| commit | 73cd46c38e9744bded69312e4ed146a959844b1b | [log] [tgz] |
|---|---|---|
| author | Greg Chadwick <gac@lowrisc.org> | Thu Nov 12 11:55:56 2020 +0000 |
| committer | Greg Chadwick <gac@lowrisc.org> | Fri Nov 13 09:16:58 2020 +0000 |
| tree | d4529eec73263e2f7cdf9d913a1c57a8b7d05a30 | |
| parent | 3b50be13e2c60427833bee2250185e70b6ebc513 [diff] |
[otbn] Fix flag enables in otbn_alu_bignum `adder_update_flags_en` and `logic_update_flags_en` only had meaning if `flag_en` in `operation_i` was set. However the `flags_d` mux was implemented via a `unique case (1'b1)` statement that doesn't take this into account violating the `unique`. This introduces `adder_update_flags_en_raw` and `logic_update_flags_en_raw` which then have `flag_en` factored in to produce the actual flag enable signals. Fixes #4168 Signed-off-by: Greg Chadwick <gac@lowrisc.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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