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615c6dd0 1/** @file\r
b1f6a7c6 2 EFI PEI Core dispatch services\r
3 \r
21d9882c 4Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r
cd5ebaa0 5This program and the accompanying materials\r
192f6d4c 6are licensed and made available under the terms and conditions of the BSD License\r
7which accompanies this distribution. The full text of the license may be found at\r
8http://opensource.org/licenses/bsd-license.php\r
9\r
10THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
12\r
615c6dd0 13**/\r
192f6d4c 14\r
0d516397 15#include "PeiMain.h"\r
192f6d4c 16\r
b1f6a7c6 17///\r
3d4d0c34 18/// temporary memory is filled with this initial value during SEC phase\r
b1f6a7c6 19///\r
a7715e73 20#define INIT_CAR_VALUE 0x5AA55AA5\r
21\r
797a9d67 22typedef struct {\r
23 EFI_STATUS_CODE_DATA DataHeader;\r
24 EFI_HANDLE Handle;\r
25} PEIM_FILE_HANDLE_EXTENDED_DATA;\r
26\r
b1f6a7c6 27/**\r
b0d803fe 28\r
29 Discover all Peims and optional Apriori file in one FV. There is at most one\r
30 Apriori file in one FV.\r
31\r
b0d803fe 32\r
3b428ade 33 @param Private Pointer to the private data passed in from caller\r
34 @param CoreFileHandle The instance of PEI_CORE_FV_HANDLE.\r
b0d803fe 35\r
b1f6a7c6 36**/\r
37VOID\r
38DiscoverPeimsAndOrderWithApriori (\r
39 IN PEI_CORE_INSTANCE *Private,\r
3b428ade 40 IN PEI_CORE_FV_HANDLE *CoreFileHandle\r
b1f6a7c6 41 )\r
b0d803fe 42{\r
43 EFI_STATUS Status;\r
890e5417 44 EFI_PEI_FILE_HANDLE FileHandle;\r
177aabe6 45 EFI_PEI_FILE_HANDLE AprioriFileHandle;\r
b0d803fe 46 EFI_GUID *Apriori;\r
47 UINTN Index;\r
48 UINTN Index2;\r
49 UINTN PeimIndex;\r
50 UINTN PeimCount;\r
51 EFI_GUID *Guid;\r
fe781940
SZ		 52 EFI_PEI_FILE_HANDLE *TempFileHandles;\r
53 EFI_GUID *FileGuid;\r
3b428ade 54 EFI_PEI_FIRMWARE_VOLUME_PPI *FvPpi;\r
55 EFI_FV_FILE_INFO FileInfo;\r
56 \r
57 FvPpi = CoreFileHandle->FvPpi;\r
58 \r
b0d803fe 59 //\r
60 // Walk the FV and find all the PEIMs and the Apriori file.\r
61 //\r
62 AprioriFileHandle = NULL;\r
63 Private->CurrentFvFileHandles[0] = NULL;\r
64 Guid = NULL;\r
65 FileHandle = NULL;\r
fe781940
SZ		 66 TempFileHandles = Private->FileHandles;\r
67 FileGuid = Private->FileGuid;\r
b0d803fe 68\r
69 //\r
70 // If the current Fv has been scanned, directly get its cachable record.\r
71 //\r
72 if (Private->Fv[Private->CurrentPeimFvCount].ScanFv) {\r
fe781940 73 CopyMem (Private->CurrentFvFileHandles, Private->Fv[Private->CurrentPeimFvCount].FvFileHandles, sizeof (EFI_PEI_FILE_HANDLE) * PcdGet32 (PcdPeiCoreMaxPeimPerFv));\r
b0d803fe 74 return;\r
75 }\r
76\r
77 //\r
78 // Go ahead to scan this Fv, and cache FileHandles within it.\r
79 //\r
9b8e61be 80 Status = EFI_NOT_FOUND;\r
fe781940 81 for (PeimCount = 0; PeimCount <= PcdGet32 (PcdPeiCoreMaxPeimPerFv); PeimCount++) {\r
3b428ade 82 Status = FvPpi->FindFileByType (FvPpi, PEI_CORE_INTERNAL_FFS_FILE_DISPATCH_TYPE, CoreFileHandle->FvHandle, &FileHandle);\r
fe781940 83 if (Status != EFI_SUCCESS || PeimCount == PcdGet32 (PcdPeiCoreMaxPeimPerFv)) {\r
b0d803fe 84 break;\r
85 }\r
58dcdada 86\r
b0d803fe 87 Private->CurrentFvFileHandles[PeimCount] = FileHandle;\r
88 }\r
9b8e61be 89\r
97b2c9b5 90 //\r
21d9882c
LG		 91 // Check whether the count of files exceeds the max support files in a FV image\r
92 // If more files are required in a FV image, PcdPeiCoreMaxPeimPerFv can be set to a larger value in DSC file.\r
97b2c9b5 93 //\r
fe781940 94 ASSERT ((Status != EFI_SUCCESS) || (PeimCount < PcdGet32 (PcdPeiCoreMaxPeimPerFv)));\r
b0d803fe 95\r
3b428ade 96 //\r
97 // Get Apriori File handle\r
98 //\r
58dcdada 99 Private->AprioriCount = 0;\r
3b428ade 100 Status = FvPpi->FindFileByName (FvPpi, &gPeiAprioriFileNameGuid, &CoreFileHandle->FvHandle, &AprioriFileHandle);\r
101 if (!EFI_ERROR(Status) && AprioriFileHandle != NULL) {\r
b0d803fe 102 //\r
103 // Read the Apriori file\r
104 //\r
3b428ade 105 Status = FvPpi->FindSectionByType (FvPpi, EFI_SECTION_RAW, AprioriFileHandle, (VOID **) &Apriori);\r
b0d803fe 106 if (!EFI_ERROR (Status)) {\r
107 //\r
108 // Calculate the number of PEIMs in the A Priori list\r
109 //\r
3b428ade 110 Status = FvPpi->GetFileInfo (FvPpi, AprioriFileHandle, &FileInfo);\r
111 ASSERT_EFI_ERROR (Status);\r
890e5417
SZ		 112 Private->AprioriCount = FileInfo.BufferSize;\r
113 if (IS_SECTION2 (FileInfo.Buffer)) {\r
114 Private->AprioriCount -= sizeof (EFI_COMMON_SECTION_HEADER2);\r
115 } else {\r
116 Private->AprioriCount -= sizeof (EFI_COMMON_SECTION_HEADER);\r
117 }\r
b0d803fe 118 Private->AprioriCount /= sizeof (EFI_GUID);\r
58dcdada 119\r
b0d803fe 120 for (Index = 0; Index < PeimCount; Index++) {\r
121 //\r
122 // Make an array of file name guids that matches the FileHandle array so we can convert\r
123 // quickly from file name to file handle\r
124 //\r
3b428ade 125 Status = FvPpi->GetFileInfo (FvPpi, Private->CurrentFvFileHandles[Index], &FileInfo);\r
126 CopyMem (&FileGuid[Index], &FileInfo.FileName, sizeof(EFI_GUID));\r
b0d803fe 127 }\r
128\r
129 //\r
130 // Walk through FileGuid array to find out who is invalid PEIM guid in Apriori file.\r
890e5417 131 // Add available PEIMs in Apriori file into TempFileHandles array at first.\r
b0d803fe 132 //\r
133 Index2 = 0;\r
134 for (Index = 0; Index2 < Private->AprioriCount; Index++) {\r
135 while (Index2 < Private->AprioriCount) {\r
136 Guid = ScanGuid (FileGuid, PeimCount * sizeof (EFI_GUID), &Apriori[Index2++]);\r
137 if (Guid != NULL) {\r
138 break;\r
139 }\r
140 }\r
141 if (Guid == NULL) {\r
58dcdada 142 break;\r
b0d803fe 143 }\r
144 PeimIndex = ((UINTN)Guid - (UINTN)&FileGuid[0])/sizeof (EFI_GUID);\r
145 TempFileHandles[Index] = Private->CurrentFvFileHandles[PeimIndex];\r
146\r
147 //\r
148 // Since we have copied the file handle we can remove it from this list.\r
149 //\r
150 Private->CurrentFvFileHandles[PeimIndex] = NULL;\r
151 }\r
152\r
153 //\r
154 // Update valid Aprioricount\r
155 //\r
156 Private->AprioriCount = Index;\r
58dcdada 157\r
b0d803fe 158 //\r
159 // Add in any PEIMs not in the Apriori file\r
160 //\r
161 for (;Index < PeimCount; Index++) {\r
162 for (Index2 = 0; Index2 < PeimCount; Index2++) {\r
163 if (Private->CurrentFvFileHandles[Index2] != NULL) {\r
164 TempFileHandles[Index] = Private->CurrentFvFileHandles[Index2];\r
165 Private->CurrentFvFileHandles[Index2] = NULL;\r
166 break;\r
167 }\r
168 }\r
169 }\r
170 //\r
171 //Index the end of array contains re-range Pei moudle.\r
172 //\r
173 TempFileHandles[Index] = NULL;\r
58dcdada 174\r
b0d803fe 175 //\r
176 // Private->CurrentFvFileHandles is currently in PEIM in the FV order.\r
58dcdada 177 // We need to update it to start with files in the A Priori list and\r
178 // then the remaining files in PEIM order.\r
b0d803fe 179 //\r
fe781940 180 CopyMem (Private->CurrentFvFileHandles, TempFileHandles, sizeof (EFI_PEI_FILE_HANDLE) * PcdGet32 (PcdPeiCoreMaxPeimPerFv));\r
