1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_LINUX_NVRAM_H 2 #ifndef _UAPI_LINUX_NVRAM_H
3 #define _UAPI_LINUX_NVRAM_H 3 #define _UAPI_LINUX_NVRAM_H
4 4
5 #include <linux/ioctl.h> 5 #include <linux/ioctl.h>
6 6
7 /* /dev/nvram ioctls */ 7 /* /dev/nvram ioctls */
8 #define NVRAM_INIT _IO('p', 0x40) /* init 8 #define NVRAM_INIT _IO('p', 0x40) /* initialize NVRAM and set checksum */
9 #define NVRAM_SETCKS _IO('p', 0x41) /* reca 9 #define NVRAM_SETCKS _IO('p', 0x41) /* recalculate checksum */
10 10
11 /* for all current systems, this is where NVRA 11 /* for all current systems, this is where NVRAM starts */
12 #define NVRAM_FIRST_BYTE 14 12 #define NVRAM_FIRST_BYTE 14
13 /* all these functions expect an NVRAM offset, 13 /* all these functions expect an NVRAM offset, not an absolute */
14 #define NVRAM_OFFSET(x) ((x)-NVRAM_FIRST_BYT 14 #define NVRAM_OFFSET(x) ((x)-NVRAM_FIRST_BYTE)
15 15
16 16
17 #endif /* _UAPI_LINUX_NVRAM_H */ 17 #endif /* _UAPI_LINUX_NVRAM_H */
18 18
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