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
Masahisa Kojima contributed to the flipperdevices/u-boot repository by developing persistent memory (PMEM) support in the Device Tree, enabling the operating system to reliably access RAM-based ISO images after ExitBootServices. He implemented the fdt_fixup_pmem_region function in C, ensuring PMEM regions are correctly advertised to the OS and enhancing boot reliability for PMEM-enabled deployments. Kojima also addressed a critical bug in EFI boot image handling, allowing bootm to load gzip-compressed images on EFI firmware by passing the correct load address. His work demonstrated depth in embedded systems and firmware development, focusing on robust boot flows and maintainable documentation.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
57
Activity Months2
Your Network
573 peopleSame Organization
@socionext.com1
Shared Repositories
572
Liya HuangMember
Xu ZhangMember
Anurag DuttaMember
Aswath GovindrajuMember
Akashdeep KaurMember
Aniket LimayeMember
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
Loading activity data...
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
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline