nvram.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
- #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);
- extern void __nvram_set_checksum(void);
- extern void nvram_set_checksum(void);
- #endif
- #endif /* _LINUX_NVRAM_H */