EdkModulePkg/Core/Dxe/Image/Image.c

   1 /*++
   2
   3 Copyright (c) 2006 - 2007, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   Image.c
  15
  16 Abstract:
  17
  18   Core image handling services
  19
  20 --*/
  21
  22 #include <DxeMain.h>
  23 //
  24 // Module Globals
  25 //
  26
  27 EFI_LOCK mBsExitLock        = EFI_INITIALIZE_LOCK_VARIABLE(EFI_TPL_NOTIFY);
  28 EFI_LOCK mBsUnloadImageLock = EFI_INITIALIZE_LOCK_VARIABLE(EFI_TPL_NOTIFY);
  29
  30 LOADED_IMAGE_PRIVATE_DATA  *mCurrentImage = NULL;
  31
  32 LOAD_PE32_IMAGE_PRIVATE_DATA  mLoadPe32PrivateData = {
  33   LOAD_PE32_IMAGE_PRIVATE_DATA_SIGNATURE,
  34   NULL,
  35   {
  36     CoreLoadImageEx,
  37     CoreUnloadImageEx
  38   }
  39 };
  40
  41
  42 //
  43 // This code is needed to build the Image handle for the DXE Core
  44 //
  45 LOADED_IMAGE_PRIVATE_DATA mCorePrivateImage  = {
  46   LOADED_IMAGE_PRIVATE_DATA_SIGNATURE,            // Signature
  47   NULL,                                           // Image handle
  48   EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER,    // Image type
  49   TRUE,                                           // If entrypoint has been called
  50   NULL, // EntryPoint
  51   {
  52     EFI_LOADED_IMAGE_INFORMATION_REVISION,        // Revision
  53     NULL,                                         // Parent handle
  54     NULL,                                         // System handle
  55
  56     NULL,                                         // Device handle
  57     NULL,                                         // File path
  58     NULL,                                         // Reserved
  59
  60     0,                                            // LoadOptionsSize
  61     NULL,                                         // LoadOptions
  62
  63     NULL,                                         // ImageBase
  64     0,                                            // ImageSize
  65     EfiBootServicesCode,                          // ImageCodeType
  66     EfiBootServicesData                           // ImageDataType
  67   },
  68   (EFI_PHYSICAL_ADDRESS)0,    // ImageBasePage
  69   0,                          // NumberOfPages
  70   NULL,                       // FixupData
  71   0,                          // Tpl
  72   EFI_SUCCESS,                // Status
  73   0,                          // ExitDataSize
  74   NULL,                       // ExitData
  75   NULL,                       // JumpBuffer
  76   NULL,                       // JumpContext
  77   0,                          // Machine
  78   NULL,                       // Ebc
  79   NULL,                       // RuntimeData
  80 };
  81
  82
  83 EFI_STATUS
  84 CoreInitializeImageServices (
  85   IN  VOID *HobStart
  86   )
  87 /*++
  88
  89 Routine Description:
  90
  91   Add the Image Services to EFI Boot Services Table and install the protocol
  92   interfaces for this image.
  93
  94 Arguments:
  95
  96   HobStart        - The HOB to initialize
  97
  98 Returns:
  99
 100   Status code.
 101
 102 --*/
 103 {
 104   EFI_STATUS                        Status;
 105   LOADED_IMAGE_PRIVATE_DATA         *Image;
 106   EFI_PHYSICAL_ADDRESS              DxeCoreImageBaseAddress;
 107   UINT64                            DxeCoreImageLength;
 108   VOID                              *DxeCoreEntryPoint;
 109   EFI_PEI_HOB_POINTERS              DxeCoreHob;
 110   //
 111   // Searching for image hob
 112   //
 113   DxeCoreHob.Raw          = HobStart;
 114   while ((DxeCoreHob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, DxeCoreHob.Raw)) != NULL) {
 115     if (CompareGuid (&DxeCoreHob.MemoryAllocationModule->MemoryAllocationHeader.Name, &gEfiHobMemoryAllocModuleGuid)) {
 116       //
 117       // Find Dxe Core HOB
 118       //
 119       break;
 120     }
 121     DxeCoreHob.Raw = GET_NEXT_HOB (DxeCoreHob);
 122   }
 123   ASSERT (DxeCoreHob.Raw != NULL);
 124
 125   DxeCoreImageBaseAddress = DxeCoreHob.MemoryAllocationModule->MemoryAllocationHeader.MemoryBaseAddress;
 126   DxeCoreImageLength      = DxeCoreHob.MemoryAllocationModule->MemoryAllocationHeader.MemoryLength;
 127   DxeCoreEntryPoint       = (VOID *) (UINTN) DxeCoreHob.MemoryAllocationModule->EntryPoint;
 128   gDxeCoreFileName        = &DxeCoreHob.MemoryAllocationModule->ModuleName;
 129   //
 130   // Initialize the fields for an internal driver
 131   //
 132   Image = &mCorePrivateImage;
 133
 134   Image->EntryPoint         = (EFI_IMAGE_ENTRY_POINT)(UINTN)DxeCoreEntryPoint;
 135   Image->ImageBasePage      = DxeCoreImageBaseAddress;
 136   Image->NumberOfPages      = (UINTN)(EFI_SIZE_TO_PAGES((UINTN)(DxeCoreImageLength)));
 137   Image->Tpl                = gEfiCurrentTpl;
 138   Image->Info.SystemTable   = gST;
 139   Image->Info.ImageBase     = (VOID *)(UINTN)DxeCoreImageBaseAddress;
 140   Image->Info.ImageSize     = DxeCoreImageLength;
 141
 142   //
 143   // Install the protocol interfaces for this image
 144   //
 145   Status = CoreInstallProtocolInterface (
 146              &Image->Handle,
 147              &gEfiLoadedImageProtocolGuid,
 148              EFI_NATIVE_INTERFACE,
 149              &Image->Info
 150              );
 151   ASSERT_EFI_ERROR (Status);
 152
 153   mCurrentImage = Image;
 154
 155   //
 156   // Fill in DXE globals
 157   //
 158   gDxeCoreImageHandle = Image->Handle;
 159   gDxeCoreLoadedImage = &Image->Info;
 160
 161   //
 162   // Export DXE Core PE Loader functionality
 163   //
 164   return CoreInstallProtocolInterface (
 165            &mLoadPe32PrivateData.Handle,
 166            &gEfiLoadPeImageProtocolGuid,
 167            EFI_NATIVE_INTERFACE,
 168            &mLoadPe32PrivateData.Pe32Image
