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audk/EdkCompatibilityPkg/Foundation/Library/Dxe/Include/EfiDriverLib.h

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/*++
Copyright (c) 2004 - 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:
EfiDriverLib.h
Abstract:
Light weight lib to support EFI drivers.
--*/
#ifndef _EFI_DRIVER_LIB_H_
#define _EFI_DRIVER_LIB_H_
#include "EfiStatusCode.h"
#include "EfiCommonLib.h"
#include "EfiPerf.h"
#include "LinkedList.h"
#include "GetImage.h"
#include "EfiImageFormat.h"
#include EFI_GUID_DEFINITION (DxeServices)
#include EFI_GUID_DEFINITION (EventGroup)
#include EFI_GUID_DEFINITION (EventLegacyBios)
#include EFI_GUID_DEFINITION (FrameworkDevicePath)
#include EFI_PROTOCOL_DEFINITION (FirmwareVolume)
#include EFI_PROTOCOL_DEFINITION (FirmwareVolume2)
#include EFI_PROTOCOL_DEFINITION (DataHub)
#include EFI_PROTOCOL_DEFINITION (DriverBinding)
#include EFI_PROTOCOL_DEFINITION (ComponentName)
#include EFI_PROTOCOL_DEFINITION (ComponentName2)
#include EFI_PROTOCOL_DEFINITION (DriverConfiguration)
#include EFI_PROTOCOL_DEFINITION (DriverDiagnostics)
#include EFI_PROTOCOL_DEFINITION (DebugMask)
typedef struct {
CHAR8 *Language;
CHAR16 *UnicodeString;
} EFI_UNICODE_STRING_TABLE;
#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
#define LANGUAGE_RFC_3066
#define LANGUAGE_CODE_ENGLISH "en-US"
#else
#define LANGUAGE_ISO_639_2
#define LANGUAGE_CODE_ENGLISH "eng"
#endif
//
// Macros for EFI Driver Library Functions that are really EFI Boot Services
//
#define EfiCopyMem(_Destination, _Source, _Length) gBS->CopyMem ((_Destination), (_Source), (_Length))
#define EfiSetMem(_Destination, _Length, _Value) gBS->SetMem ((_Destination), (_Length), (_Value))
#define EfiZeroMem(_Destination, _Length) gBS->SetMem ((_Destination), (_Length), 0)
//
// Driver Lib Globals.
//
extern EFI_BOOT_SERVICES *gBS;
extern EFI_DXE_SERVICES *gDS;
extern EFI_RUNTIME_SERVICES *gRT;
extern EFI_SYSTEM_TABLE *gST;
extern UINTN gErrorLevel;
extern EFI_GUID gEfiCallerIdGuid;
extern EFI_DEBUG_MASK_PROTOCOL *gDebugMaskInterface;
EFI_STATUS
EfiInitializeDriverLib (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Intialize Driver Lib if it has not yet been initialized.
Arguments:
ImageHandle - The firmware allocated handle for the EFI image.
SystemTable - A pointer to the EFI System Table.
Returns:
EFI_STATUS always returns EFI_SUCCESS
--*/
;
EFI_STATUS
DxeInitializeDriverLib (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
/*++
Routine Description:
Intialize Driver Lib if it has not yet been initialized.
Arguments:
ImageHandle - The firmware allocated handle for the EFI image.
SystemTable - A pointer to the EFI System Table.
Returns:
EFI_STATUS always returns EFI_SUCCESS
--*/
;
EFI_STATUS
EfiLibInstallDriverBinding (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable,
IN EFI_DRIVER_BINDING_PROTOCOL *DriverBinding,
IN EFI_HANDLE DriverBindingHandle
)
/*++
Routine Description:
Intialize a driver by installing the Driver Binding Protocol onto the
driver's DriverBindingHandle. This is typically the same as the driver's
ImageHandle, but it can be different if the driver produces multiple
DriverBinding Protocols. This function also initializes the EFI Driver
Library that initializes the global variables gST, gBS, gRT.
Arguments:
ImageHandle - The image handle of the driver
SystemTable - The EFI System Table that was passed to the driver's entry point
DriverBinding - A Driver Binding Protocol instance that this driver is producing
DriverBindingHandle - The handle that DriverBinding is to be installe onto. If this
parameter is NULL, then a new handle is created.
