[chip dv xcelium] Fix bug in fault injection code

In the clkmgr escalation reset test vseq, we use the prim_cnt_if
sec cm proxy class to inject a fault. This is documented in our
sec cm verification infra doc page.

Xcelium does not like hierarchical referencing of class instances
declared inside an interface, and interestingly, the LRM is not
clear about this being allowed. Consequenly, VCS allows it but
Xcelium does not.

THis commit uses an alternative approach to extract the proxy class
instance - search the sec_cm_if_proxy_q defined in the sec_cm_pkg.
To achieve this, the following updates are made:
- Move find_sec_cm_if_proxy() method defined in an LC ctrl block level
  test vseq - we an reuse this at the full chip. Moved it to
  sec_cm_pkg instead.
- Made associated changes in LC ctrl block test vseq
- Invoked this method in clkmgr escalation reset test vseq at the chip
  level to find an return the proxy class instance to inject the fault.

Signed-off-by: Srikrishna Iyer <sriyer@google.com>
8 files changed
tree: d2d6d86211e06db6bf5108bc09d0f5fe15f9cbe6
  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.

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