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1 | /*++ @file\r | |
2 | Emu driver to produce CPU Architectural Protocol.\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r | |
5 | Portions copyright (c) 2011, Apple Inc. All rights reserved.\r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include "CpuDriver.h"\r | |
17 | \r | |
18 | UINT64 mTimerPeriod;\r | |
19 | \r | |
20 | CPU_ARCH_PROTOCOL_PRIVATE mCpuTemplate = {\r | |
21 | CPU_ARCH_PROT_PRIVATE_SIGNATURE,\r | |
22 | NULL,\r | |
23 | {\r | |
24 | EmuFlushCpuDataCache,\r | |
25 | EmuEnableInterrupt,\r | |
26 | EmuDisableInterrupt,\r | |
27 | EmuGetInterruptState,\r | |
28 | EmuInit,\r | |
29 | EmuRegisterInterruptHandler,\r | |
30 | EmuGetTimerValue,\r | |
31 | EmuSetMemoryAttributes,\r | |
32 | 0,\r | |
33 | 4\r | |
34 | },\r | |
35 | {\r | |
36 | {\r | |
37 | CpuMemoryServiceRead,\r | |
38 | CpuMemoryServiceWrite\r | |
39 | },\r | |
40 | {\r | |
41 | CpuIoServiceRead,\r | |
42 | CpuIoServiceWrite\r | |
43 | }\r | |
44 | },\r | |
45 | TRUE\r | |
46 | };\r | |
47 | \r | |
48 | #define EFI_CPU_DATA_MAXIMUM_LENGTH 0x100\r | |
49 | \r | |
50 | \r | |
51 | \r | |
52 | //\r | |
53 | // Service routines for the driver\r | |
54 | //\r | |
55 | EFI_STATUS\r | |
56 | EFIAPI\r | |
57 | EmuFlushCpuDataCache (\r | |
58 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
59 | IN EFI_PHYSICAL_ADDRESS Start,\r | |
60 | IN UINT64 Length,\r | |
61 | IN EFI_CPU_FLUSH_TYPE FlushType\r | |
62 | )\r | |
63 | {\r | |
64 | if (FlushType == EfiCpuFlushTypeWriteBackInvalidate) {\r | |
65 | //\r | |
66 | // Only WB flush is supported. We actually need do nothing on Emu emulator\r | |
67 | // environment. Classify this to follow EFI spec\r | |
68 | //\r | |
69 | return EFI_SUCCESS;\r | |
70 | }\r | |
71 | //\r | |
72 | // Other flush types are not supported by Emu emulator\r | |
73 | //\r | |
74 | return EFI_UNSUPPORTED;\r | |
75 | }\r | |
76 | \r | |
77 | EFI_STATUS\r | |
78 | EFIAPI\r | |
79 | EmuEnableInterrupt (\r | |
80 | IN EFI_CPU_ARCH_PROTOCOL *This\r | |
81 | )\r | |
82 | {\r | |
83 | CPU_ARCH_PROTOCOL_PRIVATE *Private;\r | |
84 | \r | |
85 | Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r | |
86 | Private->InterruptState = TRUE;\r | |
87 | gEmuThunk->EnableInterrupt ();\r | |
88 | return EFI_SUCCESS;\r | |
89 | }\r | |
90 | \r | |
91 | EFI_STATUS\r | |
92 | EFIAPI\r | |
93 | EmuDisableInterrupt (\r | |
94 | IN EFI_CPU_ARCH_PROTOCOL *This\r | |
95 | )\r | |
96 | {\r | |
97 | CPU_ARCH_PROTOCOL_PRIVATE *Private;\r | |
98 | \r | |
99 | Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r | |
100 | Private->InterruptState = FALSE;\r | |
101 | gEmuThunk->DisableInterrupt ();\r | |
102 | return EFI_SUCCESS;\r | |
103 | }\r | |
104 | \r | |
105 | EFI_STATUS\r | |
106 | EFIAPI\r | |
107 | EmuGetInterruptState (\r | |
108 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
109 | OUT BOOLEAN *State\r | |
110 | )\r | |
111 | {\r | |
112 | CPU_ARCH_PROTOCOL_PRIVATE *Private;\r | |
113 | \r | |
114 | if (State == NULL) {\r | |
115 | return EFI_INVALID_PARAMETER;\r | |
116 | }\r | |
117 | \r | |
118 | Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);\r | |
119 | *State = Private->InterruptState;\r | |
120 | return EFI_SUCCESS;\r | |
121 | }\r | |
122 | \r | |
123 | EFI_STATUS\r | |
124 | EFIAPI\r | |
125 | EmuInit (\r | |
126 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
127 | IN EFI_CPU_INIT_TYPE InitType\r | |
128 | )\r | |
129 | {\r | |
130 | return EFI_UNSUPPORTED;\r | |
131 | }\r | |
132 | \r | |
133 | EFI_STATUS\r | |
