2 EFI PEI Core dispatch services
4 Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 /// temporary memory is filled with this initial value during SEC phase
20 #define INIT_CAR_VALUE 0x5AA55AA5
23 EFI_STATUS_CODE_DATA DataHeader
;
25 } PEIM_FILE_HANDLE_EXTENDED_DATA
;
29 Discover all Peims and optional Apriori file in one FV. There is at most one
30 Apriori file in one FV.
33 @param Private Pointer to the private data passed in from caller
34 @param CoreFileHandle The instance of PEI_CORE_FV_HANDLE.
38 DiscoverPeimsAndOrderWithApriori (
39 IN PEI_CORE_INSTANCE
*Private
,
40 IN PEI_CORE_FV_HANDLE
*CoreFileHandle
44 EFI_PEI_FILE_HANDLE FileHandle
;
45 EFI_PEI_FILE_HANDLE AprioriFileHandle
;
52 EFI_PEI_FILE_HANDLE
*TempFileHandles
;
54 EFI_PEI_FIRMWARE_VOLUME_PPI
*FvPpi
;
55 EFI_FV_FILE_INFO FileInfo
;
57 FvPpi
= CoreFileHandle
->FvPpi
;
60 // Walk the FV and find all the PEIMs and the Apriori file.
62 AprioriFileHandle
= NULL
;
63 Private
->CurrentFvFileHandles
[0] = NULL
;
66 TempFileHandles
= Private
->FileHandles
;
67 FileGuid
= Private
->FileGuid
;
70 // If the current Fv has been scanned, directly get its cachable record.
72 if (Private
->Fv
[Private
->CurrentPeimFvCount
].ScanFv
) {
73 CopyMem (Private
->CurrentFvFileHandles
, Private
->Fv
[Private
->CurrentPeimFvCount
].FvFileHandles
, sizeof (EFI_PEI_FILE_HANDLE
) * PcdGet32 (PcdPeiCoreMaxPeimPerFv
));
78 // Go ahead to scan this Fv, and cache FileHandles within it.
80 Status
= EFI_NOT_FOUND
;
81 for (PeimCount
= 0; PeimCount
<= PcdGet32 (PcdPeiCoreMaxPeimPerFv
); PeimCount
++) {
82 Status
= FvPpi
->FindFileByType (FvPpi
, PEI_CORE_INTERNAL_FFS_FILE_DISPATCH_TYPE
, CoreFileHandle
->FvHandle
, &FileHandle
);
83 if (Status
!= EFI_SUCCESS
|| PeimCount
== PcdGet32 (PcdPeiCoreMaxPeimPerFv
)) {
87 Private
->CurrentFvFileHandles
[PeimCount
] = FileHandle
;
91 // Check whether the count of files exceeds the max support files in a FV image
92 // If more files are required in a FV image, PcdPeiCoreMaxPeimPerFv can be set to a larger value in DSC file.
94 ASSERT ((Status
!= EFI_SUCCESS
) || (PeimCount
< PcdGet32 (PcdPeiCoreMaxPeimPerFv
)));
97 // Get Apriori File handle
99 Private
->AprioriCount
= 0;
100 Status
= FvPpi
->FindFileByName (FvPpi
, &gPeiAprioriFileNameGuid
, &CoreFileHandle
->FvHandle
, &AprioriFileHandle
);
101 if (!EFI_ERROR(Status
) && AprioriFileHandle
!= NULL
) {
103 // Read the Apriori file
105 Status
= FvPpi
->FindSectionByType (FvPpi
, EFI_SECTION_RAW
, AprioriFileHandle
, (VOID
**) &Apriori
);
106 if (!EFI_ERROR (Status
)) {
108 // Calculate the number of PEIMs in the A Priori list
110 Status
= FvPpi
->GetFileInfo (FvPpi
, AprioriFileHandle
, &FileInfo
);
111 ASSERT_EFI_ERROR (Status
);
112 Private
->AprioriCount
= FileInfo
.BufferSize
;
113 if (IS_SECTION2 (FileInfo
.Buffer
)) {
114 Private
->AprioriCount
-= sizeof (EFI_COMMON_SECTION_HEADER2
);
116 Private
->AprioriCount
-= sizeof (EFI_COMMON_SECTION_HEADER
);
118 Private
->AprioriCount
/= sizeof (EFI_GUID
);
120 for (Index
= 0; Index
< PeimCount
; Index
++) {
122 // Make an array of file name guids that matches the FileHandle array so we can convert
123 // quickly from file name to file handle
125 Status
= FvPpi
->GetFileInfo (FvPpi
, Private
->CurrentFvFileHandles
[Index
], &FileInfo
);
126 CopyMem (&FileGuid
[Index
], &FileInfo
.FileName
, sizeof(EFI_GUID
));
130 // Walk through FileGuid array to find out who is invalid PEIM guid in Apriori file.
131 // Add available PEIMs in Apriori file into TempFileHandles array at first.
134 for (Index
= 0; Index2
< Private
->AprioriCount
; Index
++) {
135 while (Index2
< Private
->AprioriCount
) {
136 Guid
= ScanGuid (FileGuid
, PeimCount
* sizeof (EFI_GUID
), &Apriori
[Index2
++]);
144 PeimIndex
= ((UINTN
)Guid
- (UINTN
)&FileGuid
[0])/sizeof (EFI_GUID
);
145 TempFileHandles
[Index
] = Private
->CurrentFvFileHandles
[PeimIndex
];
148 // Since we have copied the file handle we can remove it from this list.
150 Private
->CurrentFvFileHandles
[PeimIndex
] = NULL
;
154 // Update valid Aprioricount
156 Private
->AprioriCount
= Index
;
159 // Add in any PEIMs not in the Apriori file
161 for (;Index
< PeimCount
; Index
++) {
162 for (Index2
= 0; Index2
< PeimCount
; Index2
++) {
163 if (Private
->CurrentFvFileHandles
[Index2
] != NULL
) {
164 TempFileHandles
[Index
] = Private
->CurrentFvFileHandles
[Index2
];
165 Private
->CurrentFvFileHandles
[Index2
] = NULL
;
171 //Index the end of array contains re-range Pei moudle.
173 TempFileHandles
[Index
] = NULL
;
176 // Private->CurrentFvFileHandles is currently in PEIM in the FV order.
177 // We need to update it to start with files in the A Priori list and
178 // then the remaining files in PEIM order.
180 CopyMem (Private
->CurrentFvFileHandles
, TempFileHandles
, sizeof (EFI_PEI_FILE_HANDLE
) * PcdGet32 (PcdPeiCoreMaxPeimPerFv
));
184 // Cache the current Fv File Handle. So that we don't have to scan the Fv again.
185 // Instead, we can retrieve the file handles within this Fv from cachable data.
