NX change console to other uart

Hi Jerry:
J14 Pins3/4 = UART2_TXD,UART2_RXD /UART3_TX,UART3_RX =pin 236,238
The port is mapping to ttyTHS2.
After HW debug , this port is available for general uart usage after kenel bootup

But booloader and lk log are output from this port. (THS2 , UART2_TXD,UART2_RXD)
And ttyTCU0 login console is binding with THS0 .

Is there any way to redirect ttyTCU0 also with THS2?
let THS0 (UART1_TXD UART1_RXD) remain clear for general uart usage?
Does it need to modify cboot source code?
I have tried to disable console by follow this thread

but it seems have no effect on NX , the console still output.