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Revert "MdeModulePkg: Remove EmuVariableRuntimeDxe"

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This reverts commit 4a7aa8d34a.
This commit is contained in:
Tim Crawford
2020-02-14 07:46:14 -07:00
parent 71ce340b44
commit 5d853c79de
7 changed files with 2489 additions and 1 deletions
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5
MdeModulePkg/MdeModulePkg.dsc
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@@ -2,7 +2,7 @@
# EFI/PI Reference Module Package for All Architectures # EFI/PI Reference Module Package for All Architectures
# #
# (C) Copyright 2014 Hewlett-Packard Development Company, L.P.<BR> # (C) Copyright 2014 Hewlett-Packard Development Company, L.P.<BR>
# Copyright (c) 2007 - 2019, Intel Corporation. All rights reserved.<BR> # Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
# #
# SPDX-License-Identifier: BSD-2-Clause-Patent # SPDX-License-Identifier: BSD-2-Clause-Patent
# #
@@ -444,6 +444,9 @@
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableStandaloneMm.inf MdeModulePkg/Universal/Variable/RuntimeDxe/VariableStandaloneMm.inf
!endif !endif
[Components.IA32, Components.X64, Components.Ebc]
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf
[Components.IA32, Components.X64] [Components.IA32, Components.X64]
MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf MdeModulePkg/Universal/DebugSupportDxe/DebugSupportDxe.inf
MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.inf MdeModulePkg/Application/SmiHandlerProfileInfo/SmiHandlerProfileInfo.inf

1820
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c Normal file
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88
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.inf Normal file
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## @file
# Emulation Variable for EFI_RUNTIME_SERVICES.
#
# This module installs variable arch protocol and variable write arch protocol to provide
# four EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName and QueryVariableInfo.
#
# Copyright (c) 2006 - 2018, 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.
#
#
##
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = EmuVariableRuntimeDxe
MODULE_UNI_FILE = EmuVariableRuntimeDxe.uni
FILE_GUID = 02B01AD5-7E59-43e8-A6D8-238180613A5A
MODULE_TYPE = DXE_RUNTIME_DRIVER
VERSION_STRING = 1.0
ENTRY_POINT = VariableServiceInitialize
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64 EBC
#
[Sources]
InitVariable.c
EmuVariable.c
Variable.h
[Packages]
MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
[LibraryClasses]
BaseLib
UefiLib
UefiBootServicesTableLib
UefiDriverEntryPoint
UefiRuntimeLib
DebugLib
MemoryAllocationLib
BaseMemoryLib
HobLib
PcdLib
[Protocols]
gEfiVariableArchProtocolGuid ## PRODUCES
gEfiVariableWriteArchProtocolGuid ## PRODUCES
[Guids]
gEfiEventVirtualAddressChangeGuid ## CONSUMES ## Event
## SOMETIMES_CONSUMES ## Variable:L"PlatformLang"
## SOMETIMES_PRODUCES ## Variable:L"PlatformLang"
## SOMETIMES_CONSUMES ## Variable:L"Lang"
## SOMETIMES_PRODUCES ## Variable:L"Lang"
gEfiGlobalVariableGuid
## PRODUCES ## GUID # Signature of Variable store header
## CONSUMES ## GUID # Signature of Variable store header
## SOMETIMES_CONSUMES ## HOB
## SOMETIMES_PRODUCES ## SystemTable
gEfiVariableGuid
[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvStoreReserved ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdHwErrStorageSize ## CONSUMES
[FeaturePcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdVariableCollectStatistics ## CONSUMES # statistic the information of variable.
[Depex]
TRUE
[UserExtensions.TianoCore."ExtraFiles"]
EmuVariableRuntimeDxeExtra.uni

22
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxe.uni Normal file
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// /** @file
// Emulation Variable for EFI_RUNTIME_SERVICES.
//
// This module installs variable arch protocol and variable write arch protocol to provide
// four EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName and QueryVariableInfo.
//
// Copyright (c) 2006 - 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.
