]>
Commit | Line | Data |
---|---|---|
1 | /** @file\r | |
2 | Main SEC phase code. Transitions to PEI.\r | |
3 | \r | |
4 | Copyright (c) 2008 - 2015, Intel Corporation. All rights reserved.<BR>\r | |
5 | (C) Copyright 2016 Hewlett Packard Enterprise Development LP<BR>\r | |
6 | Copyright (c) 2020, Advanced Micro Devices, Inc. All rights reserved.<BR>\r | |
7 | \r | |
8 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
9 | \r | |
10 | **/\r | |
11 | \r | |
12 | #include <PiPei.h>\r | |
13 | \r | |
14 | #include <Library/PeimEntryPoint.h>\r | |
15 | #include <Library/BaseLib.h>\r | |
16 | #include <Library/DebugLib.h>\r | |
17 | #include <Library/BaseMemoryLib.h>\r | |
18 | #include <Library/PeiServicesLib.h>\r | |
19 | #include <Library/PcdLib.h>\r | |
20 | #include <Library/CpuLib.h>\r | |
21 | #include <Library/UefiCpuLib.h>\r | |
22 | #include <Library/DebugAgentLib.h>\r | |
23 | #include <Library/IoLib.h>\r | |
24 | #include <Library/PeCoffLib.h>\r | |
25 | #include <Library/PeCoffGetEntryPointLib.h>\r | |
26 | #include <Library/PeCoffExtraActionLib.h>\r | |
27 | #include <Library/ExtractGuidedSectionLib.h>\r | |
28 | #include <Library/LocalApicLib.h>\r | |
29 | #include <Library/CpuExceptionHandlerLib.h>\r | |
30 | #include <Ppi/TemporaryRamSupport.h>\r | |
31 | #include <Ppi/MpInitLibDep.h>\r | |
32 | #include <Library/PlatformInitLib.h>\r | |
33 | #include <Library/CcProbeLib.h>\r | |
34 | #include "AmdSev.h"\r | |
35 | \r | |
36 | #define SEC_IDT_ENTRY_COUNT 34\r | |
37 | \r | |
38 | typedef struct _SEC_IDT_TABLE {\r | |
39 | EFI_PEI_SERVICES *PeiService;\r | |
40 | IA32_IDT_GATE_DESCRIPTOR IdtTable[SEC_IDT_ENTRY_COUNT];\r | |
41 | } SEC_IDT_TABLE;\r | |
42 | \r | |
43 | VOID\r | |
44 | EFIAPI\r | |
45 | SecStartupPhase2 (\r | |
46 | IN VOID *Context\r | |
47 | );\r | |
48 | \r | |
49 | EFI_STATUS\r | |
50 | EFIAPI\r | |
51 | TemporaryRamMigration (\r | |
52 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
53 | IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,\r | |
54 | IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,\r | |
55 | IN UINTN CopySize\r | |
56 | );\r | |
57 | \r | |
58 | //\r | |
59 | //\r | |
60 | //\r | |
61 | EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI mTemporaryRamSupportPpi = {\r | |
62 | TemporaryRamMigration\r | |
63 | };\r | |
64 | \r | |
65 | EFI_PEI_PPI_DESCRIPTOR mPrivateDispatchTableMp[] = {\r | |
66 | {\r | |
67 | (EFI_PEI_PPI_DESCRIPTOR_PPI),\r | |
68 | &gEfiTemporaryRamSupportPpiGuid,\r | |
69 | &mTemporaryRamSupportPpi\r | |
70 | },\r | |
71 | {\r | |
72 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
73 | &gEfiPeiMpInitLibMpDepPpiGuid,\r | |
74 | NULL\r | |
75 | },\r | |
76 | };\r | |
77 | \r | |
78 | EFI_PEI_PPI_DESCRIPTOR mPrivateDispatchTableUp[] = {\r | |
79 | {\r | |
80 | (EFI_PEI_PPI_DESCRIPTOR_PPI),\r | |
81 | &gEfiTemporaryRamSupportPpiGuid,\r | |
82 | &mTemporaryRamSupportPpi\r | |
83 | },\r | |
84 | {\r | |
85 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
86 | &gEfiPeiMpInitLibUpDepPpiGuid,\r | |
87 | NULL\r | |
88 | },\r | |
89 | };\r | |
90 | \r | |
91 | //\r | |
92 | // Template of an IDT entry pointing to 10:FFFFFFE4h.\r | |
93 | //\r | |
94 | IA32_IDT_GATE_DESCRIPTOR mIdtEntryTemplate = {\r | |
95 | { // Bits\r | |
96 | 0xffe4, // OffsetLow\r | |
97 | 0x10, // Selector\r | |
98 | 0x0, // Reserved_0\r | |
99 | IA32_IDT_GATE_TYPE_INTERRUPT_32, // GateType\r | |
100 | 0xffff // OffsetHigh\r | |
101 | }\r | |
102 | };\r | |
103 | \r | |
104 | /**\r | |
105 | Locates the main boot firmware volume.\r | |
106 | \r | |
107 | @param[in,out] BootFv On input, the base of the BootFv\r | |
108 | On output, the decompressed main firmware volume\r | |
109 | \r | |
110 | @retval EFI_SUCCESS The main firmware volume was located and decompressed\r | |
111 | @retval EFI_NOT_FOUND The main firmware volume was not found\r | |
112 | \r | |
113 | **/\r | |
114 | EFI_STATUS\r | |
115 | FindMainFv (\r | |
116 | IN OUT EFI_FIRMWARE_VOLUME_HEADER **BootFv\r | |
117 | )\r | |
118 | {\r | |
119 | EFI_FIRMWARE_VOLUME_HEADER *Fv;\r | |
120 | UINTN Distance;\r | |
121 | \r | |
122 | ASSERT (((UINTN)*BootFv & EFI_PAGE_MASK) == 0);\r | |
123 | \r | |
124 | Fv = *BootFv;\r | |
125 | Distance = (UINTN)(*BootFv)->FvLength;\r | |
126 | do {\r | |
127 | Fv = (EFI_FIRMWARE_VOLUME_HEADER *)((UINT8 *)Fv - EFI_PAGE_SIZE);\r | |
128 | Distance += EFI_PAGE_SIZE;\r | |
129 | if (Distance > SIZE_32MB) {\r | |
130 | return EFI_NOT_FOUND;\r | |
131 | }\r | |
132 | \r | |
133 | if (Fv->Signature != EFI_FVH_SIGNATURE) {\r | |
134 | continue;\r | |
135 | }\r | |
136 | \r | |
137 | if ((UINTN)Fv->FvLength > Distance) {\r | |
138 | continue;\r | |
139 | }\r | |
140 | \r | |
141 | *BootFv = Fv;\r | |
142 | return EFI_SUCCESS;\r | |
143 | } while (TRUE);\r | |
144 | }\r | |
145 | \r | |
146 | /**\r | |
