OvmfPkg/SmbiosPlatformDxe: Add OVMF SMBIOS driver (with Xen support)

Locates Xen SMBIOS data and installs it using the SMBIOS
protocol.

Signed-off-by: gavinguan
Reviewed-by: Andrei Warkentin <andreiw@motorola.com>
Signed-off-by: jljusten

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12125 6f19259b-4bc3-4df7-8a09-765794883524

4 files changed, 346 insertions, 0 deletions

diff --git a/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.c b/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.c
new file mode 100644
index 0000000..dc84c3a
--- /dev/null
+++ b/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.c
@@ -0,0 +1,170 @@
+/** @file

+  This driver installs SMBIOS information for OVMF

+

+  Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>

+  Copyright (c) 2011, 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 "SmbiosPlatformDxe.h"

+

+

+/**

+  Validates the SMBIOS entry point structure

+

+  @param  EntryPointStructure  SMBIOS entry point structure

+

+  @retval TRUE   The entry point structure is valid

+  @retval FALSE  The entry point structure is not valid

+

+**/

+BOOLEAN

+IsEntryPointStructureValid (

+  IN SMBIOS_TABLE_ENTRY_POINT  *EntryPointStructure

+  )

+{

+  UINTN                     Index;

+  UINT8                     Length;

+  UINT8                     Checksum;

+  UINT8                     *BytePtr;

+

+  BytePtr = (UINT8*) EntryPointStructure;

+  Length = EntryPointStructure->EntryPointLength;

+  Checksum = 0;

+

+  for (Index = 0; Index < Length; Index++) {

+    Checksum += BytePtr[Index];

+  }

+

+  if (Checksum != 0) {

+    return FALSE;

+  } else {

+    return TRUE;

+  }

+}

+

+

+/**

+  Get SMBIOS record length.

+

+  @param  SmbiosTable   SMBIOS pointer.

+

+**/

+UINTN

+SmbiosTableLength (

+  IN SMBIOS_STRUCTURE_POINTER SmbiosTable

+  )

+{

+  CHAR8  *AChar;

+  UINTN  Length;

+

+  AChar = (CHAR8 *)(SmbiosTable.Raw + SmbiosTable.Hdr->Length);

+

+  //

+  // Each structure shall be terminated by a double-null (SMBIOS spec.7.1)

+  //

+  while ((*AChar != 0) || (*(AChar + 1) != 0)) {

+    AChar ++;

+  }

+  Length = ((UINTN)AChar - (UINTN)SmbiosTable.Raw + 2);

+

+  return Length;

+}

+

+

+/**

+  Install all structures from the given SMBIOS structures block

+

+  @param  Smbios               SMBIOS protocol

+  @param  EntryPointStructure  SMBIOS entry point structures block

+

+**/

+EFI_STATUS

+InstallAllStructures (

+  IN EFI_SMBIOS_PROTOCOL       *Smbios,

+  IN SMBIOS_TABLE_ENTRY_POINT  *EntryPointStructure

+  )

+{

+  EFI_STATUS                Status;

+  SMBIOS_STRUCTURE_POINTER  SmbiosTable;

+  EFI_SMBIOS_HANDLE         SmbiosHandle;

+

+  SmbiosTable.Raw = (UINT8*)(UINTN) EntryPointStructure->TableAddress;

+  if (SmbiosTable.Raw == NULL) {

+    return EFI_INVALID_PARAMETER;

+  }

+

+  while (SmbiosTable.Hdr->Type != 127) {

+    //

+    // Log the SMBIOS data for this structure

+    //

+    SmbiosHandle = 0;

+    Status = Smbios->Add (

+                       Smbios,

+                       NULL,

+                       &SmbiosHandle,

+                       (EFI_SMBIOS_TABLE_HEADER*) SmbiosTable.Raw

+                       );

+    ASSERT_EFI_ERROR (Status);

+

+    //

+    // Get the next structure address

+    //

+    SmbiosTable.Raw = (UINT8 *)(SmbiosTable.Raw + SmbiosTableLength (SmbiosTable));

+  }

+

+  return EFI_SUCCESS;

+}

+

+

+/**

+  Installs SMBIOS information for OVMF

+

+  @param ImageHandle     Module's image handle

+  @param SystemTable     Pointer of EFI_SYSTEM_TABLE

+

+  @retval EFI_SUCCESS    Smbios data successfully installed

+  @retval Other          Smbios data was not installed

+

+**/

+EFI_STATUS

+EFIAPI

+SmbiosTablePublishEntry (

+  IN EFI_HANDLE           ImageHandle,

+  IN EFI_SYSTEM_TABLE     *SystemTable

+  )

+{

+  EFI_STATUS                Status;

+  EFI_SMBIOS_PROTOCOL       *Smbios;

+  SMBIOS_TABLE_ENTRY_POINT  *EntryPointStructure;

+

+  //

+  // Find the SMBIOS protocol

+  //

+  Status = gBS->LocateProtocol (

+                  &gEfiSmbiosProtocolGuid,

+                  NULL,

+                  (VOID**)&Smbios

+                  );

+  if (EFI_ERROR (Status)) {

+    return Status;

+  }

+

+  //

+  // Add Xen SMBIOS data if found

+  //

+  EntryPointStructure = GetXenSmbiosTables ();

+  if (EntryPointStructure != NULL) {

+    Status = InstallAllStructures (Smbios, EntryPointStructure);

+  }

+

+  return Status;

+}

diff --git a/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.h b/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.h
new file mode 100644
index 0000000..bf99e43
--- /dev/null
+++ b/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.h
@@ -0,0 +1,56 @@
+/** @file

+  This driver installs SMBIOS information for OVMF

+

+  Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>

+  Copyright (c) 2011, 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.

