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fb511817 | 1 | /** @file\r |
2 | This driver installs SMBIOS information for OVMF\r | |
3 | \r | |
4 | Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>\r | |
5 | Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>\r | |
6 | \r | |
7 | This program and the accompanying materials\r | |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include "SmbiosPlatformDxe.h"\r | |
18 | \r | |
24256744 GS |
19 | //\r |
20 | // Type definition and contents of the default Type 0 SMBIOS table.\r | |
21 | //\r | |
22 | #pragma pack(1)\r | |
23 | typedef struct {\r | |
24 | SMBIOS_TABLE_TYPE0 Base;\r | |
25 | UINT8 Strings[];\r | |
26 | } OVMF_TYPE0;\r | |
27 | #pragma pack()\r | |
28 | \r | |
29 | STATIC CONST OVMF_TYPE0 mOvmfDefaultType0 = {\r | |
30 | {\r | |
31 | // SMBIOS_STRUCTURE Hdr\r | |
32 | {\r | |
33 | EFI_SMBIOS_TYPE_BIOS_INFORMATION, // UINT8 Type\r | |
34 | sizeof (SMBIOS_TABLE_TYPE0), // UINT8 Length\r | |
35 | },\r | |
36 | 1, // SMBIOS_TABLE_STRING Vendor\r | |
37 | 2, // SMBIOS_TABLE_STRING BiosVersion\r | |
38 | 0xE800,// UINT16 BiosSegment\r | |
39 | 3, // SMBIOS_TABLE_STRING BiosReleaseDate\r | |
40 | 0, // UINT8 BiosSize\r | |
41 | { // MISC_BIOS_CHARACTERISTICS BiosCharacteristics\r | |
42 | 0, // Reserved :2\r | |
43 | 0, // Unknown :1\r | |
44 | 1, // BiosCharacteristicsNotSupported :1\r | |
45 | // Remaining BiosCharacteristics bits left unset :60\r | |
46 | },\r | |
47 | { // BIOSCharacteristicsExtensionBytes[2]\r | |
48 | 0, // BiosReserved\r | |
49 | 0x1C // SystemReserved = VirtualMachineSupported |\r | |
50 | // UefiSpecificationSupported |\r | |
51 | // TargetContentDistributionEnabled\r | |
52 | },\r | |
53 | 0, // UINT8 SystemBiosMajorRelease\r | |
54 | 0, // UINT8 SystemBiosMinorRelease\r | |
55 | 0xFF, // UINT8 EmbeddedControllerFirmwareMajorRelease\r | |
56 | 0xFF // UINT8 EmbeddedControllerFirmwareMinorRelease\r | |
57 | },\r | |
58 | // Text strings (unformatted area)\r | |
59 | "EFI Development Kit II / OVMF\0" // Vendor\r | |
60 | "0.0.0\0" // BiosVersion\r | |
61 | "02/06/2015\0" // BiosReleaseDate\r | |
62 | };\r | |
63 | \r | |
fb511817 | 64 | \r |
65 | /**\r | |
66 | Validates the SMBIOS entry point structure\r | |
67 | \r | |
68 | @param EntryPointStructure SMBIOS entry point structure\r | |
69 | \r | |
70 | @retval TRUE The entry point structure is valid\r | |
71 | @retval FALSE The entry point structure is not valid\r | |
72 | \r | |
73 | **/\r | |
74 | BOOLEAN\r | |
75 | IsEntryPointStructureValid (\r | |
76 | IN SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure\r | |
77 | )\r | |
78 | {\r | |
79 | UINTN Index;\r | |
80 | UINT8 Length;\r | |
81 | UINT8 Checksum;\r | |
82 | UINT8 *BytePtr;\r | |
83 | \r | |
84 | BytePtr = (UINT8*) EntryPointStructure;\r | |
85 | Length = EntryPointStructure->EntryPointLength;\r | |
86 | Checksum = 0;\r | |
87 | \r | |
88 | for (Index = 0; Index < Length; Index++) {\r | |
670a64e7 | 89 | Checksum = Checksum + (UINT8) BytePtr[Index];\r |
fb511817 | 90 | }\r |
91 | \r | |
92 | if (Checksum != 0) {\r | |
93 | return FALSE;\r | |
94 | } else {\r | |
95 | return TRUE;\r | |
96 | }\r | |
97 | }\r | |
98 | \r | |
99 | \r | |
100 | /**\r | |
101 | Get SMBIOS record length.\r | |
102 | \r | |
103 | @param SmbiosTable SMBIOS pointer.\r | |
104 | \r | |
105 | **/\r | |
106 | UINTN\r | |
107 | SmbiosTableLength (\r | |
108 | IN SMBIOS_STRUCTURE_POINTER SmbiosTable\r | |
109 | )\r | |
110 | {\r | |
111 | CHAR8 *AChar;\r | |
112 | UINTN Length;\r | |
113 | \r | |
114 | AChar = (CHAR8 *)(SmbiosTable.Raw + SmbiosTable.Hdr->Length);\r | |
115 | \r | |
116 | //\r | |
117 | // Each structure shall be terminated by a double-null (SMBIOS spec.7.1)\r | |
118 | //\r | |
119 | while ((*AChar != 0) || (*(AChar + 1) != 0)) {\r | |
120 | AChar ++;\r | |
121 | }\r | |
122 | Length = ((UINTN)AChar - (UINTN)SmbiosTable.Raw + 2);\r | |
123 | \r | |
124 | return Length;\r | |
125 | }\r | |
126 | \r | |
127 | \r | |
128 | /**\r | |
