\r | |
94 | IN BOOLEAN State\r | |
95 | )\r | |
96 | {\r | |
97 | MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;\r | |
98 | \r | |
99 | ASSERT (ConfigData != NULL);\r | |
100 | MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;\r | |
101 | if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {\r | |
102 | CPU_REGISTER_TABLE_WRITE_FIELD (\r | |
103 | ProcessorNumber,\r | |
104 | Msr,\r | |
105 | MSR_IA32_FEATURE_CONTROL,\r | |
106 | MSR_IA32_FEATURE_CONTROL_REGISTER,\r | |
107 | Bits.EnableVmxInsideSmx,\r | |
108 | (State) ? 1 : 0\r | |
109 | );\r | |
110 | }\r | |
111 | return RETURN_SUCCESS;\r | |
112 | }\r | |
113 | \r | |
114 | /**\r | |
115 | Initializes SENTER feature to specific state.\r | |
116 | \r | |
117 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
118 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
119 | structure for the CPU executing this function.\r | |
120 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
121 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
122 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
123 | RegisterCpuFeature().\r | |
124 | @param[in] State If TRUE, then the SENTER feature must be enabled.\r | |
125 | If FALSE, then the SENTER feature must be disabled.\r | |
126 | \r | |
127 | @retval RETURN_SUCCESS SENTER feature is initialized.\r | |
128 | \r | |
129 | @note This service could be called by BSP only.\r | |
130 | **/\r | |
131 | RETURN_STATUS\r | |
132 | EFIAPI\r | |
133 | SenterInitialize (\r | |
134 | IN UINTN ProcessorNumber,\r | |
135 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
136 | IN VOID *ConfigData, OPTIONAL\r | |
137 | IN BOOLEAN State\r | |
138 | )\r | |
139 | {\r | |
140 | MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;\r | |
141 | \r | |
142 | ASSERT (ConfigData != NULL);\r | |
143 | MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;\r | |
144 | if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {\r | |
145 | CPU_REGISTER_TABLE_WRITE_FIELD (\r | |
146 | ProcessorNumber,\r | |
147 | Msr,\r | |
148 | MSR_IA32_FEATURE_CONTROL,\r | |
149 | MSR_IA32_FEATURE_CONTROL_REGISTER,\r | |
150 | Bits.SenterLocalFunctionEnables,\r | |
151 | (State) ? 0x7F : 0\r | |
152 | );\r | |
153 | \r | |
154 | CPU_REGISTER_TABLE_WRITE_FIELD (\r | |
155 | ProcessorNumber,\r | |
156 | Msr,\r | |
157 | MSR_IA32_FEATURE_CONTROL,\r | |
158 | MSR_IA32_FEATURE_CONTROL_REGISTER,\r | |
159 | Bits.SenterGlobalEnable,\r | |
160 | (State) ? 1 : 0\r | |
161 | );\r | |
162 | }\r | |
163 | return RETURN_SUCCESS;\r | |
164 | }\r | |
165 | \r | |
166 | /**\r | |
167 | Detects if Lock Feature Control Register feature supported on current processor.\r | |
168 | \r | |
169 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
170 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
171 | structure for the CPU executing this function.\r | |
172 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
173 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
174 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
175 | RegisterCpuFeature().\r | |
176 | \r | |
177 | @retval TRUE Lock Feature Control Register feature is supported.\r | |
178 | @retval FALSE Lock Feature Control Register feature is not supported.\r | |
179 | \r | |
180 | @note This service could be called by BSP/APs.\r | |
181 | **/\r | |
182 | BOOLEAN\r | |
183 | EFIAPI\r | |
184 | LockFeatureControlRegisterSupport (\r | |
185 | IN UINTN ProcessorNumber,\r | |
186 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
187 | IN VOID *ConfigData OPTIONAL\r | |
188 | )\r | |
189 | {\r | |
190 | MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;\r | |
191 | \r | |
192 | ASSERT (ConfigData != NULL);\r | |
193 | MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;\r | |
194 | MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);\r | |
195 | return TRUE;\r | |
196 | }\r | |
197 | \r | |
198 | /**\r | |
199 | Initializes Lock Feature Control Register feature to specific state.\r | |
200 | \r | |
201 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
202 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
203 | structure for the CPU executing this function.\r | |
204 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
205 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
