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 */
18