 169            );
 170 }
 171
 172 EFI_STATUS
 173 CoreLoadPeImage (
 174   IN VOID                        *Pe32Handle,
 175   IN LOADED_IMAGE_PRIVATE_DATA   *Image,
 176   IN EFI_PHYSICAL_ADDRESS        DstBuffer    OPTIONAL,
 177   OUT EFI_PHYSICAL_ADDRESS       *EntryPoint  OPTIONAL,
 178   IN  UINT32                     Attribute
 179   )
 180 /*++
 181
 182 Routine Description:
 183
 184   Loads, relocates, and invokes a PE/COFF image
 185
 186 Arguments:
 187
 188   Pe32Handle       - The handle of PE32 image
 189   Image            - PE image to be loaded
 190   DstBuffer        - The buffer to store the image
 191   EntryPoint       - A pointer to the entry point
 192   Attribute        - The bit mask of attributes to set for the load PE image
 193
 194 Returns:
 195
 196   EFI_SUCCESS          - The file was loaded, relocated, and invoked
 197
 198   EFI_OUT_OF_RESOURCES - There was not enough memory to load and relocate the PE/COFF file
 199
 200   EFI_INVALID_PARAMETER - Invalid parameter
 201
 202   EFI_BUFFER_TOO_SMALL  - Buffer for image is too small
 203
 204 --*/
 205 {
 206   EFI_STATUS      Status;
 207   BOOLEAN         DstBufAlocated;
 208   UINTN           Size;
 209
 210   ZeroMem (&Image->ImageContext, sizeof (Image->ImageContext));
 211
 212   Image->ImageContext.Handle    = Pe32Handle;
 213   Image->ImageContext.ImageRead = (PE_COFF_LOADER_READ_FILE)CoreReadImageFile;
 214
 215   //
 216   // Get information about the image being loaded
 217   //
 218   Status = gEfiPeiPeCoffLoader->GetImageInfo (gEfiPeiPeCoffLoader, &Image->ImageContext);
 219   if (EFI_ERROR (Status)) {
 220     return Status;
 221   }
 222
 223   if (!EFI_IMAGE_MACHINE_TYPE_SUPPORTED (Image->ImageContext.Machine)) {
 224     //
 225     // The PE/COFF loader can support loading image types that can be executed.
 226     // If we loaded an image type that we can not execute return EFI_UNSUPORTED.
 227     //
 228     return EFI_UNSUPPORTED;
 229   }
 230
 231
 232   //
 233   // Allocate memory of the correct memory type aligned on the required image boundry
 234   //
 235   DstBufAlocated = FALSE;
 236   if (DstBuffer == 0) {
 237     //
 238     // Allocate Destination Buffer as caller did not pass it in
 239     //
 240
 241     if (Image->ImageContext.SectionAlignment > EFI_PAGE_SIZE) {
 242       Size = (UINTN)Image->ImageContext.ImageSize + Image->ImageContext.SectionAlignment;
 243     } else {
 244       Size = (UINTN)Image->ImageContext.ImageSize;
 245     }
 246
 247     Image->NumberOfPages = EFI_SIZE_TO_PAGES (Size);
 248
 249     //
 250     // If the image relocations have not been stripped, then load at any address.
 251     // Otherwise load at the address at which it was linked.
 252     //
 253     // Memory below 1MB should be treated reserved for CSM and there should be
 254     // no modules whose preferred load addresses are below 1MB.
 255     //
 256     Status = EFI_OUT_OF_RESOURCES;
 257     if (Image->ImageContext.ImageAddress >= 0x100000 || Image->ImageContext.RelocationsStripped) {
 258       Status = CoreAllocatePages (
 259                  AllocateAddress,
 260                  (EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
 261                  Image->NumberOfPages,
 262                  &Image->ImageContext.ImageAddress
 263                  );
 264     }
 265     if (EFI_ERROR (Status) && !Image->ImageContext.RelocationsStripped) {
 266       Status = CoreAllocatePages (
 267                  AllocateAnyPages,
 268                  (EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType),
 269                  Image->NumberOfPages,
 270                  &Image->ImageContext.ImageAddress
 271                  );
 272     }
 273     if (EFI_ERROR (Status)) {
 274       return Status;
 275     }
 276     DstBufAlocated = TRUE;
 277   } else {
 278     //
 279     // Caller provided the destination buffer
 280     //
 281
 282     if (Image->ImageContext.RelocationsStripped && (Image->ImageContext.ImageAddress != DstBuffer)) {
 283       //
 284       // If the image relocations were stripped, and the caller provided a
 285       // destination buffer address that does not match the address that the
 286       // image is linked at, then the image cannot be loaded.
 287       //
 288       return EFI_INVALID_PARAMETER;
 289     }
 290
 291     if (Image->NumberOfPages != 0 &&
 292         Image->NumberOfPages <
 293         (EFI_SIZE_TO_PAGES ((UINTN)Image->ImageContext.ImageSize + Image->ImageContext.SectionAlignment))) {
 294       Image->NumberOfPages = EFI_SIZE_TO_PAGES ((UINTN)Image->ImageContext.ImageSize + Image->ImageContext.SectionAlignment);
 295       return EFI_BUFFER_TOO_SMALL;
 296     }
 297
 298     Image->NumberOfPages = EFI_SIZE_TO_PAGES ((UINTN)Image->ImageContext.ImageSize + Image->ImageContext.SectionAlignment);
 299     Image->ImageContext.ImageAddress = DstBuffer;
 300   }
 301
 302   Image->ImageBasePage = Image->ImageContext.ImageAddress;
 303   Image->ImageContext.ImageAddress =
 304       (Image->ImageContext.ImageAddress + Image->ImageContext.SectionAlignment - 1) &
 305       ~((UINTN)Image->ImageContext.SectionAlignment - 1);
 306
 307   //
 308   // Load the image from the file into the allocated memory
 309   //
 310   Status = gEfiPeiPeCoffLoader->LoadImage (gEfiPeiPeCoffLoader, &Image->ImageContext);
 311   if (EFI_ERROR (Status)) {
 312     goto Done;
 313   }
 314
 315   //
 316   // If this is a Runtime Driver, then allocate memory for the FixupData that
 317   // is used to relocate the image when SetVirtualAddressMap() is called. The
 318   // relocation is done by the Runtime AP.
