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audk/MdeModulePkg/Universal/PlatformDriOverrideDxe/PlatDriOverrideDxe.c

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/** @file
This file also installs UEFI PLATFORM_DRIVER_OVERRIDE_PROTOCOL.
The main code offers a UI interface in device manager to let user configure
platform override protocol to override the default algorithm for matching
drivers to controllers.
The main flow:
1. It dynamicly locate all controller device path.
2. It dynamicly locate all drivers which support binding protocol.
3. It export and dynamicly update two menu to let user select the
mapping between drivers to controllers.
4. It save all the mapping info in NV variables which will be consumed
by platform override protocol driver to publish the platform override protocol.
Copyright (c) 2007 - 2014, 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 "InternalPlatDriOverrideDxe.h"
#include "PlatOverMngr.h"
#define EFI_CALLBACK_INFO_SIGNATURE SIGNATURE_32 ('C', 'l', 'b', 'k')
#define EFI_CALLBACK_INFO_FROM_THIS(a) CR (a, EFI_CALLBACK_INFO, ConfigAccess, EFI_CALLBACK_INFO_SIGNATURE)
typedef struct {
UINTN Signature;
EFI_HANDLE DriverHandle;
EFI_HII_HANDLE RegisteredHandle;
PLAT_OVER_MNGR_DATA FakeNvData;
EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;
EFI_HII_CONFIG_ACCESS_PROTOCOL ConfigAccess;
EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL PlatformDriverOverride;
} EFI_CALLBACK_INFO;
#pragma pack(1)
///
/// HII specific Vendor Device Path definition.
///
typedef struct {
VENDOR_DEVICE_PATH VendorDevicePath;
EFI_DEVICE_PATH_PROTOCOL End;
} HII_VENDOR_DEVICE_PATH;
#pragma pack()
//
// uni string and Vfr Binary data.
//
extern UINT8 VfrBin[];
extern UINT8 PlatDriOverrideDxeStrings[];
//
// module global data
//
CHAR16 mVariableName[] = L"Data";
LIST_ENTRY mMappingDataBase = INITIALIZE_LIST_HEAD_VARIABLE (mMappingDataBase);
BOOLEAN mEnvironmentVariableRead = FALSE;
EFI_HANDLE mCallerImageHandle = NULL;
EFI_HANDLE *mDevicePathHandleBuffer;
EFI_HANDLE *mDriverImageHandleBuffer;
INTN mSelectedCtrIndex;
EFI_STRING_ID *mControllerToken;
UINTN mDriverImageHandleCount;
EFI_STRING_ID *mDriverImageToken;
EFI_DEVICE_PATH_PROTOCOL **mControllerDevicePathProtocol;
UINTN mSelectedDriverImageNum;
UINTN mLastSavedDriverImageNum;
UINT16 mCurrentPage;
EFI_CALLBACK_INFO *mCallbackInfo;
BOOLEAN *mDriSelection;
UINTN mMaxDeviceCount;
HII_VENDOR_DEVICE_PATH mHiiVendorDevicePath = {
{
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
{
(UINT8) (sizeof (VENDOR_DEVICE_PATH)),
(UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
}
},
PLAT_OVER_MNGR_GUID
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
(UINT8) (END_DEVICE_PATH_LENGTH),
(UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
}
}
};
/**
Converting a given device to an unicode string.
@param DevPath Given device path instance
@return Converted string from given device path.
@retval L"?" Converting failed.
**/
CHAR16 *
DevicePathToStr (
IN EFI_DEVICE_PATH_PROTOCOL *DevPath
)
{
CHAR16 *Text;
Text = ConvertDevicePathToText (
DevPath,
FALSE,
TRUE
);
if (Text == NULL) {
Text = AllocateCopyPool (sizeof (L"?"), L"?");
ASSERT (Text != NULL);
}
return Text;
}
/**
Worker function to get the driver name by ComponentName or ComponentName2 protocol
according to the driver binding handle.
@param DriverBindingHandle The Handle of DriverBinding.
@param ProtocolGuid The pointer to Component Name (2) protocol GUID.
@param VariableName The name of the RFC 4646 or ISO 639-2 language variable.
@retval !NULL Pointer into the image name if the image name is found,
@retval NULL Pointer to NULL if the image name is not found.
**/
CHAR16 *
GetComponentNameWorker (
IN EFI_HANDLE DriverBindingHandle,
IN EFI_GUID *ProtocolGuid,
IN CONST CHAR16 *VariableName
)
{
EFI_STATUS Status;
EFI_COMPONENT_NAME_PROTOCOL *ComponentName;
CHAR16 *DriverName;
CHAR8 *Language;
CHAR8 *BestLanguage;
Status = gBS->OpenProtocol (
DriverBindingHandle,
ProtocolGuid,
(VOID *) &ComponentName,
NULL,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return NULL;
}
//
// Find the best matching language.
//
GetEfiGlobalVariable2 (VariableName, (VOID**)&Language, NULL);
BestLanguage = GetBestLanguage (
ComponentName->SupportedLanguages,
(BOOLEAN) (ProtocolGuid == &gEfiComponentNameProtocolGuid),
Language,
NULL
);
DriverName = NULL;
if (BestLanguage != NULL) {
ComponentName->GetDriverName (
ComponentName,
BestLanguage,
&DriverName
);
FreePool (BestLanguage);
}
if (Language != NULL) {
FreePool (Language);
}
return DriverName;
}
/**
Get the driver name by ComponentName or ComponentName2 protocol
according to the driver binding handle
@param DriverBindingHandle The Handle of DriverBinding.
@retval !NULL Pointer into the image name if the image name is found,
@retval NULL Pointer to NULL if the image name is not found.
**/
CHAR16 *
GetComponentName (
IN EFI_HANDLE DriverBindingHandle
)
{
CHAR16 *DriverName;
//
// Try RFC 4646 Component Name 2 protocol first.
//
DriverName = GetComponentNameWorker (DriverBindingHandle, &gEfiComponentName2ProtocolGuid, L"PlatformLang");
if (DriverName == NULL) {
//
// If we can not get driver name from Component Name 2 protocol, we can try ISO 639-2 Component Name protocol.
//
DriverName = GetComponentNameWorker (DriverBindingHandle, &gEfiComponentNameProtocolGuid, L"Lang");
}
return DriverName;
}
/**
Get the image name from EFI UI section.
Get FV protocol by its loaded image protocol to abstract EFI UI section.
@param Image Pointer to the loaded image protocol
@retval !NULL Pointer to the image name if the image name is found,
@retval NULL NULL if the image name is not found.