//
// **/
#string STR_MODULE_ABSTRACT #language en-US "Emulation Variable for EFI_RUNTIME_SERVICES"
#string STR_MODULE_DESCRIPTION #language en-US "This module installs variable arch protocol and variable write arch protocol to provide four EFI_RUNTIME_SERVICES: SetVariable, GetVariable, GetNextVariableName and QueryVariableInfo."

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MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariableRuntimeDxeExtra.uni Normal file
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// /** @file
// EmuVariableRuntimeDxe Localized Strings and Content
//
// Copyright (c) 2013 - 2018, 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.
//
// **/
#string STR_PROPERTIES_MODULE_NAME
#language en-US
"Emulation Variable DXE Driver"

259
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/InitVariable.c Normal file
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/** @file
Implment all four UEFI runtime variable services and
install variable architeture protocol.
Copyright (c) 2006 - 2018, 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 "Variable.h"
EFI_EVENT mVirtualAddressChangeEvent = NULL;
/**
This code finds variable in storage blocks (Volatile or Non-Volatile).
@param VariableName Name of Variable to be found.
@param VendorGuid Variable vendor GUID.
@param Attributes Attribute value of the variable found.
@param DataSize Size of Data found. If size is less than the
data, this value contains the required size.
@param Data The buffer to return the contents of the variable. May be NULL
with a zero DataSize in order to determine the size buffer needed.
@return EFI_INVALID_PARAMETER Invalid parameter
@return EFI_SUCCESS Find the specified variable
@return EFI_NOT_FOUND Not found
@return EFI_BUFFER_TO_SMALL DataSize is too small for the result
**/
EFI_STATUS
EFIAPI
RuntimeServiceGetVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
OUT UINT32 *Attributes OPTIONAL,
IN OUT UINTN *DataSize,
OUT VOID *Data OPTIONAL
)
{
return EmuGetVariable (
VariableName,
VendorGuid,
Attributes OPTIONAL,
DataSize,
Data,
&mVariableModuleGlobal->VariableGlobal[Physical]
);
}
/**
This code Finds the Next available variable.
@param VariableNameSize The size of the VariableName buffer. The size must be large enough to fit input
string supplied in VariableName buffer.
@param VariableName On input, supplies the last VariableName that was returned by GetNextVariableName().
On output, returns the Null-terminated Unicode string of the current variable.
@param VendorGuid On input, supplies the last VendorGuid that was returned by GetNextVariableName().
On output, returns the VendorGuid of the current variable.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_NOT_FOUND The next variable was not found.
@retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the result.
VariableNameSize has been updated with the size needed to complete the request.
@retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or VendorGuid is NULL.
@retval EFI_INVALID_PARAMETER The input values of VariableName and VendorGuid are not a name and
GUID of an existing variable.
@retval EFI_INVALID_PARAMETER Null-terminator is not found in the first VariableNameSize bytes of
the input VariableName buffer.
**/
EFI_STATUS
EFIAPI
RuntimeServiceGetNextVariableName (
IN OUT UINTN *VariableNameSize,
IN OUT CHAR16 *VariableName,
IN OUT EFI_GUID *VendorGuid
)
{
return EmuGetNextVariableName (
VariableNameSize,
VariableName,
VendorGuid,
&mVariableModuleGlobal->VariableGlobal[Physical]
);
}
/**
This code sets variable in storage blocks (Volatile or Non-Volatile).
@param VariableName Name of Variable to be found
@param VendorGuid Variable vendor GUID
@param Attributes Attribute value of the variable found
@param DataSize Size of Data found. If size is less than the
data, this value contains the required size.