b0d803fe 181 }\r
182 }\r
183 //\r
184 // Cache the current Fv File Handle. So that we don't have to scan the Fv again.\r
185 // Instead, we can retrieve the file handles within this Fv from cachable data.\r
186 //\r
187 Private->Fv[Private->CurrentPeimFvCount].ScanFv = TRUE;\r
fe781940 188 CopyMem (Private->Fv[Private->CurrentPeimFvCount].FvFileHandles, Private->CurrentFvFileHandles, sizeof (EFI_PEI_FILE_HANDLE) * PcdGet32 (PcdPeiCoreMaxPeimPerFv));\r
58dcdada 189\r
190}\r
191\r
54ea99a7 192//\r
193// This is the minimum memory required by DxeCore initialization. When LMFA feature enabled,\r
194// This part of memory still need reserved on the very top of memory so that the DXE Core could \r
195// use these memory for data initialization. This macro should be sync with the same marco\r
196// defined in DXE Core.\r
197//\r
198#define MINIMUM_INITIAL_MEMORY_SIZE 0x10000\r
9bfb4940 199/**\r
200 This function is to test if the memory range described in resource HOB is available or not. \r
201 \r
202 This function should only be invoked when Loading Module at Fixed Address(LMFA) feature is enabled. Some platform may allocate the \r
203 memory before PeiLoadFixAddressHook in invoked. so this function is to test if the memory range described by the input resource HOB is\r
204 available or not.\r
205\r
206 @param PrivateData Pointer to the private data passed in from caller\r
207 @param ResourceHob Pointer to a resource HOB which described the memory range described by the input resource HOB\r
208**/\r
209BOOLEAN\r
210PeiLoadFixAddressIsMemoryRangeAvailable (\r
211 IN PEI_CORE_INSTANCE *PrivateData,\r
212 IN EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob\r
213 )\r
214{\r
215 EFI_HOB_MEMORY_ALLOCATION *MemoryHob;\r
216 BOOLEAN IsAvailable;\r
217 EFI_PEI_HOB_POINTERS Hob;\r
218 \r
219 IsAvailable = TRUE;\r
220 if (PrivateData == NULL || ResourceHob == NULL) {\r
221 return FALSE;\r
222 }\r
223 //\r
224 // test if the memory range describe in the HOB is already allocated.\r
225 //\r
226 for (Hob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB(Hob)) {\r
227 // \r
228 // See if this is a memory allocation HOB \r
229 //\r
230 if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_MEMORY_ALLOCATION) { \r
231 MemoryHob = Hob.MemoryAllocation;\r
232 if(MemoryHob->AllocDescriptor.MemoryBaseAddress == ResourceHob->PhysicalStart && \r
233 MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength == ResourceHob->PhysicalStart + ResourceHob->ResourceLength) {\r
234 IsAvailable = FALSE;\r
235 break; \r
236 }\r
237 }\r
238 }\r
239 \r
240 return IsAvailable;\r
241 \r
242}\r
54ea99a7 243/**\r
244 Hook function for Loading Module at Fixed Address feature\r
245 \r
246 This function should only be invoked when Loading Module at Fixed Address(LMFA) feature is enabled. When feature is\r
247 configured as Load Modules at Fix Absolute Address, this function is to validate the top address assigned by user. When \r
248 feature is configured as Load Modules at Fixed Offset, the functino is to find the top address which is TOLM-TSEG in general. \r
249 And also the function will re-install PEI memory. \r
b0d803fe 250\r
54ea99a7 251 @param PrivateData Pointer to the private data passed in from caller\r
252\r
253**/\r
254VOID\r
255PeiLoadFixAddressHook(\r
256 IN PEI_CORE_INSTANCE *PrivateData\r
257 )\r
258{\r
259 EFI_PHYSICAL_ADDRESS TopLoadingAddress;\r
260 UINT64 PeiMemorySize;\r
261 UINT64 TotalReservedMemorySize;\r
262 UINT64 MemoryRangeEnd;\r
263 EFI_PHYSICAL_ADDRESS HighAddress; \r
264 EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob;\r
265 EFI_HOB_RESOURCE_DESCRIPTOR *NextResourceHob;\r
266 EFI_HOB_RESOURCE_DESCRIPTOR *CurrentResourceHob;\r
267 EFI_PEI_HOB_POINTERS CurrentHob;\r
268 EFI_PEI_HOB_POINTERS Hob;\r
269 EFI_PEI_HOB_POINTERS NextHob;\r
9bfb4940 270 EFI_HOB_MEMORY_ALLOCATION *MemoryHob;\r
54ea99a7 271 //\r
272 // Initialize Local Variables\r
273 //\r
274 CurrentResourceHob = NULL;\r
275 ResourceHob = NULL;\r
276 NextResourceHob = NULL;\r
54ea99a7 277 HighAddress = 0;\r
278 TopLoadingAddress = 0;\r
279 MemoryRangeEnd = 0;\r
280 CurrentHob.Raw = PrivateData->HobList.Raw;\r
281 PeiMemorySize = PrivateData->PhysicalMemoryLength;\r
282 //\r
283 // The top reserved memory include 3 parts: the topest range is for DXE core initialization with the size MINIMUM_INITIAL_MEMORY_SIZE\r
284 // then RuntimeCodePage range and Boot time code range.\r
285 // \r
e18fa167 286 TotalReservedMemorySize = MINIMUM_INITIAL_MEMORY_SIZE + EFI_PAGES_TO_SIZE(PcdGet32(PcdLoadFixAddressRuntimeCodePageNumber));\r
287 TotalReservedMemorySize+= EFI_PAGES_TO_SIZE(PcdGet32(PcdLoadFixAddressBootTimeCodePageNumber)) ; \r
54ea99a7 288 //\r
289 // PEI memory range lies below the top reserved memory\r
290 // \r
291 TotalReservedMemorySize += PeiMemorySize;\r
e18fa167 292 \r
852081fc 293 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: PcdLoadFixAddressRuntimeCodePageNumber= 0x%x.\n", PcdGet32(PcdLoadFixAddressRuntimeCodePageNumber)));\r
294 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: PcdLoadFixAddressBootTimeCodePageNumber= 0x%x.\n", PcdGet32(PcdLoadFixAddressBootTimeCodePageNumber)));\r
295 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: PcdLoadFixAddressPeiCodePageNumber= 0x%x.\n", PcdGet32(PcdLoadFixAddressPeiCodePageNumber))); \r
296 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: Total Reserved Memory Size = 0x%lx.\n", TotalReservedMemorySize));\r
54ea99a7 297 //\r
298 // Loop through the system memory typed hob to merge the adjacent memory range \r
299 //\r
300 for (Hob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB(Hob)) {\r
301 // \r
302 // See if this is a resource descriptor HOB \r
303 //\r
304 if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
305 \r
306 ResourceHob = Hob.ResourceDescriptor; \r
307 //\r
308 // If range described in this hob is not system memory or heigher than MAX_ADDRESS, ignored.\r
309 //\r
63e70348 310 if (ResourceHob->ResourceType != EFI_RESOURCE_SYSTEM_MEMORY ||\r
54ea99a7 311 ResourceHob->PhysicalStart + ResourceHob->ResourceLength > MAX_ADDRESS) {\r
312 continue;\r
313 } \r
314 \r
315 for (NextHob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(NextHob); NextHob.Raw = GET_NEXT_HOB(NextHob)) { \r
316 if (NextHob.Raw == Hob.Raw){\r
317 continue;\r
318 } \r
319 //\r
320 // See if this is a resource descriptor HOB\r
321 //\r
322 if (GET_HOB_TYPE (NextHob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
323 \r
324 NextResourceHob = NextHob.ResourceDescriptor;\r
325 //\r
326 // test if range described in this NextResourceHob is system memory and have the same attribute.\r
327 // Note: Here is a assumption that system memory should always be healthy even without test.\r
328 // \r
329 if (NextResourceHob->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY &&\r
