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1 | /** @file\r |
2 | Provides library functions for common SMBIOS operations. Only available to DXE\r | |
3 | and UEFI module types.\r | |
4 | \r | |
5 | \r | |
6 | Copyright (c) 2012, Apple Inc. All rights reserved.\r | |
7 | Portitions Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r | |
8 | This program and the accompanying materials are licensed and made available under\r | |
9 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
10 | The full text of the license may be found at\r | |
11 | http://opensource.org/licenses/bsd-license.php.\r | |
12 | \r | |
13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
15 | \r | |
16 | **/\r | |
17 | \r | |
18 | #include <PiDxe.h>\r | |
19 | #include <Library/BaseLib.h>\r | |
20 | #include <Library/BaseMemoryLib.h>\r | |
21 | #include <Library/DebugLib.h>\r | |
22 | #include <Library/MemoryAllocationLib.h>\r | |
23 | #include <Library/UefiBootServicesTableLib.h>\r | |
24 | #include <Library/UefiLib.h>\r | |
25 | #include <Library/SmbiosLib.h>\r | |
26 | \r | |
27 | \r | |
28 | EFI_SMBIOS_PROTOCOL *gSmbios = NULL;\r | |
29 | \r | |
30 | \r | |
31 | /**\r | |
32 | Create an initial SMBIOS Table from an array of SMBIOS_TEMPLATE_ENTRY\r | |
33 | entries. SMBIOS_TEMPLATE_ENTRY.NULL indicates the end of the table.\r | |
34 | \r | |
35 | @param Template Array of SMBIOS_TEMPLATE_ENTRY entries.\r | |
36 | \r | |
37 | @retval EFI_SUCCESS New SMBIOS tables were created.\r | |
38 | @retval EFI_OUT_OF_RESOURCES New SMBIOS tables were not created.\r | |
39 | **/\r | |
40 | EFI_STATUS\r | |
41 | EFIAPI\r | |
42 | SmbiosLibInitializeFromTemplate (\r | |
43 | IN SMBIOS_TEMPLATE_ENTRY *Template\r | |
44 | )\r | |
45 | {\r | |
46 | EFI_STATUS Status;\r | |
47 | UINTN Index;\r | |
48 | \r | |
49 | if (Template == NULL) {\r | |
50 | return EFI_INVALID_PARAMETER;\r | |
51 | }\r | |
52 | \r | |
53 | Status = EFI_SUCCESS;\r | |
54 | \r | |
55 | for (Index = 0; Template[Index].Entry != NULL; Index++) {\r | |
56 | Status = SmbiosLibCreateEntry (Template[Index].Entry, Template[Index].StringArray);\r | |
57 | }\r | |
58 | \r | |
59 | return Status;\r | |
60 | }\r | |
61 | \r | |
62 | \r | |
63 | \r | |
64 | /**\r | |
65 | Create SMBIOS record.\r | |
66 | \r | |
67 | Converts a fixed SMBIOS structure and an array of pointers to strings into\r | |
68 | an SMBIOS record where the strings are cat'ed on the end of the fixed record\r | |
69 | and terminated via a double NULL and add to SMBIOS table.\r | |
70 | \r | |
71 | SMBIOS_TABLE_TYPE32 gSmbiosType12 = {\r | |
72 | { EFI_SMBIOS_TYPE_SYSTEM_CONFIGURATION_OPTIONS, sizeof (SMBIOS_TABLE_TYPE12), 0 },\r | |
73 | 1 // StringCount\r | |
74 | };\r | |
75 | CHAR8 *gSmbiosType12Strings[] = {\r | |
76 | "Not Found",\r | |
77 | NULL\r | |
78 | };\r | |
79 | \r | |
80 | ...\r | |
81 | CreateSmbiosEntry (\r | |
82 | (EFI_SMBIOS_TABLE_HEADER*)&gSmbiosType12,\r | |
83 | gSmbiosType12Strings\r | |
84 | );\r | |
85 | \r | |
86 | @param SmbiosEntry Fixed SMBIOS structure\r | |
87 | @param StringArray Array of strings to convert to an SMBIOS string pack.\r | |
88 | NULL is OK.\r | |
89 | \r | |
