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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 - 2015, Intel Corporation. All rights reserved.<BR>\r | |
6 | \r | |
7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
8 | \r | |
9 | **/\r | |
10 | \r | |
11 | #include <IndustryStandard/SmBios.h> // SMBIOS_TABLE_TYPE0\r | |
12 | #include <Library/DebugLib.h> // ASSERT_EFI_ERROR()\r | |
13 | #include <Library/UefiBootServicesTableLib.h> // gBS\r | |
14 | #include <Protocol/Smbios.h> // EFI_SMBIOS_PROTOCOL\r | |
15 | \r | |
16 | #include "SmbiosPlatformDxe.h"\r | |
17 | \r | |
18 | #define TYPE0_STRINGS \\r | |
19 | "EFI Development Kit II / OVMF\0" /* Vendor */ \\r | |
20 | "0.0.0\0" /* BiosVersion */ \\r | |
21 | "02/06/2015\0" /* BiosReleaseDate */\r | |
22 | //\r | |
23 | // Type definition and contents of the default Type 0 SMBIOS table.\r | |
24 | //\r | |
25 | #pragma pack(1)\r | |
26 | typedef struct {\r | |
27 | SMBIOS_TABLE_TYPE0 Base;\r | |
28 | UINT8 Strings[sizeof (TYPE0_STRINGS)];\r | |
29 | } OVMF_TYPE0;\r | |
30 | #pragma pack()\r | |
31 | \r | |
32 | STATIC CONST OVMF_TYPE0 mOvmfDefaultType0 = {\r | |
33 | {\r | |
34 | // SMBIOS_STRUCTURE Hdr\r | |
35 | {\r | |
36 | EFI_SMBIOS_TYPE_BIOS_INFORMATION, // UINT8 Type\r | |
37 | sizeof (SMBIOS_TABLE_TYPE0), // UINT8 Length\r | |
38 | },\r | |
39 | 1, // SMBIOS_TABLE_STRING Vendor\r | |
40 | 2, // SMBIOS_TABLE_STRING BiosVersion\r | |
41 | 0xE800, // UINT16 BiosSegment\r | |
42 | 3, // SMBIOS_TABLE_STRING BiosReleaseDate\r | |
43 | 0, // UINT8 BiosSize\r | |
44 | { // MISC_BIOS_CHARACTERISTICS BiosCharacteristics\r | |
45 | 0, // Reserved :2\r | |
46 | 0, // Unknown :1\r | |
47 | 1, // BiosCharacteristicsNotSupported :1\r | |
48 | // Remaining BiosCharacteristics bits left unset :60\r | |
49 | },\r | |
50 | { // BIOSCharacteristicsExtensionBytes[2]\r | |
51 | 0, // BiosReserved\r | |
52 | 0x1C // SystemReserved = VirtualMachineSupported |\r | |
53 | // UefiSpecificationSupported |\r | |
54 | // TargetContentDistributionEnabled\r | |
55 | },\r | |
56 | 0, // UINT8 SystemBiosMajorRelease\r | |
57 | 0, // UINT8 SystemBiosMinorRelease\r | |
58 | 0xFF, // UINT8 EmbeddedControllerFirmwareMajorRelease\r | |
59 | 0xFF // UINT8 EmbeddedControllerFirmwareMinorRelease\r | |
60 | },\r | |
61 | // Text strings (unformatted area)\r | |
62 | TYPE0_STRINGS\r | |
63 | };\r | |
64 | \r | |
65 | /**\r | |
66 | Get SMBIOS record length.\r | |
67 | \r | |
68 | @param SmbiosTable SMBIOS pointer.\r | |
69 | \r | |
70 | **/\r | |
71 | UINTN\r | |
72 | SmbiosTableLength (\r | |
73 | IN SMBIOS_STRUCTURE_POINTER SmbiosTable\r | |
74 | )\r | |
75 | {\r | |
76 | CHAR8 *AChar;\r | |
