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1. DebugAgentLib will install reserved vector table to persist vectors.
[mirror_edk2.git] / SourceLevelDebugPkg / Library / DebugAgent / DxeDebugAgent / DxeDebugAgentLib.c
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18b144ea 1/** @file\r
2 Debug Agent library implementition for Dxe Core and Dxr modules.\r
3\r
b422b62c 4 Copyright (c) 2010 - 2013, Intel Corporation. All rights reserved.<BR>\r
18b144ea 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 "DxeDebugAgentLib.h"\r
16\r
17DEBUG_AGENT_MAILBOX mMailbox;\r
b422b62c 18DEBUG_AGENT_MAILBOX *mMailboxPointer = NULL;\r
18b144ea 19IA32_IDT_GATE_DESCRIPTOR mIdtEntryTable[33];\r
b422b62c 20BOOLEAN mDxeCoreFlag = FALSE;\r
21BOOLEAN mMultiProcessorDebugSupport = FALSE;\r
22VOID *mSavedIdtTable = NULL;\r
23UINTN mSaveIdtTableSize = 0;\r
24BOOLEAN mDebugAgentInitialized = FALSE;\r
25BOOLEAN mSkipBreakpoint = FALSE;\r
18b144ea 26\r
27/**\r
b422b62c 28 Check if debug agent support multi-processor.\r
18b144ea 29\r
b422b62c 30 @retval TRUE Multi-processor is supported.\r
31 @retval FALSE Multi-processor is not supported.\r
32\r
33**/\r
34BOOLEAN\r
35MultiProcessorDebugSupport (\r
36 VOID\r
37 )\r
38{\r
39 return mMultiProcessorDebugSupport;\r
40}\r
18b144ea 41\r
b422b62c 42/**\r
43 Internal constructor worker function.\r
44\r
45 It will register one callback function on EFI PCD Protocol.\r
46 It will allocate the NVS memory to store Mailbox and install configuration table\r
47 in system table to store its pointer.\r
18b144ea 48\r
49**/\r
b422b62c 50VOID\r
51InternalConstructorWorker (\r
52 VOID\r
18b144ea 53 )\r
54{\r
55 EFI_STATUS Status;\r
56 EFI_PHYSICAL_ADDRESS Address;\r
b422b62c 57 BOOLEAN DebugTimerInterruptState;\r
0a488765 58 DEBUG_AGENT_MAILBOX *Mailbox;\r
59 DEBUG_AGENT_MAILBOX *NewMailbox;\r
8cc26df4
JF		 60 EFI_HOB_GUID_TYPE *GuidHob;\r
61 EFI_VECTOR_HANDOFF_INFO *VectorHandoffInfo;\r
62\r
63 //\r
64 // Check persisted vector handoff info\r
65 //\r
66 Status = EFI_SUCCESS;\r
67 GuidHob = GetFirstGuidHob (&gEfiVectorHandoffInfoPpiGuid);\r
68 if (GuidHob != NULL && !mDxeCoreFlag) {\r
69 //\r
70 // Check if configuration table is installed or not if GUIDed HOB existed,\r
71 // only when Debug Agent is not linked by DXE Core\r
72 //\r
73 Status = EfiGetSystemConfigurationTable (&gEfiVectorHandoffTableGuid, (VOID **) &VectorHandoffInfo);\r
74 }\r
75 if (GuidHob == NULL || Status != EFI_SUCCESS) {\r
76 //\r
77 // Install configuration table for persisted vector handoff info if GUIDed HOB cannot be found or\r
78 // configuration table does not exist\r
79 //\r
80 Status = gBS->InstallConfigurationTable (&gEfiVectorHandoffTableGuid, (VOID *) &mVectorHandoffInfoDebugAgent[0]);\r
81 if (EFI_ERROR (Status)) {\r
82 DEBUG ((EFI_D_ERROR, "DebugAgent: Cannot install configuration table for persisted vector handoff info!\n"));\r
83 CpuDeadLoop ();\r
84 }\r
85 }\r
93c0bdec 86\r
87 //\r
b422b62c 88 // Install EFI Serial IO protocol on debug port\r
93c0bdec 89 //\r
b422b62c 90 InstallSerialIo ();\r
