projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 GS |
14 | /**\r |
| 15 | Locates and extracts the QEMU SMBIOS data if present in fw_cfg\r | |
| 16 | \r | |
| 17 | @return Address of extracted QEMU SMBIOS data\r | |
| 18 | \r | |
| 19 | **/\r | |
| 20 | UINT8 *\r | |
| 21 | GetQemuSmbiosTables (\r | |
| 22 | VOID\r | |
| 23 | )\r | |
| 24 | {\r | |
| ac0a286f MK |
25 | EFI_STATUS Status;\r |
| 26 | FIRMWARE_CONFIG_ITEM Tables;\r | |
| 27 | UINTN TablesSize;\r | |
| 28 | UINT8 *QemuTables;\r | |
| a145e28d | 29 | \r |
| 92dc0bb2 | 30 | if (!PcdGetBool (PcdQemuSmbiosValidated)) {\r |
| a145e28d GS |
31 | return NULL;\r |
| 32 | }\r | |
| 33 | \r | |
| ac0a286f MK |
34 | Status = QemuFwCfgFindFile (\r |
| 35 | "etc/smbios/smbios-tables",\r | |
| 36 | &Tables,\r | |
| 37 | &TablesSize\r | |
| 38 | );\r | |
| 92dc0bb2 LE |
39 | ASSERT_EFI_ERROR (Status);\r |
| 40 | ASSERT (TablesSize > 0);\r | |
| a145e28d GS |
41 | \r |
| 42 | QemuTables = AllocatePool (TablesSize);\r | |
| 43 | if (QemuTables == NULL) {\r | |
| 44 | return NULL;\r | |
| 45 | }\r | |
| 46 | \r | |
| 47 | QemuFwCfgSelectItem (Tables);\r | |
| 48 | QemuFwCfgReadBytes (TablesSize, QemuTables);\r | |
| 49 | \r | |
| 50 | return QemuTables;\r | |
| 51 | }\r |