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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 | |
19 | \r | |
20 | /**\r | |
21 | Validates the SMBIOS entry point structure\r | |
22 | \r | |
23 | @param EntryPointStructure SMBIOS entry point structure\r | |
24 | \r | |
25 | @retval TRUE The entry point structure is valid\r | |
26 | @retval FALSE The entry point structure is not valid\r | |
27 | \r | |
28 | **/\r | |
29 | BOOLEAN\r | |
30 | IsEntryPointStructureValid (\r | |
31 | IN SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure\r | |
32 | )\r | |
33 | {\r | |
34 | UINTN Index;\r | |
35 | UINT8 Length;\r | |
36 | UINT8 Checksum;\r | |
37 | UINT8 *BytePtr;\r | |
38 | \r | |
39 | BytePtr = (UINT8*) EntryPointStructure;\r | |
40 | Length = EntryPointStructure->EntryPointLength;\r | |
41 | Checksum = 0;\r | |
42 | \r | |
43 | for (Index = 0; Index < Length; Index++) {\r | |
670a64e7 | 44 | Checksum = Checksum + (UINT8) BytePtr[Index];\r |
fb511817 | 45 | }\r |
46 | \r | |
47 | if (Checksum != 0) {\r | |
48 | return FALSE;\r | |
49 | } else {\r | |
50 | return TRUE;\r | |
51 | }\r | |
52 | }\r | |
53 | \r | |
54 | \r | |
55 | /**\r | |
56 | Get SMBIOS record length.\r | |
57 | \r | |
58 | @param SmbiosTable SMBIOS pointer.\r | |
59 | \r | |
60 | **/\r | |
61 | UINTN\r | |
62 | SmbiosTableLength (\r | |
63 | IN SMBIOS_STRUCTURE_POINTER SmbiosTable\r | |
64 | )\r | |
65 | {\r | |
66 | CHAR8 *AChar;\r | |
67 | UINTN Length;\r | |
68 | \r | |
69 | AChar = (CHAR8 *)(SmbiosTable.Raw + SmbiosTable.Hdr->Length);\r | |
70 | \r | |
71 | //\r | |
72 | // Each structure shall be terminated by a double-null (SMBIOS spec.7.1)\r | |
73 | //\r | |
74 | while ((*AChar != 0) || (*(AChar + 1) != 0)) {\r | |
75 | AChar ++;\r | |
76 | }\r | |
77 | Length = ((UINTN)AChar - (UINTN)SmbiosTable.Raw + 2);\r | |
78 | \r | |
79 | return Length;\r | |
80 | }\r | |
81 | \r | |
82 | \r | |
83 | /**\r | |
84 | Install all structures from the given SMBIOS structures block\r | |
85 | \r | |
86 | @param Smbios SMBIOS protocol\r | |
87 | @param EntryPointStructure SMBIOS entry point structures block\r | |
88 | \r | |
89 | **/\r | |
90 | EFI_STATUS\r | |
91 | InstallAllStructures (\r | |
92 | IN EFI_SMBIOS_PROTOCOL *Smbios,\r | |
93 | IN SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure\r | |
94 | )\r | |
95 | {\r | |
96 | EFI_STATUS Status;\r | |
97 | SMBIOS_STRUCTURE_POINTER SmbiosTable;\r | |
98 | EFI_SMBIOS_HANDLE SmbiosHandle;\r | |
99 | \r | |
100 | SmbiosTable.Raw = (UINT8*)(UINTN) EntryPointStructure->TableAddress;\r | |
101 | if (SmbiosTable.Raw == NULL) {\r | |
102 | return EFI_INVALID_PARAMETER;\r | |
103 | }\r | |
104 | \r | |
105 | while (SmbiosTable.Hdr->Type != 127) {\r | |
106 | //\r | |
107 | // Log the SMBIOS data for this structure\r | |
108 | //\r | |
b0a2498d | 109 | SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;\r |
fb511817 | 110 | Status = Smbios->Add (\r |
111 | Smbios,\r | |
112 | NULL,\r | |
113 | &SmbiosHandle,\r | |
114 | (EFI_SMBIOS_TABLE_HEADER*) SmbiosTable.Raw\r | |
115 | );\r | |
116 | ASSERT_EFI_ERROR (Status);\r | |
117 | \r | |
118 | //\r | |
119 | // Get the next structure address\r | |
120 | //\r | |
121 | SmbiosTable.Raw = (UINT8 *)(SmbiosTable.Raw + SmbiosTableLength (SmbiosTable));\r | |
122 | }\r | |
123 | \r | |
124 | return EFI_SUCCESS;\r | |
125 | }\r | |
126 | \r | |
127 | \r | |
128 | /**\r | |
129 | Installs SMBIOS information for OVMF\r | |
130 | \r | |
131 | @param ImageHandle Module's image handle\r | |
132 | @param SystemTable Pointer of EFI_SYSTEM_TABLE\r | |
133 | \r | |
134 | @retval EFI_SUCCESS Smbios data successfully installed\r | |
135 | @retval Other Smbios data was not installed\r | |
136 | \r | |
137 | **/\r | |
138 | EFI_STATUS\r | |
139 | EFIAPI\r | |
140 | SmbiosTablePublishEntry (\r | |
141 | IN EFI_HANDLE ImageHandle,\r | |
142 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
143 | )\r | |
144 | {\r | |
145 | EFI_STATUS Status;\r | |
146 | EFI_SMBIOS_PROTOCOL *Smbios;\r | |
147 | SMBIOS_TABLE_ENTRY_POINT *EntryPointStructure;\r | |
148 | \r | |
149 | //\r | |
150 | // Find the SMBIOS protocol\r | |
151 | //\r | |
152 | Status = gBS->LocateProtocol (\r | |
153 | &gEfiSmbiosProtocolGuid,\r | |
154 | NULL,\r | |
155 | (VOID**)&Smbios\r | |
156 | );\r | |
157 | if (EFI_ERROR (Status)) {\r | |
158 | return Status;\r | |
159 | }\r | |
160 | \r | |
161 | //\r | |
162 | // Add Xen SMBIOS data if found\r | |
163 | //\r | |
164 | EntryPointStructure = GetXenSmbiosTables ();\r | |
165 | if (EntryPointStructure != NULL) {\r | |
166 | Status = InstallAllStructures (Smbios, EntryPointStructure);\r | |
167 | }\r | |
168 | \r | |
169 | return Status;\r | |
170 | }\r |