187 Private
->Fv
[Private
->CurrentPeimFvCount
].ScanFv
= TRUE
;
188 CopyMem (Private
->Fv
[Private
->CurrentPeimFvCount
].FvFileHandles
, Private
->CurrentFvFileHandles
, sizeof (EFI_PEI_FILE_HANDLE
) * PcdGet32 (PcdPeiCoreMaxPeimPerFv
));
193 // This is the minimum memory required by DxeCore initialization. When LMFA feature enabled,
194 // This part of memory still need reserved on the very top of memory so that the DXE Core could
195 // use these memory for data initialization. This macro should be sync with the same marco
196 // defined in DXE Core.
198 #define MINIMUM_INITIAL_MEMORY_SIZE 0x10000
200 This function is to test if the memory range described in resource HOB is available or not.
202 This function should only be invoked when Loading Module at Fixed Address(LMFA) feature is enabled. Some platform may allocate the
203 memory before PeiLoadFixAddressHook in invoked. so this function is to test if the memory range described by the input resource HOB is
206 @param PrivateData Pointer to the private data passed in from caller
207 @param ResourceHob Pointer to a resource HOB which described the memory range described by the input resource HOB
210 PeiLoadFixAddressIsMemoryRangeAvailable (
211 IN PEI_CORE_INSTANCE
*PrivateData
,
212 IN EFI_HOB_RESOURCE_DESCRIPTOR
*ResourceHob
215 EFI_HOB_MEMORY_ALLOCATION
*MemoryHob
;
217 EFI_PEI_HOB_POINTERS Hob
;
220 if (PrivateData
== NULL
|| ResourceHob
== NULL
) {
224 // test if the memory range describe in the HOB is already allocated.
226 for (Hob
.Raw
= PrivateData
->HobList
.Raw
; !END_OF_HOB_LIST(Hob
); Hob
.Raw
= GET_NEXT_HOB(Hob
)) {
228 // See if this is a memory allocation HOB
230 if (GET_HOB_TYPE (Hob
) == EFI_HOB_TYPE_MEMORY_ALLOCATION
) {
231 MemoryHob
= Hob
.MemoryAllocation
;
232 if(MemoryHob
->AllocDescriptor
.MemoryBaseAddress
== ResourceHob
->PhysicalStart
&&
233 MemoryHob
->AllocDescriptor
.MemoryBaseAddress
+ MemoryHob
->AllocDescriptor
.MemoryLength
== ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
) {
244 Hook function for Loading Module at Fixed Address feature
246 This function should only be invoked when Loading Module at Fixed Address(LMFA) feature is enabled. When feature is
247 configured as Load Modules at Fix Absolute Address, this function is to validate the top address assigned by user. When
248 feature is configured as Load Modules at Fixed Offset, the functino is to find the top address which is TOLM-TSEG in general.
249 And also the function will re-install PEI memory.
251 @param PrivateData Pointer to the private data passed in from caller
255 PeiLoadFixAddressHook(
256 IN PEI_CORE_INSTANCE
*PrivateData
259 EFI_PHYSICAL_ADDRESS TopLoadingAddress
;
260 UINT64 PeiMemorySize
;
261 UINT64 TotalReservedMemorySize
;
262 UINT64 MemoryRangeEnd
;
263 EFI_PHYSICAL_ADDRESS HighAddress
;
264 EFI_HOB_RESOURCE_DESCRIPTOR
*ResourceHob
;
265 EFI_HOB_RESOURCE_DESCRIPTOR
*NextResourceHob
;
266 EFI_HOB_RESOURCE_DESCRIPTOR
*CurrentResourceHob
;
267 EFI_PEI_HOB_POINTERS CurrentHob
;
268 EFI_PEI_HOB_POINTERS Hob
;
269 EFI_PEI_HOB_POINTERS NextHob
;
270 EFI_HOB_MEMORY_ALLOCATION
*MemoryHob
;
272 // Initialize Local Variables
274 CurrentResourceHob
= NULL
;
276 NextResourceHob
= NULL
;
278 TopLoadingAddress
= 0;
280 CurrentHob
.Raw
= PrivateData
->HobList
.Raw
;
281 PeiMemorySize
= PrivateData
->PhysicalMemoryLength
;
283 // The top reserved memory include 3 parts: the topest range is for DXE core initialization with the size MINIMUM_INITIAL_MEMORY_SIZE
284 // then RuntimeCodePage range and Boot time code range.
286 TotalReservedMemorySize
= MINIMUM_INITIAL_MEMORY_SIZE
+ EFI_PAGES_TO_SIZE(PcdGet32(PcdLoadFixAddressRuntimeCodePageNumber
));
287 TotalReservedMemorySize
+= EFI_PAGES_TO_SIZE(PcdGet32(PcdLoadFixAddressBootTimeCodePageNumber
)) ;
289 // PEI memory range lies below the top reserved memory
291 TotalReservedMemorySize
+= PeiMemorySize
;
293 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED INFO: PcdLoadFixAddressRuntimeCodePageNumber= 0x%x.\n", PcdGet32(PcdLoadFixAddressRuntimeCodePageNumber
)));
294 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED INFO: PcdLoadFixAddressBootTimeCodePageNumber= 0x%x.\n", PcdGet32(PcdLoadFixAddressBootTimeCodePageNumber
)));
295 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED INFO: PcdLoadFixAddressPeiCodePageNumber= 0x%x.\n", PcdGet32(PcdLoadFixAddressPeiCodePageNumber
)));
296 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED INFO: Total Reserved Memory Size = 0x%lx.\n", TotalReservedMemorySize
));
298 // Loop through the system memory typed hob to merge the adjacent memory range
300 for (Hob
.Raw
= PrivateData
->HobList
.Raw
; !END_OF_HOB_LIST(Hob
); Hob
.Raw
= GET_NEXT_HOB(Hob
)) {
302 // See if this is a resource descriptor HOB
304 if (GET_HOB_TYPE (Hob
) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR
) {
306 ResourceHob
= Hob
.ResourceDescriptor
;
308 // If range described in this hob is not system memory or heigher than MAX_ADDRESS, ignored.
310 if (ResourceHob
->ResourceType
!= EFI_RESOURCE_SYSTEM_MEMORY
||
311 ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
> MAX_ADDRESS
) {
315 for (NextHob
.Raw
= PrivateData
->HobList
.Raw
; !END_OF_HOB_LIST(NextHob
); NextHob
.Raw
= GET_NEXT_HOB(NextHob
)) {
316 if (NextHob
.Raw
== Hob
.Raw
){
320 // See if this is a resource descriptor HOB
322 if (GET_HOB_TYPE (NextHob
) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR
) {
324 NextResourceHob
= NextHob
.ResourceDescriptor
;
326 // test if range described in this NextResourceHob is system memory and have the same attribute.
327 // Note: Here is a assumption that system memory should always be healthy even without test.