 319   //
 320   if (Attribute & EFI_LOAD_PE_IMAGE_ATTRIBUTE_RUNTIME_REGISTRATION) {
 321     if (Image->ImageContext.ImageType == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER) {
 322       Image->ImageContext.FixupData = CoreAllocateRuntimePool ((UINTN)(Image->ImageContext.FixupDataSize));
 323       if (Image->ImageContext.FixupData == NULL) {
 324         Status = EFI_OUT_OF_RESOURCES;
 325         goto Done;
 326       }
 327     }
 328   }
 329
 330   //
 331   // Relocate the image in memory
 332   //
 333   Status = gEfiPeiPeCoffLoader->RelocateImage (gEfiPeiPeCoffLoader, &Image->ImageContext);
 334   if (EFI_ERROR (Status)) {
 335     goto Done;
 336   }
 337
 338   //
 339   // Flush the Instruction Cache
 340   //
 341   InvalidateInstructionCacheRange ((VOID *)(UINTN)Image->ImageContext.ImageAddress, (UINTN)Image->ImageContext.ImageSize);
 342
 343   //
 344   // Copy the machine type from the context to the image private data. This
 345   // is needed during image unload to know if we should call an EBC protocol
 346   // to unload the image.
 347   //
 348   Image->Machine = Image->ImageContext.Machine;
 349
 350   //
 351   // Get the image entry point. If it's an EBC image, then call into the
 352   // interpreter to create a thunk for the entry point and use the returned
 353   // value for the entry point.
 354   //
 355   Image->EntryPoint   = (EFI_IMAGE_ENTRY_POINT)(UINTN)Image->ImageContext.EntryPoint;
 356   if (Image->ImageContext.Machine == EFI_IMAGE_MACHINE_EBC) {
 357     //
 358     // Locate the EBC interpreter protocol
 359     //
 360     Status = CoreLocateProtocol (&gEfiEbcProtocolGuid, NULL, (VOID **)&Image->Ebc);
 361     if (EFI_ERROR(Status)) {
 362       goto Done;
 363     }
 364
 365     //
 366     // Register a callback for flushing the instruction cache so that created
 367     // thunks can be flushed.
 368     //
 369     Status = Image->Ebc->RegisterICacheFlush (Image->Ebc, (EBC_ICACHE_FLUSH)InvalidateInstructionCacheRange);
 370     if (EFI_ERROR(Status)) {
 371       goto Done;
 372     }
 373
 374     //
 375     // Create a thunk for the image's entry point. This will be the new
 376     // entry point for the image.
 377     //
 378     Status = Image->Ebc->CreateThunk (
 379                            Image->Ebc,
 380                            Image->Handle,
 381                            (VOID *)(UINTN)Image->ImageContext.EntryPoint,
 382                            (VOID **)&Image->EntryPoint
 383                            );
 384     if (EFI_ERROR(Status)) {
 385       goto Done;
 386     }
 387   }
 388
 389   //
 390   // Fill in the image information for the Loaded Image Protocol
 391   //
 392   Image->Type               = Image->ImageContext.ImageType;
 393   Image->Info.ImageBase     = (VOID *)(UINTN)Image->ImageContext.ImageAddress;
 394   Image->Info.ImageSize     = Image->ImageContext.ImageSize;
 395   Image->Info.ImageCodeType = (EFI_MEMORY_TYPE) (Image->ImageContext.ImageCodeMemoryType);
 396   Image->Info.ImageDataType = (EFI_MEMORY_TYPE) (Image->ImageContext.ImageDataMemoryType);
 397   if (Attribute & EFI_LOAD_PE_IMAGE_ATTRIBUTE_RUNTIME_REGISTRATION) {
 398     if (Image->ImageContext.ImageType == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER) {
 399       //
 400       // Make a list off all the RT images so we can let the RT AP know about them.
 401       //
 402       Image->RuntimeData = CoreAllocateRuntimePool (sizeof(EFI_RUNTIME_IMAGE_ENTRY));
 403       if (Image->RuntimeData == NULL) {
 404         goto Done;
 405       }
 406       Image->RuntimeData->ImageBase      = Image->Info.ImageBase;
 407       Image->RuntimeData->ImageSize      = (UINT64) (Image->Info.ImageSize);
 408       Image->RuntimeData->RelocationData = Image->ImageContext.FixupData;
 409       Image->RuntimeData->Handle         = Image->Handle;
 410       InsertTailList (&gRuntime->ImageHead, &Image->RuntimeData->Link);
 411     }
 412   }
 413
 414   //
 415   // Fill in the entry point of the image if it is available
 416   //
 417   if (EntryPoint != NULL) {
 418     *EntryPoint = Image->ImageContext.EntryPoint;
 419   }
 420
 421   //
 422   // Print the load address and the PDB file name if it is available
 423   //
 424
 425   DEBUG_CODE_BEGIN ();
 426
 427     UINTN Index;
 428     UINTN StartIndex;
 429     CHAR8 EfiFileName[256];
 430
 431     DEBUG ((EFI_D_INFO | EFI_D_LOAD, "Loading driver at 0x%10p EntryPoint=0x%10p ", (VOID *)(UINTN)Image->ImageContext.ImageAddress, (VOID *)(UINTN)Image->ImageContext.EntryPoint));
 432     if (Image->ImageContext.PdbPointer != NULL) {
 433       StartIndex = 0;
 434       for (Index = 0; Image->ImageContext.PdbPointer[Index] != 0; Index++) {
 435         if (Image->ImageContext.PdbPointer[Index] == '\\') {
 436           StartIndex = Index + 1;
 437         }
 438       }
 439       //
 440       // Copy the PDB file name to our temporary string, and replace .pdb with .efi
 441       //
 442       for (Index = 0; Index < sizeof (EfiFileName); Index++) {
 443         EfiFileName[Index] = Image->ImageContext.PdbPointer[Index + StartIndex];
 444         if (EfiFileName[Index] == 0) {
 445           EfiFileName[Index] = '.';
 446         }
 447         if (EfiFileName[Index] == '.') {
 448           EfiFileName[Index + 1] = 'e';
 449           EfiFileName[Index + 2] = 'f';
 450           EfiFileName[Index + 3] = 'i';
 451           EfiFileName[Index + 4] = 0;
 452           break;
 453         }
 454       }
 455       DEBUG ((EFI_D_INFO | EFI_D_LOAD, "%a", EfiFileName)); // &Image->ImageContext.PdbPointer[StartIndex]));
 456     }
 457     DEBUG ((EFI_D_INFO | EFI_D_LOAD, "\n"));
 458
 459   DEBUG_CODE_END ();
 460
 461   return EFI_SUCCESS;
 462
 463 Done:
 464
 465   //
 466   // Free memory.
