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1 | /** @file\r |
2 | Machine Check features.\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 | Detects if Machine Check Exception feature supported on current processor.\r | |
19 | \r | |
20 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
21 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
22 | structure for the CPU executing this function.\r | |
23 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
24 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
25 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
26 | RegisterCpuFeature().\r | |
27 | \r | |
28 | @retval TRUE Machine Check Exception feature is supported.\r | |
29 | @retval FALSE Machine Check Exception feature is not supported.\r | |
30 | \r | |
31 | @note This service could be called by BSP/APs.\r | |
32 | **/\r | |
33 | BOOLEAN\r | |
34 | EFIAPI\r | |
35 | MceSupport (\r | |
36 | IN UINTN ProcessorNumber,\r | |
37 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
38 | IN VOID *ConfigData OPTIONAL\r | |
39 | )\r | |
40 | {\r | |
41 | return (CpuInfo->CpuIdVersionInfoEdx.Bits.MCE == 1);\r | |
42 | }\r | |
43 | \r | |
44 | /**\r | |
45 | Initializes Machine Check Exception feature to specific state.\r | |
46 | \r | |
47 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
48 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
49 | structure for the CPU executing this function.\r | |
50 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
51 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
52 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
53 | RegisterCpuFeature().\r | |
54 | @param[in] State If TRUE, then the Machine Check Exception feature must be enabled.\r | |
55 | If FALSE, then the Machine Check Exception feature must be disabled.\r | |
56 | \r | |
57 | @retval RETURN_SUCCESS Machine Check Exception feature is initialized.\r | |
58 | \r | |
59 | @note This service could be called by BSP only.\r | |
60 | **/\r | |
61 | RETURN_STATUS\r | |
62 | EFIAPI\r | |
63 | MceInitialize (\r | |
64 | IN UINTN ProcessorNumber,\r | |
65 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
66 | IN VOID *ConfigData, OPTIONAL\r | |
67 | IN BOOLEAN State\r | |
68 | )\r | |
69 | {\r | |
70 | //\r | |
71 | // Set MCE bit in CR4\r | |
72 | //\r | |
73 | CPU_REGISTER_TABLE_WRITE_FIELD (\r | |
74 | ProcessorNumber,\r | |
75 | ControlRegister,\r | |
76 | 4,\r | |
77 | IA32_CR4,\r | |
78 | Bits.MCE,\r | |
79 | (State) ? 1 : 0\r | |
80 | );\r | |
81 | return RETURN_SUCCESS;\r | |
82 | }\r | |
83 | \r | |
84 | /**\r | |
85 | Detects if Machine Check Architecture feature supported on current processor.\r | |
86 | \r | |
87 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
88 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
89 | structure for the CPU executing this function.\r | |
90 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
91 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
92 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
93 | RegisterCpuFeature().\r | |
94 | \r | |
95 | @retval TRUE Machine Check Architecture feature is supported.\r | |
96 | @retval FALSE Machine Check Architecture feature is not supported.\r | |
97 | \r | |
98 | @note This service could be called by BSP/APs.\r | |
99 | **/\r | |
100 | BOOLEAN\r | |
101 | EFIAPI\r | |
102 | McaSupport (\r | |
103 | IN UINTN ProcessorNumber,\r | |
104 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
105 | IN VOID *ConfigData OPTIONAL\r | |
106 | )\r | |
107 | {\r | |
108 | return (CpuInfo->CpuIdVersionInfoEdx.Bits.MCA == 1);\r | |
109 | }\r | |
110 | \r | |
111 | /**\r | |
112 | Initializes Machine Check Architecture feature to specific state.\r | |
113 | \r | |
114 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
115 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
116 | structure for the CPU executing this function.\r | |
117 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
118 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
119 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
120 | RegisterCpuFeature().\r | |
