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Add UEFI 2.5 properties table support in DXE core.
[mirror_edk2.git] / MdeModulePkg / Core / Dxe / Image / Image.c
1 /** @file
2 Core image handling services to load and unload PeImage.
3
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
9
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.
12
13 **/
14
15 #include "DxeMain.h"
16 #include "Image.h"
17
18 //
19 // Module Globals
20 //
21 LOADED_IMAGE_PRIVATE_DATA *mCurrentImage = NULL;
22
23 LOAD_PE32_IMAGE_PRIVATE_DATA mLoadPe32PrivateData = {
24 LOAD_PE32_IMAGE_PRIVATE_DATA_SIGNATURE,
25 NULL,
26 {
27 CoreLoadImageEx,
28 CoreUnloadImageEx
29 }
30 };
31
32
33 //
34 // This code is needed to build the Image handle for the DXE Core
35 //
36 LOADED_IMAGE_PRIVATE_DATA mCorePrivateImage = {
37 LOADED_IMAGE_PRIVATE_DATA_SIGNATURE, // Signature
38 NULL, // Image handle
39 EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER, // Image type
40 TRUE, // If entrypoint has been called
41 NULL, // EntryPoint
42 {
43 EFI_LOADED_IMAGE_INFORMATION_REVISION, // Revision
44 NULL, // Parent handle
45 NULL, // System handle
46
47 NULL, // Device handle
48 NULL, // File path
49 NULL, // Reserved
50
51 0, // LoadOptionsSize
52 NULL, // LoadOptions
53
54 NULL, // ImageBase
55 0, // ImageSize
56 EfiBootServicesCode, // ImageCodeType
57 EfiBootServicesData // ImageDataType
58 },
59 (EFI_PHYSICAL_ADDRESS)0, // ImageBasePage
60 0, // NumberOfPages
61 NULL, // FixupData
62 0, // Tpl
63 EFI_SUCCESS, // Status
64 0, // ExitDataSize
65 NULL, // ExitData
66 NULL, // JumpBuffer
67 NULL, // JumpContext
68 0, // Machine
69 NULL, // Ebc
70 NULL, // RuntimeData
71 NULL // LoadedImageDevicePath
72 };
73 //
74 // The field is define for Loading modules at fixed address feature to tracker the PEI code
75 // memory range usage. It is a bit mapped array in which every bit indicates the correspoding memory page
76 // available or not.
77 //
78 GLOBAL_REMOVE_IF_UNREFERENCED UINT64 *mDxeCodeMemoryRangeUsageBitMap=NULL;
79
80 typedef struct {
81 UINT16 MachineType;
82 CHAR16 *MachineTypeName;
83 } MACHINE_TYPE_INFO;
84
85 //
86 // EBC machine is not listed in this table, because EBC is in the default supported scopes of other machine type.
87 //
88 GLOBAL_REMOVE_IF_UNREFERENCED MACHINE_TYPE_INFO mMachineTypeInfo[] = {
89 {EFI_IMAGE_MACHINE_IA32, L"IA32"},
90 {EFI_IMAGE_MACHINE_IA64, L"IA64"},
91 {EFI_IMAGE_MACHINE_X64, L"X64"},
92 {EFI_IMAGE_MACHINE_ARMTHUMB_MIXED, L"ARM"}
93 };
94
95 UINT16 mDxeCoreImageMachineType = 0;
96
97 /**
98 Return machine type name.
99
100 @param MachineType The machine type
101
102 @return machine type name
103 **/
104 CHAR16 *
105 GetMachineTypeName (
106 UINT16 MachineType
107 )
108 {
109 UINTN Index;
110
111 for (Index = 0; Index < sizeof(mMachineTypeInfo)/sizeof(mMachineTypeInfo[0]); Index++) {
112 if (mMachineTypeInfo[Index].MachineType == MachineType) {
113 return mMachineTypeInfo[Index].MachineTypeName;
114 }
115 }
116
117 return L"<Unknown>";
118 }
119
120 /**
121 Add the Image Services to EFI Boot Services Table and install the protocol
122 interfaces for this image.
123
124 @param HobStart The HOB to initialize
125
126 @return Status code.
127
128 **/
129 EFI_STATUS
130 CoreInitializeImageServices (
131 IN VOID *HobStart
132 )
133 {
134 EFI_STATUS Status;
135 LOADED_IMAGE_PRIVATE_DATA *Image;
136 EFI_PHYSICAL_ADDRESS DxeCoreImageBaseAddress;
137 UINT64 DxeCoreImageLength;
138 VOID *DxeCoreEntryPoint;
139 EFI_PEI_HOB_POINTERS DxeCoreHob;
140
141 //
142 // Searching for image hob
143 //
144 DxeCoreHob.Raw = HobStart;
145 while ((DxeCoreHob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, DxeCoreHob.Raw)) != NULL) {
146 if (CompareGuid (&DxeCoreHob.MemoryAllocationModule->MemoryAllocationHeader.Name, &gEfiHobMemoryAllocModuleGuid)) {
147 //
148 // Find Dxe Core HOB
149 //
150 break;
151 }
152 DxeCoreHob.Raw = GET_NEXT_HOB (DxeCoreHob);
153 }
154 ASSERT (DxeCoreHob.Raw != NULL);
155
156 DxeCoreImageBaseAddress = DxeCoreHob.MemoryAllocationModule->MemoryAllocationHeader.MemoryBaseAddress;
157 DxeCoreImageLength = DxeCoreHob.MemoryAllocationModule->MemoryAllocationHeader.MemoryLength;
158 DxeCoreEntryPoint = (VOID *) (UINTN) DxeCoreHob.MemoryAllocationModule->EntryPoint;
159 gDxeCoreFileName = &DxeCoreHob.MemoryAllocationModule->ModuleName;
160
161 //
162 // Initialize the fields for an internal driver
163 //
164 Image = &mCorePrivateImage;
165
166 Image->EntryPoint = (EFI_IMAGE_ENTRY_POINT)(UINTN)DxeCoreEntryPoint;
167 Image->ImageBasePage = DxeCoreImageBaseAddress;
168 Image->NumberOfPages = (UINTN)(EFI_SIZE_TO_PAGES((UINTN)(DxeCoreImageLength)));
169 Image->Tpl = gEfiCurrentTpl;
170 Image->Info.SystemTable = gDxeCoreST;
171 Image->Info.ImageBase = (VOID *)(UINTN)DxeCoreImageBaseAddress;
172 Image->Info.ImageSize = DxeCoreImageLength;
173
174 //
175 // Install the protocol interfaces for this image
176 //
177 Status = CoreInstallProtocolInterface (
178 &Image->Handle,
179 &gEfiLoadedImageProtocolGuid,
180 EFI_NATIVE_INTERFACE,
181 &Image->Info
182 );
183 ASSERT_EFI_ERROR (Status);
184
185 mCurrentImage = Image;
186
187 //
188 // Fill in DXE globals
189 //
190 mDxeCoreImageMachineType = PeCoffLoaderGetMachineType (Image->Info.ImageBase);
191 gDxeCoreImageHandle = Image->Handle;
192 gDxeCoreLoadedImage = &Image->Info;
193
194 if (FeaturePcdGet (PcdFrameworkCompatibilitySupport)) {
195 //
196 // Export DXE Core PE Loader functionality for backward compatibility.
197 //
198 Status = CoreInstallProtocolInterface (
199 &mLoadPe32PrivateData.Handle,
200 &gEfiLoadPeImageProtocolGuid,
201 EFI_NATIVE_INTERFACE,
202 &mLoadPe32PrivateData.Pe32Image
203 );
204 }
205
206 return Status;
207 }
208
209 /**
210 Read image file (specified by UserHandle) into user specified buffer with specified offset
211 and length.
212
213 @param UserHandle Image file handle
214 @param Offset Offset to the source file
215 @param ReadSize For input, pointer of size to read; For output,
216 pointer of size actually read.
217 @param Buffer Buffer to write into
218
219 @retval EFI_SUCCESS Successfully read the specified part of file
220 into buffer.
221
222 **/
223 EFI_STATUS
224 EFIAPI
225 CoreReadImageFile (
226 IN VOID *UserHandle,
227 IN UINTN Offset,
228 IN OUT UINTN *ReadSize,
229 OUT VOID *Buffer
230 )
231 {
232 UINTN EndPosition;
233 IMAGE_FILE_HANDLE *FHand;
234
235 if (UserHandle == NULL || ReadSize == NULL || Buffer == NULL) {
236 return EFI_INVALID_PARAMETER;
237 }
238
239 if (MAX_ADDRESS - Offset < *ReadSize) {
240 return EFI_INVALID_PARAMETER;
241 }
242
243 FHand = (IMAGE_FILE_HANDLE *)UserHandle;
244 ASSERT (FHand->Signature == IMAGE_FILE_HANDLE_SIGNATURE);
245
246 //
247 // Move data from our local copy of the file
248 //
249 EndPosition = Offset + *ReadSize;
250 if (EndPosition > FHand->SourceSize) {
251 *ReadSize = (UINT32)(FHand->SourceSize - Offset);
252 }
253 if (Offset >= FHand->SourceSize) {
254 *ReadSize = 0;
255 }
256
257 CopyMem (Buffer, (CHAR8 *)FHand->Source + Offset, *ReadSize);
258 return EFI_SUCCESS;
259 }
260 /**
261 To check memory usage bit map arry to figure out if the memory range the image will be loaded in is available or not. If
262 memory range is avaliable, the function will mark the correponding bits to 1 which indicates the memory range is used.