147 | Locates a section within a series of sections\r | |
148 | with the specified section type.\r | |
149 | \r | |
150 | The Instance parameter indicates which instance of the section\r | |
151 | type to return. (0 is first instance, 1 is second...)\r | |
152 | \r | |
153 | @param[in] Sections The sections to search\r | |
154 | @param[in] SizeOfSections Total size of all sections\r | |
155 | @param[in] SectionType The section type to locate\r | |
156 | @param[in] Instance The section instance number\r | |
157 | @param[out] FoundSection The FFS section if found\r | |
158 | \r | |
159 | @retval EFI_SUCCESS The file and section was found\r | |
160 | @retval EFI_NOT_FOUND The file and section was not found\r | |
161 | @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted\r | |
162 | \r | |
163 | **/\r | |
164 | EFI_STATUS\r | |
165 | FindFfsSectionInstance (\r | |
166 | IN VOID *Sections,\r | |
167 | IN UINTN SizeOfSections,\r | |
168 | IN EFI_SECTION_TYPE SectionType,\r | |
169 | IN UINTN Instance,\r | |
170 | OUT EFI_COMMON_SECTION_HEADER **FoundSection\r | |
171 | )\r | |
172 | {\r | |
173 | EFI_PHYSICAL_ADDRESS CurrentAddress;\r | |
174 | UINT32 Size;\r | |
175 | EFI_PHYSICAL_ADDRESS EndOfSections;\r | |
176 | EFI_COMMON_SECTION_HEADER *Section;\r | |
177 | EFI_PHYSICAL_ADDRESS EndOfSection;\r | |
178 | \r | |
179 | //\r | |
180 | // Loop through the FFS file sections within the PEI Core FFS file\r | |
181 | //\r | |
182 | EndOfSection = (EFI_PHYSICAL_ADDRESS)(UINTN)Sections;\r | |
183 | EndOfSections = EndOfSection + SizeOfSections;\r | |
184 | for ( ; ;) {\r | |
185 | if (EndOfSection == EndOfSections) {\r | |
186 | break;\r | |
187 | }\r | |
188 | \r | |
189 | CurrentAddress = (EndOfSection + 3) & ~(3ULL);\r | |
190 | if (CurrentAddress >= EndOfSections) {\r | |
191 | return EFI_VOLUME_CORRUPTED;\r | |
192 | }\r | |
193 | \r | |
194 | Section = (EFI_COMMON_SECTION_HEADER *)(UINTN)CurrentAddress;\r | |
195 | \r | |
196 | Size = SECTION_SIZE (Section);\r | |
197 | if (Size < sizeof (*Section)) {\r | |
198 | return EFI_VOLUME_CORRUPTED;\r | |
199 | }\r | |
200 | \r | |
201 | EndOfSection = CurrentAddress + Size;\r | |
202 | if (EndOfSection > EndOfSections) {\r | |
203 | return EFI_VOLUME_CORRUPTED;\r | |
204 | }\r | |
205 | \r | |
206 | //\r | |
207 | // Look for the requested section type\r | |
208 | //\r | |
209 | if (Section->Type == SectionType) {\r | |
210 | if (Instance == 0) {\r | |
211 | *FoundSection = Section;\r | |
212 | return EFI_SUCCESS;\r | |
213 | } else {\r | |
214 | Instance--;\r | |
215 | }\r | |
216 | }\r | |
217 | }\r | |
218 | \r | |
219 | return EFI_NOT_FOUND;\r | |
220 | }\r | |
221 | \r | |
222 | /**\r | |
223 | Locates a section within a series of sections\r | |
224 | with the specified section type.\r | |
225 | \r | |
226 | @param[in] Sections The sections to search\r | |
227 | @param[in] SizeOfSections Total size of all sections\r | |
228 | @param[in] SectionType The section type to locate\r | |
229 | @param[out] FoundSection The FFS section if found\r | |
230 | \r | |
231 | @retval EFI_SUCCESS The file and section was found\r | |
232 | @retval EFI_NOT_FOUND The file and section was not found\r | |
233 | @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted\r | |
234 | \r | |
235 | **/\r | |
236 | EFI_STATUS\r | |
237 | FindFfsSectionInSections (\r | |
238 | IN VOID *Sections,\r | |
239 | IN UINTN SizeOfSections,\r | |
240 | IN EFI_SECTION_TYPE SectionType,\r | |
241 | OUT EFI_COMMON_SECTION_HEADER **FoundSection\r | |
242 | )\r | |
243 | {\r | |
244 | return FindFfsSectionInstance (\r | |
245 | Sections,\r | |
246 | SizeOfSections,\r | |
247 | SectionType,\r | |
248 | 0,\r | |
249 | FoundSection\r | |
250 | );\r | |
251 | }\r | |
252 | \r | |
253 | /**\r | |
254 | Locates a FFS file with the specified file type and a section\r | |
255 | within that file with the specified section type.\r | |
256 | \r | |
257 | @param[in] Fv The firmware volume to search\r | |
258 | @param[in] FileType The file type to locate\r | |
259 | @param[in] SectionType The section type to locate\r | |
260 | @param[out] FoundSection The FFS section if found\r | |
261 | \r | |
262 | @retval EFI_SUCCESS The file and section was found\r | |
263 | @retval EFI_NOT_FOUND The file and section was not found\r | |
264 | @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted\r | |
265 | \r | |
266 | **/\r | |
267 | EFI_STATUS\r | |
268 | FindFfsFileAndSection (\r | |
269 | IN EFI_FIRMWARE_VOLUME_HEADER *Fv,\r | |
270 | IN EFI_FV_FILETYPE FileType,\r | |
271 | IN EFI_SECTION_TYPE SectionType,\r | |
272 | OUT EFI_COMMON_SECTION_HEADER **FoundSection\r | |
273 | )\r | |
274 | {\r | |
275 | EFI_STATUS Status;\r | |
276 | EFI_PHYSICAL_ADDRESS CurrentAddress;\r | |
277 | EFI_PHYSICAL_ADDRESS EndOfFirmwareVolume;\r | |
278 | EFI_FFS_FILE_HEADER *File;\r | |
279 | UINT32 Size;\r | |
