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source: vbox/trunk/src/VBox/Devices/EFI/FirmwareNew/UefiCpuPkg/Include/Library/RegisterCpuFeaturesLib.h@ 77662

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1/** @file
2 Register CPU Features Library to register and manage CPU features.
3
4 Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
9
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12
13**/
14
15#ifndef __REGISTER_CPU_FEATURES_LIB_H__
16#define __REGISTER_CPU_FEATURES_LIB_H__
17
18#include <AcpiCpuData.h>
19#include <Register/Cpuid.h>
20#include <Protocol/MpService.h>
21
22///
23/// Defines used to identify a CPU feature. The lower 16-bits are used to
24/// identify a unique CPU feature and the value represents a bit number in
25/// a bit mask. The upper 16-bits are bit mask values that are used as
26/// modifiers of a CPU feature. When used in a list, the define value
27/// CPU_FEATURE_END is used to terminate a list of CPU feature values.
28/// @{
29#define CPU_FEATURE_AESNI 0
30#define CPU_FEATURE_TURBO_MODE 1
31#define CPU_FEATURE_MWAIT 2
32#define CPU_FEATURE_ACPI 3
33#define CPU_FEATURE_EIST 4
34#define CPU_FEATURE_XD 5
35#define CPU_FEATURE_FASTSTRINGS 6
36#define CPU_FEATURE_VMX 7
37#define CPU_FEATURE_SMX 8
38#define CPU_FEATURE_LMCE 9
39#define CPU_FEATURE_LOCK_FEATURE_CONTROL_REGISTER 10
40#define CPU_FEATURE_LIMIT_CPUID_MAX_VAL 11
41#define CPU_FEATURE_MCE 12
42#define CPU_FEATURE_MCA 13
43#define CPU_FEATURE_MCG_CTL 14
44#define CPU_FEATURE_PENDING_BREAK 15
45#define CPU_FEATURE_C1E 16
46#define CPU_FEATURE_C1_AUTO_DEMOTION 17
47#define CPU_FEATURE_C3_AUTO_DEMOTION 18
48#define CPU_FEATURE_C1_UNDEMOTION 19
49#define CPU_FEATURE_C3_UNDEMOTION 20
50#define CPU_FEATURE_C_STATE 21
51#define CPU_FEATURE_TM 22
52#define CPU_FEATURE_TM2 23
53#define CPU_FEATURE_X2APIC 24
54#define CPU_FEATURE_RESERVED_25 25
55#define CPU_FEATURE_RESERVED_26 26
56#define CPU_FEATURE_RESERVED_27 27
57#define CPU_FEATURE_RESERVED_28 28
58#define CPU_FEATURE_RESERVED_29 29
59#define CPU_FEATURE_RESERVED_30 30
60#define CPU_FEATURE_RESERVED_31 31
61
62#define CPU_FEATURE_L2_PREFETCHER (32+0)
63#define CPU_FEATURE_L1_DATA_PREFETCHER (32+1)
64#define CPU_FEATURE_HARDWARE_PREFETCHER (32+2)
65#define CPU_FEATURE_ADJACENT_CACHE_LINE_PREFETCH (32+3)
66#define CPU_FEATURE_DCU_PREFETCHER (32+4)
67#define CPU_FEATURE_IP_PREFETCHER (32+5)
68#define CPU_FEATURE_MLC_STREAMER_PREFETCHER (32+6)
69#define CPU_FEATURE_MLC_SPATIAL_PREFETCHER (32+7)
70#define CPU_FEATURE_THREE_STRICK_COUNTER (32+8)
71#define CPU_FEATURE_APIC_TPR_UPDATE_MESSAGE (32+9)
72#define CPU_FEATURE_ENERGY_PERFORMANCE_BIAS (32+10)
73#define CPU_FEATURE_PPIN (32+11)
74#define CPU_FEATURE_PROC_TRACE (32+12)
75
76#define CPU_FEATURE_BEFORE_ALL BIT27
77#define CPU_FEATURE_AFTER_ALL BIT28
78#define CPU_FEATURE_BEFORE BIT29
79#define CPU_FEATURE_AFTER BIT30
80#define CPU_FEATURE_END MAX_UINT32
81/// @}
82
83///
84/// CPU Information passed into the SupportFunc and InitializeFunc of the
85/// RegisterCpuFeature() library function. This structure contains information
86/// that is commonly used during CPU feature detection and initialization.