263 The function is only invoked when load modules at fixed address feature is enabled.
264
265 @param ImageBase The base addres the image will be loaded at.
266 @param ImageSize The size of the image
267
268 @retval EFI_SUCCESS The memory range the image will be loaded in is available
269 @retval EFI_NOT_FOUND The memory range the image will be loaded in is not available
270 **/
271 EFI_STATUS
272 CheckAndMarkFixLoadingMemoryUsageBitMap (
273 IN EFI_PHYSICAL_ADDRESS ImageBase,
274 IN UINTN ImageSize
275 )
276 {
277 UINT32 DxeCodePageNumber;
278 UINT64 DxeCodeSize;
279 EFI_PHYSICAL_ADDRESS DxeCodeBase;
280 UINTN BaseOffsetPageNumber;
281 UINTN TopOffsetPageNumber;
282 UINTN Index;
283 //
284 // The DXE code range includes RuntimeCodePage range and Boot time code range.
285 //
286 DxeCodePageNumber = PcdGet32(PcdLoadFixAddressRuntimeCodePageNumber);
287 DxeCodePageNumber += PcdGet32(PcdLoadFixAddressBootTimeCodePageNumber);
288 DxeCodeSize = EFI_PAGES_TO_SIZE(DxeCodePageNumber);
289 DxeCodeBase = gLoadModuleAtFixAddressConfigurationTable.DxeCodeTopAddress - DxeCodeSize;
290
291 //
292 // If the memory usage bit map is not initialized, do it. Every bit in the array
293 // indicate the status of the corresponding memory page, available or not
294 //
295 if (mDxeCodeMemoryRangeUsageBitMap == NULL) {
296 mDxeCodeMemoryRangeUsageBitMap = AllocateZeroPool(((DxeCodePageNumber/64) + 1)*sizeof(UINT64));
297 }
298 //
299 // If the Dxe code memory range is not allocated or the bit map array allocation failed, return EFI_NOT_FOUND
300 //
301 if (!gLoadFixedAddressCodeMemoryReady || mDxeCodeMemoryRangeUsageBitMap == NULL) {
302 return EFI_NOT_FOUND;
303 }
304 //
305 // Test the memory range for loading the image in the DXE code range.
306 //
307 if (gLoadModuleAtFixAddressConfigurationTable.DxeCodeTopAddress < ImageBase + ImageSize ||
308 DxeCodeBase > ImageBase) {
309 return EFI_NOT_FOUND;
310 }
311 //
312 // Test if the memory is avalaible or not.
313 //
314 BaseOffsetPageNumber = (UINTN)EFI_SIZE_TO_PAGES((UINT32)(ImageBase - DxeCodeBase));
315 TopOffsetPageNumber = (UINTN)EFI_SIZE_TO_PAGES((UINT32)(ImageBase + ImageSize - DxeCodeBase));
316 for (Index = BaseOffsetPageNumber; Index < TopOffsetPageNumber; Index ++) {
317 if ((mDxeCodeMemoryRangeUsageBitMap[Index / 64] & LShiftU64(1, (Index % 64))) != 0) {
318 //
319 // This page is already used.
320 //
321 return EFI_NOT_FOUND;
322 }
323 }
324
325 //
326 // Being here means the memory range is available. So mark the bits for the memory range
327 //
328 for (Index = BaseOffsetPageNumber; Index < TopOffsetPageNumber; Index ++) {
329 mDxeCodeMemoryRangeUsageBitMap[Index / 64] |= LShiftU64(1, (Index % 64));
330 }
331 return EFI_SUCCESS;
332 }
333 /**
334
335 Get the fixed loadding address from image header assigned by build tool. This function only be called
336 when Loading module at Fixed address feature enabled.
337
338 @param ImageContext Pointer to the image context structure that describes the PE/COFF
339 image that needs to be examined by this function.
340 @retval EFI_SUCCESS An fixed loading address is assigned to this image by build tools .
341 @retval EFI_NOT_FOUND The image has no assigned fixed loadding address.
342
343 **/
344 EFI_STATUS
345 GetPeCoffImageFixLoadingAssignedAddress(
346 IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
347 )
348 {
349 UINTN SectionHeaderOffset;
350 EFI_STATUS Status;
351 EFI_IMAGE_SECTION_HEADER SectionHeader;
352 EFI_IMAGE_OPTIONAL_HEADER_UNION *ImgHdr;
353 UINT16 Index;
354 UINTN Size;
355 UINT16 NumberOfSections;
356 IMAGE_FILE_HANDLE *Handle;
357 UINT64 ValueInSectionHeader;
358
359
360 Status = EFI_NOT_FOUND;
361
362 //
363 // Get PeHeader pointer
364 //
365 Handle = (IMAGE_FILE_HANDLE*)ImageContext->Handle;
366 ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)((CHAR8* )Handle->Source + ImageContext->PeCoffHeaderOffset);
367 SectionHeaderOffset = (UINTN)(
368 ImageContext->PeCoffHeaderOffset +
369 sizeof (UINT32) +
370 sizeof (EFI_IMAGE_FILE_HEADER) +
371 ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader
372 );
373 NumberOfSections = ImgHdr->Pe32.FileHeader.NumberOfSections;
374
375 //
376 // Get base address from the first section header that doesn't point to code section.
377 //
378 for (Index = 0; Index < NumberOfSections; Index++) {
379 //
380 // Read section header from file
381 //
382 Size = sizeof (EFI_IMAGE_SECTION_HEADER);
383 Status = ImageContext->ImageRead (
384 ImageContext->Handle,
385 SectionHeaderOffset,
386 &Size,
387 &SectionHeader
388 );
389 if (EFI_ERROR (Status)) {
390 return Status;
391 }
392 if (Size != sizeof (EFI_IMAGE_SECTION_HEADER)) {
393 return EFI_NOT_FOUND;
394 }
395
396 Status = EFI_NOT_FOUND;
397
398 if ((SectionHeader.Characteristics & EFI_IMAGE_SCN_CNT_CODE) == 0) {
399 //
400 // Build tool will save the address in PointerToRelocations & PointerToLineNumbers fields in the first section header
401 // that doesn't point to code section in image header, as well as ImageBase field of image header. And there is an
402 // assumption that when the feature is enabled, if a module is assigned a loading address by tools, PointerToRelocations
403 // & PointerToLineNumbers fields should NOT be Zero, or else, these 2 fileds should be set to Zero
404 //
405 ValueInSectionHeader = ReadUnaligned64((UINT64*)&SectionHeader.PointerToRelocations);
406 if (ValueInSectionHeader != 0) {
407 //
408 // When the feature is configured as load module at fixed absolute address, the ImageAddress field of ImageContext
409 // hold the spcified address. If the feature is configured as load module at fixed offset, ImageAddress hold an offset
410 // relative to top address
411 //
412 if ((INT64)PcdGet64(PcdLoadModuleAtFixAddressEnable) < 0) {
413 ImageContext->ImageAddress = gLoadModuleAtFixAddressConfigurationTable.DxeCodeTopAddress + (INT64)(INTN)ImageContext->ImageAddress;
414 }
415 //
416 // Check if the memory range is avaliable.
417 //
418 Status = CheckAndMarkFixLoadingMemoryUsageBitMap (ImageContext->ImageAddress, (UINTN)(ImageContext->ImageSize + ImageContext->SectionAlignment));
419 }
420 break;
421 }
422 SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);
423 }
424 DEBUG ((EFI_D_INFO|EFI_D_LOAD, "LOADING MODULE FIXED INFO: Loading module at fixed address 0x%11p. Status = %r \n", (VOID *)(UINTN)(ImageContext->ImageAddress), Status));
425 return Status;
426 }
427 /**
428 Loads, relocates, and invokes a PE/COFF image
429
430 @param BootPolicy If TRUE, indicates that the request originates
431 from the boot manager, and that the boot
432 manager is attempting to load FilePath as a
433 boot selection.
434 @param Pe32Handle The handle of PE32 image
435 @param Image PE image to be loaded
436 @param DstBuffer The buffer to store the image
437 @param EntryPoint A pointer to the entry point
438 @param Attribute The bit mask of attributes to set for the load
439 PE image
440
441 @retval EFI_SUCCESS The file was loaded, relocated, and invoked
442 @retval EFI_OUT_OF_RESOURCES There was not enough memory to load and
443 relocate the PE/COFF file
444 @retval EFI_INVALID_PARAMETER Invalid parameter
445 @retval EFI_BUFFER_TOO_SMALL Buffer for image is too small
446
447 **/
448 EFI_STATUS
449 CoreLoadPeImage (
450 IN BOOLEAN BootPolicy,
451 IN VOID *Pe32Handle,
452 IN LOADED_IMAGE_PRIVATE_DATA *Image,
453 IN EFI_PHYSICAL_ADDRESS DstBuffer OPTIONAL,
454 OUT EFI_PHYSICAL_ADDRESS *EntryPoint OPTIONAL,
455 IN UINT32 Attribute
456 )
457 {
458 EFI_STATUS Status;
459 BOOLEAN DstBufAlocated;
460 UINTN Size;
461
462 ZeroMem (&Image->ImageContext, sizeof (Image->ImageContext));
463
464 Image->ImageContext.Handle = Pe32Handle;
465 Image->ImageContext.ImageRead = (PE_COFF_LOADER_READ_FILE)CoreReadImageFile;
466
467 //
468 // Get information about the image being loaded
469 //
470 Status = PeCoffLoaderGetImageInfo (&Image->ImageContext);
471 if (EFI_ERROR (Status)) {
472 return Status;
473 }
474
475 if (!EFI_IMAGE_MACHINE_TYPE_SUPPORTED (Image->ImageContext.Machine)) {
476 if (!EFI_IMAGE_MACHINE_CROSS_TYPE_SUPPORTED (Image->ImageContext.Machine)) {
477 //
478 // The PE/COFF loader can support loading image types that can be executed.