206 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
207 | RegisterCpuFeature().\r | |
208 | @param[in] State If TRUE, then the Lock Feature Control Register feature must be enabled.\r | |
209 | If FALSE, then the Lock Feature Control Register feature must be disabled.\r | |
210 | \r | |
211 | @retval RETURN_SUCCESS Lock Feature Control Register feature is initialized.\r | |
212 | \r | |
213 | @note This service could be called by BSP only.\r | |
214 | **/\r | |
215 | RETURN_STATUS\r | |
216 | EFIAPI\r | |
217 | LockFeatureControlRegisterInitialize (\r | |
218 | IN UINTN ProcessorNumber,\r | |
219 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
220 | IN VOID *ConfigData, OPTIONAL\r | |
221 | IN BOOLEAN State\r | |
222 | )\r | |
223 | {\r | |
224 | MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;\r | |
225 | \r | |
226 | ASSERT (ConfigData != NULL);\r | |
227 | MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;\r | |
228 | if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {\r | |
229 | CPU_REGISTER_TABLE_WRITE_FIELD (\r | |
230 | ProcessorNumber,\r | |
231 | Msr,\r | |
232 | MSR_IA32_FEATURE_CONTROL,\r | |
233 | MSR_IA32_FEATURE_CONTROL_REGISTER,\r | |
234 | Bits.Lock,\r | |
235 | 1\r | |
236 | );\r | |
237 | }\r | |
238 | return RETURN_SUCCESS;\r | |
239 | }\r | |
240 | \r | |
241 | /**\r | |
242 | Detects if SMX feature supported on current processor.\r | |
243 | \r | |
244 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
245 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
246 | structure for the CPU executing this function.\r | |
247 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
248 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
249 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
250 | RegisterCpuFeature().\r | |
251 | \r | |
252 | @retval TRUE SMX feature is supported.\r | |
253 | @retval FALSE SMX feature is not supported.\r | |
254 | \r | |
255 | @note This service could be called by BSP/APs.\r | |
256 | **/\r | |
257 | BOOLEAN\r | |
258 | EFIAPI\r | |
259 | SmxSupport (\r | |
260 | IN UINTN ProcessorNumber,\r | |
261 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
262 | IN VOID *ConfigData OPTIONAL\r | |
263 | )\r | |
264 | {\r | |
265 | MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;\r | |
266 | \r | |
267 | ASSERT (ConfigData != NULL);\r | |
268 | MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;\r | |
269 | MsrRegister[ProcessorNumber].Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);\r | |
270 | return (CpuInfo->CpuIdVersionInfoEcx.Bits.SMX == 1);\r | |
271 | }\r | |
272 | \r | |
273 | /**\r | |
274 | Initializes VMX outside SMX feature to specific state.\r | |
275 | \r | |
276 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
277 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
278 | structure for the CPU executing this function.\r | |
279 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
280 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
281 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
282 | RegisterCpuFeature().\r | |
283 | @param[in] State If TRUE, then the VMX outside SMX feature must be enabled.\r | |
284 | If FALSE, then the VMX outside SMX feature must be disabled.\r | |
285 | \r | |
286 | @retval RETURN_SUCCESS VMX outside SMX feature is initialized.\r | |
287 | \r | |
288 | @note This service could be called by BSP only.\r | |
289 | **/\r | |
290 | RETURN_STATUS\r | |
291 | EFIAPI\r | |
292 | VmxOutsideSmxInitialize (\r | |
293 | IN UINTN ProcessorNumber,\r | |
294 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
295 | IN VOID *ConfigData, OPTIONAL\r | |
296 | IN BOOLEAN State\r | |
297 | )\r | |
298 | {\r | |
299 | MSR_IA32_FEATURE_CONTROL_REGISTER *MsrRegister;\r | |
300 | \r | |
301 | ASSERT (ConfigData != NULL);\r | |
302 | MsrRegister = (MSR_IA32_FEATURE_CONTROL_REGISTER *) ConfigData;\r | |
303 | if (MsrRegister[ProcessorNumber].Bits.Lock == 0) {\r | |
304 | CPU_REGISTER_TABLE_WRITE_FIELD (\r | |
305 | ProcessorNumber,\r | |
306 | Msr,\r | |
307 | MSR_IA32_FEATURE_CONTROL,\r | |
308 | MSR_IA32_FEATURE_CONTROL_REGISTER,\r | |
309 | Bits.EnableVmxOutsideSmx,\r | |
310 | (State) ? 1 : 0\r | |
311 | );\r | |
312 | }\r | |
313 | return RETURN_SUCCESS;\r | |
314 | }\r |