@param Data Data pointer
@return EFI_INVALID_PARAMETER Invalid parameter
@return EFI_SUCCESS Set successfully
@return EFI_OUT_OF_RESOURCES Resource not enough to set variable
@return EFI_NOT_FOUND Not found
@return EFI_WRITE_PROTECTED Variable is read-only
**/
EFI_STATUS
EFIAPI
RuntimeServiceSetVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
IN UINT32 Attributes,
IN UINTN DataSize,
IN VOID *Data
)
{
return EmuSetVariable (
VariableName,
VendorGuid,
Attributes,
DataSize,
Data,
&mVariableModuleGlobal->VariableGlobal[Physical],
&mVariableModuleGlobal->VolatileLastVariableOffset,
&mVariableModuleGlobal->NonVolatileLastVariableOffset
);
}
/**
This code returns information about the EFI variables.
@param Attributes Attributes bitmask to specify the type of variables
on which to return information.
@param MaximumVariableStorageSize Pointer to the maximum size of the storage space available
for the EFI variables associated with the attributes specified.
@param RemainingVariableStorageSize Pointer to the remaining size of the storage space available
for EFI variables associated with the attributes specified.
@param MaximumVariableSize Pointer to the maximum size of an individual EFI variables
associated with the attributes specified.
@return EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.
@return EFI_SUCCESS Query successfully.
@return EFI_UNSUPPORTED The attribute is not supported on this platform.
**/
EFI_STATUS
EFIAPI
RuntimeServiceQueryVariableInfo (
IN UINT32 Attributes,
OUT UINT64 *MaximumVariableStorageSize,
OUT UINT64 *RemainingVariableStorageSize,
OUT UINT64 *MaximumVariableSize
)
{
return EmuQueryVariableInfo (
Attributes,
MaximumVariableStorageSize,
RemainingVariableStorageSize,
MaximumVariableSize,
&mVariableModuleGlobal->VariableGlobal[Physical]
);
}
/**
Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.
This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
It convers pointer to new virtual address.
@param Event Event whose notification function is being invoked.
@param Context Pointer to the notification function's context.
**/
VOID
EFIAPI
VariableClassAddressChangeEvent (
IN EFI_EVENT Event,
IN VOID *Context
)
{
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLangCodes);
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->LangCodes);
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLang);
EfiConvertPointer (
0x0,
(VOID **) &mVariableModuleGlobal->VariableGlobal[Physical].NonVolatileVariableBase
);
EfiConvertPointer (
0x0,
(VOID **) &mVariableModuleGlobal->VariableGlobal[Physical].VolatileVariableBase
);
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal);
}
/**
EmuVariable Driver main entry point. The Variable driver places the 4 EFI
runtime services in the EFI System Table and installs arch protocols
for variable read and write services being available. It also registers
notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS Variable service successfully initialized.
**/
EFI_STATUS
EFIAPI
VariableServiceInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_HANDLE NewHandle;
EFI_STATUS Status;
Status = VariableCommonInitialize (ImageHandle, SystemTable);
ASSERT_EFI_ERROR (Status);
SystemTable->RuntimeServices->GetVariable = RuntimeServiceGetVariable;
SystemTable->RuntimeServices->GetNextVariableName = RuntimeServiceGetNextVariableName;
SystemTable->RuntimeServices->SetVariable = RuntimeServiceSetVariable;
SystemTable->RuntimeServices->QueryVariableInfo = RuntimeServiceQueryVariableInfo;
//
// Now install the Variable Runtime Architectural Protocol on a new handle
//
NewHandle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces (
&NewHandle,
&gEfiVariableArchProtocolGuid,
NULL,
&gEfiVariableWriteArchProtocolGuid,
NULL,
NULL
);
ASSERT_EFI_ERROR (Status);
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
VariableClassAddressChangeEvent,
NULL,
&gEfiEventVirtualAddressChangeGuid,
&mVirtualAddressChangeEvent
);
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
}

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MdeModulePkg/Universal/Variable/EmuRuntimeDxe/Variable.h Normal file
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/** @file
The internal header file includes the common header files, defines
internal structure and functions used by EmuVariable module.
Copyright (c) 2006 - 2018, 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.