134 | EFIAPI\r | |
135 | EmuRegisterInterruptHandler (\r | |
136 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
137 | IN EFI_EXCEPTION_TYPE InterruptType,\r | |
138 | IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler\r | |
139 | )\r | |
140 | {\r | |
141 | //\r | |
142 | // Do parameter checking for EFI spec conformance\r | |
143 | //\r | |
144 | if (InterruptType < 0 || InterruptType > 0xff) {\r | |
145 | return EFI_UNSUPPORTED;\r | |
146 | }\r | |
147 | //\r | |
148 | // Do nothing for Emu emulation\r | |
149 | //\r | |
150 | return EFI_UNSUPPORTED;\r | |
151 | }\r | |
152 | \r | |
153 | EFI_STATUS\r | |
154 | EFIAPI\r | |
155 | EmuGetTimerValue (\r | |
156 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
157 | IN UINT32 TimerIndex,\r | |
158 | OUT UINT64 *TimerValue,\r | |
159 | OUT UINT64 *TimerPeriod OPTIONAL\r | |
160 | )\r | |
161 | {\r | |
162 | if (TimerValue == NULL) {\r | |
163 | return EFI_INVALID_PARAMETER;\r | |
164 | }\r | |
165 | \r | |
166 | if (TimerIndex != 0) {\r | |
167 | return EFI_INVALID_PARAMETER;\r | |
168 | }\r | |
169 | \r | |
170 | *TimerValue = gEmuThunk->QueryPerformanceCounter ();\r | |
171 | \r | |
172 | if (TimerPeriod != NULL) {\r | |
173 | *TimerPeriod = mTimerPeriod;\r | |
174 | }\r | |
175 | \r | |
176 | return EFI_SUCCESS;\r | |
177 | }\r | |
178 | \r | |
179 | \r | |
180 | EFI_STATUS\r | |
181 | EFIAPI\r | |
182 | EmuSetMemoryAttributes (\r | |
183 | IN EFI_CPU_ARCH_PROTOCOL *This,\r | |
184 | IN EFI_PHYSICAL_ADDRESS BaseAddress,\r | |
185 | IN UINT64 Length,\r | |
186 | IN UINT64 Attributes\r | |
187 | )\r | |
188 | {\r | |
189 | //\r | |
190 | // Check for invalid parameter for Spec conformance\r | |
191 | //\r | |
192 | if (Length == 0) {\r | |
193 | return EFI_INVALID_PARAMETER;\r | |
194 | }\r | |
195 | \r | |
196 | //\r | |
197 | // Do nothing for Nt32 emulation\r | |
198 | //\r | |
199 | return EFI_UNSUPPORTED;\r | |
200 | }\r | |
201 | \r | |
202 | \r | |
203 | \r | |
204 | /**\r | |
205 | Logs SMBIOS record.\r | |
206 | \r | |
207 | @param Smbios Pointer to SMBIOS protocol instance.\r | |
208 | @param Buffer Pointer to the data buffer.\r | |
209 | \r | |
210 | **/\r | |
211 | VOID\r | |
212 | LogSmbiosData (\r | |
213 | IN EFI_SMBIOS_PROTOCOL *Smbios,\r | |
214 | IN UINT8 *Buffer\r | |
215 | )\r | |
216 | {\r | |
217 | EFI_STATUS Status;\r | |
218 | EFI_SMBIOS_HANDLE SmbiosHandle;\r | |
219 | \r | |
220 | SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;\r | |
221 | Status = Smbios->Add (\r | |
222 | Smbios,\r | |
223 | NULL,\r | |
224 | &SmbiosHandle,\r | |
225 | (EFI_SMBIOS_TABLE_HEADER*)Buffer\r | |
226 | );\r | |
227 | ASSERT_EFI_ERROR (Status);\r | |
228 | }\r | |
229 | \r | |
230 | VOID\r | |
231 | CpuUpdateSmbios (\r | |
232 | VOID\r | |
233 | )\r | |
234 | {\r | |
235 | EFI_STATUS Status;\r | |
236 | UINT32 TotalSize;\r | |
237 | EFI_SMBIOS_PROTOCOL *Smbios;\r | |
238 | EFI_HII_HANDLE HiiHandle;\r | |
239 | STRING_REF Token;\r | |
240 | UINTN CpuVerStrLen;\r | |
241 | EFI_STRING CpuVerStr;\r | |
242 | SMBIOS_TABLE_TYPE4 *SmbiosRecord;\r | |
243 | CHAR8 *OptionalStrStart;\r | |
244 | \r | |
245 | //\r | |
246 | // Locate Smbios protocol.\r | |
247 | //\r | |
248 | Status = gBS->LocateProtocol (&gEfiSmbiosProtocolGuid, NULL, (VOID **)&Smbios);\r | |
249 | \r | |
250 | if (EFI_ERROR (Status)) {\r | |
251 | return;\r | |
252 | }\r | |
253 | \r | |
254 | //\r | |
255 | // Initialize strings to HII database\r | |
256 | //\r | |
257 | HiiHandle = HiiAddPackages (\r | |
258 | &gEfiCallerIdGuid,\r | |