93c0bdec 91\r
18b144ea 92 Address = 0;\r
93 Status = gBS->AllocatePages (\r
94 AllocateAnyPages,\r
95 EfiACPIMemoryNVS,\r
0a488765 96 EFI_SIZE_TO_PAGES (sizeof(DEBUG_AGENT_MAILBOX) + PcdGet16(PcdDebugPortHandleBufferSize)),\r
18b144ea 97 &Address\r
98 );\r
8cc26df4
JF		 99 if (EFI_ERROR (Status)) {\r
100 DEBUG ((EFI_D_ERROR, "DebugAgent: Cannot install configuration table for mailbox!\n"));\r
101 CpuDeadLoop ();\r
102 }\r
18b144ea 103\r
b422b62c 104 DebugTimerInterruptState = SaveAndSetDebugTimerInterrupt (FALSE);\r
18b144ea 105\r
0a488765 106 NewMailbox = (DEBUG_AGENT_MAILBOX *) (UINTN) Address;\r
107 //\r
108 // Copy Mailbox and Debug Port Handle buffer to new location in ACPI NVS memory, because original Mailbox\r
109 // and Debug Port Handle buffer may be free at runtime, SMM debug agent needs to access them\r
110 //\r
111 Mailbox = GetMailboxPointer ();\r
112 CopyMem (NewMailbox, Mailbox, sizeof (DEBUG_AGENT_MAILBOX));\r
113 CopyMem (NewMailbox + 1, (VOID *)(UINTN)Mailbox->DebugPortHandle, PcdGet16(PcdDebugPortHandleBufferSize));\r
114 //\r
115 // Update Debug Port Handle in new Mailbox\r
116 //\r
117 UpdateMailboxContent (NewMailbox, DEBUG_MAILBOX_DEBUG_PORT_HANDLE_INDEX, (UINT64)(UINTN)(NewMailbox + 1));\r
118 mMailboxPointer = NewMailbox;\r
119\r
120 DebugTimerInterruptState = SaveAndSetDebugTimerInterrupt (DebugTimerInterruptState);\r
18b144ea 121\r
93c0bdec 122 Status = gBS->InstallConfigurationTable (&gEfiDebugAgentGuid, (VOID *) mMailboxPointer);\r
8cc26df4
JF		 123 if (EFI_ERROR (Status)) {\r
124 DEBUG ((EFI_D_ERROR, "DebugAgent: Failed to install configuration for mailbox!\n"));\r
125 CpuDeadLoop ();\r
126 }\r
b422b62c 127}\r
128\r
129/**\r
130 Debug Agent constructor function.\r
131\r
132 @param[in] ImageHandle The firmware allocated handle for the EFI image.\r
133 @param[in] SystemTable A pointer to the EFI System Table.\r
134\r
135 @retval RETURN_SUCCESS When this function completed.\r
136\r
137**/\r
138RETURN_STATUS\r
139EFIAPI\r
140DxeDebugAgentLibConstructor (\r
141 IN EFI_HANDLE ImageHandle,\r
142 IN EFI_SYSTEM_TABLE *SystemTable\r
143 )\r
144{\r
145 if (mDxeCoreFlag) {\r
146 //\r
147 // Invoke internal constructor function only when DXE core links this library instance\r
148 //\r
149 InternalConstructorWorker ();\r
150 }\r
151\r
152 return RETURN_SUCCESS;\r
153}\r
154\r
155/**\r
156 Get the pointer to Mailbox from the configuration table.\r
157\r
158 @return Pointer to Mailbox.\r
159\r
160**/\r
161DEBUG_AGENT_MAILBOX *\r
162GetMailboxFromConfigurationTable (\r
163 VOID\r
164 )\r
165{\r
166 EFI_STATUS Status;\r
167 DEBUG_AGENT_MAILBOX *Mailbox;\r
93c0bdec 168 \r
b422b62c 169 Status = EfiGetSystemConfigurationTable (&gEfiDebugAgentGuid, (VOID **) &Mailbox);\r
170 if (Status == EFI_SUCCESS && Mailbox != NULL) {\r
171 VerifyMailboxChecksum (Mailbox);\r
172 return Mailbox;\r
173 } else {\r
174 return NULL;\r
175 }\r
18b144ea 176}\r
177\r
178/**\r
179 Get the pointer to Mailbox from the GUIDed HOB.\r
180\r
181 @param[in] HobStart The starting HOB pointer to search from.\r
