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1 | /** @file\r | |
2 | This is the code for Boot Script Executer module.\r | |
3 | \r | |
4 | This driver is dispatched by Dxe core and the driver will reload itself to ACPI reserved memory\r | |
5 | in the entry point. The functionality is to interpret and restore the S3 boot script\r | |
6 | \r | |
7 | Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r | |
8 | \r | |
9 | This program and the accompanying materials\r | |
10 | are licensed and made available under the terms and conditions of the BSD License\r | |
11 | which accompanies this distribution. The full text of the license may be found at\r | |
12 | http://opensource.org/licenses/bsd-license.php\r | |
13 | \r | |
14 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
15 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
16 | \r | |
17 | **/\r | |
18 | \r | |
19 | #include "ScriptExecute.h"\r | |
20 | \r | |
21 | EFI_GUID mBootScriptExecutorImageGuid = {\r | |
22 | 0x9a8d3433, 0x9fe8, 0x42b6, { 0x87, 0xb, 0x1e, 0x31, 0xc8, 0x4e, 0xbe, 0x3b }\r | |
23 | };\r | |
24 | \r | |
25 | BOOLEAN mPage1GSupport = FALSE;\r | |
26 | \r | |
27 | /**\r | |
28 | Entry function of Boot script exector. This function will be executed in\r | |
29 | S3 boot path.\r | |
30 | This function should not return, because it is invoked by switch stack.\r | |
31 | \r | |
32 | @param AcpiS3Context a pointer to a structure of ACPI_S3_CONTEXT\r | |
33 | @param PeiS3ResumeState a pointer to a structure of PEI_S3_RESUME_STATE\r | |
34 | \r | |
35 | @retval EFI_INVALID_PARAMETER - OS waking vector not found\r | |
36 | @retval EFI_UNSUPPORTED - something wrong when we resume to OS\r | |
37 | **/\r | |
38 | EFI_STATUS\r | |
39 | EFIAPI\r | |
40 | S3BootScriptExecutorEntryFunction (\r | |
41 | IN ACPI_S3_CONTEXT *AcpiS3Context,\r | |
42 | IN PEI_S3_RESUME_STATE *PeiS3ResumeState\r | |
43 | )\r | |
44 | {\r | |
45 | EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r | |
46 | EFI_STATUS Status;\r | |
47 | UINTN TempStackTop;\r | |
48 | UINTN TempStack[0x10];\r | |
49 | UINTN AsmTransferControl16Address;\r | |
50 | IA32_DESCRIPTOR IdtDescriptor;\r | |
51 | \r | |
52 | //\r | |
53 | // Disable interrupt of Debug timer, since new IDT table cannot handle it.\r | |
54 | //\r | |
55 | SaveAndSetDebugTimerInterrupt (FALSE);\r | |
56 | \r | |
57 | AsmReadIdtr (&IdtDescriptor);\r | |
58 | //\r | |
59 | // Restore IDT for debug\r | |
60 | //\r | |
61 | SetIdtEntry (AcpiS3Context);\r | |
62 | \r | |
63 | //\r | |
64 | // Initialize Debug Agent to support source level debug in S3 path, it will disable interrupt and Debug Timer.\r | |
65 | //\r | |
66 | InitializeDebugAgent (DEBUG_AGENT_INIT_S3, (VOID *)&IdtDescriptor, NULL);\r | |
67 | \r | |
68 | //\r | |
69 | // Because not install BootScriptExecute PPI(used just in this module), So just pass NULL\r | |
70 | // for that parameter.\r | |
71 | //\r | |
72 | Status = S3BootScriptExecute ();\r | |
73 | \r | |
74 | //\r | |
75 | // If invalid script table or opcode in S3 boot script table.\r | |
76 | //\r | |
77 | ASSERT_EFI_ERROR (Status);\r | |
78 | \r | |
79 | if (EFI_ERROR (Status)) {\r | |
80 | CpuDeadLoop ();\r | |
81 | return Status;\r | |
82 | }\r | |
83 | \r | |
