Total data size always print as zero.
arm-none-eabi-size --format=berkeley --totals SW_V1_0_0.elf
text data bss dec hex filename
161148 0 16448 177596 2b5bc SW_V1_0_0.elf
161148 0 16448 177596 2b5bc (TOTALS)
Hi@SivaB
You should check your application; based on the printed results, you currently have no initialized RAM variables that require load from flash.