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authorbxing <bxing@6f19259b-4bc3-4df7-8a09-765794883524>2007-06-15 10:02:42 +0000
committerbxing <bxing@6f19259b-4bc3-4df7-8a09-765794883524>2007-06-15 10:02:42 +0000
commit79964ac84ea0ca6c68d0dea38245fa83ff1945d1 (patch)
tree1789b660ac3ff9c9b3378ab1ac362028eccd4704 /IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint
parent5879b8754ac3c2e7a141bac79f6b2391e6ac0441 (diff)
downloadedk2-platforms-79964ac84ea0ca6c68d0dea38245fa83ff1945d1.tar.xz
Initial directory structure of IntelFrameworkPkg.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2657 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint')
-rw-r--r--IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint/DriverEntryPoint.c282
-rw-r--r--IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint/DxeSmmDriverEntryPoint.msa56
2 files changed, 338 insertions, 0 deletions
diff --git a/IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint/DriverEntryPoint.c b/IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint/DriverEntryPoint.c
new file mode 100644
index 0000000000..cf50f2395b
--- /dev/null
+++ b/IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint/DriverEntryPoint.c
@@ -0,0 +1,282 @@
+/** @file
+ Entry point to a EFI/DXE driver.
+
+Copyright (c) 2006, Intel Corporation<BR>
+All rights reserved. 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 <FrameworkDxe.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DxeSmmDriverEntryPoint.h>
+
+#include <Protocol/LoadedImage.h>
+#include <Protocol/SmmBase.h>
+
+EFI_BOOT_SERVICES *mBS;
+
+/**
+ This function returns the size, in bytes,
+ of the device path data structure specified by DevicePath.
+ If DevicePath is NULL, then 0 is returned.
+
+ @param DevicePath A pointer to a device path data structure.
+
+ @return The size of a device path in bytes.
+
+**/
+STATIC
+UINTN
+EFIAPI
+SmmGetDevicePathSize (
+ IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
+ )
+{
+ CONST EFI_DEVICE_PATH_PROTOCOL *Start;
+
+ if (DevicePath == NULL) {
+ return 0;
+ }
+
+ //
+ // Search for the end of the device path structure
+ //
+ Start = DevicePath;
+ while (!EfiIsDevicePathEnd (DevicePath)) {
+ DevicePath = EfiNextDevicePathNode (DevicePath);
+ }
+
+ //
+ // Compute the size and add back in the size of the end device path structure
+ //
+ return ((UINTN) DevicePath - (UINTN) Start) + sizeof (EFI_DEVICE_PATH_PROTOCOL);
+}
+
+/**
+ This function appends the device path SecondDevicePath
+ to every device path instance in FirstDevicePath.
+
+ @param FirstDevicePath A pointer to a device path data structure.
+
+ @param SecondDevicePath A pointer to a device path data structure.
+
+ @return A pointer to the new device path is returned.
+ NULL is returned if space for the new device path could not be allocated from pool.
+ It is up to the caller to free the memory used by FirstDevicePath and SecondDevicePath
+ if they are no longer needed.