182\r
183 @return Pointer to Mailbox.\r
184\r
185**/\r
186DEBUG_AGENT_MAILBOX *\r
187GetMailboxFromHob (\r
188 IN VOID *HobStart\r
189 )\r
190{\r
191 EFI_HOB_GUID_TYPE *GuidHob;\r
b422b62c 192 UINT64 *MailboxLocation;\r
193 DEBUG_AGENT_MAILBOX *Mailbox;\r
18b144ea 194\r
195 GuidHob = GetNextGuidHob (&gEfiDebugAgentGuid, HobStart);\r
196 if (GuidHob == NULL) {\r
197 return NULL;\r
198 }\r
b422b62c 199 MailboxLocation = (UINT64 *) (GET_GUID_HOB_DATA(GuidHob));\r
200 Mailbox = (DEBUG_AGENT_MAILBOX *)(UINTN)(*MailboxLocation);\r
201 VerifyMailboxChecksum (Mailbox);\r
18b144ea 202\r
b422b62c 203 return Mailbox;\r
18b144ea 204}\r
205\r
206/**\r
207 Get Debug Agent Mailbox pointer.\r
208\r
209 @return Mailbox pointer.\r
210\r
211**/\r
212DEBUG_AGENT_MAILBOX *\r
213GetMailboxPointer (\r
214 VOID\r
215 )\r
216{\r
b422b62c 217 AcquireMpSpinLock (&mDebugMpContext.MailboxSpinLock);\r
218 VerifyMailboxChecksum (mMailboxPointer);\r
219 ReleaseMpSpinLock (&mDebugMpContext.MailboxSpinLock);\r
18b144ea 220 return mMailboxPointer;\r
221}\r
222\r
223/**\r
224 Get debug port handle.\r
225\r
226 @return Debug port handle.\r
227\r
228**/\r
229DEBUG_PORT_HANDLE\r
230GetDebugPortHandle (\r
231 VOID\r
232 )\r
233{\r
b422b62c 234 return (DEBUG_PORT_HANDLE) (UINTN)(GetMailboxPointer ()->DebugPortHandle);\r
235}\r
236\r
237/**\r
238 Worker function to setup IDT table and initialize the IDT entries.\r
239\r
240 @param[in] Mailbox Pointer to Mailbox.\r
241\r
242**/\r
243VOID\r
244SetupDebugAgentEnviroment (\r
245 IN DEBUG_AGENT_MAILBOX *Mailbox\r
246 )\r
247{\r
248 IA32_DESCRIPTOR Idtr;\r
249 UINT16 IdtEntryCount;\r
250 UINT64 DebugPortHandle;\r
251\r
252 if (mMultiProcessorDebugSupport) {\r
253 InitializeSpinLock (&mDebugMpContext.MpContextSpinLock);\r
254 InitializeSpinLock (&mDebugMpContext.DebugPortSpinLock);\r
255 InitializeSpinLock (&mDebugMpContext.MailboxSpinLock);\r
256 //\r
257 // Clear Break CPU index value\r
258 //\r
259 mDebugMpContext.BreakAtCpuIndex = (UINT32) -1;\r
260 }\r
261\r
262 //\r
263 // Get original IDT address and size.\r
264 //\r
265 AsmReadIdtr ((IA32_DESCRIPTOR *) &Idtr);\r
266 IdtEntryCount = (UINT16) ((Idtr.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR));\r
267 if (IdtEntryCount < 33) {\r
8cc26df4
JF		 268 ZeroMem (&mIdtEntryTable, sizeof (IA32_IDT_GATE_DESCRIPTOR) * 33);\r
269 //\r
270 // Copy original IDT table into new one\r
271 //\r
272 CopyMem (&mIdtEntryTable, (VOID *) Idtr.Base, Idtr.Limit + 1);\r
273 //\r
274 // Load new IDT table\r
275 //\r
b422b62c 276 Idtr.Limit = (UINT16) (sizeof (IA32_IDT_GATE_DESCRIPTOR) * 33 - 1);\r
277 Idtr.Base = (UINTN) &mIdtEntryTable;\r
b422b62c 278 AsmWriteIdtr ((IA32_DESCRIPTOR *) &Idtr);\r
279 }\r
280\r
281 //\r
282 // Initialize the IDT table entries to support source level debug.\r
283 //\r
284 InitializeDebugIdt ();\r
285\r
286 if (Mailbox != NULL) {\r
287 //\r
288 // If Mailbox exists, copy it into one global variable,\r
289 //\r
290 CopyMem (&mMailbox, Mailbox, sizeof (DEBUG_AGENT_MAILBOX));\r
291 } else {\r
