| commit | 620c8c0c07dc0ab05448c0e1ad707d82072f58da | [log] [tgz] |
|---|---|---|
| author | Eunchan Kim <eunchan@opentitan.org> | Mon Aug 29 09:55:28 2022 -0700 |
| committer | Eli Kim <github@elikim.dev> | Tue Sep 06 10:10:51 2022 -0700 |
| tree | 0bd1facfeeca4eb1aab8f3b4ead689430762b7d4 | |
| parent | 94d650983c4bbc06ea6bd84f84aa7b2c27280241 [diff] |
fix(kmac): Not advance the ErrChk FSM in error cases _Related Issue: https://github.com/lowRISC/opentitan/issues/14470 _ The `kmac_errchk` module reports errors in case of SW's mis-config/ mis-control. When the module detects any errors, `kmac_errchk` blocks the SW command and report via **ERR_CODE**. However, the module has advanced to the next state internally. The internal FSM inside the `kmac_errchk` is to track the external and check the correctness. In this commit, the `kmac_errchk` stops moving to the next state in case of `block_swcmd` occurs. It is best to add the block condition in the `always_ff` of the `st`. However, the sparse FSM coding style prevents it from adding the latch enable condition. The issue https://github.com/lowRISC/opentitan/issues/14631 has been created to enhance the macro and the flop module. Signed-off-by: Eunchan Kim <eunchan@opentitan.org>
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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