mirror of https://github.com/acidanthera/audk.git
Code scrub for DevicePathDxe driver.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5479 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qhuang8
parent
eceb3a4cb9
commit
572f5d8a7b
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@ -17,7 +17,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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EFI_HANDLE mDevicePathHandle = NULL;
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GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_UTILITIES_PROTOCOL mDevicePathUtilities = {
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GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_DEVICE_PATH_UTILITIES_PROTOCOL mDevicePathUtilities = {
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GetDevicePathSizeProtocolInterface,
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DuplicateDevicePathProtocolInterface,
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AppendDevicePathProtocolInterface,
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@ -28,42 +28,43 @@ GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_UTILITIES_PROTOCOL mDevicePa
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CreateDeviceNodeProtocolInterface
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};
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GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_TO_TEXT_PROTOCOL mDevicePathToText = {
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GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_DEVICE_PATH_TO_TEXT_PROTOCOL mDevicePathToText = {
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ConvertDeviceNodeToText,
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ConvertDevicePathToText
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};
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GLOBAL_REMOVE_IF_UNREFERENCED const EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL mDevicePathFromText = {
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ConvertTextToDeviceNode,
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ConvertTextToDevicePath
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GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL mDevicePathFromText = {
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ConvertTextToDeviceNode,
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ConvertTextToDevicePath
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};
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GLOBAL_REMOVE_IF_UNREFERENCED const EFI_GUID mEfiDevicePathMessagingUartFlowControlGuid = DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL;
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GLOBAL_REMOVE_IF_UNREFERENCED const EFI_GUID mEfiDevicePathMessagingSASGuid = DEVICE_PATH_MESSAGING_SAS;
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GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_GUID mEfiDevicePathMessagingUartFlowControlGuid = DEVICE_PATH_MESSAGING_UART_FLOW_CONTROL;
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GLOBAL_REMOVE_IF_UNREFERENCED CONST EFI_GUID mEfiDevicePathMessagingSASGuid = DEVICE_PATH_MESSAGING_SAS;
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/**
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The user Entry Point for DevicePath module.
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This is the entrhy point for DevicePath module. It installs the UEFI Device Path Utility Protocol and
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optionall the Device Path to Text and Device Path from Text protocols based on feature flags.
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@param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The entry point is executed successfully.
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@retval Others Some error occurs when executing this entry point.
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**/
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EFI_STATUS
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EFIAPI
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DevicePathEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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/*++
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Routine Description:
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Entry point for EFI drivers.
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Arguments:
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ImageHandle - EFI_HANDLE
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SystemTable - EFI_SYSTEM_TABLE
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Returns:
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EFI_SUCCESS
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others
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--*/
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{
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EFI_STATUS Status;
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Status = EFI_UNSUPPORTED;
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if (FeaturePcdGet (PcdDevicePathSupportDevicePathToText)) {
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if (FeaturePcdGet (PcdDevicePathSupportDevicePathFromText)) {
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@ -12,8 +12,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _DEVICE_PATH_DRIVER_H
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#define _DEVICE_PATH_DRIVER_H
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#ifndef _DEVICE_PATH_DRIVER_H_
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#define _DEVICE_PATH_DRIVER_H_
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#include <PiDxe.h>
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#include <Protocol/DevicePathUtilities.h>
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@ -51,7 +51,7 @@ extern const EFI_GUID mEfiDevicePathMessagingSASGuid;
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#define DEVICE_PATH_INSTANCE_END 2
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#define DEVICE_PATH_END 3
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#define SetDevicePathInstanceEndNode(a) { \
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#define SET_DEVICE_PATH_INSTANCE_END_NODE(a) { \
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(a)->Type = END_DEVICE_PATH_TYPE; \
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(a)->SubType = END_INSTANCE_DEVICE_PATH_SUBTYPE; \
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(a)->Length[0] = sizeof (EFI_DEVICE_PATH_PROTOCOL); \
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@ -67,6 +67,12 @@ typedef struct {
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UINTN MaxLen;
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} POOL_PRINT;
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typedef
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EFI_DEVICE_PATH_PROTOCOL *
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(*DUMP_NODE) (
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IN CHAR16 *DeviceNodeStr
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);
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typedef struct {
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UINT8 Type;
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UINT8 SubType;
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@ -75,7 +81,7 @@ typedef struct {
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typedef struct {
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CHAR16 *DevicePathNodeText;
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EFI_DEVICE_PATH_PROTOCOL * (*Function) (CHAR16 *);
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DUMP_NODE Function;
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} DEVICE_PATH_FROM_TEXT_TABLE;
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typedef struct {
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@ -148,273 +154,279 @@ typedef struct {
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#pragma pack()
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/**
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Converts a device node to its string representation.