479 // If we loaded an image type that we can not execute return EFI_UNSUPORTED.
480 //
481 DEBUG ((EFI_D_ERROR, "Image type %s can't be loaded ", GetMachineTypeName(Image->ImageContext.Machine)));
482 DEBUG ((EFI_D_ERROR, "on %s UEFI system.\n", GetMachineTypeName(mDxeCoreImageMachineType)));
483 return EFI_UNSUPPORTED;
484 }
485 }
486
487 //
488 // Set EFI memory type based on ImageType
489 //
490 switch (Image->ImageContext.ImageType) {
491 case EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION:
492 Image->ImageContext.ImageCodeMemoryType = EfiLoaderCode;
493 Image->ImageContext.ImageDataMemoryType = EfiLoaderData;
494 break;
495 case EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER:
496 Image->ImageContext.ImageCodeMemoryType = EfiBootServicesCode;
497 Image->ImageContext.ImageDataMemoryType = EfiBootServicesData;
498 break;
499 case EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER:
500 case EFI_IMAGE_SUBSYSTEM_SAL_RUNTIME_DRIVER:
501 Image->ImageContext.ImageCodeMemoryType = EfiRuntimeServicesCode;
502 Image->ImageContext.ImageDataMemoryType = EfiRuntimeServicesData;
503 break;
504 default:
505 Image->ImageContext.ImageError = IMAGE_ERROR_INVALID_SUBSYSTEM;
506 return EFI_UNSUPPORTED;
507 }
508
509 //
510 // Allocate memory of the correct memory type aligned on the required image boundry
511 //
512 DstBufAlocated = FALSE;
513 if (DstBuffer == 0) {
514 //
515 // Allocate Destination Buffer as caller did not pass it in
516 //
517
518 if (Image->ImageContext.SectionAlignment > EFI_PAGE_SIZE) {
519 Size = (UINTN)Image->ImageContext.ImageSize + Image->ImageContext.SectionAlignment;
520 } else {
521 Size = (UINTN)Image->ImageContext.ImageSize;
522 }
523
524 Image->NumberOfPages = EFI_SIZE_TO_PAGES (Size);
525
526 //
527 // If the image relocations have not been stripped, then load at any address.
528 // Otherwise load at the address at which it was linked.
529 //
530 // Memory below 1MB should be treated reserved for CSM and there should be
531 // no modules whose preferred load addresses are below 1MB.
532 //
533 Status = EFI_OUT_OF_RESOURCES;
534 //
535 // If Loading Module At Fixed Address feature is enabled, the module should be loaded to
536 // a specified address.
537 //
538 if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0 ) {
539 Status = GetPeCoffImageFixLoadingAssignedAddress (&(Image->ImageContext));
540
541 if (EFI_ERROR (Status)) {
542 //
543 // If the code memory is not ready, invoke CoreAllocatePage with AllocateAnyPages to load the driver.
544 //
545 DEBUG ((EFI_D_INFO|EFI_D_LOAD, "LOADING MODULE FIXED ERROR: Loading module at fixed address failed since specified memory is not available.\n"));
546
547 Status = CoreAllocatePages (
548 AllocateAnyPages,
549 (EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
550 Image->NumberOfPages,
551 &Image->ImageContext.ImageAddress
552 );
553 }
554 } else {
555 if (Image->ImageContext.ImageAddress >= 0x100000 || Image->ImageContext.RelocationsStripped) {
556 Status = CoreAllocatePages (
557 AllocateAddress,
558 (EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
559 Image->NumberOfPages,
560 &Image->ImageContext.ImageAddress
561 );
562 }
563 if (EFI_ERROR (Status) && !Image->ImageContext.RelocationsStripped) {
564 Status = CoreAllocatePages (
565 AllocateAnyPages,
566 (EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
567 Image->NumberOfPages,
568 &Image->ImageContext.ImageAddress
569 );
570 }
571 }
572 if (EFI_ERROR (Status)) {
573 return Status;
574 }
575 DstBufAlocated = TRUE;
576 } else {
577 //
578 // Caller provided the destination buffer
579 //
580
581 if (Image->ImageContext.RelocationsStripped && (Image->ImageContext.ImageAddress != DstBuffer)) {
582 //
583 // If the image relocations were stripped, and the caller provided a
584 // destination buffer address that does not match the address that the
585 // image is linked at, then the image cannot be loaded.
586 //
587 return EFI_INVALID_PARAMETER;
588 }
589
590 if (Image->NumberOfPages != 0 &&
591 Image->NumberOfPages <
592 (EFI_SIZE_TO_PAGES ((UINTN)Image->ImageContext.ImageSize + Image->ImageContext.SectionAlignment))) {
593 Image->NumberOfPages = EFI_SIZE_TO_PAGES ((UINTN)Image->ImageContext.ImageSize + Image->ImageContext.SectionAlignment);
594 return EFI_BUFFER_TOO_SMALL;
595 }
596
597 Image->NumberOfPages = EFI_SIZE_TO_PAGES ((UINTN)Image->ImageContext.ImageSize + Image->ImageContext.SectionAlignment);
598 Image->ImageContext.ImageAddress = DstBuffer;
599 }
600
601 Image->ImageBasePage = Image->ImageContext.ImageAddress;
602 if (!Image->ImageContext.IsTeImage) {
603 Image->ImageContext.ImageAddress =
604 (Image->ImageContext.ImageAddress + Image->ImageContext.SectionAlignment - 1) &
605 ~((UINTN)Image->ImageContext.SectionAlignment - 1);
606 }
607
608 //
609 // Load the image from the file into the allocated memory
610 //
611 Status = PeCoffLoaderLoadImage (&Image->ImageContext);
612 if (EFI_ERROR (Status)) {
613 goto Done;
614 }
615
616 //
617 // If this is a Runtime Driver, then allocate memory for the FixupData that
618 // is used to relocate the image when SetVirtualAddressMap() is called. The
619 // relocation is done by the Runtime AP.
620 //
621 if ((Attribute & EFI_LOAD_PE_IMAGE_ATTRIBUTE_RUNTIME_REGISTRATION) != 0) {
622 if (Image->ImageContext.ImageType == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER) {
623 Image->ImageContext.FixupData = AllocateRuntimePool ((UINTN)(Image->ImageContext.FixupDataSize));
624 if (Image->ImageContext.FixupData == NULL) {
625 Status = EFI_OUT_OF_RESOURCES;
626 goto Done;
627 }
628 }
629 }
630
631 //
632 // Relocate the image in memory
633 //
634 Status = PeCoffLoaderRelocateImage (&Image->ImageContext);
635 if (EFI_ERROR (Status)) {
636 goto Done;
637 }
638
639 //
640 // Flush the Instruction Cache
641 //
642 InvalidateInstructionCacheRange ((VOID *)(UINTN)Image->ImageContext.ImageAddress, (UINTN)Image->ImageContext.ImageSize);
643
644 //
645 // Copy the machine type from the context to the image private data. This
646 // is needed during image unload to know if we should call an EBC protocol
647 // to unload the image.
648 //
649 Image->Machine = Image->ImageContext.Machine;
650
651 //
652 // Get the image entry point. If it's an EBC image, then call into the
653 // interpreter to create a thunk for the entry point and use the returned
654 // value for the entry point.
655 //
656 Image->EntryPoint = (EFI_IMAGE_ENTRY_POINT)(UINTN)Image->ImageContext.EntryPoint;
657 if (Image->ImageContext.Machine == EFI_IMAGE_MACHINE_EBC) {
658 //
659 // Locate the EBC interpreter protocol
660 //
661 Status = CoreLocateProtocol (&gEfiEbcProtocolGuid, NULL, (VOID **)&Image->Ebc);
662 if (EFI_ERROR(Status) || Image->Ebc == NULL) {
663 DEBUG ((DEBUG_LOAD | DEBUG_ERROR, "CoreLoadPeImage: There is no EBC interpreter for an EBC image.\n"));
664 goto Done;
665 }
666
667 //
668 // Register a callback for flushing the instruction cache so that created
669 // thunks can be flushed.
670 //
671 Status = Image->Ebc->RegisterICacheFlush (Image->Ebc, (EBC_ICACHE_FLUSH)InvalidateInstructionCacheRange);
672 if (EFI_ERROR(Status)) {
673 goto Done;
674 }
675
676 //
677 // Create a thunk for the image's entry point. This will be the new
678 // entry point for the image.
