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1/**@file\r
2\r
3Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r
4This program and the accompanying materials\r
5are licensed and made available under the terms and conditions of the BSD License\r
6which accompanies this distribution. The full text of the license may be found at\r
7http://opensource.org/licenses/bsd-license.php\r
8\r
9THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
10WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
11\r
12Module Name:\r
13\r
14 Cpu.c\r
15\r
16Abstract:\r
17\r
18 NT Emulation Architectural Protocol Driver as defined in Tiano.\r
19 This CPU module abstracts the interrupt subsystem of a platform and\r
20 the CPU-specific setjump/long pair. Other services are not implemented\r
21 in this driver.\r
22\r
23**/\r
24\r
25\r
26#include "CpuDriver.h"\r
27\r
28UINT64 mTimerPeriod;\r
29\r
30CPU_ARCH_PROTOCOL_PRIVATE mCpuTemplate = {\r
31 CPU_ARCH_PROT_PRIVATE_SIGNATURE,\r
32 NULL,\r
33 {\r
34 WinNtFlushCpuDataCache,\r
35 WinNtEnableInterrupt,\r
36 WinNtDisableInterrupt,\r
37 WinNtGetInterruptState,\r
38 WinNtInit,\r
39 WinNtRegisterInterruptHandler,\r
40 WinNtGetTimerValue,\r
41 WinNtSetMemoryAttributes,\r
42 1,\r
43 4\r
44 },\r
45 {\r
46 CpuMemoryServiceRead,\r
47 CpuMemoryServiceWrite,\r
48 CpuIoServiceRead,\r
49 CpuIoServiceWrite\r
50 },\r
51 0,\r
52 TRUE\r
53};\r
54\r
55#define EFI_CPU_DATA_MAXIMUM_LENGTH 0x100\r
56\r
57\r
58\r
59//\r
60// Service routines for the driver\r
61//\r
62EFI_STATUS\r
63EFIAPI\r
64WinNtFlushCpuDataCache (\r
65 IN EFI_CPU_ARCH_PROTOCOL *This,\r
66 IN EFI_PHYSICAL_ADDRESS Start,\r
67 IN UINT64 Length,\r
68 IN EFI_CPU_FLUSH_TYPE FlushType\r
69 )\r
70/*++\r
71\r
72Routine Description:\r
73\r
74 This routine would provide support for flushing the CPU data cache.\r
75 In the case of NT emulation environment, this flushing is not necessary and\r
76 is thus not implemented.\r
77\r
78Arguments:\r
79\r
80 Pointer to CPU Architectural Protocol interface\r
81 Start adddress in memory to flush\r
82 Length of memory to flush\r
83 Flush type\r
84\r
85Returns:\r
86\r
87 Status\r
88 EFI_SUCCESS\r
89\r
90--*/\r
91// TODO: This - add argument and description to function comment\r
92// TODO: FlushType - add argument and description to function comment\r
93// TODO: EFI_UNSUPPORTED - add return value to function comment\r
94{\r
95 if (FlushType == EfiCpuFlushTypeWriteBackInvalidate) {\r
96 //\r
97 // Only WB flush is supported. We actually need do nothing on NT emulator\r
98 // environment. Classify this to follow EFI spec\r
99 //\r
100 return EFI_SUCCESS;\r
101 }\r
102 //\r
103 // Other flush types are not supported by NT emulator\r
104 //\r
105 return EFI_UNSUPPORTED;\r
106}\r
107\r
108\r
109EFI_STATUS\r
110EFIAPI\r
111WinNtEnableInterrupt (\r
112 IN EFI_CPU_ARCH_PROTOCOL *This\r
113 )\r
114/*++\r
115\r
116Routine Description:\r
117\r
118 This routine provides support for emulation of the interrupt enable of the\r
119 the system. For our purposes, CPU enable is just a BOOLEAN that the Timer\r
120 Architectural Protocol observes in order to defer behaviour while in its\r
121 emulated interrupt, or timer tick.\r
122\r
123Arguments:\r
124\r
125 Pointer to CPU Architectural Protocol interface\r
126\r
127Returns:\r
128\r
129 Status\r
130 EFI_SUCCESS\r
131\r
132--*/\r
133// TODO: This - add argument and description to function comment\r
134{\r
135 CPU_ARCH_PROTOCOL_PRIVATE *Private;\r
136\r
137 Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r
