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TM4C123GE6PM: Open OCD error when using in eclipse

Part Number: TM4C123GE6PM
Other Parts Discussed in Thread: EK-TM4C123GXL

Hi, 

I am trying to run OpenOCD from Eclipse and see the following error. 

Open On-Chip Debugger 0.10.0 (2017-08-21) [https://github.com/sysprogs/openocd]
Licensed under GNU GPL v2
For bug reports, read
openocd.org/.../bugs.html
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 500 kHz
Info : RCLK (adaptive clock speed)
Error: open failed
in procedure 'init'
in procedure 'ocd_bouncer'

My arg and config file is 

-f board/ek-tm4c123gxl.cfg