OvmfPkg: introduce E820.h

E820 definitions copied from IntelFrameworkModulePkg/Csm/
LegacyBiosDxe/LegacyBiosInterface.h.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14941 6f19259b-4bc3-4df7-8a09-765794883524

OvmfPkg/Include/IndustryStandard/E820.h

@@ -0,0 +1,46 @@
+/** @file
+
+Copyright (c) 2013, Citrix Systems UK Ltd.
+Copyright (c) 2006 - 2013, 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 __E820_H__
+#define __E820_H__
+
+#pragma pack(1)
+
+typedef enum {
+  EfiAcpiAddressRangeMemory   = 1,
+  EfiAcpiAddressRangeReserved = 2,
+  EfiAcpiAddressRangeACPI     = 3,
+  EfiAcpiAddressRangeNVS      = 4
+} EFI_ACPI_MEMORY_TYPE;
+
+typedef struct {
+  UINT64                BaseAddr;
+  UINT64                Length;
+  EFI_ACPI_MEMORY_TYPE  Type;
+} EFI_E820_ENTRY64;
+
+typedef struct {
+  UINT32                BassAddrLow;
+  UINT32                BaseAddrHigh;
+  UINT32                LengthLow;
+  UINT32                LengthHigh;
+  EFI_ACPI_MEMORY_TYPE  Type;
+} EFI_E820_ENTRY;
+
+#pragma pack()
+
+#endif /* __E820_H__ */