280 | EFI_PHYSICAL_ADDRESS EndOfFile;\r | |
281 | \r | |
282 | if (Fv->Signature != EFI_FVH_SIGNATURE) {\r | |
283 | DEBUG ((DEBUG_ERROR, "FV at %p does not have FV header signature\n", Fv));\r | |
284 | return EFI_VOLUME_CORRUPTED;\r | |
285 | }\r | |
286 | \r | |
287 | CurrentAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)Fv;\r | |
288 | EndOfFirmwareVolume = CurrentAddress + Fv->FvLength;\r | |
289 | \r | |
290 | //\r | |
291 | // Loop through the FFS files in the Boot Firmware Volume\r | |
292 | //\r | |
293 | for (EndOfFile = CurrentAddress + Fv->HeaderLength; ; ) {\r | |
294 | CurrentAddress = (EndOfFile + 7) & ~(7ULL);\r | |
295 | if (CurrentAddress > EndOfFirmwareVolume) {\r | |
296 | return EFI_VOLUME_CORRUPTED;\r | |
297 | }\r | |
298 | \r | |
299 | File = (EFI_FFS_FILE_HEADER *)(UINTN)CurrentAddress;\r | |
300 | Size = FFS_FILE_SIZE (File);\r | |
301 | if (Size < (sizeof (*File) + sizeof (EFI_COMMON_SECTION_HEADER))) {\r | |
302 | return EFI_VOLUME_CORRUPTED;\r | |
303 | }\r | |
304 | \r | |
305 | EndOfFile = CurrentAddress + Size;\r | |
306 | if (EndOfFile > EndOfFirmwareVolume) {\r | |
307 | return EFI_VOLUME_CORRUPTED;\r | |
308 | }\r | |
309 | \r | |
310 | //\r | |
311 | // Look for the request file type\r | |
312 | //\r | |
313 | if (File->Type != FileType) {\r | |
314 | continue;\r | |
315 | }\r | |
316 | \r | |
317 | Status = FindFfsSectionInSections (\r | |
318 | (VOID *)(File + 1),\r | |
319 | (UINTN)EndOfFile - (UINTN)(File + 1),\r | |
320 | SectionType,\r | |
321 | FoundSection\r | |
322 | );\r | |
323 | if (!EFI_ERROR (Status) || (Status == EFI_VOLUME_CORRUPTED)) {\r | |
324 | return Status;\r | |
325 | }\r | |
326 | }\r | |
327 | }\r | |
328 | \r | |
329 | /**\r | |
330 | Locates the compressed main firmware volume and decompresses it.\r | |
331 | \r | |
332 | @param[in,out] Fv On input, the firmware volume to search\r | |
333 | On output, the decompressed BOOT/PEI FV\r | |
334 | \r | |
335 | @retval EFI_SUCCESS The file and section was found\r | |
336 | @retval EFI_NOT_FOUND The file and section was not found\r | |
337 | @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted\r | |
338 | \r | |
339 | **/\r | |
340 | EFI_STATUS\r | |
341 | DecompressMemFvs (\r | |
342 | IN OUT EFI_FIRMWARE_VOLUME_HEADER **Fv\r | |
343 | )\r | |
344 | {\r | |
345 | EFI_STATUS Status;\r | |
346 | EFI_GUID_DEFINED_SECTION *Section;\r | |
347 | UINT32 OutputBufferSize;\r | |
348 | UINT32 ScratchBufferSize;\r | |
349 | UINT16 SectionAttribute;\r | |
350 | UINT32 AuthenticationStatus;\r | |
351 | VOID *OutputBuffer;\r | |
352 | VOID *ScratchBuffer;\r | |
353 | EFI_COMMON_SECTION_HEADER *FvSection;\r | |
354 | EFI_FIRMWARE_VOLUME_HEADER *PeiMemFv;\r | |
355 | EFI_FIRMWARE_VOLUME_HEADER *DxeMemFv;\r | |
356 | UINT32 FvHeaderSize;\r | |
357 | UINT32 FvSectionSize;\r | |
358 | \r | |
359 | FvSection = (EFI_COMMON_SECTION_HEADER *)NULL;\r | |
360 | \r | |
361 | Status = FindFfsFileAndSection (\r | |
362 | *Fv,\r | |
363 | EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE,\r | |
364 | EFI_SECTION_GUID_DEFINED,\r | |
365 | (EFI_COMMON_SECTION_HEADER **)&Section\r | |
366 | );\r | |
367 | if (EFI_ERROR (Status)) {\r | |
368 | DEBUG ((DEBUG_ERROR, "Unable to find GUID defined section\n"));\r | |
369 | return Status;\r | |
370 | }\r | |
371 | \r | |
372 | Status = ExtractGuidedSectionGetInfo (\r | |
373 | Section,\r | |
374 | &OutputBufferSize,\r | |
375 | &ScratchBufferSize,\r | |
376 | &SectionAttribute\r | |
377 | );\r | |
378 | if (EFI_ERROR (Status)) {\r | |
379 | DEBUG ((DEBUG_ERROR, "Unable to GetInfo for GUIDed section\n"));\r | |
380 | return Status;\r | |
381 | }\r | |
382 | \r | |
383 | OutputBuffer = (VOID *)((UINT8 *)(UINTN)PcdGet32 (PcdOvmfDxeMemFvBase) + SIZE_1MB);\r | |
384 | ScratchBuffer = ALIGN_POINTER ((UINT8 *)OutputBuffer + OutputBufferSize, SIZE_1MB);\r | |
385 | \r | |
386 | DEBUG ((\r | |
387 | DEBUG_VERBOSE,\r | |
388 | "%a: OutputBuffer@%p+0x%x ScratchBuffer@%p+0x%x "\r | |
389 | "PcdOvmfDecompressionScratchEnd=0x%x\n",\r | |
390 | __FUNCTION__,\r | |
391 | OutputBuffer,\r | |
392 | OutputBufferSize,\r | |
393 | ScratchBuffer,\r | |
394 | ScratchBufferSize,\r | |
395 | PcdGet32 (PcdOvmfDecompressionScratchEnd)\r | |
396 | ));\r | |
397 | ASSERT (\r | |
398 | (UINTN)ScratchBuffer + ScratchBufferSize ==\r | |
399 | PcdGet32 (PcdOvmfDecompressionScratchEnd)\r | |
400 | );\r | |
401 | \r | |
402 | Status = ExtractGuidedSectionDecode (\r | |
403 | Section,\r | |
404 | &OutputBuffer,\r | |
405 | ScratchBuffer,\r | |
406 | &AuthenticationStatus\r | |
407 | );\r | |
408 | if (EFI_ERROR (Status)) {\r | |
409 | DEBUG ((DEBUG_ERROR, "Error during GUID section decode\n"));\r | |
410 | return Status;\r | |
411 | }\r | |
412 | \r | |
413 | Status = FindFfsSectionInstance (\r | |
414 | OutputBuffer,\r | |
415 | OutputBufferSize,\r | |
416 | EFI_SECTION_FIRMWARE_VOLUME_IMAGE,\r | |