90 | **/\r | |
91 | EFI_STATUS\r | |
92 | EFIAPI\r | |
93 | SmbiosLibCreateEntry (\r | |
94 | IN SMBIOS_STRUCTURE *SmbiosEntry,\r | |
95 | IN CHAR8 **StringArray\r | |
96 | )\r | |
97 | {\r | |
98 | EFI_STATUS Status;\r | |
99 | EFI_SMBIOS_HANDLE SmbiosHandle;\r | |
100 | EFI_SMBIOS_TABLE_HEADER *Record;\r | |
101 | UINTN Index;\r | |
102 | UINTN StringSize;\r | |
103 | UINTN Size;\r | |
104 | CHAR8 *Str;\r | |
105 | \r | |
106 | // Calculate the size of the fixed record and optional string pack\r | |
107 | Size = SmbiosEntry->Length;\r | |
108 | if (StringArray == NULL) {\r | |
109 | Size += 2; // Min string section is double null\r | |
110 | } else if (StringArray[0] == NULL) {\r | |
111 | Size += 2; // Min string section is double null\r | |
112 | } else {\r | |
113 | for (Index = 0; StringArray[Index] != NULL; Index++) {\r | |
114 | StringSize = AsciiStrSize (StringArray[Index]);\r | |
115 | Size += StringSize;\r | |
116 | }\r | |
117 | // Don't forget the terminating double null\r | |
118 | Size += 1;\r | |
119 | }\r | |
120 | \r | |
121 | // Copy over Template\r | |
122 | Record = (EFI_SMBIOS_TABLE_HEADER *)AllocateZeroPool (Size);\r | |
123 | if (Record == NULL) {\r | |
124 | return EFI_OUT_OF_RESOURCES;\r | |
125 | }\r | |
126 | CopyMem (Record, SmbiosEntry, SmbiosEntry->Length);\r | |
127 | \r | |
128 | if (StringArray != NULL) {\r | |
129 | // Append string pack\r | |
130 | Str = ((CHAR8 *)Record) + Record->Length;\r | |
131 | for (Index = 0; StringArray[Index] != NULL; Index++) {\r | |
132 | StringSize = AsciiStrSize (StringArray[Index]);\r | |
133 | CopyMem (Str, StringArray[Index], StringSize);\r | |
134 | Str += StringSize;\r | |
135 | }\r | |
136 | *Str = 0;\r | |
137 | }\r | |
138 | \r | |
139 | SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;\r | |
140 | Status = gSmbios->Add (\r | |
141 | gSmbios,\r | |
142 | gImageHandle,\r | |
143 | &SmbiosHandle,\r | |
144 | Record\r | |
145 | );\r | |
146 | \r | |
147 | FreePool (Record);\r | |
148 | return Status;\r | |
149 | }\r | |
150 | \r | |
151 | \r | |
152 | \r | |
153 | /**\r | |
154 | Update the string associated with an existing SMBIOS record.\r | |
155 | \r | |
156 | This function allows the update of specific SMBIOS strings. The number of valid strings for any\r | |
157 | SMBIOS record is defined by how many strings were present when Add() was called.\r | |
158 | \r | |
159 | @param[in] SmbiosHandle SMBIOS Handle of structure that will have its string updated.\r | |
160 | @param[in] StringNumber The non-zero string number of the string to update.\r | |
161 | @param[in] String Update the StringNumber string with String.\r | |
162 | \r | |
163 | @retval EFI_SUCCESS SmbiosHandle had its StringNumber String updated.\r | |
164 | @retval EFI_INVALID_PARAMETER SmbiosHandle does not exist. Or String is invalid.\r | |
165 | @retval EFI_UNSUPPORTED String was not added because it is longer than the SMBIOS Table supports.\r | |
166 | @retval EFI_NOT_FOUND The StringNumber.is not valid for this SMBIOS record.\r | |
167 | **/\r | |
168 | EFI_STATUS\r | |
169 | EFIAPI\r | |
170 | SmbiosLibUpdateString (\r | |
171 | IN EFI_SMBIOS_HANDLE SmbiosHandle,\r | |
