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/** @file
Execute 32-bit code in Protected Mode.
Copyright (c) 2014 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#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;
}
/**
Wrapper for a thunk to transition from compatibility mode to long mode to execute 64-bit code and then transit back to
compatibility mode.
@param[in] Function The 64bit code entry to be executed.
@param[in] Param1 The first parameter to pass to 64bit code.
@param[in] Param2 The second parameter to pass to 64bit code.
@return EFI_STATUS.
**/
EFI_STATUS
Execute64BitCode (
IN UINT64 Function,
IN UINT64 Param1,
IN UINT64 Param2
)
{
return EFI_UNSUPPORTED;
}
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