**/
#ifndef _VARIABLE_H_
#define _VARIABLE_H_
#include <Uefi.h>
#include <Protocol/VariableWrite.h>
#include <Protocol/Variable.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiRuntimeLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/BaseLib.h>
#include <Library/PcdLib.h>
#include <Library/HobLib.h>
#include <Guid/VariableFormat.h>
#include <Guid/GlobalVariable.h>
#include <Guid/EventGroup.h>
#define GET_VARIABLE_NAME_PTR(a) (CHAR16 *) ((UINTN) (a) + sizeof (VARIABLE_HEADER))
///
/// The size of a 3 character ISO639 language code.
///
#define ISO_639_2_ENTRY_SIZE 3
typedef enum {
Physical,
Virtual
} VARIABLE_POINTER_TYPE;
typedef struct {
VARIABLE_HEADER *CurrPtr;
VARIABLE_HEADER *EndPtr;
VARIABLE_HEADER *StartPtr;
BOOLEAN Volatile;
} VARIABLE_POINTER_TRACK;
typedef struct {
EFI_PHYSICAL_ADDRESS VolatileVariableBase;
EFI_PHYSICAL_ADDRESS NonVolatileVariableBase;
EFI_LOCK VariableServicesLock;
} VARIABLE_GLOBAL;
typedef struct {
VARIABLE_GLOBAL VariableGlobal[2];
UINTN VolatileLastVariableOffset;
UINTN NonVolatileLastVariableOffset;
UINTN CommonVariableTotalSize;
UINTN HwErrVariableTotalSize;
CHAR8 *PlatformLangCodes;
CHAR8 *LangCodes;
CHAR8 *PlatformLang;
CHAR8 Lang[ISO_639_2_ENTRY_SIZE + 1];
} ESAL_VARIABLE_GLOBAL;
///
/// Don't use module globals after the SetVirtualAddress map is signaled
///
extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;
/**
Initializes variable store area for non-volatile and volatile variable.
This function allocates and initializes memory space for global context of ESAL
variable service and variable store area for non-volatile and volatile variable.
@param ImageHandle The Image handle of this driver.
@param SystemTable The pointer of EFI_SYSTEM_TABLE.
@retval EFI_SUCCESS Function successfully executed.
@retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.
**/
EFI_STATUS
EFIAPI
VariableCommonInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
/**
Entry point of EmuVariable service module.
This function is the entry point of EmuVariable service module.
It registers all interfaces of Variable Services, initializes
variable store for non-volatile and volatile variables, and registers
notification function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
@param ImageHandle The Image handle of this driver.
@param SystemTable The pointer of EFI_SYSTEM_TABLE.
@retval EFI_SUCCESS Variable service successfully initialized.
**/
EFI_STATUS
EFIAPI
VariableServiceInitialize (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
);
/**
Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.
This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.
It convers pointer to new virtual address.
@param Event Event whose notification function is being invoked.
@param Context Pointer to the notification function's context.
**/
VOID
EFIAPI
VariableClassAddressChangeEvent (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
This code finds variable in storage blocks (Volatile or Non-Volatile).
@param VariableName A Null-terminated Unicode string that is the name of
the vendor's variable.
@param VendorGuid A unique identifier for the vendor.
@param Attributes If not NULL, a pointer to the memory location to return the
attributes bitmask for the variable.
@param DataSize Size of Data found. If size is less than the
data, this value contains the required size.
@param Data On input, the size in bytes of the return Data buffer.
On output, the size of data returned in Data.
@param Global Pointer to VARIABLE_GLOBAL structure
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_NOT_FOUND The variable was not found.
@retval EFI_BUFFER_TOO_SMALL DataSize is too small for the result. DataSize has
been updated with the size needed to complete the request.
@retval EFI_INVALID_PARAMETER VariableName or VendorGuid or DataSize is NULL.
**/
EFI_STATUS
EFIAPI
EmuGetVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
OUT UINT32 *Attributes OPTIONAL,
IN OUT UINTN *DataSize,
OUT VOID *Data,
IN VARIABLE_GLOBAL *Global
);
/**
This code finds the next available variable.
