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656419f9 RC |
1 | /** @file\r |
2 | This driver installs SMBIOS information for OVMF\r | |
3 | \r | |
4 | Copyright (c) 2020, Rebecca Cran <rebecca@bsdio.com>\r | |
5 | Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>\r | |
6 | Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>\r | |
7 | \r | |
8 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
9 | \r | |
10 | **/\r | |
11 | \r | |
12 | #include "SmbiosPlatformDxe.h"\r | |
13 | \r | |
14 | #define TYPE0_STRINGS \\r | |
15 | "EFI Development Kit II / OVMF\0" /* Vendor */ \\r | |
16 | "0.0.0\0" /* BiosVersion */ \\r | |
17 | "02/06/2015\0" /* BiosReleaseDate */\r | |
18 | //\r | |
19 | // Type definition and contents of the default Type 0 SMBIOS table.\r | |
20 | //\r | |
21 | #pragma pack(1)\r | |
22 | typedef struct {\r | |
ac0a286f MK |
23 | SMBIOS_TABLE_TYPE0 Base;\r |
24 | UINT8 Strings[sizeof (TYPE0_STRINGS)];\r | |
656419f9 RC |
25 | } OVMF_TYPE0;\r |
26 | #pragma pack()\r | |
27 | \r | |
ac0a286f | 28 | STATIC CONST OVMF_TYPE0 mOvmfDefaultType0 = {\r |
656419f9 RC |
29 | {\r |
30 | // SMBIOS_STRUCTURE Hdr\r | |
31 | {\r | |
32 | EFI_SMBIOS_TYPE_BIOS_INFORMATION, // UINT8 Type\r | |
33 | sizeof (SMBIOS_TABLE_TYPE0), // UINT8 Length\r | |
34 | },\r | |
ac0a286f MK |
35 | 1, // SMBIOS_TABLE_STRING Vendor\r |
36 | 2, // SMBIOS_TABLE_STRING BiosVersion\r | |
37 | 0xE800, // UINT16 BiosSegment\r | |
38 | 3, // SMBIOS_TABLE_STRING BiosReleaseDate\r | |
39 | 0, // UINT8 BiosSize\r | |
656419f9 | 40 | { // MISC_BIOS_CHARACTERISTICS BiosCharacteristics\r |
ac0a286f MK |
41 | 0, // Reserved :2\r |
42 | 0, // Unknown :1\r | |
43 | 1, // BiosCharacteristicsNotSupported :1\r | |
44 | // Remaining BiosCharacteristics bits left unset :60\r | |
656419f9 RC |
45 | },\r |
46 | { // BIOSCharacteristicsExtensionBytes[2]\r | |
ac0a286f MK |
47 | 0, // BiosReserved\r |
48 | 0x1C // SystemReserved = VirtualMachineSupported |\r | |
49 | // UefiSpecificationSupported |\r | |
50 | // TargetContentDistributionEnabled\r | |
656419f9 RC |
51 | },\r |
52 | 0, // UINT8 SystemBiosMajorRelease\r | |
53 | 0, // UINT8 SystemBiosMinorRelease\r | |
54 | 0xFF, // UINT8 EmbeddedControllerFirmwareMajorRelease\r | |
55 | 0xFF // UINT8 EmbeddedControllerFirmwareMinorRelease\r | |
56 | },\r | |
57 | // Text strings (unformatted area)\r | |
58 | TYPE0_STRINGS\r | |
59 | };\r | |
60 | \r | |
656419f9 RC |
61 | /**\r |
62 | Validates the SMBIOS entry point structure\r | |
63 | \r | |
64 | @param EntryPointStructure SMBIOS entry point structure\r | |
65 | \r | |
66 | @retval TRUE The entry point structure is valid\r | |
67 | @retval FALSE The entry point structure is not valid\r | |
68 | \r | |
69 | **/\r | |
