hw/ip/otbn/lint/otbn.waiver

# Copyright lowRISC contributors.
# Licensed under the Apache License, Version 2.0, see LICENSE for details.
# SPDX-License-Identifier: Apache-2.0
#
# waiver file for otbn

waive -rules {IFDEF_CODE} -location {otbn.sv}  \
      -regexp {'otbn_core' instance 'u_otbn_core' contained within `else block} \
      -comment {It's true, and expected.}

waive -rules {CLOCK_USE RESET_USE} -location {otbn_core.sv} \
      -regexp {'(clk_i|rst_ni)' is connected to 'otbn_decoder'} \
      -comment {The module is fully combinatorial, clk/rst are only used for assertions.}

waive -rules {CLOCK_USE RESET_USE} -location {otbn_core.sv}  \
      -regexp {'(clk_i|rst_ni)' is connected to 'otbn_lsu'} \
      -comment {The module is fully combinatorial, clk/rst are only used for assertions.}

waive -rules {CLOCK_USE RESET_USE} -location {otbn_core.sv}  \
      -regexp {'(clk_i|rst_ni)' is connected to 'otbn_alu_base'} \
      -comment {The module is fully combinatorial, clk/rst are only used for assertions.}

waive -rules {RESET_USE} -location {otbn_core.sv}  \
      -regexp {'rst_ni' is connected to 'otbn_instruction_fetch'} \
      -comment {The only flop in this module is not reset.}

waive -rules {ONE_BRANCH} -location {otbn_decoder.sv}  \
      -comment {For consistency in the decoder some case statements have only one branch.}

waive -rules {HIER_NET_NOT_READ NOT_READ} -location {otbn.sv}  \
      -regexp {(Net|Signal) 'imem_wmask_bus' is not read from} \
      -comment {Signal is used in an assertion.}

waive -rules {CLOCK_USE RESET_USE} -location {otbn_alu_bignum.sv otbn_rf_bignum_ff.sv otbn_core.sv} \
      -regexp {'(clk_i|rst_ni)' is connected to '(prim_onehot_mux|otbn_mac_bignum)' port} \
      -comment {The module is fully combinatorial, clk/rst are only used for assertions.}

waive -rules {CLOCK_USE RESET_USE} -location {otbn_instruction_fetch.sv} \
      -regexp {'(clk_i|rst_ni)' is connected to 'otbn_predecode' port} \
      -comment {The module is fully combinatorial, clk/rst are only used for assertions.}