+
+**/
+EFI_DEVICE_PATH_PROTOCOL *
+EFIAPI
+SmmAppendDevicePath (
+ IN CONST EFI_DEVICE_PATH_PROTOCOL *FirstDevicePath,
+ IN CONST EFI_DEVICE_PATH_PROTOCOL *SecondDevicePath
+ )
+{
+ EFI_STATUS Status;
+ UINTN Size;
+ UINTN Size1;
+ UINTN Size2;
+ EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath2;
+
+ ASSERT (FirstDevicePath != NULL && SecondDevicePath != NULL);
+
+ //
+ // Allocate space for the combined device path. It only has one end node of
+ // length EFI_DEVICE_PATH_PROTOCOL
+ //
+ Size1 = SmmGetDevicePathSize (FirstDevicePath);
+ Size2 = SmmGetDevicePathSize (SecondDevicePath);
+ Size = Size1 + Size2 - sizeof (EFI_DEVICE_PATH_PROTOCOL);
+
+ Status = mBS->AllocatePool (EfiBootServicesData, Size, (VOID **) &NewDevicePath);
+
+ if (EFI_SUCCESS == Status) {
+ mBS->CopyMem ((VOID *) NewDevicePath, (VOID *) FirstDevicePath, Size1);
+ //
+ // Over write Src1 EndNode and do the copy
+ //
+ DevicePath2 = (EFI_DEVICE_PATH_PROTOCOL *) ((CHAR8 *) NewDevicePath + (Size1 - sizeof (EFI_DEVICE_PATH_PROTOCOL)));
+ mBS->CopyMem ((VOID *) DevicePath2, (VOID *) SecondDevicePath, Size2);
+ }
+
+ return NewDevicePath;
+}
+
+/**
+ Unload function that is registered in the LoadImage protocol. It un-installs
+ protocols produced and deallocates pool used by the driver. Called by the core
+ when unloading the driver.
+
+ @param ImageHandle ImageHandle of the unloaded driver
+
+ @return Status of the ProcessModuleUnloadList.
+
+**/
+EFI_STATUS
+EFIAPI
+_DriverUnloadHandler (
+ EFI_HANDLE ImageHandle
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // Call the unload handlers for all the modules
+ //
+ 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;
+}
+
+/**
+ Enrty point to DXE SMM Driver.
+
+ @param ImageHandle ImageHandle of the loaded driver.
+ @param SystemTable Pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS One or more of the drivers returned a success code.
+ @retval !EFI_SUCESS The return status from the last driver entry point in the list.
+
+**/
+EFI_STATUS
+EFIAPI
+_ModuleEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
+ EFI_SMM_BASE_PROTOCOL *SmmBase;
+ BOOLEAN InSmm;
+ EFI_DEVICE_PATH_PROTOCOL *CompleteFilePath;
+ EFI_DEVICE_PATH_PROTOCOL *ImageDevicePath;
+ EFI_HANDLE Handle;
+
+ //
+ // Cache a pointer to the Boot Services Table
+ //
+ mBS = SystemTable->BootServices;
+
+ //
+ // Retrieve the Loaded Image Protocol
+ //
+ Status = mBS->HandleProtocol (
+ ImageHandle,
+ &gEfiLoadedImageProtocolGuid,
+ (VOID*)&LoadedImage
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Retrieve SMM Base Protocol
+ //
+ Status = mBS->LocateProtocol (
+ &gEfiSmmBaseProtocolGuid,
+ NULL,
+ (VOID **) &SmmBase
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Check to see if we are already in SMM
+ //
+ SmmBase->InSmm (SmmBase, &InSmm);
+
+ //
+ //
+ //
+ if (!InSmm) {
+ //
+ // Retrieve the Device Path Protocol from the DeviceHandle tha this driver was loaded from
+ //
+ Status = mBS->HandleProtocol (
+ LoadedImage->DeviceHandle,
+ &gEfiDevicePathProtocolGuid,
+ (VOID*)&ImageDevicePath
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Build the full device path to the currently execuing image
+ //
+ CompleteFilePath = SmmAppendDevicePath (ImageDevicePath, LoadedImage->FilePath);
+
+ //
+ // Load the image in memory to SMRAM; it will automatically generate the
+ // SMI.