679 //
680 Status = Image->Ebc->CreateThunk (
681 Image->Ebc,
682 Image->Handle,
683 (VOID *)(UINTN) Image->ImageContext.EntryPoint,
684 (VOID **) &Image->EntryPoint
685 );
686 if (EFI_ERROR(Status)) {
687 goto Done;
688 }
689 }
690
691 //
692 // Fill in the image information for the Loaded Image Protocol
693 //
694 Image->Type = Image->ImageContext.ImageType;
695 Image->Info.ImageBase = (VOID *)(UINTN)Image->ImageContext.ImageAddress;
696 Image->Info.ImageSize = Image->ImageContext.ImageSize;
697 Image->Info.ImageCodeType = (EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType);
698 Image->Info.ImageDataType = (EFI_MEMORY_TYPE) (Image->ImageContext.ImageDataMemoryType);
699 if ((Attribute & EFI_LOAD_PE_IMAGE_ATTRIBUTE_RUNTIME_REGISTRATION) != 0) {
700 if (Image->ImageContext.ImageType == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER) {
701 //
702 // Make a list off all the RT images so we can let the RT AP know about them.
703 //
704 Image->RuntimeData = AllocateRuntimePool (sizeof(EFI_RUNTIME_IMAGE_ENTRY));
705 if (Image->RuntimeData == NULL) {
706 goto Done;
707 }
708 Image->RuntimeData->ImageBase = Image->Info.ImageBase;
709 Image->RuntimeData->ImageSize = (UINT64) (Image->Info.ImageSize);
710 Image->RuntimeData->RelocationData = Image->ImageContext.FixupData;
711 Image->RuntimeData->Handle = Image->Handle;
712 InsertTailList (&gRuntime->ImageHead, &Image->RuntimeData->Link);
713 InsertImageRecord (Image->RuntimeData);
714 }
715 }
716
717 //
718 // Fill in the entry point of the image if it is available
719 //
720 if (EntryPoint != NULL) {
721 *EntryPoint = Image->ImageContext.EntryPoint;
722 }
723
724 //
725 // Print the load address and the PDB file name if it is available
726 //
727
728 DEBUG_CODE_BEGIN ();
729
730 UINTN Index;
731 UINTN StartIndex;
732 CHAR8 EfiFileName[256];
733
734
735 DEBUG ((DEBUG_INFO | DEBUG_LOAD,
736 "Loading driver at 0x%11p EntryPoint=0x%11p ",
737 (VOID *)(UINTN) Image->ImageContext.ImageAddress,
738 FUNCTION_ENTRY_POINT (Image->ImageContext.EntryPoint)));
739
740
741 //
742 // Print Module Name by Pdb file path.
743 // Windows and Unix style file path are all trimmed correctly.
744 //
745 if (Image->ImageContext.PdbPointer != NULL) {
746 StartIndex = 0;
747 for (Index = 0; Image->ImageContext.PdbPointer[Index] != 0; Index++) {
748 if ((Image->ImageContext.PdbPointer[Index] == '\\') || (Image->ImageContext.PdbPointer[Index] == '/')) {
749 StartIndex = Index + 1;
750 }
751 }
752 //
753 // Copy the PDB file name to our temporary string, and replace .pdb with .efi
754 // The PDB file name is limited in the range of 0~255.
755 // If the length is bigger than 255, trim the redudant characters to avoid overflow in array boundary.
756 //
757 for (Index = 0; Index < sizeof (EfiFileName) - 4; Index++) {
758 EfiFileName[Index] = Image->ImageContext.PdbPointer[Index + StartIndex];
759 if (EfiFileName[Index] == 0) {
760 EfiFileName[Index] = '.';
761 }
762 if (EfiFileName[Index] == '.') {
763 EfiFileName[Index + 1] = 'e';
764 EfiFileName[Index + 2] = 'f';
765 EfiFileName[Index + 3] = 'i';
766 EfiFileName[Index + 4] = 0;
767 break;
768 }
769 }
770
771 if (Index == sizeof (EfiFileName) - 4) {
772 EfiFileName[Index] = 0;
773 }
774 DEBUG ((DEBUG_INFO | DEBUG_LOAD, "%a", EfiFileName)); // &Image->ImageContext.PdbPointer[StartIndex]));
775 }
776 DEBUG ((DEBUG_INFO | DEBUG_LOAD, "\n"));
777
778 DEBUG_CODE_END ();
779
780 return EFI_SUCCESS;
781
782 Done:
783
784 //
785 // Free memory.
786 //
787
788 if (DstBufAlocated) {
789 CoreFreePages (Image->ImageContext.ImageAddress, Image->NumberOfPages);
790 }
791
792 if (Image->ImageContext.FixupData != NULL) {
793 CoreFreePool (Image->ImageContext.FixupData);
794 }
795
796 return Status;
797 }
798
799
800
801 /**
802 Get the image's private data from its handle.
803
804 @param ImageHandle The image handle
805
806 @return Return the image private data associated with ImageHandle.
807
808 **/
809 LOADED_IMAGE_PRIVATE_DATA *
810 CoreLoadedImageInfo (
811 IN EFI_HANDLE ImageHandle
812 )
813 {
814 EFI_STATUS Status;
815 EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
816 LOADED_IMAGE_PRIVATE_DATA *Image;
817
818 Status = CoreHandleProtocol (
819 ImageHandle,
820 &gEfiLoadedImageProtocolGuid,
821 (VOID **)&LoadedImage
822 );
823 if (!EFI_ERROR (Status)) {
824 Image = LOADED_IMAGE_PRIVATE_DATA_FROM_THIS (LoadedImage);
825 } else {
826 DEBUG ((DEBUG_LOAD, "CoreLoadedImageInfo: Not an ImageHandle %p\n", ImageHandle));
827 Image = NULL;
828 }
829
830 return Image;
831 }
832
833
834 /**
835 Unloads EFI image from memory.
836
837 @param Image EFI image
838 @param FreePage Free allocated pages
839
840 **/
841 VOID
842 CoreUnloadAndCloseImage (
843 IN LOADED_IMAGE_PRIVATE_DATA *Image,
844 IN BOOLEAN FreePage
845 )
846 {
847 EFI_STATUS Status;
848 UINTN HandleCount;
849 EFI_HANDLE *HandleBuffer;
850 UINTN HandleIndex;
851 EFI_GUID **ProtocolGuidArray;
852 UINTN ArrayCount;
853 UINTN ProtocolIndex;
854 EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfo;
855 UINTN OpenInfoCount;
856 UINTN OpenInfoIndex;
857
858 HandleBuffer = NULL;
859 ProtocolGuidArray = NULL;
860
861 if (Image->Ebc != NULL) {
862 //
863 // If EBC protocol exists we must perform cleanups for this image.
864 //
865 Image->Ebc->UnloadImage (Image->Ebc, Image->Handle);
866 }
867
868 //
869 // Unload image, free Image->ImageContext->ModHandle
870 //
871 PeCoffLoaderUnloadImage (&Image->ImageContext);
872
873 //
874 // Free our references to the image handle
875 //
876 if (Image->Handle != NULL) {
877
878 Status = CoreLocateHandleBuffer (
879 AllHandles,
880 NULL,
881 NULL,
882 &HandleCount,
883 &HandleBuffer
884 );
885 if (!EFI_ERROR (Status)) {
886 for (HandleIndex = 0; HandleIndex < HandleCount; HandleIndex++) {
887 Status = CoreProtocolsPerHandle (
888 HandleBuffer[HandleIndex],
889 &ProtocolGuidArray,
890 &ArrayCount
891 );
892 if (!EFI_ERROR (Status)) {
893 for (ProtocolIndex = 0; ProtocolIndex < ArrayCount; ProtocolIndex++) {
894 Status = CoreOpenProtocolInformation (
895 HandleBuffer[HandleIndex],
896 ProtocolGuidArray[ProtocolIndex],
897 &OpenInfo,
898 &OpenInfoCount
899 );
900 if (!EFI_ERROR (Status)) {
901 for (OpenInfoIndex = 0; OpenInfoIndex < OpenInfoCount; OpenInfoIndex++) {
902 if (OpenInfo[OpenInfoIndex].AgentHandle == Image->Handle) {
903 Status = CoreCloseProtocol (
904 HandleBuffer[HandleIndex],
905 ProtocolGuidArray[ProtocolIndex],
906 Image->Handle,
907 OpenInfo[OpenInfoIndex].ControllerHandle
908 );
909 }
910 }
911 if (OpenInfo != NULL) {
912 CoreFreePool(OpenInfo);
913 }
914 }
915 }
916 if (ProtocolGuidArray != NULL) {
917 CoreFreePool(ProtocolGuidArray);
918 }
919 }
920 }
921 if (HandleBuffer != NULL) {
922 CoreFreePool (HandleBuffer);
923 }
924 }
925
926 CoreRemoveDebugImageInfoEntry (Image->Handle);
927
928 Status = CoreUninstallProtocolInterface (
929 Image->Handle,
930 &gEfiLoadedImageDevicePathProtocolGuid,
931 Image->LoadedImageDevicePath
932 );
933
934 Status = CoreUninstallProtocolInterface (
935 Image->Handle,
936 &gEfiLoadedImageProtocolGuid,
937 &Image->Info
938 );
939
940 if (Image->ImageContext.HiiResourceData != 0) {
941 Status = CoreUninstallProtocolInterface (
942 Image->Handle,
943 &gEfiHiiPackageListProtocolGuid,
944 (VOID *) (UINTN) Image->ImageContext.HiiResourceData
945 );
946 }
947
948 }
949
950 if (Image->RuntimeData != NULL) {
951 if (Image->RuntimeData->Link.ForwardLink != NULL) {
952 //
953 // Remove the Image from the Runtime Image list as we are about to Free it!
