flipperdevices/u-boot
Jun 2025 – Sep 2025
3 Months active
Languages Used
CKconfigMakefile
Technical Skills
Driver DevelopmentEmbedded SystemsKernel DevelopmentBootloader ConfigurationBuild System ConfigurationDebugging
Jan Kiszka
PROFILE
Jan Kiszka
Jan Kiszka contributed to the flipperdevices/u-boot and geerlingguy/linux repositories by developing and stabilizing features for embedded systems, focusing on bootloader and driver reliability. He implemented EFI HTTP Boot DHCP support and improved cross-build stability, using C, Kconfig, and Makefile to ensure robust network boot operations and maintainable build processes. Jan enhanced the EFI STMM driver’s memory safety and error handling, aligning it with UEFI standards, and improved OP-TEE debugging by refining log output and stabilizing unit tests. His work demonstrated depth in kernel development, system programming, and debugging, resulting in more reliable firmware and streamlined maintenance workflows.
Overall Statistics
Feature vs Bugs
57%Features
Repository Contributions
10Total
Bugs
3
Commits
10
Features
4
Lines of code
121
Activity Months3
Your Network
1732 people
Work History
September 2025
2 Commits • 1 Features
Sep 1, 2025This month (2025-09) focused on enhancing OP-TEE debugging usability and stabilizing unit tests in flipperdevices/u-boot, delivering clearer logs and more reliable CI builds, enabling faster issue isolation and reducing maintenance overhead.
2 Commits • 1 Features
Sep 1, 2025This month (2025-09) focused on enhancing OP-TEE debugging usability and stabilizing unit tests in flipperdevices/u-boot, delivering clearer logs and more reliable CI builds, enabling faster issue isolation and reducing maintenance overhead.
September 2025
August 2025
7 Commits • 3 Features
Aug 1, 2025Performance-driven monthly summary for 2025-08: Delivered network boot reliability, improved cross-build stability, hardening of EFI STMM driver for memory safety, and API-level maintainability improvements across two repositories.
August 2025
7 Commits • 3 Features
Aug 1, 2025Performance-driven monthly summary for 2025-08: Delivered network boot reliability, improved cross-build stability, hardening of EFI STMM driver for memory safety, and API-level maintainability improvements across two repositories.
June 2025
1 Commits
Jun 1, 2025In June 2025, the flipperdevices/u-boot repo focused on stabilizing the MMC RPMB subsystem by reverting an earlier change to the RPMB driver's R1 response type and tightening header usage. The revert ensures compatibility with downstream commits and hardware expectations, while directly including the byteorder.h header resolves a previous indirect dependency and guards against build fragility. These changes reduce regression risk in RPMB transactions and improve maintenance reliability across affected boards.
1 Commits
Jun 1, 2025In June 2025, the flipperdevices/u-boot repo focused on stabilizing the MMC RPMB subsystem by reverting an earlier change to the RPMB driver's R1 response type and tightening header usage. The revert ensures compatibility with downstream commits and hardware expectations, while directly including the byteorder.h header resolves a previous indirect dependency and guards against build fragility. These changes reduce regression risk in RPMB transactions and improve maintenance reliability across affected boards.
June 2025
Activity
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Quality Metrics
Correctness94.0%
Maintainability90.0%
Architecture94.0%
Performance84.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CKconfigMakefile
Technical Skills
Bootloader ConfigurationBuild System ConfigurationC programmingDebuggingDevice TreeDriver DevelopmentEmbedded SystemsKernel DevelopmentTestingerror handlingfirmware developmentkernel developmentmemory managementsystem programming
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
geerlingguy/linux
Aug 2025 – Aug 2025
1 Month active
Languages Used
C
Technical Skills
C programmingerror handlingfirmware developmentkernel developmentmemory managementsystem programming