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79964ac8 | 1 | /** @file\r |
2 | This file declares SMM Base abstraction protocol.\r | |
8411f1c0 | 3 | This protocol is used to install SMM handlers for support of subsequent SMI/PMI activations. This\r |
3471dae2 | 4 | protocol is available on both IA-32 and Itanium based systems.\r |
8411f1c0 | 5 | \r |
6 | The EFI_SMM_BASE_PROTOCOL is a set of services that is exported by a processor device. It is\r | |
7 | a required protocol for the platform processor. This protocol can be used in both boot services and\r | |
8 | runtime mode. However, only the following member functions need to exist into runtime:\r | |
9 | - InSmm()\r | |
10 | - Communicate()\r | |
11 | This protocol is responsible for registering the handler services. The order in which the handlers are\r | |
12 | executed is prescribed only with respect to the MakeLast flag in the RegisterCallback()\r | |
13 | service. The driver exports these registration and unregistration services in boot services mode, but\r | |
14 | the registered handlers will execute through the preboot and runtime. The only way to change the\r | |
15 | behavior of a registered driver after ExitBootServices() has been invoked is to use some\r | |
16 | private communication mechanism with the driver to order it to quiesce. This model permits typical\r | |
17 | use cases, such as invoking the handler to enter ACPI mode, where the OS loader would make this\r | |
18 | call before boot services are terminated. On the other hand, handlers for services such as chipset\r | |
19 | workarounds for the century rollover in CMOS should provide commensurate services throughout\r | |
20 | preboot and OS runtime.\r | |
79964ac8 | 21 | \r |
79964ac8 | 22 | @par Revision Reference:\r |
23 | This Protocol is defined in Framework of EFI SMM Core Interface Spec\r | |
24 | Version 0.9.\r | |
25 | \r | |
ac9868ec | 26 | Copyright (c) 2007 - 2009, Intel Corporation\r |
27 | All rights reserved. This program and the accompanying materials\r | |
28 | are licensed and made available under the terms and conditions of the BSD License\r | |
29 | which accompanies this distribution. The full text of the license may be found at\r | |
30 | http://opensource.org/licenses/bsd-license.php\r | |
31 | \r | |
32 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
33 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
34 | \r | |
79964ac8 | 35 | **/\r |
36 | \r | |
37 | #ifndef _SMM_BASE_H_\r | |
38 | #define _SMM_BASE_H_\r | |
39 | \r | |
b80fbe85 | 40 | #include <FrameworkSmm.h>\r |
41 | \r | |
79964ac8 | 42 | #define EFI_SMM_BASE_PROTOCOL_GUID \\r |
43 | { \\r | |
44 | 0x1390954D, 0xda95, 0x4227, {0x93, 0x28, 0x72, 0x82, 0xc2, 0x17, 0xda, 0xa8 } \\r | |
45 | }\r | |
46 | \r | |
47 | typedef struct _EFI_SMM_BASE_PROTOCOL EFI_SMM_BASE_PROTOCOL;\r | |
48 | \r | |
49 | //\r | |
50 | // SMM Handler Definition\r | |
51 | //\r | |
52 | #define EFI_HANDLER_SUCCESS 0x0000\r | |
53 | #define EFI_HANDLER_CRITICAL_EXIT 0x0001\r | |
54 | #define EFI_HANDLER_SOURCE_QUIESCED 0x0002\r | |
55 | #define EFI_HANDLER_SOURCE_PENDING 0x0003\r | |
56 | \r | |
57 | /**\r | |
58 | Entry Point to Callback service\r | |
59 | \r | |
ac9868ec | 60 | @param[in] SmmImageHandle A handle allocated by the SMM infrastructure code\r |
61 | to uniquely designate a specific DXE SMM driver.\r | |
62 | @param[in] CommunicationBuffer A pointer to a collection of data in memory\r | |
63 | that will be conveyed from a non-SMM environment into an SMM environment.\r | |
64 | The buffer must be contiguous, physically mapped, and be a physical address.\r | |
