1 files changed, 52 insertions, 0 deletions
diff --git a/roms/edk2/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c b/roms/edk2/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c
new file mode 100644
index 000000000..3b3472e5d
--- /dev/null
+++ b/roms/edk2/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c
@@ -0,0 +1,52 @@
+/** @file
+  Execute 32-bit code in Protected Mode.
+
+  Copyright (c) 2014 - 2016, 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;
+}
+