buildkernel for cubieboard failed

[Yan Morozz]

Hi, 
i  tried to build a kernel for cubieboard.
it failed. What do i wrong?

me# cd /usr/src
me#  make TARGET_ARCH=armv6  KERNCONF=CUBIEBOARD buildkernel
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . ..  .
/usr/src/sys/dev/random/probe.c:32:10: fatal error: 'opt_cpu.h' file not found
#include "opt_cpu.h"
         ^
1 error generated.
mkdep: compile failed
*** [.depend] Error code 1

Stop in /usr/obj/arm.armv6/usr/src/sys/CUBIEBOARD.
*** [buildkernel] Error code 1

Stop in /usr/src.
*** [buildkernel] Error code 1

Stop in /usr/src.

Thanks.