954 //
955 RemoveEntryList (&Image->RuntimeData->Link);
956 RemoveImageRecord (Image->RuntimeData);
957 }
958 CoreFreePool (Image->RuntimeData);
959 }
960
961 //
962 // Free the Image from memory
963 //
964 if ((Image->ImageBasePage != 0) && FreePage) {
965 CoreFreePages (Image->ImageBasePage, Image->NumberOfPages);
966 }
967
968 //
969 // Done with the Image structure
970 //
971 if (Image->Info.FilePath != NULL) {
972 CoreFreePool (Image->Info.FilePath);
973 }
974
975 if (Image->LoadedImageDevicePath != NULL) {
976 CoreFreePool (Image->LoadedImageDevicePath);
977 }
978
979 if (Image->FixupData != NULL) {
980 CoreFreePool (Image->FixupData);
981 }
982
983 CoreFreePool (Image);
984 }
985
986
987 /**
988 Loads an EFI image into memory and returns a handle to the image.
989
990 @param BootPolicy If TRUE, indicates that the request originates
991 from the boot manager, and that the boot
992 manager is attempting to load FilePath as a
993 boot selection.
994 @param ParentImageHandle The caller's image handle.
995 @param FilePath The specific file path from which the image is
996 loaded.
997 @param SourceBuffer If not NULL, a pointer to the memory location
998 containing a copy of the image to be loaded.
999 @param SourceSize The size in bytes of SourceBuffer.
1000 @param DstBuffer The buffer to store the image
1001 @param NumberOfPages If not NULL, it inputs a pointer to the page
1002 number of DstBuffer and outputs a pointer to
1003 the page number of the image. If this number is
1004 not enough, return EFI_BUFFER_TOO_SMALL and
1005 this parameter contains the required number.
1006 @param ImageHandle Pointer to the returned image handle that is
1007 created when the image is successfully loaded.
1008 @param EntryPoint A pointer to the entry point
1009 @param Attribute The bit mask of attributes to set for the load
1010 PE image
1011
1012 @retval EFI_SUCCESS The image was loaded into memory.
1013 @retval EFI_NOT_FOUND The FilePath was not found.
1014 @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
1015 @retval EFI_BUFFER_TOO_SMALL The buffer is too small
1016 @retval EFI_UNSUPPORTED The image type is not supported, or the device
1017 path cannot be parsed to locate the proper
1018 protocol for loading the file.
1019 @retval EFI_OUT_OF_RESOURCES Image was not loaded due to insufficient
1020 resources.
1021 @retval EFI_LOAD_ERROR Image was not loaded because the image format was corrupt or not
1022 understood.
1023 @retval EFI_DEVICE_ERROR Image was not loaded because the device returned a read error.
1024 @retval EFI_ACCESS_DENIED Image was not loaded because the platform policy prohibits the
1025 image from being loaded. NULL is returned in *ImageHandle.
1026 @retval EFI_SECURITY_VIOLATION Image was loaded and an ImageHandle was created with a
1027 valid EFI_LOADED_IMAGE_PROTOCOL. However, the current
1028 platform policy specifies that the image should not be started.
1029
1030 **/
1031 EFI_STATUS
1032 CoreLoadImageCommon (
1033 IN BOOLEAN BootPolicy,
1034 IN EFI_HANDLE ParentImageHandle,
1035 IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
1036 IN VOID *SourceBuffer OPTIONAL,
1037 IN UINTN SourceSize,
1038 IN EFI_PHYSICAL_ADDRESS DstBuffer OPTIONAL,
1039 IN OUT UINTN *NumberOfPages OPTIONAL,
1040 OUT EFI_HANDLE *ImageHandle,
1041 OUT EFI_PHYSICAL_ADDRESS *EntryPoint OPTIONAL,
1042 IN UINT32 Attribute
1043 )
1044 {
1045 LOADED_IMAGE_PRIVATE_DATA *Image;
1046 LOADED_IMAGE_PRIVATE_DATA *ParentImage;
1047 IMAGE_FILE_HANDLE FHand;
1048 EFI_STATUS Status;
1049 EFI_STATUS SecurityStatus;
1050 EFI_HANDLE DeviceHandle;
1051 UINT32 AuthenticationStatus;
1052 EFI_DEVICE_PATH_PROTOCOL *OriginalFilePath;
1053 EFI_DEVICE_PATH_PROTOCOL *HandleFilePath;
1054 UINTN FilePathSize;
1055 BOOLEAN ImageIsFromFv;
1056
1057 SecurityStatus = EFI_SUCCESS;
1058
1059 ASSERT (gEfiCurrentTpl < TPL_NOTIFY);
1060 ParentImage = NULL;
1061
1062 //
1063 // The caller must pass in a valid ParentImageHandle
1064 //
1065 if (ImageHandle == NULL || ParentImageHandle == NULL) {
1066 return EFI_INVALID_PARAMETER;
1067 }
1068
1069 ParentImage = CoreLoadedImageInfo (ParentImageHandle);
1070 if (ParentImage == NULL) {
1071 DEBUG((DEBUG_LOAD|DEBUG_ERROR, "LoadImageEx: Parent handle not an image handle\n"));
1072 return EFI_INVALID_PARAMETER;
1073 }
1074
1075 ZeroMem (&FHand, sizeof (IMAGE_FILE_HANDLE));
1076 FHand.Signature = IMAGE_FILE_HANDLE_SIGNATURE;
1077 OriginalFilePath = FilePath;
1078 HandleFilePath = FilePath;
1079 DeviceHandle = NULL;
1080 Status = EFI_SUCCESS;
1081 AuthenticationStatus = 0;
1082 ImageIsFromFv = FALSE;
1083
1084 //
1085 // If the caller passed a copy of the file, then just use it
1086 //
1087 if (SourceBuffer != NULL) {
1088 FHand.Source = SourceBuffer;
1089 FHand.SourceSize = SourceSize;
1090 Status = CoreLocateDevicePath (&gEfiDevicePathProtocolGuid, &HandleFilePath, &DeviceHandle);
1091 if (EFI_ERROR (Status)) {
1092 DeviceHandle = NULL;
1093 }
1094 if (SourceSize > 0) {
1095 Status = EFI_SUCCESS;
1096 } else {
1097 Status = EFI_LOAD_ERROR;
1098 }
1099 } else {
1100 if (FilePath == NULL) {
1101 return EFI_INVALID_PARAMETER;
1102 }
1103 //
1104 // Get the source file buffer by its device path.
1105 //
1106 FHand.Source = GetFileBufferByFilePath (
1107 BootPolicy,
1108 FilePath,
1109 &FHand.SourceSize,
1110 &AuthenticationStatus
1111 );
1112 if (FHand.Source == NULL) {
1113 Status = EFI_NOT_FOUND;
1114 } else {
1115 //
1116 // Try to get the image device handle by checking the match protocol.
1117 //
1118 FHand.FreeBuffer = TRUE;
1119 Status = CoreLocateDevicePath (&gEfiFirmwareVolume2ProtocolGuid, &HandleFilePath, &DeviceHandle);
1120 if (!EFI_ERROR (Status)) {
1121 ImageIsFromFv = TRUE;
1122 } else {
1123 HandleFilePath = FilePath;
1124 Status = CoreLocateDevicePath (&gEfiSimpleFileSystemProtocolGuid, &HandleFilePath, &DeviceHandle);
1125 if (EFI_ERROR (Status)) {
1126 if (!BootPolicy) {
1127 HandleFilePath = FilePath;
1128 Status = CoreLocateDevicePath (&gEfiLoadFile2ProtocolGuid, &HandleFilePath, &DeviceHandle);
1129 }
1130 if (EFI_ERROR (Status)) {
1131 HandleFilePath = FilePath;
1132 Status = CoreLocateDevicePath (&gEfiLoadFileProtocolGuid, &HandleFilePath, &DeviceHandle);
1133 }
1134 }
1135 }
1136 }
1137 }
1138
1139 if (EFI_ERROR (Status)) {
1140 Image = NULL;
1141 goto Done;
1142 }
1143
1144 if (gSecurity2 != NULL) {
1145 //
1146 // Verify File Authentication through the Security2 Architectural Protocol
1147 //
1148 SecurityStatus = gSecurity2->FileAuthentication (
1149 gSecurity2,
1150 OriginalFilePath,
1151 FHand.Source,
1152 FHand.SourceSize,
1153 BootPolicy
1154 );
1155 if (!EFI_ERROR (SecurityStatus) && ImageIsFromFv) {
1156 //
1157 // When Security2 is installed, Security Architectural Protocol must be published.
1158 //
1159 ASSERT (gSecurity != NULL);
1160
1161 //
1162 // Verify the Authentication Status through the Security Architectural Protocol
1163 // Only on images that have been read using Firmware Volume protocol.
