[acc25ee] | 1 | /* |
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| 2 | * PreP compliant NVRAM access |
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| 3 | * |
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| 4 | * This file can be found in motorla or IBP PPC site. |
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| 5 | */ |
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| 6 | |
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| 7 | #ifndef _PPC_NVRAM_H |
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| 8 | #define _PPC_NVRAM_H |
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| 9 | |
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| 10 | #define NVRAM_AS0 0x74 |
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| 11 | #define NVRAM_AS1 0x75 |
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| 12 | #define NVRAM_DATA 0x77 |
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| 13 | |
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| 14 | /* RTC Offsets */ |
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| 15 | |
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| 16 | #define MOTO_RTC_SECONDS 0x1FF9 |
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| 17 | #define MOTO_RTC_MINUTES 0x1FFA |
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| 18 | #define MOTO_RTC_HOURS 0x1FFB |
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| 19 | #define MOTO_RTC_DAY_OF_WEEK 0x1FFC |
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| 20 | #define MOTO_RTC_DAY_OF_MONTH 0x1FFD |
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| 21 | #define MOTO_RTC_MONTH 0x1FFE |
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| 22 | #define MOTO_RTC_YEAR 0x1FFF |
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| 23 | #define MOTO_RTC_CONTROLA 0x1FF8 |
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| 24 | #define MOTO_RTC_CONTROLB 0x1FF9 |
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| 25 | |
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| 26 | #ifndef BCD_TO_BIN |
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| 27 | #define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10) |
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| 28 | #endif |
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| 29 | |
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| 30 | #ifndef BIN_TO_BCD |
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| 31 | #define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10) |
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| 32 | #endif |
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| 33 | |
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| 34 | /* Structure map for NVRAM on PowerPC Reference Platform */ |
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| 35 | /* All fields are either character/byte strings which are valid either |
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| 36 | endian or they are big-endian numbers. |
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| 37 | |
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| 38 | There are a number of Date and Time fields which are in RTC format, |
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| 39 | big-endian. These are stored in UT (GMT). |
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| 40 | |
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| 41 | For enum's: if given in hex then they are bit significant, i.e. only |
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| 42 | one bit is on for each enum. |
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| 43 | */ |
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| 44 | |
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| 45 | #define NVSIZE 4096 /* size of NVRAM */ |
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| 46 | #define OSAREASIZE 512 /* size of OSArea space */ |
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| 47 | #define CONFSIZE 1024 /* guess at size of Configuration space */ |
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| 48 | |
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| 49 | #ifndef ASM |
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| 50 | |
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| 51 | typedef struct _SECURITY { |
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| 52 | unsigned long BootErrCnt; /* Count of boot password errors */ |
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| 53 | unsigned long ConfigErrCnt; /* Count of config password errors */ |
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| 54 | unsigned long BootErrorDT[2]; /* Date&Time from RTC of last error in pw */ |
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| 55 | unsigned long ConfigErrorDT[2]; /* Date&Time from RTC of last error in pw */ |
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| 56 | unsigned long BootCorrectDT[2]; /* Date&Time from RTC of last correct pw */ |
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| 57 | unsigned long ConfigCorrectDT[2]; /* Date&Time from RTC of last correct pw */ |
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| 58 | unsigned long BootSetDT[2]; /* Date&Time from RTC of last set of pw */ |
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| 59 | unsigned long ConfigSetDT[2]; /* Date&Time from RTC of last set of pw */ |
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| 60 | unsigned char Serial[16]; /* Box serial number */ |
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| 61 | } SECURITY; |
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| 62 | |
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| 63 | typedef enum _OS_ID { |
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| 64 | Unknown = 0, |
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| 65 | Firmware = 1, |
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| 66 | AIX = 2, |
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| 67 | NT = 3, |
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| 68 | MKOS2 = 4, |
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| 69 | MKAIX = 5, |
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| 70 | Taligent = 6, |
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| 71 | Solaris = 7, |
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| 72 | MK = 12 |
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| 73 | } OS_ID; |
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| 74 | |
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| 75 | typedef struct _ERROR_LOG { |
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| 76 | unsigned char ErrorLogEntry[40]; /* To be architected */ |
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| 77 | } ERROR_LOG; |
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| 78 | |
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| 79 | typedef enum _BOOT_STATUS { |
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| 80 | BootStarted = 0x01, |
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| 81 | BootFinished = 0x02, |
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| 82 | RestartStarted = 0x04, |
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| 83 | RestartFinished = 0x08, |
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| 84 | PowerFailStarted = 0x10, |
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| 85 | PowerFailFinished = 0x20, |