**/
CHAR16 *
GetImageName (
IN EFI_LOADED_IMAGE_PROTOCOL *Image
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *DevPathNode;
EFI_DEVICE_PATH_PROTOCOL *AlignedDevPathNode;
MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvFilePath;
VOID *Buffer;
UINTN BufferSize;
UINT32 AuthenticationStatus;
EFI_GUID *NameGuid;
EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv2;
Fv2 = NULL;
Buffer = NULL;
BufferSize = 0;
if (Image->FilePath == NULL) {
return NULL;
}
DevPathNode = Image->FilePath;
while (!IsDevicePathEnd (DevPathNode)) {
//
// Make sure device path node is aligned when accessing it's FV Name Guid field.
//
AlignedDevPathNode = AllocateCopyPool (DevicePathNodeLength(DevPathNode), DevPathNode);
//
// Find the Fv File path
//
NameGuid = EfiGetNameGuidFromFwVolDevicePathNode ((MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *)AlignedDevPathNode);
if (NameGuid != NULL) {
FvFilePath = (MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *) AlignedDevPathNode;
Status = gBS->HandleProtocol (
Image->DeviceHandle,
&gEfiFirmwareVolume2ProtocolGuid,
(VOID **) &Fv2
);
//
// Locate Image EFI UI section to get the image name.
//
if (!EFI_ERROR (Status)) {
Status = Fv2->ReadSection (
Fv2,
&FvFilePath->FvFileName,
EFI_SECTION_USER_INTERFACE,
0,
&Buffer,
&BufferSize,
&AuthenticationStatus
);
if (!EFI_ERROR (Status)) {
FreePool (AlignedDevPathNode);
break;
}
Buffer = NULL;
}
}
FreePool (AlignedDevPathNode);
//
// Next device path node
//
DevPathNode = NextDevicePathNode (DevPathNode);
}
return Buffer;
}
/**
Prepare the first page to let user select the device controller which need to
add mapping drivers if user select 'Refresh' in first page.
During first page, user will see all currnet controller device path in system,
select any device path will go to second page to select its overrides drivers.
@param Private Pointer to EFI_CALLBACK_INFO.
@param KeyValue The callback key value of device controller item in first page.
@param FakeNvData Pointer to PLAT_OVER_MNGR_DATA.
@retval EFI_SUCCESS Always returned.
**/
EFI_STATUS
UpdateDeviceSelectPage (
IN EFI_CALLBACK_INFO *Private,
IN UINT16 KeyValue,
IN PLAT_OVER_MNGR_DATA *FakeNvData
)
{
EFI_STATUS Status;
UINTN Index;
UINTN DevicePathHandleCount;
CHAR16 *NewString;
EFI_STRING_ID NewStringToken;
CHAR16 *ControllerName;
EFI_DEVICE_PATH_PROTOCOL *ControllerDevicePath;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *BusSpecificDriverOverride;
UINTN Len;
VOID *StartOpCodeHandle;
VOID *EndOpCodeHandle;
EFI_IFR_GUID_LABEL *StartLabel;
EFI_IFR_GUID_LABEL *EndLabel;
//
// Set current page form ID.
//
mCurrentPage = FORM_ID_DEVICE;
//
// Initial the mapping database in memory
//
FreeMappingDatabase (&mMappingDataBase);
InitOverridesMapping (&mMappingDataBase);
//
// Init OpCode Handle
//
StartOpCodeHandle = HiiAllocateOpCodeHandle ();
ASSERT (StartOpCodeHandle != NULL);
EndOpCodeHandle = HiiAllocateOpCodeHandle ();
ASSERT (EndOpCodeHandle != NULL);
//
// Create Hii Extend Label OpCode as the start opcode
//
StartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (StartOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
StartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
StartLabel->Number = FORM_ID_DEVICE;
//
// Create Hii Extend Label OpCode as the end opcode
//
EndLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (EndOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
EndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
EndLabel->Number = LABEL_END;
//
// Clear first page form
//
HiiUpdateForm (
Private->RegisteredHandle,
&gPlatformOverridesManagerGuid,
FORM_ID_DEVICE,
StartOpCodeHandle, // Label FORM_ID_DEVICE
EndOpCodeHandle // LABEL_END
);
//
// When user enter the page at first time, the 'first refresh' string is given to notify user to refresh all the drivers,
// then the 'first refresh' string will be replaced by the 'refresh' string, and the two strings content are same after the replacement
//
NewStringToken = STRING_TOKEN (STR_FIRST_REFRESH);
NewString = HiiGetString (Private->RegisteredHandle, STRING_TOKEN (STR_REFRESH), NULL);
ASSERT (NewString != NULL);
if (HiiSetString (Private->RegisteredHandle, NewStringToken, NewString, NULL) == 0) {
ASSERT (FALSE);
}
FreePool (NewString);
NewStringToken = STRING_TOKEN (STR_FIRST_REFRESH_HELP);
NewString = HiiGetString (Private->RegisteredHandle, STRING_TOKEN (STR_REFRESH_HELP), NULL);
ASSERT (NewString != NULL);
if (HiiSetString (Private->RegisteredHandle, NewStringToken, NewString, NULL) == 0) {
ASSERT (FALSE);
}
FreePool (NewString);
//
// created needed controller device item in first page
//
DevicePathHandleCount = 0;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiDevicePathProtocolGuid,
NULL,
&DevicePathHandleCount,
&mDevicePathHandleBuffer
);
if (EFI_ERROR (Status) || (DevicePathHandleCount == 0)) {
return EFI_SUCCESS;
}
mMaxDeviceCount = DevicePathHandleCount;
mControllerDevicePathProtocol = AllocateZeroPool (DevicePathHandleCount * sizeof (EFI_DEVICE_PATH_PROTOCOL *));
ASSERT (mControllerDevicePathProtocol != NULL);
mControllerToken = AllocateZeroPool (DevicePathHandleCount * sizeof (EFI_STRING_ID));
ASSERT (mControllerToken != NULL);
for (Index = 0; Index < DevicePathHandleCount; Index++) {
if (FakeNvData->PciDeviceFilter == 0x01) {
//
// Only care PCI device which contain efi driver in its option rom.
