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/** @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;
}
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