Returns:
EFI_SUCCESS is DriverBinding is installed onto DriverBindingHandle
Otherwise, then return status from gBS->InstallProtocolInterface()
--*/
;
EFI_STATUS
EfiLibInstallAllDriverProtocols (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable,
IN EFI_DRIVER_BINDING_PROTOCOL *DriverBinding,
IN EFI_HANDLE DriverBindingHandle,
#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
IN EFI_COMPONENT_NAME2_PROTOCOL *ComponentName,
#else
IN EFI_COMPONENT_NAME_PROTOCOL *ComponentName,
#endif
IN EFI_DRIVER_CONFIGURATION_PROTOCOL *DriverConfiguration,
IN EFI_DRIVER_DIAGNOSTICS_PROTOCOL *DriverDiagnostics
)
/*++
Routine Description:
Intialize a driver by installing the Driver Binding Protocol onto the
driver's DriverBindingHandle. This is typically the same as the driver's
ImageHandle, but it can be different if the driver produces multiple
DriverBinding Protocols. This function also initializes the EFI Driver
Library that initializes the global variables gST, gBS, gRT.
Arguments:
ImageHandle - The image handle of the driver
SystemTable - The EFI System Table that was passed to the driver's entry point
DriverBinding - A Driver Binding Protocol instance that this driver is producing
DriverBindingHandle - The handle that DriverBinding is to be installe onto. If this
parameter is NULL, then a new handle is created.
ComponentName - A Component Name Protocol instance that this driver is producing
DriverConfiguration - A Driver Configuration Protocol instance that this driver is producing
DriverDiagnostics - A Driver Diagnostics Protocol instance that this driver is producing
Returns:
EFI_SUCCESS if all the protocols were installed onto DriverBindingHandle
Otherwise, then return status from gBS->InstallProtocolInterface()
--*/
;
EFI_STATUS
EfiLibGetSystemConfigurationTable (
IN EFI_GUID *TableGuid,
OUT VOID **Table
)
/*++
Routine Description:
Return the EFI 1.0 System Tabl entry with TableGuid
Arguments:
TableGuid - Name of entry to return in the system table
Table - Pointer in EFI system table associated with TableGuid
Returns:
EFI_SUCCESS - Table returned;
EFI_NOT_FOUND - TableGuid not in EFI system table
--*/
;
BOOLEAN
EfiLibCompareLanguage (
CHAR8 *Language1,
CHAR8 *Language2
)
/*++
Routine Description:
Compare two languages to say whether they are identical.
Arguments:
Language1 - first language
Language2 - second language
Returns:
TRUE - identical
FALSE - not identical
--*/
;
//
// DevicePath.c
//
BOOLEAN
EfiIsDevicePathMultiInstance (
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath
)
/*++
Routine Description:
Return TRUE is this is a multi instance device path.
Arguments:
DevicePath - A pointer to a device path data structure.
Returns:
TRUE - If DevicePath is multi instance.
FALSE - If DevicePath is not multi instance.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
EfiDevicePathInstance (
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath,
OUT UINTN *Size
)
/*++
Routine Description:
Function retrieves the next device path instance from a device path data structure.
Arguments:
DevicePath - A pointer to a device path data structure.
Size - A pointer to the size of a device path instance in bytes.
Returns:
This function returns a pointer to the current device path instance.
In addition, it returns the size in bytes of the current device path instance in Size,
and a pointer to the next device path instance in DevicePath.
If there are no more device path instances in DevicePath, then DevicePath will be set to NULL.
--*/
;
UINTN
EfiDevicePathSize (
IN EFI_DEVICE_PATH_PROTOCOL *DevPath
)
/*++
Routine Description:
Calculate the size of a whole device path.
Arguments:
DevPath - The pointer to the device path data.
Returns:
Size of device path data structure..
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
EfiAppendDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *Src1,
IN EFI_DEVICE_PATH_PROTOCOL *Src2
)
/*++
Routine Description:
Function is used to append a Src1 and Src2 together.
Arguments:
Src1 - A pointer to a device path data structure.
Src2 - A pointer to a device path data structure.
Returns:
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 Src1 and Src2 if they are no longer needed.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
EfiDevicePathFromHandle (
IN EFI_HANDLE Handle
)
/*++
Routine Description:
Locate device path protocol interface on a device handle.
