flipperdevices/u-boot
Sep 2025 – Sep 2025
1 Month active
Languages Used
CKconfig
Technical Skills
ARM ArchitectureConfigurationDevice DriversEmbedded SystemsKernel ConfigurationKernel Development
Kunihiko Hayashi
PROFILE
Kunihiko Hayashi
Worked on enhancing embedded systems reliability and portability across two repositories, home-assistant/buildroot and flipperdevices/u-boot. Addressed a symlink portability issue in U-Boot tooling by replacing absolute paths with relative ones, ensuring fw_printenv and fw_setenv function correctly regardless of installation directory. Later, implemented GICv3 Interrupt Controller support for QEMU SBSA ARMv8 targets, introducing precise configuration changes and correcting misconfigurations to improve virtualization readiness and platform stability. Leveraged expertise in ARM architecture, build system configuration, and kernel development, using C, Kconfig, and Makefile to deliver targeted, maintainable solutions that reduce deployment failures and support SBSA compliance in diverse environments.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
4Total
Bugs
1
Commits
4
Features
1
Lines of code
4
Activity Months2
Your Network
750 peopleSame Organization
@socionext.com1
Shared Repositories
749
Work History
September 2025
3 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary focused on delivering GICv3 Interrupt Controller support in QEMU SBSA ARMv8 for flipperdevices/u-boot, implementing precise configuration changes, and hardening the build against misconfigurations. Key outcomes include enabling GICv3 with correct base addresses, fixing typos to ensure proper gating via GIC_V3_ITS, and removing an erroneous GICV3 definition to prevent accidental activation. These changes enhance virtualization readiness, platform stability, and SBSA compliance for ARMv8 targets.
3 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary focused on delivering GICv3 Interrupt Controller support in QEMU SBSA ARMv8 for flipperdevices/u-boot, implementing precise configuration changes, and hardening the build against misconfigurations. Key outcomes include enabling GICv3 with correct base addresses, fixing typos to ensure proper gating via GIC_V3_ITS, and removing an erroneous GICV3 definition to prevent accidental activation. These changes enhance virtualization readiness, platform stability, and SBSA compliance for ARMv8 targets.
September 2025
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for home-assistant/buildroot focusing on stability and portability of U-Boot tooling. Implemented a portability fix for fw_printenv/fw_setenv symlinks by replacing an absolute path with a relative path, ensuring the symlink resolves correctly regardless of installation directory. This reduces runtime failures and enhances cross-environment reliability.
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for home-assistant/buildroot focusing on stability and portability of U-Boot tooling. Implemented a portability fix for fw_printenv/fw_setenv symlinks by replacing an absolute path with a relative path, ensuring the symlink resolves correctly regardless of installation directory. This reduces runtime failures and enhances cross-environment reliability.
Activity
Loading activity data...
Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CKconfigMakefile
Technical Skills
ARM ArchitectureBuild System ConfigurationConfigurationDevice DriversEmbedded SystemsKernel ConfigurationKernel DevelopmentPortability
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
home-assistant/buildroot
Apr 2025 – Apr 2025
1 Month active
Languages Used
Makefile
Technical Skills
Build System ConfigurationPortability