ipfvariable.c

来自「EFI BIOS是Intel提出的下一代的BIOS标准。这里上传的Edk源代码是」· C语言 代码 · 共 186 行

/*++

Copyright (c) 2004 - 2006, 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:

  IpfVariable.c

Abstract:

Revision History

--*/

#include "Variable.h"
#include "EsalRuntimeLib.h"

//
// Don't use module globals after the SetVirtualAddress map is signaled
//
extern ESAL_VARIABLE_GLOBAL *mVariableModuleGlobal;

SAL_RETURN_REGS
EsalVariableCommonEntry (
  IN  UINT64                                      FunctionId,
  IN  UINT64                                      Arg2,
  IN  UINT64                                      Arg3,
  IN  UINT64                                      Arg4,
  IN  UINT64                                      Arg5,
  IN  UINT64                                      Arg6,
  IN  UINT64                                      Arg7,
  IN  UINT64                                      Arg8,
  IN  SAL_EXTENDED_SAL_PROC                       ExtendedSalProc,
  IN  BOOLEAN                                     VirtualMode,
  IN  ESAL_VARIABLE_GLOBAL                        *Global
  )
/*++

Routine Description:

Arguments:

Returns:

--*/
{
  SAL_RETURN_REGS ReturnVal;

  switch (FunctionId) {
  case EsalGetVariable:
    ReturnVal.Status = GetVariable (
                        (CHAR16 *) Arg2,
                        (EFI_GUID *) Arg3,
                        (UINT32 *) Arg4,
                        (UINTN *) Arg5,
                        (VOID *) Arg6,
                        &Global->VariableBase[VirtualMode],
                        Global->FvbInstance
                        );
    return ReturnVal;

  case EsalGetNextVariableName:
    ReturnVal.Status = GetNextVariableName (
                        (UINTN *) Arg2,
                        (CHAR16 *) Arg3,
                        (EFI_GUID *) Arg4,
                        &Global->VariableBase[VirtualMode],
                        Global->FvbInstance
                        );
    return ReturnVal;

  case EsalSetVariable:
    ReturnVal.Status = SetVariable (
                        (CHAR16 *) Arg2,
                        (EFI_GUID *) Arg3,
                        (UINT32) Arg4,
                        (UINTN) Arg5,
                        (VOID *) Arg6,
                        &Global->VariableBase[VirtualMode],
                        (UINTN *) &Global->VolatileLastVariableOffset,
                        (UINTN *) &Global->NonVolatileLastVariableOffset,
                        Global->FvbInstance
                        );
    return ReturnVal;

#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
  case EsalQueryVariableInfo:
    ReturnVal.Status = QueryVariableInfo (
                        (UINT32) Arg2,
                        (UINT64 *) Arg3,
                        (UINT64 *) Arg4,
                        (UINT64 *) Arg5,
                        &Global->VariableBase[VirtualMode],
                        Global->FvbInstance
                        );
    return ReturnVal;
#endif

  default:
    ReturnVal.Status = EFI_SAL_INVALID_ARGUMENT;
    return ReturnVal;
  }
}

EFI_RUNTIMESERVICE
VOID
VariableClassAddressChangeEvent (
  IN EFI_EVENT        Event,
  IN VOID             *Context
  )
/*++

Routine Description:

Arguments:

Returns:

--*/
{
  EfiCopyMem (
    &mVariableModuleGlobal->VariableBase[Virtual],
    &mVariableModuleGlobal->VariableBase[Physical],
    sizeof (VARIABLE_GLOBAL)
    );

  EfiConvertPointer (
    EFI_INTERNAL_POINTER,
    (VOID **) &mVariableModuleGlobal->VariableBase[Virtual].NonVolatileVariableBase
    );
  EfiConvertPointer (
    EFI_INTERNAL_POINTER,
    (VOID **) &mVariableModuleGlobal->VariableBase[Virtual].VolatileVariableBase
    );
  EfiConvertPointer (EFI_INTERNAL_POINTER, (VOID **) &mVariableModuleGlobal);
}

EFI_STATUS
VariableServiceInitialize (
  IN EFI_HANDLE         ImageHandle,
  IN EFI_SYSTEM_TABLE   *SystemTable
  )
/*++

Routine Description:

Arguments:

Returns:

--*/
{
  EFI_STATUS  Status;

  Status = VariableCommonInitialize (ImageHandle, SystemTable);
  ASSERT_EFI_ERROR (Status);

  //
  //  Register All the Functions with Extended Sal.
  //
  RegisterEsalClass (
    &gEfiExtendedSalVariableServicesProtocolGuid,
    mVariableModuleGlobal,
    EsalVariableCommonEntry,
    EsalGetVariable,
    EsalVariableCommonEntry,
    EsalGetNextVariableName,
    EsalVariableCommonEntry,
    EsalSetVariable,
#if (EFI_SPECIFICATION_VERSION >= 0x00020000)
    EsalVariableCommonEntry,
    EsalQueryVariableInfo,
#endif
    NULL
    );

  return EFI_SUCCESS;
}