 467   //
 468
 469   if (DstBufAlocated) {
 470     CoreFreePages (Image->ImageContext.ImageAddress, Image->NumberOfPages);
 471   }
 472
 473   if (Image->ImageContext.FixupData != NULL) {
 474     CoreFreePool (Image->ImageContext.FixupData);
 475   }
 476
 477   return Status;
 478 }
 479
 480
 481 LOADED_IMAGE_PRIVATE_DATA *
 482 CoreLoadedImageInfo (
 483   IN EFI_HANDLE  ImageHandle
 484   )
 485 /*++
 486
 487 Routine Description:
 488
 489   Get the image's private data from its handle.
 490
 491 Arguments:
 492
 493   ImageHandle     - The image handle
 494
 495 Returns:
 496
 497   Return the image private data associated with ImageHandle.
 498
 499 --*/
 500 {
 501   EFI_STATUS                 Status;
 502   EFI_LOADED_IMAGE_PROTOCOL  *LoadedImage;
 503   LOADED_IMAGE_PRIVATE_DATA  *Image;
 504
 505   Status = CoreHandleProtocol (
 506              ImageHandle,
 507              &gEfiLoadedImageProtocolGuid,
 508              (VOID **)&LoadedImage
 509              );
 510   if (!EFI_ERROR (Status)) {
 511     Image = LOADED_IMAGE_PRIVATE_DATA_FROM_THIS (LoadedImage);
 512   } else {
 513     DEBUG ((EFI_D_LOAD, "CoreLoadedImageInfo: Not an ImageHandle %x\n", ImageHandle));
 514     Image = NULL;
 515   }
 516
 517   return Image;
 518 }
 519
 520 STATIC
 521 EFI_STATUS
 522 CoreLoadImageCommon (
 523   IN  BOOLEAN                          BootPolicy,
 524   IN  EFI_HANDLE                       ParentImageHandle,
 525   IN  EFI_DEVICE_PATH_PROTOCOL         *FilePath,
 526   IN  VOID                             *SourceBuffer       OPTIONAL,
 527   IN  UINTN                            SourceSize,
 528   IN  EFI_PHYSICAL_ADDRESS             DstBuffer           OPTIONAL,
 529   IN OUT UINTN                         *NumberOfPages      OPTIONAL,
 530   OUT EFI_HANDLE                       *ImageHandle,
 531   OUT EFI_PHYSICAL_ADDRESS             *EntryPoint         OPTIONAL,
 532   IN  UINT32                           Attribute
 533   )
 534 /*++
 535
 536 Routine Description:
 537
 538   Loads an EFI image into memory and returns a handle to the image.
 539
 540 Arguments:
 541
 542   BootPolicy          - If TRUE, indicates that the request originates from the boot manager,
 543                         and that the boot manager is attempting to load FilePath as a boot selection.
 544   ParentImageHandle   - The caller's image handle.
 545   FilePath            - The specific file path from which the image is loaded.
 546   SourceBuffer        - If not NULL, a pointer to the memory location containing a copy of
 547                         the image to be loaded.
 548   SourceSize          - The size in bytes of SourceBuffer.
 549   DstBuffer           - The buffer to store the image
 550   NumberOfPages       - If not NULL, a pointer to the image's page number, if this number
 551                         is not enough, return EFI_BUFFER_TOO_SMALL and this parameter contain
 552                         the required number.
 553   ImageHandle         - Pointer to the returned image handle that is created when the image
 554                         is successfully loaded.
 555   EntryPoint          - A pointer to the entry point
 556   Attribute           - The bit mask of attributes to set for the load PE image
 557
 558 Returns:
 559
 560   EFI_SUCCESS            - The image was loaded into memory.
 561   EFI_NOT_FOUND          - The FilePath was not found.
 562   EFI_INVALID_PARAMETER  - One of the parameters has an invalid value.
 563   EFI_BUFFER_TOO_SMALL   - The buffer is too small
 564   EFI_UNSUPPORTED        - The image type is not supported, or the device path cannot be
 565                            parsed to locate the proper protocol for loading the file.
 566   EFI_OUT_OF_RESOURCES   - Image was not loaded due to insufficient resources.
 567 --*/
 568 {
 569   LOADED_IMAGE_PRIVATE_DATA  *Image;
 570   LOADED_IMAGE_PRIVATE_DATA  *ParentImage;
 571   IMAGE_FILE_HANDLE          FHand;
 572   EFI_STATUS                 Status;
 573   EFI_STATUS                 SecurityStatus;
 574   EFI_HANDLE                 DeviceHandle;
 575   UINT32                     AuthenticationStatus;
 576   EFI_DEVICE_PATH_PROTOCOL   *OriginalFilePath;
 577   EFI_DEVICE_PATH_PROTOCOL   *HandleFilePath;
 578   UINTN                      FilePathSize;
 579
 580   SecurityStatus = EFI_SUCCESS;
 581
 582   ASSERT (gEfiCurrentTpl < EFI_TPL_NOTIFY);
 583   ParentImage = NULL;
 584
 585   //
 586   // The caller must pass in a valid ParentImageHandle
 587   //
 588   if (ImageHandle == NULL || ParentImageHandle == NULL) {
 589     return EFI_INVALID_PARAMETER;
 590   }
 591
 592   ParentImage = CoreLoadedImageInfo (ParentImageHandle);
 593   if (ParentImage == NULL) {
 594     DEBUG((EFI_D_LOAD|EFI_D_ERROR, "LoadImageEx: Parent handle not an image handle\n"));
 595     return EFI_INVALID_PARAMETER;
 596   }
 597
 598   //
 599   // Get simple read access to the source file
 600   //
 601   OriginalFilePath = FilePath;
 602   Status = CoreOpenImageFile (
 603              BootPolicy,
 604              SourceBuffer,
 605              SourceSize,
 606              FilePath,
 607              &DeviceHandle,
 608              &FHand,
 609              &AuthenticationStatus
 610              );
 611   if (Status == EFI_ALREADY_STARTED) {
 612     Image = NULL;
 613     goto Done;
 614   } else if (EFI_ERROR (Status)) {
 615     return Status;
 616   }
 617
 618   //
 619   // Verify the Authentication Status through the Security Architectural Protocol
 620   //
 621   if ((gSecurity != NULL) && (OriginalFilePath != NULL)) {
 622     SecurityStatus = gSecurity->FileAuthenticationState (
 623                                   gSecurity,
 624                                   AuthenticationStatus,
 625                                   OriginalFilePath
 626                                   );
 627     if (EFI_ERROR (SecurityStatus) && SecurityStatus != EFI_SECURITY_VIOLATION) {
 628       Status = SecurityStatus;
 629       Image = NULL;
 630       goto Done;
 631     }
 632   }
 633
 634
 635   //
 636   // Allocate a new image structure
 637   //
 638   Image = CoreAllocateZeroBootServicesPool (sizeof(LOADED_IMAGE_PRIVATE_DATA));
 639   if (Image == NULL) {
 640     return EFI_OUT_OF_RESOURCES;
 641   }
 642
 643   //
 644   // Pull out just the file portion of the DevicePath for the LoadedImage FilePath
 645   //
 646   Status = CoreHandleProtocol (DeviceHandle, &gEfiDevicePathProtocolGuid, (VOID **)&HandleFilePath);
 647   if (!EFI_ERROR (Status)) {
 648     FilePathSize = CoreDevicePathSize (HandleFilePath) - sizeof(EFI_DEVICE_PATH_PROTOCOL);
 649     FilePath = (EFI_DEVICE_PATH_PROTOCOL *) ( ((UINT8 *)FilePath) + FilePathSize );
 650   }
 651
 652   //
 653   // Initialize the fields for an internal driver
 654   //
 655   Image->Signature         = LOADED_IMAGE_PRIVATE_DATA_SIGNATURE;
 656   Image->Info.SystemTable  = gST;
 657   Image->Info.DeviceHandle = DeviceHandle;
 658   Image->Info.Revision     = EFI_LOADED_IMAGE_INFORMATION_REVISION;
 659   Image->Info.FilePath     = CoreDuplicateDevicePath (FilePath);
 660   Image->Info.ParentHandle = ParentImageHandle;
 661
 662   if (NumberOfPages != NULL) {
 663     Image->NumberOfPages = *NumberOfPages ;
 664   } else {
 665     Image->NumberOfPages = 0 ;
 666   }
 667
 668   //
 669   // Install the protocol interfaces for this image
 670   // don't fire notifications yet
 671   //
 672   Status = CoreInstallProtocolInterfaceNotify (
 673              &Image->Handle,
 674              &gEfiLoadedImageProtocolGuid,
 675              EFI_NATIVE_INTERFACE,
 676              &Image->Info,
 677              FALSE
 678              );
 679   if (EFI_ERROR (Status)) {
 680     goto Done;
 681   }
 682
 683   //
 684   // Load the image.  If EntryPoint is Null, it will not be set.