417 | 0,\r | |
418 | &FvSection\r | |
419 | );\r | |
420 | if (EFI_ERROR (Status)) {\r | |
421 | DEBUG ((DEBUG_ERROR, "Unable to find PEI FV section\n"));\r | |
422 | return Status;\r | |
423 | }\r | |
424 | \r | |
425 | ASSERT (\r | |
426 | SECTION_SIZE (FvSection) ==\r | |
427 | (PcdGet32 (PcdOvmfPeiMemFvSize) + sizeof (*FvSection))\r | |
428 | );\r | |
429 | ASSERT (FvSection->Type == EFI_SECTION_FIRMWARE_VOLUME_IMAGE);\r | |
430 | \r | |
431 | PeiMemFv = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdOvmfPeiMemFvBase);\r | |
432 | CopyMem (PeiMemFv, (VOID *)(FvSection + 1), PcdGet32 (PcdOvmfPeiMemFvSize));\r | |
433 | \r | |
434 | if (PeiMemFv->Signature != EFI_FVH_SIGNATURE) {\r | |
435 | DEBUG ((DEBUG_ERROR, "Extracted FV at %p does not have FV header signature\n", PeiMemFv));\r | |
436 | CpuDeadLoop ();\r | |
437 | return EFI_VOLUME_CORRUPTED;\r | |
438 | }\r | |
439 | \r | |
440 | Status = FindFfsSectionInstance (\r | |
441 | OutputBuffer,\r | |
442 | OutputBufferSize,\r | |
443 | EFI_SECTION_FIRMWARE_VOLUME_IMAGE,\r | |
444 | 1,\r | |
445 | &FvSection\r | |
446 | );\r | |
447 | if (EFI_ERROR (Status)) {\r | |
448 | DEBUG ((DEBUG_ERROR, "Unable to find DXE FV section\n"));\r | |
449 | return Status;\r | |
450 | }\r | |
451 | \r | |
452 | ASSERT (FvSection->Type == EFI_SECTION_FIRMWARE_VOLUME_IMAGE);\r | |
453 | \r | |
454 | if (IS_SECTION2 (FvSection)) {\r | |
455 | FvSectionSize = SECTION2_SIZE (FvSection);\r | |
456 | FvHeaderSize = sizeof (EFI_COMMON_SECTION_HEADER2);\r | |
457 | } else {\r | |
458 | FvSectionSize = SECTION_SIZE (FvSection);\r | |
459 | FvHeaderSize = sizeof (EFI_COMMON_SECTION_HEADER);\r | |
460 | }\r | |
461 | \r | |
462 | ASSERT (FvSectionSize == (PcdGet32 (PcdOvmfDxeMemFvSize) + FvHeaderSize));\r | |
463 | \r | |
464 | DxeMemFv = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdOvmfDxeMemFvBase);\r | |
465 | CopyMem (DxeMemFv, (VOID *)((UINTN)FvSection + FvHeaderSize), PcdGet32 (PcdOvmfDxeMemFvSize));\r | |
466 | \r | |
467 | if (DxeMemFv->Signature != EFI_FVH_SIGNATURE) {\r | |
468 | DEBUG ((DEBUG_ERROR, "Extracted FV at %p does not have FV header signature\n", DxeMemFv));\r | |
469 | CpuDeadLoop ();\r | |
470 | return EFI_VOLUME_CORRUPTED;\r | |
471 | }\r | |
472 | \r | |
473 | *Fv = PeiMemFv;\r | |
474 | return EFI_SUCCESS;\r | |
475 | }\r | |
476 | \r | |
477 | /**\r | |
478 | Locates the PEI Core entry point address\r | |
479 | \r | |
480 | @param[in] Fv The firmware volume to search\r | |
481 | @param[out] PeiCoreEntryPoint The entry point of the PEI Core image\r | |
482 | \r | |
483 | @retval EFI_SUCCESS The file and section was found\r | |
484 | @retval EFI_NOT_FOUND The file and section was not found\r | |
485 | @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted\r | |
486 | \r | |
487 | **/\r | |
488 | EFI_STATUS\r | |
489 | FindPeiCoreImageBaseInFv (\r | |
490 | IN EFI_FIRMWARE_VOLUME_HEADER *Fv,\r | |
491 | OUT EFI_PHYSICAL_ADDRESS *PeiCoreImageBase\r | |
492 | )\r | |
493 | {\r | |
494 | EFI_STATUS Status;\r | |
495 | EFI_COMMON_SECTION_HEADER *Section;\r | |
496 | \r | |
497 | Status = FindFfsFileAndSection (\r | |
498 | Fv,\r | |
499 | EFI_FV_FILETYPE_PEI_CORE,\r | |
500 | EFI_SECTION_PE32,\r | |
501 | &Section\r | |
502 | );\r | |
503 | if (EFI_ERROR (Status)) {\r | |
504 | Status = FindFfsFileAndSection (\r | |
505 | Fv,\r | |
506 | EFI_FV_FILETYPE_PEI_CORE,\r | |
507 | EFI_SECTION_TE,\r | |
508 | &Section\r | |
509 | );\r | |
510 | if (EFI_ERROR (Status)) {\r | |
511 | DEBUG ((DEBUG_ERROR, "Unable to find PEI Core image\n"));\r | |
512 | return Status;\r | |
513 | }\r | |
514 | }\r | |
515 | \r | |
516 | *PeiCoreImageBase = (EFI_PHYSICAL_ADDRESS)(UINTN)(Section + 1);\r | |
517 | return EFI_SUCCESS;\r | |
518 | }\r | |
519 | \r | |
520 | /**\r | |
521 | Reads 8-bits of CMOS data.\r | |
522 | \r | |
523 | Reads the 8-bits of CMOS data at the location specified by Index.\r | |
524 | The 8-bit read value is returned.\r | |
525 | \r | |
526 | @param Index The CMOS location to read.\r | |
527 | \r | |
528 | @return The value read.\r | |
529 | \r | |
530 | **/\r | |
531 | STATIC\r | |
532 | UINT8\r | |
533 | CmosRead8 (\r | |
534 | IN UINTN Index\r | |
535 | )\r | |
536 | {\r | |
537 | IoWrite8 (0x70, (UINT8)Index);\r | |
538 | return IoRead8 (0x71);\r | |
539 | }\r | |
540 | \r | |
541 | STATIC\r | |
542 | BOOLEAN\r | |
543 | IsS3Resume (\r | |
544 | VOID\r | |
545 | )\r | |
546 | {\r | |
547 | return (CmosRead8 (0xF) == 0xFE);\r | |
548 | }\r | |
549 | \r | |
550 | STATIC\r | |
551 | EFI_STATUS\r | |
552 | GetS3ResumePeiFv (\r | |
553 | IN OUT EFI_FIRMWARE_VOLUME_HEADER **PeiFv\r | |
554 | )\r | |
555 | {\r | |
556 | *PeiFv = (EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdOvmfPeiMemFvBase);\r | |
557 | return EFI_SUCCESS;\r | |
558 | }\r | |
559 | \r | |
560 | /**\r | |
