216 lines
4.3 KiB
C
216 lines
4.3 KiB
C
/*++
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Copyright (c) 1994, 1995 Digital Equipment Corporation
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Module Name:
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nvram.h
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Abstract:
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This module declares the NVRAM data structures.
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Author:
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Dave Richards 12-Jan-1995
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Revision History:
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--*/
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#ifndef _NVRAM_H_
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#define _NVRAM_H_
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//
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// NVRAM Region 0 definitions.
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//
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#define NVR_REGION0_OFFSET FIELD_OFFSET(NVRAM, Region0)
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#define NVR_REGION0_LENGTH (3 * 1024)
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#define NVR_REGION0_SIGNATURE 0x06201993
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#define NVR_REGION0_VERSION 1
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//
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// NVRAM Region 0 Directory definitions.
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//
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#define NVR_REGION0_DIR_FW_CONFIG 0
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#define NVR_REGION0_DIR_LANGUAGE 1
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#define NVR_REGION0_DIR_ENVIRONMENT 2
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#define NVR_REGION0_DIR_END 3
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#define NVR_REGION0_DIR_SIZE 4
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//
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// NVRAM Region 0 structure.
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//
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#define NVR_REGION0_OPAQUE_LENGTH \
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NVR_REGION0_LENGTH - \
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(sizeof (ULONG) /* Signature */ + \
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sizeof (UCHAR) /* Version */ + \
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sizeof (UCHAR) /* DirectoryEntries */ + \
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sizeof (USHORT) * NVR_REGION0_DIR_SIZE /* Directory */ + \
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sizeof (ULONG)) /* Checksum */
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typedef struct {
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ULONG Signature;
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UCHAR Version;
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UCHAR DirectoryEntries;
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USHORT Directory[NVR_REGION0_DIR_SIZE];
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UCHAR Opaque[NVR_REGION0_OPAQUE_LENGTH];
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ULONG Checksum;
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} NVR_REGION0, *PNVR_REGION0;
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//
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// NVRAM Region 0 Section 0 structure. (Firmware configuration)
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//
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#define NVR_FW_CONFIG_LENGTH sizeof (NVR_FW_CONFIG)
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typedef struct {
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ULONG Monitor;
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ULONG Floppy;
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ULONG Floppy2;
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ULONG KeyboardType;
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} NVR_FW_CONFIG, *PNVR_FW_CONFIG;
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//
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// NVRAM Region 0 Section 1 structure. (Language configuration)
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//
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#define MAXIMUM_LANGUAGE_PATH 128
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#define NVR_LANGUAGE_LENGTH sizeof (NVR_LANGUAGE)
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typedef struct {
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CHAR Path[MAXIMUM_LANGUAGE_PATH];
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LONG Id;
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LONG Source;
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LONG Spare1;
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LONG Spare2;
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} NVR_LANGUAGE, *PNVR_LANGUAGE;
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//
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// NVRAM Region 0 Section 2 definitions. (Environment)
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//
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#define MAXIMUM_ENVIRONMENT_VALUE 256
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#define MAX_NUMBER_OF_ENVIRONMENT_VARIABLES 28
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//
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// NVRAM Region 1 definitions.
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//
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#define NVR_REGION1_OFFSET FIELD_OFFSET(NVRAM, Region1)
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#define NVR_REGION1_LENGTH (3 * 1024)
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#define NVR_REGION1_SIGNATURE 0x865D8546
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#define NVR_REGION1_VERSION 1
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//
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// EISA NVRAM Definitions
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//
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#if defined(EISA_PLATFORM)
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//
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// Defines for Identifier index.
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//
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#define NO_CONFIGURATION_IDENTIFIER 0xFFFF
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//
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// Defines for the region 1 table sizes.
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//
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#define NV_NUMBER_OF_ENTRIES 33
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#define NV_LENGTH_OF_IDENTIFIER 496
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#define LENGTH_OF_EISA_DATA 2032
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//
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// The compressed configuration packet structure used to store configuration
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// data in NVRAM.
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//
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typedef struct _COMPRESSED_CONFIGURATION_PACKET {
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UCHAR Parent;
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UCHAR Class;
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UCHAR Type;
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UCHAR Flags;
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ULONG Key;
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UCHAR Version;
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UCHAR Revision;
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USHORT ConfigurationDataLength;
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USHORT Identifier;
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USHORT ConfigurationData;
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} COMPRESSED_CONFIGURATION_PACKET, *PCOMPRESSED_CONFIGURATION_PACKET;
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#endif // EISA_PLATFORM
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//
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// Region 1 structure.
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//
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typedef struct {
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#if defined(EISA_PLATFORM)
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//
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// EISA configuration information.
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//
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ULONG Signature;
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UCHAR Version;
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UCHAR CompressedPacketSize;
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UCHAR IdentifierSize;
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UCHAR EisaDataSize;
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COMPRESSED_CONFIGURATION_PACKET
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Packet[NV_NUMBER_OF_ENTRIES];
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UCHAR Identifier[NV_LENGTH_OF_IDENTIFIER];
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UCHAR EisaData[LENGTH_OF_EISA_DATA];
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ULONG Spare;
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ULONG Checksum;
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#else
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//
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// Reserved for the SRM Console.
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//
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UCHAR Opaque[NVR_REGION1_LENGTH];
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#endif
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} NVR_REGION1, *PNVR_REGION1;
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//
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// NVRAM Region 2 definitions.
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//
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#define NVR_REGION2_OFFSET FIELD_OFFSET(NVRAM, Region2)
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#define NVR_REGION2_LENGTH (2 * 1024)
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//
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// NVRAM Region 2 structure.
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//
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typedef struct {
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UCHAR Opaque[NVR_REGION2_LENGTH];
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} NVR_REGION2, *PNVR_REGION2;
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//
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// NVRAM definitions.
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//
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#define NVR_LENGTH sizeof (NVRAM)
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//
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// NVRAM structure.
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//
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typedef struct {
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NVR_REGION0 Region0;
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NVR_REGION1 Region1;
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NVR_REGION2 Region2;
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} NVRAM, *PNVRAM;
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#endif
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