330 (((NextResourceHob->ResourceAttribute^ResourceHob->ResourceAttribute)&(~EFI_RESOURCE_ATTRIBUTE_TESTED)) == 0)){\r
331 \r
332 //\r
333 // See if the memory range described in ResourceHob and NextResourceHob is adjacent\r
334 //\r
335 if ((ResourceHob->PhysicalStart <= NextResourceHob->PhysicalStart && \r
336 ResourceHob->PhysicalStart + ResourceHob->ResourceLength >= NextResourceHob->PhysicalStart)|| \r
337 (ResourceHob->PhysicalStart >= NextResourceHob->PhysicalStart&&\r
338 ResourceHob->PhysicalStart <= NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength)) {\r
339 \r
340 MemoryRangeEnd = ((ResourceHob->PhysicalStart + ResourceHob->ResourceLength)>(NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength)) ?\r
341 (ResourceHob->PhysicalStart + ResourceHob->ResourceLength):(NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength);\r
342 \r
343 ResourceHob->PhysicalStart = (ResourceHob->PhysicalStart < NextResourceHob->PhysicalStart) ? \r
344 ResourceHob->PhysicalStart : NextResourceHob->PhysicalStart;\r
345 \r
346 \r
347 ResourceHob->ResourceLength = (MemoryRangeEnd - ResourceHob->PhysicalStart);\r
348 \r
349 ResourceHob->ResourceAttribute = ResourceHob->ResourceAttribute & (~EFI_RESOURCE_ATTRIBUTE_TESTED);\r
350 //\r
351 // Delete the NextResourceHob by marking it as unused.\r
352 //\r
353 GET_HOB_TYPE (NextHob) = EFI_HOB_TYPE_UNUSED;\r
354 \r
355 }\r
356 }\r
357 } \r
358 }\r
359 } \r
360 }\r
9bfb4940 361 //\r
362 // Some platform is already allocated pages before the HOB re-org. Here to build dedicated resource HOB to describe\r
363 // the allocated memory range\r
364 //\r
365 for (Hob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB(Hob)) {\r
366 // \r
367 // See if this is a memory allocation HOB \r
368 //\r
369 if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_MEMORY_ALLOCATION) {\r
370 MemoryHob = Hob.MemoryAllocation;\r
371 for (NextHob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(NextHob); NextHob.Raw = GET_NEXT_HOB(NextHob)) {\r
372 //\r
373 // See if this is a resource descriptor HOB\r
374 //\r
375 if (GET_HOB_TYPE (NextHob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
376 NextResourceHob = NextHob.ResourceDescriptor;\r
377 //\r
378 // If range described in this hob is not system memory or heigher than MAX_ADDRESS, ignored.\r
379 //\r
63e70348 380 if (NextResourceHob->ResourceType != EFI_RESOURCE_SYSTEM_MEMORY || NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength > MAX_ADDRESS) {\r
9bfb4940 381 continue;\r
382 }\r
383 //\r
384 // If the range describe in memory allocation HOB belongs to the memroy range described by the resource hob\r
385 // \r
386 if (MemoryHob->AllocDescriptor.MemoryBaseAddress >= NextResourceHob->PhysicalStart && \r
387 MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength <= NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength) {\r
388 //\r
389 // Build seperate resource hob for this allocated range\r
390 // \r
391 if (MemoryHob->AllocDescriptor.MemoryBaseAddress > NextResourceHob->PhysicalStart) {\r
392 BuildResourceDescriptorHob (\r
393 EFI_RESOURCE_SYSTEM_MEMORY, \r
394 NextResourceHob->ResourceAttribute,\r
395 NextResourceHob->PhysicalStart, \r
396 (MemoryHob->AllocDescriptor.MemoryBaseAddress - NextResourceHob->PhysicalStart) \r
397 );\r
398 }\r
399 if (MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength < NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength) {\r
400 BuildResourceDescriptorHob (\r
401 EFI_RESOURCE_SYSTEM_MEMORY, \r
402 NextResourceHob->ResourceAttribute,\r
403 MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength, \r
404 (NextResourceHob->PhysicalStart + NextResourceHob->ResourceLength -(MemoryHob->AllocDescriptor.MemoryBaseAddress + MemoryHob->AllocDescriptor.MemoryLength)) \r
405 );\r
406 }\r
407 NextResourceHob->PhysicalStart = MemoryHob->AllocDescriptor.MemoryBaseAddress;\r
408 NextResourceHob->ResourceLength = MemoryHob->AllocDescriptor.MemoryLength;\r
409 break;\r
410 }\r
411 }\r
412 }\r
413 }\r
414 }\r
415\r
54ea99a7 416 //\r
417 // Try to find and validate the TOP address.\r
418 // \r
852081fc 419 if ((INT64)PcdGet64(PcdLoadModuleAtFixAddressEnable) > 0 ) {\r
54ea99a7 420 //\r
421 // The LMFA feature is enabled as load module at fixed absolute address.\r
422 //\r
852081fc 423 TopLoadingAddress = (EFI_PHYSICAL_ADDRESS)PcdGet64(PcdLoadModuleAtFixAddressEnable);\r
54ea99a7 424 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: Loading module at fixed absolute address.\n"));\r
425 //\r
426 // validate the Address. Loop the resource descriptor HOB to make sure the address is in valid memory range\r
427 //\r
428 if ((TopLoadingAddress & EFI_PAGE_MASK) != 0) {\r
852081fc 429 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED ERROR:Top Address 0x%lx is invalid since top address should be page align. \n", TopLoadingAddress)); \r
54ea99a7 430 ASSERT (FALSE); \r
431 }\r
432 //\r
433 // Search for a memory region that is below MAX_ADDRESS and in which TopLoadingAddress lies \r
434 //\r
435 for (Hob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB(Hob)) {\r
436 //\r
437 // See if this is a resource descriptor HOB\r
438 //\r
439 if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
440\r
441 ResourceHob = Hob.ResourceDescriptor;\r
442 //\r
443 // See if this resource descrior HOB describes tested system memory below MAX_ADDRESS\r
444 // \r
445 if (ResourceHob->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY &&\r
446 ResourceHob->PhysicalStart + ResourceHob->ResourceLength <= MAX_ADDRESS) {\r
447 //\r
448 // See if Top address specified by user is valid.\r
449 //\r
450 if (ResourceHob->PhysicalStart + TotalReservedMemorySize < TopLoadingAddress && \r
9bfb4940 451 (ResourceHob->PhysicalStart + ResourceHob->ResourceLength - MINIMUM_INITIAL_MEMORY_SIZE) >= TopLoadingAddress && \r
452 PeiLoadFixAddressIsMemoryRangeAvailable(PrivateData, ResourceHob)) {\r
54ea99a7 453 CurrentResourceHob = ResourceHob; \r
454 CurrentHob = Hob;\r
455 break;\r
9bfb4940 456 }\r
54ea99a7 457 }\r
458 } \r
459 } \r
460 if (CurrentResourceHob != NULL) {\r
852081fc 461 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO:Top Address 0x%lx is valid \n", TopLoadingAddress));\r
54ea99a7 462 TopLoadingAddress += MINIMUM_INITIAL_MEMORY_SIZE; \r
463 } else {\r
852081fc 464 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED ERROR:Top Address 0x%lx is invalid \n", TopLoadingAddress)); \r
54ea99a7 465 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED ERROR:The recommended Top Address for the platform is: \n")); \r
466 //\r
467 // Print the recomended Top address range.\r
468 // \r
469 for (Hob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB(Hob)) {\r
470 //\r
471 // See if this is a resource descriptor HOB\r
472 //\r