1164 //
1165 SecurityStatus = gSecurity->FileAuthenticationState (
1166 gSecurity,
1167 AuthenticationStatus,
1168 OriginalFilePath
1169 );
1170 }
1171 } else if ((gSecurity != NULL) && (OriginalFilePath != NULL)) {
1172 //
1173 // Verify the Authentication Status through the Security Architectural Protocol
1174 //
1175 SecurityStatus = gSecurity->FileAuthenticationState (
1176 gSecurity,
1177 AuthenticationStatus,
1178 OriginalFilePath
1179 );
1180 }
1181
1182 //
1183 // Check Security Status.
1184 //
1185 if (EFI_ERROR (SecurityStatus) && SecurityStatus != EFI_SECURITY_VIOLATION) {
1186 if (SecurityStatus == EFI_ACCESS_DENIED) {
1187 //
1188 // Image was not loaded because the platform policy prohibits the image from being loaded.
1189 // It's the only place we could meet EFI_ACCESS_DENIED.
1190 //
1191 *ImageHandle = NULL;
1192 }
1193 Status = SecurityStatus;
1194 Image = NULL;
1195 goto Done;
1196 }
1197
1198 //
1199 // Allocate a new image structure
1200 //
1201 Image = AllocateZeroPool (sizeof(LOADED_IMAGE_PRIVATE_DATA));
1202 if (Image == NULL) {
1203 Status = EFI_OUT_OF_RESOURCES;
1204 goto Done;
1205 }
1206
1207 //
1208 // Pull out just the file portion of the DevicePath for the LoadedImage FilePath
1209 //
1210 FilePath = OriginalFilePath;
1211 if (DeviceHandle != NULL) {
1212 Status = CoreHandleProtocol (DeviceHandle, &gEfiDevicePathProtocolGuid, (VOID **)&HandleFilePath);
1213 if (!EFI_ERROR (Status)) {
1214 FilePathSize = GetDevicePathSize (HandleFilePath) - sizeof(EFI_DEVICE_PATH_PROTOCOL);
1215 FilePath = (EFI_DEVICE_PATH_PROTOCOL *) (((UINT8 *)FilePath) + FilePathSize );
1216 }
1217 }
1218 //
1219 // Initialize the fields for an internal driver
1220 //
1221 Image->Signature = LOADED_IMAGE_PRIVATE_DATA_SIGNATURE;
1222 Image->Info.SystemTable = gDxeCoreST;
1223 Image->Info.DeviceHandle = DeviceHandle;
1224 Image->Info.Revision = EFI_LOADED_IMAGE_PROTOCOL_REVISION;
1225 Image->Info.FilePath = DuplicateDevicePath (FilePath);
1226 Image->Info.ParentHandle = ParentImageHandle;
1227
1228
1229 if (NumberOfPages != NULL) {
1230 Image->NumberOfPages = *NumberOfPages ;
1231 } else {
1232 Image->NumberOfPages = 0 ;
1233 }
1234
1235 //
1236 // Install the protocol interfaces for this image
1237 // don't fire notifications yet
1238 //
1239 Status = CoreInstallProtocolInterfaceNotify (
1240 &Image->Handle,
1241 &gEfiLoadedImageProtocolGuid,
1242 EFI_NATIVE_INTERFACE,
1243 &Image->Info,
1244 FALSE
1245 );
1246 if (EFI_ERROR (Status)) {
1247 goto Done;
1248 }
1249
1250 //
1251 // Load the image. If EntryPoint is Null, it will not be set.
1252 //
1253 Status = CoreLoadPeImage (BootPolicy, &FHand, Image, DstBuffer, EntryPoint, Attribute);
1254 if (EFI_ERROR (Status)) {
1255 if ((Status == EFI_BUFFER_TOO_SMALL) || (Status == EFI_OUT_OF_RESOURCES)) {
1256 if (NumberOfPages != NULL) {
1257 *NumberOfPages = Image->NumberOfPages;
1258 }
1259 }
1260 goto Done;
1261 }
1262
1263 if (NumberOfPages != NULL) {
1264 *NumberOfPages = Image->NumberOfPages;
1265 }
1266
1267 //
1268 // Register the image in the Debug Image Info Table if the attribute is set
1269 //
1270 if ((Attribute & EFI_LOAD_PE_IMAGE_ATTRIBUTE_DEBUG_IMAGE_INFO_TABLE_REGISTRATION) != 0) {
1271 CoreNewDebugImageInfoEntry (EFI_DEBUG_IMAGE_INFO_TYPE_NORMAL, &Image->Info, Image->Handle);
1272 }
1273
1274 //
1275 //Reinstall loaded image protocol to fire any notifications
1276 //
1277 Status = CoreReinstallProtocolInterface (
1278 Image->Handle,
1279 &gEfiLoadedImageProtocolGuid,
1280 &Image->Info,
1281 &Image->Info
1282 );
1283 if (EFI_ERROR (Status)) {
1284 goto Done;
1285 }
1286
1287 //
1288 // If DevicePath parameter to the LoadImage() is not NULL, then make a copy of DevicePath,
1289 // otherwise Loaded Image Device Path Protocol is installed with a NULL interface pointer.
1290 //
1291 if (OriginalFilePath != NULL) {
1292 Image->LoadedImageDevicePath = DuplicateDevicePath (OriginalFilePath);
1293 }
1294
1295 //
1296 // Install Loaded Image Device Path Protocol onto the image handle of a PE/COFE image
1297 //
1298 Status = CoreInstallProtocolInterface (
1299 &Image->Handle,
1300 &gEfiLoadedImageDevicePathProtocolGuid,
1301 EFI_NATIVE_INTERFACE,
1302 Image->LoadedImageDevicePath
1303 );
1304 if (EFI_ERROR (Status)) {
1305 goto Done;
1306 }
1307
1308 //
1309 // Install HII Package List Protocol onto the image handle
1310 //
1311 if (Image->ImageContext.HiiResourceData != 0) {
1312 Status = CoreInstallProtocolInterface (
1313 &Image->Handle,
1314 &gEfiHiiPackageListProtocolGuid,
1315 EFI_NATIVE_INTERFACE,
1316 (VOID *) (UINTN) Image->ImageContext.HiiResourceData
1317 );
1318 if (EFI_ERROR (Status)) {
1319 goto Done;
1320 }
1321 }
1322
1323 //
1324 // Success. Return the image handle
1325 //
1326 *ImageHandle = Image->Handle;
1327
1328 Done:
1329 //
1330 // All done accessing the source file
1331 // If we allocated the Source buffer, free it
1332 //
1333 if (FHand.FreeBuffer) {
1334 CoreFreePool (FHand.Source);
1335 }
1336
1337 //
1338 // There was an error. If there's an Image structure, free it
1339 //
1340 if (EFI_ERROR (Status)) {
1341 if (Image != NULL) {
1342 CoreUnloadAndCloseImage (Image, (BOOLEAN)(DstBuffer == 0));
1343 Image = NULL;
1344 }
1345 } else if (EFI_ERROR (SecurityStatus)) {
1346 Status = SecurityStatus;
1347 }
1348
1349 //
1350 // Track the return status from LoadImage.
1351 //
1352 if (Image != NULL) {
1353 Image->LoadImageStatus = Status;
1354 }
1355
1356 return Status;
1357 }
1358
1359
1360
1361
1362 /**
1363 Loads an EFI image into memory and returns a handle to the image.
1364
1365 @param BootPolicy If TRUE, indicates that the request originates
1366 from the boot manager, and that the boot
1367 manager is attempting to load FilePath as a
1368 boot selection.
1369 @param ParentImageHandle The caller's image handle.
1370 @param FilePath The specific file path from which the image is
1371 loaded.
1372 @param SourceBuffer If not NULL, a pointer to the memory location
1373 containing a copy of the image to be loaded.
1374 @param SourceSize The size in bytes of SourceBuffer.
1375 @param ImageHandle Pointer to the returned image handle that is
1376 created when the image is successfully loaded.
1377
1378 @retval EFI_SUCCESS The image was loaded into memory.
1379 @retval EFI_NOT_FOUND The FilePath was not found.
1380 @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
1381 @retval EFI_UNSUPPORTED The image type is not supported, or the device
1382 path cannot be parsed to locate the proper
1383 protocol for loading the file.
1384 @retval EFI_OUT_OF_RESOURCES Image was not loaded due to insufficient
1385 resources.
1386 @retval EFI_LOAD_ERROR Image was not loaded because the image format was corrupt or not
1387 understood.
1388 @retval EFI_DEVICE_ERROR Image was not loaded because the device returned a read error.
1389 @retval EFI_ACCESS_DENIED Image was not loaded because the platform policy prohibits the
1390 image from being loaded. NULL is returned in *ImageHandle.
1391 @retval EFI_SECURITY_VIOLATION Image was loaded and an ImageHandle was created with a
1392 valid EFI_LOADED_IMAGE_PROTOCOL. However, the current
1393 platform policy specifies that the image should not be started.
