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

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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
This commit is contained in:
jljusten
2011-08-13 22:54:37 +00:00
parent d5aff67358
commit fb51181762
10 changed files with 373 additions and 6 deletions
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63
OvmfPkg/SmbiosPlatformDxe/Xen.c Normal file
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/** @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;
}