//
//
// Check whether it is a pci device
//
ControllerDevicePath = NULL;
Status = gBS->OpenProtocol (
mDevicePathHandleBuffer[Index],
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
NULL,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
continue;
}
//
// Check whether it contain efi driver in its option rom
//
Status = gBS->HandleProtocol(
mDevicePathHandleBuffer[Index],
&gEfiBusSpecificDriverOverrideProtocolGuid,
(VOID **) &BusSpecificDriverOverride
);
if (EFI_ERROR (Status) || BusSpecificDriverOverride == NULL) {
continue;
}
}
ControllerDevicePath = NULL;
Status = gBS->OpenProtocol (
mDevicePathHandleBuffer[Index],
&gEfiDevicePathProtocolGuid,
(VOID **) &ControllerDevicePath,
NULL,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
ASSERT_EFI_ERROR (Status);
//
// Save the device path protocol interface
//
mControllerDevicePathProtocol[Index] = ControllerDevicePath;
//
// Get the driver name
//
ControllerName = DevicePathToStr (ControllerDevicePath);
//
// Export the driver name string and create item in set options page
//
Len = StrSize (ControllerName);
NewString = AllocateZeroPool (Len + StrSize (L"--"));
ASSERT (NewString != NULL);
if (EFI_ERROR (CheckMapping (ControllerDevicePath,NULL, &mMappingDataBase, NULL, NULL))) {
StrCat (NewString, L"--");
} else {
StrCat (NewString, L"**");
}
StrCat (NewString, ControllerName);
NewStringToken = HiiSetString (Private->RegisteredHandle, mControllerToken[Index], NewString, NULL);
ASSERT (NewStringToken != 0);
FreePool (NewString);
//
// Save the device path string toke for next access use
//
mControllerToken[Index] = NewStringToken;
HiiCreateGotoOpCode (
StartOpCodeHandle,
FORM_ID_DRIVER,
NewStringToken,
STRING_TOKEN (STR_GOTO_HELP_DRIVER),
EFI_IFR_FLAG_CALLBACK,
(UINT16) (Index + KEY_VALUE_DEVICE_OFFSET)
);
}
//
// Update first page form
//
HiiUpdateForm (
Private->RegisteredHandle,
&gPlatformOverridesManagerGuid,
FORM_ID_DEVICE,
StartOpCodeHandle, // Label FORM_ID_DEVICE
EndOpCodeHandle // LABEL_END
);
HiiFreeOpCodeHandle (StartOpCodeHandle);
HiiFreeOpCodeHandle (EndOpCodeHandle);
return EFI_SUCCESS;
}
/**
Get the first Driver Binding handle which has the specific image handle.
@param ImageHandle The Image handle
@return Handle to Driver binding
@retval NULL The paramter is not valid or the driver binding handle is not found.
**/
EFI_HANDLE
GetDriverBindingHandleFromImageHandle (
IN EFI_HANDLE ImageHandle
)
{
EFI_STATUS Status;
UINTN Index;
UINTN DriverBindingHandleCount;
EFI_HANDLE *DriverBindingHandleBuffer;
EFI_DRIVER_BINDING_PROTOCOL *DriverBindingInterface;
EFI_HANDLE DriverBindingHandle;
DriverBindingHandle = NULL;
if (ImageHandle == NULL) {
return NULL;
}
//
// Get all drivers which support driver binding protocol
//
DriverBindingHandleCount = 0;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiDriverBindingProtocolGuid,
NULL,
&DriverBindingHandleCount,
&DriverBindingHandleBuffer
);
if (EFI_ERROR (Status) || (DriverBindingHandleCount == 0)) {
return NULL;
}
//
// Get the first Driver Binding handle which has the specific image handle.
//
for (Index = 0; Index < DriverBindingHandleCount; Index++) {
DriverBindingInterface = NULL;
Status = gBS->OpenProtocol (
DriverBindingHandleBuffer[Index],
&gEfiDriverBindingProtocolGuid,
(VOID **) &DriverBindingInterface,
NULL,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
continue;
}
if (DriverBindingInterface->ImageHandle == ImageHandle) {
DriverBindingHandle = DriverBindingHandleBuffer[Index];
break;
}
}
FreePool (DriverBindingHandleBuffer);
return DriverBindingHandle;
}
/**
Prepare to let user select the drivers which need mapping with the device controller
selected in first page.
@param Private Pointer to EFI_CALLBACK_INFO.
@param KeyValue The callback key value of device controller item in first page.
KeyValue is larger than or equal to KEY_VALUE_DEVICE_OFFSET.
@param FakeNvData Pointer to PLAT_OVER_MNGR_DATA.
@retval EFI_SUCCESS Always returned.
**/
EFI_STATUS
UpdateBindingDriverSelectPage (
IN EFI_CALLBACK_INFO *Private,
IN UINT16 KeyValue,
IN PLAT_OVER_MNGR_DATA *FakeNvData
)
{
EFI_STATUS Status;
UINTN Index;
CHAR16 *NewString;
EFI_STRING_ID NewStringToken;
EFI_STRING_ID NewStringHelpToken;
UINTN DriverImageHandleCount;
EFI_LOADED_IMAGE_PROTOCOL *LoadedImage;
CHAR16 *DriverName;
BOOLEAN FreeDriverName;
EFI_DEVICE_PATH_PROTOCOL *LoadedImageDevicePath;
EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL *BusSpecificDriverOverride;
EFI_HANDLE DriverBindingHandle;
VOID *StartOpCodeHandle;
VOID *EndOpCodeHandle;
EFI_IFR_GUID_LABEL *StartLabel;
EFI_IFR_GUID_LABEL *EndLabel;
EFI_LOADED_IMAGE_PROTOCOL **DriverImageProtocol;
EFI_STRING_ID *DriverImageFilePathToken;
UINT8 CheckFlags;
//
// If user select a controller item in the first page the following code will be run.
// During second page, user will see all currnet driver bind protocol driver, the driver name and its device path will be shown
//
//First acquire the list of Loaded Image Protocols, and then when want the name of the driver, look up all the Driver Binding Protocols
// and find the first one whose ImageHandle field matches the image handle of the Loaded Image Protocol.
// then use the Component Name Protocol on the same handle as the first matching Driver Binding Protocol to look up the name of the driver.