1394
1395 **/
1396 EFI_STATUS
1397 EFIAPI
1398 CoreLoadImage (
1399 IN BOOLEAN BootPolicy,
1400 IN EFI_HANDLE ParentImageHandle,
1401 IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
1402 IN VOID *SourceBuffer OPTIONAL,
1403 IN UINTN SourceSize,
1404 OUT EFI_HANDLE *ImageHandle
1405 )
1406 {
1407 EFI_STATUS Status;
1408 UINT64 Tick;
1409 EFI_HANDLE Handle;
1410
1411 Tick = 0;
1412 PERF_CODE (
1413 Tick = GetPerformanceCounter ();
1414 );
1415
1416 Status = CoreLoadImageCommon (
1417 BootPolicy,
1418 ParentImageHandle,
1419 FilePath,
1420 SourceBuffer,
1421 SourceSize,
1422 (EFI_PHYSICAL_ADDRESS) (UINTN) NULL,
1423 NULL,
1424 ImageHandle,
1425 NULL,
1426 EFI_LOAD_PE_IMAGE_ATTRIBUTE_RUNTIME_REGISTRATION | EFI_LOAD_PE_IMAGE_ATTRIBUTE_DEBUG_IMAGE_INFO_TABLE_REGISTRATION
1427 );
1428
1429 Handle = NULL;
1430 if (!EFI_ERROR (Status)) {
1431 //
1432 // ImageHandle will be valid only Status is success.
1433 //
1434 Handle = *ImageHandle;
1435 }
1436
1437 PERF_START (Handle, "LoadImage:", NULL, Tick);
1438 PERF_END (Handle, "LoadImage:", NULL, 0);
1439
1440 return Status;
1441 }
1442
1443
1444
1445 /**
1446 Loads an EFI image into memory and returns a handle to the image with extended parameters.
1447
1448 @param This Calling context
1449 @param ParentImageHandle The caller's image handle.
1450 @param FilePath The specific file path from which the image is
1451 loaded.
1452 @param SourceBuffer If not NULL, a pointer to the memory location
1453 containing a copy of the image to be loaded.
1454 @param SourceSize The size in bytes of SourceBuffer.
1455 @param DstBuffer The buffer to store the image.
1456 @param NumberOfPages For input, specifies the space size of the
1457 image by caller if not NULL. For output,
1458 specifies the actual space size needed.
1459 @param ImageHandle Image handle for output.
1460 @param EntryPoint Image entry point for output.
1461 @param Attribute The bit mask of attributes to set for the load
1462 PE image.
1463
1464 @retval EFI_SUCCESS The image was loaded into memory.
1465 @retval EFI_NOT_FOUND The FilePath was not found.
1466 @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
1467 @retval EFI_UNSUPPORTED The image type is not supported, or the device
1468 path cannot be parsed to locate the proper
1469 protocol for loading the file.
1470 @retval EFI_OUT_OF_RESOURCES Image was not loaded due to insufficient
1471 resources.
1472 @retval EFI_LOAD_ERROR Image was not loaded because the image format was corrupt or not
1473 understood.
1474 @retval EFI_DEVICE_ERROR Image was not loaded because the device returned a read error.
1475 @retval EFI_ACCESS_DENIED Image was not loaded because the platform policy prohibits the
1476 image from being loaded. NULL is returned in *ImageHandle.
1477 @retval EFI_SECURITY_VIOLATION Image was loaded and an ImageHandle was created with a
1478 valid EFI_LOADED_IMAGE_PROTOCOL. However, the current
1479 platform policy specifies that the image should not be started.
1480
1481 **/
1482 EFI_STATUS
1483 EFIAPI
1484 CoreLoadImageEx (
1485 IN EFI_PE32_IMAGE_PROTOCOL *This,
1486 IN EFI_HANDLE ParentImageHandle,
1487 IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
1488 IN VOID *SourceBuffer OPTIONAL,
1489 IN UINTN SourceSize,
1490 IN EFI_PHYSICAL_ADDRESS DstBuffer OPTIONAL,
1491 OUT UINTN *NumberOfPages OPTIONAL,
1492 OUT EFI_HANDLE *ImageHandle,
1493 OUT EFI_PHYSICAL_ADDRESS *EntryPoint OPTIONAL,
1494 IN UINT32 Attribute
1495 )
1496 {
1497 EFI_STATUS Status;
1498 UINT64 Tick;
1499 EFI_HANDLE Handle;
1500
1501 Tick = 0;
1502 PERF_CODE (
1503 Tick = GetPerformanceCounter ();
1504 );
1505
1506 Status = CoreLoadImageCommon (
1507 TRUE,
1508 ParentImageHandle,
1509 FilePath,
1510 SourceBuffer,
1511 SourceSize,
1512 DstBuffer,
1513 NumberOfPages,
1514 ImageHandle,
1515 EntryPoint,
1516 Attribute
1517 );
1518
1519 Handle = NULL;
1520 if (!EFI_ERROR (Status)) {
1521 //
1522 // ImageHandle will be valid only Status is success.
1523 //
1524 Handle = *ImageHandle;
1525 }
1526
1527 PERF_START (Handle, "LoadImage:", NULL, Tick);
1528 PERF_END (Handle, "LoadImage:", NULL, 0);
1529
1530 return Status;
1531 }
1532
1533
1534 /**
1535 Transfer control to a loaded image's entry point.
1536
1537 @param ImageHandle Handle of image to be started.
1538 @param ExitDataSize Pointer of the size to ExitData
1539 @param ExitData Pointer to a pointer to a data buffer that
1540 includes a Null-terminated string,
1541 optionally followed by additional binary data.
1542 The string is a description that the caller may
1543 use to further indicate the reason for the
1544 image's exit.
1545
1546 @retval EFI_INVALID_PARAMETER Invalid parameter
1547 @retval EFI_OUT_OF_RESOURCES No enough buffer to allocate
1548 @retval EFI_SECURITY_VIOLATION The current platform policy specifies that the image should not be started.
1549 @retval EFI_SUCCESS Successfully transfer control to the image's
1550 entry point.
1551
1552 **/
1553 EFI_STATUS
1554 EFIAPI
1555 CoreStartImage (
1556 IN EFI_HANDLE ImageHandle,
1557 OUT UINTN *ExitDataSize,
1558 OUT CHAR16 **ExitData OPTIONAL
1559 )
1560 {
1561 EFI_STATUS Status;
1562 LOADED_IMAGE_PRIVATE_DATA *Image;
1563 LOADED_IMAGE_PRIVATE_DATA *LastImage;
1564 UINT64 HandleDatabaseKey;
1565 UINTN SetJumpFlag;
1566 UINT64 Tick;
1567 EFI_HANDLE Handle;
1568
1569 Tick = 0;
1570 Handle = ImageHandle;
1571
1572 Image = CoreLoadedImageInfo (ImageHandle);
1573 if (Image == NULL || Image->Started) {
1574 return EFI_INVALID_PARAMETER;
1575 }
1576 if (EFI_ERROR (Image->LoadImageStatus)) {
1577 return Image->LoadImageStatus;
1578 }
1579
1580 //
1581 // The image to be started must have the machine type supported by DxeCore.
1582 //
1583 if (!EFI_IMAGE_MACHINE_TYPE_SUPPORTED (Image->Machine)) {
1584 //
1585 // Do not ASSERT here, because image might be loaded via EFI_IMAGE_MACHINE_CROSS_TYPE_SUPPORTED
1586 // But it can not be started.
1587 //
1588 DEBUG ((EFI_D_ERROR, "Image type %s can't be started ", GetMachineTypeName(Image->Machine)));
1589 DEBUG ((EFI_D_ERROR, "on %s UEFI system.\n", GetMachineTypeName(mDxeCoreImageMachineType)));
1590 return EFI_UNSUPPORTED;
1591 }
1592
1593 PERF_CODE (
1594 Tick = GetPerformanceCounter ();
1595 );
1596
1597
1598 //
1599 // Push the current start image context, and
1600 // link the current image to the head. This is the
1601 // only image that can call Exit()
1602 //
1603 HandleDatabaseKey = CoreGetHandleDatabaseKey ();
1604 LastImage = mCurrentImage;
1605 mCurrentImage = Image;
1606 Image->Tpl = gEfiCurrentTpl;
1607
1608 //
1609 // Set long jump for Exit() support
1610 // JumpContext must be aligned on a CPU specific boundary.
1611 // Overallocate the buffer and force the required alignment
1612 //
1613 Image->JumpBuffer = AllocatePool (sizeof (BASE_LIBRARY_JUMP_BUFFER) + BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT);
1614 if (Image->JumpBuffer == NULL) {
1615 //
1616 // Image may be unloaded after return with failure,
1617 // then ImageHandle may be invalid, so use NULL handle to record perf log.
1618 //
1619 PERF_START (NULL, "StartImage:", NULL, Tick);
1620 PERF_END (NULL, "StartImage:", NULL, 0);
1621 return EFI_OUT_OF_RESOURCES;
1622 }
1623 Image->JumpContext = ALIGN_POINTER (Image->JumpBuffer, BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT);
1624
1625 SetJumpFlag = SetJump (Image->JumpContext);
1626 //
1627 // The initial call to SetJump() must always return 0.
1628 // Subsequent calls to LongJump() cause a non-zero value to be returned by SetJump().
