diff options
| -rw-r--r-- | OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.c | 76 | ||||
| -rw-r--r-- | OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.inf | 51 |
2 files changed, 127 insertions, 0 deletions
diff --git a/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.c b/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.c new file mode 100644 index 0000000000..0efe020eea --- /dev/null +++ b/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.c @@ -0,0 +1,76 @@ +/** @file
+
+ A hook-in library for MdeModulePkg/Universal/SmbiosDxe, in order to set
+ gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosVersion (and possibly other PCDs)
+ just before SmbiosDxe consumes them.
+
+ Copyright (C) 2013, 2015, Red Hat, Inc.
+ Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials are licensed and made available
+ under the terms and conditions of the BSD License which accompanies this
+ distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+ WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <IndustryStandard/SmBios.h>
+
+#include <Base.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+#include <Library/QemuFwCfgLib.h>
+
+typedef union {
+ SMBIOS_TABLE_ENTRY_POINT V2;
+} QEMU_SMBIOS_ANCHOR;
+
+RETURN_STATUS
+EFIAPI
+DetectSmbiosVersion (
+ VOID
+ )
+{
+ FIRMWARE_CONFIG_ITEM Anchor, Tables;
+ UINTN AnchorSize, TablesSize;
+ QEMU_SMBIOS_ANCHOR QemuAnchor;
+ UINT16 SmbiosVersion;
+
+ if (RETURN_ERROR (QemuFwCfgFindFile (
+ "etc/smbios/smbios-anchor", &Anchor, &AnchorSize)) ||
+ RETURN_ERROR (QemuFwCfgFindFile (
+ "etc/smbios/smbios-tables", &Tables, &TablesSize)) ||
+ TablesSize == 0) {
+ return RETURN_SUCCESS;
+ }
+
+ QemuFwCfgSelectItem (Anchor);
+
+ switch (AnchorSize) {
+ case sizeof QemuAnchor.V2:
+ QemuFwCfgReadBytes (AnchorSize, &QemuAnchor);
+
+ if (QemuAnchor.V2.MajorVersion != 2 ||
+ QemuAnchor.V2.TableLength != TablesSize ||
+ CompareMem (QemuAnchor.V2.AnchorString, "_SM_", 4) != 0 ||
+ CompareMem (QemuAnchor.V2.IntermediateAnchorString, "_DMI_", 5) != 0) {
+ return RETURN_SUCCESS;
+ }
+ SmbiosVersion = (UINT16)(QemuAnchor.V2.MajorVersion << 8 |
+ QemuAnchor.V2.MinorVersion);
+ break;
+
+ default:
+ return RETURN_SUCCESS;
+ }
+
+ DEBUG ((EFI_D_INFO, "%a: SMBIOS version from QEMU: 0x%04x\n", __FUNCTION__,
+ SmbiosVersion));
+ PcdSet16 (PcdSmbiosVersion, SmbiosVersion);
+
+ return RETURN_SUCCESS;
+}
diff --git a/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.inf b/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.inf new file mode 100644 index 0000000000..14c25c924e --- /dev/null +++ b/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.inf @@ -0,0 +1,51 @@ +## @file
+#
+# A hook-in library for MdeModulePkg/Universal/SmbiosDxe, in order to set
+# gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosVersion (and possibly other PCDs)
+# just before SmbiosDxe consumes them.
+#
+# Copyright (C) 2013, 2015, Red Hat, Inc.
+# Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
+#
+# This program and the accompanying materials are licensed and made available
+# under the terms and conditions of the BSD License which accompanies this
+# distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+# WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = DetectSmbiosVersionLib
+ FILE_GUID = 6c633bb2-ae33-49ae-9f89-b5aa999fe3ae
+ MODULE_TYPE = BASE
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = SmbiosVersionLib|DXE_DRIVER
+ CONSTRUCTOR = DetectSmbiosVersion
+
+#
+# The following information is for reference only and not required by the build
+# tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 ARM AARCH64
+#
+
+[Sources]
+ DetectSmbiosVersionLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ OvmfPkg/OvmfPkg.dec
+
+[LibraryClasses]
+ BaseMemoryLib
+ DebugLib
+ PcdLib
+ QemuFwCfgLib
+
+[Pcd]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosVersion
|