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1 | /** @file\r |
2 | Execute 32-bit code in Protected Mode.\r | |
3 | \r | |
4 | Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php.\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <Uefi.h>\r | |
16 | #include <FspEas.h>\r | |
17 | \r | |
18 | /**\r | |
19 | FSP API functions.\r | |
20 | \r | |
21 | @param[in] Param1 The first parameter to pass to 32bit code.\r | |
22 | @param[in] Param2 The second parameter to pass to 32bit code.\r | |
23 | \r | |
24 | @return EFI_STATUS.\r | |
25 | **/\r | |
26 | typedef\r | |
27 | EFI_STATUS\r | |
28 | (EFIAPI *FSP_FUNCTION) (\r | |
29 | IN VOID *Param1,\r | |
30 | IN VOID *Param2\r | |
31 | );\r | |
32 | \r | |
33 | /**\r | |
34 | Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to\r | |
35 | long mode.\r | |
36 | \r | |
37 | @param[in] Function The 32bit code entry to be executed.\r | |
38 | @param[in] Param1 The first parameter to pass to 32bit code.\r | |
39 | @param[in] Param2 The second parameter to pass to 32bit code.\r | |
40 | \r | |
41 | @return EFI_STATUS.\r | |
42 | **/\r | |
43 | EFI_STATUS\r | |
44 | Execute32BitCode (\r | |
45 | IN UINT64 Function,\r | |
46 | IN UINT64 Param1,\r | |
47 | IN UINT64 Param2\r | |
48 | )\r | |
49 | {\r | |
50 | FSP_FUNCTION EntryFunc;\r | |
51 | EFI_STATUS Status;\r | |
52 | \r | |
53 | EntryFunc = (FSP_FUNCTION) (UINTN) (Function);\r | |
54 | Status = EntryFunc ((VOID *)(UINTN)Param1, (VOID *)(UINTN)Param2);\r | |
55 | \r | |
56 | return Status;\r | |
57 | }\r | |
58 | \r |