From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
 .../SmbiosVersionLib/DetectSmbiosVersionLib.c      | 105 +++++++++++++++++++++
 .../SmbiosVersionLib/DetectSmbiosVersionLib.inf    |  47 +++++++++
 2 files changed, 152 insertions(+)
 create mode 100644 roms/edk2/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.c
 create mode 100644 roms/edk2/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.inf

(limited to 'roms/edk2/OvmfPkg/Library/SmbiosVersionLib')

diff --git a/roms/edk2/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.c b/roms/edk2/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.c
new file mode 100644
index 000000000..4d2c23cfb
--- /dev/null
+++ b/roms/edk2/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.c
@@ -0,0 +1,105 @@
+/** @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>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#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;
+  SMBIOS_TABLE_3_0_ENTRY_POINT V3;
+} QEMU_SMBIOS_ANCHOR;
+
+RETURN_STATUS
+EFIAPI
+DetectSmbiosVersion (
+  VOID
+  )
+{
+  FIRMWARE_CONFIG_ITEM Anchor, Tables;
+  UINTN                AnchorSize, TablesSize;
+  QEMU_SMBIOS_ANCHOR   QemuAnchor;
+  UINT16               SmbiosVersion;
+  RETURN_STATUS        PcdStatus;
+
+  if (PcdGetBool (PcdQemuSmbiosValidated)) {
+    //
+    // Some other module, linked against this library, has already performed
+    // the task at hand. This should never happen, but it's easy to handle;
+    // just exit early.
+    //
+    return RETURN_SUCCESS;
+  }
+
+  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;
+
+  case sizeof QemuAnchor.V3:
+    QemuFwCfgReadBytes (AnchorSize, &QemuAnchor);
+
+    if (QemuAnchor.V3.MajorVersion != 3 ||
+        QemuAnchor.V3.TableMaximumSize != TablesSize ||
+        CompareMem (QemuAnchor.V3.AnchorString, "_SM3_", 5) != 0) {
+      return RETURN_SUCCESS;
+    }
+    SmbiosVersion = (UINT16)(QemuAnchor.V3.MajorVersion << 8 |
+                             QemuAnchor.V3.MinorVersion);
+
+    DEBUG ((DEBUG_INFO, "%a: SMBIOS 3.x DocRev from QEMU: 0x%02x\n",
+      __FUNCTION__, QemuAnchor.V3.DocRev));
+    PcdStatus = PcdSet8S (PcdSmbiosDocRev, QemuAnchor.V3.DocRev);
+    ASSERT_RETURN_ERROR (PcdStatus);
+    break;
+
+  default:
+    return RETURN_SUCCESS;
+  }
+
+  DEBUG ((DEBUG_INFO, "%a: SMBIOS version from QEMU: 0x%04x\n", __FUNCTION__,
+    SmbiosVersion));
+  PcdStatus = PcdSet16S (PcdSmbiosVersion, SmbiosVersion);
+  ASSERT_RETURN_ERROR (PcdStatus);
+
+  //
+  // SMBIOS platform drivers can now fetch and install
+  // "etc/smbios/smbios-tables" from QEMU.
+  //
+  PcdStatus = PcdSetBoolS (PcdQemuSmbiosValidated, TRUE);
+  ASSERT_RETURN_ERROR (PcdStatus);
+  return RETURN_SUCCESS;
+}
diff --git a/roms/edk2/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.inf b/roms/edk2/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.inf
new file mode 100644
index 000000000..8417498d9
--- /dev/null
+++ b/roms/edk2/OvmfPkg/Library/SmbiosVersionLib/DetectSmbiosVersionLib.inf
@@ -0,0 +1,47 @@
+## @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>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[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
+  gEfiMdeModulePkgTokenSpaceGuid.PcdSmbiosDocRev
+  gUefiOvmfPkgTokenSpaceGuid.PcdQemuSmbiosValidated
-- 
cgit