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Differential D57221

nanobsd: Offset code partition to a track boundary
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Authored by jlduran on May 24 2026, 11:00 AM.
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rGf1de49f50871: nanobsd: Offset code partition to a track boundary
Summary

Ensure the primary and secondary code partitions start at a proper track
boundary by applying a NANO_SECTS offset in bytes.

Diff Detail

Repository
rG FreeBSD src repository
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Tests Skipped
Build Status
Buildable 73404
Build 70287: arc lint + arc unit

Event Timeline

jlduran created this revision.May 24 2026, 11:00 AM
Herald added a subscriber: imp. · View Herald TranscriptMay 24 2026, 11:00 AM
jlduran requested review of this revision.May 24 2026, 11:00 AM
Harbormaster completed remote builds in B73404: Diff 178518.May 24 2026, 11:00 AM
jlduran added a parent revision: D57220: nanobsd: Account for metadata overhead in code slice.May 24 2026, 11:00 AM
jlduran added a child revision: D57222: nanobsd: Explicitly set image size and secsz in mkimg.
imp accepted this revision.May 24 2026, 11:26 PM

With the proviso that track boundaries are almost useless today, even for MBR which once upon a time was tied to track boundaries.

This revision is now accepted and ready to land.May 24 2026, 11:26 PM
jlduran added a comment.May 24 2026, 11:32 PM
In D57221#1311207, @imp wrote:

With the proviso that track boundaries are almost useless today, even for MBR which once upon a time was tied to track boundaries.

Stay tuned! I'll add a GSoC teaser to the commit message also indicating this fact is soon to be updated as well.

Closed by commit rGf1de49f50871: nanobsd: Offset code partition to a track boundary (authored by jlduran). · Explain WhyMay 27 2026, 12:37 AM
This revision was automatically updated to reflect the committed changes.
jlduran added a commit: rGf1de49f50871: nanobsd: Offset code partition to a track boundary.

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PathSize
tools/
tools/
nanobsd/
6 lines

Diff 178518

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tools/tools/nanobsd/legacy.sh

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