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 | |