561 | Locates the PEI Core entry point address\r | |
562 | \r | |
563 | @param[in,out] Fv The firmware volume to search\r | |
564 | @param[out] PeiCoreEntryPoint The entry point of the PEI Core image\r | |
565 | \r | |
566 | @retval EFI_SUCCESS The file and section was found\r | |
567 | @retval EFI_NOT_FOUND The file and section was not found\r | |
568 | @retval EFI_VOLUME_CORRUPTED The firmware volume was corrupted\r | |
569 | \r | |
570 | **/\r | |
571 | VOID\r | |
572 | FindPeiCoreImageBase (\r | |
573 | IN OUT EFI_FIRMWARE_VOLUME_HEADER **BootFv,\r | |
574 | OUT EFI_PHYSICAL_ADDRESS *PeiCoreImageBase\r | |
575 | )\r | |
576 | {\r | |
577 | BOOLEAN S3Resume;\r | |
578 | \r | |
579 | *PeiCoreImageBase = 0;\r | |
580 | \r | |
581 | S3Resume = IsS3Resume ();\r | |
582 | if (S3Resume && !FeaturePcdGet (PcdSmmSmramRequire)) {\r | |
583 | //\r | |
584 | // A malicious runtime OS may have injected something into our previously\r | |
585 | // decoded PEI FV, but we don't care about that unless SMM/SMRAM is required.\r | |
586 | //\r | |
587 | DEBUG ((DEBUG_VERBOSE, "SEC: S3 resume\n"));\r | |
588 | GetS3ResumePeiFv (BootFv);\r | |
589 | } else {\r | |
590 | //\r | |
591 | // We're either not resuming, or resuming "securely" -- we'll decompress\r | |
592 | // both PEI FV and DXE FV from pristine flash.\r | |
593 | //\r | |
594 | DEBUG ((\r | |
595 | DEBUG_VERBOSE,\r | |
596 | "SEC: %a\n",\r | |
597 | S3Resume ? "S3 resume (with PEI decompression)" : "Normal boot"\r | |
598 | ));\r | |
599 | FindMainFv (BootFv);\r | |
600 | \r | |
601 | DecompressMemFvs (BootFv);\r | |
602 | }\r | |
603 | \r | |
604 | FindPeiCoreImageBaseInFv (*BootFv, PeiCoreImageBase);\r | |
605 | }\r | |
606 | \r | |
607 | /**\r | |
608 | Find core image base.\r | |
609 | \r | |
610 | **/\r | |
611 | EFI_STATUS\r | |
612 | FindImageBase (\r | |
613 | IN EFI_FIRMWARE_VOLUME_HEADER *BootFirmwareVolumePtr,\r | |
614 | OUT EFI_PHYSICAL_ADDRESS *SecCoreImageBase\r | |
615 | )\r | |
616 | {\r | |
617 | EFI_PHYSICAL_ADDRESS CurrentAddress;\r | |
618 | EFI_PHYSICAL_ADDRESS EndOfFirmwareVolume;\r | |
619 | EFI_FFS_FILE_HEADER *File;\r | |
620 | UINT32 Size;\r | |
621 | EFI_PHYSICAL_ADDRESS EndOfFile;\r | |
622 | EFI_COMMON_SECTION_HEADER *Section;\r | |
623 | EFI_PHYSICAL_ADDRESS EndOfSection;\r | |
624 | \r | |
625 | *SecCoreImageBase = 0;\r | |
626 | \r | |
627 | CurrentAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)BootFirmwareVolumePtr;\r | |
628 | EndOfFirmwareVolume = CurrentAddress + BootFirmwareVolumePtr->FvLength;\r | |
629 | \r | |
630 | //\r | |
631 | // Loop through the FFS files in the Boot Firmware Volume\r | |
632 | //\r | |
633 | for (EndOfFile = CurrentAddress + BootFirmwareVolumePtr->HeaderLength; ; ) {\r | |
634 | CurrentAddress = (EndOfFile + 7) & 0xfffffffffffffff8ULL;\r | |
635 | if (CurrentAddress > EndOfFirmwareVolume) {\r | |
636 | return EFI_NOT_FOUND;\r | |
637 | }\r | |
638 | \r | |
639 | File = (EFI_FFS_FILE_HEADER *)(UINTN)CurrentAddress;\r | |
640 | Size = FFS_FILE_SIZE (File);\r | |
641 | if (Size < sizeof (*File)) {\r | |
642 | return EFI_NOT_FOUND;\r | |
643 | }\r | |
644 | \r | |
645 | EndOfFile = CurrentAddress + Size;\r | |
646 | if (EndOfFile > EndOfFirmwareVolume) {\r | |
647 | return EFI_NOT_FOUND;\r | |
648 | }\r | |
649 | \r | |
650 | //\r | |
651 | // Look for SEC Core\r | |
652 | //\r | |
653 | if (File->Type != EFI_FV_FILETYPE_SECURITY_CORE) {\r | |
654 | continue;\r | |
655 | }\r | |
656 | \r | |
657 | //\r | |
658 | // Loop through the FFS file sections within the FFS file\r | |
659 | //\r | |
660 | EndOfSection = (EFI_PHYSICAL_ADDRESS)(UINTN)(File + 1);\r | |
661 | for ( ; ;) {\r | |
662 | CurrentAddress = (EndOfSection + 3) & 0xfffffffffffffffcULL;\r | |
663 | Section = (EFI_COMMON_SECTION_HEADER *)(UINTN)CurrentAddress;\r | |
664 | \r | |
665 | Size = SECTION_SIZE (Section);\r | |
666 | if (Size < sizeof (*Section)) {\r | |
667 | return EFI_NOT_FOUND;\r | |
668 | }\r | |
669 | \r | |
670 | EndOfSection = CurrentAddress + Size;\r | |
671 | if (EndOfSection > EndOfFile) {\r | |
672 | return EFI_NOT_FOUND;\r | |
673 | }\r | |
674 | \r | |
675 | //\r | |
676 | // Look for executable sections\r | |
677 | //\r | |
678 | if ((Section->Type == EFI_SECTION_PE32) || (Section->Type == EFI_SECTION_TE)) {\r | |
679 | if (File->Type == EFI_FV_FILETYPE_SECURITY_CORE) {\r | |
680 | *SecCoreImageBase = (PHYSICAL_ADDRESS)(UINTN)(Section + 1);\r | |
681 | }\r | |
682 | \r | |
683 | break;\r | |
684 | }\r | |
685 | }\r | |
686 | \r | |
687 | //\r | |
688 | // SEC Core image found\r | |
689 | //\r | |
690 | if (*SecCoreImageBase != 0) {\r | |
691 | return EFI_SUCCESS;\r | |
692 | }\r | |
693 | }\r | |
694 | }\r | |
695 | \r | |
696 | /*\r | |
697 | Find and return Pei Core entry point.\r | |
698 | \r | |
699 | It also find SEC and PEI Core file debug information. It will report them if\r | |