292 ZeroMem (&mMailbox, sizeof (DEBUG_AGENT_MAILBOX));\r
293 } \r
294\r
295 mMailboxPointer = &mMailbox;\r
296 //\r
297 // Initialize debug communication port\r
298 //\r
299 DebugPortHandle = (UINT64) (UINTN)DebugPortInitialize ((VOID *)(UINTN)mMailboxPointer->DebugPortHandle, NULL);\r
300 UpdateMailboxContent (mMailboxPointer, DEBUG_MAILBOX_DEBUG_PORT_HANDLE_INDEX, DebugPortHandle);\r
301\r
302 if (Mailbox == NULL) {\r
303 //\r
304 // Trigger one software interrupt to inform HOST\r
305 //\r
306 TriggerSoftInterrupt (SYSTEM_RESET_SIGNATURE);\r
307 SetDebugFlag (DEBUG_AGENT_FLAG_MEMORY_READY, 1);\r
308 //\r
309 // Memory has been ready\r
310 //\r
311 if (IsHostAttached ()) {\r
312 //\r
313 // Trigger one software interrupt to inform HOST\r
314 //\r
315 TriggerSoftInterrupt (MEMORY_READY_SIGNATURE);\r
316 }\r
317 }\r
18b144ea 318}\r
319\r
b422b62c 320\r
18b144ea 321/**\r
322 Initialize debug agent.\r
323\r
324 This function is used to set up debug enviroment for DXE phase.\r
325\r
326 If this function is called by DXE Core, Context must be the pointer\r
327 to HOB list which will be used to get GUIDed HOB. It will enable\r
328 interrupt to support break-in feature.\r
329 If this function is called by DXE module, Context must be NULL. It\r
330 will enable interrupt to support break-in feature.\r
331\r
332 @param[in] InitFlag Init flag is used to decide initialize process.\r
333 @param[in] Context Context needed according to InitFlag.\r
334 @param[in] Function Continue function called by debug agent library; it was\r
335 optional.\r
336\r
337**/\r
338VOID\r
339EFIAPI\r
340InitializeDebugAgent (\r
341 IN UINT32 InitFlag,\r
342 IN VOID *Context, OPTIONAL\r
343 IN DEBUG_AGENT_CONTINUE Function OPTIONAL\r
344 )\r
345{\r
b422b62c 346 UINT64 *MailboxLocation;\r
18b144ea 347 DEBUG_AGENT_MAILBOX *Mailbox;\r
18b144ea 348 BOOLEAN InterruptStatus;\r
b422b62c 349 VOID *HobList;\r
350 IA32_DESCRIPTOR IdtDescriptor;\r
351 IA32_DESCRIPTOR *Ia32Idtr;\r
352 IA32_IDT_ENTRY *Ia32IdtEntry;\r
18b144ea 353\r
b422b62c 354 if (InitFlag == DEBUG_AGENT_INIT_DXE_AP) {\r
355 //\r
356 // Invoked by AP, enable interrupt to let AP could receive IPI from other processors\r
357 //\r
358 EnableInterrupts ();\r
359 return ;\r
18b144ea 360 }\r
361\r
b422b62c 362 // \r
363 // Disable Debug Timer interrupt\r
364 //\r
365 SaveAndSetDebugTimerInterrupt (FALSE);\r
18b144ea 366 //\r
367 // Save and disable original interrupt status\r
368 //\r
369 InterruptStatus = SaveAndDisableInterrupts ();\r
370\r
b422b62c 371 //\r
372 // Try to get mailbox firstly\r
373 //\r
374 HobList = NULL;\r
375 Mailbox = NULL;\r
376 MailboxLocation = NULL;\r
377\r
378 switch (InitFlag) {\r
379\r
380 case DEBUG_AGENT_INIT_DXE_LOAD:\r
18b144ea 381 //\r
b422b62c 382 // Check if Debug Agent has been initialized before\r
18b144ea 383 //\r
b422b62c 384 if (IsDebugAgentInitialzed ()) {\r
385 DEBUG ((EFI_D_INFO, "Debug Agent: The former agent will be overwritten by the new one!\n"));\r
386 }\r
387\r
388 mMultiProcessorDebugSupport = TRUE;\r
93c0bdec 389 //\r