//
mCurrentPage = FORM_ID_DRIVER;
//
// Switch the item callback key value to its NO. in mDevicePathHandleBuffer
//
mSelectedCtrIndex = KeyValue - KEY_VALUE_DEVICE_OFFSET;
ASSERT (mSelectedCtrIndex >= 0 && mSelectedCtrIndex < MAX_CHOICE_NUM);
mLastSavedDriverImageNum = 0;
//
// Init OpCode Handle
//
StartOpCodeHandle = HiiAllocateOpCodeHandle ();
ASSERT (StartOpCodeHandle != NULL);
EndOpCodeHandle = HiiAllocateOpCodeHandle ();
ASSERT (EndOpCodeHandle != NULL);
//
// Create Hii Extend Label OpCode as the start opcode
//
StartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (StartOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
StartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
StartLabel->Number = FORM_ID_DRIVER;
//
// Create Hii Extend Label OpCode as the end opcode
//
EndLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (EndOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
EndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
EndLabel->Number = LABEL_END;
//
// Clear second page form
//
HiiUpdateForm (
Private->RegisteredHandle,
&gPlatformOverridesManagerGuid,
FORM_ID_DRIVER,
StartOpCodeHandle,
EndOpCodeHandle
);
//
// Show all driver which support loaded image protocol in second page
//
DriverImageHandleCount = 0;
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiLoadedImageProtocolGuid,
NULL,
&DriverImageHandleCount,
&mDriverImageHandleBuffer
);
if (EFI_ERROR (Status) || (DriverImageHandleCount == 0)) {
return EFI_NOT_FOUND;
}
mDriverImageToken = AllocateZeroPool (DriverImageHandleCount * sizeof (EFI_STRING_ID));
ASSERT (mDriverImageToken != NULL);
mDriSelection = AllocateZeroPool (DriverImageHandleCount * sizeof (BOOLEAN));
ASSERT (mDriSelection != NULL);
DriverImageProtocol = AllocateZeroPool (DriverImageHandleCount * sizeof (EFI_LOADED_IMAGE_PROTOCOL *));
ASSERT (DriverImageProtocol != NULL);
DriverImageFilePathToken = AllocateZeroPool (DriverImageHandleCount * sizeof (EFI_STRING_ID));
ASSERT (DriverImageFilePathToken != NULL);
mDriverImageHandleCount = DriverImageHandleCount;
for (Index = 0; Index < DriverImageHandleCount; Index++) {
//
// Step1: Get the driver image total file path for help string and the driver name.
//
//
// Find driver's Loaded Image protocol
//
LoadedImage =NULL;
Status = gBS->OpenProtocol (
mDriverImageHandleBuffer[Index],
&gEfiLoadedImageProtocolGuid,
(VOID **) &LoadedImage,
NULL,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
mDriSelection[Index] = FALSE;
continue;
}
DriverImageProtocol[Index] = LoadedImage;
//
// Find its related driver binding protocol
//
DriverBindingHandle = GetDriverBindingHandleFromImageHandle (mDriverImageHandleBuffer[Index]);
if (DriverBindingHandle == NULL) {
mDriSelection[Index] = FALSE;
continue;
}
//
// Get the EFI Loaded Image Device Path Protocol
//
LoadedImageDevicePath = NULL;
Status = gBS->HandleProtocol (
mDriverImageHandleBuffer[Index],
&gEfiLoadedImageDevicePathProtocolGuid,
(VOID **) &LoadedImageDevicePath
);
if (LoadedImageDevicePath == NULL) {
mDriSelection[Index] = FALSE;
continue;
}
if (FakeNvData->PciDeviceFilter == 0x01) {
//
// only care the driver which is in a Pci device option rom,
// and the driver's LoadedImage->DeviceHandle must point to a pci device which has efi option rom
//
if (!EFI_ERROR (Status)) {
Status = gBS->HandleProtocol(
LoadedImage->DeviceHandle,
&gEfiBusSpecificDriverOverrideProtocolGuid,
(VOID **) &BusSpecificDriverOverride
);
if (EFI_ERROR (Status) || BusSpecificDriverOverride == NULL) {
mDriSelection[Index] = FALSE;
continue;
}
} else {
mDriSelection[Index] = FALSE;
continue;
}
}
//
// For driver name, try to get its component name, if fail, get its image name,
// if also fail, give a default name.
//
FreeDriverName = FALSE;
DriverName = GetComponentName (DriverBindingHandle);
if (DriverName == NULL) {
//
// get its image name
//
DriverName = GetImageName (LoadedImage);
}
if (DriverName == NULL) {
//
// give a default name
//
DriverName = HiiGetString (Private->RegisteredHandle, STRING_TOKEN (STR_DRIVER_DEFAULT_NAME), NULL);
ASSERT (DriverName != NULL);
FreeDriverName = TRUE; // the DriverName string need to free pool
}
//
// Step2 Export the driver name string and create check box item in second page
//
//
// First create the driver image name
//
NewString = AllocateZeroPool (StrSize (DriverName));
ASSERT (NewString != NULL);
if (EFI_ERROR (CheckMapping (mControllerDevicePathProtocol[mSelectedCtrIndex], LoadedImageDevicePath, &mMappingDataBase, NULL, NULL))) {
mDriSelection[Index] = FALSE;
} else {
mDriSelection[Index] = TRUE;
mLastSavedDriverImageNum++;
}
StrCat (NewString, DriverName);
NewStringToken = HiiSetString (Private->RegisteredHandle, mDriverImageToken[Index], NewString, NULL);
ASSERT (NewStringToken != 0);
mDriverImageToken[Index] = NewStringToken;
FreePool (NewString);
if (FreeDriverName) {
FreePool (DriverName);
}
//
// Second create the driver image device path as item help string
//
DriverName = DevicePathToStr (LoadedImageDevicePath);
NewString = AllocateZeroPool (StrSize (DriverName));
ASSERT (NewString != NULL);
StrCat (NewString, DriverName);
NewStringHelpToken = HiiSetString (Private->RegisteredHandle, DriverImageFilePathToken[Index], NewString, NULL);
ASSERT (NewStringHelpToken != 0);
DriverImageFilePathToken[Index] = NewStringHelpToken;
FreePool (NewString);
FreePool (DriverName);
CheckFlags = 0;
if (mDriSelection[Index]) {
CheckFlags |= EFI_IFR_CHECKBOX_DEFAULT;
}
HiiCreateCheckBoxOpCode (
StartOpCodeHandle,
(UINT16) (KEY_VALUE_DRIVER_OFFSET + Index),
0,
0,
NewStringToken,
NewStringHelpToken,
EFI_IFR_FLAG_CALLBACK,
CheckFlags,
NULL
);
}
//
// Update second page form
//
HiiUpdateForm (
Private->RegisteredHandle,
&gPlatformOverridesManagerGuid,
FORM_ID_DRIVER,
StartOpCodeHandle, // Label FORM_ID_DRIVER
EndOpCodeHandle // LABEL_END
);
HiiFreeOpCodeHandle (StartOpCodeHandle);
HiiFreeOpCodeHandle (EndOpCodeHandle);
if (DriverImageProtocol != NULL) {
FreePool (DriverImageProtocol);
}
if (DriverImageFilePathToken != NULL) {
FreePool (DriverImageFilePathToken);
}
return EFI_SUCCESS;
}
/**
Prepare to let user select the priority order of the drivers which are
selected in second page.