700 | remote debug is enabled.\r | |
701 | \r | |
702 | **/\r | |
703 | VOID\r | |
704 | FindAndReportEntryPoints (\r | |
705 | IN EFI_FIRMWARE_VOLUME_HEADER **BootFirmwareVolumePtr,\r | |
706 | OUT EFI_PEI_CORE_ENTRY_POINT *PeiCoreEntryPoint\r | |
707 | )\r | |
708 | {\r | |
709 | EFI_STATUS Status;\r | |
710 | EFI_PHYSICAL_ADDRESS SecCoreImageBase;\r | |
711 | EFI_PHYSICAL_ADDRESS PeiCoreImageBase;\r | |
712 | PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r | |
713 | \r | |
714 | //\r | |
715 | // Find SEC Core and PEI Core image base\r | |
716 | //\r | |
717 | Status = FindImageBase (*BootFirmwareVolumePtr, &SecCoreImageBase);\r | |
718 | ASSERT_EFI_ERROR (Status);\r | |
719 | \r | |
720 | FindPeiCoreImageBase (BootFirmwareVolumePtr, &PeiCoreImageBase);\r | |
721 | \r | |
722 | ZeroMem ((VOID *)&ImageContext, sizeof (PE_COFF_LOADER_IMAGE_CONTEXT));\r | |
723 | //\r | |
724 | // Report SEC Core debug information when remote debug is enabled\r | |
725 | //\r | |
726 | ImageContext.ImageAddress = SecCoreImageBase;\r | |
727 | ImageContext.PdbPointer = PeCoffLoaderGetPdbPointer ((VOID *)(UINTN)ImageContext.ImageAddress);\r | |
728 | PeCoffLoaderRelocateImageExtraAction (&ImageContext);\r | |
729 | \r | |
730 | //\r | |
731 | // Report PEI Core debug information when remote debug is enabled\r | |
732 | //\r | |
733 | ImageContext.ImageAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)PeiCoreImageBase;\r | |
734 | ImageContext.PdbPointer = PeCoffLoaderGetPdbPointer ((VOID *)(UINTN)ImageContext.ImageAddress);\r | |
735 | PeCoffLoaderRelocateImageExtraAction (&ImageContext);\r | |
736 | \r | |
737 | //\r | |
738 | // Find PEI Core entry point\r | |
739 | //\r | |
740 | Status = PeCoffLoaderGetEntryPoint ((VOID *)(UINTN)PeiCoreImageBase, (VOID **)PeiCoreEntryPoint);\r | |
741 | if (EFI_ERROR (Status)) {\r | |
742 | *PeiCoreEntryPoint = 0;\r | |
743 | }\r | |
744 | \r | |
745 | return;\r | |
746 | }\r | |
747 | \r | |
748 | VOID\r | |
749 | EFIAPI\r | |
750 | SecCoreStartupWithStack (\r | |
751 | IN EFI_FIRMWARE_VOLUME_HEADER *BootFv,\r | |
752 | IN VOID *TopOfCurrentStack\r | |
753 | )\r | |
754 | {\r | |
755 | EFI_SEC_PEI_HAND_OFF SecCoreData;\r | |
756 | SEC_IDT_TABLE IdtTableInStack;\r | |
757 | IA32_DESCRIPTOR IdtDescriptor;\r | |
758 | UINT32 Index;\r | |
759 | volatile UINT8 *Table;\r | |
760 | \r | |
761 | #if defined (TDX_GUEST_SUPPORTED)\r | |
762 | if (CcProbe () == CcGuestTypeIntelTdx) {\r | |
763 | //\r | |
764 | // For Td guests, the memory map info is in TdHobLib. It should be processed\r | |
765 | // first so that the memory is accepted. Otherwise access to the unaccepted\r | |
766 | // memory will trigger tripple fault.\r | |
767 | //\r | |
768 | if (ProcessTdxHobList () != EFI_SUCCESS) {\r | |
769 | CpuDeadLoop ();\r | |
770 | }\r | |
771 | }\r | |
772 | \r | |
773 | #endif\r | |
774 | \r | |
775 | //\r | |
776 | // To ensure SMM can't be compromised on S3 resume, we must force re-init of\r | |
777 | // the BaseExtractGuidedSectionLib. Since this is before library contructors\r | |
778 | // are called, we must use a loop rather than SetMem.\r | |
779 | //\r | |
780 | Table = (UINT8 *)(UINTN)FixedPcdGet64 (PcdGuidedExtractHandlerTableAddress);\r | |
781 | for (Index = 0;\r | |
782 | Index < FixedPcdGet32 (PcdGuidedExtractHandlerTableSize);\r | |
783 | ++Index)\r | |
784 | {\r | |
785 | Table[Index] = 0;\r | |
786 | }\r | |
787 | \r | |
788 | //\r | |
789 | // Initialize IDT - Since this is before library constructors are called,\r | |
790 | // we use a loop rather than CopyMem.\r | |
791 | //\r | |
792 | IdtTableInStack.PeiService = NULL;\r | |
793 | \r | |
794 | for (Index = 0; Index < SEC_IDT_ENTRY_COUNT; Index++) {\r | |
795 | //\r | |
796 | // Declare the local variables that actually move the data elements as\r | |
797 | // volatile to prevent the optimizer from replacing this function with\r | |
798 | // the intrinsic memcpy()\r | |
799 | //\r | |
800 | CONST UINT8 *Src;\r | |
801 | volatile UINT8 *Dst;\r | |
802 | UINTN Byte;\r | |
803 | \r | |
804 | Src = (CONST UINT8 *)&mIdtEntryTemplate;\r | |
805 | Dst = (volatile UINT8 *)&IdtTableInStack.IdtTable[Index];\r | |
806 | for (Byte = 0; Byte < sizeof (mIdtEntryTemplate); Byte++) {\r | |
807 | Dst[Byte] = Src[Byte];\r | |
808 | }\r | |
809 | }\r | |
810 | \r | |
811 | IdtDescriptor.Base = (UINTN)&IdtTableInStack.IdtTable;\r | |
812 | IdtDescriptor.Limit = (UINT16)(sizeof (IdtTableInStack.IdtTable) - 1);\r | |
813 | \r | |
814 | if (SevEsIsEnabled ()) {\r | |
815 | SevEsProtocolCheck ();\r | |
816 | \r | |
817 | //\r | |
818 | // For SEV-ES guests, the exception handler is needed before calling\r | |
819 | // ProcessLibraryConstructorList() because some of the library constructors\r | |
820 | // perform some functions that result in #VC exceptions being generated.\r | |
821 | //\r | |
