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68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/* nvram.h
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Copyright (c) 2016, Nikolaj Schlej. All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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*/
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#ifndef __NVRAM_H__
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#define __NVRAM_H__
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#include <QByteArray>
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#include <QString>
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#include "basetypes.h"
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//
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// Let's start with NVAR storage, as the most difficult one
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//
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// CEF5B9A3-476D-497F-9FDC-E98143E0422C
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const QByteArray NVRAM_NVAR_STORAGE_FILE_GUID
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("\xA3\xB9\xF5\xCE\x6D\x47\x7F\x49\x9F\xDC\xE9\x81\x43\xE0\x42\x2C", 16);
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// 9221315B-30BB-46B5-813E-1B1BF4712BD3
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const QByteArray NVRAM_NVAR_EXTERNAL_DEFAULTS_FILE_GUID
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("\x5B\x31\x21\x92\xBB\x30\xB5\x46\x81\x3E\x1B\x1B\xF4\x71\x2B\xD3", 16);
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extern QString variableAttributesToQstring(UINT8 attributes);
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// Make sure we use right packing rules
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#pragma pack(push,1)
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// Variable header
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typedef struct _NVAR_VARIABLE_HEADER {
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UINT32 Signature; // NVAR signature
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UINT16 Size; // Size of the variable including header
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UINT32 Next : 24; // Offset to the next variable in a list, or empty if latest in the list
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UINT32 Attributes : 8; // Attributes
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} NVAR_VARIABLE_HEADER;
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// NVAR signature
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#define NVRAM_NVAR_VARIABLE_SIGNATURE 0x5241564E
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// Attributes
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#define NVRAM_NVAR_VARIABLE_ATTRIB_RUNTIME 0x01
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#define NVRAM_NVAR_VARIABLE_ATTRIB_ASCII_NAME 0x02
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#define NVRAM_NVAR_VARIABLE_ATTRIB_GUID 0x04
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#define NVRAM_NVAR_VARIABLE_ATTRIB_DATA_ONLY 0x08
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#define NVRAM_NVAR_VARIABLE_ATTRIB_EXT_HEADER 0x10
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#define NVRAM_NVAR_VARIABLE_ATTRIB_HW_ERROR_RECORD 0x20
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#define NVRAM_NVAR_VARIABLE_ATTRIB_AUTH_WRITE 0x40
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#define NVRAM_NVAR_VARIABLE_ATTRIB_VALID 0x80
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// Extended attributes
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#define NVRAM_NVAR_VARIABLE_EXT_ATTRIB_CHECKSUM 0x01
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#define NVRAM_NVAR_VARIABLE_EXT_ATTRIB_AUTH_WRITE 0x10
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#define NVRAM_NVAR_VARIABLE_EXT_ATTRIB_TIME_BASED 0x20
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// Restore previous packing rules
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#pragma pack(pop)
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#endif
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