Hello Team,
With the existing JLink.py library i have modified and able to flash multiple *.bin files in single instance/Job. I have used method : Jlink in boot: 
But On the Renesas boards, After flash the binaries through Debugger Say JLink,
Will get U-boot prints at ttyACM0. I can see the prints through ser2net telnet host.
Q1. How to send command at uboot level while using JLink boot method. I need to send run xa_boot from uboot prompt: =>
Below is sample Job description :
- boot:
    method: jlink
    prompts: ["=>"]
    commands: ["run xa_boot"]
    timeout:
      minutes: 5i am getting following error :
Invalid job definition:extra keys not allowed @ data['actions[1]']['boot']['jlink']['prompts']
I tried with out prompts and commands key values in job description Job terminated once the flash has done.
Attached logs for reference:
Looking forward for your kind response
Thanks 
Regards
Nagendra S