/** @file | |
Execute 32-bit code in Protected Mode. | |
Copyright (c) 2014 - 2016, 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 <Uefi.h> | |
#include <FspEas.h> | |
/** | |
FSP API functions. | |
@param[in] Param1 The first parameter to pass to 32bit code. | |
@param[in] Param2 The second parameter to pass to 32bit code. | |
@return EFI_STATUS. | |
**/ | |
typedef | |
EFI_STATUS | |
(EFIAPI *FSP_FUNCTION) ( | |
IN VOID *Param1, | |
IN VOID *Param2 | |
); | |
/** | |
Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to | |
long mode. | |
@param[in] Function The 32bit code entry to be executed. | |
@param[in] Param1 The first parameter to pass to 32bit code. | |
@param[in] Param2 The second parameter to pass to 32bit code. | |
@return EFI_STATUS. | |
**/ | |
EFI_STATUS | |
Execute32BitCode ( | |
IN UINT64 Function, | |
IN UINT64 Param1, | |
IN UINT64 Param2 | |
) | |
{ | |
FSP_FUNCTION EntryFunc; | |
EFI_STATUS Status; | |
EntryFunc = (FSP_FUNCTION) (UINTN) (Function); | |
Status = EntryFunc ((VOID *)(UINTN)Param1, (VOID *)(UINTN)Param2); | |
return Status; | |
} | |