Application binary need to fill with pre-fill data for unused area during generation

[Kumaresan]

Hi Team,
During Application and bootloader binary file generation, unused part of allocation need to fill with pre-fill values(0xFF or 0x00).
Example: Application ROM allocated 1MB, but really used 512KB then remaining 512KB need to fill with pre-fill values.

[Kumaresan]

any update on this topic?