87///
88typedef struct {
89 ///
90 /// The package that the CPU resides
91 ///
92 EFI_PROCESSOR_INFORMATION ProcessorInfo;
93 ///
94 /// The Display Family of the CPU computed from CPUID leaf CPUID_VERSION_INFO
95 ///
96 UINT32 DisplayFamily;
97 ///
98 /// The Display Model of the CPU computed from CPUID leaf CPUID_VERSION_INFO
99 ///
100 UINT32 DisplayModel;
101 ///
102 /// The Stepping ID of the CPU computed from CPUID leaf CPUID_VERSION_INFO
103 ///
104 UINT32 SteppingId;
105 ///
106 /// The Processor Type of the CPU computed from CPUID leaf CPUID_VERSION_INFO
107 ///
108 UINT32 ProcessorType;
109 ///
110 /// Bit field structured returned in ECX from CPUID leaf CPUID_VERSION_INFO
111 ///
112 CPUID_VERSION_INFO_ECX CpuIdVersionInfoEcx;
113 ///
114 /// Bit field structured returned in EDX from CPUID leaf CPUID_VERSION_INFO
115 ///
116 CPUID_VERSION_INFO_EDX CpuIdVersionInfoEdx;
117} REGISTER_CPU_FEATURE_INFORMATION;
118
119/**
120 Determines if a CPU feature is enabled in PcdCpuFeaturesSupport bit mask.
121 If a CPU feature is disabled in PcdCpuFeaturesSupport then all the code/data
122 associated with that feature should be optimized away if compiler
123 optimizations are enabled.
124
125 @param[in] Feature The bit number of the CPU feature to check in the PCD
126 PcdCpuFeaturesSupport.
127
128 @retval TRUE The CPU feature is set in PcdCpuFeaturesSupport.
129 @retval FALSE The CPU feature is not set in PcdCpuFeaturesSupport.
130
131 @note This service could be called by BSP only.
132**/
133BOOLEAN
134EFIAPI
135IsCpuFeatureSupported (
136 IN UINT32 Feature
137 );
138
139/**
140 Determines if a CPU feature is set in PcdCpuFeaturesSetting bit mask.
141
142 @param[in] Feature The bit number of the CPU feature to check in the PCD
143 PcdCpuFeaturesSetting.
144
145 @retval TRUE The CPU feature is set in PcdCpuFeaturesSetting.
146 @retval FALSE The CPU feature is not set in PcdCpuFeaturesSetting.
147
148 @note This service could be called by BSP only.
149**/
150BOOLEAN
151EFIAPI
152IsCpuFeatureInSetting (
153 IN UINT32 Feature
154 );
155
156/**
157 Determines if a CPU feature is set in PcdCpuFeaturesCapability bit mask.
158
159 @param[in] Feature The bit number of the CPU feature to check in the PCD
160 PcdCpuFeaturesCapability.
161
162 @retval TRUE The CPU feature is set in PcdCpuFeaturesCapability.
163 @retval FALSE The CPU feature is not set in PcdCpuFeaturesCapability.
164
165 @note This service could be called by BSP only.
166**/
167BOOLEAN
168EFIAPI
169IsCpuFeatureCapability (
170 IN UINT32 Feature
171 );
172
173/**
174 Determines if a CPU feature is set in PcdCpuFeaturesUserConfiguration bit mask.
175
176 @param[in] Feature The bit number of the CPU feature to check in the PCD
177 PcdCpuFeaturesUserConfiguration.
178
179 @retval TRUE The CPU feature is set in PcdCpuFeaturesUserConfiguration.
180 @retval FALSE The CPU feature is not set in PcdCpuFeaturesUserConfiguration.
