Board-level Linux integration, U-Boot, device trees, kernel drivers and peripheral bring-up. Separate power and hardware checks from software adaptation, and define a recoverable boot path.
Diagnose Yocto build disk failures by separating free blocks from inodes, locating the pressured filesystem, and choosing cleanup and monitoring with explicit rebuild costs.
Diagnose a nonbooting Yocto Wic image by tracing consumed artifacts, partition geometry, identifiers, source plugins, and generated boot references.
Trace extlinux APPEND replacement, repeated self-reference, retained arguments and expansion-length handling through the FDT handoff hook.
Trace indexed button-command mappings, stop-on-gap behavior, state errors and first-pressed command continuation.
Version the script container, exact selector and relevant input contract alongside the U-Boot binary to make policy drift reproducible.
Connect active SPL size assertions to physical image, BSS and runtime-memory budgets before accepting a driver or raising a limit.
Trace the FIT container address, selected payload placement and architecture-specific entry behavior as separate release assertions.
Trace Fastboot MMC name substitution and lookup precedence, including retained aliases and special-target exclusions.
Separate DHCP binding, artifact selection, actual transfer and optional execution using the tagged command return paths.
Evaluate Yocto runtime package feeds against supported base versions, controlled feed snapshots, interrupted installation states, and product recovery requirements.