diff options
Diffstat (limited to 'OvmfPkg/SmbiosPlatformDxe/X86Xen.c')
| -rw-r--r-- | OvmfPkg/SmbiosPlatformDxe/X86Xen.c | 196 |
1 files changed, 98 insertions, 98 deletions
diff --git a/OvmfPkg/SmbiosPlatformDxe/X86Xen.c b/OvmfPkg/SmbiosPlatformDxe/X86Xen.c index 3f018d6f5c..3d2abcea7c 100644 --- a/OvmfPkg/SmbiosPlatformDxe/X86Xen.c +++ b/OvmfPkg/SmbiosPlatformDxe/X86Xen.c @@ -1,98 +1,98 @@ -/** @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 - -/** - 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 - -**/ -STATIC -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 = Checksum + (UINT8) BytePtr[Index]; - } - - if (Checksum != 0) { - return FALSE; - } else { - return TRUE; - } -} - -/** - 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*)(UINTN) XEN_SMBIOS_PHYSICAL_ADDRESS; - XenSmbiosPtr < (UINT8*)(UINTN) 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; -} +/** @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
+
+/**
+ 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
+
+**/
+STATIC
+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 = Checksum + (UINT8) BytePtr[Index];
+ }
+
+ if (Checksum != 0) {
+ return FALSE;
+ } else {
+ return TRUE;
+ }
+}
+
+/**
+ 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*)(UINTN) XEN_SMBIOS_PHYSICAL_ADDRESS;
+ XenSmbiosPtr < (UINT8*)(UINTN) 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;
+}
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