329 if (NextResourceHob
->ResourceType
== EFI_RESOURCE_SYSTEM_MEMORY
&&
330 (((NextResourceHob
->ResourceAttribute
^ResourceHob
->ResourceAttribute
)&(~EFI_RESOURCE_ATTRIBUTE_TESTED
)) == 0)){
333 // See if the memory range described in ResourceHob and NextResourceHob is adjacent
335 if ((ResourceHob
->PhysicalStart
<= NextResourceHob
->PhysicalStart
&&
336 ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
>= NextResourceHob
->PhysicalStart
)||
337 (ResourceHob
->PhysicalStart
>= NextResourceHob
->PhysicalStart
&&
338 ResourceHob
->PhysicalStart
<= NextResourceHob
->PhysicalStart
+ NextResourceHob
->ResourceLength
)) {
340 MemoryRangeEnd
= ((ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
)>(NextResourceHob
->PhysicalStart
+ NextResourceHob
->ResourceLength
)) ?
341 (ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
):(NextResourceHob
->PhysicalStart
+ NextResourceHob
->ResourceLength
);
343 ResourceHob
->PhysicalStart
= (ResourceHob
->PhysicalStart
< NextResourceHob
->PhysicalStart
) ?
344 ResourceHob
->PhysicalStart
: NextResourceHob
->PhysicalStart
;
347 ResourceHob
->ResourceLength
= (MemoryRangeEnd
- ResourceHob
->PhysicalStart
);
349 ResourceHob
->ResourceAttribute
= ResourceHob
->ResourceAttribute
& (~EFI_RESOURCE_ATTRIBUTE_TESTED
);
351 // Delete the NextResourceHob by marking it as unused.
353 GET_HOB_TYPE (NextHob
) = EFI_HOB_TYPE_UNUSED
;
362 // Some platform is already allocated pages before the HOB re-org. Here to build dedicated resource HOB to describe
363 // the allocated memory range
365 for (Hob
.Raw
= PrivateData
->HobList
.Raw
; !END_OF_HOB_LIST(Hob
); Hob
.Raw
= GET_NEXT_HOB(Hob
)) {
367 // See if this is a memory allocation HOB
369 if (GET_HOB_TYPE (Hob
) == EFI_HOB_TYPE_MEMORY_ALLOCATION
) {
370 MemoryHob
= Hob
.MemoryAllocation
;
371 for (NextHob
.Raw
= PrivateData
->HobList
.Raw
; !END_OF_HOB_LIST(NextHob
); NextHob
.Raw
= GET_NEXT_HOB(NextHob
)) {
373 // See if this is a resource descriptor HOB
375 if (GET_HOB_TYPE (NextHob
) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR
) {
376 NextResourceHob
= NextHob
.ResourceDescriptor
;
378 // If range described in this hob is not system memory or heigher than MAX_ADDRESS, ignored.
380 if (NextResourceHob
->ResourceType
!= EFI_RESOURCE_SYSTEM_MEMORY
|| NextResourceHob
->PhysicalStart
+ NextResourceHob
->ResourceLength
> MAX_ADDRESS
) {
384 // If the range describe in memory allocation HOB belongs to the memroy range described by the resource hob
386 if (MemoryHob
->AllocDescriptor
.MemoryBaseAddress
>= NextResourceHob
->PhysicalStart
&&
387 MemoryHob
->AllocDescriptor
.MemoryBaseAddress
+ MemoryHob
->AllocDescriptor
.MemoryLength
<= NextResourceHob
->PhysicalStart
+ NextResourceHob
->ResourceLength
) {
389 // Build seperate resource hob for this allocated range
391 if (MemoryHob
->AllocDescriptor
.MemoryBaseAddress
> NextResourceHob
->PhysicalStart
) {
392 BuildResourceDescriptorHob (
393 EFI_RESOURCE_SYSTEM_MEMORY
,
394 NextResourceHob
->ResourceAttribute
,
395 NextResourceHob
->PhysicalStart
,
396 (MemoryHob
->AllocDescriptor
.MemoryBaseAddress
- NextResourceHob
->PhysicalStart
)
399 if (MemoryHob
->AllocDescriptor
.MemoryBaseAddress
+ MemoryHob
->AllocDescriptor
.MemoryLength
< NextResourceHob
->PhysicalStart
+ NextResourceHob
->ResourceLength
) {
400 BuildResourceDescriptorHob (
401 EFI_RESOURCE_SYSTEM_MEMORY
,
402 NextResourceHob
->ResourceAttribute
,
403 MemoryHob
->AllocDescriptor
.MemoryBaseAddress
+ MemoryHob
->AllocDescriptor
.MemoryLength
,
404 (NextResourceHob
->PhysicalStart
+ NextResourceHob
->ResourceLength
-(MemoryHob
->AllocDescriptor
.MemoryBaseAddress
+ MemoryHob
->AllocDescriptor
.MemoryLength
))
407 NextResourceHob
->PhysicalStart
= MemoryHob
->AllocDescriptor
.MemoryBaseAddress
;
408 NextResourceHob
->ResourceLength
= MemoryHob
->AllocDescriptor
.MemoryLength
;
417 // Try to find and validate the TOP address.
419 if ((INT64
)PcdGet64(PcdLoadModuleAtFixAddressEnable
) > 0 ) {
421 // The LMFA feature is enabled as load module at fixed absolute address.
423 TopLoadingAddress
= (EFI_PHYSICAL_ADDRESS
)PcdGet64(PcdLoadModuleAtFixAddressEnable
);
424 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED INFO: Loading module at fixed absolute address.\n"));
426 // validate the Address. Loop the resource descriptor HOB to make sure the address is in valid memory range
428 if ((TopLoadingAddress
& EFI_PAGE_MASK
) != 0) {
429 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED ERROR:Top Address 0x%lx is invalid since top address should be page align. \n", TopLoadingAddress
));
433 // Search for a memory region that is below MAX_ADDRESS and in which TopLoadingAddress lies
435 for (Hob
.Raw
= PrivateData
->HobList
.Raw
; !END_OF_HOB_LIST(Hob
); Hob
.Raw
= GET_NEXT_HOB(Hob
)) {
437 // See if this is a resource descriptor HOB
439 if (GET_HOB_TYPE (Hob
) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR
) {
441 ResourceHob
= Hob
.ResourceDescriptor
;
443 // See if this resource descrior HOB describes tested system memory below MAX_ADDRESS
445 if (ResourceHob
->ResourceType
== EFI_RESOURCE_SYSTEM_MEMORY
&&
446 ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
<= MAX_ADDRESS
) {
448 // See if Top address specified by user is valid.
450 if (ResourceHob
->PhysicalStart
+ TotalReservedMemorySize
< TopLoadingAddress
&&
451 (ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
- MINIMUM_INITIAL_MEMORY_SIZE
) >= TopLoadingAddress
&&
452 PeiLoadFixAddressIsMemoryRangeAvailable(PrivateData
, ResourceHob
)) {
453 CurrentResourceHob
= ResourceHob
;
460 if (CurrentResourceHob
!= NULL
) {
461 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED INFO:Top Address 0x%lx is valid \n", TopLoadingAddress
));
462 TopLoadingAddress
+= MINIMUM_INITIAL_MEMORY_SIZE
;
464 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED ERROR:Top Address 0x%lx is invalid \n", TopLoadingAddress
));
465 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED ERROR:The recommended Top Address for the platform is: \n"));
467 // Print the recomended Top address range.
