nvram.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:2k
- /*
- * BK Id: SCCS/s.nvram.h 1.5 05/17/01 18:14:25 cort
- */
- /*
- * PreP compliant NVRAM access
- */
- #ifdef __KERNEL__
- #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
- /* PowerMac specific nvram stuffs */
- enum {
- pmac_nvram_OF, /* Open Firmware partition */
- pmac_nvram_XPRAM, /* MacOS XPRAM partition */
- pmac_nvram_NR /* MacOS Name Registry partition */
- };
- #ifdef __KERNEL__
- /* Return partition offset in nvram */
- extern int pmac_get_partition(int partition);
- /* Direct access to XPRAM */
- extern u8 pmac_xpram_read(int xpaddr);
- extern void pmac_xpram_write(int xpaddr, u8 data);
- #endif /* __KERNEL__ */
- /* Some offsets in XPRAM */
- #define PMAC_XPRAM_MACHINE_LOC 0xe4
- #define PMAC_XPRAM_SOUND_VOLUME 0x08
- /* Machine location structure in XPRAM */
- struct pmac_machine_location {
- unsigned int latitude; /* 2+30 bit Fractional number */
- unsigned int longitude; /* 2+30 bit Fractional number */
- unsigned int delta; /* mix of GMT delta and DLS */
- };
- /* /dev/nvram ioctls */
- #define PMAC_NVRAM_GET_OFFSET _IOWR('p', 0x40, int) /* Get NVRAM partition offset */
- #endif
- #endif /* __KERNEL__ */