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a145e28d GS |
1 | /** @file\r |
2 | Find and extract QEMU SMBIOS data from fw_cfg.\r | |
3 | \r | |
4 | Copyright (C) 2014, Gabriel L. Somlo <somlo@cmu.edu>\r | |
5 | \r | |
b26f0cf9 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
a145e28d GS |
7 | **/\r |
8 | \r | |
7e25086a LE |
9 | #include <Library/DebugLib.h> // ASSERT_EFI_ERROR()\r |
10 | #include <Library/MemoryAllocationLib.h> // AllocatePool()\r | |
11 | #include <Library/PcdLib.h> // PcdGetBool()\r | |
12 | #include <Library/QemuFwCfgLib.h> // QemuFwCfgFindFile()\r | |
13 | \r | |
a145e28d | 14 | #include "SmbiosPlatformDxe.h"\r |
a145e28d GS |
15 | \r |
16 | /**\r | |
17 | Locates and extracts the QEMU SMBIOS data if present in fw_cfg\r | |
18 | \r | |
19 | @return Address of extracted QEMU SMBIOS data\r | |
20 | \r | |
21 | **/\r | |
22 | UINT8 *\r | |
23 | GetQemuSmbiosTables (\r | |
24 | VOID\r | |
25 | )\r | |
26 | {\r | |
92dc0bb2 LE |
27 | EFI_STATUS Status;\r |
28 | FIRMWARE_CONFIG_ITEM Tables;\r | |
29 | UINTN TablesSize;\r | |
a145e28d GS |
30 | UINT8 *QemuTables;\r |
31 | \r | |
92dc0bb2 | 32 | if (!PcdGetBool (PcdQemuSmbiosValidated)) {\r |
a145e28d GS |
33 | return NULL;\r |
34 | }\r | |
35 | \r | |
92dc0bb2 LE |
36 | Status = QemuFwCfgFindFile ("etc/smbios/smbios-tables", &Tables,\r |
37 | &TablesSize);\r | |
38 | ASSERT_EFI_ERROR (Status);\r | |
39 | ASSERT (TablesSize > 0);\r | |
a145e28d GS |
40 | \r |
41 | QemuTables = AllocatePool (TablesSize);\r | |
42 | if (QemuTables == NULL) {\r | |
43 | return NULL;\r | |
44 | }\r | |
45 | \r | |
46 | QemuFwCfgSelectItem (Tables);\r | |
47 | QemuFwCfgReadBytes (TablesSize, QemuTables);\r | |
48 | \r | |
49 | return QemuTables;\r | |
50 | }\r | |
ce270905 LE |
51 | \r |
52 | /**\r | |
53 | Installs SMBIOS information for OVMF\r | |
54 | \r | |
55 | @param ImageHandle Module's image handle\r | |
56 | @param SystemTable Pointer of EFI_SYSTEM_TABLE\r | |
57 | \r | |
58 | @retval EFI_SUCCESS Smbios data successfully installed\r | |
59 | @retval Other Smbios data was not installed\r | |
60 | \r | |
61 | **/\r | |
62 | EFI_STATUS\r | |
63 | EFIAPI\r | |
64 | SmbiosTablePublishEntry (\r | |
65 | IN EFI_HANDLE ImageHandle,\r | |
66 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
67 | )\r | |
68 | {\r | |
69 | EFI_STATUS Status;\r | |
70 | UINT8 *SmbiosTables;\r | |
71 | \r | |
72 | Status = EFI_NOT_FOUND;\r | |
73 | //\r | |
74 | // Add QEMU SMBIOS data if found\r | |
75 | //\r | |
76 | SmbiosTables = GetQemuSmbiosTables ();\r | |
77 | if (SmbiosTables != NULL) {\r | |
78 | Status = InstallAllStructures (SmbiosTables);\r | |
79 | FreePool (SmbiosTables);\r | |
80 | }\r | |
81 | \r | |
82 | return Status;\r | |
83 | }\r |