469 for (Hob
.Raw
= PrivateData
->HobList
.Raw
; !END_OF_HOB_LIST(Hob
); Hob
.Raw
= GET_NEXT_HOB(Hob
)) {
471 // See if this is a resource descriptor HOB
473 if (GET_HOB_TYPE (Hob
) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR
) {
475 ResourceHob
= Hob
.ResourceDescriptor
;
477 // See if this resource descrior HOB describes tested system memory below MAX_ADDRESS
479 if (ResourceHob
->ResourceType
== EFI_RESOURCE_SYSTEM_MEMORY
&&
480 ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
<= MAX_ADDRESS
) {
482 // See if Top address specified by user is valid.
484 if (ResourceHob
->ResourceLength
> TotalReservedMemorySize
&& PeiLoadFixAddressIsMemoryRangeAvailable(PrivateData
, ResourceHob
)) {
485 DEBUG ((EFI_D_INFO
, "(0x%lx, 0x%lx)\n",
486 (ResourceHob
->PhysicalStart
+ TotalReservedMemorySize
-MINIMUM_INITIAL_MEMORY_SIZE
),
487 (ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
-MINIMUM_INITIAL_MEMORY_SIZE
)
501 // The LMFA feature is enabled as load module at fixed offset relative to TOLM
502 // Parse the Hob list to find the topest available memory. Generally it is (TOLM - TSEG)
505 // Search for a tested memory region that is below MAX_ADDRESS
507 for (Hob
.Raw
= PrivateData
->HobList
.Raw
; !END_OF_HOB_LIST(Hob
); Hob
.Raw
= GET_NEXT_HOB(Hob
)) {
509 // See if this is a resource descriptor HOB
511 if (GET_HOB_TYPE (Hob
) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR
) {
513 ResourceHob
= Hob
.ResourceDescriptor
;
515 // See if this resource descrior HOB describes tested system memory below MAX_ADDRESS
517 if (ResourceHob
->ResourceType
== EFI_RESOURCE_SYSTEM_MEMORY
&&
518 ResourceHob
->PhysicalStart
+ ResourceHob
->ResourceLength
<= MAX_ADDRESS
&&
519 ResourceHob
->ResourceLength
> TotalReservedMemorySize
&& PeiLoadFixAddressIsMemoryRangeAvailable(PrivateData
, ResourceHob
)) {
521 // See if this is the highest largest system memory region below MaxAddress
523 if (ResourceHob
->PhysicalStart
> HighAddress
) {
524 CurrentResourceHob
= ResourceHob
;
526 HighAddress
= CurrentResourceHob
->PhysicalStart
;
531 if (CurrentResourceHob
== NULL
) {
532 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED ERROR:The System Memory is too small\n"));
539 TopLoadingAddress
= CurrentResourceHob
->PhysicalStart
+ CurrentResourceHob
->ResourceLength
;
543 if (CurrentResourceHob
!= NULL
) {
545 // rebuild resource HOB for PEI memmory and reserved memory
547 BuildResourceDescriptorHob (
548 EFI_RESOURCE_SYSTEM_MEMORY
,
550 EFI_RESOURCE_ATTRIBUTE_PRESENT
|
551 EFI_RESOURCE_ATTRIBUTE_INITIALIZED
|
552 EFI_RESOURCE_ATTRIBUTE_TESTED
|
553 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE
|
554 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE
|
555 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE
|
556 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
558 (TopLoadingAddress
- TotalReservedMemorySize
),
559 TotalReservedMemorySize
562 // rebuild resource for the remain memory if necessary
564 if (CurrentResourceHob
->PhysicalStart
< TopLoadingAddress
- TotalReservedMemorySize
) {
565 BuildResourceDescriptorHob (
566 EFI_RESOURCE_SYSTEM_MEMORY
,
568 EFI_RESOURCE_ATTRIBUTE_PRESENT
|
569 EFI_RESOURCE_ATTRIBUTE_INITIALIZED
|
570 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE
|
571 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE
|
572 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE
|
573 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
575 CurrentResourceHob
->PhysicalStart
,
576 (TopLoadingAddress
- TotalReservedMemorySize
- CurrentResourceHob
->PhysicalStart
)
579 if (CurrentResourceHob
->PhysicalStart
+ CurrentResourceHob
->ResourceLength
> TopLoadingAddress
) {
580 BuildResourceDescriptorHob (
581 EFI_RESOURCE_SYSTEM_MEMORY
,
583 EFI_RESOURCE_ATTRIBUTE_PRESENT
|
584 EFI_RESOURCE_ATTRIBUTE_INITIALIZED
|
585 EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE
|
586 EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE
|
587 EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE
|
588 EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
591 (CurrentResourceHob
->PhysicalStart
+ CurrentResourceHob
->ResourceLength
- TopLoadingAddress
)
595 // Delete CurrentHob by marking it as unused since the the memory range described by is rebuilt.
597 GET_HOB_TYPE (CurrentHob
) = EFI_HOB_TYPE_UNUSED
;
601 // Cache the top address for Loading Module at Fixed Address feature
603 PrivateData
->LoadModuleAtFixAddressTopAddress
= TopLoadingAddress
- MINIMUM_INITIAL_MEMORY_SIZE
;
604 DEBUG ((EFI_D_INFO
, "LOADING MODULE FIXED INFO: Top address = 0x%lx\n", PrivateData
->LoadModuleAtFixAddressTopAddress
));
606 // reinstall the PEI memory relative to TopLoadingAddress
608 PrivateData
->PhysicalMemoryBegin
= TopLoadingAddress
- TotalReservedMemorySize
;
609 PrivateData
->FreePhysicalMemoryTop
= PrivateData
->PhysicalMemoryBegin
+ PeiMemorySize
;
613 This routine is invoked in switch stack as PeiCore Entry.
615 @param SecCoreData Points to a data structure containing information about the PEI core's operating
616 environment, such as the size and location of temporary RAM, the stack location and
618 @param Private Pointer to old core data that is used to initialize the
624 IN CONST EFI_SEC_PEI_HAND_OFF
*SecCoreData
,
625 IN PEI_CORE_INSTANCE
*Private
631 PeiCore (SecCoreData
, NULL
, Private
);
