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Revision 1.2, Mon Aug 29 15:50:38 2005 UTC (12 years, 1 month ago) by nathans.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +0 -2 lines 

Merge up to 2.6.13.
Merge of 2.6.x-xfs-melb:linux:23660a by kenmcd.

#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 */