 685   //
 686   Status = CoreLoadPeImage (&FHand, Image, DstBuffer, EntryPoint, Attribute);
 687   if (EFI_ERROR (Status)) {
 688     if ((Status == EFI_BUFFER_TOO_SMALL) || (Status == EFI_OUT_OF_RESOURCES)) {
 689       if (NumberOfPages != NULL) {
 690         *NumberOfPages = Image->NumberOfPages;
 691       }
 692     }
 693     goto Done;
 694   }
 695
 696   //
 697   // Register the image in the Debug Image Info Table if the attribute is set
 698   //
 699   if (Attribute & EFI_LOAD_PE_IMAGE_ATTRIBUTE_DEBUG_IMAGE_INFO_TABLE_REGISTRATION) {
 700     CoreNewDebugImageInfoEntry (EFI_DEBUG_IMAGE_INFO_TYPE_NORMAL, &Image->Info, Image->Handle);
 701   }
 702
 703   //
 704   //Reinstall loaded image protocol to fire any notifications
 705   //
 706   Status = CoreReinstallProtocolInterface (
 707              Image->Handle,
 708              &gEfiLoadedImageProtocolGuid,
 709              &Image->Info,
 710              &Image->Info
 711              );
 712   if (EFI_ERROR (Status)) {
 713     goto Done;
 714   }
 715
 716
 717   //
 718   // Success.  Return the image handle
 719   //
 720   *ImageHandle = Image->Handle;
 721
 722 Done:
 723   //
 724   // All done accessing the source file
 725   // If we allocated the Source buffer, free it
 726   //
 727   if (FHand.FreeBuffer) {
 728     CoreFreePool (FHand.Source);
 729   }
 730
 731   //
 732   // There was an error.  If there's an Image structure, free it
 733   //
 734   if (EFI_ERROR (Status)) {
 735     if (Image != NULL) {
 736       CoreUnloadAndCloseImage (Image, (BOOLEAN)(DstBuffer == 0));
 737       *ImageHandle = NULL;
 738     }
 739   } else if (EFI_ERROR (SecurityStatus)) {
 740     Status = SecurityStatus;
 741   }
 742
 743   return Status;
 744 }
 745
 746
 747
 748 EFI_STATUS
 749 EFIAPI
 750 CoreLoadImage (
 751   IN BOOLEAN                    BootPolicy,
 752   IN EFI_HANDLE                 ParentImageHandle,
 753   IN EFI_DEVICE_PATH_PROTOCOL   *FilePath,
 754   IN VOID                       *SourceBuffer   OPTIONAL,
 755   IN UINTN                      SourceSize,
 756   OUT EFI_HANDLE                *ImageHandle
 757   )
 758 /*++
 759
 760 Routine Description:
 761
 762   Loads an EFI image into memory and returns a handle to the image.
 763
 764 Arguments:
 765
 766   BootPolicy          - If TRUE, indicates that the request originates from the boot manager,
 767                         and that the boot manager is attempting to load FilePath as a boot selection.
 768   ParentImageHandle   - The caller's image handle.
 769   FilePath            - The specific file path from which the image is loaded.
 770   SourceBuffer        - If not NULL, a pointer to the memory location containing a copy of
 771                         the image to be loaded.
 772   SourceSize          - The size in bytes of SourceBuffer.
 773   ImageHandle         - Pointer to the returned image handle that is created when the image
 774                         is successfully loaded.
 775
 776 Returns:
 777
 778   EFI_SUCCESS            - The image was loaded into memory.
 779   EFI_NOT_FOUND          - The FilePath was not found.
 780   EFI_INVALID_PARAMETER  - One of the parameters has an invalid value.
 781   EFI_UNSUPPORTED        - The image type is not supported, or the device path cannot be
 782                            parsed to locate the proper protocol for loading the file.