172 | IN SMBIOS_TABLE_STRING StringNumber,\r | |
173 | IN CHAR8 *String\r | |
174 | )\r | |
175 | {\r | |
176 | UINTN StringIndex;\r | |
177 | \r | |
178 | if (String == NULL) {\r | |
179 | return EFI_INVALID_PARAMETER;\r | |
180 | }\r | |
181 | \r | |
182 | if (*String == '\0') {\r | |
183 | // A string with no data is not legal in SMBIOS\r | |
184 | return EFI_INVALID_PARAMETER;\r | |
185 | }\r | |
186 | \r | |
187 | StringIndex = StringNumber;\r | |
188 | return gSmbios->UpdateString (gSmbios, &SmbiosHandle, &StringIndex, String);\r | |
189 | }\r | |
190 | \r | |
191 | \r | |
192 | /**\r | |
193 | Update the string associated with an existing SMBIOS record.\r | |
194 | \r | |
195 | This function allows the update of specific SMBIOS strings. The number of valid strings for any\r | |
196 | SMBIOS record is defined by how many strings were present when Add() was called.\r | |
197 | \r | |
198 | @param[in] SmbiosHandle SMBIOS Handle of structure that will have its string updated.\r | |
199 | @param[in] StringNumber The non-zero string number of the string to update.\r | |
200 | @param[in] String Update the StringNumber string with String.\r | |
201 | \r | |
202 | @retval EFI_SUCCESS SmbiosHandle had its StringNumber String updated.\r | |
203 | @retval EFI_INVALID_PARAMETER SmbiosHandle does not exist. Or String is invalid.\r | |
204 | @retval EFI_UNSUPPORTED String was not added because it is longer than the SMBIOS Table supports.\r | |
205 | @retval EFI_NOT_FOUND The StringNumber.is not valid for this SMBIOS record.\r | |
206 | **/\r | |
207 | EFI_STATUS\r | |
208 | EFIAPI\r | |
209 | SmbiosLibUpdateUnicodeString (\r | |
210 | IN EFI_SMBIOS_HANDLE SmbiosHandle,\r | |
211 | IN SMBIOS_TABLE_STRING StringNumber,\r | |
212 | IN CHAR16 *String\r | |
213 | )\r | |
214 | {\r | |
215 | EFI_STATUS Status;\r | |
216 | UINTN StringIndex;\r | |
217 | CHAR8 *Ascii;\r | |
218 | \r | |
219 | if (String == NULL) {\r | |
220 | return EFI_INVALID_PARAMETER;\r | |
221 | }\r | |
222 | \r | |
223 | if (*String == '\0') {\r | |
224 | // A string with no data is not legal in SMBIOS\r | |
225 | return EFI_INVALID_PARAMETER;\r | |
226 | }\r | |
227 | \r | |
228 | Ascii = AllocateZeroPool (StrSize (String));\r | |
229 | if (Ascii == NULL) {\r | |
230 | return EFI_OUT_OF_RESOURCES;\r | |
231 | }\r | |
232 | UnicodeStrToAsciiStr (String, Ascii);\r | |
233 | \r | |
234 | StringIndex = StringNumber;\r | |
235 | Status = gSmbios->UpdateString (gSmbios, &SmbiosHandle, &StringIndex, Ascii);\r | |
236 | \r | |
237 | FreePool (Ascii);\r | |
238 | return Status;\r | |
239 | }\r | |
240 | \r | |
241 | \r | |
242 | /**\r | |
243 | Allow caller to read a specific SMBIOS string\r | |
244 | \r | |
245 | @param[in] Header SMBIOS record that contains the string.\r | |
246 | @param[in[ StringNumber Instance of SMBIOS string 1 - N.\r | |
247 | \r | |
248 | @retval NULL Instance of Type SMBIOS string was not found.\r | |
249 | @retval Other Pointer to matching SMBIOS string.\r | |
250 | **/\r | |
251 | CHAR8 *\r | |
252 | EFIAPI\r | |
253 | SmbiosLibReadString (\r | |
254 | IN SMBIOS_STRUCTURE *Header,\r | |
255 | IN EFI_SMBIOS_STRING StringNumber\r | |
