zephyrproject-rtos/trusted-firmware-a
Dec 2024 – Dec 2024
1 Month active
Languages Used
AssemblyC
Technical Skills
AArch64 architectureARM ArchitectureEmbedded SystemsEmbedded systemsInterrupt HandlingLow-level programming
Andrei Homescu
PROFILE
Andrei Homescu
Worked on the zephyrproject-rtos/trusted-firmware-a repository to enhance secure interrupt handling for AArch64 systems, focusing on stabilizing floating-point and SIMD context restoration. Addressed a critical bug by refactoring the secure interrupt path to use spmd_smc_switch_state with FFA_NORMAL_WORLD_RESUME, ensuring correct restoration of FP registers during secure-to-normal world transitions. Corrected the base register offset for simd_regs_t in the context save and restore routines to prevent incorrect SIMD address handling. Utilized C and Assembly to implement these low-level changes, drawing on expertise in ARM architecture, embedded systems, and interrupt handling to improve system reliability and maintainability.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
0
Lines of code
27
Activity Months1
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4844 peopleSame Organization
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Aadi KapurMember
Aadish GoelMember
Aahil MehtaMember
Work History
December 2024
2 Commits
Dec 1, 2024Month: 2024-12 — Monthly summary for zephyrproject-rtos/trusted-firmware-a focusing on key accomplishments, major bug fixes, and business impact. This period delivered a critical improvement to AArch64 secure interrupt handling by stabilizing FP/SIMD context restoration, and corrected SIMD address handling to ensure robust secure-to-normal world resume. These changes enhance system reliability, security posture, and maintainability of the trusted firmware path.
2 Commits
Dec 1, 2024Month: 2024-12 — Monthly summary for zephyrproject-rtos/trusted-firmware-a focusing on key accomplishments, major bug fixes, and business impact. This period delivered a critical improvement to AArch64 secure interrupt handling by stabilizing FP/SIMD context restoration, and corrected SIMD address handling to ensure robust secure-to-normal world resume. These changes enhance system reliability, security posture, and maintainability of the trusted firmware path.
December 2024
Activity
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Quality Metrics
Correctness95.0%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyC
Technical Skills
AArch64 architectureARM ArchitectureEmbedded SystemsEmbedded systemsInterrupt HandlingLow-level programmingSystem Programming
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