MdePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdePkg / Library / BaseLib / X64 / Non-existing.c

diff --git a/MdePkg/Library/BaseLib/X64/Non-existing.c b/MdePkg/Library/BaseLib/X64/Non-existing.c
index 9814cba9c977e96dc250781ceb9aa98ca33691c2..e00cb7eb5ad7b619f8af2d8fa4c4f12bf549c795 100644 (file)
--- a/MdePkg/Library/BaseLib/X64/Non-existing.c
+++ b/MdePkg/Library/BaseLib/X64/Non-existing.c
@@ -1,14 +1,8 @@
 /** @file\r
   Non-existing BaseLib functions on x64\r
 \r
-  Copyright (c) 2006 - 2008, Intel Corporation\r
-  All rights reserved. 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
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
+  SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \r
@@ -107,3 +101,47 @@ InternalX86DisablePaging32 (
   //\r
   ASSERT (FALSE);\r
 }\r
+\r
+\r
+/**\r
+  Enables the 64-bit paging mode on the CPU.\r
+\r
+  Enables the 64-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables\r
+  must be properly initialized prior to calling this service. This function\r
+  assumes the current execution mode is 32-bit protected mode with flat\r
+  descriptors. This function is only available on IA-32. After the 64-bit\r
+  paging mode is enabled, control is transferred to the function specified by\r
+  EntryPoint using the new stack specified by NewStack and passing in the\r
+  parameters specified by Context1 and Context2. Context1 and Context2 are\r
+  optional and may be 0. The function EntryPoint must never return.\r
+\r
+  @param  Cs          The 16-bit selector to load in the CS before EntryPoint\r
+                      is called. The descriptor in the GDT that this selector\r
+                      references must be setup for long mode.\r
+  @param  EntryPoint  The 64-bit virtual address of the function to call with\r
+                      the new stack after paging is enabled.\r
+  @param  Context1    The 64-bit virtual address of the context to pass into\r
+                      the EntryPoint function as the first parameter after\r
+                      paging is enabled.\r
+  @param  Context2    The 64-bit virtual address of the context to pass into\r
+                      the EntryPoint function as the second parameter after\r
+                      paging is enabled.\r
+  @param  NewStack    The 64-bit virtual address of the new stack to use for\r
+                      the EntryPoint function after paging is enabled.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+InternalX86EnablePaging64 (\r
+  IN      UINT16                    Cs,\r
+  IN      UINT64                    EntryPoint,\r
+  IN      UINT64                    Context1,  OPTIONAL\r
+  IN      UINT64                    Context2,  OPTIONAL\r
+  IN      UINT64                    NewStack\r
+  )\r
+{\r
+  //\r
+  // This function cannot work on x64 platform.\r
+  //\r
+  ASSERT (FALSE);\r
+}\r