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cf1d4549 JY |
1 | /** @file\r |
2 | Execute 32-bit code in Protected Mode.\r | |
3 | \r | |
86a2f3c4 | 4 | Copyright (c) 2014 - 2022, Intel Corporation. All rights reserved.<BR>\r |
512e23a3 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
cf1d4549 JY |
6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include <Uefi.h>\r | |
10 | #include <FspEas.h>\r | |
11 | \r | |
12 | /**\r | |
13 | FSP API functions.\r | |
14 | \r | |
15 | @param[in] Param1 The first parameter to pass to 32bit code.\r | |
16 | @param[in] Param2 The second parameter to pass to 32bit code.\r | |
17 | \r | |
18 | @return EFI_STATUS.\r | |
19 | **/\r | |
20 | typedef\r | |
21 | EFI_STATUS\r | |
7c7184e2 | 22 | (EFIAPI *FSP_FUNCTION)(\r |
cf1d4549 JY |
23 | IN VOID *Param1,\r |
24 | IN VOID *Param2\r | |
25 | );\r | |
26 | \r | |
27 | /**\r | |
28 | Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to\r | |
29 | long mode.\r | |
30 | \r | |
31 | @param[in] Function The 32bit code entry to be executed.\r | |
32 | @param[in] Param1 The first parameter to pass to 32bit code.\r | |
33 | @param[in] Param2 The second parameter to pass to 32bit code.\r | |
34 | \r | |
35 | @return EFI_STATUS.\r | |
36 | **/\r | |
37 | EFI_STATUS\r | |
38 | Execute32BitCode (\r | |
7c7184e2 MK |
39 | IN UINT64 Function,\r |
40 | IN UINT64 Param1,\r | |
41 | IN UINT64 Param2\r | |
cf1d4549 JY |
42 | )\r |
43 | {\r | |
7c7184e2 MK |
44 | FSP_FUNCTION EntryFunc;\r |
45 | EFI_STATUS Status;\r | |
cf1d4549 | 46 | \r |
7c7184e2 | 47 | EntryFunc = (FSP_FUNCTION)(UINTN)(Function);\r |
cf1d4549 JY |
48 | Status = EntryFunc ((VOID *)(UINTN)Param1, (VOID *)(UINTN)Param2);\r |
49 | \r | |
50 | return Status;\r | |
51 | }\r | |
86a2f3c4 TK |
52 | \r |
53 | /**\r | |
54 | Wrapper for a thunk to transition from compatibility mode to long mode to execute 64-bit code and then transit back to\r | |
55 | compatibility mode.\r | |
56 | \r | |
57 | @param[in] Function The 64bit code entry to be executed.\r | |
58 | @param[in] Param1 The first parameter to pass to 64bit code.\r | |
59 | @param[in] Param2 The second parameter to pass to 64bit code.\r | |
60 | \r | |
61 | @return EFI_STATUS.\r | |
62 | **/\r | |
63 | EFI_STATUS\r | |
64 | Execute64BitCode (\r | |
65 | IN UINT64 Function,\r | |
66 | IN UINT64 Param1,\r | |
67 | IN UINT64 Param2\r | |
68 | )\r | |
69 | {\r | |
70 | return EFI_UNSUPPORTED;\r | |
71 | }\r | |
72 | \r |