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@param DeviceNode A Pointer to the device node to be converted.
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@param DisplayOnly If DisplayOnly is TRUE, then the shorter text representation
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of the display node is used, where applicable. If DisplayOnly
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is FALSE, then the longer text representation of the display node
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is used.
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@param AllowShortcuts If AllowShortcuts is TRUE, then the shortcut forms of text
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representation for a device node can be used, where applicable.
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@return A pointer to the allocated text representation of the device node or NULL if DeviceNode
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is NULL or there was insufficient memory.
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**/
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CHAR16 *
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EFIAPI
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ConvertDeviceNodeToText (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode,
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IN BOOLEAN DisplayOnly,
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IN BOOLEAN AllowShortcuts
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)
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/*++
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);
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Routine Description:
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Convert a device node to its text representation.
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/**
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Converts a device path to its text representation.
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Arguments:
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DeviceNode - Points to the device node to be converted.
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DisplayOnly - If DisplayOnly is TRUE, then the shorter text representation
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@param DevicePath A Pointer to the device to be converted.
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@param DisplayOnly If DisplayOnly is TRUE, then the shorter text representation
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of the display node is used, where applicable. If DisplayOnly
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is FALSE, then the longer text representation of the display node
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is used.
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AllowShortcuts - If AllowShortcuts is TRUE, then the shortcut forms of text
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@param AllowShortcuts If AllowShortcuts is TRUE, then the shortcut forms of text
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representation for a device node can be used, where applicable.
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Returns:
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A pointer - a pointer to the allocated text representation of the device node.
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NULL - if DeviceNode is NULL or there was insufficient memory.
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--*/
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;
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@return A pointer to the allocated text representation of the device path or
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NULL if DeviceNode is NULL or there was insufficient memory.
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**/
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CHAR16 *
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EFIAPI
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ConvertDevicePathToText (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode,
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IN BOOLEAN DisplayOnly,
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IN BOOLEAN AllowShortcuts
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)
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/*++
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
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IN BOOLEAN DisplayOnly,
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IN BOOLEAN AllowShortcuts
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);
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Routine Description:
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Convert a device path to its text representation.
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/**
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Convert text to the binary representation of a device node.
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Arguments:
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DeviceNode - Points to the device path to be converted.
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DisplayOnly - If DisplayOnly is TRUE, then the shorter text representation
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of the display node is used, where applicable. If DisplayOnly
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is FALSE, then the longer text representation of the display node
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is used.
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AllowShortcuts - If AllowShortcuts is TRUE, then the shortcut forms of text
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representation for a device node can be used, where applicable.
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Returns:
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A pointer - a pointer to the allocated text representation of the device path.
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NULL - if DeviceNode is NULL or there was insufficient memory.
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--*/
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;
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EFI_DEVICE_PATH_PROTOCOL *
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ConvertTextToDeviceNode (
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IN CONST CHAR16 *TextDeviceNode
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)
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/*++
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Routine Description:
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Convert text to the binary representation of a device node.
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Arguments:
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TextDeviceNode - TextDeviceNode points to the text representation of a device
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@param TextDeviceNode TextDeviceNode points to the text representation of a device
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node. Conversion starts with the first character and continues
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until the first non-device node character.
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Returns:
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A pointer - Pointer to the EFI device node.
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NULL - if TextDeviceNode is NULL or there was insufficient memory.
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--*/
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;
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@return A pointer to the EFI device node or NULL if TextDeviceNode is NULL or there was
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insufficient memory or text unsupported.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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ConvertTextToDevicePath (
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IN CONST CHAR16 *TextDevicePath
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)
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/*++
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EFIAPI
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ConvertTextToDeviceNode (
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IN CONST CHAR16 *TextDeviceNode
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);
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Routine Description:
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Convert text to the binary representation of a device path.