129 | Install all structures from the given SMBIOS structures block\r | |
130 | \r | |
131 | @param Smbios SMBIOS protocol\r | |
a145e28d | 132 | @param TableAddress SMBIOS tables starting address\r |
fb511817 | 133 | \r |
134 | **/\r | |
135 | EFI_STATUS\r | |
136 | InstallAllStructures (\r | |
137 | IN EFI_SMBIOS_PROTOCOL *Smbios,\r | |
a145e28d | 138 | IN UINT8 *TableAddress\r |
fb511817 | 139 | )\r |
140 | {\r | |
141 | EFI_STATUS Status;\r | |
142 | SMBIOS_STRUCTURE_POINTER SmbiosTable;\r | |
143 | EFI_SMBIOS_HANDLE SmbiosHandle;\r | |
24256744 | 144 | BOOLEAN NeedSmbiosType0;\r |
fb511817 | 145 | \r |
a145e28d | 146 | SmbiosTable.Raw = TableAddress;\r |
fb511817 | 147 | if (SmbiosTable.Raw == NULL) {\r |
148 | return EFI_INVALID_PARAMETER;\r | |
149 | }\r | |
150 | \r | |
24256744 GS |
151 | NeedSmbiosType0 = TRUE;\r |
152 | \r | |
fb511817 | 153 | while (SmbiosTable.Hdr->Type != 127) {\r |
154 | //\r | |
155 | // Log the SMBIOS data for this structure\r | |
156 | //\r | |
6b23d767 | 157 | SmbiosHandle = SmbiosTable.Hdr->Handle;\r |
fb511817 | 158 | Status = Smbios->Add (\r |
159 | Smbios,\r | |
160 | NULL,\r | |
161 | &SmbiosHandle,\r | |
162 | (EFI_SMBIOS_TABLE_HEADER*) SmbiosTable.Raw\r | |
163 | );\r | |
164 | ASSERT_EFI_ERROR (Status);\r | |
165 | \r | |
24256744 GS |
166 | if (SmbiosTable.Hdr->Type == 0) {\r |
167 | NeedSmbiosType0 = FALSE;\r | |
168 | }\r | |
169 | \r | |
fb511817 | 170 | //\r |
171 | // Get the next structure address\r | |
172 | //\r | |
173 | SmbiosTable.Raw = (UINT8 *)(SmbiosTable.Raw + SmbiosTableLength (SmbiosTable));\r | |
174 | }\r | |
175 | \r | |
24256744 GS |
176 | if (NeedSmbiosType0) {\r |
177 | //\r | |
178 | // Add OVMF default Type 0 (BIOS Information) table\r | |
179 | //\r | |
180 | SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;\r | |
181 | Status = Smbios->Add (\r | |
182 | Smbios,\r | |
183 | NULL,\r | |
184 | &SmbiosHandle,\r | |
185 | (EFI_SMBIOS_TABLE_HEADER*) &mOvmfDefaultType0\r | |
186 | );\r | |
187 | ASSERT_EFI_ERROR (Status);\r | |
188 | }\r | |
189 | \r | |
fb511817 | 190 | return EFI_SUCCESS;\r |
191 | }\r | |
192 | \r | |
193 | \r | |
194 | /**\r | |
195 | Installs SMBIOS information for OVMF\r | |
196 | \r | |
197 | @param ImageHandle Module's image handle\r | |
198 | @param SystemTable Pointer of EFI_SYSTEM_TABLE\r | |
199 | \r | |
200 | @retval EFI_SUCCESS Smbios data successfully installed\r | |
201 | @retval Other Smbios data was not installed\r | |
202 | \r | |
203 | **/\r | |
204 | EFI_STATUS\r | |
205 | EFIAPI\r | |
206 | SmbiosTablePublishEntry (\r | |
207 | IN EFI_HANDLE ImageHandle,\r | |
208 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
209 | )\r | |
210 | {\r | |
211 | EFI_STATUS Status;\r | |
212 | EFI_SMBIOS_PROTOCOL *Smbios;\r | |
213 | SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure;\r | |
a145e28d | 214 | UINT8 *SmbiosTables;\r |
fb511817 | 215 | \r |
216 | //\r | |
217 | // Find the SMBIOS protocol\r | |
218 | //\r | |
219 | Status = gBS->LocateProtocol (\r | |
220 | &gEfiSmbiosProtocolGuid,\r | |
221 | NULL,\r | |
222 | (VOID**)&Smbios\r | |
223 | );\r | |
224 | if (EFI_ERROR (Status)) {\r | |
225 | return Status;\r | |
226 | }\r | |
227 | \r | |
228 | //\r | |
a145e28d | 229 | // Add Xen or QEMU SMBIOS data if found\r |
fb511817 | 230 | //\r |
231 | EntryPointStructure = GetXenSmbiosTables ();\r | |
232 | if (EntryPointStructure != NULL) {\r | |
a145e28d GS |
233 | SmbiosTables = (UINT8*)(UINTN)EntryPointStructure->TableAddress;\r |
234 | } else {\r | |
235 | SmbiosTables = GetQemuSmbiosTables ();\r | |
236 | }\r | |
237 | \r | |
238 | if (SmbiosTables != NULL) {\r | |
239 | Status = InstallAllStructures (Smbios, SmbiosTables);\r | |
240 | \r | |
241 | //\r | |
242 | // Free SmbiosTables if allocated by Qemu (i.e., NOT by Xen):\r | |
243 | //\r | |
244 | if (EntryPointStructure == NULL) {\r | |
245 | FreePool (SmbiosTables);\r | |
246 | }\r | |
fb511817 | 247 | }\r |
248 | \r | |
249 | return Status;\r | |
250 | }\r |