473 if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
474 \r
475 ResourceHob = Hob.ResourceDescriptor;\r
476 //\r
477 // See if this resource descrior HOB describes tested system memory below MAX_ADDRESS\r
478 // \r
479 if (ResourceHob->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY &&\r
480 ResourceHob->PhysicalStart + ResourceHob->ResourceLength <= MAX_ADDRESS) {\r
481 //\r
482 // See if Top address specified by user is valid.\r
483 //\r
9bfb4940 484 if (ResourceHob->ResourceLength > TotalReservedMemorySize && PeiLoadFixAddressIsMemoryRangeAvailable(PrivateData, ResourceHob)) {\r
852081fc 485 DEBUG ((EFI_D_INFO, "(0x%lx, 0x%lx)\n", \r
54ea99a7 486 (ResourceHob->PhysicalStart + TotalReservedMemorySize -MINIMUM_INITIAL_MEMORY_SIZE), \r
487 (ResourceHob->PhysicalStart + ResourceHob->ResourceLength -MINIMUM_INITIAL_MEMORY_SIZE) \r
488 )); \r
489 }\r
490 }\r
491 }\r
492 } \r
493 //\r
494 // Assert here \r
495 //\r
9bfb4940 496 ASSERT (FALSE); \r
497 return; \r
54ea99a7 498 } \r
499 } else {\r
500 //\r
501 // The LMFA feature is enabled as load module at fixed offset relative to TOLM\r
502 // Parse the Hob list to find the topest available memory. Generally it is (TOLM - TSEG)\r
503 //\r
504 //\r
505 // Search for a tested memory region that is below MAX_ADDRESS\r
506 //\r
507 for (Hob.Raw = PrivateData->HobList.Raw; !END_OF_HOB_LIST(Hob); Hob.Raw = GET_NEXT_HOB(Hob)) {\r
508 //\r
509 // See if this is a resource descriptor HOB \r
510 //\r
511 if (GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
512 \r
513 ResourceHob = Hob.ResourceDescriptor; \r
514 //\r
515 // See if this resource descrior HOB describes tested system memory below MAX_ADDRESS\r
516 //\r
517 if (ResourceHob->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY && \r
518 ResourceHob->PhysicalStart + ResourceHob->ResourceLength <= MAX_ADDRESS &&\r
9bfb4940 519 ResourceHob->ResourceLength > TotalReservedMemorySize && PeiLoadFixAddressIsMemoryRangeAvailable(PrivateData, ResourceHob)) {\r
54ea99a7 520 //\r
521 // See if this is the highest largest system memory region below MaxAddress\r
522 //\r
523 if (ResourceHob->PhysicalStart > HighAddress) {\r
524 CurrentResourceHob = ResourceHob;\r
525 CurrentHob = Hob;\r
526 HighAddress = CurrentResourceHob->PhysicalStart;\r
527 }\r
528 }\r
529 } \r
530 }\r
531 if (CurrentResourceHob == NULL) {\r
532 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED ERROR:The System Memory is too small\n")); \r
533 //\r
534 // Assert here \r
535 //\r
9bfb4940 536 ASSERT (FALSE);\r
537 return; \r
54ea99a7 538 } else {\r
539 TopLoadingAddress = CurrentResourceHob->PhysicalStart + CurrentResourceHob->ResourceLength ; \r
540 } \r
541 }\r
542 \r
543 if (CurrentResourceHob != NULL) {\r
544 //\r
9bfb4940 545 // rebuild resource HOB for PEI memmory and reserved memory\r
54ea99a7 546 //\r
547 BuildResourceDescriptorHob (\r
9bfb4940 548 EFI_RESOURCE_SYSTEM_MEMORY, \r
54ea99a7 549 (\r
550 EFI_RESOURCE_ATTRIBUTE_PRESENT |\r
551 EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r
552 EFI_RESOURCE_ATTRIBUTE_TESTED |\r
553 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r
554 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r
555 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r
556 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE\r
557 ),\r
9bfb4940 558 (TopLoadingAddress - TotalReservedMemorySize), \r
559 TotalReservedMemorySize \r
54ea99a7 560 );\r
561 //\r
9bfb4940 562 // rebuild resource for the remain memory if necessary\r
54ea99a7 563 //\r
564 if (CurrentResourceHob->PhysicalStart < TopLoadingAddress - TotalReservedMemorySize) {\r
565 BuildResourceDescriptorHob (\r
9bfb4940 566 EFI_RESOURCE_SYSTEM_MEMORY, \r
54ea99a7 567 (\r
568 EFI_RESOURCE_ATTRIBUTE_PRESENT |\r
569 EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r
570 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r
571 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r
572 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r
573 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE\r
574 ),\r
9bfb4940 575 CurrentResourceHob->PhysicalStart, \r
576 (TopLoadingAddress - TotalReservedMemorySize - CurrentResourceHob->PhysicalStart) \r
54ea99a7 577 );\r
578 }\r
579 if (CurrentResourceHob->PhysicalStart + CurrentResourceHob->ResourceLength > TopLoadingAddress ) {\r
580 BuildResourceDescriptorHob (\r
581 EFI_RESOURCE_SYSTEM_MEMORY, \r
582 (\r
583 EFI_RESOURCE_ATTRIBUTE_PRESENT |\r
584 EFI_RESOURCE_ATTRIBUTE_INITIALIZED |\r
585 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |\r
586 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |\r
587 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |\r
588 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE\r
589 ),\r
590 TopLoadingAddress, \r
591 (CurrentResourceHob->PhysicalStart + CurrentResourceHob->ResourceLength - TopLoadingAddress) \r
592 );\r
593 }\r
594 //\r
595 // Delete CurrentHob by marking it as unused since the the memory range described by is rebuilt.\r
596 //\r
597 GET_HOB_TYPE (CurrentHob) = EFI_HOB_TYPE_UNUSED; \r
598 }\r
599\r
600 //\r
601 // Cache the top address for Loading Module at Fixed Address feature\r
602 //\r
603 PrivateData->LoadModuleAtFixAddressTopAddress = TopLoadingAddress - MINIMUM_INITIAL_MEMORY_SIZE;\r
852081fc 604 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: Top address = 0x%lx\n", PrivateData->LoadModuleAtFixAddressTopAddress)); \r
54ea99a7 605 //\r
606 // reinstall the PEI memory relative to TopLoadingAddress\r
607 //\r
608 PrivateData->PhysicalMemoryBegin = TopLoadingAddress - TotalReservedMemorySize;\r
609 PrivateData->FreePhysicalMemoryTop = PrivateData->PhysicalMemoryBegin + PeiMemorySize;\r
610}\r
0f9ebb32
LG		 611\r
612/**\r
613 This routine is invoked in switch stack as PeiCore Entry.\r
614\r
615 @param SecCoreData Points to a data structure containing information about the PEI core's operating\r
616 environment, such as the size and location of temporary RAM, the stack location and\r
617 the BFV location.\r
618 @param Private Pointer to old core data that is used to initialize the\r
619 core's data areas.\r
620**/\r
621VOID\r
622EFIAPI\r
623PeiCoreEntry (\r
624 IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r
625 IN PEI_CORE_INSTANCE *Private\r
626 )\r
627{\r
628 //\r
629 // Entry PEI Phase 2\r
630 //\r
631 PeiCore (SecCoreData, NULL, Private);\r
632}\r
633\r
b1f6a7c6 634/**\r
192f6d4c 635 Conduct PEIM dispatch.\r
636\r
b1f6a7c6 637 @param SecCoreData Points to a data structure containing information about the PEI core's operating\r
5aae0aa7 638 environment, such as the size and location of temporary RAM, the stack location and\r
639 the BFV location.\r
b1f6a7c6 640 @param Private Pointer to the private data passed in from caller\r
192f6d4c 641\r
b1f6a7c6 642**/\r
643VOID\r
644PeiDispatcher (\r