@param Private Pointer to EFI_CALLBACK_INFO.
@param KeyValue The callback key value of device controller item in first page.
@param FakeNvData Pointer to PLAT_OVER_MNGR_DATA.
@retval EFI_SUCCESS Always returned.
**/
EFI_STATUS
UpdatePrioritySelectPage (
IN EFI_CALLBACK_INFO *Private,
IN UINT16 KeyValue,
IN PLAT_OVER_MNGR_DATA *FakeNvData
)
{
UINTN Index;
EFI_DEVICE_PATH_PROTOCOL *LoadedImageDevicePath;
UINTN SelectedDriverImageNum;
UINT32 DriverImageNO;
UINTN MinNO;
UINTN Index1;
UINTN TempNO[100];
UINTN OrderNO[100];
VOID *StartOpCodeHandle;
VOID *EndOpCodeHandle;
VOID *OptionsOpCodeHandle;
EFI_IFR_GUID_LABEL *StartLabel;
EFI_IFR_GUID_LABEL *EndLabel;
//
// Following code will be run if user select 'order ... priority' item in second page
// Prepare third page. In third page, user will order the drivers priority which are selected in second page
//
mCurrentPage = FORM_ID_ORDER;
//
// Init OpCode Handle
//
StartOpCodeHandle = HiiAllocateOpCodeHandle ();
ASSERT (StartOpCodeHandle != NULL);
EndOpCodeHandle = HiiAllocateOpCodeHandle ();
ASSERT (EndOpCodeHandle != NULL);
//
// Create Hii Extend Label OpCode as the start opcode
//
StartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (StartOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
StartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
StartLabel->Number = FORM_ID_ORDER;
//
// Create Hii Extend Label OpCode as the end opcode
//
EndLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (EndOpCodeHandle, &gEfiIfrTianoGuid, NULL, sizeof (EFI_IFR_GUID_LABEL));
EndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
EndLabel->Number = LABEL_END;
//
// Clear third page form
//
HiiUpdateForm (
Private->RegisteredHandle,
&gPlatformOverridesManagerGuid,
FORM_ID_ORDER,
StartOpCodeHandle,
EndOpCodeHandle
);
//
// Check how many drivers have been selected
//
SelectedDriverImageNum = 0;
for (Index = 0; Index < mDriverImageHandleCount; Index++) {
if (mDriSelection[Index]) {
SelectedDriverImageNum ++;
}
}
mSelectedDriverImageNum = SelectedDriverImageNum;
if (SelectedDriverImageNum == 0) {
return EFI_SUCCESS;
}
OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();
ASSERT (OptionsOpCodeHandle != NULL);
//
// Create order list for those selected drivers
//
SelectedDriverImageNum = 0;
for (Index = 0; Index < mDriverImageHandleCount; Index++) {
if (mDriSelection[Index]) {
//
// Use the NO. in driver binding buffer as value, will use it later
//
HiiCreateOneOfOptionOpCode (
OptionsOpCodeHandle,
mDriverImageToken[Index],
0,
EFI_IFR_NUMERIC_SIZE_1,
Index + 1
);
//
// Get the EFI Loaded Image Device Path Protocol
//
LoadedImageDevicePath = NULL;
gBS->HandleProtocol (
mDriverImageHandleBuffer[Index],
&gEfiLoadedImageDevicePathProtocolGuid,
(VOID **) &LoadedImageDevicePath
);
ASSERT (LoadedImageDevicePath != NULL);
//
// Check the driver DriverImage's order number in mapping database
//
DriverImageNO = 0;
CheckMapping (
mControllerDevicePathProtocol[mSelectedCtrIndex],
LoadedImageDevicePath,
&mMappingDataBase,
NULL,
&DriverImageNO
);
if (DriverImageNO == 0) {
DriverImageNO = (UINT32) mLastSavedDriverImageNum + 1;
mLastSavedDriverImageNum++;
}
TempNO[SelectedDriverImageNum] = DriverImageNO;
OrderNO[SelectedDriverImageNum] = Index + 1;
SelectedDriverImageNum ++;
}
}
ASSERT (SelectedDriverImageNum == mSelectedDriverImageNum);
//
// NvRamMap Must be clear firstly
//
ZeroMem (FakeNvData->DriOrder, sizeof (FakeNvData->DriOrder));
//
// Order the selected drivers according to the info already in mapping database
// the less order number in mapping database the less order number in NvRamMap
//
for (Index=0; Index < SelectedDriverImageNum; Index++) {
//
// Find the minimal order number in TempNO array, its index in TempNO is same as IfrOptionList array
//
MinNO = 0;
for (Index1=0; Index1 < SelectedDriverImageNum; Index1++) {
if (TempNO[Index1] < TempNO[MinNO]) {
MinNO = Index1;
}
}
//
// the IfrOptionList[MinNO].Value = the driver NO. in driver binding buffer
//
FakeNvData->DriOrder[Index] = (UINT8) OrderNO[MinNO];
TempNO[MinNO] = MAX_CHOICE_NUM + 1;
}
//
// Create Order List OpCode
//
HiiCreateOrderedListOpCode (
StartOpCodeHandle,
(UINT16) DRIVER_ORDER_QUESTION_ID,
VARSTORE_ID_PLAT_OVER_MNGR,
(UINT16) DRIVER_ORDER_VAR_OFFSET,
mControllerToken[mSelectedCtrIndex],
mControllerToken[mSelectedCtrIndex],
EFI_IFR_FLAG_RESET_REQUIRED,
0,
EFI_IFR_NUMERIC_SIZE_1,
(UINT8) MAX_CHOICE_NUM,
OptionsOpCodeHandle,
NULL
);
//
// Update third page form
//
HiiUpdateForm (
Private->RegisteredHandle,
&gPlatformOverridesManagerGuid,
FORM_ID_ORDER,
StartOpCodeHandle, // Label FORM_ID_ORDER
EndOpCodeHandle // LABEL_END
);
HiiFreeOpCodeHandle (StartOpCodeHandle);
HiiFreeOpCodeHandle (EndOpCodeHandle);
HiiFreeOpCodeHandle (OptionsOpCodeHandle);
return EFI_SUCCESS;
}
/**
Save the save the mapping database to NV variable.
