[bazel] fix bug in the bitstream cache manager

PR #14938 identified a bug in the Bazel bitstreams cache manager script
(`rules/scripts/bitstreams_workspace.py`). Specifically, if the cache
is not yet initialized, and the default bitstream key "HEAD" is provided,
then no local "latest.txt" file will get created to indicate what is the
latest bitstream in the local cache.

Note, the git commit hash ID of the bitstream in the local `latest.txt`
is the "latest" bitstream currently in the local cache on the host, and
may differ from the "latest" bitstream in the GCS bucket if your
current branch is behind the most recent commit to master, which is why
the bitstream cache manager script defaults to pulling down the "latest"
bitstream behind the current HEAD commit.

This should get the Bazel airgapped images autogenerating successfully
again (the job is currently failing due to this bug).

Signed-off-by: Timothy Trippel <ttrippel@google.com>
1 file changed
tree: e97dac5993e2767a9c69b6baaae9225207c5dace
  1. .github/
  2. ci/
  3. doc/
  4. hw/
  5. release/
  6. rules/
  7. site/
  8. sw/
  9. third_party/
  10. util/
  11. .bazelignore
  12. .bazelrc
  13. .bazelversion
  14. .clang-format
  15. .dockerignore
  16. .flake8
  17. .gitattributes
  18. .gitignore
  19. .style.yapf
  20. .svlint.toml
  21. .svls.toml
  22. _index.md
  23. apt-requirements.txt
  24. azure-pipelines.yml
  25. bazelisk.sh
  26. BUILD.bazel
  27. check_tool_requirements.core
  28. CLA
  29. COMMITTERS
  30. CONTRIBUTING.md
  31. LICENSE
  32. mypy.ini
  33. python-requirements.txt
  34. README.md
  35. tool_requirements.py
  36. topgen-reg-only.core
  37. topgen.core
  38. WORKSPACE
  39. yum-requirements.txt
README.md

OpenTitan

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About the project

OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the OpenTitan site and OpenTitan docs for more information about the project.

About this repository

This repository contains hardware, software and utilities written as part of the OpenTitan project. It is structured as monolithic repository, or “monorepo”, where all components live in one repository. It exists to enable collaboration across partners participating in the OpenTitan project.

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The project contains comprehensive documentation of all IPs and tools. You can access it online at docs.opentitan.org.

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