diff options
Diffstat (limited to 'Core/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32')
-rw-r--r-- | Core/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/Core/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c b/Core/IntelFsp2WrapperPkg/Library/BaseFspWrapperApiLib/IA32/DispatchExecute.c new file mode 100644 index 0000000000..72b1762f4c --- /dev/null +++ b/Core/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;
+}
+
|