ac0a286f4d
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the OvmfPkg package Cc: Andrew Fish <afish@apple.com> Cc: Leif Lindholm <leif@nuviainc.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com> Reviewed-by: Andrew Fish <afish@apple.com>
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/** @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>
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#include <Library/BaseLib.h> // AsciiStrnCmp()
|
|
#include <Library/HobLib.h> // GetFirstGuidHob()
|
|
#include <Pi/PiHob.h> // EFI_HOB_GUID_TYPE
|
|
|
|
#include "XenSmbiosPlatformDxe.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;
|
|
}
|