65 | @param[in] SourceSize The size of the CommunicationBuffer.\r | |
79964ac8 | 66 | \r |
ac9868ec | 67 | @return Status code\r |
79964ac8 | 68 | \r |
69 | **/\r | |
70 | typedef\r | |
71 | EFI_STATUS\r | |
69686d56 | 72 | (EFIAPI *EFI_SMM_CALLBACK_ENTRY_POINT)(\r |
79964ac8 | 73 | IN EFI_HANDLE SmmImageHandle,\r |
74 | IN OUT VOID *CommunicationBuffer OPTIONAL,\r | |
75 | IN OUT UINTN *SourceSize OPTIONAL\r | |
76 | );\r | |
77 | \r | |
78 | //\r | |
79 | // SMM Base Protocol Definition\r | |
80 | //\r | |
81 | /**\r | |
82 | Register a given driver into SMRAM.This is the equivalent of performing\r | |
83 | the LoadImage/StartImage into System Management Mode.\r | |
84 | \r | |
ac9868ec | 85 | @param[in] This Protocol instance pointer.\r |
86 | @param[in] FilePath Location of the image to be installed as the handler.\r | |
87 | @param[in] SourceBuffer Optional source buffer in case of the image file\r | |
88 | being in memory.\r | |
89 | @param[in] SourceSize Size of the source image file, if in memory.\r | |
90 | @param[out] ImageHandle The handle that the base driver uses to decode \r | |
91 | the handler. Unique among SMM handlers only, \r | |
92 | not unique across DXE/EFI.\r | |
93 | @param[in] LegacyIA32Binary An optional parameter that details that the associated \r | |
94 | file is a real-mode IA-32 binary.\r | |
95 | \r | |
96 | @retval EFI_SUCCESS The operation was successful.\r | |
97 | @retval EFI_OUT_OF_RESOURCES There were no additional SMRAM resources to load the handler\r | |
98 | @retval EFI_UNSUPPORTED This platform does not support 16-bit handlers.\r | |
99 | @retval EFI_UNSUPPORTED In runtime.\r | |
100 | @retval EFI_INVALID_PARAMETER The handlers was not the correct image type\r | |
79964ac8 | 101 | \r |
102 | **/\r | |
103 | typedef\r | |
104 | EFI_STATUS\r | |
69686d56 | 105 | (EFIAPI *EFI_SMM_REGISTER_HANDLER)(\r |
79964ac8 | 106 | IN EFI_SMM_BASE_PROTOCOL *This,\r |
107 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
108 | IN VOID *SourceBuffer OPTIONAL,\r | |
109 | IN UINTN SourceSize,\r | |
110 | OUT EFI_HANDLE *ImageHandle,\r | |
111 | IN BOOLEAN LegacyIA32Binary OPTIONAL\r | |
ed66e1bc | 112 | );\r |
79964ac8 | 113 | \r |
114 | /**\r | |
700a7869 | 115 | Removes a handler from execution within SMRAM. This is the equivalent of performing\r |
116 | the UnloadImage in System Management Mode.\r | |
79964ac8 | 117 | \r |
ac9868ec | 118 | @param[in] This Protocol instance pointer.\r |
119 | @param[in] ImageHandle The handler to be removed.\r | |
79964ac8 | 120 | \r |
ac9868ec | 121 | @retval EFI_SUCCESS The operation was successful\r |
122 | @retval EFI_INVALID_PARAMETER The handler did not exist\r | |
123 | @retval EFI_UNSUPPORTED In runtime.\r | |
79964ac8 | 124 | \r |
125 | **/\r | |
126 | typedef\r | |
127 | EFI_STATUS\r | |
69686d56 | 128 | (EFIAPI *EFI_SMM_UNREGISTER_HANDLER)(\r |
79964ac8 | 129 | IN EFI_SMM_BASE_PROTOCOL *This,\r |
130 | IN EFI_HANDLE ImageHandle\r | |
ed66e1bc | 131 | );\r |
79964ac8 | 132 | \r |
133 | /**\r | |
134 | The SMM Inter-module Communicate Service Communicate() function\r | |
135 | provides a services to send/received messages from a registered\r | |
136 | EFI service. The BASE protocol driver is responsible for doing\r | |
700a7869 | 137 | any of the copies such that the data lives in boot-service-accessible RAM.\r |
79964ac8 | 138 | \r |
ac9868ec | 139 | @param[in] This Protocol instance pointer.\r |
140 | @param[in] ImageHandle The handle of the registered driver.\r | |
141 | @param[in,out] CommunicationBuffer Pointer to the buffer to convey into SMRAM.\r | |
