f68af18ee9
Signed-off-by: niruiyu Reviewed-by: lgao4 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12553 6f19259b-4bc3-4df7-8a09-765794883524
273 lines
11 KiB
C
273 lines
11 KiB
C
/** @file
|
|
|
|
The internal header file includes the common header files, defines
|
|
internal structure and functions used by EmuVariable module.
|
|
|
|
Copyright (c) 2006 - 2011, 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 Size of the variable.
|
|
@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 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.
|
|
|
|
**/
|
|
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
|