1/* 2 * PreP compliant NVRAM access 3 */ 4 5#ifdef __KERNEL__ 6#ifndef _PPC_NVRAM_H 7#define _PPC_NVRAM_H 8 9#define NVRAM_AS0 0x74 10#define NVRAM_AS1 0x75 11#define NVRAM_DATA 0x77 12 13 14/* RTC Offsets */ 15 16#define MOTO_RTC_SECONDS 0x1FF9 17#define MOTO_RTC_MINUTES 0x1FFA 18#define MOTO_RTC_HOURS 0x1FFB 19#define MOTO_RTC_DAY_OF_WEEK 0x1FFC 20#define MOTO_RTC_DAY_OF_MONTH 0x1FFD 21#define MOTO_RTC_MONTH 0x1FFE 22#define MOTO_RTC_YEAR 0x1FFF 23#define MOTO_RTC_CONTROLA 0x1FF8 24#define MOTO_RTC_CONTROLB 0x1FF9 25 26#ifndef BCD_TO_BIN 27#define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10) 28#endif 29 30#ifndef BIN_TO_BCD 31#define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10) 32#endif 33 34/* PowerMac specific nvram stuffs */ 35 36enum { 37 pmac_nvram_OF, /* Open Firmware partition */ 38 pmac_nvram_XPRAM, /* MacOS XPRAM partition */ 39 pmac_nvram_NR /* MacOS Name Registry partition */ 40}; 41 42/* Return partition offset in nvram */ 43extern int pmac_get_partition(int partition); 44 45/* Direct access to XPRAM */ 46extern u8 pmac_xpram_read(int xpaddr); 47extern void pmac_xpram_write(int xpaddr, u8 data); 48 49/* Some offsets in XPRAM */ 50#define PMAC_XPRAM_MACHINE_LOC 0xe4 51#define PMAC_XPRAM_SOUND_VOLUME 0x08 52 53/* Machine location structure in XPRAM */ 54struct pmac_machine_location { 55 unsigned int latitude; /* 2+30 bit Fractional number */ 56 unsigned int longitude; /* 2+30 bit Fractional number */ 57 unsigned int delta; /* mix of GMT delta and DLS */ 58}; 59 60/* /dev/nvram ioctls */ 61#define PMAC_NVRAM_GET_OFFSET _IOWR('p', 0x40, int) /* Get NVRAM partition offset */ 62 63#endif 64#endif /* __KERNEL__ */ 65