77 | UINTN Length;\r | |
78 | \r | |
79 | AChar = (CHAR8 *)(SmbiosTable.Raw + SmbiosTable.Hdr->Length);\r | |
80 | \r | |
81 | //\r | |
82 | // Each structure shall be terminated by a double-null (SMBIOS spec.7.1)\r | |
83 | //\r | |
84 | while ((*AChar != 0) || (*(AChar + 1) != 0)) {\r | |
85 | AChar++;\r | |
86 | }\r | |
87 | \r | |
88 | Length = ((UINTN)AChar - (UINTN)SmbiosTable.Raw + 2);\r | |
89 | \r | |
90 | return Length;\r | |
91 | }\r | |
92 | \r | |
93 | /**\r | |
94 | Install all structures from the given SMBIOS structures block\r | |
95 | \r | |
96 | @param TableAddress SMBIOS tables starting address\r | |
97 | \r | |
98 | **/\r | |
99 | EFI_STATUS\r | |
100 | InstallAllStructures (\r | |
101 | IN UINT8 *TableAddress\r | |
102 | )\r | |
103 | {\r | |
104 | EFI_SMBIOS_PROTOCOL *Smbios;\r | |
105 | EFI_STATUS Status;\r | |
106 | SMBIOS_STRUCTURE_POINTER SmbiosTable;\r | |
107 | EFI_SMBIOS_HANDLE SmbiosHandle;\r | |
108 | BOOLEAN NeedSmbiosType0;\r | |
109 | \r | |
110 | //\r | |
111 | // Find the SMBIOS protocol\r | |
112 | //\r | |
113 | Status = gBS->LocateProtocol (\r | |
114 | &gEfiSmbiosProtocolGuid,\r | |
115 | NULL,\r | |
116 | (VOID **)&Smbios\r | |
117 | );\r | |
118 | if (EFI_ERROR (Status)) {\r | |
119 | return Status;\r | |
120 | }\r | |
121 | \r | |
122 | SmbiosTable.Raw = TableAddress;\r | |
123 | if (SmbiosTable.Raw == NULL) {\r | |
124 | return EFI_INVALID_PARAMETER;\r | |
125 | }\r | |
126 | \r | |
127 | NeedSmbiosType0 = TRUE;\r | |
128 | \r | |
129 | while (SmbiosTable.Hdr->Type != 127) {\r | |
130 | //\r | |
131 | // Log the SMBIOS data for this structure\r | |
132 | //\r | |
133 | SmbiosHandle = SmbiosTable.Hdr->Handle;\r | |
134 | Status = Smbios->Add (\r | |
135 | Smbios,\r | |
136 | NULL,\r | |
137 | &SmbiosHandle,\r | |
138 | (EFI_SMBIOS_TABLE_HEADER *)SmbiosTable.Raw\r | |
139 | );\r | |
140 | ASSERT_EFI_ERROR (Status);\r | |
141 | \r | |
142 | if (SmbiosTable.Hdr->Type == 0) {\r | |
143 | NeedSmbiosType0 = FALSE;\r | |
144 | }\r | |
145 | \r | |
146 | //\r | |
147 | // Get the next structure address\r | |
148 | //\r | |
149 | SmbiosTable.Raw = (UINT8 *)(SmbiosTable.Raw + SmbiosTableLength (SmbiosTable));\r | |
150 | }\r | |
151 | \r | |
152 | if (NeedSmbiosType0) {\r | |
153 | //\r | |
154 | // Add OVMF default Type 0 (BIOS Information) table\r | |
155 | //\r | |
156 | SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;\r | |
157 | Status = Smbios->Add (\r | |
158 | Smbios,\r | |
159 | NULL,\r | |
160 | &SmbiosHandle,\r | |
161 | (EFI_SMBIOS_TABLE_HEADER *)&mOvmfDefaultType0\r | |
162 | );\r | |
163 | ASSERT_EFI_ERROR (Status);\r | |
164 | }\r | |
165 | \r | |
166 | return EFI_SUCCESS;\r | |
167 | }\r |