84 | AsmWbinvd ();\r | |
85 | \r | |
86 | //\r | |
87 | // Get ACPI Table Address\r | |
88 | //\r | |
89 | Facs = (EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *) ((UINTN) (AcpiS3Context->AcpiFacsTable));\r | |
90 | \r | |
91 | //\r | |
92 | // We need turn back to S3Resume - install boot script done ppi and report status code on S3resume.\r | |
93 | //\r | |
94 | if (PeiS3ResumeState != 0) {\r | |
95 | //\r | |
96 | // Need report status back to S3ResumePeim. \r | |
97 | // If boot script execution is failed, S3ResumePeim wil report the error status code.\r | |
98 | //\r | |
99 | PeiS3ResumeState->ReturnStatus = (UINT64)(UINTN)Status;\r | |
100 | if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r | |
101 | //\r | |
102 | // X64 S3 Resume\r | |
103 | //\r | |
104 | DEBUG ((EFI_D_ERROR, "Call AsmDisablePaging64() to return to S3 Resume in PEI Phase\n"));\r | |
105 | PeiS3ResumeState->AsmTransferControl = (EFI_PHYSICAL_ADDRESS)(UINTN)AsmTransferControl32;\r | |
106 | \r | |
107 | if ((Facs != NULL) &&\r | |
108 | (Facs->Signature == EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE) &&\r | |
109 | (Facs->FirmwareWakingVector != 0) ) {\r | |
110 | //\r | |
111 | // more step needed - because relative address is handled differently between X64 and IA32.\r | |
112 | //\r | |
113 | AsmTransferControl16Address = (UINTN)AsmTransferControl16;\r | |
114 | AsmFixAddress16 = (UINT32)AsmTransferControl16Address;\r | |
115 | AsmJmpAddr32 = (UINT32)((Facs->FirmwareWakingVector & 0xF) | ((Facs->FirmwareWakingVector & 0xFFFF0) << 12));\r | |
116 | }\r | |
117 | \r | |
118 | AsmDisablePaging64 (\r | |
119 | PeiS3ResumeState->ReturnCs,\r | |
120 | (UINT32)PeiS3ResumeState->ReturnEntryPoint,\r | |
121 | (UINT32)(UINTN)AcpiS3Context,\r | |
122 | (UINT32)(UINTN)PeiS3ResumeState,\r | |
123 | (UINT32)PeiS3ResumeState->ReturnStackPointer\r | |
124 | );\r | |
125 | } else {\r | |
126 | //\r | |
127 | // IA32 S3 Resume\r | |
128 | //\r | |
129 | DEBUG ((EFI_D_ERROR, "Call SwitchStack() to return to S3 Resume in PEI Phase\n"));\r | |
130 | PeiS3ResumeState->AsmTransferControl = (EFI_PHYSICAL_ADDRESS)(UINTN)AsmTransferControl;\r | |
131 | \r | |
132 | SwitchStack (\r | |
133 | (SWITCH_STACK_ENTRY_POINT)(UINTN)PeiS3ResumeState->ReturnEntryPoint,\r | |
134 | (VOID *)(UINTN)AcpiS3Context,\r | |
135 | (VOID *)(UINTN)PeiS3ResumeState,\r | |
136 | (VOID *)(UINTN)PeiS3ResumeState->ReturnStackPointer\r | |
137 | );\r | |
138 | }\r | |
139 | \r | |
140 | //\r | |
141 | // Never run to here\r | |
142 | //\r | |
143 | CpuDeadLoop();\r | |
144 | return EFI_UNSUPPORTED;\r | |
145 | }\r | |
146 | \r | |
147 | //\r | |
148 | // S3ResumePeim does not provide a way to jump back to itself, so resume to OS here directly\r | |
149 | //\r | |
150 | if (Facs->XFirmwareWakingVector != 0) {\r | |
151 | //\r | |
152 | // Switch to native waking vector\r | |
153 | //\r | |
154 | TempStackTop = (UINTN)&TempStack + sizeof(TempStack);\r | |
155 | if ((Facs->Version == EFI_ACPI_4_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_VERSION) &&\r | |
156 | ((Facs->Flags & EFI_ACPI_4_0_64BIT_WAKE_SUPPORTED_F) != 0) &&\r | |
157 | ((Facs->Flags & EFI_ACPI_4_0_OSPM_64BIT_WAKE__F) != 0)) {\r | |
158 | //\r | |
159 | // X64 long mode waking vector\r | |