Arguments:
Handle - The device handle
Returns:
Device path protocol interface located.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
EfiDuplicateDevicePath (
IN EFI_DEVICE_PATH_PROTOCOL *DevPath
)
/*++
Routine Description:
Duplicate a new device path data structure from the old one.
Arguments:
DevPath - A pointer to a device path data structure.
Returns:
A pointer to the new allocated device path data.
Caller must free the memory used by DevicePath if it is no longer needed.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
EfiAppendDevicePathNode (
IN EFI_DEVICE_PATH_PROTOCOL *Src1,
IN EFI_DEVICE_PATH_PROTOCOL *Src2
)
/*++
Routine Description:
Function is used to append a device path node to the end of another device path.
Arguments:
Src1 - A pointer to a device path data structure.
Src2 - A pointer to a device path data structure.
Returns:
This function returns a pointer to the new device path.
If there is not enough temporary pool memory available to complete this function,
then NULL is returned.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
EfiFileDevicePath (
IN EFI_HANDLE Device OPTIONAL,
IN CHAR16 *FileName
)
/*++
Routine Description:
Create a device path that appends a MEDIA_DEVICE_PATH with
FileNameGuid to the device path of DeviceHandle.
Arguments:
Device - Optional Device Handle to use as Root of the Device Path
FileName - FileName
Returns:
EFI_DEVICE_PATH_PROTOCOL that was allocated from dynamic memory
or NULL pointer.
--*/
;
EFI_DEVICE_PATH_PROTOCOL *
EfiAppendDevicePathInstance (
IN EFI_DEVICE_PATH_PROTOCOL *Src,
IN EFI_DEVICE_PATH_PROTOCOL *Instance
)
/*++
Routine Description:
Append a device path instance to another.
Arguments:
Src - The device path instance to be appended with.
Instance - The device path instance appending the other.
Returns:
The contaction of these two.
--*/
;
//
// Lock.c
//
typedef struct {
EFI_TPL Tpl;
EFI_TPL OwnerTpl;
UINTN Lock;
} EFI_LOCK;
VOID
EfiInitializeLock (
IN OUT EFI_LOCK *Lock,
IN EFI_TPL Priority
)
/*++
Routine Description:
Initialize a basic mutual exclusion lock. Each lock
provides mutual exclusion access at it's task priority
level. Since there is no-premption (at any TPL) or
multiprocessor support, acquiring the lock only consists
of raising to the locks TPL.
Note on a check build ASSERT()s are used to ensure proper
lock usage.
Arguments:
Lock - The EFI_LOCK structure to initialize
Priority - The task priority level of the lock
Returns:
An initialized Efi Lock structure.
--*/
;
//
// Macro to initialize the state of a lock when a lock variable is declared
//
#define EFI_INITIALIZE_LOCK_VARIABLE(Tpl) {Tpl,0,0}
VOID
EfiAcquireLock (
IN EFI_LOCK *Lock
)
/*++
Routine Description:
Raising to the task priority level of the mutual exclusion
lock, and then acquires ownership of the lock.
Arguments:
Lock - The lock to acquire
Returns:
None
--*/
;
EFI_STATUS
EfiAcquireLockOrFail (
IN EFI_LOCK *Lock
)
/*++
Routine Description:
Initialize a basic mutual exclusion lock. Each lock
provides mutual exclusion access at it's task priority
level. Since there is no-premption (at any TPL) or
multiprocessor support, acquiring the lock only consists
of raising to the locks TPL.
Arguments:
Lock - The EFI_LOCK structure to initialize
Returns:
EFI_SUCCESS - Lock Owned.
EFI_ACCESS_DENIED - Reentrant Lock Acquisition, Lock not Owned.
--*/
;
VOID
EfiReleaseLock (
IN EFI_LOCK *Lock
)
/*++
Routine Description:
Releases ownership of the mutual exclusion lock, and
restores the previous task priority level.
Arguments:
Lock - The lock to release
Returns:
None
--*/
;
VOID *
EfiLibAllocatePool (
IN UINTN AllocationSize
)
/*++
Routine Description:
Allocate EfiBootServicesData pool of size AllocationSize
Arguments:
AllocationSize - Pool size
Returns:
Pointer to the pool allocated
--*/
;
VOID *
EfiLibAllocateRuntimePool (
IN UINTN AllocationSize
)
/*++
Routine Description:
Allocate EfiRuntimeServicesData pool of size AllocationSize
Arguments:
AllocationSize - Pool size
Returns:
Pointer to the pool allocated
--*/
;
VOID *
EfiLibAllocateZeroPool (
IN UINTN AllocationSize
)
/*++
Routine Description:
Allocate EfiBootServicesData pool of size AllocationSize and set memory to zero.