635 Conduct PEIM dispatch.
637 @param SecCoreData Points to a data structure containing information about the PEI core's operating
638 environment, such as the size and location of temporary RAM, the stack location and
640 @param Private Pointer to the private data passed in from caller
645 IN CONST EFI_SEC_PEI_HAND_OFF
*SecCoreData
,
646 IN PEI_CORE_INSTANCE
*Private
652 CONST EFI_PEI_SERVICES
**PeiServices
;
653 EFI_PEI_FILE_HANDLE PeimFileHandle
;
656 UINT32 AuthenticationState
;
657 EFI_PHYSICAL_ADDRESS EntryPoint
;
658 EFI_PEIM_ENTRY_POINT2 PeimEntryPoint
;
659 UINTN SaveCurrentPeimCount
;
660 UINTN SaveCurrentFvCount
;
661 EFI_PEI_FILE_HANDLE SaveCurrentFileHandle
;
662 PEIM_FILE_HANDLE_EXTENDED_DATA ExtendedData
;
663 EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI
*TemporaryRamSupportPpi
;
665 UINTN HeapTemporaryRamSize
;
666 EFI_PHYSICAL_ADDRESS BaseOfNewHeap
;
667 EFI_PHYSICAL_ADDRESS TopOfNewStack
;
668 EFI_PHYSICAL_ADDRESS TopOfOldStack
;
669 EFI_PHYSICAL_ADDRESS TemporaryRamBase
;
670 UINTN TemporaryRamSize
;
671 UINTN TemporaryStackSize
;
672 VOID
*TemporaryStackBase
;
673 UINTN PeiTemporaryRamSize
;
674 VOID
*PeiTemporaryRamBase
;
676 BOOLEAN StackOffsetPositive
;
677 EFI_PHYSICAL_ADDRESS HoleMemBase
;
679 EFI_FV_FILE_INFO FvFileInfo
;
680 PEI_CORE_FV_HANDLE
*CoreFvHandle
;
681 VOID
*LoadFixPeiCodeBegin
;
682 EFI_PHYSICAL_ADDRESS TempBase1
;
684 EFI_PHYSICAL_ADDRESS TempBase2
;
688 PeiServices
= (CONST EFI_PEI_SERVICES
**) &Private
->Ps
;
689 PeimEntryPoint
= NULL
;
690 PeimFileHandle
= NULL
;
693 if ((Private
->PeiMemoryInstalled
) && (Private
->HobList
.HandoffInformationTable
->BootMode
!= BOOT_ON_S3_RESUME
|| PcdGetBool (PcdShadowPeimOnS3Boot
))) {
695 // Once real memory is available, shadow the RegisterForShadow modules. And meanwhile
696 // update the modules' status from PEIM_STATE_REGISITER_FOR_SHADOW to PEIM_STATE_DONE.
698 SaveCurrentPeimCount
= Private
->CurrentPeimCount
;
699 SaveCurrentFvCount
= Private
->CurrentPeimFvCount
;
700 SaveCurrentFileHandle
= Private
->CurrentFileHandle
;
702 for (Index1
= 0; Index1
<= SaveCurrentFvCount
; Index1
++) {
703 for (Index2
= 0; (Index2
< PcdGet32 (PcdPeiCoreMaxPeimPerFv
)) && (Private
->Fv
[Index1
].FvFileHandles
[Index2
] != NULL
); Index2
++) {
704 if (Private
->Fv
[Index1
].PeimState
[Index2
] == PEIM_STATE_REGISITER_FOR_SHADOW
) {
705 PeimFileHandle
= Private
->Fv
[Index1
].FvFileHandles
[Index2
];
706 Status
= PeiLoadImage (
707 (CONST EFI_PEI_SERVICES
**) &Private
->Ps
,
709 PEIM_STATE_REGISITER_FOR_SHADOW
,
713 if (Status
== EFI_SUCCESS
) {
715 // PEIM_STATE_REGISITER_FOR_SHADOW move to PEIM_STATE_DONE
717 Private
->Fv
[Index1
].PeimState
[Index2
]++;
718 Private
->CurrentFileHandle
= PeimFileHandle
;
719 Private
->CurrentPeimFvCount
= Index1
;
720 Private
->CurrentPeimCount
= Index2
;
722 // Call the PEIM entry point
724 PeimEntryPoint
= (EFI_PEIM_ENTRY_POINT2
)(UINTN
)EntryPoint
;
726 PERF_START (PeimFileHandle
, "PEIM", NULL
, 0);
727 PeimEntryPoint(PeimFileHandle
, (const EFI_PEI_SERVICES
**) &Private
->Ps
);
728 PERF_END (PeimFileHandle
, "PEIM", NULL
, 0);
732 // Process the Notify list and dispatch any notifies for
733 // newly installed PPIs.
735 ProcessNotifyList (Private
);
739 Private
->CurrentFileHandle
= SaveCurrentFileHandle
;
740 Private
->CurrentPeimFvCount
= SaveCurrentFvCount
;
741 Private
->CurrentPeimCount
= SaveCurrentPeimCount
;
745 // This is the main dispatch loop. It will search known FVs for PEIMs and
746 // attempt to dispatch them. If any PEIM gets dispatched through a single
747 // pass of the dispatcher, it will start over from the Bfv again to see
748 // if any new PEIMs dependencies got satisfied. With a well ordered
749 // FV where PEIMs are found in the order their dependencies are also
750 // satisfied, this dipatcher should run only once.
754 // In case that reenter PeiCore happens, the last pass record is still available.
756 if (!Private
->PeimDispatcherReenter
) {
757 Private
->PeimNeedingDispatch
= FALSE
;
758 Private
->PeimDispatchOnThisPass
= FALSE
;
760 Private
->PeimDispatcherReenter
= FALSE
;
763 for (FvCount
= Private
->CurrentPeimFvCount
; FvCount
< Private
->FvCount
; FvCount
++) {
764 CoreFvHandle
= FindNextCoreFvHandle (Private
, FvCount
);
765 ASSERT (CoreFvHandle
!= NULL
);
768 // If the FV has corresponding EFI_PEI_FIRMWARE_VOLUME_PPI instance, then dispatch it.
770 if (CoreFvHandle
->FvPpi
== NULL
) {
774 Private
->CurrentPeimFvCount
= FvCount
;
776 if (Private
->CurrentPeimCount
== 0) {
778 // When going through each FV, at first, search Apriori file to
779 // reorder all PEIMs to ensure the PEIMs in Apriori file to get
780 // dispatch at first.
782 DiscoverPeimsAndOrderWithApriori (Private
, CoreFvHandle
);
786 // Start to dispatch all modules within the current Fv.
788 for (PeimCount
= Private
->CurrentPeimCount
;
789 (PeimCount
< PcdGet32 (PcdPeiCoreMaxPeimPerFv
)) && (Private
->CurrentFvFileHandles
[PeimCount
] != NULL
);
791 Private
->CurrentPeimCount
= PeimCount
;
792 PeimFileHandle
= Private
->CurrentFileHandle
= Private
->CurrentFvFileHandles
[PeimCount
];
794 if (Private
->Fv
[FvCount
].PeimState
[PeimCount
] == PEIM_STATE_NOT_DISPATCHED
) {
795 if (!DepexSatisfied (Private
, PeimFileHandle
, PeimCount
)) {
796 Private
->PeimNeedingDispatch
= TRUE
;
798 Status
= CoreFvHandle
->FvPpi
->GetFileInfo (CoreFvHandle
->FvPpi
, PeimFileHandle
, &FvFileInfo
);
799 ASSERT_EFI_ERROR (Status
);
800 if (FvFileInfo
.FileType
== EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE
) {
802 // For Fv type file, Produce new FV PPI and FV hob
804 Status
= ProcessFvFile (Private
, &Private
->Fv
[FvCount
], PeimFileHandle
);
805 if (Status
== EFI_SUCCESS
) {
807 // PEIM_STATE_NOT_DISPATCHED move to PEIM_STATE_DISPATCHED
809 Private
->Fv
[FvCount
].PeimState
[PeimCount
]++;
810 Private
->PeimDispatchOnThisPass
= TRUE
;
814 // For PEIM driver, Load its entry point
816 Status
= PeiLoadImage (
819 PEIM_STATE_NOT_DISPATCHED
,
823 if (Status
== EFI_SUCCESS
) {
825 // The PEIM has its dependencies satisfied, and its entry point
826 // has been found, so invoke it.
