1 files changed, 58 insertions, 0 deletions
diff --git a/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c b/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c
new file mode 100644
index 0000000000..72b1762f4c
--- /dev/null
+++ b/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c
@@ -0,0 +1,58 @@
+/** @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;
+}
+