121 | @param[in] State If TRUE, then the Machine Check Architecture feature must be enabled.\r | |
122 | If FALSE, then the Machine Check Architecture feature must be disabled.\r | |
123 | \r | |
124 | @retval RETURN_SUCCESS Machine Check Architecture feature is initialized.\r | |
125 | \r | |
126 | @note This service could be called by BSP only.\r | |
127 | **/\r | |
128 | RETURN_STATUS\r | |
129 | EFIAPI\r | |
130 | McaInitialize (\r | |
131 | IN UINTN ProcessorNumber,\r | |
132 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
133 | IN VOID *ConfigData, OPTIONAL\r | |
134 | IN BOOLEAN State\r | |
135 | )\r | |
136 | {\r | |
137 | MSR_IA32_MCG_CAP_REGISTER McgCap;\r | |
138 | UINT32 BankIndex;\r | |
139 | \r | |
140 | McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);\r | |
141 | for (BankIndex = 0; BankIndex < (UINT32) McgCap.Bits.Count; BankIndex++) {\r | |
142 | CPU_REGISTER_TABLE_WRITE64 (\r | |
143 | ProcessorNumber,\r | |
144 | Msr,\r | |
145 | MSR_IA32_MC0_CTL + BankIndex * 4,\r | |
146 | MAX_UINT64\r | |
147 | );\r | |
148 | }\r | |
149 | \r | |
150 | if (PcdGetBool (PcdIsPowerOnReset)) {\r | |
151 | for (BankIndex = 0; BankIndex < (UINTN) McgCap.Bits.Count; BankIndex++) {\r | |
152 | CPU_REGISTER_TABLE_WRITE64 (\r | |
153 | ProcessorNumber,\r | |
154 | Msr,\r | |
155 | MSR_IA32_MC0_STATUS + BankIndex * 4,\r | |
156 | 0\r | |
157 | );\r | |
158 | }\r | |
159 | }\r | |
160 | \r | |
161 | return RETURN_SUCCESS;\r | |
162 | }\r | |
163 | \r | |
164 | /**\r | |
165 | Detects if IA32_MCG_CTL feature supported on current processor.\r | |
166 | \r | |
167 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
168 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
169 | structure for the CPU executing this function.\r | |
170 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
171 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
172 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
173 | RegisterCpuFeature().\r | |
174 | \r | |
175 | @retval TRUE IA32_MCG_CTL feature is supported.\r | |
176 | @retval FALSE IA32_MCG_CTL feature is not supported.\r | |
177 | \r | |
178 | @note This service could be called by BSP/APs.\r | |
179 | **/\r | |
180 | BOOLEAN\r | |
181 | EFIAPI\r | |
182 | McgCtlSupport (\r | |
183 | IN UINTN ProcessorNumber,\r | |
184 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
185 | IN VOID *ConfigData OPTIONAL\r | |
186 | )\r | |
187 | {\r | |
188 | MSR_IA32_MCG_CAP_REGISTER McgCap;\r | |
189 | \r | |
190 | if (!McaSupport (ProcessorNumber, CpuInfo, ConfigData)) {\r | |
191 | return FALSE;\r | |
192 | }\r | |
193 | McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);\r | |
194 | return (McgCap.Bits.MCG_CTL_P == 1);\r | |
195 | }\r | |
196 | \r | |
197 | /**\r | |
198 | Initializes IA32_MCG_CTL feature to specific state.\r | |
199 | \r | |
200 | @param[in] ProcessorNumber The index of the CPU executing this function.\r | |
201 | @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION\r | |
202 | structure for the CPU executing this function.\r | |
203 | @param[in] ConfigData A pointer to the configuration buffer returned\r | |
204 | by CPU_FEATURE_GET_CONFIG_DATA. NULL if\r | |
205 | CPU_FEATURE_GET_CONFIG_DATA was not provided in\r | |
206 | RegisterCpuFeature().\r | |
207 | @param[in] State If TRUE, then the IA32_MCG_CTL feature must be enabled.\r | |
208 | If FALSE, then the IA32_MCG_CTL feature must be disabled.\r | |
209 | \r | |
210 | @retval RETURN_SUCCESS IA32_MCG_CTL feature is initialized.\r | |
211 | \r | |
212 | @note This service could be called by BSP only.\r | |
213 | **/\r | |
214 | RETURN_STATUS\r | |
215 | EFIAPI\r | |
216 | McgCtlInitialize (\r | |
217 | IN UINTN ProcessorNumber,\r | |
218 | IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,\r | |
219 | IN VOID *ConfigData, OPTIONAL\r | |
220 | IN BOOLEAN State\r | |
221 | )\r | |
222 | {\r | |
223 | CPU_REGISTER_TABLE_WRITE64 (\r | |
224 | ProcessorNumber,\r | |
225 | Msr,\r | |
226 | MSR_IA32_MCG_CTL,\r | |
227 | (State)? MAX_UINT64 : 0\r | |
228 | );\r | |
229 | return RETURN_SUCCESS;\r | |
230 | }\r | |
231 | \r |