822 | // Due to this code executing before library constructors, *all* library\r | |
823 | // API calls are theoretically interface contract violations. However,\r | |
824 | // because this is SEC (executing in flash), those constructors cannot\r | |
825 | // write variables with static storage duration anyway. Furthermore, only\r | |
826 | // a small, restricted set of APIs, such as AsmWriteIdtr() and\r | |
827 | // InitializeCpuExceptionHandlers(), are called, where we require that the\r | |
828 | // underlying library not require constructors to have been invoked and\r | |
829 | // that the library instance not trigger any #VC exceptions.\r | |
830 | //\r | |
831 | AsmWriteIdtr (&IdtDescriptor);\r | |
832 | InitializeCpuExceptionHandlers (NULL);\r | |
833 | }\r | |
834 | \r | |
835 | ProcessLibraryConstructorList (NULL, NULL);\r | |
836 | \r | |
837 | if (!SevEsIsEnabled ()) {\r | |
838 | //\r | |
839 | // For non SEV-ES guests, just load the IDTR.\r | |
840 | //\r | |
841 | AsmWriteIdtr (&IdtDescriptor);\r | |
842 | } else {\r | |
843 | //\r | |
844 | // Under SEV-ES, the hypervisor can't modify CR0 and so can't enable\r | |
845 | // caching in order to speed up the boot. Enable caching early for\r | |
846 | // an SEV-ES guest.\r | |
847 | //\r | |
848 | AsmEnableCache ();\r | |
849 | }\r | |
850 | \r | |
851 | #if defined (TDX_GUEST_SUPPORTED)\r | |
852 | if (CcProbe () == CcGuestTypeIntelTdx) {\r | |
853 | //\r | |
854 | // InitializeCpuExceptionHandlers () should be called in Td guests so that\r | |
855 | // #VE exceptions can be handled correctly.\r | |
856 | //\r | |
857 | InitializeCpuExceptionHandlers (NULL);\r | |
858 | }\r | |
859 | \r | |
860 | #endif\r | |
861 | \r | |
862 | DEBUG ((\r | |
863 | DEBUG_INFO,\r | |
864 | "SecCoreStartupWithStack(0x%x, 0x%x)\n",\r | |
865 | (UINT32)(UINTN)BootFv,\r | |
866 | (UINT32)(UINTN)TopOfCurrentStack\r | |
867 | ));\r | |
868 | \r | |
869 | //\r | |
870 | // Initialize floating point operating environment\r | |
871 | // to be compliant with UEFI spec.\r | |
872 | //\r | |
873 | InitializeFloatingPointUnits ();\r | |
874 | \r | |
875 | #if defined (MDE_CPU_X64)\r | |
876 | //\r | |
877 | // ASSERT that the Page Tables were set by the reset vector code to\r | |
878 | // the address we expect.\r | |
879 | //\r | |
880 | ASSERT (AsmReadCr3 () == (UINTN)PcdGet32 (PcdOvmfSecPageTablesBase));\r | |
881 | #endif\r | |
882 | \r | |
883 | //\r | |
884 | // |-------------| <-- TopOfCurrentStack\r | |
885 | // | Stack | 32k\r | |
886 | // |-------------|\r | |
887 | // | Heap | 32k\r | |
888 | // |-------------| <-- SecCoreData.TemporaryRamBase\r | |
889 | //\r | |
890 | \r | |
891 | ASSERT (\r | |
892 | (UINTN)(PcdGet32 (PcdOvmfSecPeiTempRamBase) +\r | |
893 | PcdGet32 (PcdOvmfSecPeiTempRamSize)) ==\r | |
894 | (UINTN)TopOfCurrentStack\r | |
895 | );\r | |
896 | \r | |
897 | //\r | |
898 | // Initialize SEC hand-off state\r | |
899 | //\r | |
900 | SecCoreData.DataSize = sizeof (EFI_SEC_PEI_HAND_OFF);\r | |
901 | \r | |
902 | SecCoreData.TemporaryRamSize = (UINTN)PcdGet32 (PcdOvmfSecPeiTempRamSize);\r | |
903 | SecCoreData.TemporaryRamBase = (VOID *)((UINT8 *)TopOfCurrentStack - SecCoreData.TemporaryRamSize);\r | |
904 | \r | |
905 | SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;\r | |
906 | SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize >> 1;\r | |
907 | \r | |
908 | SecCoreData.StackBase = (UINT8 *)SecCoreData.TemporaryRamBase + SecCoreData.PeiTemporaryRamSize;\r | |
909 | SecCoreData.StackSize = SecCoreData.TemporaryRamSize >> 1;\r | |
910 | \r | |
911 | SecCoreData.BootFirmwareVolumeBase = BootFv;\r | |
912 | SecCoreData.BootFirmwareVolumeSize = (UINTN)BootFv->FvLength;\r | |
913 | \r | |
914 | //\r | |
915 | // Validate the System RAM used in the SEC Phase\r | |
916 | //\r | |
917 | SecValidateSystemRam ();\r | |
918 | \r | |
919 | //\r | |
920 | // Make sure the 8259 is masked before initializing the Debug Agent and the debug timer is enabled\r | |
921 | //\r | |
922 | IoWrite8 (0x21, 0xff);\r | |
923 | IoWrite8 (0xA1, 0xff);\r | |
924 | \r | |
925 | //\r | |
926 | // Initialize Local APIC Timer hardware and disable Local APIC Timer\r | |
927 | // interrupts before initializing the Debug Agent and the debug timer is\r | |
928 | // enabled.\r | |
929 | //\r | |
930 | InitializeApicTimer (0, MAX_UINT32, TRUE, 5);\r | |
931 | DisableApicTimerInterrupt ();\r | |
932 | \r | |
933 | //\r | |
934 | // Initialize Debug Agent to support source level debug in SEC/PEI phases before memory ready.\r | |
935 | //\r | |
936 | InitializeDebugAgent (DEBUG_AGENT_INIT_PREMEM_SEC, &SecCoreData, SecStartupPhase2);\r | |
937 | }\r | |
938 | \r | |
939 | /**\r | |
940 | Caller provided function to be invoked at the end of InitializeDebugAgent().\r | |
941 | \r | |
942 | Entry point to the C language phase of SEC. After the SEC assembly\r | |
