Worked on the zephyrproject-rtos/zephyr repository to enhance memory protection unit (MPU) configuration for embedded systems, specifically targeting platforms without flash memory. Addressed a critical bug by implementing conditional compilation in C, ensuring the FLASH_MPU_REGION definition is included only when CONFIG_FLASH_SIZE is present. This approach prevented build-time and runtime errors, improved code maintainability, and aligned with best practices in memory management. Validated the solution on the fvp_aemv8r platform, eliminating edge cases for flash-less configurations. The work streamlined device driver integration and reduced onboarding friction for new hardware, supporting broader adoption of Zephyr across diverse embedded environments.