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/*
* 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
/* PowerMac specific nvram stuffs */
enum {
pmac_nvram_OF, /* Open Firmware partition */
pmac_nvram_XPRAM, /* MacOS XPRAM partition */
pmac_nvram_NR /* MacOS Name Registry partition */
};
/* Return partition offset in nvram */
extern int pmac_get_partition(int partition);
/* Direct access to XPRAM on PowerMacs */
extern u8 pmac_xpram_read(int xpaddr);
extern void pmac_xpram_write(int xpaddr, u8 data);
/* Synchronize NVRAM */
extern void nvram_sync(void);
/* Normal access to NVRAM */
extern unsigned char nvram_read_byte(int i);
extern void nvram_write_byte(unsigned char c, int i);
/* Some offsets in XPRAM */
#define PMAC_XPRAM_MACHINE_LOC 0xe4
#define PMAC_XPRAM_SOUND_VOLUME 0x08
/* Machine location structure in PowerMac 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
*
* Note that PMAC_NVRAM_GET_OFFSET is still supported, but is
* definitely obsolete. Do not use it if you can avoid it
*/
#define OBSOLETE_PMAC_NVRAM_GET_OFFSET \
_IOWR('p', 0x40, int)
#define IOC_NVRAM_GET_OFFSET _IOWR('p', 0x42, int) /* Get NVRAM partition offset */
#define IOC_NVRAM_SYNC _IO('p', 0x43) /* Sync NVRAM image */
#endif
#endif /* __KERNEL__ */
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