142 | @param[in,out] SourceSize The size of the data buffer being passed in.\r | |
ebcfa880 | 143 | On exit, the size of data being returned.\r |
144 | Zero if the handler does not wish to reply with any data.\r | |
79964ac8 | 145 | \r |
ac9868ec | 146 | @retval EFI_SUCCESS The message was successfully posted\r |
147 | @retval EFI_INVALID_PARAMETER The buffer was NULL\r | |
79964ac8 | 148 | \r |
149 | **/\r | |
150 | typedef\r | |
151 | EFI_STATUS\r | |
69686d56 | 152 | (EFIAPI *EFI_SMM_COMMUNICATE)(\r |
79964ac8 | 153 | IN EFI_SMM_BASE_PROTOCOL *This,\r |
154 | IN EFI_HANDLE ImageHandle,\r | |
155 | IN OUT VOID *CommunicationBuffer,\r | |
156 | IN OUT UINTN *SourceSize\r | |
ed66e1bc | 157 | );\r |
79964ac8 | 158 | \r |
159 | /**\r | |
160 | Register a callback to execute within SMM.\r | |
700a7869 | 161 | This allows receipt of messages created with EFI_SMM_BASE_PROTOCOL.Communicate().\r |
79964ac8 | 162 | \r |
ac9868ec | 163 | @param[in] This Protocol instance pointer.\r |
164 | @param[in] SmmImageHandle Handle of the callback service.\r | |
165 | @param[in] CallbackAddress Address of the callback service.\r | |
166 | @param[in] MakeLast If present, will stipulate that the handler is posted to \r | |
167 | be executed last in the dispatch table.\r | |
168 | @param[in] FloatingPointSave This is an optional parameter which informs the\r | |
169 | EFI_SMM_ACCESS_PROTOCOL Driver core if it needs to save\r | |
170 | the floating point register state. If any of the handlers\r | |
171 | require this, then the state will be saved for all of the handlers.\r | |
172 | \r | |
173 | @retval EFI_SUCCESS The operation was successful\r | |
174 | @retval EFI_OUT_OF_RESOURCES Not enough space in the dispatch queue\r | |
175 | @retval EFI_UNSUPPORTED In runtime.\r | |
176 | @retval EFI_UNSUPPORTED The caller is not in SMM.\r | |
79964ac8 | 177 | \r |
178 | **/\r | |
179 | typedef\r | |
180 | EFI_STATUS\r | |
69686d56 | 181 | (EFIAPI *EFI_SMM_CALLBACK_SERVICE)(\r |
79964ac8 | 182 | IN EFI_SMM_BASE_PROTOCOL *This,\r |
183 | IN EFI_HANDLE SmmImageHandle,\r | |
184 | IN EFI_SMM_CALLBACK_ENTRY_POINT CallbackAddress,\r | |
185 | IN BOOLEAN MakeLast OPTIONAL,\r | |
186 | IN BOOLEAN FloatingPointSave OPTIONAL\r | |
ed66e1bc | 187 | );\r |
79964ac8 | 188 | \r |
189 | /**\r | |
190 | The SmmAllocatePool() function allocates a memory region of Size bytes from memory of\r | |
191 | type PoolType and returns the address of the allocated memory in the location referenced\r | |
192 | by Buffer. This function allocates pages from EFI SMRAM Memory as needed to grow the\r | |
193 | requested pool type. All allocations are eight-byte aligned.\r | |
194 | \r | |
ac9868ec | 195 | @param[in] This Protocol instance pointer.\r |
196 | @param[in] PoolType The type of pool to allocate.\r | |
197 | The only supported type is EfiRuntimeServicesData;\r | |
198 | the interface will internally map this runtime request to \r | |
199 | SMRAM for IA-32 and leave as this type for the Itanium \r | |
200 | processor family. Other types can be ignored.\r | |
201 | @param[in] Size The number of bytes to allocate from the pool.\r | |
202 | @param[out] Buffer A pointer to a pointer to the allocated buffer if the call\r | |
203 | succeeds; undefined otherwise.\r | |
204 | \r | |
205 | @retval EFI_SUCCESS The requested number of bytes was allocated.\r | |
206 | @retval EFI_OUT_OF_RESOURCES The pool requested could not be allocated.\r | |
ac9868ec | 207 | @retval EFI_UNSUPPORTED In runtime.\r |
79964ac8 | 208 | \r |
209 | **/\r | |
210 | typedef\r | |
211 | EFI_STATUS\r | |