160 | //\r | |
161 | DEBUG (( EFI_D_ERROR, "Transfer to 64bit OS waking vector - %x\r\n", (UINTN)Facs->XFirmwareWakingVector));\r | |
162 | if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r | |
163 | SwitchStack (\r | |
164 | (SWITCH_STACK_ENTRY_POINT)(UINTN)Facs->XFirmwareWakingVector,\r | |
165 | NULL,\r | |
166 | NULL,\r | |
167 | (VOID *)(UINTN)TempStackTop\r | |
168 | );\r | |
169 | } else {\r | |
170 | // Unsupported for 32bit DXE, 64bit OS vector\r | |
171 | DEBUG (( EFI_D_ERROR, "Unsupported for 32bit DXE transfer to 64bit OS waking vector!\r\n"));\r | |
172 | ASSERT (FALSE);\r | |
173 | }\r | |
174 | } else {\r | |
175 | //\r | |
176 | // IA32 protected mode waking vector (Page disabled)\r | |
177 | //\r | |
178 | DEBUG (( EFI_D_ERROR, "Transfer to 32bit OS waking vector - %x\r\n", (UINTN)Facs->XFirmwareWakingVector));\r | |
179 | if (FeaturePcdGet (PcdDxeIplSwitchToLongMode)) {\r | |
180 | AsmDisablePaging64 (\r | |
181 | 0x10,\r | |
182 | (UINT32)Facs->XFirmwareWakingVector,\r | |
183 | 0,\r | |
184 | 0,\r | |
185 | (UINT32)TempStackTop\r | |
186 | );\r | |
187 | } else {\r | |
188 | SwitchStack (\r | |
189 | (SWITCH_STACK_ENTRY_POINT)(UINTN)Facs->XFirmwareWakingVector,\r | |
190 | NULL,\r | |
191 | NULL,\r | |
192 | (VOID *)(UINTN)TempStackTop\r | |
193 | );\r | |
194 | }\r | |
195 | }\r | |
196 | } else {\r | |
197 | //\r | |
198 | // 16bit Realmode waking vector\r | |
199 | //\r | |
200 | DEBUG (( EFI_D_ERROR, "Transfer to 16bit OS waking vector - %x\r\n", (UINTN)Facs->FirmwareWakingVector));\r | |
201 | AsmTransferControl (Facs->FirmwareWakingVector, 0x0);\r | |
202 | }\r | |
203 | \r | |
204 | //\r | |
205 | // Never run to here\r | |
206 | //\r | |
207 | CpuDeadLoop();\r | |
208 | return EFI_UNSUPPORTED;\r | |
209 | }\r | |
210 | \r | |
211 | /**\r | |
212 | This is the Event notification function to reload BootScriptExecutor image\r | |
213 | to RESERVED mem and save it to LockBox.\r | |
214 | \r | |
215 | @param Event Pointer to this event\r | |
216 | @param Context Event handler private data \r | |
217 | **/\r | |
218 | VOID\r | |
219 | EFIAPI\r | |
220 | ReadyToLockEventNotify (\r | |
221 | IN EFI_EVENT Event,\r | |
222 | IN VOID *Context\r | |
223 | )\r | |
224 | {\r | |
225 | EFI_STATUS Status;\r | |
226 | VOID *Interface;\r | |
227 | UINT8 *Buffer;\r | |
228 | UINTN BufferSize;\r | |
229 | EFI_HANDLE NewImageHandle;\r | |
230 | UINTN Pages;\r | |
231 | EFI_PHYSICAL_ADDRESS FfsBuffer;\r | |
232 | PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r | |
233 | \r | |
234 | Status = gBS->LocateProtocol (&gEfiDxeSmmReadyToLockProtocolGuid, NULL, &Interface);\r | |
235 | if (EFI_ERROR (Status)) {\r | |
236 | return;\r | |
237 | }\r | |
238 | \r | |
239 | //\r | |
240 | // A workaround: Here we install a dummy handle\r | |
241 | //\r | |
242 | NewImageHandle = NULL;\r | |
243 | Status = gBS->InstallProtocolInterface (\r | |
244 | &NewImageHandle,\r | |
245 | &gEfiCallerIdGuid,\r | |
246 | EFI_NATIVE_INTERFACE,\r | |
247 | NULL\r | |
248 | );\r | |
249 | ASSERT_EFI_ERROR (Status);\r | |
250 | \r | |
251 | //\r | |
252 | // Reload BootScriptExecutor image itself to RESERVED mem\r | |
253 | //\r | |
254 | Status = GetSectionFromAnyFv (\r | |
255 | &gEfiCallerIdGuid,\r | |