+ //
+ Status = SmmBase->Register (SmmBase, CompleteFilePath, NULL, 0, &Handle, FALSE);
+ ASSERT_EFI_ERROR (Status);
+ return Status;
+ }
+
+ //
+ // Call constructor for all libraries
+ //
+ ProcessLibraryConstructorList (ImageHandle, SystemTable);
+
+ //
+ // Optionally install the unload handler
+ //
+ if (_gDriverUnloadImageCount > 0) {
+ Status = mBS->HandleProtocol (
+ ImageHandle,
+ &gEfiLoadedImageProtocolGuid,
+ (VOID **)&LoadedImage
+ );
+ ASSERT_EFI_ERROR (Status);
+ LoadedImage->Unload = _DriverUnloadHandler;
+ }
+
+ //
+ // Call the list of driver entry points
+ //
+ Status = ProcessModuleEntryPointList (ImageHandle, SystemTable);
+ if (EFI_ERROR (Status)) {
+ ProcessLibraryDestructorList (ImageHandle, SystemTable);
+ }
+
+ return Status;
+}
+
+/**
+ Enrty point wrapper of DXE SMM Driver.
+
+ @param ImageHandle ImageHandle of the loaded driver.
+ @param SystemTable Pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS One or more of the drivers returned a success code.
+ @retval !EFI_SUCESS The return status from the last driver entry point in the list.
+
+**/
+EFI_STATUS
+EFIAPI
+EfiMain (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ return _ModuleEntryPoint (ImageHandle, SystemTable);
+}
diff --git a/IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint/DxeSmmDriverEntryPoint.msa b/IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint/DxeSmmDriverEntryPoint.msa
new file mode 100644
index 0000000000..605579758c
--- /dev/null
+++ b/IntelFrameworkPkg/Library/DxeSmmDriverEntryPoint/DxeSmmDriverEntryPoint.msa
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+ <MsaHeader>
+ <ModuleName>DxeSmmDriverEntryPoint</ModuleName>
+ <ModuleType>DXE_SMM_DRIVER</ModuleType>
+ <GuidValue>79C5C7B7-1083-42a6-AD15-2A4E7C4274D7</GuidValue>
+ <Version>1.0</Version>
+ <Abstract>SMM driver entry point library</Abstract>
+ <Description>Register driver in SMRAM and wrapper driver library constructors and entry point</Description>
+ <Copyright>Copyright (c) 2006 - 2007, Intel Corporation.</Copyright>
+ <License>All rights reserved. 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.</License>
+ <Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION 0x00000052</Specification>
+ </MsaHeader>
+ <ModuleDefinitions>
+ <SupportedArchitectures>IA32 X64</SupportedArchitectures>
+ <BinaryModule>false</BinaryModule>
+ <OutputFileBasename>DxeSmmDriverEntryPoint</OutputFileBasename>
+ </ModuleDefinitions>
+ <LibraryClassDefinitions>
+ <LibraryClass Usage="ALWAYS_PRODUCED" SupModuleList="DXE_SMM_DRIVER">
+ <Keyword>DxeSmmDriverEntryPoint</Keyword>
+ </LibraryClass>
+ <LibraryClass Usage="ALWAYS_CONSUMED">
+ <Keyword>UefiBootServicesTableLib</Keyword>
+ </LibraryClass>
+ <LibraryClass Usage="ALWAYS_CONSUMED">
+ <Keyword>DebugLib</Keyword>
+ </LibraryClass>
+ </LibraryClassDefinitions>
+ <SourceFiles>
+ <Filename>DriverEntryPoint.c</Filename>
+ </SourceFiles>
+ <PackageDependencies>
+ <Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
+ </PackageDependencies>
+ <Protocols>
+ <Protocol Usage="ALWAYS_CONSUMED">
+ <ProtocolCName>gEfiDevicePathProtocolGuid</ProtocolCName>
+ </Protocol>
+ <Protocol Usage="ALWAYS_CONSUMED">
+ <ProtocolCName>gEfiSmmBaseProtocolGuid</ProtocolCName>
+ </Protocol>
+ <Protocol Usage="ALWAYS_CONSUMED">
+ <ProtocolCName>gEfiLoadedImageProtocolGuid</ProtocolCName>
+ </Protocol>
+ </Protocols>
+ <Externs>
+ <Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
+ <Specification>EDK_RELEASE_VERSION 0x00020000</Specification>
+ </Externs>
+</ModuleSurfaceArea> \ No newline at end of file