828 PERF_START (PeimFileHandle
, "PEIM", NULL
, 0);
830 ExtendedData
.Handle
= (EFI_HANDLE
)PeimFileHandle
;
832 REPORT_STATUS_CODE_WITH_EXTENDED_DATA (
834 (EFI_SOFTWARE_PEI_CORE
| EFI_SW_PC_INIT_BEGIN
),
835 (VOID
*)(&ExtendedData
),
836 sizeof (ExtendedData
)
839 Status
= VerifyPeim (Private
, CoreFvHandle
->FvHandle
, PeimFileHandle
, AuthenticationState
);
840 if (Status
!= EFI_SECURITY_VIOLATION
) {
842 // PEIM_STATE_NOT_DISPATCHED move to PEIM_STATE_DISPATCHED
844 Private
->Fv
[FvCount
].PeimState
[PeimCount
]++;
846 // Call the PEIM entry point for PEIM driver
848 PeimEntryPoint
= (EFI_PEIM_ENTRY_POINT2
)(UINTN
)EntryPoint
;
849 PeimEntryPoint (PeimFileHandle
, (const EFI_PEI_SERVICES
**) PeiServices
);
850 Private
->PeimDispatchOnThisPass
= TRUE
;
853 REPORT_STATUS_CODE_WITH_EXTENDED_DATA (
855 (EFI_SOFTWARE_PEI_CORE
| EFI_SW_PC_INIT_END
),
856 (VOID
*)(&ExtendedData
),
857 sizeof (ExtendedData
)
859 PERF_END (PeimFileHandle
, "PEIM", NULL
, 0);
864 if (Private
->SwitchStackSignal
) {
866 // Before switch stack from temporary memory to permenent memory, caculate the heap and stack
867 // usage in temporary memory for debuging.
870 UINT32
*StackPointer
;
872 for (StackPointer
= (UINT32
*)SecCoreData
->StackBase
;
873 (StackPointer
< (UINT32
*)((UINTN
)SecCoreData
->StackBase
+ SecCoreData
->StackSize
)) \
874 && (*StackPointer
== INIT_CAR_VALUE
);
877 DEBUG ((EFI_D_INFO
, "Temp Stack : BaseAddress=0x%p Length=0x%X\n", SecCoreData
->StackBase
, (UINT32
)SecCoreData
->StackSize
));
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
)));
879 DEBUG ((EFI_D_INFO
, "Total temporary memory: %d bytes.\n", (UINT32
)SecCoreData
->TemporaryRamSize
));
880 DEBUG ((EFI_D_INFO
, " temporary memory stack ever used: %d bytes.\n",
881 (UINT32
)(SecCoreData
->StackSize
- ((UINTN
) StackPointer
- (UINTN
)SecCoreData
->StackBase
))
883 DEBUG ((EFI_D_INFO
, " temporary memory heap used: %d bytes.\n",
884 (UINT32
)((UINTN
)Private
->HobList
.HandoffInformationTable
->EfiFreeMemoryBottom
- (UINTN
)Private
->HobList
.Raw
)
888 if (PcdGet64(PcdLoadModuleAtFixAddressEnable
) != 0 && (Private
->HobList
.HandoffInformationTable
->BootMode
!= BOOT_ON_S3_RESUME
)) {
890 // Loading Module at Fixed Address is enabled
892 PeiLoadFixAddressHook (Private
);
895 // If Loading Module at Fixed Address is enabled, Allocating memory range for Pei code range.
897 LoadFixPeiCodeBegin
= AllocatePages((UINTN
)PcdGet32(PcdLoadFixAddressPeiCodePageNumber
));
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
)));
902 // Reserve the size of new stack at bottom of physical memory
904 // The size of new stack in permenent memory must be the same size
905 // or larger than the size of old stack in temporary memory.
906 // But if new stack is smaller than the size of old stack, we also reserve
907 // the size of old stack at bottom of permenent memory.
909 NewStackSize
= RShiftU64 (Private
->PhysicalMemoryLength
, 1);
910 NewStackSize
= ALIGN_VALUE (NewStackSize
, EFI_PAGE_SIZE
);
911 NewStackSize
= MIN (PcdGet32(PcdPeiCoreMaxPeiStackSize
), NewStackSize
);
912 DEBUG ((EFI_D_INFO
, "Old Stack size %d, New stack size %d\n", (UINT32
)SecCoreData
->StackSize
, (UINT32
)NewStackSize
));
913 ASSERT (NewStackSize
>= SecCoreData
->StackSize
);
916 // Caculate stack offset and heap offset between temporary memory and new permement
917 // memory seperately.
919 TopOfOldStack
= (UINTN
)SecCoreData
->StackBase
+ SecCoreData
->StackSize
;
920 TopOfNewStack
= Private
->PhysicalMemoryBegin
+ NewStackSize
;
921 if (TopOfNewStack
>= TopOfOldStack
) {
922 StackOffsetPositive
= TRUE
;
923 StackOffset
= (UINTN
)(TopOfNewStack
- TopOfOldStack
);
925 StackOffsetPositive
= FALSE
;
926 StackOffset
= (UINTN
)(TopOfOldStack
- TopOfNewStack
);
928 Private
->StackOffsetPositive
= StackOffsetPositive
;
929 Private
->StackOffset
= StackOffset
;
932 // Build Stack HOB that describes the permanent memory stack
934 DEBUG ((EFI_D_INFO
, "Stack Hob: BaseAddress=0x%lX Length=0x%lX\n", TopOfNewStack
- NewStackSize
, NewStackSize
));
935 BuildStackHob (TopOfNewStack
- NewStackSize
, NewStackSize
);
938 // Cache information from SecCoreData into locals before SecCoreData is converted to a permanent memory address
940 TemporaryRamBase
= (EFI_PHYSICAL_ADDRESS
)(UINTN
)SecCoreData
->TemporaryRamBase
;
941 TemporaryRamSize
= SecCoreData
->TemporaryRamSize
;
942 TemporaryStackSize
= SecCoreData
->StackSize
;
943 TemporaryStackBase
= SecCoreData
->StackBase
;
944 PeiTemporaryRamSize
= SecCoreData
->PeiTemporaryRamSize
;
945 PeiTemporaryRamBase
= SecCoreData
->PeiTemporaryRamBase
;
948 // TemporaryRamSupportPpi is produced by platform's SEC
950 Status
= PeiServicesLocatePpi (
951 &gEfiTemporaryRamSupportPpiGuid
,
954 (VOID
**)&TemporaryRamSupportPpi
956 if (!EFI_ERROR (Status
)) {
960 BaseOfNewHeap
= TopOfNewStack
;
961 if (BaseOfNewHeap
>= (UINTN
)SecCoreData
->PeiTemporaryRamBase
) {
962 Private
->HeapOffsetPositive
= TRUE
;
963 Private
->HeapOffset
= (UINTN
)(BaseOfNewHeap
- (UINTN
)SecCoreData
->PeiTemporaryRamBase
);
965 Private
->HeapOffsetPositive
= FALSE
;
966 Private
->HeapOffset
= (UINTN
)((UINTN
)SecCoreData
->PeiTemporaryRamBase
- BaseOfNewHeap
);
969 DEBUG ((EFI_D_INFO
, "Heap Offset = 0x%lX Stack Offset = 0x%lX\n", (UINT64
) Private
->HeapOffset
, (UINT64
) Private
->StackOffset
));
972 // Caculate new HandOffTable and PrivateData address in permanent memory's stack
974 if (StackOffsetPositive
) {
975 SecCoreData
= (CONST EFI_SEC_PEI_HAND_OFF
*)((UINTN
)(VOID
*)SecCoreData
+ StackOffset
);
976 Private
= (PEI_CORE_INSTANCE
*)((UINTN
)(VOID
*)Private
+ StackOffset
);
978 SecCoreData
= (CONST EFI_SEC_PEI_HAND_OFF
*)((UINTN
)(VOID
*)SecCoreData
- StackOffset
);
979 Private
= (PEI_CORE_INSTANCE
*)((UINTN
)(VOID
*)Private
- StackOffset
);
983 // Temporary Ram Support PPI is provided by platform, it will copy
984 // temporary memory to permenent memory and do stack switching.
