diff options
Diffstat (limited to 'private/ntos/nthals/hal0jens/alpha/jxenv.h')
| -rw-r--r-- | private/ntos/nthals/hal0jens/alpha/jxenv.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/private/ntos/nthals/hal0jens/alpha/jxenv.h b/private/ntos/nthals/hal0jens/alpha/jxenv.h new file mode 100644 index 000000000..90763ef56 --- /dev/null +++ b/private/ntos/nthals/hal0jens/alpha/jxenv.h @@ -0,0 +1,160 @@ +/*++ + +Copyright (c) 1992 Digital Equipment Corporation + +Module Name: + + xxenv.h + +Abstract: + + This module contains definitions for environment variable support + under the HAL. (Parts taken from J. Derosa's FWP.H) + +Author: + + Jeff McLeman (DEC) 17-Sep-1992 + +Revision History: + +--*/ + + + +// +// If any aspect of the NVRAM component / configuration data structure +// is changed for the Alpha/Jensen machine, the module jencds.c may also need +// to be changed. +// + + +// +// Define the private configuration packet structure, which contains a +// configuration component as well as pointers to the component's parent, +// peer, child, and configuration data. +// + +typedef struct _CONFIGURATION_PACKET { + CONFIGURATION_COMPONENT Component; + struct _CONFIGURATION_PACKET *Parent; + struct _CONFIGURATION_PACKET *Peer; + struct _CONFIGURATION_PACKET *Child; + PVOID ConfigurationData; +} CONFIGURATION_PACKET, *PCONFIGURATION_PACKET; + +// +// The compressed configuration packet structure used to store configuration +// data in NVRAM. +// + +typedef struct _COMPRESSED_CONFIGURATION_PACKET { + UCHAR Parent; + UCHAR Class; + UCHAR Type; + UCHAR Flags; + ULONG Key; + UCHAR Version; + UCHAR Revision; + USHORT ConfigurationDataLength; + USHORT Identifier; + USHORT ConfigurationData; +} COMPRESSED_CONFIGURATION_PACKET, *PCOMPRESSED_CONFIGURATION_PACKET; + +// +// Defines for Identifier index. +// + +#define NO_CONFIGURATION_IDENTIFIER 0xFFFF + +// +// Defines for the volatile and non-volatile configuration tables. +// + +#define NUMBER_OF_ENTRIES 104 +#define LENGTH_OF_IDENTIFIER 2000 +#define LENGTH_OF_DATA 2048 +#define LENGTH_OF_ENVIRONMENT 1500 +#define LENGTH_OF_EISA_DATA 2500 + +#define MAXIMUM_ENVIRONMENT_VALUE 256 +#define MAX_NUMBER_OF_ENVIRONMENT_VARIABLES 28 + +// +// The volatile configuration table structure. +// + +typedef struct _CONFIGURATION { + CONFIGURATION_PACKET Packet[NUMBER_OF_ENTRIES]; + UCHAR Identifier[LENGTH_OF_IDENTIFIER]; + UCHAR Data[LENGTH_OF_DATA]; + UCHAR EisaData[LENGTH_OF_EISA_DATA]; +} CONFIGURATION, *PCONFIGURATION; + +// +// The non-volatile configuration table structure. +// + +typedef struct _NV_CONFIGURATION { + COMPRESSED_CONFIGURATION_PACKET Packet[NUMBER_OF_ENTRIES]; + UCHAR Identifier[LENGTH_OF_IDENTIFIER]; + UCHAR Data[LENGTH_OF_DATA]; + UCHAR Checksum1[4]; + UCHAR Environment[LENGTH_OF_ENVIRONMENT]; + UCHAR Checksum2[4]; + UCHAR EisaData[LENGTH_OF_EISA_DATA]; + UCHAR Checksum3[4]; +} NV_CONFIGURATION, *PNV_CONFIGURATION; + +// +// Define identifier index, data index, pointer to configuration table, and +// the system identifier. +// + +extern ULONG IdentifierIndex; +extern ULONG DataIndex; +extern ULONG EisaDataIndex; +extern SYSTEM_ID SystemId; + + + +// +// PROM layout. +// + +#define PROM_VIRTUAL_BASE 0xA0D00000 + +// +// Start of firmware executable code. Code lives in blocks 7, 8, 9, A and B. +// +#define PROM_PAGE7 ( PROM_VIRTUAL_BASE+0x70000 ) + + +// +// Component Data Structure, environment variables. +// These contain their own checksums. +// +#define PROM_PAGEC ( PROM_VIRTUAL_BASE+0xC0000 ) +#define NVRAM_CONFIGURATION PROM_PAGEC + +// +// Alpha/Jensen PROM command definitions. +// + +#define PROM_ERASE_SETUP 0x20 +#define PROM_ERASE_CONFIRM 0xD0 +#define PROM_BYTEWRITE_SETUP 0x40 +#define PROM_READ_STATUS 0x70 +#define PROM_CLEAR_STATUS 0x50 +#define PROM_READ_ARRAY 0xff + +// +// The following structures are used for the timer mechanism for +// updating the ROM +// + +typedef struct _PROMTIMER_ { + KTIMER Timer; + KDPC Dpc; +} PROMTIMER, *PPROMTIMER; + + |