Worked on the tianocore/edk2-platforms repository, focusing on improving the reliability of serial console initialization in embedded firmware. Addressed a critical bug in SerialPortTerminalLib by refining terminal type validation logic and removing an unnecessary unsigned-to-zero comparison, which resolved a CodeQL warning and reduced the risk of misinterpreting terminal types during initialization. Utilized C for firmware development and applied code analysis skills to simplify conditional logic, enhancing code quality and maintainability. The changes contributed to more robust serial console handling across platforms, supporting stable firmware builds and ensuring downstream integrations benefit from accurate terminal type checks in embedded systems.