b422b62c 390 // Save original IDT table\r
391 //\r
392 AsmReadIdtr (&IdtDescriptor);\r
393 mSaveIdtTableSize = IdtDescriptor.Limit + 1;\r
394 mSavedIdtTable = AllocateCopyPool (mSaveIdtTableSize, (VOID *) IdtDescriptor.Base);\r
395 //\r
396 // Initialize Debug Timer hardware\r
397 //\r
398 InitializeDebugTimer ();\r
399 //\r
400 // Check if Debug Agent initialized in DXE phase\r
401 //\r
402 Mailbox = GetMailboxFromConfigurationTable ();\r
403 if (Mailbox == NULL) {\r
404 //\r
405 // Try to get mailbox from GUIDed HOB build in PEI \r
406 //\r
407 HobList = GetHobList ();\r
408 Mailbox = GetMailboxFromHob (HobList);\r
409 }\r
410 //\r
411 // Set up IDT table and prepare for IDT entries\r
412 //\r
413 SetupDebugAgentEnviroment (Mailbox);\r
414 //\r
415 // For DEBUG_AGENT_INIT_S3, needn't to install configuration table and EFI Serial IO protocol\r
416 // For DEBUG_AGENT_INIT_DXE_CORE, InternalConstructorWorker() will invoked in Constructor()\r
417 //\r
418 InternalConstructorWorker ();\r
419 //\r
420 // Enable interrupt to receive Debug Timer interrupt\r
93c0bdec 421 //\r
18b144ea 422 EnableInterrupts ();\r
423\r
b422b62c 424 mDebugAgentInitialized = TRUE;\r
425 FindAndReportModuleImageInfo (SIZE_4KB);\r
426\r
427 *(EFI_STATUS *)Context = EFI_SUCCESS;\r
428\r
429 if (gST->ConOut != NULL) {\r
430 Print (L"Debug Agent: Initialized successfully!\r\n");\r
431 Print (L"If the Debug Port is serial port, please make sure this serial port isn't connected by ISA Serial driver\r\n");\r
432 Print (L"You could do the following steps to disconnect the serial port:\r\n");\r
433 Print (L"1: Shell> drivers\r\n");\r
434 Print (L" ...\r\n");\r
435 Print (L" V VERSION E G G #D #C DRIVER NAME IMAGE NAME\r\n");\r
436 Print (L" == ======== = = = == == =================================== ===================\r\n");\r
437 Print (L" 8F 0000000A B - - 1 14 PCI Bus Driver PciBusDxe\r\n");\r
438 Print (L" 91 00000010 ? - - - - ATA Bus Driver AtaBusDxe\r\n");\r
439 Print (L" ...\r\n");\r
440 Print (L" A7 0000000A B - - 1 1 ISA Serial Driver IsaSerialDxe\r\n");\r
441 Print (L" ...\r\n");\r
442 Print (L"2: Shell> dh -d A7\r\n");\r
443 Print (L" A7: Image(IsaSerialDxe) ImageDevPath (..9FB3-11D4-9A3A-0090273FC14D))DriverBinding ComponentName ComponentName2\r\n");\r
444 Print (L" Driver Name : ISA Serial Driver\r\n");\r
445 Print (L" Image Name : FvFile(93B80003-9FB3-11D4-9A3A-0090273FC14D)\r\n");\r
446 Print (L" Driver Version : 0000000A\r\n");\r
447 Print (L" Driver Type : BUS\r\n");\r
448 Print (L" Configuration : NO\r\n");\r
449 Print (L" Diagnostics : NO\r\n");\r
450 Print (L" Managing :\r\n");\r
451 Print (L" Ctrl[EA] : PciRoot(0x0)/Pci(0x1F,0x0)/Serial(0x0)\r\n");\r
452 Print (L" Child[EB] : PciRoot(0x0)/Pci(0x1F,0x0)/Serial(0x0)/Uart(115200,8,N,1)\r\n");\r
453 Print (L"3: Shell> disconnect EA\r\n");\r
454 Print (L"4: Shell> load -nc DebugAgentDxe.efi\r\n\r\n");\r
455 }\r
456 break;\r
457\r
458 case DEBUG_AGENT_INIT_DXE_UNLOAD:\r
459 if (mDebugAgentInitialized) {\r
460 if (IsHostAttached ()) {\r
