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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [lib/] [libbsp/] [powerpc/] [shared/] [include/] [nvram.h] - Blame information for rev 846

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1 30 unneback
/*
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 * PreP compliant NVRAM access
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 *
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 * This file can be found in motorla or IBP PPC site.
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 *
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 * $Id: nvram.h,v 1.2 2001-09-27 12:01:06 chris Exp $
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 */
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#ifndef _PPC_NVRAM_H
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#define _PPC_NVRAM_H
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#define NVRAM_AS0  0x74
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#define NVRAM_AS1  0x75
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#define NVRAM_DATA 0x77
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/* RTC Offsets */
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#define MOTO_RTC_SECONDS        0x1FF9
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#define MOTO_RTC_MINUTES        0x1FFA
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#define MOTO_RTC_HOURS          0x1FFB
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#define MOTO_RTC_DAY_OF_WEEK    0x1FFC
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#define MOTO_RTC_DAY_OF_MONTH   0x1FFD
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#define MOTO_RTC_MONTH          0x1FFE
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#define MOTO_RTC_YEAR           0x1FFF
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#define MOTO_RTC_CONTROLA       0x1FF8
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#define MOTO_RTC_CONTROLB       0x1FF9
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#ifndef BCD_TO_BIN
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#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10)
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#endif
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#ifndef BIN_TO_BCD
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#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10)
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#endif
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/* Structure map for NVRAM on PowerPC Reference Platform */
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/* All fields are either character/byte strings which are valid either
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  endian or they are big-endian numbers.
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  There are a number of Date and Time fields which are in RTC format,
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  big-endian. These are stored in UT (GMT).
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  For enum's: if given in hex then they are bit significant, i.e. only
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  one bit is on for each enum.
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*/
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#define NVSIZE          4096    /* size of NVRAM */
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#define OSAREASIZE      512     /* size of OSArea space */
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#define CONFSIZE        1024    /* guess at size of Configuration space */
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#ifndef ASM
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typedef struct _SECURITY {
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  unsigned long BootErrCnt;         /* Count of boot password errors */
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  unsigned long ConfigErrCnt;       /* Count of config password errors */
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  unsigned long BootErrorDT[2];     /* Date&Time from RTC of last error in pw */
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  unsigned long ConfigErrorDT[2];   /* Date&Time from RTC of last error in pw */
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  unsigned long BootCorrectDT[2];   /* Date&Time from RTC of last correct pw */
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  unsigned long ConfigCorrectDT[2]; /* Date&Time from RTC of last correct pw */
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  unsigned long BootSetDT[2];       /* Date&Time from RTC of last set of pw */
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  unsigned long ConfigSetDT[2];     /* Date&Time from RTC of last set of pw */
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  unsigned char Serial[16];         /* Box serial number */
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} SECURITY;
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typedef enum _OS_ID {
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  Unknown       = 0,
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  Firmware      = 1,
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  AIX           = 2,
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  NT            = 3,
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  MKOS2         = 4,
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  MKAIX         = 5,
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  Taligent      = 6,
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  Solaris       = 7,
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  MK            = 12
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} OS_ID;
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typedef struct _ERROR_LOG {
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  unsigned char ErrorLogEntry[40]; /* To be architected */
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} ERROR_LOG;
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typedef enum _BOOT_STATUS {
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  BootStarted           = 0x01,
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  BootFinished          = 0x02,
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  RestartStarted        = 0x04,
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  RestartFinished       = 0x08,
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  PowerFailStarted      = 0x10,
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  PowerFailFinished     = 0x20,
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  ProcessorReady        = 0x40,
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  ProcessorRunning      = 0x80,
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  ProcessorStart        = 0x0100
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} BOOT_STATUS;
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typedef struct _RESTART_BLOCK {
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  unsigned short                Version;
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  unsigned short                Revision;
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  unsigned long                 ResumeReserve1[2];
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  volatile unsigned long        BootStatus;
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  unsigned long                 CheckSum;               /* Checksum of RESTART_BLOCK */
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  void*                         RestartAddress;
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  void*                         SaveAreaAddr;
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  unsigned long                 SaveAreaLength;
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} RESTART_BLOCK;
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typedef enum _OSAREA_USAGE {
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  Empty = 0,
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  Used  = 1
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} OSAREA_USAGE;
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typedef enum _PM_MODE {
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  Suspend = 0x80, /* Part of state is in memory */
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  Normal  = 0x00  /* No power management in effect */
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} PMMode;
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typedef struct _HEADER {
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  unsigned short        Size;       /* NVRAM size in K(1024) */
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  unsigned char         Version;     /* Structure map different */
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  unsigned char         Revision;    /* Structure map the same -may
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                                        be new values in old fields
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                                        in other words old code still works */
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  unsigned short        Crc1;       /* check sum from beginning of nvram to OSArea */
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  unsigned short        Crc2;       /* check sum of config */
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  unsigned char         LastOS;     /* OS_ID */
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  unsigned char         Endian;     /* B if big endian, L if little endian */
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  unsigned char         OSAreaUsage;/* OSAREA_USAGE */
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  unsigned char         PMMode;     /* Shutdown mode */
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  RESTART_BLOCK         RestartBlock;
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  SECURITY              Security;
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  ERROR_LOG             ErrorLog[2];
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  /* Global Environment information */
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  void*                 GEAddress;
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  unsigned long         GELength;
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  /* Date&Time from RTC of last change to Global Environment */
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  unsigned long         GELastWriteDT[2];
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  /* Configuration information */
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  void*                 ConfigAddress;
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  unsigned long         ConfigLength;
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  /* Date&Time from RTC of last change to Configuration */
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  unsigned long         ConfigLastWriteDT[2];
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  unsigned long         ConfigCount; /* Count of entries in Configuration */
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  /* OS dependent temp area */
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  void*                 OSAreaAddress;
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  unsigned long         OSAreaLength;
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  /* Date&Time from RTC of last change to OSAreaArea */
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  unsigned long         OSAreaLastWriteDT[2];
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} HEADER;
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/* Here is the whole map of the NVRAM */
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typedef struct _NVRAM_MAP {
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  HEADER        Header;
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  unsigned char GEArea[NVSIZE-CONFSIZE-OSAREASIZE-sizeof(HEADER)];
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  unsigned char OSArea[OSAREASIZE];
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  unsigned char ConfigArea[CONFSIZE];
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} NVRAM_MAP;
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/* Routines to manipulate the NVRAM */
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void init_prep_nvram(void);
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char *prep_nvram_get_var(const char *name);
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char *prep_nvram_first_var(void);
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char *prep_nvram_next_var(char *name);
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#endif /* ASM */
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#endif /* _PPC_NVRAM_H */

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