@param Private Pointer to EFI_CALLBACK_INFO.
@param KeyValue The callback key value of device controller item in first page.
@param FakeNvData Pointer to PLAT_OVER_MNGR_DATA.
@retval EFI_SUCCESS Always returned.
**/
EFI_STATUS
CommitChanges (
IN EFI_CALLBACK_INFO *Private,
IN UINT16 KeyValue,
IN PLAT_OVER_MNGR_DATA *FakeNvData
)
{
EFI_STATUS Status;
UINTN Index;
UINTN SelectedDriverImageNum;
EFI_DEVICE_PATH_PROTOCOL *LoadedImageDevicePath;
//
// Following code will be run if user select 'commint changes' in third page
// user enter 'Commit Changes' to save the mapping database
//
DeleteDriverImage (mControllerDevicePathProtocol[mSelectedCtrIndex], NULL, &mMappingDataBase);
for (SelectedDriverImageNum = 0; SelectedDriverImageNum < mSelectedDriverImageNum; SelectedDriverImageNum++) {
//
// DriOrder[SelectedDriverImageNum] = the driver NO. in driver binding buffer
//
Index = FakeNvData->DriOrder[SelectedDriverImageNum] - 1;
//
// Get the EFI Loaded Image Device Path Protocol
//
LoadedImageDevicePath = NULL;
Status = gBS->HandleProtocol (
mDriverImageHandleBuffer[Index],
&gEfiLoadedImageDevicePathProtocolGuid,
(VOID **) &LoadedImageDevicePath
);
ASSERT (LoadedImageDevicePath != NULL);
InsertDriverImage (
mControllerDevicePathProtocol[mSelectedCtrIndex],
LoadedImageDevicePath,
&mMappingDataBase,
(UINT32)SelectedDriverImageNum + 1
);
}
Status = SaveOverridesMapping (&mMappingDataBase);
return Status;
}
/**
This function allows a caller to extract the current configuration for one
or more named elements from the target driver.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Request A null-terminated Unicode string in <ConfigRequest> format.
@param Progress On return, points to a character in the Request string.
Points to the string's null terminator if request was successful.
Points to the most recent '&' before the first failing name/value
pair (or the beginning of the string if the failure is in the
first name/value pair) if the request was not successful.
@param Results A null-terminated Unicode string in <ConfigAltResp> format which
has all values filled in for the names in the Request string.
String to be allocated by the called function.
@retval EFI_SUCCESS The Results is filled with the requested values.
@retval EFI_OUT_OF_RESOURCES Not enough memory to store the results.
@retval EFI_INVALID_PARAMETER Request is illegal syntax, or unknown name.
@retval EFI_NOT_FOUND Routing data doesn't match any storage in this driver.
**/
EFI_STATUS
EFIAPI
PlatOverMngrExtractConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Request,
OUT EFI_STRING *Progress,
OUT EFI_STRING *Results
)
{
EFI_STATUS Status;
EFI_CALLBACK_INFO *Private;
EFI_HII_CONFIG_ROUTING_PROTOCOL *HiiConfigRouting;
EFI_STRING ConfigRequestHdr;
EFI_STRING ConfigRequest;
BOOLEAN AllocatedRequest;
UINTN Size;
UINTN BufferSize;
if (Progress == NULL || Results == NULL) {
return EFI_INVALID_PARAMETER;
}
*Progress = Request;
if ((Request != NULL) && !HiiIsConfigHdrMatch (Request, &gPlatformOverridesManagerGuid, mVariableName)) {
return EFI_NOT_FOUND;
}
ConfigRequestHdr = NULL;
ConfigRequest = NULL;
Size = 0;
AllocatedRequest = FALSE;
Private = EFI_CALLBACK_INFO_FROM_THIS (This);
HiiConfigRouting = Private->HiiConfigRouting;
ConfigRequest = Request;
if ((Request == NULL) || (StrStr (Request, L"OFFSET") == NULL)) {
//
// Request has no request element, construct full request string.
// Allocate and fill a buffer large enough to hold the <ConfigHdr> template
// followed by "&OFFSET=0&WIDTH=WWWWWWWWWWWWWWWW" followed by a Null-terminator
//
ConfigRequestHdr = HiiConstructConfigHdr (&gPlatformOverridesManagerGuid, mVariableName, Private->DriverHandle);
Size = (StrLen (ConfigRequestHdr) + 32 + 1) * sizeof (CHAR16);
ConfigRequest = AllocateZeroPool (Size);
ASSERT (ConfigRequest != NULL);
AllocatedRequest = TRUE;
BufferSize = sizeof (PLAT_OVER_MNGR_DATA);
UnicodeSPrint (ConfigRequest, Size, L"%s&OFFSET=0&WIDTH=%016LX", ConfigRequestHdr, (UINT64)BufferSize);
FreePool (ConfigRequestHdr);
}
//
// Convert buffer data to <ConfigResp> by helper function BlockToConfig()
//
Status = HiiConfigRouting->BlockToConfig (
HiiConfigRouting,
ConfigRequest,
(UINT8 *) &Private->FakeNvData,
sizeof (PLAT_OVER_MNGR_DATA),
Results,
Progress
);
//
// Free the allocated config request string.
//
if (AllocatedRequest) {
FreePool (ConfigRequest);
ConfigRequest = NULL;
}
//
// Set Progress string to the original request string.
//
if (Request == NULL) {
*Progress = NULL;
} else if (StrStr (Request, L"OFFSET") == NULL) {
*Progress = Request + StrLen (Request);
}
return Status;
}
/**
This function processes the results of changes in configuration.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Configuration A null-terminated Unicode string in <ConfigRequest> format.
@param Progress A pointer to a string filled in with the offset of the most
recent '&' before the first failing name/value pair (or the
beginning of the string if the failure is in the first
name/value pair) or the terminating NULL if all was successful.
@retval EFI_SUCCESS The Results is processed successfully.
@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_NOT_FOUND Routing data doesn't match any storage in this driver.