181
182 @note This service could be called by BSP only.
183**/
184BOOLEAN
185EFIAPI
186IsCpuFeatureUserConfiguration (
187 IN UINT32 Feature
188 );
189
190/**
191 Prepares for the data used by CPU feature detection and initialization.
192
193 @param[in] NumberOfProcessors The number of CPUs in the platform.
194
195 @return Pointer to a buffer of CPU related configuration data.
196
197 @note This service could be called by BSP only.
198**/
199typedef
200VOID *
201(EFIAPI *CPU_FEATURE_GET_CONFIG_DATA)(
202 IN UINTN NumberOfProcessors
203 );
204
205/**
206 Detects if CPU feature supported on current processor.
207
208 @param[in] ProcessorNumber The index of the CPU executing this function.
209 @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
210 structure for the CPU executing this function.
211 @param[in] ConfigData A pointer to the configuration buffer returned
212 by CPU_FEATURE_GET_CONFIG_DATA. NULL if
213 CPU_FEATURE_GET_CONFIG_DATA was not provided in
214 RegisterCpuFeature().
215
216 @retval TRUE CPU feature is supported.
217 @retval FALSE CPU feature is not supported.
218
219 @note This service could be called by BSP/APs.
220**/
221typedef
222BOOLEAN
223(EFIAPI *CPU_FEATURE_SUPPORT)(
224 IN UINTN ProcessorNumber,
225 IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
226 IN VOID *ConfigData OPTIONAL
227 );
228
229/**
230 Initializes CPU feature to specific state.
231
232 This service does not initialize hardware and only produces entries in the
233 Register Table for specified processor. Hardware initialization on BSP/APs
234 will be done in CpuFeaturesInitialize().
235
236 @param[in] ProcessorNumber The index of the CPU executing this function.
237 @param[in] CpuInfo A pointer to the REGISTER_CPU_FEATURE_INFORMATION
238 structure for the CPU executing this function.
239 @param[in] ConfigData A pointer to the configuration buffer returned
240 by CPU_FEATURE_GET_CONFIG_DATA. NULL if
241 CPU_FEATURE_GET_CONFIG_DATA was not provided in
242 RegisterCpuFeature().
243 @param[in] State If TRUE, then the CPU feature must be enabled.
244 If FALSE, then the CPU feature must be disabled.
245
246 @retval RETURN_SUCCESS CPU feature is initialized.
247
248 @note This service could be called by BSP only.
249**/
250typedef
251RETURN_STATUS
252(EFIAPI *CPU_FEATURE_INITIALIZE)(
253 IN UINTN ProcessorNumber,
254 IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo,
255 IN VOID *ConfigData, OPTIONAL
256 IN BOOLEAN State
257 );
258
259/**
260 Registers a CPU Feature.
261
262 @param[in] FeatureName A Null-terminated Ascii string indicates CPU feature
263 name.
264 @param[in] GetConfigDataFunc CPU feature get configuration data function. This
265 is an optional parameter that may be NULL. If NULL,
266 then the most recently registered function for the
267 CPU feature is used. If no functions are registered
268 for a CPU feature, then the CPU configuration data
269 for the registered feature is NULL.
270 @param[in] SupportFunc CPU feature support function. This is an optional
271 parameter that may be NULL. If NULL, then the most
272 recently registered function for the CPU feature is
273 used. If no functions are registered for a CPU
274 feature, then the CPU feature is assumed to be
275 supported by all CPUs.
276 @param[in] InitializeFunc CPU feature initialize function. This is an optional
277 parameter that may be NULL. If NULL, then the most
278 recently registered function for the CPU feature is
279 used. If no functions are registered for a CPU
280 feature, then the CPU feature initialization is
281 skipped.
282 @param[in] ... Variable argument list of UINT32 CPU feature value.
283 Values with no modifiers are the features provided
284 by the registered functions.
285 Values with CPU_FEATURE_BEFORE modifier are features
286 that must be initialized after the features provided
287 by the registered functions are used.
