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#ifndef _LINUX_NVRAM_H

#define _LINUX_NVRAM_H

#include <linux/ioctl.h>

/* /dev/nvram ioctls */

#define NVRAM_INIT      _IO('p', 0x40) /* initialize NVRAM and set checksum */

#define NVRAM_SETCKS    _IO('p', 0x41) /* recalculate checksum */

/* for all current systems, this is where NVRAM starts */

#define NVRAM_FIRST_BYTE    14

/* all these functions expect an NVRAM offset, not an absolute */

#define NVRAM_OFFSET(x)   ((x)-NVRAM_FIRST_BYTE)

#ifdef __KERNEL__

/* __foo is foo without grabbing the rtc_lock - get it yourself */

extern unsigned char __nvram_read_byte(int i);

extern unsigned char nvram_read_byte(int i);

extern void __nvram_write_byte(unsigned char c, int i);

extern void nvram_write_byte(unsigned char c, int i);

extern int __nvram_check_checksum(void);

extern int nvram_check_checksum(void);

#endif

#endif  /* _LINUX_NVRAM_H */