Arguments:
AllocationSize - Pool size
Returns:
Pointer to the pool allocated
--*/
;
VOID *
EfiLibAllocateRuntimeZeroPool (
IN UINTN AllocationSize
)
/*++
Routine Description:
Allocate EfiRuntimeServicesData pool of size AllocationSize and set memory to zero.
Arguments:
AllocationSize - Pool size
Returns:
Pointer to the pool allocated
--*/
;
VOID *
EfiLibAllocateCopyPool (
IN UINTN AllocationSize,
IN VOID *Buffer
)
/*++
Routine Description:
Allocate BootServicesData pool and use a buffer provided by
caller to fill it.
Arguments:
AllocationSize - The size to allocate
Buffer - Buffer that will be filled into the buffer allocated
Returns:
Pointer of the buffer allocated.
--*/
;
VOID *
EfiLibAllocateRuntimeCopyPool (
IN UINTN AllocationSize,
IN VOID *Buffer
)
/*++
Routine Description:
Allocate RuntimeServicesData pool and use a buffer provided by
caller to fill it.
Arguments:
AllocationSize - The size to allocate
Buffer - Buffer that will be filled into the buffer allocated
Returns:
Pointer of the buffer allocated.
--*/
;
//
// Event.c
//
EFI_EVENT
EfiLibCreateProtocolNotifyEvent (
IN EFI_GUID *ProtocolGuid,
IN EFI_TPL NotifyTpl,
IN EFI_EVENT_NOTIFY NotifyFunction,
IN VOID *NotifyContext,
OUT VOID **Registration
)
/*++
Routine Description:
Create a protocol notification event and return it.
Arguments:
ProtocolGuid - Protocol to register notification event on.
NotifyTpl - Maximum TPL to single the NotifyFunction.
NotifyFunction - EFI notification routine.
NotifyContext - Context passed into Event when it is created.
Registration - Registration key returned from RegisterProtocolNotify().
Returns:
The EFI_EVENT that has been registered to be signaled when a ProtocolGuid
is added to the system.
--*/
;
EFI_STATUS
EfiLibNamedEventSignal (
IN EFI_GUID *Name
)
/*++
Routine Description:
Signals a named event. All registered listeners will run.
The listeners should register using EfiLibNamedEventListen() function.
NOTE: For now, the named listening/signalling is implemented
on a protocol interface being installed and uninstalled.
In the future, this maybe implemented based on a dedicated mechanism.
Arguments:
Name - Name to perform the signaling on. The name is a GUID.
Returns:
EFI_SUCCESS if successfull.
--*/
;
EFI_STATUS
EfiLibNamedEventListen (
IN EFI_GUID * Name,
IN EFI_TPL NotifyTpl,
IN EFI_EVENT_NOTIFY NotifyFunction,
IN VOID *NotifyContext
)
/*++
Routine Description:
Listenes to signals on the name.
EfiLibNamedEventSignal() signals the event.
NOTE: For now, the named listening/signalling is implemented
on a protocol interface being installed and uninstalled.
In the future, this maybe implemented based on a dedicated mechanism.
Arguments:
Name - Name to register the listener on.
NotifyTpl - Maximum TPL to singnal the NotifyFunction.
NotifyFunction - The listener routine.
NotifyContext - Context passed into the listener routine.
Returns:
EFI_SUCCESS if successful.
--*/
;
//
// Handle.c
//
EFI_STATUS
EfiLibLocateHandleProtocolByProtocols (
IN OUT EFI_HANDLE * Handle, OPTIONAL
OUT VOID **Interface, OPTIONAL
...
)
/*++
Routine Description:
Function locates Protocol and/or Handle on which all Protocols specified
as a variable list are installed.
It supports continued search. The caller must assure that no handles are added
or removed while performing continued search, by e.g., rising the TPL and not
calling any handle routines. Otherwise the behavior is undefined.
Arguments:
Handle - The address of handle to receive the handle on which protocols
indicated by the variable list are installed.
If points to NULL, all handles are searched. If pointing to a
handle returned from previous call, searches starting from next handle.
