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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_ */
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