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18b144ea | 1 | /** @file\r |
2 | Debug Agent library implementition for Dxe Core and Dxr modules.\r | |
3 | \r | |
08021523 | 4 | Copyright (c) 2010 - 2015, 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 | |
17 | DEBUG_AGENT_MAILBOX mMailbox;\r | |
b422b62c | 18 | DEBUG_AGENT_MAILBOX *mMailboxPointer = NULL;\r |
18b144ea | 19 | IA32_IDT_GATE_DESCRIPTOR mIdtEntryTable[33];\r |
b422b62c | 20 | BOOLEAN mDxeCoreFlag = FALSE;\r |
21 | BOOLEAN mMultiProcessorDebugSupport = FALSE;\r | |
22 | VOID *mSavedIdtTable = NULL;\r | |
23 | UINTN mSaveIdtTableSize = 0;\r | |
24 | BOOLEAN mDebugAgentInitialized = FALSE;\r | |
25 | BOOLEAN 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 | |
34 | BOOLEAN\r | |
35 | MultiProcessorDebugSupport (\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 | 50 | VOID\r |
51 | InternalConstructorWorker (\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 | |
138 | RETURN_STATUS\r | |
139 | EFIAPI\r | |
140 | DxeDebugAgentLibConstructor (\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 | |
161 | DEBUG_AGENT_MAILBOX *\r | |
162 | GetMailboxFromConfigurationTable (\r | |
163 | VOID\r | |
164 | )\r | |
165 | {\r | |
166 | EFI_STATUS Status;\r | |
167 | DEBUG_AGENT_MAILBOX *Mailbox;\r | |
4fe43eb3 | 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 | |
186 | DEBUG_AGENT_MAILBOX *\r | |
187 | GetMailboxFromHob (\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 | |
212 | DEBUG_AGENT_MAILBOX *\r | |
213 | GetMailboxPointer (\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 | |
229 | DEBUG_PORT_HANDLE\r | |
230 | GetDebugPortHandle (\r | |
231 | VOID\r | |
232 | )\r | |
233 | {\r | |
b422b62c | 234 | return (DEBUG_PORT_HANDLE) (UINTN)(GetMailboxPointer ()->DebugPortHandle);\r |
235 | }\r | |
236 | \r | |
237 | /**\r | |
adcc2727 JF |
238 | Worker function to set up Debug Agent environment.\r |
239 | \r | |
240 | This function will set up IDT table and initialize the IDT entries and \r | |
241 | initialize CPU LOCAL APIC timer.\r | |
242 | It also tries to connect HOST if Debug Agent was not initialized before.\r | |
b422b62c | 243 | \r |
244 | @param[in] Mailbox Pointer to Mailbox.\r | |
245 | \r | |
246 | **/\r | |
247 | VOID\r | |
adcc2727 | 248 | SetupDebugAgentEnvironment (\r |
b422b62c | 249 | IN DEBUG_AGENT_MAILBOX *Mailbox\r |
250 | )\r | |
251 | {\r | |
252 | IA32_DESCRIPTOR Idtr;\r | |
253 | UINT16 IdtEntryCount;\r | |
254 | UINT64 DebugPortHandle;\r | |
adcc2727 | 255 | UINT32 DebugTimerFrequency;\r |
b422b62c | 256 | \r |
257 | if (mMultiProcessorDebugSupport) {\r | |
258 | InitializeSpinLock (&mDebugMpContext.MpContextSpinLock);\r | |
259 | InitializeSpinLock (&mDebugMpContext.DebugPortSpinLock);\r | |
260 | InitializeSpinLock (&mDebugMpContext.MailboxSpinLock);\r | |
261 | //\r | |
262 | // Clear Break CPU index value\r | |