645 IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r
646 IN PEI_CORE_INSTANCE *Private\r
647 )\r
192f6d4c 648{\r
b0d803fe 649 EFI_STATUS Status;\r
650 UINT32 Index1;\r
651 UINT32 Index2;\r
6c7a807a 652 CONST EFI_PEI_SERVICES **PeiServices;\r
b0d803fe 653 EFI_PEI_FILE_HANDLE PeimFileHandle;\r
654 UINTN FvCount;\r
655 UINTN PeimCount;\r
656 UINT32 AuthenticationState;\r
657 EFI_PHYSICAL_ADDRESS EntryPoint;\r
797a9d67 658 EFI_PEIM_ENTRY_POINT2 PeimEntryPoint;\r
b0d803fe 659 UINTN SaveCurrentPeimCount;\r
1053e0c5 660 UINTN SaveCurrentFvCount;\r
b0d803fe 661 EFI_PEI_FILE_HANDLE SaveCurrentFileHandle;\r
797a9d67 662 PEIM_FILE_HANDLE_EXTENDED_DATA ExtendedData;\r
d0a3ead2 663 EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI *TemporaryRamSupportPpi;\r
ef05e063 664 UINT64 NewStackSize;\r
18d3e280 665 UINTN HeapTemporaryRamSize;\r
0f9ebb32 666 EFI_PHYSICAL_ADDRESS BaseOfNewHeap;\r
ef05e063 667 EFI_PHYSICAL_ADDRESS TopOfNewStack;\r
668 EFI_PHYSICAL_ADDRESS TopOfOldStack;\r
669 EFI_PHYSICAL_ADDRESS TemporaryRamBase;\r
670 UINTN TemporaryRamSize;\r
0f9ebb32
LG		 671 UINTN TemporaryStackSize;\r
672 VOID *TemporaryStackBase;\r
673 UINTN PeiTemporaryRamSize;\r
674 VOID *PeiTemporaryRamBase;\r
ef05e063 675 UINTN StackOffset;\r
676 BOOLEAN StackOffsetPositive;\r
0f9ebb32
LG		 677 EFI_PHYSICAL_ADDRESS HoleMemBase;\r
678 UINTN HoleMemSize;\r
288f9b38 679 EFI_FV_FILE_INFO FvFileInfo;\r
3b428ade 680 PEI_CORE_FV_HANDLE *CoreFvHandle;\r
54ea99a7 681 VOID *LoadFixPeiCodeBegin;\r
0f9ebb32
LG		 682 EFI_PHYSICAL_ADDRESS TempBase1;\r
683 UINTN TempSize1;\r
684 EFI_PHYSICAL_ADDRESS TempBase2;\r
685 UINTN TempSize2;\r
686 UINTN Index;\r
687 \r
4140a663 688 PeiServices = (CONST EFI_PEI_SERVICES **) &Private->Ps;\r
b0d803fe 689 PeimEntryPoint = NULL;\r
690 PeimFileHandle = NULL;\r
288f9b38 691 EntryPoint = 0;\r
b0d803fe 692\r
5d7f3126 693 if ((Private->PeiMemoryInstalled) && (Private->HobList.HandoffInformationTable->BootMode != BOOT_ON_S3_RESUME || PcdGetBool (PcdShadowPeimOnS3Boot))) {\r
b0d803fe 694 //\r
695 // Once real memory is available, shadow the RegisterForShadow modules. And meanwhile\r
696 // update the modules' status from PEIM_STATE_REGISITER_FOR_SHADOW to PEIM_STATE_DONE.\r
697 //\r
698 SaveCurrentPeimCount = Private->CurrentPeimCount;\r
1053e0c5 699 SaveCurrentFvCount = Private->CurrentPeimFvCount;\r
b0d803fe 700 SaveCurrentFileHandle = Private->CurrentFileHandle;\r
701\r
1053e0c5 702 for (Index1 = 0; Index1 <= SaveCurrentFvCount; Index1++) {\r
fe781940 703 for (Index2 = 0; (Index2 < PcdGet32 (PcdPeiCoreMaxPeimPerFv)) && (Private->Fv[Index1].FvFileHandles[Index2] != NULL); Index2++) {\r
b0d803fe 704 if (Private->Fv[Index1].PeimState[Index2] == PEIM_STATE_REGISITER_FOR_SHADOW) {\r
58dcdada 705 PeimFileHandle = Private->Fv[Index1].FvFileHandles[Index2];\r
b0d803fe 706 Status = PeiLoadImage (\r
4140a663 707 (CONST EFI_PEI_SERVICES **) &Private->Ps,\r
58dcdada 708 PeimFileHandle,\r
341a658f 709 PEIM_STATE_REGISITER_FOR_SHADOW,\r
58dcdada 710 &EntryPoint,\r
b0d803fe 711 &AuthenticationState\r
712 );\r
713 if (Status == EFI_SUCCESS) {\r
714 //\r
715 // PEIM_STATE_REGISITER_FOR_SHADOW move to PEIM_STATE_DONE\r
716 //\r
717 Private->Fv[Index1].PeimState[Index2]++;\r
1053e0c5 718 Private->CurrentFileHandle = PeimFileHandle;\r
58dcdada 719 Private->CurrentPeimFvCount = Index1;\r
720 Private->CurrentPeimCount = Index2;\r
b0d803fe 721 //\r
722 // Call the PEIM entry point\r
723 //\r
797a9d67 724 PeimEntryPoint = (EFI_PEIM_ENTRY_POINT2)(UINTN)EntryPoint;\r
58dcdada 725\r
087e13cb 726 PERF_START (PeimFileHandle, "PEIM", NULL, 0);\r
4140a663 727 PeimEntryPoint(PeimFileHandle, (const EFI_PEI_SERVICES **) &Private->Ps);\r
087e13cb 728 PERF_END (PeimFileHandle, "PEIM", NULL, 0);\r
58dcdada 729 }\r
730\r
b0d803fe 731 //\r
732 // Process the Notify list and dispatch any notifies for\r
733 // newly installed PPIs.\r
734 //\r
735 ProcessNotifyList (Private);\r
736 }\r
737 }\r
738 }\r
58dcdada 739 Private->CurrentFileHandle = SaveCurrentFileHandle;\r
740 Private->CurrentPeimFvCount = SaveCurrentFvCount;\r
741 Private->CurrentPeimCount = SaveCurrentPeimCount;\r
b0d803fe 742 }\r
192f6d4c 743\r
744 //\r
745 // This is the main dispatch loop. It will search known FVs for PEIMs and\r
746 // attempt to dispatch them. If any PEIM gets dispatched through a single\r
747 // pass of the dispatcher, it will start over from the Bfv again to see\r
748 // if any new PEIMs dependencies got satisfied. With a well ordered\r
749 // FV where PEIMs are found in the order their dependencies are also\r
750 // satisfied, this dipatcher should run only once.\r
751 //\r
b0d803fe 752 do {\r
82b8c8df 753 //\r
754 // In case that reenter PeiCore happens, the last pass record is still available. \r
755 //\r
756 if (!Private->PeimDispatcherReenter) {\r
757 Private->PeimNeedingDispatch = FALSE;\r
758 Private->PeimDispatchOnThisPass = FALSE;\r
759 } else {\r
760 Private->PeimDispatcherReenter = FALSE;\r
761 }\r
762 \r
b0d803fe 763 for (FvCount = Private->CurrentPeimFvCount; FvCount < Private->FvCount; FvCount++) {\r
3b428ade 764 CoreFvHandle = FindNextCoreFvHandle (Private, FvCount);\r
765 ASSERT (CoreFvHandle != NULL);\r
766 \r
2a00326e 767 //\r
3b428ade 768 // If the FV has corresponding EFI_PEI_FIRMWARE_VOLUME_PPI instance, then dispatch it.\r
2a00326e 769 //\r
3b428ade 770 if (CoreFvHandle->FvPpi == NULL) {\r
771 continue;\r
772 }\r
773 \r
774 Private->CurrentPeimFvCount = FvCount;\r
192f6d4c 775\r
b0d803fe 776 if (Private->CurrentPeimCount == 0) {\r
777 //\r
778 // When going through each FV, at first, search Apriori file to\r
58dcdada 779 // reorder all PEIMs to ensure the PEIMs in Apriori file to get\r
b0d803fe 780 // dispatch at first.\r
781 //\r
3b428ade 782 DiscoverPeimsAndOrderWithApriori (Private, CoreFvHandle);\r
b0d803fe 783 }\r
192f6d4c 784\r
785 //\r
b0d803fe 786 // Start to dispatch all modules within the current Fv.\r
192f6d4c 787 //\r
58dcdada 788 for (PeimCount = Private->CurrentPeimCount;\r
fe781940 789 (PeimCount < PcdGet32 (PcdPeiCoreMaxPeimPerFv)) && (Private->CurrentFvFileHandles[PeimCount] != NULL);\r
b0d803fe 790 PeimCount++) {\r
791 Private->CurrentPeimCount = PeimCount;\r
792 PeimFileHandle = Private->CurrentFileHandle = Private->CurrentFvFileHandles[PeimCount];\r
793\r
794 if (Private->Fv[FvCount].PeimState[PeimCount] == PEIM_STATE_NOT_DISPATCHED) {\r
795 if (!DepexSatisfied (Private, PeimFileHandle, PeimCount)) {\r
82b8c8df 796 Private->PeimNeedingDispatch = TRUE;\r
b0d803fe 797 } else {\r
3b428ade 798 Status = CoreFvHandle->FvPpi->GetFileInfo (CoreFvHandle->FvPpi, PeimFileHandle, &FvFileInfo);\r
288f9b38
LG		 799 ASSERT_EFI_ERROR (Status);\r
800 if (FvFileInfo.FileType == EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) {\r
801 //\r
802 // For Fv type file, Produce new FV PPI and FV hob\r
803 //\r
c7935105