 783   EFI_OUT_OF_RESOURCES   - Image was not loaded due to insufficient resources.
 784 --*/
 785 {
 786   EFI_STATUS    Status;
 787
 788   PERF_START (NULL, "LoadImage", NULL, 0);
 789
 790   Status = CoreLoadImageCommon (
 791              BootPolicy,
 792              ParentImageHandle,
 793              FilePath,
 794              SourceBuffer,
 795              SourceSize,
 796              (EFI_PHYSICAL_ADDRESS)NULL,
 797              NULL,
 798              ImageHandle,
 799              NULL,
 800              EFI_LOAD_PE_IMAGE_ATTRIBUTE_RUNTIME_REGISTRATION | EFI_LOAD_PE_IMAGE_ATTRIBUTE_DEBUG_IMAGE_INFO_TABLE_REGISTRATION
 801              );
 802
 803   PERF_END (NULL, "LoadImage", NULL, 0);
 804
 805   return Status;
 806 }
 807
 808
 809 EFI_STATUS
 810 EFIAPI
 811 CoreLoadImageEx (
 812   IN  EFI_PE32_IMAGE_PROTOCOL          *This,
 813   IN  EFI_HANDLE                       ParentImageHandle,
 814   IN  EFI_DEVICE_PATH_PROTOCOL         *FilePath,
 815   IN  VOID                             *SourceBuffer       OPTIONAL,
 816   IN  UINTN                            SourceSize,
 817   IN  EFI_PHYSICAL_ADDRESS             DstBuffer           OPTIONAL,
 818   OUT UINTN                            *NumberOfPages      OPTIONAL,
 819   OUT EFI_HANDLE                       *ImageHandle,
 820   OUT EFI_PHYSICAL_ADDRESS             *EntryPoint         OPTIONAL,
 821   IN  UINT32                           Attribute
 822   )
 823 /*++
 824
 825 Routine Description:
 826
 827   Loads an EFI image into memory and returns a handle to the image with extended parameters.
 828
 829 Arguments:
 830
 831   This                - Calling context
 832   ParentImageHandle   - The caller's image handle.
 833   FilePath            - The specific file path from which the image is loaded.
 834   SourceBuffer        - If not NULL, a pointer to the memory location containing a copy of
 835                         the image to be loaded.
 836   SourceSize          - The size in bytes of SourceBuffer.
 837   DstBuffer           - The buffer to store the image.
 838   NumberOfPages       - For input, specifies the space size of the image by caller if not NULL.
 839                         For output, specifies the actual space size needed.
 840   ImageHandle         - Image handle for output.
 841   EntryPoint          - Image entry point for output.
 842   Attribute           - The bit mask of attributes to set for the load PE image.
 843
 844 Returns:
 845
 846   EFI_SUCCESS            - The image was loaded into memory.
 847   EFI_NOT_FOUND          - The FilePath was not found.
 848   EFI_INVALID_PARAMETER  - One of the parameters has an invalid value.
 849   EFI_UNSUPPORTED        - The image type is not supported, or the device path cannot be
 850                            parsed to locate the proper protocol for loading the file.
 851   EFI_OUT_OF_RESOURCES   - Image was not loaded due to insufficient resources.
 852 --*/
 853 {
 854   return CoreLoadImageCommon (
 855            TRUE,
 856            ParentImageHandle,
 857            FilePath,
 858            SourceBuffer,
 859            SourceSize,
 860            DstBuffer,
 861            NumberOfPages,
 862            ImageHandle,
 863            EntryPoint,
 864            Attribute
 865            );
 866 }
 867
 868
 869
 870
 871 EFI_STATUS
 872 EFIAPI
 873 CoreStartImage (
 874   IN EFI_HANDLE  ImageHandle,
 875   OUT UINTN      *ExitDataSize,
 876   OUT CHAR16     **ExitData  OPTIONAL
 877   )
 878 /*++
 879
 880 Routine Description:
 881
 882   Transfer control to a loaded image's entry point.
 883
 884 Arguments:
 885
 886   ImageHandle     - Handle of image to be started.
 887
 888   ExitDataSize    - Pointer of the size to ExitData
 889
 890   ExitData        - Pointer to a pointer to a data buffer that includes a Null-terminated
 891                     Unicode string, optionally followed by additional binary data. The string
 892                     is a description that the caller may use to further indicate the reason for
 893                     the image's exit.
 894
 895 Returns:
 896
 897   EFI_INVALID_PARAMETER     - Invalid parameter
 898
 899   EFI_OUT_OF_RESOURCES       - No enough buffer to allocate
 900
 901   EFI_SUCCESS               - Successfully transfer control to the image's entry point.
 902
 903 --*/
 904 {
 905   EFI_STATUS                    Status;
 906   LOADED_IMAGE_PRIVATE_DATA     *Image;
 907   LOADED_IMAGE_PRIVATE_DATA     *LastImage;
 908   UINT64                        HandleDatabaseKey;
 909   UINTN                         SetJumpFlag;
 910
 911   Image = CoreLoadedImageInfo (ImageHandle);
 912   if (Image == NULL_HANDLE  ||  Image->Started) {
 913     return EFI_INVALID_PARAMETER;
 914   }
 915
 916   //
 917   // Don't profile Objects or invalid start requests
 918   //
 919   PERF_START (ImageHandle, START_IMAGE_TOK, NULL, 0);
 920
 921
 922   //
 923   // Push the current start image context, and
 924   // link the current image to the head.   This is the
 925   // only image that can call Exit()
 926   //
 927   HandleDatabaseKey = CoreGetHandleDatabaseKey ();
 928   LastImage         = mCurrentImage;
 929   mCurrentImage     = Image;
 930   Image->Tpl        = gEfiCurrentTpl;
 931
 932   //
 933   // Set long jump for Exit() support
 934   // JumpContext must be aligned on a CPU specific boundary.
 935   // Overallocate the buffer and force the required alignment
 936   //
 937   Image->JumpBuffer = CoreAllocateBootServicesPool (sizeof (BASE_LIBRARY_JUMP_BUFFER) + BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT);
 938   if (Image->JumpBuffer == NULL) {
 939     PERF_END (ImageHandle, START_IMAGE_TOK, NULL, 0);
 940     return EFI_OUT_OF_RESOURCES;
 941   }
 942   Image->JumpContext = ALIGN_POINTER (Image->JumpBuffer, BASE_LIBRARY_JUMP_BUFFER_ALIGNMENT);
 943
 944   SetJumpFlag = SetJump (Image->JumpContext);
 945   //
 946   // The initial call to SetJump() must always return 0.
 947   // Subsequent calls to LongJump() cause a non-zero value to be returned by SetJump().
 948   //
 949   if (!SetJumpFlag) {
 950     //
 951     // Call the image's entry point
 952     //
 953     Image->Started = TRUE;
 954     Image->Status = Image->EntryPoint (ImageHandle, Image->Info.SystemTable);
 955
 956     //
 957     // Add some debug information if the image returned with error.
 958     // This make the user aware and check if the driver image have already released
 959     // all the resource in this situation.
 960     //
 961     DEBUG_CODE_BEGIN ();
 962       if (EFI_ERROR (Image->Status)) {
 963         DEBUG ((EFI_D_ERROR, "Error: Image at %10p start failed: %r\n", Image->Info.ImageBase, Image->Status));
 964       }
 965     DEBUG_CODE_END ();
 966
 967     //
 968     // If the image returns, exit it through Exit()
 969     //
 970     CoreExit (ImageHandle, Image->Status, 0, NULL);
 971   }
 972
 973   //
 974   // Image has completed.  Verify the tpl is the same
 975   //
 976   ASSERT (Image->Tpl == gEfiCurrentTpl);
 977   CoreRestoreTpl (Image->Tpl);
 978
 979   CoreFreePool (Image->JumpBuffer);
 980
 981   //
 982   // Pop the current start image context
 983   //
 984   mCurrentImage = LastImage;
 985
 986   //
 987   // Go connect any handles that were created or modified while the image executed.