**/
EFI_STATUS
EFIAPI
PlatOverMngrRouteConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Configuration,
OUT EFI_STRING *Progress
)
{
EFI_CALLBACK_INFO *Private;
UINT16 KeyValue;
PLAT_OVER_MNGR_DATA *FakeNvData;
EFI_STATUS Status;
if (Configuration == NULL || Progress == NULL) {
return EFI_INVALID_PARAMETER;
}
*Progress = Configuration;
if (!HiiIsConfigHdrMatch (Configuration, &gPlatformOverridesManagerGuid, mVariableName)) {
return EFI_NOT_FOUND;
}
*Progress = Configuration + StrLen (Configuration);
Private = EFI_CALLBACK_INFO_FROM_THIS (This);
FakeNvData = &Private->FakeNvData;
if (!HiiGetBrowserData (&gPlatformOverridesManagerGuid, mVariableName, sizeof (PLAT_OVER_MNGR_DATA), (UINT8 *) FakeNvData)) {
//
// FakeNvData can't be got from SetupBrowser, which doesn't need to be set.
//
return EFI_SUCCESS;
}
Status = EFI_SUCCESS;
if (mCurrentPage == FORM_ID_ORDER) {
KeyValue = KEY_VALUE_ORDER_SAVE_AND_EXIT;
Status = CommitChanges (Private, KeyValue, FakeNvData);
}
return Status;
}
/**
This is the function that is called to provide results data to the driver. This data
consists of a unique key which is used to identify what data is either being passed back
or being asked for.
@param This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param Action A null-terminated Unicode string in <ConfigRequest> format.
@param KeyValue A unique Goto OpCode callback value which record user's selection.
0x100 <= KeyValue <0x500 : user select a controller item in the first page;
KeyValue == 0x1234 : user select 'Refresh' in first page, or user select 'Go to Previous Menu' in second page
KeyValue == 0x1235 : user select 'Pci device filter' in first page
KeyValue == 0x1500 : user select 'order ... priority' item in second page
KeyValue == 0x1800 : user select 'commint changes' in third page
KeyValue == 0x2000 : user select 'Go to Previous Menu' in third page
@param Type The type of value for the question.
@param Value A pointer to the data being sent to the original exporting driver.
@param ActionRequest On return, points to the action requested by the callback function.
@retval EFI_SUCCESS Always returned.
**/
EFI_STATUS
EFIAPI
PlatOverMngrCallback (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN EFI_BROWSER_ACTION Action,
IN EFI_QUESTION_ID KeyValue,
IN UINT8 Type,
IN EFI_IFR_TYPE_VALUE *Value,
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
)
{
EFI_CALLBACK_INFO *Private;
EFI_STATUS Status;
EFI_STRING_ID NewStringToken;
EFI_INPUT_KEY Key;
PLAT_OVER_MNGR_DATA *FakeNvData;
if ((Action != EFI_BROWSER_ACTION_CHANGING) && (Action != EFI_BROWSER_ACTION_CHANGED)) {
//
// All other action return unsupported.
//
return EFI_UNSUPPORTED;
}
Private = EFI_CALLBACK_INFO_FROM_THIS (This);
FakeNvData = &Private->FakeNvData;
if (!HiiGetBrowserData (&gPlatformOverridesManagerGuid, mVariableName, sizeof (PLAT_OVER_MNGR_DATA), (UINT8 *) FakeNvData)) {
return EFI_NOT_FOUND;
}
if (Action == EFI_BROWSER_ACTION_CHANGING) {
if (Value == NULL) {
return EFI_INVALID_PARAMETER;
}
if (KeyValue == KEY_VALUE_DRIVER_GOTO_PREVIOUS) {
UpdateDeviceSelectPage (Private, KeyValue, FakeNvData);
//
// Update page title string
//
NewStringToken = STRING_TOKEN (STR_TITLE);
if (HiiSetString (Private->RegisteredHandle, NewStringToken, L"First, Select the controller by device path", NULL) == 0) {
ASSERT (FALSE);
}
}
if (((KeyValue >= KEY_VALUE_DEVICE_OFFSET) && (KeyValue < KEY_VALUE_DEVICE_OFFSET + mMaxDeviceCount)) || (KeyValue == KEY_VALUE_ORDER_GOTO_PREVIOUS)) {
if (KeyValue == KEY_VALUE_ORDER_GOTO_PREVIOUS) {
KeyValue = (EFI_QUESTION_ID) (mSelectedCtrIndex + KEY_VALUE_DEVICE_OFFSET);
}
UpdateBindingDriverSelectPage (Private, KeyValue, FakeNvData);
//
// Update page title string
//
NewStringToken = STRING_TOKEN (STR_TITLE);
if (HiiSetString (Private->RegisteredHandle, NewStringToken, L"Second, Select drivers for the previous selected controller", NULL) == 0) {
ASSERT (FALSE);
}
}
if (KeyValue == KEY_VALUE_DRIVER_GOTO_ORDER) {
UpdatePrioritySelectPage (Private, KeyValue, FakeNvData);
//
// Update page title string
//
NewStringToken = STRING_TOKEN (STR_TITLE);
if (HiiSetString (Private->RegisteredHandle, NewStringToken, L"Finally, Set the priority order for the drivers and save them", NULL) == 0) {
ASSERT (FALSE);
}
}
if (KeyValue == KEY_VALUE_DEVICE_CLEAR) {
//
// Deletes all environment variable(s) that contain the override mappings info
//
FreeMappingDatabase (&mMappingDataBase);
Status = SaveOverridesMapping (&mMappingDataBase);
UpdateDeviceSelectPage (Private, KeyValue, FakeNvData);
}
} else if (Action == EFI_BROWSER_ACTION_CHANGED) {
if ((KeyValue >= KEY_VALUE_DRIVER_OFFSET) && (KeyValue < KEY_VALUE_DRIVER_OFFSET + mDriverImageHandleCount)) {
mDriSelection[KeyValue - KEY_VALUE_DRIVER_OFFSET] = Value->b;
} else {
switch (KeyValue) {
case KEY_VALUE_DEVICE_REFRESH:
case KEY_VALUE_DEVICE_FILTER:
UpdateDeviceSelectPage (Private, KeyValue, FakeNvData);
//
// Update page title string
//
NewStringToken = STRING_TOKEN (STR_TITLE);
if (HiiSetString (Private->RegisteredHandle, NewStringToken, L"First, Select the controller by device path", NULL) == 0) {
ASSERT (FALSE);
}
break;
case KEY_VALUE_ORDER_SAVE_AND_EXIT:
Status = CommitChanges (Private, KeyValue, FakeNvData);
*ActionRequest = EFI_BROWSER_ACTION_REQUEST_SUBMIT;
if (EFI_ERROR (Status)) {
CreatePopUp (EFI_LIGHTGRAY | EFI_BACKGROUND_BLUE, &Key, L"Single Override Info too large, Saving Error!", NULL);
return EFI_DEVICE_ERROR;
}
break;
default:
break;
}
}
}
//
// Pass changed uncommitted data back to Form Browser
//
HiiSetBrowserData (&gPlatformOverridesManagerGuid, mVariableName, sizeof (PLAT_OVER_MNGR_DATA), (UINT8 *) FakeNvData, NULL);
return EFI_SUCCESS;
}
/**
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 NULL.
