1*53ee8cc1Swenshuai.xi #ifndef _LINUX_NVRAM_H 2*53ee8cc1Swenshuai.xi #define _LINUX_NVRAM_H 3*53ee8cc1Swenshuai.xi 4*53ee8cc1Swenshuai.xi #include <linux/ioctl.h> 5*53ee8cc1Swenshuai.xi 6*53ee8cc1Swenshuai.xi /* /dev/nvram ioctls */ 7*53ee8cc1Swenshuai.xi #define NVRAM_INIT _IO('p', 0x40) /* initialize NVRAM and set checksum */ 8*53ee8cc1Swenshuai.xi #define NVRAM_SETCKS _IO('p', 0x41) /* recalculate checksum */ 9*53ee8cc1Swenshuai.xi 10*53ee8cc1Swenshuai.xi /* for all current systems, this is where NVRAM starts */ 11*53ee8cc1Swenshuai.xi #define NVRAM_FIRST_BYTE 14 12*53ee8cc1Swenshuai.xi /* all these functions expect an NVRAM offset, not an absolute */ 13*53ee8cc1Swenshuai.xi #define NVRAM_OFFSET(x) ((x)-NVRAM_FIRST_BYTE) 14*53ee8cc1Swenshuai.xi 15*53ee8cc1Swenshuai.xi 16*53ee8cc1Swenshuai.xi #endif /* _LINUX_NVRAM_H */ 17