985 // After invoking Temporary Ram Support PPI, the following code's
986 // stack is in permanent memory.
988 TemporaryRamSupportPpi
->TemporaryRamMigration (
991 (EFI_PHYSICAL_ADDRESS
)(UINTN
)(TopOfNewStack
- TemporaryStackSize
),
998 PeiCore (SecCoreData
, NULL
, Private
);
1001 // Migrate the PEI Services Table pointer from temporary RAM to permanent RAM.
1003 MigratePeiServicesTablePointer ();
1008 BaseOfNewHeap
= TopOfNewStack
;
1009 HoleMemBase
= TopOfNewStack
;
1010 HoleMemSize
= TemporaryRamSize
- PeiTemporaryRamSize
- TemporaryStackSize
;
1011 if (HoleMemSize
!= 0) {
1013 // Make sure HOB List start address is 8 byte alignment.
1015 BaseOfNewHeap
= ALIGN_VALUE (BaseOfNewHeap
+ HoleMemSize
, 8);
1017 if (BaseOfNewHeap
>= (UINTN
)SecCoreData
->PeiTemporaryRamBase
) {
1018 Private
->HeapOffsetPositive
= TRUE
;
1019 Private
->HeapOffset
= (UINTN
)(BaseOfNewHeap
- (UINTN
)SecCoreData
->PeiTemporaryRamBase
);
1021 Private
->HeapOffsetPositive
= FALSE
;
1022 Private
->HeapOffset
= (UINTN
)((UINTN
)SecCoreData
->PeiTemporaryRamBase
- BaseOfNewHeap
);
1025 DEBUG ((EFI_D_INFO
, "Heap Offset = 0x%lX Stack Offset = 0x%lX\n", (UINT64
) Private
->HeapOffset
, (UINT64
) Private
->StackOffset
));
1030 HeapTemporaryRamSize
= (UINTN
) (Private
->HobList
.HandoffInformationTable
->EfiFreeMemoryBottom
- Private
->HobList
.HandoffInformationTable
->EfiMemoryBottom
);
1031 ASSERT (BaseOfNewHeap
+ HeapTemporaryRamSize
<= Private
->FreePhysicalMemoryTop
);
1032 CopyMem ((UINT8
*) (UINTN
) BaseOfNewHeap
, (UINT8
*) PeiTemporaryRamBase
, HeapTemporaryRamSize
);
1037 CopyMem ((UINT8
*) (UINTN
) (TopOfNewStack
- TemporaryStackSize
), TemporaryStackBase
, TemporaryStackSize
);
1040 // Copy Hole Range Data
1041 // Convert PPI from Hole.
1043 if (HoleMemSize
!= 0) {
1047 if (PeiTemporaryRamBase
< TemporaryStackBase
) {
1048 TempBase1
= (EFI_PHYSICAL_ADDRESS
) (UINTN
) PeiTemporaryRamBase
;
1049 TempSize1
= PeiTemporaryRamSize
;
1050 TempBase2
= (EFI_PHYSICAL_ADDRESS
) (UINTN
) TemporaryStackBase
;
1051 TempSize2
= TemporaryStackSize
;
1053 TempBase1
= (EFI_PHYSICAL_ADDRESS
) (UINTN
) TemporaryStackBase
;
1054 TempSize1
= TemporaryStackSize
;
1055 TempBase2
=(EFI_PHYSICAL_ADDRESS
) (UINTN
) PeiTemporaryRamBase
;
1056 TempSize2
= PeiTemporaryRamSize
;
1058 if (TemporaryRamBase
< TempBase1
) {
1059 Private
->HoleData
[0].Base
= TemporaryRamBase
;
1060 Private
->HoleData
[0].Size
= (UINTN
) (TempBase1
- TemporaryRamBase
);
1062 if (TempBase1
+ TempSize1
< TempBase2
) {
1063 Private
->HoleData
[1].Base
= TempBase1
+ TempSize1
;
1064 Private
->HoleData
[1].Size
= (UINTN
) (TempBase2
- TempBase1
- TempSize1
);
1066 if (TempBase2
+ TempSize2
< TemporaryRamBase
+ TemporaryRamSize
) {
1067 Private
->HoleData
[2].Base
= TempBase2
+ TempSize2
;
1068 Private
->HoleData
[2].Size
= (UINTN
) (TemporaryRamBase
+ TemporaryRamSize
- TempBase2
- TempSize2
);
1072 // Copy Hole Range data.
1074 for (Index
= 0; Index
< HOLE_MAX_NUMBER
; Index
++) {
1075 if (Private
->HoleData
[Index
].Size
> 0) {
1076 if (HoleMemBase
> Private
->HoleData
[Index
].Base
) {
1077 Private
->HoleData
[Index
].OffsetPositive
= TRUE
;
1078 Private
->HoleData
[Index
].Offset
= (UINTN
) (HoleMemBase
- Private
->HoleData
[Index
].Base
);
1080 Private
->HoleData
[Index
].OffsetPositive
= FALSE
;
1081 Private
->HoleData
[Index
].Offset
= (UINTN
) (Private
->HoleData
[Index
].Base
- HoleMemBase
);
1083 CopyMem ((VOID
*) (UINTN
) HoleMemBase
, (VOID
*) (UINTN
) Private
->HoleData
[Index
].Base
, Private
->HoleData
[Index
].Size
);
1084 HoleMemBase
= HoleMemBase
+ Private
->HoleData
[Index
].Size
;
1093 (SWITCH_STACK_ENTRY_POINT
)(UINTN
)PeiCoreEntry
,
1094 (VOID
*) SecCoreData
,
1096 (VOID
*) (UINTN
) TopOfNewStack
1101 // Code should not come here
1107 // Process the Notify list and dispatch any notifies for
1108 // newly installed PPIs.