263 | //\r | |
264 | mDebugMpContext.BreakAtCpuIndex = (UINT32) -1;\r | |
265 | }\r | |
266 | \r | |
267 | //\r | |
268 | // Get original IDT address and size.\r | |
269 | //\r | |
270 | AsmReadIdtr ((IA32_DESCRIPTOR *) &Idtr);\r | |
271 | IdtEntryCount = (UINT16) ((Idtr.Limit + 1) / sizeof (IA32_IDT_GATE_DESCRIPTOR));\r | |
272 | if (IdtEntryCount < 33) {\r | |
8cc26df4 JF |
273 | ZeroMem (&mIdtEntryTable, sizeof (IA32_IDT_GATE_DESCRIPTOR) * 33);\r |
274 | //\r | |
275 | // Copy original IDT table into new one\r | |
276 | //\r | |
277 | CopyMem (&mIdtEntryTable, (VOID *) Idtr.Base, Idtr.Limit + 1);\r | |
278 | //\r | |
279 | // Load new IDT table\r | |
280 | //\r | |
b422b62c | 281 | Idtr.Limit = (UINT16) (sizeof (IA32_IDT_GATE_DESCRIPTOR) * 33 - 1);\r |
282 | Idtr.Base = (UINTN) &mIdtEntryTable;\r | |
b422b62c | 283 | AsmWriteIdtr ((IA32_DESCRIPTOR *) &Idtr);\r |
284 | }\r | |
285 | \r | |
286 | //\r | |
287 | // Initialize the IDT table entries to support source level debug.\r | |
288 | //\r | |
289 | InitializeDebugIdt ();\r | |
290 | \r | |
3bf04a71 JF |
291 | //\r |
292 | // If mMailboxPointer is not set before, set it\r | |
293 | //\r | |
294 | if (mMailboxPointer == NULL) {\r | |
295 | if (Mailbox != NULL) {\r | |
296 | //\r | |
297 | // If Mailbox exists, copy it into one global variable\r | |
298 | //\r | |
299 | CopyMem (&mMailbox, Mailbox, sizeof (DEBUG_AGENT_MAILBOX));\r | |
300 | } else {\r | |
301 | ZeroMem (&mMailbox, sizeof (DEBUG_AGENT_MAILBOX));\r | |
302 | }\r | |
303 | mMailboxPointer = &mMailbox;\r | |
304 | }\r | |
b422b62c | 305 | \r |
adcc2727 JF |
306 | //\r |
307 | // Initialize Debug Timer hardware and save its initial count and frequency\r | |
308 | //\r | |
86d13652 | 309 | mDebugMpContext.DebugTimerInitCount = InitializeDebugTimer (&DebugTimerFrequency, TRUE);\r |
adcc2727 | 310 | UpdateMailboxContent (mMailboxPointer, DEBUG_MAILBOX_DEBUG_TIMER_FREQUENCY, DebugTimerFrequency);\r |
b422b62c | 311 | //\r |
312 | // Initialize debug communication port\r | |
313 | //\r | |
314 | DebugPortHandle = (UINT64) (UINTN)DebugPortInitialize ((VOID *)(UINTN)mMailboxPointer->DebugPortHandle, NULL);\r | |
315 | UpdateMailboxContent (mMailboxPointer, DEBUG_MAILBOX_DEBUG_PORT_HANDLE_INDEX, DebugPortHandle);\r | |
316 | \r | |
317 | if (Mailbox == NULL) {\r | |
318 | //\r | |
319 | // Trigger one software interrupt to inform HOST\r | |
320 | //\r | |
321 | TriggerSoftInterrupt (SYSTEM_RESET_SIGNATURE);\r | |
322 | SetDebugFlag (DEBUG_AGENT_FLAG_MEMORY_READY, 1);\r | |
323 | //\r | |
324 | // Memory has been ready\r | |
325 | //\r | |
326 | if (IsHostAttached ()) {\r | |
327 | //\r | |
328 | // Trigger one software interrupt to inform HOST\r | |
329 | //\r | |
330 | TriggerSoftInterrupt (MEMORY_READY_SIGNATURE);\r | |
331 | }\r | |
332 | }\r | |
18b144ea | 333 | }\r |
334 | \r | |
b422b62c | 335 | \r |
