HI3516a

hi3516a的板子，调试时出现以下打印，怎么退出打印？曾在这个/etc/fstab配置文件添加过nfs       180.84.33.143:/homenfs       /opt/nfs   nfs     defaults   0   0

==== Your input Sensor type is imx178 ====
*** Board tools : ver0.0.1_20121120 ***
[debug]: {source/utils/cmdshell.c:166}cmdstr:himm
[error]: memmap():open /dev/mem error!
Segmentation fault
*** Board tools : ver0.0.1_20121120 ***
[debug]: {source/utilacodec inited!
s/cmdshell.c:166}cmdstr:himm
[error]: memmap():open /dev/mem error!
Segmentation fault
*** Board tools : ver0.0.1_20121120 ***
[debug]: {source/utils/cmdshell.c:166}cmdstr:himm
[error]: memmap():open /dev/mem error!
Segmentation fault
insert audio
==== Your input Sensor type is imx178 ====
mipi_init
init phy power successful!
load hi_mipi driver successful!
getty: can't open '/dev/null': No such file or directory
getty: can't open '/dev/null': No such file or directory
getty: can't open '/dev/null': No such file or directory
getty: can't open '/dev/null': No such file or directory