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/* Structure map for NVRAM on PowerPC Reference Platform */

/* Revision 1 changes (8/25/94):

        - Power Management (RESTART_BLOCK struct)

        - Normal added to PM_MODE

        - OSIRQMask (HEADER struct) */

/* All fields are either character/byte strings which are valid either

endian or they are big-endian numbers.

There are a number of Date and Time fields which are in RTC format,

big-endian. These are stored in UT (GMT).

For enum's: if given in hex then they are bit significant, i.e. only

one bit is on for each enum.

*/

#ifndef _NVRAM_

#define _NVRAM_

#define VERSION  1

#define REVISION 0

#define OSAREASIZE 1024   /* size of OSArea space */

#define CONFSIZE 512      /* guess at size of Configuration space */

typedef struct _SECURITY {

  unsigned long BootErrCnt;         /* Count of boot password errors */

  unsigned long ConfigErrCnt;       /* Count of config password errors */

  unsigned long BootErrorDT[2];     /* Date&Time from RTC of last error in pw */

  unsigned long ConfigErrorDT[2];   /* Date&Time from RTC of last error in pw */

  unsigned long BootCorrectDT[2];   /* Date&Time from RTC of last correct pw */

  unsigned long ConfigCorrectDT[2]; /* Date&Time from RTC of last correct pw */

  unsigned long BootSetDT[2];       /* Date&Time from RTC of last set of pw */

  unsigned long ConfigSetDT[2];     /* Date&Time from RTC of last set of pw */

  unsigned char Serial[16];         /* Box serial number */

  } SECURITY;

typedef enum _OS_ID {

  Unknown = 0,

  Firmware = 1,

  AIX = 2,

  NT = 3,

  WPOS2 = 4,

  WPAIX = 5,

  Taligent = 6,

  Solaris = 7,

  Netware = 8,

  USL = 9,

  Low_End_Client = 10,

  SCO = 11

  } OS_ID;

typedef struct _ERROR_LOG {

  unsigned char ErrorLogEntry[40]; /* To be architected */

  } ERROR_LOG;

/*---Revision 1: Change the following struct:---*/

typedef struct _RESUME_BLOCK {

                                        /* Hibernation Resume Device will be an

                                           environment variable */

    unsigned long CheckSum;             /* Checksum of RESUME_BLOCK */

    volatile unsigned long BootStatus;

    void * ResumeAddr;                  /* For Suspend Resume */

    void * SaveAreaAddr;                /* For Suspend Resume */

    unsigned long SaveAreaLength;       /* For Suspend Resume */

    unsigned long HibResumeImageRBA;    /* RBA (512B blocks) of compressed OS

                                           memory image to be loaded by FW

                                           on Resume from hibernation */

    unsigned long HibResumeImageRBACount; /* Size of image in 512B blocks*/

    unsigned long Reserved;

  } RESUME_BLOCK;

typedef enum _OSAREA_USAGE {

  Empty = 0,

  Used = 1

  } OSAREA_USAGE;

typedef enum _PM_MODE {

  Suspend = 0x80,     /* Part of state is in memory */

  Hibernate = 0x40,   /* Nothing in memory - state saved elsewhere */

/* Revision 1: Normal added (actually was already here) */

  Normal = 0x00       /* No power management in effect */

  } PMMode;

typedef struct _HEADER {

  unsigned short Size;    /* NVRAM size in K(1024) */

  unsigned char Version;  /* Structure map different */

  unsigned char Revision; /* Structure map the same -

                             may be new values in old fields

                             in other words old code still works */

  unsigned short Crc1;    /* check sum from beginning of nvram to OSArea */

  unsigned short Crc2;    /* check sum of config */

  unsigned char LastOS;   /* OS_ID */

  unsigned char Endian;   /* B if big endian, L if little endian */

  unsigned char OSAreaUsage; /* OSAREA_USAGE */

  unsigned char PMMode;   /* Shutdown mode */

  RESUME_BLOCK ResumeBlock;

  SECURITY Security;

  ERROR_LOG ErrorLog[2];

/* Global Environment information */

  void * GEAddress;

  unsigned long GELength;

  /* Date&Time from RTC of last change to Global Environment */

  unsigned long GELastWriteDT[2];

/* Configuration information */

  void * ConfigAddress;

  unsigned long ConfigLength;

  /* Date&Time from RTC of last change to Configuration */

  unsigned long ConfigLastWriteDT[2];

  unsigned long ConfigCount; /* Count of entries in Configuration */

/* OS dependent temp area */

  void * OSAreaAddress;

  unsigned long OSAreaLength;

  /* Date&Time from RTC of last change to OSAreaArea */

  unsigned long OSAreaLastWriteDT[2];

/* Revision 1: add this mask - function tbd */

  /*unsigned short OSIRQMask;  OS to FW IRQ Mask - "I've used this one" */

  } HEADER, *PHEADER;

 #endif  /* ndef _NVRAM_ */