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/**
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Convert text to the binary representation of a device path.
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Arguments:
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TextDevicePath - TextDevicePath points to the text representation of a device
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@param TextDevicePath TextDevicePath points to the text representation of a device
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path. Conversion starts with the first character and continues
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until the first non-device node character.
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Returns:
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A pointer - Pointer to the allocated device path.
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NULL - if TextDeviceNode is NULL or there was insufficient memory.
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@return A pointer to the allocated device path or NULL if TextDeviceNode is NULL or
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there was insufficient memory.
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--*/
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;
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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ConvertTextToDevicePath (
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IN CONST CHAR16 *TextDevicePath
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);
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/**
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Returns the size of a device path in bytes.
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This function returns the size, in bytes, of the device path data structure specified by
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DevicePath including the end of device path node. If DevicePath is NULL, then 0 is returned.
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@param DevicePath A pointer to a device path data structure.
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@return The size of a device path in bytes.
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**/
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UINTN
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EFIAPI
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GetDevicePathSizeProtocolInterface (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
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)
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/*++
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);
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Routine Description:
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Returns the size of the device path, in bytes.
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/**
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Creates a new device path by appending a second device path to a first device path.
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Arguments:
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DevicePath - Points to the start of the EFI device path.
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This function allocates space for a new copy of the device path specified by DevicePath. If
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DevicePath is NULL, then NULL is returned. If the memory is successfully allocated, then the
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contents of DevicePath are copied to the newly allocated buffer, and a pointer to that buffer
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is returned. Otherwise, NULL is returned.
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Returns:
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Size - Size of the specified device path, in bytes, including the end-of-path tag.
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@param DevicePath A pointer to a device path data structure.
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--*/
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;
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@return A pointer to the duplicated device path.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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DuplicateDevicePathProtocolInterface (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
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)
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/*++
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);
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Routine Description:
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Create a duplicate of the specified path.
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/**
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Creates a new device path by appending a second device path to a first device path.
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Arguments:
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DevicePath - Points to the source EFI device path.
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This function creates a new device path by appending a copy of SecondDevicePath to a copy of
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FirstDevicePath in a newly allocated buffer. Only the end-of-device-path device node from
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SecondDevicePath is retained. The newly created device path is returned.
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If FirstDevicePath is NULL, then it is ignored, and a duplicate of SecondDevicePath is returned.
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If SecondDevicePath is NULL, then it is ignored, and a duplicate of FirstDevicePath is returned.
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If both FirstDevicePath and SecondDevicePath are NULL, then a copy of an end-of-device-path is
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returned.
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If there is not enough memory for the newly allocated buffer, then NULL is returned.
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The memory for the new device path is allocated from EFI boot services memory. It is the
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responsibility of the caller to free the memory allocated.
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Returns:
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Pointer - A pointer to the duplicate device path.
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NULL - Insufficient memory.
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@param FirstDevicePath A pointer to a device path data structure.
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@param SecondDevicePath A pointer to a device path data structure.
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--*/
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;
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@return A pointer to the new device path.
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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AppendDevicePathProtocolInterface (
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IN CONST EFI_DEVICE_PATH_PROTOCOL *Src1,
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IN CONST EFI_DEVICE_PATH_PROTOCOL *Src2
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)
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/*++
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IN CONST EFI_DEVICE_PATH_PROTOCOL *FirstDevicePath,
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IN CONST EFI_DEVICE_PATH_PROTOCOL *SecondDevicePath
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);
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Routine Description:
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Create a new path by appending the second device path to the first.
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/**
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Creates a new path by appending the device node to the device path.
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Arguments:
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Src1 - Points to the first device path. If NULL, then it is ignored.
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Src2 - Points to the second device path. If NULL, then it is ignored.
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This function creates a new device path by appending a copy of the device node specified by
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DevicePathNode to a copy of the device path specified by DevicePath in an allocated buffer.
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The end-of-device-path device node is moved after the end of the appended device node.
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If DevicePathNode is NULL then a copy of DevicePath is returned.
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If DevicePath is NULL then a copy of DevicePathNode, followed by an end-of-device path device
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node is returned.