1110 ProcessNotifyList (Private
);
1112 if ((Private
->PeiMemoryInstalled
) && (Private
->Fv
[FvCount
].PeimState
[PeimCount
] == PEIM_STATE_REGISITER_FOR_SHADOW
) && \
1113 (Private
->HobList
.HandoffInformationTable
->BootMode
!= BOOT_ON_S3_RESUME
|| PcdGetBool (PcdShadowPeimOnS3Boot
))) {
1115 // If memory is availble we shadow images by default for performance reasons.
1116 // We call the entry point a 2nd time so the module knows it's shadowed.
1118 //PERF_START (PeiServices, L"PEIM", PeimFileHandle, 0);
1119 ASSERT (PeimEntryPoint
!= NULL
);
1120 PeimEntryPoint (PeimFileHandle
, (const EFI_PEI_SERVICES
**) PeiServices
);
1121 //PERF_END (PeiServices, L"PEIM", PeimFileHandle, 0);
1124 // PEIM_STATE_REGISITER_FOR_SHADOW move to PEIM_STATE_DONE
1126 Private
->Fv
[FvCount
].PeimState
[PeimCount
]++;
1129 // Process the Notify list and dispatch any notifies for
1130 // newly installed PPIs.
1132 ProcessNotifyList (Private
);
1139 // We set to NULL here to optimize the 2nd entry to this routine after
1140 // memory is found. This reprevents rescanning of the FV. We set to
1141 // NULL here so we start at the begining of the next FV
1143 Private
->CurrentFileHandle
= NULL
;
1144 Private
->CurrentPeimCount
= 0;
1146 // Before walking through the next FV,Private->CurrentFvFileHandles[]should set to NULL
1148 SetMem (Private
->CurrentFvFileHandles
, sizeof (EFI_PEI_FILE_HANDLE
) * PcdGet32 (PcdPeiCoreMaxPeimPerFv
), 0);
1152 // Before making another pass, we should set Private->CurrentPeimFvCount =0 to go
1153 // through all the FV.
1155 Private
->CurrentPeimFvCount
= 0;
1158 // PeimNeedingDispatch being TRUE means we found a PEIM that did not get
1159 // dispatched. So we need to make another pass
1161 // PeimDispatchOnThisPass being TRUE means we dispatched a PEIM on this
1162 // pass. If we did not dispatch a PEIM there is no point in trying again
1163 // as it will fail the next time too (nothing has changed).
1165 } while (Private
->PeimNeedingDispatch
&& Private
->PeimDispatchOnThisPass
);
1170 Initialize the Dispatcher's data members
1172 @param PrivateData PeiCore's private data structure
1173 @param OldCoreData Old data from SecCore
1174 NULL if being run in non-permament memory mode.
1175 @param SecCoreData Points to a data structure containing information about the PEI core's operating
1176 environment, such as the size and location of temporary RAM, the stack location and
1183 InitializeDispatcherData (
1184 IN PEI_CORE_INSTANCE
*PrivateData
,
1185 IN PEI_CORE_INSTANCE
*OldCoreData
,
1186 IN CONST EFI_SEC_PEI_HAND_OFF
*SecCoreData
1189 if (OldCoreData
== NULL
) {
1190 PrivateData
->PeimDispatcherReenter
= FALSE
;
1191 PeiInitializeFv (PrivateData
, SecCoreData
);
1193 PeiReinitializeFv (PrivateData
);
1200 This routine parses the Dependency Expression, if available, and
1201 decides if the module can be executed.
1204 @param Private PeiCore's private data structure
1205 @param FileHandle PEIM's file handle
1206 @param PeimCount Peim count in all dispatched PEIMs.
1208 @retval TRUE Can be dispatched
1209 @retval FALSE Cannot be dispatched
1214 IN PEI_CORE_INSTANCE
*Private
,
1215 IN EFI_PEI_FILE_HANDLE FileHandle
,
1221 EFI_FV_FILE_INFO FileInfo
;
1223 Status
= PeiServicesFfsGetFileInfo (FileHandle
, &FileInfo
);
1224 if (EFI_ERROR (Status
)) {
1225 DEBUG ((DEBUG_DISPATCH
, "Evaluate PEI DEPEX for FFS(Unknown)\n"));
1227 DEBUG ((DEBUG_DISPATCH
, "Evaluate PEI DEPEX for FFS(%g)\n", &FileInfo
.FileName
));
1230 if (PeimCount
< Private
->AprioriCount
) {
1232 // If its in the A priori file then we set Depex to TRUE
1234 DEBUG ((DEBUG_DISPATCH
, " RESULT = TRUE (Apriori)\n"));
1239 // Depex section not in the encapsulated section.
1241 Status
= PeiServicesFfsFindSectionData (
1242 EFI_SECTION_PEI_DEPEX
,
1247 if (EFI_ERROR (Status
)) {
1249 // If there is no DEPEX, assume the module can be executed
1251 DEBUG ((DEBUG_DISPATCH
, " RESULT = TRUE (No DEPEX)\n"));
1256 // Evaluate a given DEPEX
1258 return PeimDispatchReadiness (&Private
->Ps
, DepexData
);
1262 This routine enable a PEIM to register itself to shadow when PEI Foundation
1263 discovery permanent memory.
1265 @param FileHandle File handle of a PEIM.
1267 @retval EFI_NOT_FOUND The file handle doesn't point to PEIM itself.
1268 @retval EFI_ALREADY_STARTED Indicate that the PEIM has been registered itself.
1269 @retval EFI_SUCCESS Successfully to register itself.
1274 PeiRegisterForShadow (
1275 IN EFI_PEI_FILE_HANDLE FileHandle
1278 PEI_CORE_INSTANCE
*Private
;
1279 Private
= PEI_CORE_INSTANCE_FROM_PS_THIS (GetPeiServicesTablePointer ());
1281 if (Private
->CurrentFileHandle
!= FileHandle
) {
1283 // The FileHandle must be for the current PEIM
1285 return EFI_NOT_FOUND
;
1288 if (Private
->Fv
[Private
->CurrentPeimFvCount
].PeimState
[Private
->CurrentPeimCount
] >= PEIM_STATE_REGISITER_FOR_SHADOW
) {
1290 // If the PEIM has already entered the PEIM_STATE_REGISTER_FOR_SHADOW or PEIM_STATE_DONE then it's already been started
1292 return EFI_ALREADY_STARTED
;
1295 Private
->Fv
[Private
->CurrentPeimFvCount
].PeimState
[Private
->CurrentPeimCount
] = PEIM_STATE_REGISITER_FOR_SHADOW
;