18b144ea | 336 | /**\r |
337 | Initialize debug agent.\r | |
338 | \r | |
adcc2727 | 339 | This function is used to set up debug environment for DXE phase.\r |
18b144ea | 340 | \r |
341 | If this function is called by DXE Core, Context must be the pointer\r | |
342 | to HOB list which will be used to get GUIDed HOB. It will enable\r | |
343 | interrupt to support break-in feature.\r | |
344 | If this function is called by DXE module, Context must be NULL. It\r | |
345 | will enable interrupt to support break-in feature.\r | |
346 | \r | |
347 | @param[in] InitFlag Init flag is used to decide initialize process.\r | |
348 | @param[in] Context Context needed according to InitFlag.\r | |
349 | @param[in] Function Continue function called by debug agent library; it was\r | |
350 | optional.\r | |
351 | \r | |
352 | **/\r | |
353 | VOID\r | |
354 | EFIAPI\r | |
355 | InitializeDebugAgent (\r | |
356 | IN UINT32 InitFlag,\r | |
357 | IN VOID *Context, OPTIONAL\r | |
358 | IN DEBUG_AGENT_CONTINUE Function OPTIONAL\r | |
359 | )\r | |
360 | {\r | |
b422b62c | 361 | UINT64 *MailboxLocation;\r |
18b144ea | 362 | DEBUG_AGENT_MAILBOX *Mailbox;\r |
18b144ea | 363 | BOOLEAN InterruptStatus;\r |
b422b62c | 364 | VOID *HobList;\r |
365 | IA32_DESCRIPTOR IdtDescriptor;\r | |
366 | IA32_DESCRIPTOR *Ia32Idtr;\r | |
367 | IA32_IDT_ENTRY *Ia32IdtEntry;\r | |
e2c8d3cf JF |
368 | BOOLEAN PeriodicMode;\r |
369 | UINTN TimerCycle;\r | |
18b144ea | 370 | \r |
b422b62c | 371 | if (InitFlag == DEBUG_AGENT_INIT_DXE_AP) {\r |
e2c8d3cf JF |
372 | //\r |
373 | // Check if CPU APIC Timer is working, otherwise initialize it.\r | |
374 | //\r | |
df60fb4c | 375 | InitializeLocalApicSoftwareEnable (TRUE);\r |
e2c8d3cf JF |
376 | GetApicTimerState (NULL, &PeriodicMode, NULL);\r |
377 | TimerCycle = GetApicTimerInitCount ();\r | |
378 | if (!PeriodicMode || TimerCycle == 0) {\r | |
379 | InitializeDebugTimer (NULL, FALSE);\r | |
380 | }\r | |
b422b62c | 381 | //\r |
382 | // Invoked by AP, enable interrupt to let AP could receive IPI from other processors\r | |
383 | //\r | |
384 | EnableInterrupts ();\r | |
385 | return ;\r | |
18b144ea | 386 | }\r |
387 | \r | |
4fe43eb3 | 388 | //\r |
b422b62c | 389 | // Disable Debug Timer interrupt\r |
390 | //\r | |
391 | SaveAndSetDebugTimerInterrupt (FALSE);\r | |
18b144ea | 392 | //\r |
393 | // Save and disable original interrupt status\r | |
394 | //\r | |
395 | InterruptStatus = SaveAndDisableInterrupts ();\r | |
396 | \r | |
b422b62c | 397 | //\r |
398 | // Try to get mailbox firstly\r | |
399 | //\r | |
400 | HobList = NULL;\r | |
401 | Mailbox = NULL;\r | |
402 | MailboxLocation = NULL;\r | |
403 | \r | |
404 | switch (InitFlag) {\r | |
405 | \r | |
406 | case DEBUG_AGENT_INIT_DXE_LOAD:\r | |
18b144ea | 407 | //\r |
b422b62c | 408 | // Check if Debug Agent has been initialized before\r |
