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/** @file
Copyright (c) 2018, 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 that 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 _PARTIAL_MIRROR_GUID_H_
#define _PARTIAL_MIRROR_GUID_H_
#define ADDRESS_BASED_MIRROR_VARIABLE_GUID { 0x7b9be2e0, 0xe28a, 0x4197, 0xad, 0x3e, 0x32, 0xf0, 0x62, 0xf9, 0x46, 0x2c }
#define ADDRESS_RANGE_MIRROR_VARIABLE_CURRENT L"MirrorCurrent"
#define ADDRESS_RANGE_MIRROR_VARIABLE_REQUEST L"MirrorRequest"
#define ADDRESS_BASED_MIRROR_VARIABLE_SIZE sizeof(ADDRESS_RANGE_MIRROR_VARIABLE_DATA)
#define ADDRESS_BASED_MIRROR_VARIABLE_ATTRIBUTE (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS)
#define ADDRESS_RANGE_MIRROR_VARIABLE_VERSION 1
#define MIRROR_STATUS_SUCCESS 0
#define MIRROR_STATUS_MIRROR_INCAPABLE 1
#define MIRROR_STATUS_VERSION_MISMATCH 2
#define MIRROR_STATUS_INVALID_REQUEST 3
#define MIRROR_STATUS_UNSUPPORTED_CONFIG 4
#define MIRROR_STATUS_OEM_SPECIFIC_CONFIGURATION 5
extern EFI_GUID gAddressBasedMirrorGuid;
#pragma pack(1)
typedef struct {
//
// MirroredAmountAbove4GB is the amount of available memory above 4GB that needs to be mirrored
// measured in basis point (hundredths of percent e.g. 12% = 1275).
// In a multi-socket system, platform is required to distribute the mirrored memory ranges such that the
// amount mirrored is approximately proportional to the amount of memory on each NUMA node. E.g. on
// a two node machine with 64GB on node 0 and 32GB on node 1, a request for 12GB of mirrored memory
// should be allocated with 8GB of mirror on node 0 and 4GB on node 1.
//
// For example, if the total memory in the system is 48GB and 12GB of memory above the 4GB addresses needs to be mirrored then the amount would be:
// Total Memory = 48 GB
// Total Memory above 4GB = 44 GB
// Percentage = 8/44 * 100 = 18.18% = 1818 basis points
// Consider a 2S system with 32 GB of memory attached to socket 0 and 16GB on socket 1,
// then socket 0 should mirror 8 GB of memory and socket 1 mirror 4GB to maintain the requested 18%.
// This ensures that OS has an adequate amount of mirrored memory on each NUMA domain.
//
UINT8 MirrorVersion;
BOOLEAN MirrorMemoryBelow4GB;
UINT16 MirroredAmountAbove4GB;
UINT8 MirrorStatus;
} ADDRESS_RANGE_MIRROR_VARIABLE_DATA;
typedef struct {
ADDRESS_RANGE_MIRROR_VARIABLE_DATA MirrorCurrentType;
ADDRESS_RANGE_MIRROR_VARIABLE_DATA MirrorRequestType;
} RASMEMORYINFO;
#pragma pack()
#endif
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