ibex_top_tracing.core

CAPI=2:
# Copyright lowRISC contributors.
# Licensed under the Apache License, Version 2.0, see LICENSE for details.
# SPDX-License-Identifier: Apache-2.0
name: "lowrisc:ibex:ibex_top_tracing:0.1"
description: "Ibex, a small RV32 CPU core with tracing enabled"
filesets:
  files_rtl:
    depend:
      - lowrisc:ibex:ibex_top
      - lowrisc:ibex:ibex_tracer
    files:
      - rtl/ibex_top_tracing.sv
    file_type: systemVerilogSource

parameters:
  # The tracer uses the RISC-V Formal Interface (RVFI) to collect trace signals.
  RVFI:
    datatype: bool
    paramtype: vlogdefine
    default: true

  SYNTHESIS:
    datatype: bool
    paramtype: vlogdefine

  RV32E:
    datatype: int
    default: 0
    paramtype: vlogparam

  RV32M:
    datatype: str
    default: ibex_pkg::RV32MFast
    paramtype: vlogdefine
    description: "RV32M implementation parameter enum. See the ibex_pkg::rv32m_e enum in ibex_pkg.sv for permitted values."

  RV32B:
    datatype: str
    default: ibex_pkg::RV32BNone
    paramtype: vlogdefine
    description: "Bitmanip implementation parameter enum. See the ibex_pkg::rv32b_e enum in ibex_pkg.sv for permitted values."

  RegFile:
    datatype: str
    default: ibex_pkg::RegFileFF
    paramtype: vlogdefine
    description: "Register file implementation parameter enum. See the ibex_pkg::regfile_e enum in ibex_pkg.sv for permitted values."

  ICache:
    datatype: int
    default: 0
    paramtype: vlogparam
    description: "Enable instruction cache"

  ICacheECC:
    datatype: int
    default: 0
    paramtype: vlogparam
    description: "Enable ECC protection in instruction cache"

  BranchTargetALU:
    datatype: int
    default: 0
    paramtype: vlogparam
    description: "Enables separate branch target ALU (increasing branch performance EXPERIMENTAL) [0/1]"

  WritebackStage:
    datatype: int
    default: 0
    paramtype: vlogparam
    description: "Enables third pipeline stage (EXPERIMENTAL) [0/1]"

  BranchPredictor:
    datatype: int
    paramtype: vlogparam
    default: 0
    description: "Enables static branch prediction (EXPERIMENTAL)"

  SecureIbex:
    datatype: int
    default: 0
    paramtype: vlogparam
    description: "Enables security hardening features (EXPERIMENTAL) [0/1]"

  PMPEnable:
    datatype: int
    default: 0
    paramtype: vlogparam
    description: "Enable PMP"

  PMPGranularity:
    datatype: int
    default: 0
    paramtype: vlogparam
    description: "Granularity of NAPOT range, 0 = 4 byte, 1 = byte, 2 = 16 byte, 3 = 32 byte etc"

  PMPNumRegions:
    datatype: int
    default: 4
    paramtype: vlogparam
    description: "Number of PMP regions"

targets:
  default: &default_target
    filesets:
      - files_rtl
    parameters:
      - RVFI=true
    toplevel: ibex_top_tracing

  lint:
    <<: *default_target
    parameters:
      - RVFI=true
      - SYNTHESIS=true
      - RV32E
      - RV32M
      - RV32B
      - RegFile
      - ICache
      - ICacheECC
      - BranchTargetALU
      - WritebackStage
      - BranchPredictor
      - SecureIbex
      - PMPEnable
      - PMPGranularity
      - PMPNumRegions
    default_tool: verilator
    tools:
      verilator:
        mode: lint-only
        verilator_options:
          - "-Wall"
          # RAM primitives wider than 64bit (required for ECC) fail to build in
          # Verilator without increasing the unroll count (see Verilator#1266)
          - "--unroll-count 72"
  format:
    filesets:
      - files_rtl
    parameters:
      - SYNTHESIS=true
      - RVFI=true
    default_tool: veribleformat
    toplevel: ibex_top_tracing
    tools:
      veribleformat:
        verible_format_args:
          - "--inplace"