Develop and maintain IBM power processor proprietary and open source (QEMU) simulation models using primarily C and running on Linux.

Developing "Host Boot" firmware for power-based IBM servers.

Responsible for finding problems in power management IP blocks during pre-silicon, post-silicon and manufacturing phases.• Ensured SoC power management functionality by developing test plans, writing bare metal device drivers and test applications as well as developing test tools for general debug and chip characterization.• Reduced development time for the team by implementing a generic IPC library for synchronization between cores in a multi-core chip.• Developed a python library that enabled calling functions on a target device remotely from a host device, removing the need to implement procedures on both platforms and resulting in decreased tool development time.• Increased test effectiveness (stress) by implementing a timer queue facility allowing for multiple tests to share a single hardware timer resource and still run concurrently.• Developed support for running multiple voltage and frequency test patterns without needing to reboot the system resulting in a 20% test time reduction.• Designed and implemented an extendable scripting language enabling test developers to easily modify or create their own voltage and frequency test patterns for testing various SoC IP blocks.

• Discovered issues earlier by performing virtual bring up using Mambo and Simics.• Designed and implemented generic IPC API for multiple power management CPU’s within server SoC communicating using interrupts and shared memory space.• Reduced development time and improved serviceability by implementing trace facility.• Partnered with IBM research and processor development teams, supporting use of processor critical path monitors, reducing voltage and saving power.• Interfaced with manufacturing and characterization teams, providing tools and procedures for testing new processors and systems.• Improved code quality, found defects earlier by fostering an environment of learning while acting as code review moderator.• Designed and developed I2C device driver for Renesas SH microcontroller running ThreadX, reducing size by factor of 6 over previous design.• Originated real time energy management code, operating on 1 millisecond interval.• Designed and implemented I2C Linux device driver supporting both master and slave functions on PowerPC processor.• Wrote I2C debug tool for sending arbitrary I2C transactions to slave devices, adopted by several organizations in IBM outside of firmware development.• Served as local “go to guy” for all issues related to I2C.