943 | code has initialized some temporary memory and set up the stack,\r | |
944 | the control is transferred to this function.\r | |
945 | \r | |
946 | @param[in] Context The first input parameter of InitializeDebugAgent().\r | |
947 | \r | |
948 | **/\r | |
949 | VOID\r | |
950 | EFIAPI\r | |
951 | SecStartupPhase2 (\r | |
952 | IN VOID *Context\r | |
953 | )\r | |
954 | {\r | |
955 | EFI_SEC_PEI_HAND_OFF *SecCoreData;\r | |
956 | EFI_FIRMWARE_VOLUME_HEADER *BootFv;\r | |
957 | EFI_PEI_CORE_ENTRY_POINT PeiCoreEntryPoint;\r | |
958 | EFI_PEI_PPI_DESCRIPTOR *EfiPeiPpiDescriptor;\r | |
959 | \r | |
960 | SecCoreData = (EFI_SEC_PEI_HAND_OFF *)Context;\r | |
961 | \r | |
962 | //\r | |
963 | // Find PEI Core entry point. It will report SEC and Pei Core debug information if remote debug\r | |
964 | // is enabled.\r | |
965 | //\r | |
966 | BootFv = (EFI_FIRMWARE_VOLUME_HEADER *)SecCoreData->BootFirmwareVolumeBase;\r | |
967 | FindAndReportEntryPoints (&BootFv, &PeiCoreEntryPoint);\r | |
968 | SecCoreData->BootFirmwareVolumeBase = BootFv;\r | |
969 | SecCoreData->BootFirmwareVolumeSize = (UINTN)BootFv->FvLength;\r | |
970 | \r | |
971 | //\r | |
972 | // Td guest is required to use the MpInitLibUp (unique-processor version).\r | |
973 | // Other guests use the MpInitLib (multi-processor version).\r | |
974 | //\r | |
975 | if (CcProbe () == CcGuestTypeIntelTdx) {\r | |
976 | EfiPeiPpiDescriptor = (EFI_PEI_PPI_DESCRIPTOR *)&mPrivateDispatchTableUp;\r | |
977 | } else {\r | |
978 | EfiPeiPpiDescriptor = (EFI_PEI_PPI_DESCRIPTOR *)&mPrivateDispatchTableMp;\r | |
979 | }\r | |
980 | \r | |
981 | //\r | |
982 | // Transfer the control to the PEI core\r | |
983 | //\r | |
984 | (*PeiCoreEntryPoint)(SecCoreData, EfiPeiPpiDescriptor);\r | |
985 | \r | |
986 | //\r | |
987 | // If we get here then the PEI Core returned, which is not recoverable.\r | |
988 | //\r | |
989 | ASSERT (FALSE);\r | |
990 | CpuDeadLoop ();\r | |
991 | }\r | |
992 | \r | |
993 | EFI_STATUS\r | |
994 | EFIAPI\r | |
995 | TemporaryRamMigration (\r | |
996 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
997 | IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,\r | |
998 | IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,\r | |
999 | IN UINTN CopySize\r | |
1000 | )\r | |
1001 | {\r | |
1002 | IA32_DESCRIPTOR IdtDescriptor;\r | |
1003 | VOID *OldHeap;\r | |
1004 | VOID *NewHeap;\r | |
1005 | VOID *OldStack;\r | |
1006 | VOID *NewStack;\r | |
1007 | DEBUG_AGENT_CONTEXT_POSTMEM_SEC DebugAgentContext;\r | |
1008 | BOOLEAN OldStatus;\r | |
1009 | BASE_LIBRARY_JUMP_BUFFER JumpBuffer;\r | |
1010 | \r | |
1011 | DEBUG ((\r | |
1012 | DEBUG_INFO,\r | |
1013 | "TemporaryRamMigration(0x%Lx, 0x%Lx, 0x%Lx)\n",\r | |
1014 | TemporaryMemoryBase,\r | |
1015 | PermanentMemoryBase,\r | |
1016 | (UINT64)CopySize\r | |
1017 | ));\r | |
1018 | \r | |
1019 | OldHeap = (VOID *)(UINTN)TemporaryMemoryBase;\r | |
1020 | NewHeap = (VOID *)((UINTN)PermanentMemoryBase + (CopySize >> 1));\r | |
1021 | \r | |
1022 | OldStack = (VOID *)((UINTN)TemporaryMemoryBase + (CopySize >> 1));\r | |
1023 | NewStack = (VOID *)(UINTN)PermanentMemoryBase;\r | |
1024 | \r | |
1025 | DebugAgentContext.HeapMigrateOffset = (UINTN)NewHeap - (UINTN)OldHeap;\r | |
1026 | DebugAgentContext.StackMigrateOffset = (UINTN)NewStack - (UINTN)OldStack;\r | |
1027 | \r | |
1028 | OldStatus = SaveAndSetDebugTimerInterrupt (FALSE);\r | |
1029 | InitializeDebugAgent (DEBUG_AGENT_INIT_POSTMEM_SEC, (VOID *)&DebugAgentContext, NULL);\r | |
1030 | \r | |
1031 | //\r | |
1032 | // Migrate Heap\r | |
1033 | //\r | |
1034 | CopyMem (NewHeap, OldHeap, CopySize >> 1);\r | |
1035 | \r | |
1036 | //\r | |
1037 | // Migrate Stack\r | |
1038 | //\r | |
1039 | CopyMem (NewStack, OldStack, CopySize >> 1);\r | |
1040 | \r | |
1041 | //\r | |
1042 | // Rebase IDT table in permanent memory\r | |
1043 | //\r | |
1044 | AsmReadIdtr (&IdtDescriptor);\r | |
1045 | IdtDescriptor.Base = IdtDescriptor.Base - (UINTN)OldStack + (UINTN)NewStack;\r | |
1046 | \r | |
1047 | AsmWriteIdtr (&IdtDescriptor);\r | |
1048 | \r | |
1049 | //\r | |
1050 | // Use SetJump()/LongJump() to switch to a new stack.\r | |
1051 | //\r | |
1052 | if (SetJump (&JumpBuffer) == 0) {\r | |
1053 | #if defined (MDE_CPU_IA32)\r | |
1054 | JumpBuffer.Esp = JumpBuffer.Esp + DebugAgentContext.StackMigrateOffset;\r | |
1055 | JumpBuffer.Ebp = JumpBuffer.Ebp + DebugAgentContext.StackMigrateOffset;\r | |
1056 | #endif\r | |
1057 | #if defined (MDE_CPU_X64)\r | |
1058 | JumpBuffer.Rsp = JumpBuffer.Rsp + DebugAgentContext.StackMigrateOffset;\r | |
1059 | JumpBuffer.Rbp = JumpBuffer.Rbp + DebugAgentContext.StackMigrateOffset;\r | |
1060 | #endif\r | |
1061 | LongJump (&JumpBuffer, (UINTN)-1);\r | |
1062 | }\r | |
1063 | \r | |
1064 | SaveAndSetDebugTimerInterrupt (OldStatus);\r | |
1065 | \r | |
1066 | return EFI_SUCCESS;\r | |
1067 | }\r |