sec_cm_double_lfsr_testplan.hjson

// Copyright lowRISC contributors (OpenTitan project).
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0
{
  testpoints: [
    {
      name: prim_double_lfsr_check
      desc: ''' Verify that violating prim_double_lfsr LFSR properties generate a fatal alert.

            Stimulus:
            - At the falling edge (non-active edge), force one of the LFSR to a different value than
              the other's.
            - Randomly force the LFSR back to a normal value to ensure the error is latched and
              won't go away until reset.
            - Within the next few cycles, the violation of hardened LFSR property should
              generate a fatal alert.
            - Repeat for ALL prim_double_lfsr instances in the DUT.

            Checks:
            - Check that fatal alert is triggered.
            - Check that err_code/fault_status is updated correctly and preserved until reset.
            - Verify any operations that follow fail (as applicable).
            '''
      stage: V2S
      tests: ["{name}_sec_cm"]
    }
  ]
}