Add IntelFsp2Pkg and IntelFsp2WrapperPkg.

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

diff --git a/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c b/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c
new file mode 100644 (file)
index 0000000..72b1762
--- /dev/null
+++ b/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c
@@ -0,0 +1,58 @@
+/** @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