55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/** @file
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Find and extract QEMU SMBIOS data from fw_cfg.
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Copyright (C) 2014, Gabriel L. Somlo <somlo@cmu.edu>
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This program and the accompanying materials are licensed and made
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available under the terms and conditions of the BSD License which
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accompanies this distribution. The full text of the license may
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be found at http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "SmbiosPlatformDxe.h"
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#include <Library/QemuFwCfgLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/PcdLib.h>
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/**
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Locates and extracts the QEMU SMBIOS data if present in fw_cfg
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@return Address of extracted QEMU SMBIOS data
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**/
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UINT8 *
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GetQemuSmbiosTables (
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VOID
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)
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{
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EFI_STATUS Status;
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FIRMWARE_CONFIG_ITEM Tables;
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UINTN TablesSize;
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UINT8 *QemuTables;
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if (!PcdGetBool (PcdQemuSmbiosValidated)) {
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return NULL;
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}
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Status = QemuFwCfgFindFile ("etc/smbios/smbios-tables", &Tables,
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&TablesSize);
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ASSERT_EFI_ERROR (Status);
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ASSERT (TablesSize > 0);
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QemuTables = AllocatePool (TablesSize);
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if (QemuTables == NULL) {
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return NULL;
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}
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QemuFwCfgSelectItem (Tables);
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QemuFwCfgReadBytes (TablesSize, QemuTables);
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return QemuTables;
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}
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