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If both DevicePathNode and DevicePath are NULL then a copy of an end-of-device-path device node
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is returned.
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If there is not enough memory to allocate space for the new device path, then NULL is returned.
|
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The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
|
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free the memory allocated.
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Returns:
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Pointer - A pointer to the newly created device path.
|
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NULL - Memory could not be allocated
|
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or either DevicePath or DeviceNode is NULL.
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@param DevicePath A pointer to a device path data structure.
|
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@param DevicePathNode A pointer to a single device path node.
|
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--*/
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;
|
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@return A pointer to the new device path.
|
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|
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**/
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EFI_DEVICE_PATH_PROTOCOL *
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EFIAPI
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AppendDeviceNodeProtocolInterface (
|
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IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode
|
||||
)
|
||||
/*++
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathNode
|
||||
);
|
||||
|
||||
Routine Description:
|
||||
Creates a new path by appending the device node to the device path.
|
||||
/**
|
||||
Creates a new device path by appending the specified device path instance to the specified device
|
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path.
|
||||
|
||||
Arguments:
|
||||
DevicePath - Points to the device path.
|
||||
DeviceNode - Points to the device node.
|
||||
This function creates a new device path by appending a copy of the device path instance specified
|
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by DevicePathInstance to a copy of the device path secified by DevicePath in a allocated buffer.
|
||||
The end-of-device-path device node is moved after the end of the appended device path instance
|
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and a new end-of-device-path-instance node is inserted between.
|
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If DevicePath is NULL, then a copy if DevicePathInstance is returned.
|
||||
If DevicePathInstance is NULL, then NULL is returned.
|
||||
If there is not enough memory to allocate space for the new device path, then NULL is returned.
|
||||
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
|
||||
free the memory allocated.
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the allocated device node.
|
||||
NULL - Memory could not be allocated
|
||||
or either DevicePath or DeviceNode is NULL.
|
||||
@param DevicePath A pointer to a device path data structure.
|
||||
@param DevicePathInstance A pointer to a device path instance.
|
||||
|
||||
--*/
|
||||
;
|
||||
@return A pointer to the new device path.
|
||||
|
||||
**/
|
||||
EFI_DEVICE_PATH_PROTOCOL *
|
||||
EFIAPI
|
||||
AppendDevicePathInstanceProtocolInterface (
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathInstance
|
||||
)
|
||||
/*++
|
||||
);
|
||||
|
||||
Routine Description:
|
||||
Creates a new path by appending the specified device path instance to the specified device path.
|
||||
/**
|
||||
Creates a copy of the current device path instance and returns a pointer to the next device path
|
||||
instance.
|
||||
|
||||
Arguments:
|
||||
DevicePath - Points to the device path. If NULL, then ignored.
|
||||
DevicePathInstance - Points to the device path instance.
|
||||
This function creates a copy of the current device path instance. It also updates DevicePath to
|
||||
point to the next device path instance in the device path (or NULL if no more) and updates Size
|
||||
to hold the size of the device path instance copy.
|
||||
If DevicePath is NULL, then NULL is returned.
|
||||
If there is not enough memory to allocate space for the new device path, then NULL is returned.
|
||||
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
|
||||
free the memory allocated.
|
||||
If Size is NULL, then ASSERT().
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the newly created device path
|
||||
NULL - Memory could not be allocated or DevicePathInstance is NULL.
|
||||
@param DevicePath On input, this holds the pointer to the current device path
|
||||
instance. On output, this holds the pointer to the next device
|
||||
path instance or NULL if there are no more device path
|
||||
instances in the device path pointer to a device path data
|
||||
structure.
|
||||
@param Size On output, this holds the size of the device path instance, in
|
||||
bytes or zero, if DevicePath is NULL.
|
||||
|
||||
--*/
|
||||
;
|
||||
@return A pointer to the current device path instance.
|
||||
|
||||
**/
|
||||
EFI_DEVICE_PATH_PROTOCOL *
|
||||
EFIAPI
|
||||
GetNextDevicePathInstanceProtocolInterface (
|
||||
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePathInstance,
|
||||
OUT UINTN *DevicePathInstanceSize
|
||||
)
|
||||
/*++
|
||||
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath,
|
||||
OUT UINTN *Size
|
||||
);
|
||||
|
||||
Routine Description:
|
||||
Creates a copy of the current device path instance and returns a pointer to the next device path instance.