 988   //
 989   CoreConnectHandlesByKey (HandleDatabaseKey);
 990
 991   //
 992   // Handle the image's returned ExitData
 993   //
 994   DEBUG_CODE_BEGIN ();
 995     if (Image->ExitDataSize != 0 || Image->ExitData != NULL) {
 996
 997       DEBUG (
 998         (EFI_D_LOAD,
 999         "StartImage: ExitDataSize %d, ExitData %x",
1000                             Image->ExitDataSize,
1001         Image->ExitData)
1002         );
1003       if (Image->ExitData != NULL) {
1004         DEBUG ((EFI_D_LOAD, " (%hs)", Image->ExitData));
1005       }
1006       DEBUG ((EFI_D_LOAD, "\n"));
1007     }
1008   DEBUG_CODE_END ();
1009
1010   //
1011   //  Return the exit data to the caller
1012   //
1013   if (ExitData != NULL && ExitDataSize != NULL) {
1014     *ExitDataSize = Image->ExitDataSize;
1015     *ExitData     = Image->ExitData;
1016   } else {
1017     //
1018     // Caller doesn't want the exit data, free it
1019     //
1020     CoreFreePool (Image->ExitData);
1021     Image->ExitData = NULL;
1022   }
1023
1024   //
1025   // Save the Status because Image will get destroyed if it is unloaded.
1026   //
1027   Status = Image->Status;
1028
1029   //
1030   // If the image returned an error, or if the image is an application
1031   // unload it
1032   //
1033   if (EFI_ERROR (Image->Status) || Image->Type == EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION) {
1034     CoreUnloadAndCloseImage (Image, TRUE);
1035   }
1036
1037   //
1038   // Done
1039   //
1040   PERF_END (ImageHandle, START_IMAGE_TOK, NULL, 0);
1041   return Status;
1042 }
1043
1044
1045 VOID
1046 CoreUnloadAndCloseImage (
1047   IN LOADED_IMAGE_PRIVATE_DATA  *Image,
1048   IN BOOLEAN                    FreePage
1049   )
1050 /*++
1051
1052 Routine Description:
1053
1054   Unloads EFI image from memory.
1055
1056 Arguments:
1057
1058   Image      - EFI image
1059   FreePage   - Free allocated pages
1060
1061 Returns:
1062
1063   None
1064
1065 --*/
1066 {
1067   EFI_STATUS                          Status;
1068   UINTN                               HandleCount;
1069   EFI_HANDLE                          *HandleBuffer;
1070   UINTN                               HandleIndex;
1071   EFI_GUID                            **ProtocolGuidArray;
1072   UINTN                               ArrayCount;
1073   UINTN                               ProtocolIndex;
1074   EFI_OPEN_PROTOCOL_INFORMATION_ENTRY *OpenInfo;
1075   UINTN                               OpenInfoCount;
1076   UINTN                               OpenInfoIndex;
1077
1078   if (Image->Ebc != NULL) {
1079     //
1080     // If EBC protocol exists we must perform cleanups for this image.
1081     //
1082     Image->Ebc->UnloadImage (Image->Ebc, Image->Handle);
1083   }
1084
1085   //
1086   // Unload image, free Image->ImageContext->ModHandle
1087   //
1088   gEfiPeiPeCoffLoader->UnloadImage (gEfiPeiPeCoffLoader, &Image->ImageContext);
1089
1090   //
1091   // Free our references to the image handle
1092   //
1093   if (Image->Handle != NULL_HANDLE) {
1094
1095     Status = CoreLocateHandleBuffer (
1096                AllHandles,
1097                NULL,
1098                NULL,
1099                &HandleCount,
1100                &HandleBuffer
1101                );
1102     if (!EFI_ERROR (Status)) {
1103       for (HandleIndex = 0; HandleIndex < HandleCount; HandleIndex++) {
1104         Status = CoreProtocolsPerHandle (
1105                    HandleBuffer[HandleIndex],
1106                    &ProtocolGuidArray,
1107                    &ArrayCount
1108                    );
1109         if (!EFI_ERROR (Status)) {
1110           for (ProtocolIndex = 0; ProtocolIndex < ArrayCount; ProtocolIndex++) {
1111             Status = CoreOpenProtocolInformation (
1112                        HandleBuffer[HandleIndex],
1113                        ProtocolGuidArray[ProtocolIndex],
1114                        &OpenInfo,
1115                        &OpenInfoCount
1116                        );
1117             if (!EFI_ERROR (Status)) {
1118               for (OpenInfoIndex = 0; OpenInfoIndex < OpenInfoCount; OpenInfoIndex++) {
1119                 if (OpenInfo[OpenInfoIndex].AgentHandle == Image->Handle) {
1120                   Status = CoreCloseProtocol (
1121                              HandleBuffer[HandleIndex],
1122                              ProtocolGuidArray[ProtocolIndex],
1123                              Image->Handle,
1124                              OpenInfo[OpenInfoIndex].ControllerHandle
1125                              );
1126                 }
1127               }
1128               if (OpenInfo != NULL) {
1129                 CoreFreePool(OpenInfo);
1130               }
1131             }
1132           }
1133           if (ProtocolGuidArray != NULL) {
1134             CoreFreePool(ProtocolGuidArray);
1135           }
1136         }
1137       }
1138       if (HandleBuffer != NULL) {
1139         CoreFreePool (HandleBuffer);
1140       }
1141     }
1142
1143     CoreRemoveDebugImageInfoEntry (Image->Handle);
1144
1145     Status = CoreUninstallProtocolInterface (
1146                Image->Handle,
1147                &gEfiLoadedImageProtocolGuid,
1148                &Image->Info
1149                );
1150   }
1151
1152   if (Image->RuntimeData != NULL) {
1153     if (Image->RuntimeData->Link.ForwardLink != NULL) {
1154       //
1155       // Remove the Image from the Runtime Image list as we are about to Free it!
