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1 | /** @file\r |
2 | SMM STM support\r | |
3 | \r | |
4 | Copyright (c) 2015 - 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 | #ifndef _SMM_STM_H_\r | |
16 | #define _SMM_STM_H_\r | |
17 | \r | |
18 | #include <Protocol/SmMonitorInit.h>\r | |
19 | \r | |
20 | /**\r | |
21 | \r | |
22 | Create 4G page table for STM.\r | |
23 | 2M PAE page table in X64 version.\r | |
24 | \r | |
25 | @param PageTableBase The page table base in MSEG\r | |
26 | \r | |
27 | **/\r | |
28 | VOID\r | |
29 | StmGen4GPageTable (\r | |
30 | IN UINTN PageTableBase\r | |
31 | );\r | |
32 | \r | |
33 | /**\r | |
34 | This is SMM exception handle.\r | |
35 | Consumed by STM when exception happen.\r | |
36 | \r | |
37 | @param Context STM protection exception stack frame\r | |
38 | \r | |
39 | @return the EBX value for STM reference.\r | |
40 | EBX = 0: resume SMM guest using register state found on exception stack.\r | |
41 | EBX = 1 to 0x0F: EBX contains a BIOS error code which the STM must record in the\r | |
42 | TXT.ERRORCODE register and subsequently reset the system via\r | |
43 | TXT.CMD.SYS_RESET. The value of the TXT.ERRORCODE register is calculated as\r | |
44 | follows: TXT.ERRORCODE = (EBX & 0x0F) | STM_CRASH_BIOS_PANIC\r | |
45 | EBX = 0x10 to 0xFFFFFFFF - reserved, do not use.\r | |
46 | \r | |
47 | **/\r | |
48 | UINT32\r | |
49 | EFIAPI\r | |
50 | SmmStmExceptionHandler (\r | |
51 | IN OUT STM_PROTECTION_EXCEPTION_STACK_FRAME Context\r | |
52 | );\r | |
53 | \r | |
54 | \r | |
55 | /**\r | |
56 | \r | |
57 | Get STM state.\r | |
58 | \r | |
59 | @return STM state\r | |
60 | \r | |
61 | **/\r | |
62 | EFI_SM_MONITOR_STATE\r | |
63 | EFIAPI\r | |
64 | GetMonitorState (\r | |
65 | VOID\r | |
66 | );\r | |
67 | \r | |
68 | /**\r | |
69 | \r | |
70 | Load STM image to MSEG.\r | |
71 | \r | |
72 | @param StmImage STM image\r | |
73 | @param StmImageSize STM image size\r | |
74 | \r | |
75 | @retval EFI_SUCCESS Load STM to MSEG successfully\r | |
76 | @retval EFI_BUFFER_TOO_SMALL MSEG is smaller than minimal requirement of STM image\r | |
77 | \r | |
78 | **/\r | |
79 | EFI_STATUS\r | |
80 | EFIAPI\r | |
81 | LoadMonitor (\r | |
82 | IN EFI_PHYSICAL_ADDRESS StmImage,\r | |
83 | IN UINTN StmImageSize\r | |
84 | );\r | |
85 | \r | |
86 | /**\r | |
87 | \r | |
88 | Add resources in list to database. Allocate new memory areas as needed.\r | |
89 | \r | |
90 | @param ResourceList A pointer to resource list to be added\r | |
91 | @param NumEntries Optional number of entries.\r | |
92 | If 0, list must be terminated by END_OF_RESOURCES.\r | |
93 | \r | |
94 | @retval EFI_SUCCESS If resources are added\r | |
95 | @retval EFI_INVALID_PARAMETER If nested procedure detected resource failer\r | |
96 | @retval EFI_OUT_OF_RESOURCES If nested procedure returned it and we cannot allocate more areas.\r | |
97 | \r | |
98 | **/\r | |
99 | EFI_STATUS\r | |
100 | EFIAPI\r | |
101 | AddPiResource (\r | |
102 | IN STM_RSC *ResourceList,\r | |
103 | IN UINT32 NumEntries OPTIONAL\r | |
104 | );\r | |
105 | \r | |
106 | /**\r | |
107 | \r | |
108 | Delete resources in list to database.\r | |
109 | \r | |
110 | @param ResourceList A pointer to resource list to be deleted\r | |
111 | NULL means delete all resources.\r | |
112 | @param NumEntries Optional number of entries.\r | |
113 | If 0, list must be terminated by END_OF_RESOURCES.\r | |
114 | \r | |
115 | @retval EFI_SUCCESS If resources are deleted\r | |
116 | @retval EFI_INVALID_PARAMETER If nested procedure detected resource failer\r | |
117 | \r | |
118 | **/\r | |
119 | EFI_STATUS\r | |
120 | EFIAPI\r | |
121 | DeletePiResource (\r | |
122 | IN STM_RSC *ResourceList,\r | |
123 | IN UINT32 NumEntries OPTIONAL\r | |
124 | );\r | |
125 | \r | |
126 | /**\r | |
127 | \r | |
128 | Get BIOS resources.\r | |
129 | \r | |
130 | @param ResourceList A pointer to resource list to be filled\r | |
131 | @param ResourceSize On input it means size of resource list input.\r | |
132 | On output it means size of resource list filled,\r | |
133 | or the size of resource list to be filled if size of too small.\r | |
134 | \r | |
135 | @retval EFI_SUCCESS If resources are returned.\r | |
136 | @retval EFI_BUFFER_TOO_SMALL If resource list buffer is too small to hold the whole resources.\r | |
137 | \r | |
138 | **/\r | |
139 | EFI_STATUS\r | |
140 | EFIAPI\r | |
141 | GetPiResource (\r | |
142 | OUT STM_RSC *ResourceList,\r | |
143 | IN OUT UINT32 *ResourceSize\r | |
144 | );\r | |
145 | \r | |
146 | /**\r | |
147 | This functin initialize STM configuration table.\r | |
148 | **/\r | |
149 | VOID\r | |
150 | StmSmmConfigurationTableInit (\r | |
151 | VOID\r | |
152 | );\r | |
153 | \r | |
154 | /**\r | |
155 | This function notify STM resource change.\r | |
156 | \r | |
157 | @param StmResource BIOS STM resource\r | |
158 | \r | |
159 | **/\r | |
160 | VOID\r | |
161 | NotifyStmResourceChange (\r | |
162 | IN VOID *StmResource\r | |
163 | );\r | |
164 | \r | |
165 | /**\r | |
166 | This function return BIOS STM resource.\r | |
167 | \r | |
168 | @return BIOS STM resource\r | |
169 | \r | |
170 | **/\r | |
171 | VOID *\r | |
172 | GetStmResource (\r | |
173 | VOID\r | |
174 | );\r | |
175 | \r | |
176 | #endif\r |