zephyrproject-rtos/trusted-firmware-a
Nov 2024 – Dec 2024
2 Months active
Languages Used
CMakefileRST
Technical Skills
Bootloader DevelopmentC ProgrammingDevice DriversDevice TreeDocumentationDriver Development
Abhi Singh
PROFILE
Abhi Singh
Over a two-month period, contributed to zephyrproject-rtos/trusted-firmware-a by implementing end-to-end Measured Boot and TPM2.0 module integration for the Raspberry Pi 3. Developed a GPIO-based SPI driver in C to enable communication with discrete TPM hardware, supporting hardware-backed attestation and secure boot flows. Enhanced the threat model documentation to address new security features and platform-specific mitigations. Refactored memory management and build processes for improved maintainability. The work established a foundation for broader TPM support and strengthened the security posture of Trusted Firmware-A, demonstrating expertise in embedded systems, device driver development, and low-level firmware engineering using C and Makefile.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
9Total
Bugs
1
Commits
9
Features
3
Lines of code
880
Activity Months2
Your Network
679 peopleSame Organization
@arm.com538
Work History
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024: Key feature delivered - TPM2.0 module integration for Raspberry Pi 3 in zephyrproject-rtos/trusted-firmware-a. Implemented Infineon SLB9670 GPIO SPI configuration, chip reset sequencing, and bitbang driver initialization, establishing groundwork for TPM communications and broader platform compatibility. Major bugs fixed: none reported for this feature during the period. Overall impact: enables secure TPM-based attestation and stronger hardware security for Trusted Firmware-A with ready-to-extend TPM support across platforms. Technologies/skills demonstrated: embedded SPI/GPIO configuration, low-level driver development, TPM protocol basics, and secure boot integration. Commit reference: 6fa56e93679631b0d23c88e962b9e40c97971942.
1 Commits • 1 Features
Dec 1, 2024December 2024: Key feature delivered - TPM2.0 module integration for Raspberry Pi 3 in zephyrproject-rtos/trusted-firmware-a. Implemented Infineon SLB9670 GPIO SPI configuration, chip reset sequencing, and bitbang driver initialization, establishing groundwork for TPM communications and broader platform compatibility. Major bugs fixed: none reported for this feature during the period. Overall impact: enables secure TPM-based attestation and stronger hardware security for Trusted Firmware-A with ready-to-extend TPM support across platforms. Technologies/skills demonstrated: embedded SPI/GPIO configuration, low-level driver development, TPM protocol basics, and secure boot integration. Commit reference: 6fa56e93679631b0d23c88e962b9e40c97971942.
December 2024
November 2024
8 Commits • 2 Features
Nov 1, 2024November 2024: Implemented end-to-end Measured Boot for Raspberry Pi 3 within Trusted Firmware-A, enabling hardware-backed attestation, cross-stage logging, and a GPIO-based SPI interface to dTPM. This month also delivered documentation updates for the threat model and targeted internal maintenance to improve build cleanliness and code reuse. The work strengthens security posture, supports compliant attestation flows, and lays groundwork for broader MBOOT support across platforms.
November 2024
8 Commits • 2 Features
Nov 1, 2024November 2024: Implemented end-to-end Measured Boot for Raspberry Pi 3 within Trusted Firmware-A, enabling hardware-backed attestation, cross-stage logging, and a GPIO-based SPI interface to dTPM. This month also delivered documentation updates for the threat model and targeted internal maintenance to improve build cleanliness and code reuse. The work strengthens security posture, supports compliant attestation flows, and lays groundwork for broader MBOOT support across platforms.
Activity
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Quality Metrics
Correctness88.8%
Maintainability86.8%
Architecture86.8%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CMakefileRST
Technical Skills
Bootloader DevelopmentC ProgrammingDevice DriversDevice TreeDocumentationDriver DevelopmentEmbedded SystemsFirmware DevelopmentGPIOGPIO ControlMeasured BootMemory ManagementRefactoringSPISPI Communication
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