diff options
Diffstat (limited to 'MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe')
4 files changed, 342 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverride.c b/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverride.c new file mode 100644 index 0000000..2a18913 --- /dev/null +++ b/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverride.c @@ -0,0 +1,186 @@ +/** @file
+
+Copyright (c) 2007, Intel Corporation
+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.
+
+Module Name:
+
+ PlatformDriOverride.c
+
+Abstract:
+
+
+**/
+
+
+#include "PlatformDriOverride.h"
+
+EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL gPlatformDriverOverride = {
+ GetDriver,
+ GetDriverPath,
+ DriverLoaded
+};
+
+STATIC LIST_ENTRY mMappingDataBase = INITIALIZE_LIST_HEAD_VARIABLE (mMappingDataBase);
+STATIC BOOLEAN mEnvironmentVariableRead = FALSE;
+STATIC EFI_HANDLE mCallerImageHandle;
+
+
+EFI_STATUS
+EFIAPI
+PlatformDriverOverrideEntry (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+/*++
+
+Routine Description:
+ Platform Driver Override driver entry point, install the Platform Driver Override Protocol
+
+Arguments:
+ (Standard EFI Image entry - EFI_IMAGE_ENTRY_POINT)
+
+Returns:
+ EFI_STATUS
+
+--*/
+{
+ mEnvironmentVariableRead = FALSE;
+ mCallerImageHandle = ImageHandle;
+ InitializeListHead (&mMappingDataBase);
+ return InstallPlatformDriverOverrideProtocol (&gPlatformDriverOverride);
+}
+
+
+/**
+ Retrieves the image handle of the platform override driver for a controller in the system.
+
+ @param This A pointer to the
+ EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL instance.
+ @param ControllerHandle The device handle of the controller to check if a
+ driver override exists.
+ @param DriverImageHandle On input, a pointer to the previous driver image
+ handle returned by GetDriver(). On output, a
+ pointer to the next driver image handle. Passing
+ in a NULL, will return the first driver image
+ handle for ControllerHandle.
+
+ @retval EFI_SUCCESS The driver override for ControllerHandle was
+ returned in DriverImageHandle.
+ @retval EFI_NOT_FOUND A driver override for ControllerHandle was not
+ found.
+ @retval EFI_INVALID_PARAMETER The handle specified by ControllerHandle is not a
+ valid handle. DriverImageHandle is not a handle
+ that was returned on a previous call to
+ GetDriver().
+
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+GetDriver (
+ IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL * This,
+ IN EFI_HANDLE ControllerHandle,
+ IN OUT EFI_HANDLE * DriverImageHandle
+ )
+{
+ EFI_STATUS Status;
+ //
+ // Check that ControllerHandle is a valid handle
+ //
+ if (ControllerHandle == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Read the environment variable(s) that contain the override mappings from Controller Device Path to
+ // a set of Driver Device Paths, and initialize in memory database of the overrides that map Controller
+ // Device Paths to an ordered set of Driver Device Paths and Driver Handles. This action is only performed
+ // once and finished in first call.
+ //
+ if (!mEnvironmentVariableRead) {
+ mEnvironmentVariableRead = TRUE;
+
+ Status = InitOverridesMapping (&mMappingDataBase);
+ if (Status == EFI_NOT_FOUND) {
+ InitializeListHead (&mMappingDataBase);
+ return EFI_NOT_FOUND;
+ } else if (Status == EFI_VOLUME_CORRUPTED){
+ DEBUG ((DEBUG_ERROR, "Platform Driver Override Variable is corrupt\n"));
+ //
+ // The environment variable(s) that contain the override mappings from Controller Device Path to
+ // a set of Driver Device Paths is corrupted, platform code can use LibDeleteOverridesVariables to
+ // delete all orverride variables as a policy. Here can be IBV/OEM customized.
+ //
+
+ //LibDeleteOverridesVariables();
+ InitializeListHead (&mMappingDataBase);
+ return EFI_NOT_FOUND;
+ } else if (EFI_ERROR (Status)){
+ InitializeListHead (&mMappingDataBase);
+ return EFI_NOT_FOUND;
+ }
+ }
+ //
+ // if the environment variable does not exist or the variable appears to be corrupt, just return not found
+ //
+ if (IsListEmpty (&mMappingDataBase)) {
+ return EFI_NOT_FOUND;
+ }
+
+ return GetDriverFromMapping (
+ This,
+ ControllerHandle,
+ DriverImageHandle,
+ &mMappingDataBase,
+ mCallerImageHandle
+ );
+
+}
+
+
+/**
+ For the use of the ControllerHandle parameter in the GetDriverPath() and DriverLoaded() APIs
+ makes those APIs very difficult to use, so not support.
+
+
+
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+GetDriverPath (
+ IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL * This,
+ IN EFI_HANDLE ControllerHandle,
+ IN OUT EFI_DEVICE_PATH_PROTOCOL **DriverImagePath
+ )
+{
+ return EFI_UNSUPPORTED;
+}
+
+
+/**
+ For the use of the ControllerHandle parameter in the GetDriverPath() and DriverLoaded() APIs
+ makes those APIs very difficult to use, so not support.
+
+
+
+**/
+STATIC
+EFI_STATUS
+EFIAPI
+DriverLoaded (
+ IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL * This,
+ IN EFI_HANDLE ControllerHandle,
+ IN EFI_DEVICE_PATH_PROTOCOL * DriverImagePath,
+ IN EFI_HANDLE DriverImageHandle
+ )
+{
+ return EFI_UNSUPPORTED;
+}
diff --git a/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverride.h b/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverride.h new file mode 100644 index 0000000..5a5b276 --- /dev/null +++ b/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverride.h @@ -0,0 +1,58 @@ +/** @file + +Copyright (c) 2007, Intel Corporation +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. + +Module Name: + + PlatformDriOverride.h + +Abstract: + + +**/ + +#ifndef PLATFORM_DRI_OVERRIDE_H_ +#define PLATFORM_DRI_OVERRIDE_H_ + +#include <PiDxe.h> +
+#include <Library/DebugLib.h>
+#include <Library/UefiDriverEntryPoint.h>
+#include <Library/BaseLib.h>
+#include <Library/PlatDriOverLib.h> + +STATIC +EFI_STATUS +EFIAPI +GetDriver ( + IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL * This, + IN EFI_HANDLE ControllerHandle, + IN OUT EFI_HANDLE * DriverImageHandle + ); + +STATIC +EFI_STATUS +EFIAPI +GetDriverPath ( + IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL * This, + IN EFI_HANDLE ControllerHandle, + IN OUT EFI_DEVICE_PATH_PROTOCOL **DriverImagePath + ); + +STATIC +EFI_STATUS +EFIAPI +DriverLoaded ( + IN EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL * This, + IN EFI_HANDLE ControllerHandle, + IN EFI_DEVICE_PATH_PROTOCOL * DriverImagePath, + IN EFI_HANDLE DriverImageHandle + ); +#endif diff --git a/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverrideDxe.inf b/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverrideDxe.inf new file mode 100644 index 0000000..dbc9f0e --- /dev/null +++ b/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverrideDxe.inf @@ -0,0 +1,48 @@ +#/** @file
+# Component name for module PlatformDriOverride
+#
+# FIX ME!
+# Copyright (c) 2007, Intel Corporation. All rights reserved.
+#
+# 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.
+#
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = PlatformDriOverrideDxe
+ FILE_GUID = 35034CE2-A6E5-4fb4-BABE-A0156E9B2549
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ EDK_RELEASE_VERSION = 0x00020000
+ EFI_SPECIFICATION_VERSION = 0x00020000
+
+ ENTRY_POINT = PlatformDriverOverrideEntry
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources.common]
+ PlatformDriOverride.c
+ PlatformDriOverride.h
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+
+[LibraryClasses]
+ BaseLib
+ UefiDriverEntryPoint
+ DebugLib
+ PlatDriOverLib
+
diff --git a/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverrideDxe.msa b/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverrideDxe.msa new file mode 100644 index 0000000..6e1645a --- /dev/null +++ b/MdeModulePkg/Universal/PlatformDriverOverride/PlatformDriOverrideDxe/PlatformDriOverrideDxe.msa @@ -0,0 +1,50 @@ +<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+ <MsaHeader>
+ <ModuleName>PlatformDriOverrideDxe</ModuleName>
+ <ModuleType>DXE_DRIVER</ModuleType>
+ <GuidValue>35034CE2-A6E5-4fb4-BABE-A0156E9B2549</GuidValue>
+ <Version>1.0</Version>
+ <Abstract>Component name for module PlatformDriOverride</Abstract>
+ <Description>FIX ME!</Description>
+ <Copyright>Copyright (c) 2007, Intel Corporation. All rights reserved.</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 IPF EBC</SupportedArchitectures>
+ <BinaryModule>false</BinaryModule>
+ <OutputFileBasename>PlatformDriOverrideDxe</OutputFileBasename>
+ </ModuleDefinitions>
+ <LibraryClassDefinitions>
+ <LibraryClass Usage="ALWAYS_CONSUMED">
+ <Keyword>DebugLib</Keyword>
+ </LibraryClass>
+ <LibraryClass Usage="ALWAYS_CONSUMED">
+ <Keyword>UefiDriverEntryPoint</Keyword>
+ </LibraryClass>
+ <LibraryClass Usage="ALWAYS_CONSUMED">
+ <Keyword>BaseLib</Keyword>
+ </LibraryClass>
+ </LibraryClassDefinitions>
+ <SourceFiles>
+ <Filename>PlatformDriOverride.h</Filename>
+ <Filename>PlatformDriOverride.c</Filename>
+ </SourceFiles>
+ <PackageDependencies>
+ <Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
+ <Package PackageGuid="68169ab0-d41b-4009-9060-292c253ac43d"/>
+ </PackageDependencies>
+ <Externs>
+ <Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
+ <Specification>EDK_RELEASE_VERSION 0x00020000</Specification>
+ <Extern>
+ <ModuleEntryPoint>PlatformDriverOverrideEntry</ModuleEntryPoint>
+ </Extern>
+ </Externs>
+</ModuleSurfaceArea>
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