86a2f3c439
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3893 Add Execute64BitCode to execute 64bit code from long mode directly in PEI 64bit. Cc: Chasel Chiu <chasel.chiu@intel.com> Cc: Nate DeSimone <nathaniel.l.desimone@intel.com> Cc: Star Zeng <star.zeng@intel.com> Cc: Ashraf Ali S <ashraf.ali.s@intel.com> Signed-off-by: Ted Kuo <ted.kuo@intel.com> Reviewed-by: Chasel Chiu <chasel.chiu@intel.com> Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
/** @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;
|
|
}
|
|
|