259 | NULL,\r | |
260 | CpuStrings,\r | |
261 | NULL\r | |
262 | );\r | |
263 | ASSERT (HiiHandle != NULL);\r | |
264 | \r | |
265 | Token = STRING_TOKEN (STR_PROCESSOR_VERSION);\r | |
266 | CpuVerStr = HiiGetPackageString(&gEfiCallerIdGuid, Token, NULL);\r | |
267 | CpuVerStrLen = StrLen(CpuVerStr);\r | |
268 | ASSERT (CpuVerStrLen <= SMBIOS_STRING_MAX_LENGTH);\r | |
269 | \r | |
270 | TotalSize = sizeof(SMBIOS_TABLE_TYPE4) + CpuVerStrLen + 1 + 1;\r | |
271 | SmbiosRecord = AllocatePool(TotalSize);\r | |
272 | ZeroMem(SmbiosRecord, TotalSize);\r | |
273 | \r | |
274 | SmbiosRecord->Hdr.Type = EFI_SMBIOS_TYPE_PROCESSOR_INFORMATION;\r | |
275 | SmbiosRecord->Hdr.Length = sizeof (SMBIOS_TABLE_TYPE4);\r | |
276 | //\r | |
277 | // Make handle chosen by smbios protocol.add automatically.\r | |
278 | //\r | |
279 | SmbiosRecord->Hdr.Handle = 0;\r | |
280 | //\r | |
281 | // Processor version is the 1st string.\r | |
282 | //\r | |
283 | SmbiosRecord->ProcessorVersion = 1;\r | |
284 | //\r | |
285 | // Store CPU frequency data record to data hub - It's an emulator so make up a value\r | |
286 | //\r | |
287 | SmbiosRecord->CurrentSpeed = 1234;\r | |
288 | \r | |
289 | OptionalStrStart = (CHAR8 *)(SmbiosRecord + 1);\r | |
290 | UnicodeStrToAsciiStr(CpuVerStr, OptionalStrStart);\r | |
291 | \r | |
292 | //\r | |
293 | // Now we have got the full smbios record, call smbios protocol to add this record.\r | |
294 | //\r | |
295 | LogSmbiosData(Smbios, (UINT8 *) SmbiosRecord);\r | |
296 | FreePool (SmbiosRecord);\r | |
297 | }\r | |
298 | \r | |
299 | \r | |
300 | \r | |
301 | /**\r | |
302 | Callback function for idle events.\r | |
303 | \r | |
304 | @param Event Event whose notification function is being invoked.\r | |
305 | @param Context The pointer to the notification function's context,\r | |
306 | which is implementation-dependent.\r | |
307 | \r | |
308 | **/\r | |
309 | VOID\r | |
310 | EFIAPI\r | |
311 | IdleLoopEventCallback (\r | |
312 | IN EFI_EVENT Event,\r | |
313 | IN VOID *Context\r | |
314 | )\r | |
315 | {\r | |
316 | gEmuThunk->CpuSleep ();\r | |
317 | }\r | |
318 | \r | |
319 | \r | |
320 | EFI_STATUS\r | |
321 | EFIAPI\r | |
322 | InitializeCpu (\r | |
323 | IN EFI_HANDLE ImageHandle,\r | |
324 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
325 | )\r | |
326 | {\r | |
327 | EFI_STATUS Status;\r | |
328 | UINT64 Frequency;\r | |
329 | EFI_EVENT IdleLoopEvent;\r | |
330 | \r | |
331 | //\r | |
332 | // Retrieve the frequency of the performance counter in Hz.\r | |
333 | //\r | |
334 | Frequency = gEmuThunk->QueryPerformanceFrequency ();\r | |
335 | \r | |
336 | //\r | |
337 | // Convert frequency in Hz to a clock period in femtoseconds.\r | |
338 | //\r | |
339 | mTimerPeriod = DivU64x64Remainder (1000000000000000ULL, Frequency, NULL);\r | |
340 | \r | |
341 | CpuUpdateSmbios ();\r | |
342 | \r | |
343 | CpuMpServicesInit ();\r | |
344 | \r | |
345 | Status = gBS->CreateEventEx (\r | |
346 | EVT_NOTIFY_SIGNAL,\r | |
347 | TPL_NOTIFY,\r | |
348 | IdleLoopEventCallback,\r | |
349 | NULL,\r | |
350 | &gIdleLoopEventGuid,\r | |
351 | &IdleLoopEvent\r | |
352 | );\r | |
353 | ASSERT_EFI_ERROR (Status);\r | |
354 | \r | |
355 | \r | |
356 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
357 | &mCpuTemplate.Handle,\r | |
358 | &gEfiCpuArchProtocolGuid, &mCpuTemplate.Cpu,\r | |
359 | &gEfiCpuIo2ProtocolGuid, &mCpuTemplate.CpuIo,\r | |
360 | NULL\r | |
361 | );\r | |
362 | ASSERT_EFI_ERROR (Status);\r | |
363 | \r | |
364 | return Status;\r | |
365 | }\r |