+

+**/

+

+#ifndef _SMBIOS_PLATFORM_DXE_H_

+#define _SMBIOS_PLATFORM_DXE_H_

+

+#include <PiDxe.h>

+

+#include <Protocol/Smbios.h>

+#include <IndustryStandard/SmBios.h>

+#include <Library/DebugLib.h>

+#include <Library/BaseLib.h>

+#include <Library/BaseMemoryLib.h>

+#include <Library/UefiBootServicesTableLib.h>

+

+

+/**

+  Locates the Xen SMBIOS data if it exists

+

+  @return SMBIOS_TABLE_ENTRY_POINT   Address of Xen SMBIOS data

+

+**/

+SMBIOS_TABLE_ENTRY_POINT *

+GetXenSmbiosTables (

+  VOID

+  );

+

+

+/**

+  Validates the SMBIOS entry point structure

+

+  @param  EntryPointStructure  SMBIOS entry point structure

+

+  @retval TRUE   The entry point structure is valid

+  @retval FALSE  The entry point structure is not valid

+

+**/

+BOOLEAN

+IsEntryPointStructureValid (

+  IN SMBIOS_TABLE_ENTRY_POINT  *EntryPointStructure

+  );

+

+#endif

diff --git a/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf b/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf
new file mode 100644
index 0000000..7058284
--- /dev/null
+++ b/OvmfPkg/SmbiosPlatformDxe/SmbiosPlatformDxe.inf
@@ -0,0 +1,57 @@
+## @file

+#  This driver installs SMBIOS information for OVMF

+#

+#  Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>

+#  Copyright (c) 2011, 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                      = SmbiosPlatformDxe

+  FILE_GUID                      = 4110465d-5ff3-4f4b-b580-24ed0d06747a

+  MODULE_TYPE                    = DXE_DRIVER

+  VERSION_STRING                 = 1.0

+

+  ENTRY_POINT                    = SmbiosTablePublishEntry

+

+#

+# The following information is for reference only and not required by the build tools.

+#

+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC

+#

+

+[Sources]

+  SmbiosPlatformDxe.h

+  SmbiosPlatformDxe.c

+  Xen.c

+

+[Packages]

+  MdePkg/MdePkg.dec

+  MdeModulePkg/MdeModulePkg.dec

+  OvmfPkg/OvmfPkg.dec

+

+[LibraryClasses]

+  UefiBootServicesTableLib

+  BaseMemoryLib

+  BaseLib

+  UefiDriverEntryPoint

+  DebugLib

+  HobLib

+

+[Protocols]

+  gEfiSmbiosProtocolGuid                      # PROTOCOL ALWAYS_CONSUMED

+

+[Guids]

+  gEfiXenInfoGuid

+

+[Depex]

+  gEfiSmbiosProtocolGuid

+

diff --git a/OvmfPkg/SmbiosPlatformDxe/Xen.c b/OvmfPkg/SmbiosPlatformDxe/Xen.c
new file mode 100644
index 0000000..93b8f74
--- /dev/null
+++ b/OvmfPkg/SmbiosPlatformDxe/Xen.c
@@ -0,0 +1,63 @@
+/** @file
+  Detect Xen hvmloader SMBIOS data for usage by OVMF.
+
+  Copyright (c) 2011, Bei Guan <gbtju85@gmail.com>
+  Copyright (c) 2011, 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 "SmbiosPlatformDxe.h"
+#include <Library/HobLib.h>
+#include <Guid/XenInfo.h>
+
+#define XEN_SMBIOS_PHYSICAL_ADDRESS       0x000EB000
+#define XEN_SMBIOS_PHYSICAL_END           0x000F0000
+
+/**
+  Locates the Xen SMBIOS data if it exists
+
+  @return SMBIOS_TABLE_ENTRY_POINT   Address of Xen SMBIOS data
+
+**/
+SMBIOS_TABLE_ENTRY_POINT *
+GetXenSmbiosTables (
+  VOID
+  )
+{
+  UINT8                     *XenSmbiosPtr;
+  SMBIOS_TABLE_ENTRY_POINT  *XenSmbiosEntryPointStructure;
+  EFI_HOB_GUID_TYPE         *GuidHob;
+
+  //
+  // See if a XenInfo HOB is available
+  //
+  GuidHob = GetFirstGuidHob (&gEfiXenInfoGuid);
+  if (GuidHob == NULL) {
+    return NULL;
+  }
+
+  for (XenSmbiosPtr = (UINT8*) XEN_SMBIOS_PHYSICAL_ADDRESS;
+       XenSmbiosPtr < (UINT8*) XEN_SMBIOS_PHYSICAL_END;
+       XenSmbiosPtr += 0x10) {
+
+    XenSmbiosEntryPointStructure = (SMBIOS_TABLE_ENTRY_POINT *) XenSmbiosPtr;
+
+    if (!AsciiStrnCmp ((CHAR8 *) XenSmbiosEntryPointStructure->AnchorString, "_SM_", 4) &&
+        !AsciiStrnCmp ((CHAR8 *) XenSmbiosEntryPointStructure->IntermediateAnchorString, "_DMI_", 5) &&
+        IsEntryPointStructureValid (XenSmbiosEntryPointStructure)) {
+
+      return XenSmbiosEntryPointStructure;
+
+    }
+  }
+
+  return NULL;
+}