1*f80ad8b4SAndroid Build Coastguard Worker /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*f80ad8b4SAndroid Build Coastguard Worker #ifndef _UAPI_LINUX_NVRAM_H 3*f80ad8b4SAndroid Build Coastguard Worker #define _UAPI_LINUX_NVRAM_H 4*f80ad8b4SAndroid Build Coastguard Worker 5*f80ad8b4SAndroid Build Coastguard Worker #include <linux/ioctl.h> 6*f80ad8b4SAndroid Build Coastguard Worker 7*f80ad8b4SAndroid Build Coastguard Worker /* /dev/nvram ioctls */ 8*f80ad8b4SAndroid Build Coastguard Worker #define NVRAM_INIT _IO('p', 0x40) /* initialize NVRAM and set checksum */ 9*f80ad8b4SAndroid Build Coastguard Worker #define NVRAM_SETCKS _IO('p', 0x41) /* recalculate checksum */ 10*f80ad8b4SAndroid Build Coastguard Worker 11*f80ad8b4SAndroid Build Coastguard Worker /* for all current systems, this is where NVRAM starts */ 12*f80ad8b4SAndroid Build Coastguard Worker #define NVRAM_FIRST_BYTE 14 13*f80ad8b4SAndroid Build Coastguard Worker /* all these functions expect an NVRAM offset, not an absolute */ 14*f80ad8b4SAndroid Build Coastguard Worker #define NVRAM_OFFSET(x) ((x)-NVRAM_FIRST_BYTE) 15*f80ad8b4SAndroid Build Coastguard Worker 16*f80ad8b4SAndroid Build Coastguard Worker 17*f80ad8b4SAndroid Build Coastguard Worker #endif /* _UAPI_LINUX_NVRAM_H */ 18