If NULL, the parameter is ignored.
Interface - The address of a pointer to a protocol interface that will receive
the interface indicated by first variable argument.
If NULL, the parameter is ignored.
... - A variable argument list containing protocol GUIDs. Must end with NULL.
Returns:
EFI_SUCCESS - All the protocols where found on same handle.
EFI_NOT_FOUND - A Handle with all the protocols installed was not found.
Other values as may be returned from LocateHandleBuffer() or HandleProtocol().
--*/
;
//
// Debug.c init
//
EFI_STATUS
EfiDebugAssertInit (
VOID
)
/*++
Routine Description:
Locate Debug Assert Protocol and set as mDebugAssert
Arguments:
None
Returns:
Status code
--*/
;
//
// Unicode String Support
//
EFI_STATUS
EfiLibLookupUnicodeString (
CHAR8 *Language,
CHAR8 *SupportedLanguages,
EFI_UNICODE_STRING_TABLE *UnicodeStringTable,
CHAR16 **UnicodeString
)
/*++
Routine Description:
Translate a unicode string to a specified language if supported.
Arguments:
Language - The name of language to translate to
SupportedLanguages - Supported languages set
UnicodeStringTable - Pointer of one item in translation dictionary
UnicodeString - The translated string
Returns:
EFI_INVALID_PARAMETER - Invalid parameter
EFI_UNSUPPORTED - System not supported this language or this string translation
EFI_SUCCESS - String successfully translated
--*/
;
EFI_STATUS
EfiLibAddUnicodeString (
CHAR8 *Language,
CHAR8 *SupportedLanguages,
EFI_UNICODE_STRING_TABLE **UnicodeStringTable,
CHAR16 *UnicodeString
)
/*++
Routine Description:
Add an translation to the dictionary if this language if supported.
Arguments:
Language - The name of language to translate to
SupportedLanguages - Supported languages set
UnicodeStringTable - Translation dictionary
UnicodeString - The corresponding string for the language to be translated to
Returns:
EFI_INVALID_PARAMETER - Invalid parameter
EFI_UNSUPPORTED - System not supported this language
EFI_ALREADY_STARTED - Already has a translation item of this language
EFI_OUT_OF_RESOURCES - No enough buffer to be allocated
EFI_SUCCESS - String successfully translated
--*/
;
EFI_STATUS
EfiLibFreeUnicodeStringTable (
EFI_UNICODE_STRING_TABLE *UnicodeStringTable
)
/*++
Routine Description:
Free a string table.
Arguments:
UnicodeStringTable - The string table to be freed.
Returns:
EFI_SUCCESS - The table successfully freed.
--*/
;
EFI_STATUS
EfiLibReportStatusCode (
IN EFI_STATUS_CODE_TYPE Type,
IN EFI_STATUS_CODE_VALUE Value,
IN UINT32 Instance,
IN EFI_GUID *CallerId OPTIONAL,
IN EFI_STATUS_CODE_DATA *Data OPTIONAL
)
/*++
Routine Description:
Report status code.
Arguments:
Type - Code type
Value - Code value
Instance - Instance number
CallerId - Caller name
DevicePath - Device path that to be reported
Returns:
Status code.
EFI_OUT_OF_RESOURCES - No enough buffer could be allocated
--*/
;
EFI_STATUS
ReportStatusCodeWithDevicePath (
IN EFI_STATUS_CODE_TYPE Type,
IN EFI_STATUS_CODE_VALUE Value,
IN UINT32 Instance,
IN EFI_GUID * CallerId OPTIONAL,
IN EFI_DEVICE_PATH_PROTOCOL * DevicePath
)
/*++
Routine Description:
Report device path through status code.
Arguments:
Type - Code type
Value - Code value
Instance - Instance number
CallerId - Caller name
DevicePath - Device path that to be reported
Returns:
Status code.
EFI_OUT_OF_RESOURCES - No enough buffer could be allocated
--*/
;
EFI_STATUS
EFIAPI
EfiCreateEventLegacyBoot (
IN EFI_TPL NotifyTpl,
IN EFI_EVENT_NOTIFY NotifyFunction,
IN VOID *NotifyContext,
OUT EFI_EVENT *LegacyBootEvent
)
/*++
Routine Description:
Create a Legacy Boot Event.
Tiano extended the CreateEvent Type enum to add a legacy boot event type.
