diff options
Diffstat (limited to 'Core/MdePkg/Library/UefiDriverEntryPoint/DriverEntryPoint.c')
| -rw-r--r-- | Core/MdePkg/Library/UefiDriverEntryPoint/DriverEntryPoint.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/UefiDriverEntryPoint/DriverEntryPoint.c b/Core/MdePkg/Library/UefiDriverEntryPoint/DriverEntryPoint.c new file mode 100644 index 0000000000..f5da5ac4ad --- /dev/null +++ b/Core/MdePkg/Library/UefiDriverEntryPoint/DriverEntryPoint.c @@ -0,0 +1,173 @@ +/** @file
+ Entry point to a EFI/DXE driver.
+
+Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+
+
+#include <Uefi.h>
+
+#include <Protocol/LoadedImage.h>
+
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+
+
+/**
+ Unloads an image from memory.
+
+ This function is a callback that a driver registers to do cleanup
+ when the UnloadImage boot service function is called.
+
+ @param ImageHandle The handle to the image to unload.
+
+ @return Status returned by all unload().
+
+**/
+EFI_STATUS
+EFIAPI
+_DriverUnloadHandler (
+ EFI_HANDLE ImageHandle
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // If an UnloadImage() handler is specified, then call it
+ //
+ Status = ProcessModuleUnloadList (ImageHandle);
+
+ //
+ // If the driver specific unload handler does not return an error, then call all of the
+ // library destructors. If the unload handler returned an error, then the driver can not be
+ // unloaded, and the library destructors should not be called
+ //
+ if (!EFI_ERROR (Status)) {
+ ProcessLibraryDestructorList (ImageHandle, gST);
+ }
+
+ //
+ // Return the status from the driver specific unload handler
+ //
+ return Status;
+}
+
+
+/**
+ The entry point of PE/COFF Image for a DXE Driver, DXE Runtime Driver, DXE SMM
+ Driver, or UEFI Driver.
+
+ This function is the entry point for a DXE Driver, DXE Runtime Driver, DXE SMM Driver,
+ or UEFI Driver. This function must call ProcessLibraryConstructorList() and
+ ProcessModuleEntryPointList(). If the return status from ProcessModuleEntryPointList()
+ is an error status, then ProcessLibraryDestructorList() must be called. The return
+ value from ProcessModuleEntryPointList() is returned. If _gDriverUnloadImageCount
+ is greater than zero, then an unload handler must be registered for this image
+ and the unload handler must invoke ProcessModuleUnloadList().
+ If _gUefiDriverRevision is not zero and SystemTable->Hdr.Revision is less than
+ _gUefiDriverRevison, then return EFI_INCOMPATIBLE_VERSION.
+
+
+ @param ImageHandle The image handle of the DXE Driver, DXE Runtime Driver,
+ DXE SMM Driver, or UEFI Driver.
+ @param SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The DXE Driver, DXE Runtime Driver, DXE SMM
+ Driver, or UEFI Driver exited normally.
+ @retval EFI_INCOMPATIBLE_VERSION _gUefiDriverRevision is greater than
+ SystemTable->Hdr.Revision.
+ @retval Other Return value from ProcessModuleEntryPointList().
+
+**/
+EFI_STATUS
+EFIAPI
+_ModuleEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
+
+ if (_gUefiDriverRevision != 0) {
+ //
+ // Make sure that the EFI/UEFI spec revision of the platform is >= EFI/UEFI spec revision of the driver
+ //
+ if (SystemTable->Hdr.Revision < _gUefiDriverRevision) {
+ return EFI_INCOMPATIBLE_VERSION;
+ }
+ }
+
+ //
+ // Call constructor for all libraries
+ //
+ ProcessLibraryConstructorList (ImageHandle, SystemTable);
+
+ //
+ // Install unload handler...
+ //
+ if (_gDriverUnloadImageCount != 0) {
+ Status = gBS->HandleProtocol (
+ ImageHandle,
+ &gEfiLoadedImageProtocolGuid,
+ (VOID **)&LoadedImage
+ );
+ ASSERT_EFI_ERROR (Status);
+ LoadedImage->Unload = _DriverUnloadHandler;
+ }
+
+ //
+ // Call the driver entry point
+ //
+ Status = ProcessModuleEntryPointList (ImageHandle, SystemTable);
+
+ //
+ // If all of the drivers returned errors, then invoke all of the library destructors
+ //
+ if (EFI_ERROR (Status)) {
+ ProcessLibraryDestructorList (ImageHandle, SystemTable);
+ }
+
+ //
+ // Return the cummalative return status code from all of the driver entry points
+ //
+ return Status;
+}
+
+
+/**
+ Required by the EBC compiler and identical in functionality to _ModuleEntryPoint().
+
+ This function is required to call _ModuleEntryPoint() passing in ImageHandle,
+ and SystemTable.
+
+ @param ImageHandle The image handle of the DXE Driver, DXE Runtime Driver, DXE
+ SMM Driver, or UEFI Driver.
+ @param SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The DXE Driver, DXE Runtime Driver, DXE SMM
+ Driver, or UEFI Driver exited normally.
+ @retval EFI_INCOMPATIBLE_VERSION _gUefiDriverRevision is greater than
+ SystemTable->Hdr.Revision.
+ @retval Other Return value from ProcessModuleEntryPointList().
+**/
+EFI_STATUS
+EFIAPI
+EfiMain (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ return _ModuleEntryPoint (ImageHandle, SystemTable);
+}
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