256 | )\r | |
257 | {\r | |
258 | CHAR8 *Data;\r | |
259 | UINTN Match;\r | |
260 | \r | |
261 | Data = (CHAR8 *)Header + Header->Length;\r | |
262 | for (Match = 1;!(*Data == 0 && *(Data+1) == 0); ) {\r | |
263 | if (StringNumber == Match) {\r | |
264 | return Data;\r | |
265 | }\r | |
266 | Data++;\r | |
267 | if (*(Data - 1) == '\0') {\r | |
268 | Match++;\r | |
269 | }\r | |
270 | }\r | |
271 | \r | |
272 | return NULL;\r | |
273 | }\r | |
274 | \r | |
275 | \r | |
276 | /**\r | |
277 | Allow the caller to discover a specific SMBIOS entry, and patch it if necissary.\r | |
278 | \r | |
279 | @param[in] Type Type of the next SMBIOS record to return.\r | |
280 | @param[in[ Instance Instance of SMBIOS record 0 - N-1.\r | |
281 | @param[out] SmbiosHandle Returns SMBIOS handle for the matching record.\r | |
282 | \r | |
283 | @retval NULL Instance of Type SMBIOS record was not found.\r | |
284 | @retval Other Pointer to matching SMBIOS record.\r | |
285 | **/\r | |
286 | SMBIOS_STRUCTURE *\r | |
287 | EFIAPI\r | |
288 | SmbiosLibGetRecord (\r | |
289 | IN EFI_SMBIOS_TYPE Type,\r | |
290 | IN UINTN Instance,\r | |
291 | OUT EFI_SMBIOS_HANDLE *SmbiosHandle\r | |
292 | )\r | |
293 | {\r | |
294 | EFI_STATUS Status;\r | |
295 | EFI_SMBIOS_TABLE_HEADER *Record;\r | |
296 | UINTN Match;\r | |
297 | \r | |
298 | Match = 0;\r | |
299 | *SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;\r | |
300 | do {\r | |
301 | Status = gSmbios->GetNext (gSmbios, SmbiosHandle, &Type, &Record, NULL);\r | |
302 | if (!EFI_ERROR (Status)) {\r | |
303 | if (Match == Instance) {\r | |
304 | return (SMBIOS_STRUCTURE *)Record;\r | |
305 | }\r | |
306 | Match++;\r | |
307 | }\r | |
308 | } while (!EFI_ERROR (Status));\r | |
309 | \r | |
310 | return NULL;\r | |
311 | }\r | |
312 | \r | |
313 | \r | |
314 | /**\r | |
315 | Remove an SMBIOS record.\r | |
316 | \r | |
317 | This function removes an SMBIOS record using the handle specified by SmbiosHandle.\r | |
318 | \r | |
319 | @param[in] SmbiosHandle The handle of the SMBIOS record to remove.\r | |
320 | \r | |
321 | @retval EFI_SUCCESS SMBIOS record was removed.\r | |
322 | @retval EFI_INVALID_PARAMETER SmbiosHandle does not specify a valid SMBIOS record.\r | |
323 | **/\r | |
324 | EFI_STATUS\r | |
325 | EFIAPI\r | |
326 | SmbiosLibRemove (\r | |
327 | OUT EFI_SMBIOS_HANDLE SmbiosHandle\r | |
328 | )\r | |
329 | {\r | |
330 | return gSmbios->Remove (gSmbios, SmbiosHandle);\r | |
331 | }\r | |
332 | \r | |
333 | \r | |
334 | \r | |
335 | /**\r | |
336 | \r | |
337 | @param ImageHandle ImageHandle of the loaded driver.\r | |
338 | @param SystemTable Pointer to the EFI System Table.\r | |
339 | \r | |
340 | @retval EFI_SUCCESS Register successfully.\r | |
341 | @retval EFI_OUT_OF_RESOURCES No enough memory to register this handler.\r | |
342 | **/\r | |
343 | EFI_STATUS\r | |
344 | EFIAPI\r | |
345 | SmbiosLibConstructor (\r | |
346 | IN EFI_HANDLE ImageHandle,\r | |
347 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
348 | )\r | |
349 | {\r | |
350 | return gBS->LocateProtocol (&gEfiSmbiosProtocolGuid, NULL, (VOID **)&gSmbios);\r | |
351 | }\r | |
352 | \r |