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1 | /** @file\r | |
2 | CPU Register Table Library functions.\r | |
3 | \r | |
4 | Copyright (c) 2016, 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 <PiPei.h>\r | |
16 | \r | |
17 | #include <Library/HobLib.h>\r | |
18 | #include <Library/PeiServicesLib.h>\r | |
19 | #include <Library/PeiServicesTablePointerLib.h>\r | |
20 | #include <Ppi/MpServices.h>\r | |
21 | #include "RegisterCpuFeatures.h"\r | |
22 | \r | |
23 | #define REGISTER_CPU_FEATURES_GUID \\r | |
24 | { \\r | |
25 | 0xa694c467, 0x697a, 0x446b, { 0xb9, 0x29, 0x5b, 0x14, 0xa0, 0xcf, 0x39, 0xf } \\r | |
26 | }\r | |
27 | \r | |
28 | EFI_GUID mRegisterCpuFeaturesHobGuid = REGISTER_CPU_FEATURES_GUID;\r | |
29 | \r | |
30 | /**\r | |
31 | Worker function to get CPU_FEATURES_DATA pointer.\r | |
32 | \r | |
33 | @return Pointer to CPU_FEATURES_DATA.\r | |
34 | **/\r | |
35 | CPU_FEATURES_DATA *\r | |
36 | GetCpuFeaturesData (\r | |
37 | VOID\r | |
38 | )\r | |
39 | {\r | |
40 | CPU_FEATURES_DATA *CpuInitData;\r | |
41 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
42 | VOID *DataInHob;\r | |
43 | UINT64 Data64;\r | |
44 | \r | |
45 | CpuInitData = NULL;\r | |
46 | GuidHob = GetFirstGuidHob (&mRegisterCpuFeaturesHobGuid);\r | |
47 | if (GuidHob != NULL) {\r | |
48 | DataInHob = GET_GUID_HOB_DATA (GuidHob);\r | |
49 | CpuInitData = (CPU_FEATURES_DATA *) (*(UINTN *) DataInHob);\r | |
50 | ASSERT (CpuInitData != NULL);\r | |
51 | } else {\r | |
52 | CpuInitData = AllocateZeroPool (sizeof (CPU_FEATURES_DATA));\r | |
53 | ASSERT (CpuInitData != NULL);\r | |
54 | //\r | |
55 | // Build location of CPU MP DATA buffer in HOB\r | |
56 | //\r | |
57 | Data64 = (UINT64) (UINTN) CpuInitData;\r | |
58 | BuildGuidDataHob (\r | |
59 | &mRegisterCpuFeaturesHobGuid,\r | |
60 | (VOID *) &Data64,\r | |
61 | sizeof (UINT64)\r | |
62 | );\r | |
63 | }\r | |
64 | \r | |
65 | return CpuInitData;\r | |
66 | }\r | |
67 | \r | |
68 | /**\r | |
69 | Worker function to get MP PPI service pointer.\r | |
70 | \r | |
71 | @return PEI PPI service pointer.\r | |
72 | **/\r | |
73 | EFI_PEI_MP_SERVICES_PPI *\r | |
74 | GetMpPpi (\r | |
75 | VOID\r | |
76 | )\r | |
77 | {\r | |
78 | EFI_STATUS Status;\r | |
79 | EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;\r | |
80 | \r | |
81 | //\r | |
82 | // Get MP Services Protocol\r | |
83 | //\r | |
84 | Status = PeiServicesLocatePpi (\r | |
85 | &gEfiPeiMpServicesPpiGuid,\r | |
86 | 0,\r | |
87 | NULL,\r | |
88 | (VOID **)&CpuMpPpi\r | |
89 | );\r | |
90 | ASSERT_EFI_ERROR (Status);\r | |
91 | return CpuMpPpi;\r | |
92 | }\r | |
93 | \r | |
94 | /**\r | |
95 | Worker function to return processor index.\r | |
96 | \r | |
97 | @return The processor index.\r | |
98 | **/\r | |
99 | UINTN\r | |
100 | GetProcessorIndex (\r | |
101 | VOID\r | |
102 | )\r | |
103 | {\r | |
104 | EFI_STATUS Status;\r | |
105 | EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;\r | |
106 | UINTN ProcessorIndex;\r | |
107 | \r | |
108 | CpuMpPpi = GetMpPpi ();\r | |
109 | \r | |
110 | Status = CpuMpPpi->WhoAmI(GetPeiServicesTablePointer (), CpuMpPpi, &ProcessorIndex);\r | |