288 Values with CPU_FEATURE_AFTER modifier are features
289 that must be initialized before the features provided
290 by the registered functions are used.
291 The last argument in this variable argument list must
292 always be CPU_FEATURE_END.
293
294 @retval RETURN_SUCCESS The CPU feature was successfully registered.
295 @retval RETURN_OUT_OF_RESOURCES There are not enough resources to register
296 the CPU feature.
297 @retval RETURN_UNSUPPORTED Registration of the CPU feature is not
298 supported due to a circular dependency between
299 BEFORE and AFTER features.
300
301 @note This service could be called by BSP only.
302**/
303RETURN_STATUS
304EFIAPI
305RegisterCpuFeature (
306 IN CHAR8 *FeatureName, OPTIONAL
307 IN CPU_FEATURE_GET_CONFIG_DATA GetConfigDataFunc, OPTIONAL
308 IN CPU_FEATURE_SUPPORT SupportFunc, OPTIONAL
309 IN CPU_FEATURE_INITIALIZE InitializeFunc, OPTIONAL
310 ...
311 );
312
313/**
314 Performs CPU features detection.
315
316 This service will invoke MP service to check CPU features'
317 capabilities on BSP/APs.
318
319 @note This service could be called by BSP only.
320**/
321VOID
322EFIAPI
323CpuFeaturesDetect (
324 VOID
325 );
326
327/**
328 Performs CPU features Initialization.
329
330 This service will invoke MP service to perform CPU features
331 initialization on BSP/APs per user configuration.
332
333 @note This service could be called by BSP only.
334**/
335VOID
336EFIAPI
337CpuFeaturesInitialize (
338 VOID
339 );
340
341/**
342 Switches to assigned BSP after CPU features initialization.
343
344 @param[in] ProcessorNumber The index of the CPU executing this function.
345
346 @note This service could be called by BSP only.
347**/
348VOID
349EFIAPI
350SwitchBspAfterFeaturesInitialize (
351 IN UINTN ProcessorNumber
352 );
353
354/**
355 Adds an entry in specified register table.
356
357 This function adds an entry in specified register table, with given register type,
358 register index, bit section and value.
359
360 @param[in] ProcessorNumber The index of the CPU to add a register table entry.
361 @param[in] RegisterType Type of the register to program
362 @param[in] Index Index of the register to program
363 @param[in] ValueMask Mask of bits in register to write
364 @param[in] Value Value to write
365
366 @note This service could be called by BSP only.
367**/
368VOID
369EFIAPI
370CpuRegisterTableWrite (
371 IN UINTN ProcessorNumber,
372 IN REGISTER_TYPE RegisterType,
373 IN UINT64 Index,
374 IN UINT64 ValueMask,
375 IN UINT64 Value
376 );
377
378/**
379 Adds an entry in specified Pre-SMM register table.
380
381 This function adds an entry in specified register table, with given register type,
382 register index, bit section and value.
383
384 @param[in] ProcessorNumber The index of the CPU to add a register table entry.
385 @param[in] RegisterType Type of the register to program
386 @param[in] Index Index of the register to program
387 @param[in] ValueMask Mask of bits in register to write
388 @param[in] Value Value to write
389
390 @note This service could be called by BSP only.
391**/
392VOID
393EFIAPI
394PreSmmCpuRegisterTableWrite (
395 IN UINTN ProcessorNumber,
396 IN REGISTER_TYPE RegisterType,
397 IN UINT64 Index,
398 IN UINT64 ValueMask,
399 IN UINT64 Value
400 );
401
402/**
403 Adds a 32-bit register write entry in specified register table.
404
405 This macro adds an entry in specified register table, with given register type,
406 register index, and value.
407
408 @param[in] ProcessorNumber The index of the CPU to add a register table entry.
409 @param[in] RegisterType Type of the register to program
410 @param[in] Index Index of the register to program
411 @param[in] Value Value to write
412
413 @note This service could be called by BSP only.