256 | EFI_SECTION_PE32,\r | |
257 | 0,\r | |
258 | (VOID **) &Buffer,\r | |
259 | &BufferSize\r | |
260 | );\r | |
261 | ASSERT_EFI_ERROR (Status);\r | |
262 | ImageContext.Handle = Buffer;\r | |
263 | ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;\r | |
264 | //\r | |
265 | // Get information about the image being loaded\r | |
266 | //\r | |
267 | Status = PeCoffLoaderGetImageInfo (&ImageContext);\r | |
268 | ASSERT_EFI_ERROR (Status);\r | |
269 | Pages = EFI_SIZE_TO_PAGES(BufferSize + ImageContext.SectionAlignment);\r | |
270 | FfsBuffer = 0xFFFFFFFF;\r | |
271 | Status = gBS->AllocatePages (\r | |
272 | AllocateMaxAddress,\r | |
273 | EfiReservedMemoryType,\r | |
274 | Pages,\r | |
275 | &FfsBuffer\r | |
276 | );\r | |
277 | ASSERT_EFI_ERROR (Status);\r | |
278 | ImageContext.ImageAddress = (PHYSICAL_ADDRESS)(UINTN)FfsBuffer;\r | |
279 | //\r | |
280 | // Align buffer on section boundry\r | |
281 | //\r | |
282 | ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;\r | |
283 | ImageContext.ImageAddress &= ~(ImageContext.SectionAlignment - 1);\r | |
284 | //\r | |
285 | // Load the image to our new buffer\r | |
286 | //\r | |
287 | Status = PeCoffLoaderLoadImage (&ImageContext);\r | |
288 | ASSERT_EFI_ERROR (Status);\r | |
289 | \r | |
290 | //\r | |
291 | // Relocate the image in our new buffer\r | |
292 | //\r | |
293 | Status = PeCoffLoaderRelocateImage (&ImageContext);\r | |
294 | ASSERT_EFI_ERROR (Status);\r | |
295 | \r | |
296 | //\r | |
297 | // Free the buffer allocated by ReadSection since the image has been relocated in the new buffer\r | |
298 | //\r | |
299 | gBS->FreePool (Buffer);\r | |
300 | \r | |
301 | //\r | |
302 | // Flush the instruction cache so the image data is written before we execute it\r | |
303 | //\r | |
304 | InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize);\r | |
305 | Status = ((EFI_IMAGE_ENTRY_POINT)(UINTN)(ImageContext.EntryPoint)) (NewImageHandle, gST);\r | |
306 | ASSERT_EFI_ERROR (Status);\r | |
307 | \r | |
308 | //\r | |
309 | // Additional step for BootScript integrity\r | |
310 | // Save BootScriptExecutor image\r | |
311 | //\r | |
312 | Status = SaveLockBox (\r | |
313 | &mBootScriptExecutorImageGuid,\r | |
314 | (VOID *)(UINTN)ImageContext.ImageAddress,\r | |
315 | (UINTN)ImageContext.ImageSize\r | |
316 | );\r | |
317 | ASSERT_EFI_ERROR (Status);\r | |
318 | \r | |
319 | Status = SetLockBoxAttributes (&mBootScriptExecutorImageGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);\r | |
320 | ASSERT_EFI_ERROR (Status);\r | |
321 | \r | |
322 | gBS->CloseEvent (Event);\r | |
323 | }\r | |
324 | \r | |
325 | /**\r | |
326 | Entrypoint of Boot script exector driver, this function will be executed in\r | |
327 | normal boot phase and invoked by DXE dispatch.\r | |
328 | \r | |
329 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r | |
330 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
331 | \r | |
332 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
333 | @retval other Some error occurs when executing this entry point.\r | |
334 | **/\r | |
335 | EFI_STATUS\r | |
336 | EFIAPI\r | |
337 | BootScriptExecutorEntryPoint (\r | |
338 | IN EFI_HANDLE ImageHandle,\r | |
339 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
