U-Boot TFTP Block Negotiation: Inspect the Request, Cap and Server Reply
Distinguish the configured TFTP size from its locally capped request and negotiated active size, including download/upload asymmetry.
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U-Boot sf probe: An Explicit Speed Changes the Device-Binding Path
Trace why supplying sf probe speed changes from existing-child lookup to a compatibility helper capable of dynamic flash binding.
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U-Boot NAND Reads: Budget Physical Span When Bad Blocks Are Skipped
Separate useful main-data length from skip-bad physical span and from raw page-plus-OOB buffer representation.
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U-Boot UBI Selection: A Failed Switch Does Not Preserve the Previous Attachment
Trace UBI selection as a destructive attachment transition: same-name requests short-circuit, while a failed different-name switch leaves prior UBI/UBIFS state detached.
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U-Boot gpt verify: Know Which Fields the Layout Check Actually Compares
Define the v2025.01 GPT verifier contract from its actual fields and control flow, including extendable final partitions and independent backup validation.
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U-Boot Binman Inputs: Detect Stale Files and Missing-Blob Success Before Packaging
Audit Binman first-match input resolution, missing/fake content allowances and unsupported cross-image dependencies before promoting a layout.
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U-Boot setexpr Widths: Separate Hexadecimal Operands from Memory-Read Size
Separate hexadecimal parsing, pointer-read suffixes and unsigned-long arithmetic in numeric setexpr.
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U-Boot Hush Failure Flow: Keep a Logging Command from Masking a Failed Load
Trace old Hush aggregate status through run variables and preserve failed prerequisites across logging commands.
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Yocto Read-Only Root Filesystems: Identify Postinstall Work That Cannot Wait for First Boot
Diagnose post-install failures in Yocto read-only images through offline-root paths, native tool dependencies, explicit deferral and the limited delayed-postinst feature exception.
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Yocto Alternatives: Resolve Competing Providers of the Same Command
Diagnose Yocto command alternatives through package-scoped registration, public link and provider target paths, packaging-time renaming and install/remove transitions.