138 Private->InterruptState = TRUE;\r
139 return EFI_SUCCESS;\r
140}\r
141\r
142\r
143EFI_STATUS\r
144EFIAPI\r
145WinNtDisableInterrupt (\r
146 IN EFI_CPU_ARCH_PROTOCOL *This\r
147 )\r
148/*++\r
149\r
150Routine Description:\r
151\r
152 This routine provides support for emulation of the interrupt disable of the\r
153 the system. For our purposes, CPU enable is just a BOOLEAN that the Timer\r
154 Architectural Protocol observes in order to defer behaviour while in its\r
155 emulated interrupt, or timer tick.\r
156\r
157Arguments:\r
158\r
159 Pointer to CPU Architectural Protocol interface\r
160\r
161Returns:\r
162\r
163 Status\r
164 EFI_SUCCESS\r
165\r
166--*/\r
167// TODO: This - add argument and description to function comment\r
168{\r
169 CPU_ARCH_PROTOCOL_PRIVATE *Private;\r
170\r
171 Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r
172 Private->InterruptState = FALSE;\r
173 return EFI_SUCCESS;\r
174}\r
175\r
176\r
177EFI_STATUS\r
178EFIAPI\r
179WinNtGetInterruptState (\r
180 IN EFI_CPU_ARCH_PROTOCOL *This,\r
181 OUT BOOLEAN *State\r
182 )\r
183/*++\r
184\r
185Routine Description:\r
186\r
187 This routine provides support for emulation of the interrupt disable of the\r
188 the system. For our purposes, CPU enable is just a BOOLEAN that the Timer\r
189 Architectural Protocol observes in order to defer behaviour while in its\r
190 emulated interrupt, or timer tick.\r
191\r
192Arguments:\r
193\r
194 Pointer to CPU Architectural Protocol interface\r
195\r
196Returns:\r
197\r
198 Status\r
199 EFI_SUCCESS\r
200\r
201--*/\r
202// TODO: This - add argument and description to function comment\r
203// TODO: State - add argument and description to function comment\r
204// TODO: EFI_INVALID_PARAMETER - add return value to function comment\r
205{\r
206 CPU_ARCH_PROTOCOL_PRIVATE *Private;\r
207\r
208 if (State == NULL) {\r
209 return EFI_INVALID_PARAMETER;\r
210 }\r
211\r
212 Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r
213 *State = Private->InterruptState;\r
214 return EFI_SUCCESS;\r
215}\r
216\r
217\r
218EFI_STATUS\r
219EFIAPI\r
220WinNtInit (\r
221 IN EFI_CPU_ARCH_PROTOCOL *This,\r
222 IN EFI_CPU_INIT_TYPE InitType\r
223 )\r
224/*++\r
225\r
226Routine Description:\r
227\r
228 This routine would support generation of a CPU INIT. At\r
229 present, this code does not provide emulation.\r
230\r
231Arguments:\r
232\r
233 Pointer to CPU Architectural Protocol interface\r
234 INIT Type\r
235\r
236Returns:\r
237\r
238 Status\r
239 EFI_UNSUPPORTED - not yet implemented\r
240\r
241--*/\r
242// TODO: This - add argument and description to function comment\r
243// TODO: InitType - add argument and description to function comment\r
244{\r
245 return EFI_UNSUPPORTED;\r
246}\r
247\r
248\r
249EFI_STATUS\r
250EFIAPI\r
251WinNtRegisterInterruptHandler (\r
252 IN EFI_CPU_ARCH_PROTOCOL *This,\r
253 IN EFI_EXCEPTION_TYPE InterruptType,\r
254 IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler\r
255 )\r
256/*++\r
257\r
258Routine Description:\r
259\r
260 This routine would support registration of an interrupt handler. At\r
261 present, this code does not provide emulation.\r
262\r
263Arguments:\r
264\r
265 Pointer to CPU Architectural Protocol interface\r
266 Pointer to interrupt handlers\r
267 Interrupt type\r
268\r
269Returns:\r
270\r
271 Status\r
272 EFI_UNSUPPORTED - not yet implemented\r
273\r
274--*/\r
275// TODO: This - add argument and description to function comment\r
276// TODO: InterruptType - add argument and description to function comment\r
