PROCESSOR-SDK-AMIC110: UART 4 with AMIC110

Im using TMDXICE110 Dev board, in which i could use the uart example code for basic test and debugging. 

The default uart was UART_0, I need to use UART1 and UART4 for communication purpose.

I followed the Doc but, 

/cfs-file/__key/communityserver-discussions-components-files/791/5432.AM335x_5F00_AMIC110_5F00_Board_5F00_Porting_5F00_using_5F00_PRSDK.pdf

I'm unable to proceed with it.

Could someone help with a procedure to enable UART1 and UART4.

Thanks in Advance,

Akash