340 | )\r | |
341 | {\r | |
342 | UINTN BufferSize;\r | |
343 | UINTN Pages;\r | |
344 | BOOT_SCRIPT_EXECUTOR_VARIABLE *EfiBootScriptExecutorVariable;\r | |
345 | EFI_PHYSICAL_ADDRESS BootScriptExecutorBuffer;\r | |
346 | EFI_STATUS Status;\r | |
347 | VOID *DevicePath;\r | |
348 | EFI_EVENT ReadyToLockEvent;\r | |
349 | VOID *Registration;\r | |
350 | UINT32 RegEax;\r | |
351 | UINT32 RegEdx;\r | |
352 | \r | |
353 | //\r | |
354 | // Test if the gEfiCallerIdGuid of this image is already installed. if not, the entry\r | |
355 | // point is loaded by DXE code which is the first time loaded. or else, it is already\r | |
356 | // be reloaded be itself.This is a work-around\r | |
357 | //\r | |
358 | Status = gBS->LocateProtocol (&gEfiCallerIdGuid, NULL, &DevicePath);\r | |
359 | if (EFI_ERROR (Status)) {\r | |
360 | //\r | |
361 | // Create ReadyToLock event to reload BootScriptExecutor image\r | |
362 | // to RESERVED mem and save it to LockBox.\r | |
363 | //\r | |
364 | ReadyToLockEvent = EfiCreateProtocolNotifyEvent (\r | |
365 | &gEfiDxeSmmReadyToLockProtocolGuid,\r | |
366 | TPL_NOTIFY,\r | |
367 | ReadyToLockEventNotify,\r | |
368 | NULL,\r | |
369 | &Registration\r | |
370 | );\r | |
371 | ASSERT (ReadyToLockEvent != NULL);\r | |
372 | } else {\r | |
373 | //\r | |
374 | // the entry point is invoked after reloading. following code only run in RESERVED mem\r | |
375 | //\r | |
376 | if (PcdGetBool(PcdUse1GPageTable)) {\r | |
377 | AsmCpuid (0x80000000, &RegEax, NULL, NULL, NULL);\r | |
378 | if (RegEax >= 0x80000001) {\r | |
379 | AsmCpuid (0x80000001, NULL, NULL, NULL, &RegEdx);\r | |
380 | if ((RegEdx & BIT26) != 0) {\r | |
381 | mPage1GSupport = TRUE;\r | |
382 | }\r | |
383 | }\r | |
384 | }\r | |
385 | \r | |
386 | BufferSize = sizeof (BOOT_SCRIPT_EXECUTOR_VARIABLE);\r | |
387 | \r | |
388 | BootScriptExecutorBuffer = 0xFFFFFFFF;\r | |
389 | Pages = EFI_SIZE_TO_PAGES(BufferSize);\r | |
390 | Status = gBS->AllocatePages (\r | |
391 | AllocateMaxAddress,\r | |
392 | EfiReservedMemoryType,\r | |
393 | Pages,\r | |
394 | &BootScriptExecutorBuffer\r | |
395 | );\r | |
396 | ASSERT_EFI_ERROR (Status);\r | |
397 | \r | |
398 | EfiBootScriptExecutorVariable = (BOOT_SCRIPT_EXECUTOR_VARIABLE *)(UINTN)BootScriptExecutorBuffer;\r | |
399 | EfiBootScriptExecutorVariable->BootScriptExecutorEntrypoint = (UINTN) S3BootScriptExecutorEntryFunction ;\r | |
400 | \r | |
401 | Status = SaveLockBox (\r | |
402 | &gEfiBootScriptExecutorVariableGuid,\r | |
403 | &BootScriptExecutorBuffer,\r | |
404 | sizeof(BootScriptExecutorBuffer)\r | |
405 | );\r | |
406 | ASSERT_EFI_ERROR (Status);\r | |
407 | \r | |
408 | //\r | |
409 | // Additional step for BootScript integrity\r | |
410 | // Save BootScriptExecutor context\r | |
411 | //\r | |
412 | Status = SaveLockBox (\r | |
413 | &gEfiBootScriptExecutorContextGuid,\r | |
414 | EfiBootScriptExecutorVariable,\r | |
415 | sizeof(*EfiBootScriptExecutorVariable)\r | |
416 | );\r | |
417 | ASSERT_EFI_ERROR (Status);\r | |
418 | \r | |
419 | Status = SetLockBoxAttributes (&gEfiBootScriptExecutorContextGuid, LOCK_BOX_ATTRIBUTE_RESTORE_IN_PLACE);\r | |
420 | ASSERT_EFI_ERROR (Status);\r | |
421 | }\r | |
422 | \r | |
423 | return EFI_SUCCESS;\r | |
424 | }\r | |
425 | \r |