18b144ea | 409 | //\r |
b422b62c | 410 | if (IsDebugAgentInitialzed ()) {\r |
411 | DEBUG ((EFI_D_INFO, "Debug Agent: The former agent will be overwritten by the new one!\n"));\r | |
412 | }\r | |
413 | \r | |
414 | mMultiProcessorDebugSupport = TRUE;\r | |
93c0bdec | 415 | //\r |
b422b62c | 416 | // Save original IDT table\r |
417 | //\r | |
418 | AsmReadIdtr (&IdtDescriptor);\r | |
419 | mSaveIdtTableSize = IdtDescriptor.Limit + 1;\r | |
420 | mSavedIdtTable = AllocateCopyPool (mSaveIdtTableSize, (VOID *) IdtDescriptor.Base);\r | |
421 | //\r | |
b422b62c | 422 | // Check if Debug Agent initialized in DXE phase\r |
423 | //\r | |
424 | Mailbox = GetMailboxFromConfigurationTable ();\r | |
425 | if (Mailbox == NULL) {\r | |
426 | //\r | |
4fe43eb3 | 427 | // Try to get mailbox from GUIDed HOB build in PEI\r |
b422b62c | 428 | //\r |
429 | HobList = GetHobList ();\r | |
430 | Mailbox = GetMailboxFromHob (HobList);\r | |
431 | }\r | |
432 | //\r | |
adcc2727 | 433 | // Set up Debug Agent Environment and try to connect HOST if required\r |
b422b62c | 434 | //\r |
adcc2727 | 435 | SetupDebugAgentEnvironment (Mailbox);\r |
08021523 | 436 | //\r |
b422b62c | 437 | // For DEBUG_AGENT_INIT_S3, needn't to install configuration table and EFI Serial IO protocol\r |
438 | // For DEBUG_AGENT_INIT_DXE_CORE, InternalConstructorWorker() will invoked in Constructor()\r | |
439 | //\r | |
440 | InternalConstructorWorker ();\r | |
441 | //\r | |
2befbc82 JF |
442 | // Enable Debug Timer interrupt\r |
443 | //\r | |
444 | SaveAndSetDebugTimerInterrupt (TRUE);\r | |
445 | //\r | |
b422b62c | 446 | // Enable interrupt to receive Debug Timer interrupt\r |
93c0bdec | 447 | //\r |
18b144ea | 448 | EnableInterrupts ();\r |
449 | \r | |
b422b62c | 450 | mDebugAgentInitialized = TRUE;\r |
451 | FindAndReportModuleImageInfo (SIZE_4KB);\r | |
452 | \r | |
453 | *(EFI_STATUS *)Context = EFI_SUCCESS;\r | |
454 | \r | |
b422b62c | 455 | break;\r |
456 | \r | |
457 | case DEBUG_AGENT_INIT_DXE_UNLOAD:\r | |
458 | if (mDebugAgentInitialized) {\r | |
459 | if (IsHostAttached ()) {\r | |
b422b62c | 460 | *(EFI_STATUS *)Context = EFI_ACCESS_DENIED;\r |
4fe43eb3 | 461 | //\r |
b422b62c | 462 | // Enable Debug Timer interrupt again\r |
463 | //\r | |
464 | SaveAndSetDebugTimerInterrupt (TRUE);\r | |
465 | } else {\r | |
466 | //\r | |
467 | // Restore original IDT table\r | |
468 | //\r | |
469 | AsmReadIdtr (&IdtDescriptor);\r | |
470 | IdtDescriptor.Limit = (UINT16) (mSaveIdtTableSize - 1);\r | |
471 | CopyMem ((VOID *) IdtDescriptor.Base, mSavedIdtTable, mSaveIdtTableSize);\r | |
472 | AsmWriteIdtr (&IdtDescriptor);\r | |
473 | FreePool (mSavedIdtTable);\r | |
474 | mDebugAgentInitialized = FALSE;\r | |
475 | *(EFI_STATUS *)Context = EFI_SUCCESS;\r | |
476 | }\r | |
477 | } else {\r | |
b422b62c | 478 | *(EFI_STATUS *)Context = EFI_NOT_STARTED;\r |
479 | }\r | |