SZ		 804 Status = ProcessFvFile (Private, &Private->Fv[FvCount], PeimFileHandle);\r
805 if (Status == EFI_SUCCESS) {\r
806 //\r
807 // PEIM_STATE_NOT_DISPATCHED move to PEIM_STATE_DISPATCHED\r
808 //\r
809 Private->Fv[FvCount].PeimState[PeimCount]++;\r
810 Private->PeimDispatchOnThisPass = TRUE;\r
811 }\r
288f9b38
LG		 812 } else {\r
813 //\r
814 // For PEIM driver, Load its entry point\r
815 //\r
816 Status = PeiLoadImage (\r
58dcdada 817 PeiServices,\r
818 PeimFileHandle,\r
341a658f 819 PEIM_STATE_NOT_DISPATCHED,\r
58dcdada 820 &EntryPoint,\r
288f9b38
LG		 821 &AuthenticationState\r
822 );\r
c7935105 823 if (Status == EFI_SUCCESS) {\r
b0d803fe 824 //\r
c7935105
SZ		 825 // The PEIM has its dependencies satisfied, and its entry point\r
826 // has been found, so invoke it.\r
b0d803fe 827 //\r
c7935105 828 PERF_START (PeimFileHandle, "PEIM", NULL, 0);\r
58dcdada 829\r
c7935105
SZ		 830 ExtendedData.Handle = (EFI_HANDLE)PeimFileHandle;\r
831\r
832 REPORT_STATUS_CODE_WITH_EXTENDED_DATA (\r
833 EFI_PROGRESS_CODE,\r
834 (EFI_SOFTWARE_PEI_CORE | EFI_SW_PC_INIT_BEGIN),\r
835 (VOID *)(&ExtendedData),\r
836 sizeof (ExtendedData)\r
837 );\r
838\r
839 Status = VerifyPeim (Private, CoreFvHandle->FvHandle, PeimFileHandle, AuthenticationState);\r
840 if (Status != EFI_SECURITY_VIOLATION) {\r
841 //\r
842 // PEIM_STATE_NOT_DISPATCHED move to PEIM_STATE_DISPATCHED\r
843 //\r
844 Private->Fv[FvCount].PeimState[PeimCount]++;\r
288f9b38
LG		 845 //\r
846 // Call the PEIM entry point for PEIM driver\r
847 //\r
797a9d67 848 PeimEntryPoint = (EFI_PEIM_ENTRY_POINT2)(UINTN)EntryPoint;\r
849 PeimEntryPoint (PeimFileHandle, (const EFI_PEI_SERVICES **) PeiServices);\r
c7935105 850 Private->PeimDispatchOnThisPass = TRUE;\r
288f9b38 851 }\r
797a9d67 852\r
c7935105
SZ		 853 REPORT_STATUS_CODE_WITH_EXTENDED_DATA (\r
854 EFI_PROGRESS_CODE,\r
855 (EFI_SOFTWARE_PEI_CORE | EFI_SW_PC_INIT_END),\r
856 (VOID *)(&ExtendedData),\r
857 sizeof (ExtendedData)\r
858 );\r
859 PERF_END (PeimFileHandle, "PEIM", NULL, 0);\r
b0d803fe 860\r
c7935105 861 }\r
58dcdada 862 }\r
863\r
864 if (Private->SwitchStackSignal) {\r
a7715e73 865 //\r
3d4d0c34 866 // Before switch stack from temporary memory to permenent memory, caculate the heap and stack\r
a7715e73 867 // usage in temporary memory for debuging.\r
868 //\r
869 DEBUG_CODE_BEGIN ();\r
96317468 870 UINT32 *StackPointer;\r
a7715e73 871 \r
96317468 872 for (StackPointer = (UINT32*)SecCoreData->StackBase;\r
873 (StackPointer < (UINT32*)((UINTN)SecCoreData->StackBase + SecCoreData->StackSize)) \\r
a7715e73 874 && (*StackPointer == INIT_CAR_VALUE);\r
875 StackPointer ++);\r
876 \r
ef05e063 877 DEBUG ((EFI_D_INFO, "Temp Stack : BaseAddress=0x%p Length=0x%X\n", SecCoreData->StackBase, (UINT32)SecCoreData->StackSize));\r
878 DEBUG ((EFI_D_INFO, "Temp Heap : BaseAddress=0x%p Length=0x%X\n", Private->HobList.Raw, (UINT32)((UINTN) Private->HobList.HandoffInformationTable->EfiFreeMemoryBottom - (UINTN) Private->HobList.Raw)));\r
3d4d0c34 879 DEBUG ((EFI_D_INFO, "Total temporary memory: %d bytes.\n", (UINT32)SecCoreData->TemporaryRamSize));\r
880 DEBUG ((EFI_D_INFO, " temporary memory stack ever used: %d bytes.\n",\r
ef05e063 881 (UINT32)(SecCoreData->StackSize - ((UINTN) StackPointer - (UINTN)SecCoreData->StackBase))\r
a7715e73 882 ));\r
3d4d0c34 883 DEBUG ((EFI_D_INFO, " temporary memory heap used: %d bytes.\n",\r
ef05e063 884 (UINT32)((UINTN)Private->HobList.HandoffInformationTable->EfiFreeMemoryBottom - (UINTN)Private->HobList.Raw)\r
a7715e73 885 ));\r
886 DEBUG_CODE_END ();\r
887 \r
f73b3df8 888 if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0 && (Private->HobList.HandoffInformationTable->BootMode != BOOT_ON_S3_RESUME)) {\r
54ea99a7 889 //\r
890 // Loading Module at Fixed Address is enabled\r
891 //\r
ef05e063 892 PeiLoadFixAddressHook (Private);\r
893\r
4fb72076 894 //\r
ef05e063 895 // If Loading Module at Fixed Address is enabled, Allocating memory range for Pei code range.\r
4fb72076 896 //\r
897 LoadFixPeiCodeBegin = AllocatePages((UINTN)PcdGet32(PcdLoadFixAddressPeiCodePageNumber));\r
3978f5d9 898 DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: PeiCodeBegin = 0x%lX, PeiCodeTop= 0x%lX\n", (UINT64)(UINTN)LoadFixPeiCodeBegin, (UINT64)((UINTN)LoadFixPeiCodeBegin + PcdGet32(PcdLoadFixAddressPeiCodePageNumber) * EFI_PAGE_SIZE)));\r
54ea99a7 899 }\r
900 \r
a3a15d21 901 //\r
58dcdada 902 // Reserve the size of new stack at bottom of physical memory\r
a3a15d21 903 //\r
ef05e063 904 // The size of new stack in permenent memory must be the same size \r
905 // or larger than the size of old stack in temporary memory.\r
58dcdada 906 // But if new stack is smaller than the size of old stack, we also reserve\r
907 // the size of old stack at bottom of permenent memory.\r
908 //\r
ef05e063 909 NewStackSize = RShiftU64 (Private->PhysicalMemoryLength, 1);\r
910 NewStackSize = ALIGN_VALUE (NewStackSize, EFI_PAGE_SIZE);\r
911 NewStackSize = MIN (PcdGet32(PcdPeiCoreMaxPeiStackSize), NewStackSize);\r
912 DEBUG ((EFI_D_INFO, "Old Stack size %d, New stack size %d\n", (UINT32)SecCoreData->StackSize, (UINT32)NewStackSize));\r
913 ASSERT (NewStackSize >= SecCoreData->StackSize);\r
d74eeda8 914\r
58dcdada 915 //\r
ef05e063 916 // Caculate stack offset and heap offset between temporary memory and new permement \r
917 // memory seperately.\r
58dcdada 918 //\r
ef05e063 919 TopOfOldStack = (UINTN)SecCoreData->StackBase + SecCoreData->StackSize;\r
920 TopOfNewStack = Private->PhysicalMemoryBegin + NewStackSize;\r
ef05e063 921 if (TopOfNewStack >= TopOfOldStack) {\r
922 StackOffsetPositive = TRUE;\r
923 StackOffset = (UINTN)(TopOfNewStack - TopOfOldStack);\r
924 } else {\r
925 StackOffsetPositive = FALSE;\r
926 StackOffset = (UINTN)(TopOfOldStack - TopOfNewStack);\r
927 }\r
424b7c9f 928 Private->StackOffsetPositive = StackOffsetPositive;\r
929 Private->StackOffset = StackOffset;\r
ef05e063 930\r
192f6d4c 931 //\r
ef05e063 932 // Build Stack HOB that describes the permanent memory stack\r
192f6d4c 933 //\r
ef05e063 934 DEBUG ((EFI_D_INFO, "Stack Hob: BaseAddress=0x%lX Length=0x%lX\n", TopOfNewStack - NewStackSize, NewStackSize));\r
935 BuildStackHob (TopOfNewStack - NewStackSize, NewStackSize);\r
936\r
40f26b8f 937 //\r
ef05e063 938 // Cache information from SecCoreData into locals before SecCoreData is converted to a permanent memory address\r
40f26b8f 939 //\r
0f9ebb32
LG		 940 TemporaryRamBase = (EFI_PHYSICAL_ADDRESS)(UINTN)SecCoreData->TemporaryRamBase;\r
941 TemporaryRamSize = SecCoreData->TemporaryRamSize;\r
942 TemporaryStackSize = SecCoreData->StackSize;\r
943 TemporaryStackBase = SecCoreData->StackBase;\r
944 PeiTemporaryRamSize = SecCoreData->PeiTemporaryRamSize;\r
945 PeiTemporaryRamBase = SecCoreData->PeiTemporaryRamBase;\r
946 \r
192f6d4c 947 //\r
58dcdada 948 // TemporaryRamSupportPpi is produced by platform's SEC\r