111 | ASSERT_EFI_ERROR (Status);\r | |
112 | return ProcessorIndex;\r | |
113 | }\r | |
114 | \r | |
115 | /**\r | |
116 | Worker function to MP-related information on the requested processor at the\r | |
117 | instant this call is made.\r | |
118 | \r | |
119 | @param[in] ProcessorNumber The handle number of processor.\r | |
120 | @param[out] ProcessorInfoBuffer A pointer to the buffer where information for\r | |
121 | the requested processor is deposited.\r | |
122 | \r | |
123 | @return Status of MpServices->GetProcessorInfo().\r | |
124 | **/\r | |
125 | EFI_STATUS\r | |
126 | GetProcessorInformation (\r | |
127 | IN UINTN ProcessorNumber,\r | |
128 | OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer\r | |
129 | )\r | |
130 | {\r | |
131 | EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;\r | |
132 | EFI_STATUS Status;\r | |
133 | \r | |
134 | CpuMpPpi = GetMpPpi ();\r | |
135 | Status = CpuMpPpi->GetProcessorInfo (\r | |
136 | GetPeiServicesTablePointer(),\r | |
137 | CpuMpPpi,\r | |
138 | ProcessorNumber,\r | |
139 | ProcessorInfoBuffer\r | |
140 | );\r | |
141 | return Status;\r | |
142 | }\r | |
143 | \r | |
144 | /**\r | |
145 | Worker function to execute a caller provided function on all enabled APs.\r | |
146 | \r | |
147 | @param[in] Procedure A pointer to the function to be run on\r | |
148 | enabled APs of the system.\r | |
149 | **/\r | |
150 | VOID\r | |
151 | StartupAPsWorker (\r | |
152 | IN EFI_AP_PROCEDURE Procedure\r | |
153 | )\r | |
154 | {\r | |
155 | EFI_STATUS Status;\r | |
156 | EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;\r | |
157 | \r | |
158 | //\r | |
159 | // Get MP Services Protocol\r | |
160 | //\r | |
161 | Status = PeiServicesLocatePpi (\r | |
162 | &gEfiPeiMpServicesPpiGuid,\r | |
163 | 0,\r | |
164 | NULL,\r | |
165 | (VOID **)&CpuMpPpi\r | |
166 | );\r | |
167 | ASSERT_EFI_ERROR (Status);\r | |
168 | \r | |
169 | //\r | |
170 | // Wakeup all APs for data collection.\r | |
171 | //\r | |
172 | Status = CpuMpPpi->StartupAllAPs (\r | |
173 | GetPeiServicesTablePointer (),\r | |
174 | CpuMpPpi,\r | |
175 | Procedure,\r | |
176 | FALSE,\r | |
177 | 0,\r | |
178 | NULL\r | |
179 | );\r | |
180 | ASSERT_EFI_ERROR (Status);\r | |
181 | }\r | |
182 | \r | |
183 | /**\r | |
184 | Worker function to switch the requested AP to be the BSP from that point onward.\r | |
185 | \r | |
186 | @param[in] ProcessorNumber The handle number of AP that is to become the new BSP.\r | |
187 | **/\r | |
188 | VOID\r | |
189 | SwitchNewBsp (\r | |
190 | IN UINTN ProcessorNumber\r | |
191 | )\r | |
192 | {\r | |
193 | EFI_STATUS Status;\r | |
194 | EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;\r | |
195 | \r | |
196 | //\r | |
197 | // Get MP Services Protocol\r | |
198 | //\r | |
199 | Status = PeiServicesLocatePpi (\r | |
200 | &gEfiPeiMpServicesPpiGuid,\r | |
201 | 0,\r | |
202 | NULL,\r | |
203 | (VOID **)&CpuMpPpi\r | |
204 | );\r | |
205 | ASSERT_EFI_ERROR (Status);\r | |
206 | \r | |
207 | //\r | |
208 | // Wakeup all APs for data collection.\r | |
209 | //\r | |
