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For people not readily familiar with the BDB acronym, expand it in a few README files and usage strings. BUG=None TEST=looked at help output BRANCH=None Change-Id: I2523e1a289815dd0eaea093c086bc75093579808 Reviewed-on: https://chromium-review.googlesource.com/414244 Commit-Ready: Mike Frysinger <vapier@chromium.org> Tested-by: Mike Frysinger <vapier@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org> Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
48 lines
1.6 KiB
Plaintext
48 lines
1.6 KiB
Plaintext
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Here's what's what in the firmware/ directory.
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bdb/
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Code for managing Boot Descriptor Blocks (BDB).
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include/
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lib/
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These are the original structures and APIs used in the earliest
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Chromebooks and continuing through 2014. It never had a version as such to
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begin with, but we now refer to this implementation as "vboot1" or
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"vboot version 1.0".
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linktest/
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stub/
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These are stubs used to link the vboot1 libraries into host-side test
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executables so we can run some tests on the build machine instead of a
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Chromebook.
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2lib/
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In 2014 we began work on a new vboot API. The first step was just a
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refactoring and renaming of the verification API. The public functions and
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external headers that are exported for use by the Chrome OS firmware (or
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anything else that wants to use vboot) live in here. The internal
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structures and implementations go elsewhere.
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lib20/
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This is an early implementation of the public (2lib/) API. It is
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binary-compatible with vboot1, so although the interface details are
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different, any existing on-device structures or signatures created by the
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vboot1 tools can be validated using this implementation.
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This was deployed slightly before it was ready. That's not a problem,
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thanks to the binary compatibility, but this directory will be abandoned
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Real Soon Now, except for the product support branches.
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lib21/
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This is where the current development of the second-generation vboot API
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is taking place. It uses the public (2lib/) API, but will NOT be binary
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compatible with vboot1 structs. Because of the early release of the lib20
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stuff, we're actually calling this lib21.
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