DriverImageHandle is not a handle that was returned
on a previous call to GetDriver().
**/
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 (EFI_ERROR (Status)){
DEBUG ((DEBUG_ERROR, "The status to Get Platform Driver Override Variable is %r\n", Status));
InitializeListHead (&mMappingDataBase);
return EFI_NOT_FOUND;
}
}
//
// if the environment variable does not exist, just return not found
//
if (IsListEmpty (&mMappingDataBase)) {
return EFI_NOT_FOUND;
}
return GetDriverFromMapping (
ControllerHandle,
DriverImageHandle,
&mMappingDataBase,
mCallerImageHandle
);
}
/**
Retrieves the device path of the platform override driver for a controller in the system.
This driver doesn't support this API.
@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 DriverImagePath On input, a pointer to the previous driver device path returned by
GetDriverPath(). On output, a pointer to the next driver
device path. Passing in a pointer to NULL, will return the first
driver device path for ControllerHandle.
@retval EFI_UNSUPPORTED
**/
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;
}
/**
Used to associate a driver image handle with a device path that was returned on a prior call to the
GetDriverPath() service. This driver image handle will then be available through the
GetDriver() service. This driver doesn't support this API.
@param This A pointer to the EFI_PLATFORM_DRIVER_OVERRIDE_
PROTOCOL instance.
@param ControllerHandle The device handle of the controller.
@param DriverImagePath A pointer to the driver device path that was returned in a prior
call to GetDriverPath().
@param DriverImageHandle The driver image handle that was returned by LoadImage()
when the driver specified by DriverImagePath was loaded
into memory.
@retval EFI_UNSUPPORTED
**/
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;
}
/**
The driver Entry Point. The funciton will export a disk device class formset and
its callback function to hii database.
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval other Some error occurs when executing this entry point.
**/
EFI_STATUS
EFIAPI
PlatDriOverrideDxeInit (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_FORM_BROWSER2_PROTOCOL *FormBrowser2;
VOID *Instance;
//
// There should only be one Form Configuration protocol
//
Status = gBS->LocateProtocol (
&gEfiFormBrowser2ProtocolGuid,
NULL,
(VOID **) &FormBrowser2
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// According to UEFI spec, there can be at most a single instance
// in the system of the EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL.
// So here we check the existence.
//
Status = gBS->LocateProtocol (
&gEfiPlatformDriverOverrideProtocolGuid,
NULL,
&Instance
);
//
// If there was no error, assume there is an installation and return error
//
if (!EFI_ERROR (Status)) {
return EFI_ALREADY_STARTED;
}
mCallerImageHandle = ImageHandle;
mCallbackInfo = AllocateZeroPool (sizeof (EFI_CALLBACK_INFO));
if (mCallbackInfo == NULL) {
return EFI_BAD_BUFFER_SIZE;
}
mCallbackInfo->Signature = EFI_CALLBACK_INFO_SIGNATURE;
mCallbackInfo->ConfigAccess.ExtractConfig = PlatOverMngrExtractConfig;
mCallbackInfo->ConfigAccess.RouteConfig = PlatOverMngrRouteConfig;
mCallbackInfo->ConfigAccess.Callback = PlatOverMngrCallback;
mCallbackInfo->PlatformDriverOverride.GetDriver = GetDriver;
mCallbackInfo->PlatformDriverOverride.GetDriverPath = GetDriverPath;
mCallbackInfo->PlatformDriverOverride.DriverLoaded = DriverLoaded;
//
// Install Device Path Protocol and Config Access protocol to driver handle
// Install Platform Driver Override Protocol to driver handle
//
Status = gBS->InstallMultipleProtocolInterfaces (
&mCallbackInfo->DriverHandle,
&gEfiDevicePathProtocolGuid,
&mHiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&mCallbackInfo->ConfigAccess,
&gEfiPlatformDriverOverrideProtocolGuid,
&mCallbackInfo->PlatformDriverOverride,
NULL
);
if (EFI_ERROR (Status)) {
goto Finish;
}
//
// Publish our HII data
//
mCallbackInfo->RegisteredHandle = HiiAddPackages (
&gPlatformOverridesManagerGuid,
mCallbackInfo->DriverHandle,
VfrBin,
PlatDriOverrideDxeStrings,
NULL
);
if (mCallbackInfo->RegisteredHandle == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Finish;
}
//
// Locate ConfigRouting protocol
//
Status = gBS->LocateProtocol (
&gEfiHiiConfigRoutingProtocolGuid,
NULL,
(VOID **) &mCallbackInfo->HiiConfigRouting
);
if (EFI_ERROR (Status)) {
goto Finish;
}
//
// Clear all the globle variable
//
mDriverImageHandleCount = 0;
mCurrentPage = 0;
return EFI_SUCCESS;
Finish:
PlatDriOverrideDxeUnload (ImageHandle);
return Status;
}
/**
Unload its installed protocol.
@param[in] ImageHandle Handle that identifies the image to be unloaded.
@retval EFI_SUCCESS The image has been unloaded.
**/
EFI_STATUS
EFIAPI
PlatDriOverrideDxeUnload (
IN EFI_HANDLE ImageHandle
)
{
ASSERT (mCallbackInfo != NULL);
if (mCallbackInfo->DriverHandle != NULL) {
gBS->UninstallMultipleProtocolInterfaces (
mCallbackInfo->DriverHandle,
&gEfiDevicePathProtocolGuid,
&mHiiVendorDevicePath,
&gEfiHiiConfigAccessProtocolGuid,
&mCallbackInfo->ConfigAccess,
&gEfiPlatformDriverOverrideProtocolGuid,
&mCallbackInfo->PlatformDriverOverride,
NULL
);
}
if (mCallbackInfo->RegisteredHandle != NULL) {
HiiRemovePackages (mCallbackInfo->RegisteredHandle);
}
FreePool (mCallbackInfo);
if (mControllerToken != NULL) {
FreePool (mControllerToken);
}
if (mControllerDevicePathProtocol != NULL) {
FreePool (mControllerDevicePathProtocol);
}
if (mDriverImageToken != NULL) {
FreePool (mDriverImageToken);
}
return EFI_SUCCESS;
}
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