277// TODO: InterruptHandler - add argument and description to function comment\r
278{\r
279\r
280 //\r
281 // Do parameter checking for EFI spec conformance\r
282 //\r
283 if (InterruptType < 0 || InterruptType > 0xff) {\r
284 return EFI_UNSUPPORTED;\r
285 }\r
286 //\r
287 // Do nothing for Nt32 emulation\r
288 //\r
289 return EFI_UNSUPPORTED;\r
290}\r
291\r
292\r
293EFI_STATUS\r
294EFIAPI\r
295WinNtGetTimerValue (\r
296 IN EFI_CPU_ARCH_PROTOCOL *This,\r
297 IN UINT32 TimerIndex,\r
298 OUT UINT64 *TimerValue,\r
299 OUT UINT64 *TimerPeriod OPTIONAL\r
300 )\r
301/*++\r
302\r
303Routine Description:\r
304\r
305 This routine would support querying of an on-CPU timer. At present,\r
306 this code does not provide timer emulation.\r
307\r
308Arguments:\r
309\r
310 This - Pointer to CPU Architectural Protocol interface\r
311 TimerIndex - Index of given CPU timer\r
312 TimerValue - Output of the timer\r
313 TimerPeriod - Output of the timer period\r
314\r
315Returns:\r
316\r
317 EFI_UNSUPPORTED - not yet implemented\r
318 EFI_INVALID_PARAMETER - TimeValue is NULL\r
319\r
320--*/\r
321{\r
322 if (TimerValue == NULL) {\r
323 return EFI_INVALID_PARAMETER;\r
324 }\r
325 \r
326 if (TimerIndex != 0) {\r
327 return EFI_INVALID_PARAMETER;\r
328 }\r
329 \r
330 gWinNt->QueryPerformanceCounter ((LARGE_INTEGER *)TimerValue);\r
331 \r
332 if (TimerPeriod != NULL) {\r
333 *TimerPeriod = mTimerPeriod;\r
334 }\r
335 \r
336 return EFI_SUCCESS;\r
337}\r
338\r
339\r
340EFI_STATUS\r
341EFIAPI\r
342WinNtSetMemoryAttributes (\r
343 IN EFI_CPU_ARCH_PROTOCOL *This,\r
344 IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
345 IN UINT64 Length,\r
346 IN UINT64 Attributes\r
347 )\r
348/*++\r
349\r
350Routine Description:\r
351\r
352 This routine would support querying of an on-CPU timer. At present,\r
353 this code does not provide timer emulation.\r
354\r
355Arguments:\r
356\r
357 Pointer to CPU Architectural Protocol interface\r
358 Start address of memory region\r
359 The size in bytes of the memory region\r
360 The bit mask of attributes to set for the memory region\r
361\r
362Returns:\r
363\r
364 Status\r
365 EFI_UNSUPPORTED - not yet implemented\r
366\r
367--*/\r
368// TODO: This - add argument and description to function comment\r
369// TODO: BaseAddress - add argument and description to function comment\r
370// TODO: Length - add argument and description to function comment\r
371// TODO: Attributes - add argument and description to function comment\r
372// TODO: EFI_INVALID_PARAMETER - add return value to function comment\r
373{\r
374 //\r
375 // Check for invalid parameter for Spec conformance\r
376 //\r
377 if (Length == 0) {\r
378 return EFI_INVALID_PARAMETER;\r
379 }\r
380\r
381 //\r
382 // Do nothing for Nt32 emulation\r
383 //\r
384 return EFI_UNSUPPORTED;\r
385}\r
386\r
387\r
388\r
389/**\r
390 Logs SMBIOS record.\r
391\r
392 @param Smbios Pointer to SMBIOS protocol instance.\r
393 @param Buffer Pointer to the data buffer.\r
394\r
395**/\r
396VOID\r
397LogSmbiosData (\r
398 IN EFI_SMBIOS_PROTOCOL *Smbios,\r
399 IN UINT8 *Buffer\r
400 )\r
401{\r
402 EFI_STATUS Status;\r
403 EFI_SMBIOS_HANDLE SmbiosHandle;\r
404 \r
405 SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;\r
406 Status = Smbios->Add (\r
407 Smbios,\r
408 NULL,\r
409 &SmbiosHandle,\r
410 (EFI_SMBIOS_TABLE_HEADER*)Buffer\r
411 );\r
412 ASSERT_EFI_ERROR (Status);\r
413}\r
414\r
415\r
416VOID\r
417CpuUpdateSmbios (\r
418 VOID\r
419 )\r
420/*++\r
421\r
422Routine Description:\r
423 This function will log processor version and frequency data to Smbios.\r