414**/
415#define CPU_REGISTER_TABLE_WRITE32(ProcessorNumber, RegisterType, Index, Value) \
416 do { \
417 CpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, MAX_UINT32, Value); \
418 } while(FALSE);
419
420/**
421 Adds a 64-bit register write entry in specified register table.
422
423 This macro adds an entry in specified register table, with given register type,
424 register index, and value.
425
426 @param[in] ProcessorNumber The index of the CPU to add a register table entry.
427 @param[in] RegisterType Type of the register to program
428 @param[in] Index Index of the register to program
429 @param[in] Value Value to write
430
431 @note This service could be called by BSP only.
432**/
433#define CPU_REGISTER_TABLE_WRITE64(ProcessorNumber, RegisterType, Index, Value) \
434 do { \
435 CpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, MAX_UINT64, Value); \
436 } while(FALSE);
437
438/**
439 Adds a bit field write entry in specified register table.
440
441 This macro adds an entry in specified register table, with given register type,
442 register index, bit field section, and value.
443
444 @param[in] ProcessorNumber The index of the CPU to add a register table entry.
445 @param[in] RegisterType Type of the register to program.
446 @param[in] Index Index of the register to program.
447 @param[in] Type The data type name of a register structure.
448 @param[in] Field The bit fiel name in register structure to write.
449 @param[in] Value Value to write to the bit field.
450
451 @note This service could be called by BSP only.
452**/
453#define CPU_REGISTER_TABLE_WRITE_FIELD(ProcessorNumber, RegisterType, Index, Type, Field, Value) \
454 do { \
455 UINT64 ValueMask; \
456 ValueMask = MAX_UINT64; \
457 ((Type *)(&ValueMask))->Field = 0; \
458 CpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, ~ValueMask, Value); \
459 } while(FALSE);
460
461/**
462 Adds a 32-bit register write entry in specified register table.
463
464 This macro adds an entry in specified register table, with given register type,
465 register index, and value.
466
467 @param[in] ProcessorNumber The index of the CPU to add a register table entry.
468 @param[in] RegisterType Type of the register to program
469 @param[in] Index Index of the register to program
470 @param[in] Value Value to write
471
472 @note This service could be called by BSP only.
473**/
474#define PRE_SMM_CPU_REGISTER_TABLE_WRITE32(ProcessorNumber, RegisterType, Index, Value) \
475 do { \
476 PreSmmCpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, MAX_UINT32, Value); \
477 } while(FALSE);
478
479/**
480 Adds a 64-bit register write entry in specified register table.
481
482 This macro adds an entry in specified register table, with given register type,
483 register index, and value.
484
485 @param[in] ProcessorNumber The index of the CPU to add a register table entry.
486 @param[in] RegisterType Type of the register to program
487 @param[in] Index Index of the register to program
488 @param[in] Value Value to write
489
490 @note This service could be called by BSP only.
491**/
492#define PRE_SMM_CPU_REGISTER_TABLE_WRITE64(ProcessorNumber, RegisterType, Index, Value) \
493 do { \
494 PreSmmCpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, MAX_UINT64, Value); \
495 } while(FALSE);
496
497/**
498 Adds a bit field write entry in specified register table.
499
500 This macro adds an entry in specified register table, with given register type,
501 register index, bit field section, and value.
502
503 @param[in] ProcessorNumber The index of the CPU to add a register table entry.
504 @param[in] RegisterType Type of the register to program.
505 @param[in] Index Index of the register to program.
506 @param[in] Type The data type name of a register structure.
507 @param[in] Field The bit fiel name in register structure to write.
508 @param[in] Value Value to write to the bit field.
509
510 @note This service could be called by BSP only.
511**/
512#define PRE_SMM_CPU_REGISTER_TABLE_WRITE_FIELD(ProcessorNumber, RegisterType, Index, Type, Field, Value) \
513 do { \
514 UINT64 ValueMask; \
515 ValueMask = MAX_UINT64; \
516 ((Type *)(&ValueMask))->Field = 0; \
517 PreSmmCpuRegisterTableWrite (ProcessorNumber, RegisterType, Index, ~ValueMask, Value); \
518 } while(FALSE);
519
520#endif
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