18b144ea | 480 | \r |
18b144ea | 481 | //\r |
b422b62c | 482 | // Restore interrupt state.\r |
18b144ea | 483 | //\r |
b422b62c | 484 | SetInterruptState (InterruptStatus);\r |
485 | break;\r | |
18b144ea | 486 | \r |
b422b62c | 487 | case DEBUG_AGENT_INIT_DXE_CORE:\r |
488 | mDxeCoreFlag = TRUE;\r | |
489 | mMultiProcessorDebugSupport = TRUE;\r | |
18b144ea | 490 | //\r |
4fe43eb3 | 491 | // Try to get mailbox from GUIDed HOB build in PEI\r |
18b144ea | 492 | //\r |
b422b62c | 493 | HobList = Context;\r |
494 | Mailbox = GetMailboxFromHob (HobList);\r | |
495 | //\r | |
adcc2727 | 496 | // Set up Debug Agent Environment and try to connect HOST if required\r |
08021523 | 497 | //\r |
adcc2727 | 498 | SetupDebugAgentEnvironment (Mailbox);\r |
08021523 | 499 | //\r |
2befbc82 JF |
500 | // Enable Debug Timer interrupt\r |
501 | //\r | |
502 | SaveAndSetDebugTimerInterrupt (TRUE);\r | |
503 | //\r | |
b422b62c | 504 | // Enable interrupt to receive Debug Timer interrupt\r |
505 | //\r | |
506 | EnableInterrupts ();\r | |
18b144ea | 507 | \r |
b422b62c | 508 | break;\r |
18b144ea | 509 | \r |
b422b62c | 510 | case DEBUG_AGENT_INIT_S3:\r |
18b144ea | 511 | \r |
b422b62c | 512 | if (Context != NULL) {\r |
513 | Ia32Idtr = (IA32_DESCRIPTOR *) Context;\r | |
514 | Ia32IdtEntry = (IA32_IDT_ENTRY *)(Ia32Idtr->Base);\r | |
4fe43eb3 | 515 | MailboxLocation = (UINT64 *) (UINTN) (Ia32IdtEntry[DEBUG_MAILBOX_VECTOR].Bits.OffsetLow +\r |
fe0c434e | 516 | (UINT32) (Ia32IdtEntry[DEBUG_MAILBOX_VECTOR].Bits.OffsetHigh << 16));\r |
b422b62c | 517 | Mailbox = (DEBUG_AGENT_MAILBOX *)(UINTN)(*MailboxLocation);\r |
518 | VerifyMailboxChecksum (Mailbox);\r | |
519 | }\r | |
18b144ea | 520 | //\r |
3bf04a71 JF |
521 | // Save Mailbox pointer in global variable\r |
522 | //\r | |
523 | mMailboxPointer = Mailbox;\r | |
524 | //\r | |
adcc2727 | 525 | // Set up Debug Agent Environment and try to connect HOST if required\r |
18b144ea | 526 | //\r |
adcc2727 | 527 | SetupDebugAgentEnvironment (Mailbox);\r |
18b144ea | 528 | //\r |
b422b62c | 529 | // Disable interrupt\r |
18b144ea | 530 | //\r |
b422b62c | 531 | DisableInterrupts ();\r |
532 | FindAndReportModuleImageInfo (SIZE_4KB);\r | |
533 | if (GetDebugFlag (DEBUG_AGENT_FLAG_BREAK_BOOT_SCRIPT) == 1) {\r | |
534 | //\r | |
535 | // If Boot Script entry break is set, code will be break at here.\r | |
536 | //\r | |
537 | CpuBreakpoint ();\r | |
538 | }\r | |
539 | break;\r | |
540 | \r | |
541 | default:\r | |
18b144ea | 542 | //\r |
4fe43eb3 | 543 | // Only DEBUG_AGENT_INIT_PREMEM_SEC and DEBUG_AGENT_INIT_POSTMEM_SEC are allowed for this\r |
b422b62c | 544 | // Debug Agent library instance.\r |
18b144ea | 545 | //\r |
b422b62c | 546 | DEBUG ((EFI_D_ERROR, "Debug Agent: The InitFlag value is not allowed!\n"));\r |
547 | CpuDeadLoop ();\r | |
548 | break;\r | |
18b144ea | 549 | }\r |
18b144ea | 550 | }\r |