192f6d4c 949 //\r
ef05e063 950 Status = PeiServicesLocatePpi (\r
58dcdada 951 &gEfiTemporaryRamSupportPpiGuid,\r
952 0,\r
953 NULL,\r
954 (VOID**)&TemporaryRamSupportPpi\r
955 );\r
58dcdada 956 if (!EFI_ERROR (Status)) {\r
0f9ebb32
LG		 957 //\r
958 // Heap Offset\r
959 //\r
960 BaseOfNewHeap = TopOfNewStack;\r
961 if (BaseOfNewHeap >= (UINTN)SecCoreData->PeiTemporaryRamBase) {\r
962 Private->HeapOffsetPositive = TRUE;\r
963 Private->HeapOffset = (UINTN)(BaseOfNewHeap - (UINTN)SecCoreData->PeiTemporaryRamBase);\r
964 } else {\r
965 Private->HeapOffsetPositive = FALSE;\r
966 Private->HeapOffset = (UINTN)((UINTN)SecCoreData->PeiTemporaryRamBase - BaseOfNewHeap);\r
967 }\r
6c8cfb07
SZ		 968\r
969 DEBUG ((EFI_D_INFO, "Heap Offset = 0x%lX Stack Offset = 0x%lX\n", (UINT64) Private->HeapOffset, (UINT64) Private->StackOffset));\r
970\r
0f9ebb32
LG		 971 //\r
972 // Caculate new HandOffTable and PrivateData address in permanent memory's stack\r
973 //\r
974 if (StackOffsetPositive) {\r
975 SecCoreData = (CONST EFI_SEC_PEI_HAND_OFF *)((UINTN)(VOID *)SecCoreData + StackOffset);\r
976 Private = (PEI_CORE_INSTANCE *)((UINTN)(VOID *)Private + StackOffset);\r
977 } else {\r
978 SecCoreData = (CONST EFI_SEC_PEI_HAND_OFF *)((UINTN)(VOID *)SecCoreData - StackOffset);\r
979 Private = (PEI_CORE_INSTANCE *)((UINTN)(VOID *)Private - StackOffset);\r
980 }\r
981\r
40f26b8f 982 //\r
ef05e063 983 // Temporary Ram Support PPI is provided by platform, it will copy \r
40f26b8f 984 // temporary memory to permenent memory and do stack switching.\r
ef05e063 985 // After invoking Temporary Ram Support PPI, the following code's \r
986 // stack is in permanent memory.\r
40f26b8f 987 //\r
58dcdada 988 TemporaryRamSupportPpi->TemporaryRamMigration (\r
ef05e063 989 PeiServices,\r
990 TemporaryRamBase,\r
991 (EFI_PHYSICAL_ADDRESS)(UINTN)(TopOfNewStack - TemporaryStackSize),\r
992 TemporaryRamSize\r
58dcdada 993 );\r
994\r
0f9ebb32
LG		 995 //\r
996 // Entry PEI Phase 2\r
997 //\r
998 PeiCore (SecCoreData, NULL, Private);\r
58dcdada 999 } else {\r
ffd332ca
LG		 1000 //\r
1001 // Migrate the PEI Services Table pointer from temporary RAM to permanent RAM.\r
1002 //\r
1003 MigratePeiServicesTablePointer ();\r
1004 \r
b414ea4b 1005 //\r
0f9ebb32 1006 // Heap Offset\r
b414ea4b 1007 //\r
0f9ebb32
LG		 1008 BaseOfNewHeap = TopOfNewStack;\r
1009 HoleMemBase = TopOfNewStack;\r
1010 HoleMemSize = TemporaryRamSize - PeiTemporaryRamSize - TemporaryStackSize;\r
1011 if (HoleMemSize != 0) {\r
9b8e61be
LG		 1012 //\r
1013 // Make sure HOB List start address is 8 byte alignment.\r
1014 //\r
1015 BaseOfNewHeap = ALIGN_VALUE (BaseOfNewHeap + HoleMemSize, 8);\r
0f9ebb32
LG		 1016 }\r
1017 if (BaseOfNewHeap >= (UINTN)SecCoreData->PeiTemporaryRamBase) {\r
1018 Private->HeapOffsetPositive = TRUE;\r
1019 Private->HeapOffset = (UINTN)(BaseOfNewHeap - (UINTN)SecCoreData->PeiTemporaryRamBase);\r
1020 } else {\r
1021 Private->HeapOffsetPositive = FALSE;\r
1022 Private->HeapOffset = (UINTN)((UINTN)SecCoreData->PeiTemporaryRamBase - BaseOfNewHeap);\r
1023 }\r
58dcdada 1024\r
6c8cfb07
SZ		 1025 DEBUG ((EFI_D_INFO, "Heap Offset = 0x%lX Stack Offset = 0x%lX\n", (UINT64) Private->HeapOffset, (UINT64) Private->StackOffset));\r
1026\r
0f9ebb32
LG		 1027 //\r
1028 // Migrate Heap\r
1029 //\r
18d3e280
LG		 1030 HeapTemporaryRamSize = (UINTN) (Private->HobList.HandoffInformationTable->EfiFreeMemoryBottom - Private->HobList.HandoffInformationTable->EfiMemoryBottom);\r
1031 ASSERT (BaseOfNewHeap + HeapTemporaryRamSize <= Private->FreePhysicalMemoryTop);\r
1032 CopyMem ((UINT8 *) (UINTN) BaseOfNewHeap, (UINT8 *) PeiTemporaryRamBase, HeapTemporaryRamSize);\r
0f9ebb32
LG		 1033 \r
1034 //\r
1035 // Migrate Stack\r
1036 //\r
1037 CopyMem ((UINT8 *) (UINTN) (TopOfNewStack - TemporaryStackSize), TemporaryStackBase, TemporaryStackSize);\r
1038 \r
1039 //\r
1040 // Copy Hole Range Data\r
1041 // Convert PPI from Hole. \r
1042 //\r
1043 if (HoleMemSize != 0) {\r
1044 //\r
1045 // Prepare Hole\r
1046 //\r
1047 if (PeiTemporaryRamBase < TemporaryStackBase) {\r
1048 TempBase1 = (EFI_PHYSICAL_ADDRESS) (UINTN) PeiTemporaryRamBase;\r
1049 TempSize1 = PeiTemporaryRamSize;\r
1050 TempBase2 = (EFI_PHYSICAL_ADDRESS) (UINTN) TemporaryStackBase;\r
1051 TempSize2 = TemporaryStackSize;\r
1052 } else {\r
1053 TempBase1 = (EFI_PHYSICAL_ADDRESS) (UINTN) TemporaryStackBase;\r
1054 TempSize1 = TemporaryStackSize;\r
1055 TempBase2 =(EFI_PHYSICAL_ADDRESS) (UINTN) PeiTemporaryRamBase;\r
1056 TempSize2 = PeiTemporaryRamSize;\r
1057 }\r
1058 if (TemporaryRamBase < TempBase1) {\r
1059 Private->HoleData[0].Base = TemporaryRamBase;\r
1060 Private->HoleData[0].Size = (UINTN) (TempBase1 - TemporaryRamBase);\r
1061 }\r
1062 if (TempBase1 + TempSize1 < TempBase2) {\r
1063 Private->HoleData[1].Base = TempBase1 + TempSize1;\r
1064 Private->HoleData[1].Size = (UINTN) (TempBase2 - TempBase1 - TempSize1);\r
1065 }\r
1066 if (TempBase2 + TempSize2 < TemporaryRamBase + TemporaryRamSize) {\r
1067 Private->HoleData[2].Base = TempBase2 + TempSize2;\r
1068 Private->HoleData[2].Size = (UINTN) (TemporaryRamBase + TemporaryRamSize - TempBase2 - TempSize2);\r
1069 }\r
1070 \r
1071 //\r
1072 // Copy Hole Range data.\r
1073 //\r
1074 for (Index = 0; Index < HOLE_MAX_NUMBER; Index ++) {\r
1075 if (Private->HoleData[Index].Size > 0) {\r
1076 if (HoleMemBase > Private->HoleData[Index].Base) {\r
1077 Private->HoleData[Index].OffsetPositive = TRUE;\r
1078 Private->HoleData[Index].Offset = (UINTN) (HoleMemBase - Private->HoleData[Index].Base);\r
1079 } else {\r
1080 Private->HoleData[Index].OffsetPositive = FALSE;\r
1081 Private->HoleData[Index].Offset = (UINTN) (Private->HoleData[Index].Base - HoleMemBase);\r
1082 }\r
1083 CopyMem ((VOID *) (UINTN) HoleMemBase, (VOID *) (UINTN) Private->HoleData[Index].Base, Private->HoleData[Index].Size);\r
1084 HoleMemBase = HoleMemBase + Private->HoleData[Index].Size;\r
1085 }\r
1086 }\r
1087 }\r
1088\r
1089 //\r
1090 // Switch new stack\r
1091 //\r
1092 SwitchStack (\r
1093 (SWITCH_STACK_ENTRY_POINT)(UINTN)PeiCoreEntry,\r
1094 (VOID *) SecCoreData,\r
1095 (VOID *) Private,\r
1096 (VOID *) (UINTN) TopOfNewStack\r
1097 );\r
1098 }\r
b0d803fe 1099\r
58dcdada 1100 //\r
1101 // Code should not come here\r
1102 //\r
ef05e063 1103 ASSERT (FALSE);\r
192f6d4c 1104 }\r
192f6d4c 1105\r
58dcdada 1106 //\r
1107 // Process the Notify list and dispatch any notifies for\r
1108 // newly installed PPIs.\r
1109 //\r
1110 ProcessNotifyList (Private);\r
1111\r
b0d803fe 1112 if ((Private->PeiMemoryInstalled) && (Private->Fv[FvCount].PeimState[PeimCount] == PEIM_STATE_REGISITER_FOR_SHADOW) && \\r
5d7f3126 1113 (Private->HobList.HandoffInformationTable->BootMode != BOOT_ON_S3_RESUME || PcdGetBool (PcdShadowPeimOnS3Boot))) {\r
b0d803fe 1114 //\r
58dcdada 1115 // If memory is availble we shadow images by default for performance reasons.\r
