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Liora Guo

PROFILE

Liora Guo

Worked on firmware and hardware integration for the OpenBIC project, focusing on power management, fault detection, and release traceability across Sentinel Dome, Wailua Falls, and Emerald Springs platforms. Developed and maintained C-based device drivers and embedded systems code to manage voltage regulator faults, enhance event logging, and implement robust interrupt handling. Improved firmware versioning processes in the facebook/OpenBIC and Wiwynn/OpenBIC repositories, ensuring consistent build identification and streamlined release cycles. Introduced platform-specific mechanisms for VR sensor access control, SEL logging, and GPIO-based fault detection, resulting in improved system reliability, maintainability, and reduced mean time to recovery during power transitions.

Overall Statistics

Feature vs Bugs

77%Features

Repository Contributions

17Total
Bugs
3
Commits
17
Features
10
Lines of code
1,335
Activity Months10

Work History

May 2026

2 Commits • 2 Features

May 1, 2026

Concise monthly summary for 2026-05 focusing on business value, reliability, and technical accomplishments across Wiwynn/OpenBIC and facebook/OpenBIC. Highlights include feature delivery, improved fault detection, and maintainable BIC stack improvements that reduce MTTR and standardize versioning across platforms.

April 2026

1 Commits • 1 Features

Apr 1, 2026

April 2026 focused on release readiness and version control for the OpenBIC project. Delivered a targeted version bump for Emerald Springs BIC obgc2-es-v2026.14.01, completed code review, and validated build and BIC version checks to ensure compatibility and predictable deployments.

February 2026

2 Commits • 1 Features

Feb 1, 2026

February 2026 — Reliability and observability improvements for facebook/OpenBIC. Delivered two targeted items: (1) Platform-specific VR sensor access control to prevent false MB_VR alerts during DC power transitions via a GC2-ES vr_access override that polls VR data only after DC power is confirmed on. Commits include 86de62d8be089e888ee1f9003d4fdc20e643c086 with PR #2663. (2) Enhanced SMI interrupt handling for GPIO stuck-low detection: introduced an SMI GPIO interrupt handler that monitors IRQ_SMI_ACTIVE_BMC_N and starts a 90-second timer; if the GPIO remains low, BIC reports an SMI event to the BMC, and deassertion is also reported. Commit c15ec9aa7ed140f27336c8d3f89c330bc620bcdc with PR #2670. These changes reduce false sensor events, improve debugging visibility, and enhance power-state robustness across DC transitions and SMI scenarios.

October 2025

1 Commits • 1 Features

Oct 1, 2025

October 2025 monthly summary for facebook/OpenBIC: Focused on firmware release readiness and platform consistency across Sentinel Dome (sd) and Wailua Falls (wf). The release centers on a targeted firmware update with clear versioning to support validation, rollout readiness, and customer deployments.

September 2025

2 Commits

Sep 1, 2025

September 2025 focused on correcting firmware versioning headers for the OpenBIC components Sentinel Dome (sd) and Wailua Falls (wf) to align BIC_FW_WEEK with the 2025 weekly release cycle. Updated version header macros to reflect 2025.36.01 and the 39th week of 2025 across sd/wf, fixing incorrect BIC_FW_WEEK values and ensuring consistent versioning in downstream builds. This work improves build reproducibility, prevents release-header drift, and reduces customer-facing patch risk.

August 2025

1 Commits • 1 Features

Aug 1, 2025

August 2025: Delivered a firmware versioning update for the BIC platforms across Sentinel Dome (sd) and Wailua Falls (wf). Bumped firmware version to 2025.33.01 and updated versioning macros in platform-specific headers to ensure consistent release tracking and build reproducibility. The change is captured in a single, well-documented commit for traceability: fby4: sd/wf: Version Commit for 2025.33.01 (#2487) (commit 25ceebc66f0e05945fcec693a37a7c850eab86fc).

July 2025

4 Commits • 2 Features

Jul 1, 2025

Month: 2025-07 — OpenBIC (facebook/OpenBIC). This period focused on delivering firmware version tracking improvements and VR fault logging enhancements, with attention to release governance, build identification, and WF rail support across multiple releases.

June 2025

1 Commits • 1 Features

Jun 1, 2025

June 2025 summary for facebook/OpenBIC: Delivered firmware versioning and release tracking for BIC platforms (sd and wf) as part of the release process. Updated firmware version to 2025.23.01 for Sentinel Dome (sd) and Wailua Falls (wf) and captured the change in a traceable commit. This work enhances release readiness, traceability, and platform compatibility validation for the 2025.23.01 release.

May 2025

2 Commits

May 1, 2025

May 2025 Monthly Summary - facebook/OpenBIC project Key focus: firmware versioning correctness across build artifacts for Sentinel Dome (sd) and Wailua Falls (wf).

April 2025

1 Commits • 1 Features

Apr 1, 2025

April 2025 - OpenBIC (facebook/OpenBIC): Implemented a VR fault clearance mechanism to improve stability across AC slot cycles. The change adds plat_pldm_sensor_clear_vr_fault to clear VR fault bits via I2C after slot AC cycling, ensuring the VR fault state is reset after power cycling and enabling faster recovery. This work is tracked by commit 657b72dd35ce73407bd4bf514db7d46a23d40d37 (#2321). No major bugs fixed in this scope. Business value: higher reliability during power cycling, reduced field downtime, and clearer fault visibility.

Activity

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Quality Metrics

Correctness97.6%
Maintainability94.2%
Architecture96.4%
Performance94.2%
AI Usage21.2%

Skills & Technologies

Programming Languages

C

Technical Skills

C programmingDevice DriversEmbedded SystemsEvent LoggingFault HandlingFirmware DevelopmentGPIO managementHardware ControlHardware InteractionI2C CommunicationPower ManagementVersion Controlembedded systemsfirmware developmenthardware interfacing

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

facebook/OpenBIC

Apr 2025 May 2026
10 Months active

Languages Used

C

Technical Skills

Embedded SystemsHardware ControlI2C CommunicationPower ManagementFirmware DevelopmentVersion Control

Wiwynn/OpenBIC

May 2026 May 2026
1 Month active

Languages Used

C

Technical Skills

embedded systemsfirmware development