[util,bazel] integrate flash scrambling with bazel

This integrates the flash scrambling script with Bazel to enable
pre-scrambling flash images before they are backdoor loaded in DV and
Verilator simulations.

A key feature to enable such is to pass the OTP VMEM image to the flash
scrambling script so the flash scrambling key seeds, and enablement
flag, can be read out and decoded for use.

While this commit reads out the scrambling key seeds, they still must be
processed to produce the actual scrambling keys (as is done in HW).
Additionally, the scrambling enablement flag must be read to determine
whether or not to enabling scrambling within the pre-preprocessing
script. These will both happen in a follow up.

Signed-off-by: Timothy Trippel <ttrippel@google.com>
5 files changed
tree: bfc0aae624456a11431ccf39de374eeb099ab29c
  1. .github/
  2. ci/
  3. doc/
  4. hw/
  5. quality/
  6. release/
  7. rules/
  8. site/
  9. sw/
  10. third_party/
  11. util/
  12. .bazelignore
  13. .bazelrc
  14. .bazelversion
  15. .clang-format
  16. .dockerignore
  17. .flake8
  18. .gitattributes
  19. .gitignore
  20. .style.yapf
  21. .svlint.toml
  22. .svls.toml
  23. apt-requirements.txt
  24. azure-pipelines.yml
  25. bazelisk.sh
  26. book.toml
  27. BUILD.bazel
  28. check_tool_requirements.core
  29. CLA
  33. mypy.ini
  34. python-requirements.txt
  35. README.md
  36. SUMMARY.md
  37. tool_requirements.py
  38. topgen-reg-only.core
  39. topgen.core
  41. yum-requirements.txt


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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.

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