1116 // We call the entry point a 2nd time so the module knows it's shadowed.\r
b0d803fe 1117 //\r
1118 //PERF_START (PeiServices, L"PEIM", PeimFileHandle, 0);\r
e67ca95c 1119 ASSERT (PeimEntryPoint != NULL);\r
797a9d67 1120 PeimEntryPoint (PeimFileHandle, (const EFI_PEI_SERVICES **) PeiServices);\r
b0d803fe 1121 //PERF_END (PeiServices, L"PEIM", PeimFileHandle, 0);\r
58dcdada 1122\r
b0d803fe 1123 //\r
1124 // PEIM_STATE_REGISITER_FOR_SHADOW move to PEIM_STATE_DONE\r
1125 //\r
1126 Private->Fv[FvCount].PeimState[PeimCount]++;\r
192f6d4c 1127\r
192f6d4c 1128 //\r
b0d803fe 1129 // Process the Notify list and dispatch any notifies for\r
1130 // newly installed PPIs.\r
192f6d4c 1131 //\r
b0d803fe 1132 ProcessNotifyList (Private);\r
192f6d4c 1133 }\r
1134 }\r
1135 }\r
192f6d4c 1136 }\r
192f6d4c 1137\r
b0d803fe 1138 //\r
1139 // We set to NULL here to optimize the 2nd entry to this routine after\r
1140 // memory is found. This reprevents rescanning of the FV. We set to\r
1141 // NULL here so we start at the begining of the next FV\r
1142 //\r
1143 Private->CurrentFileHandle = NULL;\r
1144 Private->CurrentPeimCount = 0;\r
1145 //\r
1146 // Before walking through the next FV,Private->CurrentFvFileHandles[]should set to NULL\r
1147 //\r
fe781940 1148 SetMem (Private->CurrentFvFileHandles, sizeof (EFI_PEI_FILE_HANDLE) * PcdGet32 (PcdPeiCoreMaxPeimPerFv), 0);\r
192f6d4c 1149 }\r
1150\r
1151 //\r
58dcdada 1152 // Before making another pass, we should set Private->CurrentPeimFvCount =0 to go\r
b0d803fe 1153 // through all the FV.\r
192f6d4c 1154 //\r
b0d803fe 1155 Private->CurrentPeimFvCount = 0;\r
192f6d4c 1156\r
1157 //\r
58dcdada 1158 // PeimNeedingDispatch being TRUE means we found a PEIM that did not get\r
b0d803fe 1159 // dispatched. So we need to make another pass\r
192f6d4c 1160 //\r
58dcdada 1161 // PeimDispatchOnThisPass being TRUE means we dispatched a PEIM on this\r
b0d803fe 1162 // pass. If we did not dispatch a PEIM there is no point in trying again\r
1163 // as it will fail the next time too (nothing has changed).\r
192f6d4c 1164 //\r
82b8c8df 1165 } while (Private->PeimNeedingDispatch && Private->PeimDispatchOnThisPass);\r
192f6d4c 1166\r
192f6d4c 1167}\r
1168\r
b1f6a7c6 1169/**\r
192f6d4c 1170 Initialize the Dispatcher's data members\r
1171\r
b1f6a7c6 1172 @param PrivateData PeiCore's private data structure\r
1173 @param OldCoreData Old data from SecCore\r
192f6d4c 1174 NULL if being run in non-permament memory mode.\r
b1f6a7c6 1175 @param SecCoreData Points to a data structure containing information about the PEI core's operating\r
5aae0aa7 1176 environment, such as the size and location of temporary RAM, the stack location and\r
1177 the BFV location.\r
192f6d4c 1178\r
b1f6a7c6 1179 @return None.\r
192f6d4c 1180\r
b1f6a7c6 1181**/\r
1182VOID\r
1183InitializeDispatcherData (\r
1184 IN PEI_CORE_INSTANCE *PrivateData,\r
1185 IN PEI_CORE_INSTANCE *OldCoreData,\r
1186 IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData\r
1187 )\r
192f6d4c 1188{\r
192f6d4c 1189 if (OldCoreData == NULL) {\r
82b8c8df 1190 PrivateData->PeimDispatcherReenter = FALSE;\r
b0d803fe 1191 PeiInitializeFv (PrivateData, SecCoreData);\r
8e0e40ed 1192 } else {\r
7ec93917 1193 PeiReinitializeFv (PrivateData);\r
192f6d4c 1194 }\r
1195\r
1196 return;\r
1197}\r
1198\r
b1f6a7c6 1199/**\r
1200 This routine parses the Dependency Expression, if available, and\r
1201 decides if the module can be executed.\r
1202\r
1203\r
1204 @param Private PeiCore's private data structure\r
1205 @param FileHandle PEIM's file handle\r
1206 @param PeimCount Peim count in all dispatched PEIMs.\r
192f6d4c 1207\r
b1f6a7c6 1208 @retval TRUE Can be dispatched\r
1209 @retval FALSE Cannot be dispatched\r
1210\r
1211**/\r
192f6d4c 1212BOOLEAN\r
1213DepexSatisfied (\r
b0d803fe 1214 IN PEI_CORE_INSTANCE *Private,\r
1215 IN EFI_PEI_FILE_HANDLE FileHandle,\r
1216 IN UINTN PeimCount\r
192f6d4c 1217 )\r
192f6d4c 1218{\r
288f9b38
LG		 1219 EFI_STATUS Status;\r
1220 VOID *DepexData;\r
6a55eea3 1221 EFI_FV_FILE_INFO FileInfo;\r
b0d803fe 1222\r
6a55eea3 1223 Status = PeiServicesFfsGetFileInfo (FileHandle, &FileInfo);\r
1224 if (EFI_ERROR (Status)) {\r
1225 DEBUG ((DEBUG_DISPATCH, "Evaluate PEI DEPEX for FFS(Unknown)\n"));\r
1226 } else {\r
1227 DEBUG ((DEBUG_DISPATCH, "Evaluate PEI DEPEX for FFS(%g)\n", &FileInfo.FileName));\r
1228 }\r
1229 \r
b0d803fe 1230 if (PeimCount < Private->AprioriCount) {\r
1231 //\r
1232 // If its in the A priori file then we set Depex to TRUE\r
1233 //\r
6a55eea3 1234 DEBUG ((DEBUG_DISPATCH, " RESULT = TRUE (Apriori)\n"));\r
b0d803fe 1235 return TRUE;\r
1236 }\r
58dcdada 1237\r
288f9b38 1238 //\r
58dcdada 1239 // Depex section not in the encapsulated section.\r
288f9b38
LG		 1240 //\r
1241 Status = PeiServicesFfsFindSectionData (\r
1242 EFI_SECTION_PEI_DEPEX,\r
58dcdada 1243 FileHandle,\r
288f9b38
LG		 1244 (VOID **)&DepexData\r
1245 );\r
b0d803fe 1246\r
192f6d4c 1247 if (EFI_ERROR (Status)) {\r
b0d803fe 1248 //\r
1249 // If there is no DEPEX, assume the module can be executed\r
1250 //\r
6a55eea3 1251 DEBUG ((DEBUG_DISPATCH, " RESULT = TRUE (No DEPEX)\n"));\r
192f6d4c 1252 return TRUE;\r
1253 }\r
1254\r
1255 //\r
1256 // Evaluate a given DEPEX\r
1257 //\r
4140a663 1258 return PeimDispatchReadiness (&Private->Ps, DepexData);\r
192f6d4c 1259}\r
1260\r
14e8823a 1261/**\r
1262 This routine enable a PEIM to register itself to shadow when PEI Foundation\r
1263 discovery permanent memory.\r
1264\r
b1f6a7c6 1265 @param FileHandle File handle of a PEIM.\r
58dcdada 1266\r
b1f6a7c6 1267 @retval EFI_NOT_FOUND The file handle doesn't point to PEIM itself.\r
1268 @retval EFI_ALREADY_STARTED Indicate that the PEIM has been registered itself.\r
1269 @retval EFI_SUCCESS Successfully to register itself.\r
14e8823a 1270\r
58dcdada 1271**/\r
14e8823a 1272EFI_STATUS\r
1273EFIAPI\r
1274PeiRegisterForShadow (\r
1275 IN EFI_PEI_FILE_HANDLE FileHandle\r
1276 )\r
1277{\r
1278 PEI_CORE_INSTANCE *Private;\r
1279 Private = PEI_CORE_INSTANCE_FROM_PS_THIS (GetPeiServicesTablePointer ());\r
1280\r
1281 if (Private->CurrentFileHandle != FileHandle) {\r
1282 //\r
1283 // The FileHandle must be for the current PEIM\r
1284 //\r
1285 return EFI_NOT_FOUND;\r
1286 }\r
1287\r
1288 if (Private->Fv[Private->CurrentPeimFvCount].PeimState[Private->CurrentPeimCount] >= PEIM_STATE_REGISITER_FOR_SHADOW) {\r
1289 //\r
1290 // If the PEIM has already entered the PEIM_STATE_REGISTER_FOR_SHADOW or PEIM_STATE_DONE then it's already been started\r
1291 //\r
1292 return EFI_ALREADY_STARTED;\r
1293 }\r
58dcdada 1294\r
14e8823a 1295 Private->Fv[Private->CurrentPeimFvCount].PeimState[Private->CurrentPeimCount] = PEIM_STATE_REGISITER_FOR_SHADOW;\r
1296\r
1297 return EFI_SUCCESS;\r
1298}\r
1299\r
3b428ade 1300\r
341a658f 1301\r
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