This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was
added and now it's possible to not voilate the UEFI specification by
declaring a GUID for the legacy boot event class. This library supports
the R8.5/EFI 1.10 form and R8.6/UEFI 2.0 form and allows common code to
work both ways.
Arguments:
LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex)
Returns:
EFI_SUCCESS Event was created.
Other Event was not created.
--*/
;
EFI_STATUS
EFIAPI
EfiCreateEventReadyToBoot (
IN EFI_TPL NotifyTpl,
IN EFI_EVENT_NOTIFY NotifyFunction,
IN VOID *NotifyContext,
OUT EFI_EVENT *ReadyToBootEvent
)
/*++
Routine Description:
Create a Read to Boot Event.
Tiano extended the CreateEvent Type enum to add a ready to boot event type.
This was bad as Tiano did not own the enum. In UEFI 2.0 CreateEventEx was
added and now it's possible to not voilate the UEFI specification and use
the ready to boot event class defined in UEFI 2.0. This library supports
the R8.5/EFI 1.10 form and R8.6/UEFI 2.0 form and allows common code to
work both ways.
Arguments:
@param LegacyBootEvent Returns the EFI event returned from gBS->CreateEvent(Ex)
Return:
EFI_SUCCESS - Event was created.
Other - Event was not created.
--*/
;
VOID
EFIAPI
EfiInitializeFwVolDevicepathNode (
IN MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode,
IN EFI_GUID *NameGuid
)
/*++
Routine Description:
Initialize a Firmware Volume (FV) Media Device Path node.
Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum
so as we move to UEFI 2.0 support we must use a mechanism that conforms with
the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed
device path is defined for PIWG extensions of device path. If the code
is compiled to conform with the UEFI 2.0 specification use the new device path
else use the old form for backwards compatability.
Arguments:
FvDevicePathNode - Pointer to a FV device path node to initialize
NameGuid - FV file name to use in FvDevicePathNode
--*/
;
EFI_GUID *
EFIAPI
EfiGetNameGuidFromFwVolDevicePathNode (
IN MEDIA_FW_VOL_FILEPATH_DEVICE_PATH *FvDevicePathNode
)
/*++
Routine Description:
Check to see if the Firmware Volume (FV) Media Device Path is valid.
Tiano extended the EFI 1.10 device path nodes. Tiano does not own this enum
so as we move to UEFI 2.0 support we must use a mechanism that conforms with
the UEFI 2.0 specification to define the FV device path. An UEFI GUIDed
device path is defined for PIWG extensions of device path. If the code
is compiled to conform with the UEFI 2.0 specification use the new device path
else use the old form for backwards compatability. The return value to this
function points to a location in FvDevicePathNode and it does not allocate
new memory for the GUID pointer that is returned.
Arguments:
FvDevicePathNode - Pointer to FV device path to check
Return:
NULL - FvDevicePathNode is not valid.
Other - FvDevicePathNode is valid and pointer to NameGuid was returned.
--*/
;
VOID
EfiLibSafeFreePool (
IN VOID *Buffer
)
/*++
Routine Description:
Free pool safely.
Arguments:
Buffer - The allocated pool entry to free
Returns:
Pointer of the buffer allocated.
--*/
;
EFI_STATUS
EfiLibTestManagedDevice (
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE DriverBindingHandle,
IN EFI_GUID *ManagedProtocolGuid
)
/*++
Routine Description:
Test to see if the controller is managed by a specific driver.
Arguments:
ControllerHandle - Handle for controller to test
DriverBindingHandle - Driver binding handle for controller
ManagedProtocolGuid - The protocol guid the driver opens on controller
Returns:
EFI_SUCCESS - The controller is managed by the driver
EFI_UNSUPPORTED - The controller is not managed by the driver
--*/
;
EFI_STATUS
EfiLibTestChildHandle (
IN EFI_HANDLE ControllerHandle,
IN EFI_HANDLE ChildHandle,
IN EFI_GUID *ConsumedGuid
)
/*++
Routine Description:
Test to see if the child handle is the child of the controller
Arguments:
ControllerHandle - Handle for controller (parent)
ChildHandle - Child handle to test
ConsumsedGuid - Protocol guid consumed by child from controller
Returns:
EFI_SUCCESS - The child handle is the child of the controller
EFI_UNSUPPORTED - The child handle is not the child of the controller
--*/
;
#endif
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