No respone when running linux in Nios II SDKshell

I have created a system, kernal ,file system and uploaded them.

I try to running the linux system through the Nios II SDK shell, but on response.

[SOPC Builder]$nios2-termial

nios2-terminal: connected to hardware target using JTAG UART on cable

nios2-terminal: "USB-Blaster [USB-0]", device 1, instance 0

nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)

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Nios II Linux v1.4

Altera Cyclone II Nios II dev board

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