1 files changed, 167 insertions, 0 deletions

diff --git a/private/ntos/nthals/halalpha/environ.h b/private/ntos/nthals/halalpha/environ.h
new file mode 100644
index 000000000..8a1abc91c
--- /dev/null
+++ b/private/ntos/nthals/halalpha/environ.h
@@ -0,0 +1,167 @@
+/*++
+
+Copyright (c) 1992, 1993 Digital Equipment Corporation
+
+Module Name:
+
+    environ.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:
+
+--*/
+
+
+
+//
+// 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
+
+#ifdef EISA_PLATFORM
+//
+// Defines for the non-volatile configuration tables.
+//
+
+#define NV_NUMBER_OF_ENTRIES        40
+#define NV_LENGTH_OF_IDENTIFIER     (1024 - (NV_NUMBER_OF_ENTRIES * 16) - 8)
+#define NV_LENGTH_OF_DATA           (2048 -16)
+#define LENGTH_OF_ENVIRONMENT       1024
+#define LENGTH_OF_EISA_DATA         2044
+
+#define MAXIMUM_ENVIRONMENT_VALUE 256
+#define MAX_NUMBER_OF_ENVIRONMENT_VARIABLES 40
+
+//
+// The non-volatile configuration table structure.
+//
+
+typedef struct _NV_CONFIGURATION {
+    COMPRESSED_CONFIGURATION_PACKET Packet[NV_NUMBER_OF_ENTRIES]; // 0 to 640-4
+    UCHAR Identifier[NV_LENGTH_OF_IDENTIFIER]; // 640 to (1K - 8 - 4)
+    ULONG Monitor;                             // 1K-8
+    ULONG Floppy;                              // 1K-4
+    ULONG Floppy2;                             // 1K
+    ULONG KeyboardType;                        // 1K+4
+    UCHAR Data[NV_LENGTH_OF_DATA];             // Unused space 1K+8 to 3K-8-4
+    UCHAR Checksum1[4];                        // Data checksum 3K-8
+    UCHAR Environment[LENGTH_OF_ENVIRONMENT];  // Env Variables 3K-4 to 4K-4-4
+    UCHAR Checksum2[4];                        // Env checksum 4K-4
+    UCHAR EisaData[LENGTH_OF_EISA_DATA];       // Eisa Data (4K to 6K-4)
+    UCHAR Checksum3[4];                        // EisaData checksum
+} NV_CONFIGURATION, *PNV_CONFIGURATION;
+
+//
+// Defines for the volatile configuration tables.
+// smd - Increased the number of entries, length of Identifier and length
+//       of data.
+//
+
+#define NUMBER_OF_ENTRIES       200
+#define LENGTH_OF_IDENTIFIER    (3*1024)
+#define LENGTH_OF_DATA          2048
+
+//
+// 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;
+
+#else // EISA_PLATFORM
+
+//
+// Defines for the Non-Volatile configuration tables.
+//
+// SMD - We have reduced the size of the NVRAM from 6K to 3K
+//       If needed we could take a few bytes from ENVIRONMENT
+//       since there is tons of empty space there.
+//
+
+#define LENGTH_OF_ENVIRONMENT   ((3*1024) - 16 - 4)
+
+#define MAXIMUM_ENVIRONMENT_VALUE                   256
+#define MAXIMUM_NUMBER_OF_ENVIRONMENT_VARIABLES     28
+#define MAX_NUMBER_OF_ENVIRONMENT_VARIABLES         28
+//
+// The non-volatile configuration table structure.
+//
+
+typedef struct _NV_CONFIGURATION {
+    ULONG Monitor;                             //0
+    ULONG Floppy;                              //4
+    ULONG Floppy2;                             //8
+    ULONG KeyboardType;                        //12
+    UCHAR Environment[LENGTH_OF_ENVIRONMENT];  //16 to (3K-4)
+    UCHAR Checksum[4];
+} NV_CONFIGURATION, *PNV_CONFIGURATION;
+
+//
+// Defines for the Volatile configuration tables.
+//
+
+#define NUMBER_OF_ENTRIES       40
+#define LENGTH_OF_IDENTIFIER    (1024 - (NUMBER_OF_ENTRIES * 16))
+#define LENGTH_OF_DATA          2048
+
+//
+// The volatile configuration table structure.
+//
+
+typedef struct _CONFIGURATION {
+    CONFIGURATION_PACKET Packet[NUMBER_OF_ENTRIES];
+    UCHAR Identifier[LENGTH_OF_IDENTIFIER];
+    UCHAR Data[LENGTH_OF_DATA];
+} CONFIGURATION, *PCONFIGURATION;
+
+#endif // EISA_PLATFORM
+
+//
+//        The value of HalpCMOSRamBase must be set at initialization:
+//
+#define NVRAM_CONFIGURATION     HalpCMOSRamBase