1156       //
1157       RemoveEntryList (&Image->RuntimeData->Link);
1158     }
1159     CoreFreePool (Image->RuntimeData);
1160   }
1161
1162   //
1163   // Free the Image from memory
1164   //
1165   if ((Image->ImageBasePage != 0) && FreePage) {
1166     CoreFreePages (Image->ImageBasePage, Image->NumberOfPages);
1167   }
1168
1169   //
1170   // Done with the Image structure
1171   //
1172   if (Image->Info.FilePath != NULL) {
1173     CoreFreePool (Image->Info.FilePath);
1174   }
1175
1176   if (Image->FixupData != NULL) {
1177     CoreFreePool (Image->FixupData);
1178   }
1179
1180   CoreFreePool (Image);
1181 }
1182
1183
1184
1185 EFI_STATUS
1186 EFIAPI
1187 CoreExit (
1188   IN EFI_HANDLE  ImageHandle,
1189   IN EFI_STATUS  Status,
1190   IN UINTN       ExitDataSize,
1191   IN CHAR16      *ExitData  OPTIONAL
1192   )
1193 /*++
1194
1195 Routine Description:
1196
1197   Terminates the currently loaded EFI image and returns control to boot services.
1198
1199 Arguments:
1200
1201   ImageHandle       - Handle that identifies the image. This parameter is passed to the image
1202                       on entry.
1203   Status            - The image's exit code.
1204   ExitDataSize      - The size, in bytes, of ExitData. Ignored if ExitStatus is
1205                       EFI_SUCCESS.
1206   ExitData          - Pointer to a data buffer that includes a Null-terminated Unicode string,
1207                       optionally followed by additional binary data. The string is a
1208                       description that the caller may use to further indicate the reason for
1209                       the image's exit.
1210
1211 Returns:
1212
1213   EFI_INVALID_PARAMETER     - Image handle is NULL or it is not current image.
1214
1215   EFI_SUCCESS               - Successfully terminates the currently loaded EFI image.
1216
1217   EFI_ACCESS_DENIED         - Should never reach there.
1218
1219   EFI_OUT_OF_RESOURCES      - Could not allocate pool
1220
1221 --*/
1222 {
1223   LOADED_IMAGE_PRIVATE_DATA  *Image;
1224
1225   EfiAcquireLock (&mBsExitLock);
1226
1227   Image = CoreLoadedImageInfo (ImageHandle);
1228   if (Image == NULL_HANDLE) {
1229     Status = EFI_INVALID_PARAMETER;
1230     goto Done;
1231   }
1232
1233   if (!Image->Started) {
1234     //
1235     // The image has not been started so just free its resources
1236     //
1237     CoreUnloadAndCloseImage (Image, TRUE);
1238     Status = EFI_SUCCESS;
1239     goto Done;
1240   }
1241
1242   //
1243   // Image has been started, verify this image can exit
1244   //
1245   if (Image != mCurrentImage) {
1246     DEBUG ((EFI_D_LOAD|EFI_D_ERROR, "Exit: Image is not exitable image\n"));
1247     Status = EFI_INVALID_PARAMETER;
1248     goto Done;
1249   }
1250
1251   //
1252   // Set status
1253   //
1254   Image->Status = Status;
1255
1256   //
1257   // If there's ExitData info, move it
1258   //
1259   if (ExitData != NULL) {
1260     Image->ExitDataSize = ExitDataSize;
1261     Image->ExitData = CoreAllocateBootServicesPool (Image->ExitDataSize);
1262     if (Image->ExitData == NULL) {
1263       Status = EFI_OUT_OF_RESOURCES;
1264       goto Done;
1265     }
1266     CopyMem (Image->ExitData, ExitData, Image->ExitDataSize);
1267   }
1268
1269   EfiReleaseLock (&mBsExitLock);
1270   //
1271   // return to StartImage
1272   //
1273   LongJump (Image->JumpContext, (UINTN)-1);
1274
1275   //
1276   // If we return from LongJump, then it is an error
1277   //
1278   ASSERT (FALSE);
1279   Status = EFI_ACCESS_DENIED;
1280 Done:
1281   EfiReleaseLock (&mBsExitLock);
1282   return Status;
1283 }
1284
1285
1286
1287 EFI_STATUS
1288 EFIAPI
1289 CoreUnloadImage (
1290   IN EFI_HANDLE  ImageHandle
1291   )
1292 /*++
1293
1294 Routine Description:
1295
1296   Unloads an image.
1297
1298 Arguments:
1299
1300   ImageHandle           - Handle that identifies the image to be unloaded.
1301
1302 Returns:
1303
1304  EFI_SUCCESS            - The image has been unloaded.
1305  EFI_UNSUPPORTED        - The image has been sarted, and does not support unload.
1306  EFI_INVALID_PARAMPETER - ImageHandle is not a valid image handle.
1307
1308 --*/
1309 {
1310   EFI_STATUS                 Status;
1311   LOADED_IMAGE_PRIVATE_DATA  *Image;
1312
1313   EfiAcquireLock (&mBsUnloadImageLock);
1314
1315   Image = CoreLoadedImageInfo (ImageHandle);
1316   if (Image == NULL ) {
1317     //
1318     // The image handle is not valid
1319     //
1320     Status = EFI_INVALID_PARAMETER;
1321     goto Done;
1322   }
1323
1324   if (Image->Started) {
1325     //
1326     // The image has been started, request it to unload.
1327     //
1328     Status = EFI_UNSUPPORTED;
1329     if (Image->Info.Unload != NULL) {
1330       Status = Image->Info.Unload (ImageHandle);
1331     }
1332
1333   } else {
1334     //
1335     // This Image hasn't been started, thus it can be unloaded
1336     //
1337     Status = EFI_SUCCESS;
1338   }
1339
1340
1341   if (!EFI_ERROR (Status)) {
1342     //
1343     // if the Image was not started or Unloaded O.K. then clean up
1344     //
1345     CoreUnloadAndCloseImage (Image, TRUE);
1346   }
1347
1348 Done:
1349   EfiReleaseLock (&mBsUnloadImageLock);
1350   return Status;
1351 }
1352
1353
1354 EFI_STATUS
1355 EFIAPI
1356 CoreUnloadImageEx (
1357   IN EFI_PE32_IMAGE_PROTOCOL  *This,
1358   IN EFI_HANDLE                         ImageHandle
1359   )
1360 /*++
1361
1362 Routine Description:
1363
1364   Unload the specified image.
1365
1366 Arguments:
1367
1368   This              - Indicates the calling context.
1369
1370   ImageHandle       - The specified image handle.
1371
1372 Returns:
1373
1374   EFI_INVALID_PARAMETER       - Image handle is NULL.
1375
1376   EFI_UNSUPPORTED             - Attempt to unload an unsupported image.
1377
1378   EFI_SUCCESS                 - Image successfully unloaded.
1379
1380 --*/
1381 {
1382   return CoreUnloadImage (ImageHandle);
1383 }