70 | BOOLEAN\r | |
71 | IsEntryPointStructureValid (\r | |
72 | IN SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure\r | |
73 | )\r | |
74 | {\r | |
ac0a286f MK |
75 | UINTN Index;\r |
76 | UINT8 Length;\r | |
77 | UINT8 Checksum;\r | |
78 | UINT8 *BytePtr;\r | |
656419f9 | 79 | \r |
ac0a286f MK |
80 | BytePtr = (UINT8 *)EntryPointStructure;\r |
81 | Length = EntryPointStructure->EntryPointLength;\r | |
656419f9 RC |
82 | Checksum = 0;\r |
83 | \r | |
84 | for (Index = 0; Index < Length; Index++) {\r | |
ac0a286f | 85 | Checksum = Checksum + (UINT8)BytePtr[Index];\r |
656419f9 RC |
86 | }\r |
87 | \r | |
88 | if (Checksum != 0) {\r | |
89 | return FALSE;\r | |
90 | } else {\r | |
91 | return TRUE;\r | |
92 | }\r | |
93 | }\r | |
94 | \r | |
656419f9 RC |
95 | /**\r |
96 | Get SMBIOS record length.\r | |
97 | \r | |
98 | @param SmbiosTable SMBIOS pointer.\r | |
99 | \r | |
100 | **/\r | |
101 | UINTN\r | |
102 | SmbiosTableLength (\r | |
ac0a286f | 103 | IN SMBIOS_STRUCTURE_POINTER SmbiosTable\r |
656419f9 RC |
104 | )\r |
105 | {\r | |
106 | CHAR8 *AChar;\r | |
107 | UINTN Length;\r | |
108 | \r | |
109 | AChar = (CHAR8 *)(SmbiosTable.Raw + SmbiosTable.Hdr->Length);\r | |
110 | \r | |
111 | //\r | |
112 | // Each structure shall be terminated by a double-null (SMBIOS spec.7.1)\r | |
113 | //\r | |
114 | while ((*AChar != 0) || (*(AChar + 1) != 0)) {\r | |
ac0a286f | 115 | AChar++;\r |
656419f9 | 116 | }\r |
ac0a286f | 117 | \r |
656419f9 RC |
118 | Length = ((UINTN)AChar - (UINTN)SmbiosTable.Raw + 2);\r |
119 | \r | |
120 | return Length;\r | |
121 | }\r | |
122 | \r | |
656419f9 RC |
123 | /**\r |
124 | Install all structures from the given SMBIOS structures block\r | |
125 | \r | |
126 | @param Smbios SMBIOS protocol\r | |
127 | @param TableAddress SMBIOS tables starting address\r | |
128 | \r | |
129 | **/\r | |
130 | EFI_STATUS\r | |
131 | InstallAllStructures (\r | |
ac0a286f MK |
132 | IN EFI_SMBIOS_PROTOCOL *Smbios,\r |
133 | IN UINT8 *TableAddress\r | |
656419f9 RC |
134 | )\r |
135 | {\r | |
136 | EFI_STATUS Status;\r | |
137 | SMBIOS_STRUCTURE_POINTER SmbiosTable;\r | |
138 | EFI_SMBIOS_HANDLE SmbiosHandle;\r | |
139 | BOOLEAN NeedSmbiosType0;\r | |
140 | \r | |
141 | SmbiosTable.Raw = TableAddress;\r | |
142 | if (SmbiosTable.Raw == NULL) {\r | |
143 | return EFI_INVALID_PARAMETER;\r | |
144 | }\r | |
145 | \r | |
146 | NeedSmbiosType0 = TRUE;\r | |
147 | \r | |
148 | while (SmbiosTable.Hdr->Type != 127) {\r | |
149 | //\r | |
150 | // Log the SMBIOS data for this structure\r | |
151 | //\r | |
152 | SmbiosHandle = SmbiosTable.Hdr->Handle;\r | |
ac0a286f MK |
153 | Status = Smbios->Add (\r |
154 | Smbios,\r | |
155 | NULL,\r | |
156 | &SmbiosHandle,\r | |
