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Diffstat (limited to 'bsps/powerpc/include/nvram.h')
| -rw-r--r-- | bsps/powerpc/include/nvram.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/bsps/powerpc/include/nvram.h b/bsps/powerpc/include/nvram.h new file mode 100644 index 0000000000..f579544336 --- /dev/null +++ b/bsps/powerpc/include/nvram.h @@ -0,0 +1,167 @@ +/* + * PreP compliant NVRAM access + * + * This file can be found in motorla or IBP PPC site. + */ + +#ifndef _PPC_NVRAM_H +#define _PPC_NVRAM_H + +#define NVRAM_AS0 0x74 +#define NVRAM_AS1 0x75 +#define NVRAM_DATA 0x77 + +/* RTC Offsets */ + +#define MOTO_RTC_SECONDS 0x1FF9 +#define MOTO_RTC_MINUTES 0x1FFA +#define MOTO_RTC_HOURS 0x1FFB +#define MOTO_RTC_DAY_OF_WEEK 0x1FFC +#define MOTO_RTC_DAY_OF_MONTH 0x1FFD +#define MOTO_RTC_MONTH 0x1FFE +#define MOTO_RTC_YEAR 0x1FFF +#define MOTO_RTC_CONTROLA 0x1FF8 +#define MOTO_RTC_CONTROLB 0x1FF9 + +#ifndef BCD_TO_BIN +#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10) +#endif + +#ifndef BIN_TO_BCD +#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10) +#endif + +/* Structure map for NVRAM on PowerPC Reference Platform */ +/* 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. +*/ + +#define NVSIZE 4096 /* size of NVRAM */ +#define OSAREASIZE 512 /* size of OSArea space */ +#define CONFSIZE 1024 /* guess at size of Configuration space */ + +#ifndef ASM + +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, + MKOS2 = 4, + MKAIX = 5, + Taligent = 6, + Solaris = 7, + MK = 12 +} OS_ID; + +typedef struct _ERROR_LOG { + unsigned char ErrorLogEntry[40]; /* To be architected */ +} ERROR_LOG; + +typedef enum _BOOT_STATUS { + BootStarted = 0x01, + BootFinished = 0x02, + RestartStarted = 0x04, + RestartFinished = 0x08, + PowerFailStarted = 0x10, + PowerFailFinished = 0x20, + ProcessorReady = 0x40, + ProcessorRunning = 0x80, + ProcessorStart = 0x0100 +} BOOT_STATUS; + +typedef struct _RESTART_BLOCK { + unsigned short Version; + unsigned short Revision; + unsigned long ResumeReserve1[2]; + volatile unsigned long BootStatus; + unsigned long CheckSum; /* Checksum of RESTART_BLOCK */ + void* RestartAddress; + void* SaveAreaAddr; + unsigned long SaveAreaLength; +} RESTART_BLOCK; + +typedef enum _OSAREA_USAGE { + Empty = 0, + Used = 1 +} OSAREA_USAGE; + +typedef enum _PM_MODE { + Suspend = 0x80, /* Part of state is in memory */ + 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 */ + RESTART_BLOCK RestartBlock; + 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 OSArea */ + unsigned long OSAreaLastWriteDT[2]; +} HEADER; + +/* Here is the whole map of the NVRAM */ +typedef struct _NVRAM_MAP { + HEADER Header; + unsigned char GEArea[NVSIZE-CONFSIZE-OSAREASIZE-sizeof(HEADER)]; + unsigned char OSArea[OSAREASIZE]; + unsigned char ConfigArea[CONFSIZE]; +} NVRAM_MAP; + +/* Routines to manipulate the NVRAM */ +void init_prep_nvram(void); +char *prep_nvram_get_var(const char *name); +char *prep_nvram_first_var(void); +char *prep_nvram_next_var(char *name); + +#endif /* ASM */ + +#endif /* _PPC_NVRAM_H */ |