461 Print (L"Debug Agent: Host is still connected, please de-attach TARGET firstly!\r\n");\r
462 *(EFI_STATUS *)Context = EFI_ACCESS_DENIED;\r
463 // \r
464 // Enable Debug Timer interrupt again\r
465 //\r
466 SaveAndSetDebugTimerInterrupt (TRUE);\r
467 } else {\r
468 //\r
469 // Restore original IDT table\r
470 //\r
471 AsmReadIdtr (&IdtDescriptor);\r
472 IdtDescriptor.Limit = (UINT16) (mSaveIdtTableSize - 1);\r
473 CopyMem ((VOID *) IdtDescriptor.Base, mSavedIdtTable, mSaveIdtTableSize);\r
474 AsmWriteIdtr (&IdtDescriptor);\r
475 FreePool (mSavedIdtTable);\r
476 mDebugAgentInitialized = FALSE;\r
477 *(EFI_STATUS *)Context = EFI_SUCCESS;\r
478 }\r
479 } else {\r
480 Print (L"Debug Agent: It hasn't been initialized, cannot unload it!\r\n");\r
481 *(EFI_STATUS *)Context = EFI_NOT_STARTED;\r
482 }\r
18b144ea 483\r
18b144ea 484 //\r
b422b62c 485 // Restore interrupt state.\r
18b144ea 486 //\r
b422b62c 487 SetInterruptState (InterruptStatus);\r
488 break;\r
18b144ea 489\r
b422b62c 490 case DEBUG_AGENT_INIT_DXE_CORE:\r
491 mDxeCoreFlag = TRUE;\r
492 mMultiProcessorDebugSupport = TRUE;\r
18b144ea 493 //\r
b422b62c 494 // Initialize Debug Timer hardware\r
18b144ea 495 //\r
b422b62c 496 InitializeDebugTimer ();\r
18b144ea 497 //\r
b422b62c 498 // Try to get mailbox from GUIDed HOB build in PEI \r
18b144ea 499 //\r
b422b62c 500 HobList = Context;\r
501 Mailbox = GetMailboxFromHob (HobList);\r
502 //\r
503 // Set up IDT table and prepare for IDT entries\r
504 //\r
505 SetupDebugAgentEnviroment (Mailbox);\r
506 //\r
507 // Enable interrupt to receive Debug Timer interrupt\r
508 //\r
509 EnableInterrupts ();\r
18b144ea 510\r
b422b62c 511 break;\r
18b144ea 512\r
b422b62c 513 case DEBUG_AGENT_INIT_S3:\r
18b144ea 514\r
b422b62c 515 if (Context != NULL) {\r
516 Ia32Idtr = (IA32_DESCRIPTOR *) Context;\r
517 Ia32IdtEntry = (IA32_IDT_ENTRY *)(Ia32Idtr->Base);\r
518 MailboxLocation = (UINT64 *) (UINTN) (Ia32IdtEntry[DEBUG_MAILBOX_VECTOR].Bits.OffsetLow + \r
519 (Ia32IdtEntry[DEBUG_MAILBOX_VECTOR].Bits.OffsetHigh << 16));\r
520 Mailbox = (DEBUG_AGENT_MAILBOX *)(UINTN)(*MailboxLocation);\r
521 VerifyMailboxChecksum (Mailbox);\r
522 }\r
18b144ea 523 //\r
b422b62c 524 // Set up IDT table and prepare for IDT entries\r
18b144ea 525 //\r
b422b62c 526 SetupDebugAgentEnviroment (Mailbox);\r
18b144ea 527 //\r
b422b62c 528 // Disable interrupt\r
18b144ea 529 //\r
b422b62c 530 DisableInterrupts ();\r
531 FindAndReportModuleImageInfo (SIZE_4KB);\r
532 if (GetDebugFlag (DEBUG_AGENT_FLAG_BREAK_BOOT_SCRIPT) == 1) {\r
533 //\r
534 // If Boot Script entry break is set, code will be break at here.\r
535 //\r
536 CpuBreakpoint ();\r
537 }\r
538 break;\r
539\r
540 default:\r
18b144ea 541 //\r
b422b62c 542 // Only DEBUG_AGENT_INIT_PREMEM_SEC and DEBUG_AGENT_INIT_POSTMEM_SEC are allowed for this \r
543 // Debug Agent library instance.\r
18b144ea 544 //\r
b422b62c 545 DEBUG ((EFI_D_ERROR, "Debug Agent: The InitFlag value is not allowed!\n"));\r
546 CpuDeadLoop ();\r
547 break;\r
18b144ea 548 }\r
18b144ea 549}\r
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