157 | (EFI_SMBIOS_TABLE_HEADER *)SmbiosTable.Raw\r | |
158 | );\r | |
656419f9 RC |
159 | ASSERT_EFI_ERROR (Status);\r |
160 | \r | |
161 | if (SmbiosTable.Hdr->Type == 0) {\r | |
162 | NeedSmbiosType0 = FALSE;\r | |
163 | }\r | |
164 | \r | |
165 | //\r | |
166 | // Get the next structure address\r | |
167 | //\r | |
168 | SmbiosTable.Raw = (UINT8 *)(SmbiosTable.Raw + SmbiosTableLength (SmbiosTable));\r | |
169 | }\r | |
170 | \r | |
171 | if (NeedSmbiosType0) {\r | |
172 | //\r | |
173 | // Add OVMF default Type 0 (BIOS Information) table\r | |
174 | //\r | |
175 | SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;\r | |
ac0a286f MK |
176 | Status = Smbios->Add (\r |
177 | Smbios,\r | |
178 | NULL,\r | |
179 | &SmbiosHandle,\r | |
180 | (EFI_SMBIOS_TABLE_HEADER *)&mOvmfDefaultType0\r | |
181 | );\r | |
656419f9 RC |
182 | ASSERT_EFI_ERROR (Status);\r |
183 | }\r | |
184 | \r | |
185 | return EFI_SUCCESS;\r | |
186 | }\r | |
187 | \r | |
656419f9 RC |
188 | /**\r |
189 | Installs SMBIOS information for OVMF\r | |
190 | \r | |
191 | @param ImageHandle Module's image handle\r | |
192 | @param SystemTable Pointer of EFI_SYSTEM_TABLE\r | |
193 | \r | |
194 | @retval EFI_SUCCESS Smbios data successfully installed\r | |
195 | @retval Other Smbios data was not installed\r | |
196 | \r | |
197 | **/\r | |
198 | EFI_STATUS\r | |
199 | EFIAPI\r | |
200 | SmbiosTablePublishEntry (\r | |
ac0a286f MK |
201 | IN EFI_HANDLE ImageHandle,\r |
202 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
656419f9 RC |
203 | )\r |
204 | {\r | |
205 | EFI_STATUS Status;\r | |
206 | EFI_SMBIOS_PROTOCOL *Smbios;\r | |
207 | SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure;\r | |
208 | UINT8 *SmbiosTables = NULL;\r | |
209 | \r | |
210 | //\r | |
211 | // Find the SMBIOS protocol\r | |
212 | //\r | |
213 | Status = gBS->LocateProtocol (\r | |
214 | &gEfiSmbiosProtocolGuid,\r | |
215 | NULL,\r | |
ac0a286f | 216 | (VOID **)&Smbios\r |
656419f9 RC |
217 | );\r |
218 | if (EFI_ERROR (Status)) {\r | |
219 | return Status;\r | |
220 | }\r | |
221 | \r | |
222 | //\r | |
223 | // Add bhyve SMBIOS data\r | |
224 | //\r | |
225 | EntryPointStructure = GetBhyveSmbiosTables ();\r | |
226 | if (EntryPointStructure != NULL) {\r | |
ac0a286f | 227 | SmbiosTables = (UINT8 *)(UINTN)EntryPointStructure->TableAddress;\r |
656419f9 RC |
228 | }\r |
229 | \r | |
230 | if (SmbiosTables != NULL) {\r | |
231 | Status = InstallAllStructures (Smbios, SmbiosTables);\r | |
232 | \r | |
233 | //\r | |
234 | // Free SmbiosTables if allocated by Qemu (i.e., NOT by Xen):\r | |
235 | //\r | |
236 | if (EntryPointStructure == NULL) {\r | |
237 | FreePool (SmbiosTables);\r | |
238 | }\r | |
239 | }\r | |
240 | \r | |
241 | return Status;\r | |
242 | }\r |