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• Current  Definition-of-Done Status:  Stable
• Next  Definition-of-Done Status::  Freeze
  • (allows start of formal public review period)
• Definition of Done Status Top Sheet

Scalar Crypto Specification:

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• The results of the review can be seen here. Scalar Crypto Arch Review Results.pdf
• After discussion within the task group, the following changes will be made to the spec, with the changes expected to land in 0.9.4 before the end of August.
  • Stop overlapping the aes32 and aes64 opcodes. See riscv/riscv-opcodes#77
  • Clarify the effect of misa.k
  • Some updates to the entropy source and zkt detailed here.
  • Miscellaneous editorial issues.
• Some downstream tasks for our group development partners once 0.9.4 lands:

Architecture Tests

• Test plan for the scalar-crypto specific instructions is available.
• Imperas have a complete set of tests, written to the existing test plan, for the scalar crypto instructions and the bitmanip instructions we borrow.
  • These have been merged into the main test suite as of PR#177, with many thanks to Imperas for the contribution.
    • Spike, OVPSim and Sail all agree on the test signatures.
  • They form a base we can use to develop prototype implementations / Spike / SAIL / QEMU very easily and quickly.
• Upstream Spike support for enabling it to work with the K test suite is being added in PR#687.
• IIT Madras are also looking at writing the scalar crypto tests for integration into the official architectural tests repo as well.
  • Agreed SoW for IITM
  • They are re-implementing the tests as part of the blessed coverage and test generation tooling.
    • Making good progress with the simple test patterns for scalar-crypto specific instructions A/O April 7'th '21
  • We then switch over to using the IIT tests when they are finished, since they will be easier to maintain/extend going forward than the Imperas tests.
• YAML config changes for K have been merged in. See here.
• Status from IIT Madras as on 17-Jun:
  • All test cases and coverage reports has been generated and presented.
  • If there are any changes in future on these that is required in future, IIT Madras will enhance the scripts as per requirements.
• Status from IIT Madras as on 20-May:
  • Real world test cases as per the test plan has been generated.
  • Currently waiting for the fixed toolchain with K extension from PLCT to test the generated test cases. All the test cases are working fine when we run against the patched toolchain
  • A PR has been raised with a pull request for this suite to be reviewed and merged in the riscv-arch tests github repo.
• Status from IIT Madras as on 12-May:
  • Coverage report for all developed cases in CTG/ISAC has been generated and it is reported as 100%
  • Currently real world test cases are being developed as per test plan and will be completed and send for review by beginning of next week
• Status from IIT Madras as on 05-May:
  • Resolved issues in running the rv64ik toolchain after interacting with PLCT and compile the relevant tests generated from CTG and run them on spike
  • Currently resolving issues in the running the rv64ibk toolchain. Once this is done, will generate the coverage report of the test cases built till now and share with team.
• Status from IIT Madras as on 26-Apr:
  • Completed the coverage points specification for all 32-bit and 64-bit instructions
  • Generated test cases from the coverage points
  • Currently working on trying to install the scalar crypto enabled toolchain.

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