210 | Status = CpuMpPpi->SwitchBSP (\r | |
211 | GetPeiServicesTablePointer (),\r | |
212 | CpuMpPpi,\r | |
213 | ProcessorNumber,\r | |
214 | TRUE\r | |
215 | );\r | |
216 | ASSERT_EFI_ERROR (Status);\r | |
217 | }\r | |
218 | \r | |
219 | /**\r | |
220 | Worker function to retrieve the number of logical processor in the platform.\r | |
221 | \r | |
222 | @param[out] NumberOfCpus Pointer to the total number of logical\r | |
223 | processors in the system, including the BSP\r | |
224 | and disabled APs.\r | |
225 | @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical\r | |
226 | processors that exist in system, including\r | |
227 | the BSP.\r | |
228 | **/\r | |
229 | VOID\r | |
230 | GetNumberOfProcessor (\r | |
231 | OUT UINTN *NumberOfCpus,\r | |
232 | OUT UINTN *NumberOfEnabledProcessors\r | |
233 | )\r | |
234 | {\r | |
235 | EFI_STATUS Status;\r | |
236 | EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;\r | |
237 | \r | |
238 | //\r | |
239 | // Get MP Services Protocol\r | |
240 | //\r | |
241 | Status = PeiServicesLocatePpi (\r | |
242 | &gEfiPeiMpServicesPpiGuid,\r | |
243 | 0,\r | |
244 | NULL,\r | |
245 | (VOID **)&CpuMpPpi\r | |
246 | );\r | |
247 | ASSERT_EFI_ERROR (Status);\r | |
248 | \r | |
249 | //\r | |
250 | // Get the number of CPUs\r | |
251 | //\r | |
252 | Status = CpuMpPpi->GetNumberOfProcessors (\r | |
253 | GetPeiServicesTablePointer (),\r | |
254 | CpuMpPpi,\r | |
255 | NumberOfCpus,\r | |
256 | NumberOfEnabledProcessors\r | |
257 | );\r | |
258 | ASSERT_EFI_ERROR (Status);\r | |
259 | }\r | |
260 | \r | |
261 | /**\r | |
262 | Allocates ACPI NVS memory to save ACPI_CPU_DATA.\r | |
263 | \r | |
264 | @return Pointer to allocated ACPI_CPU_DATA.\r | |
265 | **/\r | |
266 | ACPI_CPU_DATA *\r | |
267 | AllocateAcpiCpuData (\r | |
268 | VOID\r | |
269 | )\r | |
270 | {\r | |
271 | EFI_STATUS Status;\r | |
272 | EFI_PEI_MP_SERVICES_PPI *CpuMpPpi;\r | |
273 | UINTN NumberOfCpus;\r | |
274 | UINTN NumberOfEnabledProcessors;\r | |
275 | ACPI_CPU_DATA *AcpiCpuData;\r | |
276 | EFI_PHYSICAL_ADDRESS Address;\r | |
277 | UINTN TableSize;\r | |
278 | CPU_REGISTER_TABLE *RegisterTable;\r | |
279 | UINTN Index;\r | |
280 | EFI_PROCESSOR_INFORMATION ProcessorInfoBuffer;\r | |
281 | \r | |
282 | Status = PeiServicesAllocatePages (\r | |
283 | EfiACPIMemoryNVS,\r | |
284 | EFI_SIZE_TO_PAGES (sizeof (ACPI_CPU_DATA)),\r | |
285 | &Address\r | |
286 | );\r | |
287 | ASSERT_EFI_ERROR (Status);\r | |
288 | AcpiCpuData = (ACPI_CPU_DATA *) (UINTN) Address;\r | |
289 | ASSERT (AcpiCpuData != NULL);\r | |
290 | \r | |
291 | //\r | |
292 | // Get MP Services Protocol\r | |
293 | //\r | |
294 | Status = PeiServicesLocatePpi (\r | |
295 | &gEfiPeiMpServicesPpiGuid,\r | |
296 | 0,\r | |
297 | NULL,\r | |
298 | (VOID **)&CpuMpPpi\r | |
299 | );\r | |
300 | ASSERT_EFI_ERROR (Status);\r | |
301 | \r | |
302 | //\r | |
303 | // Get the number of CPUs\r | |
304 | //\r | |
305 | Status = CpuMpPpi->GetNumberOfProcessors (\r | |
306 | GetPeiServicesTablePointer (),\r | |
307 | CpuMpPpi,\r | |
308 | &NumberOfCpus,\r | |
309 | &NumberOfEnabledProcessors\r | |
310 | );\r | |