|
||||
/**
|
||||
Determines if a device path is single or multi-instance.
|
||||
|
||||
Arguments:
|
||||
DevicePathInstance - On input, this holds the pointer to the current device path
|
||||
instance. On output, this holds the pointer to the next
|
||||
device path instance or NULL if there are no more device
|
||||
path instances in the device path.
|
||||
DevicePathInstanceSize - On output, this holds the size of the device path instance,
|
||||
in bytes or zero, if DevicePathInstance is zero.
|
||||
This function returns TRUE if the device path specified by DevicePath is multi-instance.
|
||||
Otherwise, FALSE is returned. If DevicePath is NULL, then FALSE is returned.
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the copy of the current device path instance.
|
||||
NULL - DevicePathInstace was NULL on entry or there was insufficient memory.
|
||||
@param DevicePath A pointer to a device path data structure.
|
||||
|
||||
--*/
|
||||
;
|
||||
@retval TRUE DevicePath is multi-instance.
|
||||
@retval FALSE DevicePath is not multi-instance or DevicePath is NULL.
|
||||
|
||||
**/
|
||||
BOOLEAN
|
||||
EFIAPI
|
||||
IsDevicePathMultiInstanceProtocolInterface (
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
|
||||
)
|
||||
/*++
|
||||
);
|
||||
|
||||
Routine Description:
|
||||
Returns whether a device path is multi-instance.
|
||||
/**
|
||||
Creates a copy of the current device path instance and returns a pointer to the next device path
|
||||
instance.
|
||||
|
||||
Arguments:
|
||||
DevicePath - Points to the device path. If NULL, then ignored.
|
||||
This function creates a new device node in a newly allocated buffer of size NodeLength and
|
||||
initializes the device path node header with NodeType and NodeSubType. The new device path node
|
||||
is returned.
|
||||
If NodeLength is smaller than a device path header, then NULL is returned.
|
||||
If there is not enough memory to allocate space for the new device path, then NULL is returned.
|
||||
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
|
||||
free the memory allocated.
|
||||
|
||||
Returns:
|
||||
TRUE - The device path has more than one instance
|
||||
FALSE - The device path is empty or contains only a single instance.
|
||||
@param NodeType The device node type for the new device node.
|
||||
@param NodeSubType The device node sub-type for the new device node.
|
||||
@param NodeLength The length of the new device node.
|
||||
|
||||
--*/
|
||||
;
|
||||
@return The new device path.
|
||||
|
||||
**/
|
||||
EFI_DEVICE_PATH_PROTOCOL *
|
||||
EFIAPI
|
||||
CreateDeviceNodeProtocolInterface (
|
||||
IN UINT8 NodeType,
|
||||
IN UINT8 NodeSubType,
|
||||
IN UINT16 NodeLength
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Creates a device node
|
||||
|
||||
Arguments:
|
||||
NodeType - NodeType is the device node type (EFI_DEVICE_PATH.Type) for
|
||||
the new device node.
|
||||
NodeSubType - NodeSubType is the device node sub-type
|
||||
EFI_DEVICE_PATH.SubType) for the new device node.
|
||||
NodeLength - NodeLength is the length of the device node
|
||||
(EFI_DEVICE_PATH.Length) for the new device node.
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the newly created device node.
|
||||
NULL - NodeLength is less than
|
||||
the size of the header or there was insufficient memory.
|
||||
|
||||
--*/
|
||||
;
|
||||
);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -1,19 +1,19 @@
|
|||
#/** @file
|
||||
#
|
||||
#
|
||||
# Component description file for Device Path Driver.
|
||||
#
|
||||
#
|
||||
# This driver implement these three UEFI deveice path protocols (
|
||||
# DevicePathUtilities, DevicePahtToText and DevicePathFromText) and install them.
|
||||
#
|
||||
#
|
||||
# Copyright (c) 2006 - 2008, 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.
|
||||
#
|
||||
#
|
||||
#**/
|
||||
|
||||
[Defines]
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
|
|
@ -14,191 +14,221 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|||
|
||||
#include "DevicePath.h"
|
||||
|
||||
/**
|
||||
Returns the size of a device path in bytes.
