/** @file
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Definition of the global NVS area protocol. This protocol
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publishes the address and format of a global ACPI NVS buffer
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used as a communications buffer between SMM code and ASL code.
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The format is derived from the ACPI reference code, version 0.95.
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Note: Data structures defined in this protocol are not naturally aligned.
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Copyright (c) 2013-2015 Intel Corporation.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _GLOBAL_NVS_AREA_H_
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#define _GLOBAL_NVS_AREA_H_
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//
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// Forward reference for pure ANSI compatability
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//
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typedef struct _EFI_GLOBAL_NVS_AREA_PROTOCOL EFI_GLOBAL_NVS_AREA_PROTOCOL;
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//
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// Global NVS Area Protocol GUID
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//
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#define EFI_GLOBAL_NVS_AREA_PROTOCOL_GUID \
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{ 0x74e1e48, 0x8132, 0x47a1, {0x8c, 0x2c, 0x3f, 0x14, 0xad, 0x9a, 0x66, 0xdc} }
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//
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// Global NVS Area definition
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//
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#pragma pack (1)
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typedef struct {
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//
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// Miscellaneous Dynamic Values
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//
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UINT32 OperatingSystemType; // Os type indicator
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UINT32 Cfgd; // System configuration description
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UINT32 HpetEnable;
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UINT32 Pm1blkIoBaseAddress;
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UINT32 PmbaIoBaseAddress;
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UINT32 Gpe0blkIoBaseAddress;
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UINT32 GbaIoBaseAddress;
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UINT32 SmbaIoBaseAddress;
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UINT32 Reserved1;
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UINT32 WdtbaIoBaseAddress;
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UINT32 HpetBaseAddress;
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UINT32 HpetSize;
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UINT32 PciExpressBaseAddress;
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UINT32 PciExpressSize;
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UINT32 RcbaMmioBaseAddress;
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UINT32 RcbaMmioSize;
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UINT32 IoApicBaseAddress;
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UINT32 IoApicSize;
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UINT32 TpmPresent;
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UINT32 DBG2Present;
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UINT32 PlatformType; // Set to one of EFI_PLATFORM_TYPE enums.
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UINT32 AlternateSla; // If TRUE use alternate I2C Slave addresses.
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UINT8 Reserved[512 - 4 * 22]; // Total 512 Bytes
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} EFI_GLOBAL_NVS_AREA;
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#pragma pack ()
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//
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// Global NVS Area Protocol
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//
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struct _EFI_GLOBAL_NVS_AREA_PROTOCOL {
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EFI_GLOBAL_NVS_AREA *Area;
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};
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//
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// Extern the GUID for protocol users.
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//
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extern EFI_GUID gEfiGlobalNvsAreaProtocolGuid;
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#endif
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