1629 //
1630 if (SetJumpFlag == 0) {
1631 RegisterMemoryProfileImage (Image, (Image->ImageContext.ImageType == EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION ? EFI_FV_FILETYPE_APPLICATION : EFI_FV_FILETYPE_DRIVER));
1632 //
1633 // Call the image's entry point
1634 //
1635 Image->Started = TRUE;
1636 Image->Status = Image->EntryPoint (ImageHandle, Image->Info.SystemTable);
1637
1638 //
1639 // Add some debug information if the image returned with error.
1640 // This make the user aware and check if the driver image have already released
1641 // all the resource in this situation.
1642 //
1643 DEBUG_CODE_BEGIN ();
1644 if (EFI_ERROR (Image->Status)) {
1645 DEBUG ((DEBUG_ERROR, "Error: Image at %11p start failed: %r\n", Image->Info.ImageBase, Image->Status));
1646 }
1647 DEBUG_CODE_END ();
1648
1649 //
1650 // If the image returns, exit it through Exit()
1651 //
1652 CoreExit (ImageHandle, Image->Status, 0, NULL);
1653 }
1654
1655 //
1656 // Image has completed. Verify the tpl is the same
1657 //
1658 ASSERT (Image->Tpl == gEfiCurrentTpl);
1659 CoreRestoreTpl (Image->Tpl);
1660
1661 CoreFreePool (Image->JumpBuffer);
1662
1663 //
1664 // Pop the current start image context
1665 //
1666 mCurrentImage = LastImage;
1667
1668 //
1669 // Go connect any handles that were created or modified while the image executed.
1670 //
1671 CoreConnectHandlesByKey (HandleDatabaseKey);
1672
1673 //
1674 // Handle the image's returned ExitData
1675 //
1676 DEBUG_CODE_BEGIN ();
1677 if (Image->ExitDataSize != 0 || Image->ExitData != NULL) {
1678
1679 DEBUG ((DEBUG_LOAD, "StartImage: ExitDataSize %d, ExitData %p", (UINT32)Image->ExitDataSize, Image->ExitData));
1680 if (Image->ExitData != NULL) {
1681 DEBUG ((DEBUG_LOAD, " (%hs)", Image->ExitData));
1682 }
1683 DEBUG ((DEBUG_LOAD, "\n"));
1684 }
1685 DEBUG_CODE_END ();
1686
1687 //
1688 // Return the exit data to the caller
1689 //
1690 if (ExitData != NULL && ExitDataSize != NULL) {
1691 *ExitDataSize = Image->ExitDataSize;
1692 *ExitData = Image->ExitData;
1693 } else {
1694 //
1695 // Caller doesn't want the exit data, free it
1696 //
1697 CoreFreePool (Image->ExitData);
1698 Image->ExitData = NULL;
1699 }
1700
1701 //
1702 // Save the Status because Image will get destroyed if it is unloaded.
1703 //
1704 Status = Image->Status;
1705
1706 //
1707 // If the image returned an error, or if the image is an application
1708 // unload it
1709 //
1710 if (EFI_ERROR (Image->Status) || Image->Type == EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION) {
1711 CoreUnloadAndCloseImage (Image, TRUE);
1712 //
1713 // ImageHandle may be invalid after the image is unloaded, so use NULL handle to record perf log.
1714 //
1715 Handle = NULL;
1716 }
1717
1718 //
1719 // Done
1720 //
1721 PERF_START (Handle, "StartImage:", NULL, Tick);
1722 PERF_END (Handle, "StartImage:", NULL, 0);
1723 return Status;
1724 }
1725
1726 /**
1727 Terminates the currently loaded EFI image and returns control to boot services.
1728
1729 @param ImageHandle Handle that identifies the image. This
1730 parameter is passed to the image on entry.
1731 @param Status The image's exit code.
1732 @param ExitDataSize The size, in bytes, of ExitData. Ignored if
1733 ExitStatus is EFI_SUCCESS.
1734 @param ExitData Pointer to a data buffer that includes a
1735 Null-terminated Unicode string, optionally
1736 followed by additional binary data. The string
1737 is a description that the caller may use to
1738 further indicate the reason for the image's
1739 exit.
1740
1741 @retval EFI_INVALID_PARAMETER Image handle is NULL or it is not current
1742 image.
1743 @retval EFI_SUCCESS Successfully terminates the currently loaded
1744 EFI image.
1745 @retval EFI_ACCESS_DENIED Should never reach there.
1746 @retval EFI_OUT_OF_RESOURCES Could not allocate pool
1747
1748 **/
1749 EFI_STATUS
1750 EFIAPI
1751 CoreExit (
1752 IN EFI_HANDLE ImageHandle,
1753 IN EFI_STATUS Status,
1754 IN UINTN ExitDataSize,
1755 IN CHAR16 *ExitData OPTIONAL
1756 )
1757 {
1758 LOADED_IMAGE_PRIVATE_DATA *Image;
1759 EFI_TPL OldTpl;
1760
1761 //
1762 // Prevent possible reentrance to this function
1763 // for the same ImageHandle
1764 //
1765 OldTpl = CoreRaiseTpl (TPL_NOTIFY);
1766
1767 Image = CoreLoadedImageInfo (ImageHandle);
1768 if (Image == NULL) {
1769 Status = EFI_INVALID_PARAMETER;
1770 goto Done;
1771 }
1772
1773 if (!Image->Started) {
1774 //
1775 // The image has not been started so just free its resources
1776 //
1777 CoreUnloadAndCloseImage (Image, TRUE);
1778 Status = EFI_SUCCESS;
1779 goto Done;
1780 }
1781
1782 //
1783 // Image has been started, verify this image can exit
1784 //
1785 if (Image != mCurrentImage) {
1786 DEBUG ((DEBUG_LOAD|DEBUG_ERROR, "Exit: Image is not exitable image\n"));
1787 Status = EFI_INVALID_PARAMETER;
1788 goto Done;
1789 }
1790
1791 //
1792 // Set status
1793 //
1794 Image->Status = Status;
1795
1796 //
1797 // If there's ExitData info, move it
1798 //
1799 if (ExitData != NULL) {
1800 Image->ExitDataSize = ExitDataSize;
1801 Image->ExitData = AllocatePool (Image->ExitDataSize);
1802 if (Image->ExitData == NULL) {
1803 Status = EFI_OUT_OF_RESOURCES;
1804 goto Done;
1805 }
1806 CopyMem (Image->ExitData, ExitData, Image->ExitDataSize);
1807 }
1808
1809 CoreRestoreTpl (OldTpl);
1810 //
1811 // return to StartImage
1812 //
1813 LongJump (Image->JumpContext, (UINTN)-1);
1814
1815 //
1816 // If we return from LongJump, then it is an error
1817 //
1818 ASSERT (FALSE);
1819 Status = EFI_ACCESS_DENIED;
1820 Done:
1821 CoreRestoreTpl (OldTpl);
1822 return Status;
1823 }
1824
1825
1826
1827
1828 /**
1829 Unloads an image.
1830
1831 @param ImageHandle Handle that identifies the image to be
1832 unloaded.
1833
1834 @retval EFI_SUCCESS The image has been unloaded.
1835 @retval EFI_UNSUPPORTED The image has been sarted, and does not support
1836 unload.
1837 @retval EFI_INVALID_PARAMPETER ImageHandle is not a valid image handle.
1838
1839 **/
1840 EFI_STATUS
1841 EFIAPI
1842 CoreUnloadImage (
1843 IN EFI_HANDLE ImageHandle
1844 )
1845 {
1846 EFI_STATUS Status;
1847 LOADED_IMAGE_PRIVATE_DATA *Image;
1848
1849 Image = CoreLoadedImageInfo (ImageHandle);
1850 if (Image == NULL ) {
1851 //
1852 // The image handle is not valid
1853 //
1854 Status = EFI_INVALID_PARAMETER;
1855 goto Done;
1856 }
1857 UnregisterMemoryProfileImage (Image);
1858
1859 if (Image->Started) {
1860 //
1861 // The image has been started, request it to unload.
1862 //
1863 Status = EFI_UNSUPPORTED;
1864 if (Image->Info.Unload != NULL) {
1865 Status = Image->Info.Unload (ImageHandle);
1866 }
1867
1868 } else {
1869 //
1870 // This Image hasn't been started, thus it can be unloaded
1871 //
1872 Status = EFI_SUCCESS;
1873 }
1874
1875
1876 if (!EFI_ERROR (Status)) {
1877 //
1878 // if the Image was not started or Unloaded O.K. then clean up
1879 //
1880 CoreUnloadAndCloseImage (Image, TRUE);
1881 }
1882
1883 Done:
1884 return Status;
1885 }
1886
1887
1888
1889 /**
1890 Unload the specified image.
1891
1892 @param This Indicates the calling context.
1893 @param ImageHandle The specified image handle.
1894
1895 @retval EFI_INVALID_PARAMETER Image handle is NULL.
1896 @retval EFI_UNSUPPORTED Attempt to unload an unsupported image.
1897 @retval EFI_SUCCESS Image successfully unloaded.
1898
1899 **/
1900 EFI_STATUS
1901 EFIAPI
1902 CoreUnloadImageEx (
1903 IN EFI_PE32_IMAGE_PROTOCOL *This,
1904 IN EFI_HANDLE ImageHandle
1905 )
1906 {
1907 return CoreUnloadImage (ImageHandle);
1908 }
EFI Development Kit II mirror for PVE