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1 #ifndef _UAPI_LINUX_NVRAM_H
2 #define _UAPI_LINUX_NVRAM_H
3 
4 #include <linux/ioctl.h>
5 
6 /* /dev/nvram ioctls */
7 #define NVRAM_INIT	_IO('p', 0x40) /* initialize NVRAM and set checksum */
8 #define NVRAM_SETCKS	_IO('p', 0x41) /* recalculate checksum */
9 
10 /* for all current systems, this is where NVRAM starts */
11 #define NVRAM_FIRST_BYTE    14
12 /* all these functions expect an NVRAM offset, not an absolute */
13 #define NVRAM_OFFSET(x)   ((x)-NVRAM_FIRST_BYTE)
14 
15 
16 #endif /* _UAPI_LINUX_NVRAM_H */
17