69686d56 | 212 | (EFIAPI *EFI_SMM_ALLOCATE_POOL)(\r |
79964ac8 | 213 | IN EFI_SMM_BASE_PROTOCOL *This,\r |
214 | IN EFI_MEMORY_TYPE PoolType,\r | |
215 | IN UINTN Size,\r | |
216 | OUT VOID **Buffer\r | |
ed66e1bc | 217 | );\r |
79964ac8 | 218 | \r |
219 | /**\r | |
220 | The SmmFreePool() function returns the memory specified by Buffer to the system.\r | |
221 | On return, the memory's type is EFI SMRAM Memory. The Buffer that is freed must\r | |
222 | have been allocated by SmmAllocatePool().\r | |
223 | \r | |
ac9868ec | 224 | @param[in] This Protocol instance pointer.\r |
225 | @param[in] Buffer Pointer to the buffer allocation.\r | |
79964ac8 | 226 | \r |
ac9868ec | 227 | @retval EFI_SUCCESS The memory was returned to the system.\r |
228 | @retval EFI_INVALID_PARAMETER Buffer was invalid.\r | |
229 | @retval EFI_UNSUPPORTED In runtime.\r | |
79964ac8 | 230 | \r |
231 | **/\r | |
232 | typedef\r | |
233 | EFI_STATUS\r | |
69686d56 | 234 | (EFIAPI *EFI_SMM_FREE_POOL)(\r |
79964ac8 | 235 | IN EFI_SMM_BASE_PROTOCOL *This,\r |
236 | IN VOID *Buffer\r | |
ed66e1bc | 237 | );\r |
79964ac8 | 238 | \r |
239 | /**\r | |
240 | This routine tells caller if execution context is SMM or not.\r | |
241 | \r | |
ac9868ec | 242 | @param[in] This Protocol instance pointer.\r |
243 | @param[out] InSmm Whether the caller is inside SMM for IA-32\r | |
244 | or servicing a PMI for the Itanium processor\r | |
ebcfa880 | 245 | family.\r |
79964ac8 | 246 | \r |
ac9868ec | 247 | @retval EFI_SUCCESS The operation was successful\r |
248 | @retval EFI_INVALID_PARAMETER InSmm was NULL.\r | |
79964ac8 | 249 | \r |
250 | **/\r | |
251 | typedef\r | |
252 | EFI_STATUS\r | |
69686d56 | 253 | (EFIAPI *EFI_SMM_INSIDE_OUT)(\r |
79964ac8 | 254 | IN EFI_SMM_BASE_PROTOCOL *This,\r |
255 | OUT BOOLEAN *InSmm\r | |
ed66e1bc | 256 | );\r |
79964ac8 | 257 | \r |
258 | /**\r | |
259 | The GetSmstLocation() function returns the locatin of the System Management\r | |
260 | Service Table. The use of the API is such that a driver can discover the\r | |
261 | location of the SMST in its entry point and then cache it in some driver\r | |
262 | global variable so that the SMST can be invoked in subsequent callbacks.\r | |
263 | \r | |
ac9868ec | 264 | @param[in] This Protocol instance pointer.\r |
265 | @param[in] Smst Pointer to the SMST.\r | |
79964ac8 | 266 | \r |
ac9868ec | 267 | @retval EFI_SUCCESS The operation was successful\r |
268 | @retval EFI_INVALID_PARAMETER Smst was invalid.\r | |
269 | @retval EFI_UNSUPPORTED Not in SMM.\r | |
79964ac8 | 270 | \r |
271 | **/\r | |
272 | typedef\r | |
273 | EFI_STATUS\r | |
69686d56 | 274 | (EFIAPI *EFI_SMM_GET_SMST_LOCATION)(\r |
79964ac8 | 275 | IN EFI_SMM_BASE_PROTOCOL *This,\r |
276 | IN OUT EFI_SMM_SYSTEM_TABLE **Smst\r | |
ed66e1bc | 277 | );\r |
79964ac8 | 278 | \r |
ebcfa880 | 279 | ///\r |
280 | /// This protocol is used to install SMM handlers for support of subsequent SMI/PMI\r | |
281 | /// activations. This protocol is available on both IA-32 and Itanium-based systems.\r | |
282 | ///\r | |
79964ac8 | 283 | struct _EFI_SMM_BASE_PROTOCOL {\r |
284 | EFI_SMM_REGISTER_HANDLER Register;\r | |
285 | EFI_SMM_UNREGISTER_HANDLER UnRegister;\r | |
286 | EFI_SMM_COMMUNICATE Communicate;\r | |
287 | EFI_SMM_CALLBACK_SERVICE RegisterCallback;\r | |
288 | EFI_SMM_INSIDE_OUT InSmm;\r | |
289 | EFI_SMM_ALLOCATE_POOL SmmAllocatePool;\r | |
290 | EFI_SMM_FREE_POOL SmmFreePool;\r | |
291 | EFI_SMM_GET_SMST_LOCATION GetSmstLocation;\r | |
292 | };\r | |
293 | \r | |
294 | extern EFI_GUID gEfiSmmBaseProtocolGuid;\r | |
295 | \r | |
296 | #endif\r |