flipperdevices/u-boot
Mar 2025 – Jan 2026
2 Months active
Languages Used
C
Technical Skills
Device TreeEmbedded SystemsFirmware DevelopmentC programmingembedded systemsfirmware development
Masahisa Kojima
PROFILE
Masahisa Kojima
Worked on the flipperdevices/u-boot repository to enhance boot reliability and persistent memory support for embedded systems. Developed PMEM support by adding Device Tree nodes and integrating fdt_fixup_pmem_region, ensuring the operating system retains access to RAM-based ISOs after ExitBootServices. Updated documentation and developer guidance to improve reproducibility and onboarding for PMEM-related changes. Addressed a critical bug in EFI Boot Image Handling, enabling bootm to correctly load gzip-compressed images on EFI firmware by passing the appropriate load address. Utilized C programming, Device Tree, and firmware development skills to deliver targeted improvements that reduced boot failures and improved system stability.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
57
Activity Months2
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Aparna PatraMember
Aashvij ShenaiMember
Alexander DahlMember
Work History
January 2026
1 Commits
Jan 1, 2026January 2026 focused on stabilizing the EFI boot path in flipperdevices/u-boot. Delivered a critical bug fix for EFI Boot Image Handling that enables bootm to load gzip-compressed images on EFI firmware by passing the correct load address, preventing boot failures. The patch (e82f01a236b3bff89292703f732ede8f740b50f4) includes handling adjustments and was validated by the team (Tested-by: Kunihiko Hayashi). No new features shipped this month; the primary value came from reliability improvements to reduce customer-facing boot failures and support escalations.
1 Commits
Jan 1, 2026January 2026 focused on stabilizing the EFI boot path in flipperdevices/u-boot. Delivered a critical bug fix for EFI Boot Image Handling that enables bootm to load gzip-compressed images on EFI firmware by passing the correct load address, preventing boot failures. The patch (e82f01a236b3bff89292703f732ede8f740b50f4) includes handling adjustments and was validated by the team (Tested-by: Kunihiko Hayashi). No new features shipped this month; the primary value came from reliability improvements to reduce customer-facing boot failures and support escalations.
January 2026
March 2025
1 Commits • 1 Features
Mar 1, 2025Concise monthly summary for March 2025 focusing on key accomplishments, business value, and technical achievements for the u-boot repository.
March 2025
1 Commits • 1 Features
Mar 1, 2025Concise monthly summary for March 2025 focusing on key accomplishments, business value, and technical achievements for the u-boot repository.
Activity
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Quality Metrics
Correctness90.0%
Maintainability80.0%
Architecture80.0%
Performance70.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
C programmingDevice TreeEmbedded SystemsFirmware Developmentembedded systemsfirmware development
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