nvram.h

 1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 2#ifndef _UAPI_LINUX_NVRAM_H
 3#define _UAPI_LINUX_NVRAM_H
 4
 5#include <linux/ioctl.h>
 6
 7/* /dev/nvram ioctls */
 8#define NVRAM_INIT	_IO('p', 0x40) /* initialize NVRAM and set checksum */
 9#define NVRAM_SETCKS	_IO('p', 0x41) /* recalculate checksum */
10
11/* for all current systems, this is where NVRAM starts */
12#define NVRAM_FIRST_BYTE    14
13/* all these functions expect an NVRAM offset, not an absolute */
14#define NVRAM_OFFSET(x)   ((x)-NVRAM_FIRST_BYTE)
15
16
17#endif /* _UAPI_LINUX_NVRAM_H */