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| 86 | ProcessorReady = 0x40, |
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| 87 | ProcessorRunning = 0x80, |
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| 88 | ProcessorStart = 0x0100 |
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| 89 | } BOOT_STATUS; |
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| 90 | |
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| 91 | typedef struct _RESTART_BLOCK { |
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| 92 | unsigned short Version; |
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| 93 | unsigned short Revision; |
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| 94 | unsigned long ResumeReserve1[2]; |
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| 95 | volatile unsigned long BootStatus; |
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| 96 | unsigned long CheckSum; /* Checksum of RESTART_BLOCK */ |
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| 97 | void* RestartAddress; |
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| 98 | void* SaveAreaAddr; |
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| 99 | unsigned long SaveAreaLength; |
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| 100 | } RESTART_BLOCK; |
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| 101 | |
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| 102 | typedef enum _OSAREA_USAGE { |
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| 103 | Empty = 0, |
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| 104 | Used = 1 |
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| 105 | } OSAREA_USAGE; |
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| 106 | |
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| 107 | typedef enum _PM_MODE { |
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| 108 | Suspend = 0x80, /* Part of state is in memory */ |
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| 109 | Normal = 0x00 /* No power management in effect */ |
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| 110 | } PMMode; |
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| 111 | |
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| 112 | typedef struct _HEADER { |
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| 113 | unsigned short Size; /* NVRAM size in K(1024) */ |
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| 114 | unsigned char Version; /* Structure map different */ |
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| 115 | unsigned char Revision; /* Structure map the same -may |
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| 116 | be new values in old fields |
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| 117 | in other words old code still works */ |
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| 118 | unsigned short Crc1; /* check sum from beginning of nvram to OSArea */ |
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| 119 | unsigned short Crc2; /* check sum of config */ |
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| 120 | unsigned char LastOS; /* OS_ID */ |
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| 121 | unsigned char Endian; /* B if big endian, L if little endian */ |
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| 122 | unsigned char OSAreaUsage;/* OSAREA_USAGE */ |
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| 123 | unsigned char PMMode; /* Shutdown mode */ |
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| 124 | RESTART_BLOCK RestartBlock; |
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| 125 | SECURITY Security; |
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| 126 | ERROR_LOG ErrorLog[2]; |
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| 127 | |
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| 128 | /* Global Environment information */ |
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| 129 | void* GEAddress; |
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| 130 | unsigned long GELength; |
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| 131 | |
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| 132 | /* Date&Time from RTC of last change to Global Environment */ |
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| 133 | unsigned long GELastWriteDT[2]; |
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| 134 | |
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| 135 | /* Configuration information */ |
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| 136 | void* ConfigAddress; |
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| 137 | unsigned long ConfigLength; |
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| 138 | |
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| 139 | /* Date&Time from RTC of last change to Configuration */ |
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| 140 | unsigned long ConfigLastWriteDT[2]; |
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| 141 | unsigned long ConfigCount; /* Count of entries in Configuration */ |
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| 142 | |
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| 143 | /* OS dependent temp area */ |
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| 144 | void* OSAreaAddress; |
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| 145 | unsigned long OSAreaLength; |
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| 146 | |
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[c009cd5] | 147 | /* Date&Time from RTC of last change to OSArea */ |
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[acc25ee] | 148 | unsigned long OSAreaLastWriteDT[2]; |
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| 149 | } HEADER; |
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| 150 | |
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| 151 | /* Here is the whole map of the NVRAM */ |
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| 152 | typedef struct _NVRAM_MAP { |
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| 153 | HEADER Header; |
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| 154 | unsigned char GEArea[NVSIZE-CONFSIZE-OSAREASIZE-sizeof(HEADER)]; |
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| 155 | unsigned char OSArea[OSAREASIZE]; |
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| 156 | unsigned char ConfigArea[CONFSIZE]; |
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| 157 | } NVRAM_MAP; |
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| 158 | |
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| 159 | /* Routines to manipulate the NVRAM */ |
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| 160 | void init_prep_nvram(void); |
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| 161 | char *prep_nvram_get_var(const char *name); |
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| 162 | char *prep_nvram_first_var(void); |
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| 163 | char *prep_nvram_next_var(char *name); |
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| 164 | |
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| 165 | #endif /* ASM */ |
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[6128a4a] | 166 | |
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[acc25ee] | 167 | #endif /* _PPC_NVRAM_H */ |
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