424\r
425Arguments:\r
426 Event - Event whose notification function is being invoked.\r
427 Context - Pointer to the notification function's context.\r
428\r
429Returns:\r
430 None.\r
431\r
432--*/\r
433{\r
434 EFI_STATUS Status;\r
435 UINT32 TotalSize;\r
436 EFI_SMBIOS_PROTOCOL *Smbios;\r
437 EFI_HII_HANDLE HiiHandle;\r
438 STRING_REF Token;\r
439 UINTN CpuVerStrLen;\r
440 EFI_STRING CpuVerStr;\r
441 SMBIOS_TABLE_TYPE4 *SmbiosRecord;\r
442 CHAR8 *OptionalStrStart;\r
443\r
444 //\r
445 // Locate Smbios protocol.\r
446 //\r
447 Status = gBS->LocateProtocol (&gEfiSmbiosProtocolGuid, NULL, (VOID **)&Smbios);\r
448 \r
449 if (EFI_ERROR (Status)) {\r
450 return;\r
451 }\r
452\r
453 //\r
454 // Initialize strings to HII database\r
455 //\r
456 HiiHandle = HiiAddPackages (\r
457 &gEfiCallerIdGuid,\r
458 NULL,\r
459 CpuStrings,\r
460 NULL\r
461 );\r
462 ASSERT (HiiHandle != NULL);\r
463\r
464 Token = STRING_TOKEN (STR_PROCESSOR_VERSION);\r
465 CpuVerStr = HiiGetPackageString(&gEfiCallerIdGuid, Token, NULL);\r
466 CpuVerStrLen = StrLen(CpuVerStr);\r
467 ASSERT (CpuVerStrLen <= SMBIOS_STRING_MAX_LENGTH);\r
468\r
469\r
470 TotalSize = (UINT32)(sizeof(SMBIOS_TABLE_TYPE4) + CpuVerStrLen + 1 + 1);\r
471 SmbiosRecord = AllocatePool(TotalSize);\r
472 ZeroMem(SmbiosRecord, TotalSize);\r
473\r
474 SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_PROCESSOR_INFORMATION;\r
475 SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE4);\r
476 //\r
477 // Make handle chosen by smbios protocol.add automatically.\r
478 //\r
479 SmbiosRecord->Hdr.Handle = 0; \r
480 //\r
481 // Processor version is the 1st string.\r
482 //\r
483 SmbiosRecord->ProcessorVersion = 1;\r
484 //\r
485 // Store CPU frequency data record to data hub - It's an emulator so make up a value\r
486 //\r
487 SmbiosRecord->CurrentSpeed = 1234;\r
488\r
489 OptionalStrStart = (CHAR8 *)(SmbiosRecord + 1);\r
490 UnicodeStrToAsciiStr(CpuVerStr, OptionalStrStart);\r
491\r
492 //\r
493 // Now we have got the full smbios record, call smbios protocol to add this record.\r
494 //\r
495 LogSmbiosData(Smbios, (UINT8 *) SmbiosRecord);\r
496 FreePool (SmbiosRecord);\r
497\r
498}\r
499\r
500\r
501\r
502EFI_STATUS\r
503EFIAPI\r
504InitializeCpu (\r
505 IN EFI_HANDLE ImageHandle,\r
506 IN EFI_SYSTEM_TABLE *SystemTable\r
507 )\r
508/*++\r
509\r
510Routine Description:\r
511\r
512 Initialize the state information for the CPU Architectural Protocol\r
513\r
514Arguments:\r
515\r
516 ImageHandle of the loaded driver\r
517 Pointer to the System Table\r
518\r
519Returns:\r
520\r
521 Status\r
522\r
523 EFI_SUCCESS - protocol instance can be published\r
524 EFI_OUT_OF_RESOURCES - cannot allocate protocol data structure\r
525 EFI_DEVICE_ERROR - cannot create the thread\r
526\r
527--*/\r
528{\r
529 EFI_STATUS Status;\r
530 UINT64 Frequency;\r
531\r
532 //\r
533 // Retrieve the frequency of the performance counter in Hz.\r
534 // \r
535 gWinNt->QueryPerformanceFrequency ((LARGE_INTEGER *)&Frequency);\r
536 \r
537 //\r
538 // Convert frequency in Hz to a clock period in femtoseconds.\r
539 //\r
540 mTimerPeriod = DivU64x64Remainder (1000000000000000, Frequency, NULL);\r
541 \r
542 CpuUpdateSmbios ();\r
543\r
544 Status = gBS->InstallMultipleProtocolInterfaces (\r
545 &mCpuTemplate.Handle,\r
546 &gEfiCpuArchProtocolGuid, &mCpuTemplate.Cpu,\r
547 &gEfiCpuIo2ProtocolGuid, &mCpuTemplate.CpuIo,\r
548 NULL\r
549 );\r
550 ASSERT_EFI_ERROR (Status);\r
551\r
552 return Status;\r
553}\r
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