Add IntelFsp2Pkg and IntelFsp2WrapperPkg.

[mirror_edk2.git] / IntelFsp2WrapperPkg / Library / BaseFspWrapperApiLib / IA32 / DispatchExecute.c

/** @file\r
  Execute 32-bit code in Protected Mode.\r
\r
  Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php.\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#include <Uefi.h>\r
#include <FspEas.h>\r
\r
/**\r
  FSP API functions.\r
\r
  @param[in] Param1       The first parameter to pass to 32bit code.\r
  @param[in] Param2       The second parameter to pass to 32bit code.\r
\r
  @return EFI_STATUS.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *FSP_FUNCTION) (\r
  IN VOID *Param1,\r
  IN VOID *Param2\r
  );\r
\r
/**\r
  Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to\r
  long mode.\r
\r
  @param[in] Function     The 32bit code entry to be executed.\r
  @param[in] Param1       The first parameter to pass to 32bit code.\r
  @param[in] Param2       The second parameter to pass to 32bit code.\r
\r
  @return EFI_STATUS.\r
**/\r
EFI_STATUS\r
Execute32BitCode (\r
  IN UINT64      Function,\r
  IN UINT64      Param1,\r
  IN UINT64      Param2\r
  )\r
{\r
  FSP_FUNCTION               EntryFunc;\r
  EFI_STATUS                 Status;\r
\r
  EntryFunc = (FSP_FUNCTION) (UINTN) (Function);\r
  Status    = EntryFunc ((VOID *)(UINTN)Param1, (VOID *)(UINTN)Param2);\r
\r
  return Status;\r
}\r
\r