@param VariableNameSize The size of the VariableName buffer. The size must be large enough to fit input
string supplied in VariableName buffer.
@param VariableName On input, supplies the last VariableName that was returned by GetNextVariableName().
On output, returns the Null-terminated Unicode string of the current variable.
@param VendorGuid On input, supplies the last VendorGuid that was returned by GetNextVariableName().
On output, returns the VendorGuid of the current variable.
@param Global Pointer to VARIABLE_GLOBAL structure.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_NOT_FOUND The next variable was not found.
@retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the result.
VariableNameSize has been updated with the size needed to complete the request.
@retval EFI_INVALID_PARAMETER VariableNameSize or VariableName or VendorGuid is NULL.
@retval EFI_INVALID_PARAMETER The input values of VariableName and VendorGuid are not a name and
GUID of an existing variable.
@retval EFI_INVALID_PARAMETER Null-terminator is not found in the first VariableNameSize bytes of
the input VariableName buffer.
**/
EFI_STATUS
EFIAPI
EmuGetNextVariableName (
IN OUT UINTN *VariableNameSize,
IN OUT CHAR16 *VariableName,
IN OUT EFI_GUID *VendorGuid,
IN VARIABLE_GLOBAL *Global
);
/**
This code sets variable in storage blocks (Volatile or Non-Volatile).
@param VariableName A Null-terminated Unicode string that is the name of the vendor's
variable. Each VariableName is unique for each
VendorGuid. VariableName must contain 1 or more
Unicode characters. If VariableName is an empty Unicode
string, then EFI_INVALID_PARAMETER is returned.
@param VendorGuid A unique identifier for the vendor
@param Attributes Attributes bitmask to set for the variable
@param DataSize The size in bytes of the Data buffer. A size of zero causes the
variable to be deleted.
@param Data The contents for the variable
@param Global Pointer to VARIABLE_GLOBAL structure
@param VolatileOffset The offset of last volatile variable
@param NonVolatileOffset The offset of last non-volatile variable
@retval EFI_SUCCESS The firmware has successfully stored the variable and its data as
defined by the Attributes.
@retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied, or the
DataSize exceeds the maximum allowed, or VariableName is an empty
Unicode string, or VendorGuid is NULL.
@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the variable and its data.
@retval EFI_DEVICE_ERROR The variable could not be saved due to a hardware failure.
@retval EFI_WRITE_PROTECTED The variable in question is read-only or cannot be deleted.
@retval EFI_NOT_FOUND The variable trying to be updated or deleted was not found.
**/
EFI_STATUS
EFIAPI
EmuSetVariable (
IN CHAR16 *VariableName,
IN EFI_GUID *VendorGuid,
IN UINT32 Attributes,
IN UINTN DataSize,
IN VOID *Data,
IN VARIABLE_GLOBAL *Global,
IN UINTN *VolatileOffset,
IN UINTN *NonVolatileOffset
);
/**
This code returns information about the EFI variables.
@param Attributes Attributes bitmask to specify the type of variables
on which to return information.
@param MaximumVariableStorageSize On output the maximum size of the storage space available for
the EFI variables associated with the attributes specified.
@param RemainingVariableStorageSize Returns the remaining size of the storage space available for EFI
variables associated with the attributes specified.
@param MaximumVariableSize Returns the maximum size of an individual EFI variable
associated with the attributes specified.
@param Global Pointer to VARIABLE_GLOBAL structure.
@retval EFI_SUCCESS Valid answer returned.
@retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied
@retval EFI_UNSUPPORTED The attribute is not supported on this platform, and the
MaximumVariableStorageSize, RemainingVariableStorageSize,
MaximumVariableSize are undefined.
**/
EFI_STATUS
EFIAPI
EmuQueryVariableInfo (
IN UINT32 Attributes,
OUT UINT64 *MaximumVariableStorageSize,
OUT UINT64 *RemainingVariableStorageSize,
OUT UINT64 *MaximumVariableSize,
IN VARIABLE_GLOBAL *Global
);
#endif