|
||||
|
||||
This function returns the size, in bytes, of the device path data structure specified by
|
||||
DevicePath including the end of device path node. 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.
|
||||
|
||||
**/
|
||||
UINTN
|
||||
EFIAPI
|
||||
GetDevicePathSizeProtocolInterface (
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Returns the size of the device path, in bytes.
|
||||
|
||||
Arguments:
|
||||
DevicePath - Points to the start of the EFI device path.
|
||||
|
||||
Returns:
|
||||
Size - Size of the specified device path, in bytes, including the end-of-path tag.
|
||||
|
||||
--*/
|
||||
{
|
||||
return GetDevicePathSize (DevicePath);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
Creates a new device path by appending a second device path to a first device path.
|
||||
|
||||
This function allocates space for a new copy of the device path specified by DevicePath. If
|
||||
DevicePath is NULL, then NULL is returned. If the memory is successfully allocated, then the
|
||||
contents of DevicePath are copied to the newly allocated buffer, and a pointer to that buffer
|
||||
is returned. Otherwise, NULL is returned.
|
||||
|
||||
@param DevicePath A pointer to a device path data structure.
|
||||
|
||||
@return A pointer to the duplicated device path.
|
||||
|
||||
**/
|
||||
EFI_DEVICE_PATH_PROTOCOL *
|
||||
EFIAPI
|
||||
DuplicateDevicePathProtocolInterface (
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Create a duplicate of the specified path.
|
||||
|
||||
Arguments:
|
||||
DevicePath - Points to the source EFI device path.
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the duplicate device path.
|
||||
NULL - Insufficient memory.
|
||||
|
||||
--*/
|
||||
{
|
||||
return DuplicateDevicePath (DevicePath);
|
||||
}
|
||||
|
||||
/**
|
||||
Creates a new device path by appending a second device path to a first device path.
|
||||
|
||||
This function creates a new device path by appending a copy of SecondDevicePath to a copy of
|
||||
FirstDevicePath in a newly allocated buffer. Only the end-of-device-path device node from
|
||||
SecondDevicePath is retained. The newly created device path is returned.
|
||||
If FirstDevicePath is NULL, then it is ignored, and a duplicate of SecondDevicePath is returned.
|
||||
If SecondDevicePath is NULL, then it is ignored, and a duplicate of FirstDevicePath is returned.
|
||||
If both FirstDevicePath and SecondDevicePath are NULL, then a copy of an end-of-device-path is
|
||||
returned.
|
||||
If there is not enough memory for the newly allocated buffer, then NULL is returned.
|
||||
The memory for the new device path is allocated from EFI boot services memory. It is the
|
||||
responsibility of the caller to free the memory allocated.
|
||||
|
||||
@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.
|
||||
|
||||
**/
|
||||
EFI_DEVICE_PATH_PROTOCOL *
|
||||
EFIAPI
|
||||
AppendDevicePathProtocolInterface (
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *Src1,
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *Src2
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *FirstDevicePath,
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *SecondDevicePath
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Create a new path by appending the second device path to the first.
|
||||
|
||||
Arguments:
|
||||
Src1 - Points to the first device path. If NULL, then it is ignored.
|
||||
Src2 - Points to the second device path. If NULL, then it is ignored.
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the newly created device path.
|
||||
NULL - Memory could not be allocated
|
||||
or either DevicePath or DeviceNode is NULL.
|
||||
|
||||
--*/
|
||||
{
|
||||
return AppendDevicePath (Src1, Src2);
|
||||
return AppendDevicePath (FirstDevicePath, SecondDevicePath);
|
||||
}
|
||||
|
||||
/**
|
||||
Creates a new path by appending the device node to the device path.
|
||||
|
||||
This function creates a new device path by appending a copy of the device node specified by
|
||||
DevicePathNode to a copy of the device path specified by DevicePath in an allocated buffer.
|
||||
The end-of-device-path device node is moved after the end of the appended device node.
|
||||
If DevicePathNode is NULL then a copy of DevicePath is returned.
|
||||
If DevicePath is NULL then a copy of DevicePathNode, followed by an end-of-device path device
|
||||
node is returned.