311 | ASSERT_EFI_ERROR (Status);\r | |
312 | AcpiCpuData->NumberOfCpus = (UINT32)NumberOfCpus;\r | |
313 | \r | |
314 | //\r | |
315 | // Allocate buffer for empty RegisterTable and PreSmmInitRegisterTable for all CPUs\r | |
316 | //\r | |
317 | TableSize = 2 * NumberOfCpus * sizeof (CPU_REGISTER_TABLE);\r | |
318 | Status = PeiServicesAllocatePages (\r | |
319 | EfiACPIMemoryNVS,\r | |
320 | EFI_SIZE_TO_PAGES (TableSize),\r | |
321 | &Address\r | |
322 | );\r | |
323 | ASSERT_EFI_ERROR (Status);\r | |
324 | RegisterTable = (CPU_REGISTER_TABLE *) (UINTN) Address;\r | |
325 | \r | |
326 | for (Index = 0; Index < NumberOfCpus; Index++) {\r | |
327 | Status = CpuMpPpi->GetProcessorInfo (\r | |
328 | GetPeiServicesTablePointer (),\r | |
329 | CpuMpPpi,\r | |
330 | Index,\r | |
331 | &ProcessorInfoBuffer\r | |
332 | );\r | |
333 | ASSERT_EFI_ERROR (Status);\r | |
334 | \r | |
335 | RegisterTable[Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;\r | |
336 | RegisterTable[Index].TableLength = 0;\r | |
337 | RegisterTable[Index].AllocatedSize = 0;\r | |
338 | RegisterTable[Index].RegisterTableEntry = 0;\r | |
339 | \r | |
340 | RegisterTable[NumberOfCpus + Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;\r | |
341 | RegisterTable[NumberOfCpus + Index].TableLength = 0;\r | |
342 | RegisterTable[NumberOfCpus + Index].AllocatedSize = 0;\r | |
343 | RegisterTable[NumberOfCpus + Index].RegisterTableEntry = 0;\r | |
344 | }\r | |
345 | AcpiCpuData->RegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)RegisterTable;\r | |
346 | AcpiCpuData->PreSmmInitRegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)(RegisterTable + NumberOfCpus);\r | |
347 | \r | |
348 | return AcpiCpuData;\r | |
349 | }\r | |
350 | \r | |
351 | /**\r | |
352 | Enlarges CPU register table for each processor.\r | |
353 | \r | |
354 | @param[in, out] RegisterTable Pointer processor's CPU register table\r | |
355 | **/\r | |
356 | VOID\r | |
357 | EnlargeRegisterTable (\r | |
358 | IN OUT CPU_REGISTER_TABLE *RegisterTable\r | |
359 | )\r | |
360 | {\r | |
361 | EFI_STATUS Status;\r | |
362 | EFI_PHYSICAL_ADDRESS Address;\r | |
363 | UINTN AllocatePages;\r | |
364 | \r | |
365 | AllocatePages = RegisterTable->AllocatedSize / EFI_PAGE_SIZE;\r | |
366 | Status = PeiServicesAllocatePages (\r | |
367 | EfiACPIMemoryNVS,\r | |
368 | AllocatePages + 1,\r | |
369 | &Address\r | |
370 | );\r | |
371 | ASSERT_EFI_ERROR (Status);\r | |
372 | \r | |
373 | //\r | |
374 | // If there are records existing in the register table, then copy its contents\r | |
375 | // to new region and free the old one.\r | |
376 | //\r | |
377 | if (RegisterTable->AllocatedSize > 0) {\r | |
378 | CopyMem (\r | |
379 | (VOID *) (UINTN) Address,\r | |
380 | (VOID *) (UINTN) RegisterTable->RegisterTableEntry,\r | |
381 | RegisterTable->AllocatedSize\r | |
382 | );\r | |
383 | }\r | |
384 | \r | |
385 | //\r | |
386 | // Adjust the allocated size and register table base address.\r | |
387 | //\r | |
388 | RegisterTable->AllocatedSize += EFI_PAGE_SIZE;\r | |
389 | RegisterTable->RegisterTableEntry = Address;\r | |
390 | }\r |