|
||||
If both DevicePathNode and DevicePath are NULL then a copy of an end-of-device-path device node
|
||||
is returned.
|
||||
If there is not enough memory to allocate space for the new device path, then NULL is returned.
|
||||
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
|
||||
free the memory allocated.
|
||||
|
||||
@param DevicePath A pointer to a device path data structure.
|
||||
@param DevicePathNode A pointer to a single device path node.
|
||||
|
||||
@return A pointer to the new device path.
|
||||
|
||||
**/
|
||||
EFI_DEVICE_PATH_PROTOCOL *
|
||||
EFIAPI
|
||||
AppendDeviceNodeProtocolInterface (
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DeviceNode
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathNode
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Creates a new path by appending the device node to the device path.
|
||||
|
||||
Arguments:
|
||||
DevicePath - Points to the device path.
|
||||
DeviceNode - Points to the device node.
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the allocated device node.
|
||||
NULL - Memory could not be allocated
|
||||
or either DevicePath or DeviceNode is NULL.
|
||||
|
||||
--*/
|
||||
{
|
||||
return AppendDevicePathNode (DevicePath, DeviceNode);
|
||||
return AppendDevicePathNode (DevicePath, DevicePathNode);
|
||||
}
|
||||
|
||||
/**
|
||||
Creates a new device path by appending the specified device path instance to the specified device
|
||||
path.
|
||||
|
||||
This function creates a new device path by appending a copy of the device path instance specified
|
||||
by DevicePathInstance to a copy of the device path secified by DevicePath in a allocated buffer.
|
||||
The end-of-device-path device node is moved after the end of the appended device path instance
|
||||
and a new end-of-device-path-instance node is inserted between.
|
||||
If DevicePath is NULL, then a copy if DevicePathInstance is returned.
|
||||
If DevicePathInstance is NULL, then NULL is returned.
|
||||
If there is not enough memory to allocate space for the new device path, then NULL is returned.
|
||||
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
|
||||
free the memory allocated.
|
||||
|
||||
@param DevicePath A pointer to a device path data structure.
|
||||
@param DevicePathInstance A pointer to a device path instance.
|
||||
|
||||
@return A pointer to the new device path.
|
||||
|
||||
**/
|
||||
EFI_DEVICE_PATH_PROTOCOL *
|
||||
EFIAPI
|
||||
AppendDevicePathInstanceProtocolInterface (
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath,
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePathInstance
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Creates a new path by appending the specified device path instance to the specified device path.
|
||||
|
||||
Arguments:
|
||||
DevicePath - Points to the device path. If NULL, then ignored.
|
||||
DevicePathInstance - Points to the device path instance.
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the newly created device path
|
||||
NULL - Memory could not be allocated or DevicePathInstance is NULL.
|
||||
|
||||
--*/
|
||||
{
|
||||
return AppendDevicePathInstance (DevicePath, DevicePathInstance);
|
||||
}
|
||||
|
||||
/**
|
||||
Creates a copy of the current device path instance and returns a pointer to the next device path
|
||||
instance.
|
||||
|
||||
This function creates a copy of the current device path instance. It also updates DevicePath to
|
||||
point to the next device path instance in the device path (or NULL if no more) and updates Size
|
||||
to hold the size of the device path instance copy.
|
||||
If DevicePath is NULL, then NULL is returned.
|
||||
If there is not enough memory to allocate space for the new device path, then NULL is returned.
|
||||
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
|
||||
free the memory allocated.
|
||||
If Size is NULL, then ASSERT().
|
||||
|
||||
@param DevicePath On input, this holds the pointer to the current device path
|
||||
instance. On output, this holds the pointer to the next device
|
||||
path instance or NULL if there are no more device path
|
||||
instances in the device path pointer to a device path data
|
||||
structure.
|
||||
@param Size On output, this holds the size of the device path instance, in
|
||||
bytes or zero, if DevicePath is NULL.
|
||||
|
||||
@return A pointer to the current device path instance.
|
||||
|
||||
**/
|
||||
EFI_DEVICE_PATH_PROTOCOL *
|
||||
EFIAPI
|
||||
GetNextDevicePathInstanceProtocolInterface (
|
||||
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePathInstance,
|
||||
OUT UINTN *DevicePathInstanceSize
|
||||
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath,
|
||||
OUT UINTN *Size
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Creates a copy of the current device path instance and returns a pointer to the next device path instance.
|
||||
|
||||
Arguments:
|
||||
DevicePathInstance - On input, this holds the pointer to the current device path
|
||||
instance. On output, this holds the pointer to the next
|
||||
device path instance or NULL if there are no more device
|
||||
path instances in the device path.
|
||||
DevicePathInstanceSize - On output, this holds the size of the device path instance,
|
||||
in bytes or zero, if DevicePathInstance is zero.
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the copy of the current device path instance.
|
||||
NULL - DevicePathInstace was NULL on entry or there was insufficient memory.
|
||||
|
||||
--*/
|
||||
{
|
||||
return GetNextDevicePathInstance (DevicePathInstance, DevicePathInstanceSize);
|
||||
return GetNextDevicePathInstance (DevicePath, Size);
|
||||
}
|
||||
|
||||
/**
|
||||
Determines if a device path is single or multi-instance.
|
||||
|
||||
This function returns TRUE if the device path specified by DevicePath is multi-instance.
|
||||
Otherwise, FALSE is returned. If DevicePath is NULL, then FALSE is returned.
|
||||
|
||||
@param DevicePath A pointer to a device path data structure.
|
||||
|
||||
@retval TRUE DevicePath is multi-instance.
|
||||
@retval FALSE DevicePath is not multi-instance or DevicePath is NULL.
|
||||
|
||||
**/
|
||||
BOOLEAN
|
||||
EFIAPI
|
||||
IsDevicePathMultiInstanceProtocolInterface (
|
||||
IN CONST EFI_DEVICE_PATH_PROTOCOL *DevicePath
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Returns whether a device path is multi-instance.
|
||||
|
||||
Arguments:
|
||||
DevicePath - Points to the device path. If NULL, then ignored.
|
||||
|
||||
Returns:
|
||||
TRUE - The device path has more than one instance
|
||||
FALSE - The device path is empty or contains only a single instance.
|
||||
|
||||
--*/
|
||||
{
|
||||
return IsDevicePathMultiInstance (DevicePath);
|
||||
}
|
||||
|
||||
/**
|
||||
Creates a copy of the current device path instance and returns a pointer to the next device path
|
||||
instance.
|
||||
|
||||
This function creates a new device node in a newly allocated buffer of size NodeLength and
|
||||
initializes the device path node header with NodeType and NodeSubType. The new device path node
|
||||
is returned.
|
||||
If NodeLength is smaller than a device path header, then NULL is returned.
|
||||
If there is not enough memory to allocate space for the new device path, then NULL is returned.
|
||||
The memory is allocated from EFI boot services memory. It is the responsibility of the caller to
|
||||
free the memory allocated.
|
||||
|
||||
@param NodeType The device node type for the new device node.
|
||||
@param NodeSubType The device node sub-type for the new device node.
|
||||
@param NodeLength The length of the new device node.
|
||||
|
||||
@return The new device path.
|
||||
|
||||
**/
|
||||
EFI_DEVICE_PATH_PROTOCOL *
|
||||
EFIAPI
|
||||
CreateDeviceNodeProtocolInterface (
|
||||
IN UINT8 NodeType,
|
||||
IN UINT8 NodeSubType,
|
||||
IN UINT16 NodeLength
|
||||
)
|
||||
/*++
|
||||
|
||||
Routine Description:
|
||||
Creates a device node
|
||||
|
||||
Arguments:
|
||||
NodeType - NodeType is the device node type (EFI_DEVICE_PATH.Type) for
|
||||
the new device node.
|
||||
NodeSubType - NodeSubType is the device node sub-type
|
||||
EFI_DEVICE_PATH.SubType) for the new device node.
|
||||
NodeLength - NodeLength is the length of the device node
|
||||
(EFI_DEVICE_PATH.Length) for the new device node.
|
||||
|
||||
Returns:
|
||||
Pointer - A pointer to the newly created device node.
|
||||
NULL - NodeLength is less than
|
||||
the size of the header or there was insufficient memory.
|
||||
|
||||
--*/
|
||||
{
|
||||
return CreateDeviceNode (NodeType, NodeSubType, NodeLength);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue