riscv-formal-nmigen/rvfi/cores/minerva/verify.py

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from nmigen.test.utils import *
from ...checks.insn_check import *
from ...checks.pc_fwd_check import *
from ...checks.pc_bwd_check import *
from ...checks.reg_check import *
from ...checks.causal_check import *
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from ...checks.liveness_check import *
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from ...checks.unique_check import *
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from minerva.core import *
from ...insns.isa_rv32i import *
from .memory_bus import *
from collections import namedtuple
RISCVFormalParameters = namedtuple('RISCVFormalParameters',
['ilen', 'xlen', 'csr_misa', 'compressed', 'aligned_mem'])
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class InsnSpec(Elaboratable):
def __init__(self, insn_model):
self.insn_model = insn_model
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def elaborate(self, platform):
m = Module()
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
m.submodules.insn_spec = insn_spec = InsnCheck(
params=RISCVFormalParameters(32, 32, False, False, False),
insn_model=self.insn_model,
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rvformal_addr_valid=lambda x:Const(1))
# Connect Wishbone instruction bus to Minerva CPU
m.submodules.ibus = ibus = MemoryBus()
m.d.comb += ibus.adr.eq(cpu.ibus.adr)
m.d.comb += ibus.dat_w.eq(cpu.ibus.dat_w)
m.d.comb += cpu.ibus.dat_r.eq(ibus.dat_r)
m.d.comb += ibus.sel.eq(cpu.ibus.sel)
m.d.comb += ibus.cyc.eq(cpu.ibus.cyc)
m.d.comb += ibus.stb.eq(cpu.ibus.stb)
m.d.comb += cpu.ibus.ack.eq(ibus.ack)
m.d.comb += ibus.we.eq(cpu.ibus.we)
m.d.comb += ibus.cti.eq(cpu.ibus.cti)
m.d.comb += ibus.bte.eq(cpu.ibus.bte)
m.d.comb += cpu.ibus.err.eq(ibus.err)
# Connect Wishbone data bus to Minerva CPU
m.submodules.dbus = dbus = MemoryBus()
m.d.comb += dbus.adr.eq(cpu.dbus.adr)
m.d.comb += dbus.dat_w.eq(cpu.dbus.dat_w)
m.d.comb += cpu.dbus.dat_r.eq(dbus.dat_r)
m.d.comb += dbus.sel.eq(cpu.dbus.sel)
m.d.comb += dbus.cyc.eq(cpu.dbus.cyc)
m.d.comb += dbus.stb.eq(cpu.dbus.stb)
m.d.comb += cpu.dbus.ack.eq(dbus.ack)
m.d.comb += dbus.we.eq(cpu.dbus.we)
m.d.comb += dbus.cti.eq(cpu.dbus.cti)
m.d.comb += dbus.bte.eq(cpu.dbus.bte)
m.d.comb += cpu.dbus.err.eq(dbus.err)
# Disable all interrupts
m.d.comb += cpu.external_interrupt.eq(0)
m.d.comb += cpu.timer_interrupt.eq(0)
m.d.comb += cpu.software_interrupt.eq(0)
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m.d.comb += insn_spec.reset.eq(0)
m.d.comb += insn_spec.check.eq(1)
m.d.comb += insn_spec.rvfi_valid.eq(cpu.rvfi.valid)
m.d.comb += insn_spec.rvfi_order.eq(cpu.rvfi.order)
m.d.comb += insn_spec.rvfi_insn.eq(cpu.rvfi.insn)
m.d.comb += insn_spec.rvfi_trap.eq(cpu.rvfi.trap)
m.d.comb += insn_spec.rvfi_halt.eq(cpu.rvfi.halt)
m.d.comb += insn_spec.rvfi_intr.eq(cpu.rvfi.intr)
m.d.comb += insn_spec.rvfi_mode.eq(cpu.rvfi.mode)
m.d.comb += insn_spec.rvfi_ixl.eq(cpu.rvfi.ixl)
m.d.comb += insn_spec.rvfi_rs1_addr.eq(cpu.rvfi.rs1_addr)
m.d.comb += insn_spec.rvfi_rs2_addr.eq(cpu.rvfi.rs2_addr)
m.d.comb += insn_spec.rvfi_rs1_rdata.eq(cpu.rvfi.rs1_rdata)
m.d.comb += insn_spec.rvfi_rs2_rdata.eq(cpu.rvfi.rs2_rdata)
m.d.comb += insn_spec.rvfi_rd_addr.eq(cpu.rvfi.rd_addr)
m.d.comb += insn_spec.rvfi_rd_wdata.eq(cpu.rvfi.rd_wdata)
m.d.comb += insn_spec.rvfi_pc_rdata.eq(cpu.rvfi.pc_rdata)
m.d.comb += insn_spec.rvfi_pc_wdata.eq(cpu.rvfi.pc_wdata)
m.d.comb += insn_spec.rvfi_mem_addr.eq(cpu.rvfi.mem_addr)
m.d.comb += insn_spec.rvfi_mem_rmask.eq(cpu.rvfi.mem_rmask)
m.d.comb += insn_spec.rvfi_mem_wmask.eq(cpu.rvfi.mem_wmask)
m.d.comb += insn_spec.rvfi_mem_rdata.eq(cpu.rvfi.mem_rdata)
m.d.comb += insn_spec.rvfi_mem_wdata.eq(cpu.rvfi.mem_wdata)
return m
class InsnTestCase(FHDLTestCase):
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def verify(self):
self.assertFormal(InsnSpec(IsaRV32I), mode="bmc", depth=40, engine="smtbmc --nopresat")
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class PcFwdSpec(Elaboratable):
def elaborate(self, platform):
m = Module()
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
m.submodules.pc_fwd_spec = pc_fwd_spec = PcFwdCheck(
params=RISCVFormalParameters(32, 32, False, False, False),
rvformal_addr_valid=lambda x:Const(1))
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# Connect Wishbone instruction bus to Minerva CPU
m.submodules.ibus = ibus = MemoryBus()
m.d.comb += ibus.adr.eq(cpu.ibus.adr)
m.d.comb += ibus.dat_w.eq(cpu.ibus.dat_w)
m.d.comb += cpu.ibus.dat_r.eq(ibus.dat_r)
m.d.comb += ibus.sel.eq(cpu.ibus.sel)
m.d.comb += ibus.cyc.eq(cpu.ibus.cyc)
m.d.comb += ibus.stb.eq(cpu.ibus.stb)
m.d.comb += cpu.ibus.ack.eq(ibus.ack)
m.d.comb += ibus.we.eq(cpu.ibus.we)
m.d.comb += ibus.cti.eq(cpu.ibus.cti)
m.d.comb += ibus.bte.eq(cpu.ibus.bte)
m.d.comb += cpu.ibus.err.eq(ibus.err)
# Connect Wishbone data bus to Minerva CPU
m.submodules.dbus = dbus = MemoryBus()
m.d.comb += dbus.adr.eq(cpu.dbus.adr)
m.d.comb += dbus.dat_w.eq(cpu.dbus.dat_w)
m.d.comb += cpu.dbus.dat_r.eq(dbus.dat_r)
m.d.comb += dbus.sel.eq(cpu.dbus.sel)
m.d.comb += dbus.cyc.eq(cpu.dbus.cyc)
m.d.comb += dbus.stb.eq(cpu.dbus.stb)
m.d.comb += cpu.dbus.ack.eq(dbus.ack)
m.d.comb += dbus.we.eq(cpu.dbus.we)
m.d.comb += dbus.cti.eq(cpu.dbus.cti)
m.d.comb += dbus.bte.eq(cpu.dbus.bte)
m.d.comb += cpu.dbus.err.eq(dbus.err)
# Disable all interrupts
m.d.comb += cpu.external_interrupt.eq(0)
m.d.comb += cpu.timer_interrupt.eq(0)
m.d.comb += cpu.software_interrupt.eq(0)
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m.d.comb += pc_fwd_spec.reset.eq(0)
m.d.comb += pc_fwd_spec.check.eq(1)
m.d.comb += pc_fwd_spec.rvfi_valid.eq(cpu.rvfi.valid)
m.d.comb += pc_fwd_spec.rvfi_order.eq(cpu.rvfi.order)
m.d.comb += pc_fwd_spec.rvfi_pc_rdata.eq(cpu.rvfi.pc_rdata)
m.d.comb += pc_fwd_spec.rvfi_pc_wdata.eq(cpu.rvfi.pc_wdata)
return m
class PcFwdTestCase(FHDLTestCase):
def verify(self):
self.assertFormal(PcFwdSpec(), mode="bmc", depth=40, engine="smtbmc --nopresat")
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class PcBwdSpec(Elaboratable):
def elaborate(self, platform):
m = Module()
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
m.submodules.pc_bwd_spec = pc_bwd_spec = PcBwdCheck(
params=RISCVFormalParameters(32, 32, False, False, False),
rvformal_addr_valid=lambda x:Const(1))
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# Connect Wishbone instruction bus to Minerva CPU
m.submodules.ibus = ibus = MemoryBus()
m.d.comb += ibus.adr.eq(cpu.ibus.adr)
m.d.comb += ibus.dat_w.eq(cpu.ibus.dat_w)
m.d.comb += cpu.ibus.dat_r.eq(ibus.dat_r)
m.d.comb += ibus.sel.eq(cpu.ibus.sel)
m.d.comb += ibus.cyc.eq(cpu.ibus.cyc)
m.d.comb += ibus.stb.eq(cpu.ibus.stb)
m.d.comb += cpu.ibus.ack.eq(ibus.ack)
m.d.comb += ibus.we.eq(cpu.ibus.we)
m.d.comb += ibus.cti.eq(cpu.ibus.cti)
m.d.comb += ibus.bte.eq(cpu.ibus.bte)
m.d.comb += cpu.ibus.err.eq(ibus.err)
# Connect Wishbone data bus to Minerva CPU
m.submodules.dbus = dbus = MemoryBus()
m.d.comb += dbus.adr.eq(cpu.dbus.adr)
m.d.comb += dbus.dat_w.eq(cpu.dbus.dat_w)
m.d.comb += cpu.dbus.dat_r.eq(dbus.dat_r)
m.d.comb += dbus.sel.eq(cpu.dbus.sel)
m.d.comb += dbus.cyc.eq(cpu.dbus.cyc)
m.d.comb += dbus.stb.eq(cpu.dbus.stb)
m.d.comb += cpu.dbus.ack.eq(dbus.ack)
m.d.comb += dbus.we.eq(cpu.dbus.we)
m.d.comb += dbus.cti.eq(cpu.dbus.cti)
m.d.comb += dbus.bte.eq(cpu.dbus.bte)
m.d.comb += cpu.dbus.err.eq(dbus.err)
# Disable all interrupts
m.d.comb += cpu.external_interrupt.eq(0)
m.d.comb += cpu.timer_interrupt.eq(0)
m.d.comb += cpu.software_interrupt.eq(0)
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m.d.comb += pc_bwd_spec.reset.eq(0)
m.d.comb += pc_bwd_spec.check.eq(1)
m.d.comb += pc_bwd_spec.rvfi_valid.eq(cpu.rvfi.valid)
m.d.comb += pc_bwd_spec.rvfi_order.eq(cpu.rvfi.order)
m.d.comb += pc_bwd_spec.rvfi_pc_rdata.eq(cpu.rvfi.pc_rdata)
m.d.comb += pc_bwd_spec.rvfi_pc_wdata.eq(cpu.rvfi.pc_wdata)
return m
class PcBwdTestCase(FHDLTestCase):
def verify(self):
self.assertFormal(PcBwdSpec(), mode="bmc", depth=40, engine="smtbmc --nopresat")
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class RegSpec(Elaboratable):
def elaborate(self, platform):
m = Module()
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
m.submodules.reg_spec = reg_spec = RegCheck(params=RISCVFormalParameters(32, 32, False, False, False))
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# Connect Wishbone instruction bus to Minerva CPU
m.submodules.ibus = ibus = MemoryBus()
m.d.comb += ibus.adr.eq(cpu.ibus.adr)
m.d.comb += ibus.dat_w.eq(cpu.ibus.dat_w)
m.d.comb += cpu.ibus.dat_r.eq(ibus.dat_r)
m.d.comb += ibus.sel.eq(cpu.ibus.sel)
m.d.comb += ibus.cyc.eq(cpu.ibus.cyc)
m.d.comb += ibus.stb.eq(cpu.ibus.stb)
m.d.comb += cpu.ibus.ack.eq(ibus.ack)
m.d.comb += ibus.we.eq(cpu.ibus.we)
m.d.comb += ibus.cti.eq(cpu.ibus.cti)
m.d.comb += ibus.bte.eq(cpu.ibus.bte)
m.d.comb += cpu.ibus.err.eq(ibus.err)
# Connect Wishbone data bus to Minerva CPU
m.submodules.dbus = dbus = MemoryBus()
m.d.comb += dbus.adr.eq(cpu.dbus.adr)
m.d.comb += dbus.dat_w.eq(cpu.dbus.dat_w)
m.d.comb += cpu.dbus.dat_r.eq(dbus.dat_r)
m.d.comb += dbus.sel.eq(cpu.dbus.sel)
m.d.comb += dbus.cyc.eq(cpu.dbus.cyc)
m.d.comb += dbus.stb.eq(cpu.dbus.stb)
m.d.comb += cpu.dbus.ack.eq(dbus.ack)
m.d.comb += dbus.we.eq(cpu.dbus.we)
m.d.comb += dbus.cti.eq(cpu.dbus.cti)
m.d.comb += dbus.bte.eq(cpu.dbus.bte)
m.d.comb += cpu.dbus.err.eq(dbus.err)
# Disable all interrupts
m.d.comb += cpu.external_interrupt.eq(0)
m.d.comb += cpu.timer_interrupt.eq(0)
m.d.comb += cpu.software_interrupt.eq(0)
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m.d.comb += reg_spec.reset.eq(0)
m.d.comb += reg_spec.check.eq(1)
m.d.comb += reg_spec.rvfi_valid.eq(cpu.rvfi.valid)
m.d.comb += reg_spec.rvfi_order.eq(cpu.rvfi.order)
m.d.comb += reg_spec.rvfi_rs1_addr.eq(cpu.rvfi.rs1_addr)
m.d.comb += reg_spec.rvfi_rs1_rdata.eq(cpu.rvfi.rs1_rdata)
m.d.comb += reg_spec.rvfi_rs2_addr.eq(cpu.rvfi.rs2_addr)
m.d.comb += reg_spec.rvfi_rs2_rdata.eq(cpu.rvfi.rs2_rdata)
m.d.comb += reg_spec.rvfi_rd_addr.eq(cpu.rvfi.rd_addr)
m.d.comb += reg_spec.rvfi_rd_wdata.eq(cpu.rvfi.rd_wdata)
return m
class RegTestCase(FHDLTestCase):
def verify(self):
self.assertFormal(RegSpec(), mode="bmc", depth=40, engine="smtbmc --nopresat")
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class CausalSpec(Elaboratable):
def elaborate(self, platform):
m = Module()
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
m.submodules.causal_spec = causal_spec = CausalCheck()
# Connect Wishbone instruction bus to Minerva CPU
m.submodules.ibus = ibus = MemoryBus()
m.d.comb += ibus.adr.eq(cpu.ibus.adr)
m.d.comb += ibus.dat_w.eq(cpu.ibus.dat_w)
m.d.comb += cpu.ibus.dat_r.eq(ibus.dat_r)
m.d.comb += ibus.sel.eq(cpu.ibus.sel)
m.d.comb += ibus.cyc.eq(cpu.ibus.cyc)
m.d.comb += ibus.stb.eq(cpu.ibus.stb)
m.d.comb += cpu.ibus.ack.eq(ibus.ack)
m.d.comb += ibus.we.eq(cpu.ibus.we)
m.d.comb += ibus.cti.eq(cpu.ibus.cti)
m.d.comb += ibus.bte.eq(cpu.ibus.bte)
m.d.comb += cpu.ibus.err.eq(ibus.err)
# Connect Wishbone data bus to Minerva CPU
m.submodules.dbus = dbus = MemoryBus()
m.d.comb += dbus.adr.eq(cpu.dbus.adr)
m.d.comb += dbus.dat_w.eq(cpu.dbus.dat_w)
m.d.comb += cpu.dbus.dat_r.eq(dbus.dat_r)
m.d.comb += dbus.sel.eq(cpu.dbus.sel)
m.d.comb += dbus.cyc.eq(cpu.dbus.cyc)
m.d.comb += dbus.stb.eq(cpu.dbus.stb)
m.d.comb += cpu.dbus.ack.eq(dbus.ack)
m.d.comb += dbus.we.eq(cpu.dbus.we)
m.d.comb += dbus.cti.eq(cpu.dbus.cti)
m.d.comb += dbus.bte.eq(cpu.dbus.bte)
m.d.comb += cpu.dbus.err.eq(dbus.err)
# Disable all interrupts
m.d.comb += cpu.external_interrupt.eq(0)
m.d.comb += cpu.timer_interrupt.eq(0)
m.d.comb += cpu.software_interrupt.eq(0)
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m.d.comb += causal_spec.reset.eq(0)
m.d.comb += causal_spec.check.eq(1)
m.d.comb += causal_spec.rvfi_valid.eq(cpu.rvfi.valid)
m.d.comb += causal_spec.rvfi_rd_addr.eq(cpu.rvfi.rd_addr)
m.d.comb += causal_spec.rvfi_order.eq(cpu.rvfi.order)
m.d.comb += causal_spec.rvfi_rs1_addr.eq(cpu.rvfi.rs1_addr)
m.d.comb += causal_spec.rvfi_rs2_addr.eq(cpu.rvfi.rs2_addr)
return m
class CausalTestCase(FHDLTestCase):
def verify(self):
self.assertFormal(CausalSpec(), mode="bmc", depth=40, engine="smtbmc --nopresat")
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class LivenessSpec(Elaboratable):
def elaborate(self, platform):
m = Module()
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
m.submodules.liveness_spec = liveness_spec = LivenessCheck()
# Connect Wishbone instruction bus to Minerva CPU
m.submodules.ibus = ibus = MemoryBus()
m.d.comb += ibus.adr.eq(cpu.ibus.adr)
m.d.comb += ibus.dat_w.eq(cpu.ibus.dat_w)
m.d.comb += cpu.ibus.dat_r.eq(ibus.dat_r)
m.d.comb += ibus.sel.eq(cpu.ibus.sel)
m.d.comb += ibus.cyc.eq(cpu.ibus.cyc)
m.d.comb += ibus.stb.eq(cpu.ibus.stb)
m.d.comb += cpu.ibus.ack.eq(ibus.ack)
m.d.comb += ibus.we.eq(cpu.ibus.we)
m.d.comb += ibus.cti.eq(cpu.ibus.cti)
m.d.comb += ibus.bte.eq(cpu.ibus.bte)
m.d.comb += cpu.ibus.err.eq(ibus.err)
# Connect Wishbone data bus to Minerva CPU
m.submodules.dbus = dbus = MemoryBus()
m.d.comb += dbus.adr.eq(cpu.dbus.adr)
m.d.comb += dbus.dat_w.eq(cpu.dbus.dat_w)
m.d.comb += cpu.dbus.dat_r.eq(dbus.dat_r)
m.d.comb += dbus.sel.eq(cpu.dbus.sel)
m.d.comb += dbus.cyc.eq(cpu.dbus.cyc)
m.d.comb += dbus.stb.eq(cpu.dbus.stb)
m.d.comb += cpu.dbus.ack.eq(dbus.ack)
m.d.comb += dbus.we.eq(cpu.dbus.we)
m.d.comb += dbus.cti.eq(cpu.dbus.cti)
m.d.comb += dbus.bte.eq(cpu.dbus.bte)
m.d.comb += cpu.dbus.err.eq(dbus.err)
# Disable all interrupts
m.d.comb += cpu.external_interrupt.eq(0)
m.d.comb += cpu.timer_interrupt.eq(0)
m.d.comb += cpu.software_interrupt.eq(0)
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m.d.comb += liveness_spec.reset.eq(0)
m.d.comb += liveness_spec.rvfi_valid.eq(cpu.rvfi.valid)
m.d.comb += liveness_spec.rvfi_order.eq(cpu.rvfi.order)
m.d.comb += liveness_spec.trig.eq(1)
m.d.comb += liveness_spec.rvfi_halt.eq(cpu.rvfi.halt)
m.d.comb += liveness_spec.check.eq(1)
return m
class LivenessTestCase(FHDLTestCase):
def verify(self):
self.assertFormal(LivenessSpec(), mode="bmc", depth=40, engine="smtbmc --nopresat")
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class UniqueSpec(Elaboratable):
def elaborate(self, platform):
m = Module()
m.submodules.cpu = cpu = Minerva(with_rvfi=True)
m.submodules.unique_spec = unique_spec = UniqueCheck()
# Connect Wishbone instruction bus to Minerva CPU
m.submodules.ibus = ibus = MemoryBus()
m.d.comb += ibus.adr.eq(cpu.ibus.adr)
m.d.comb += ibus.dat_w.eq(cpu.ibus.dat_w)
m.d.comb += cpu.ibus.dat_r.eq(ibus.dat_r)
m.d.comb += ibus.sel.eq(cpu.ibus.sel)
m.d.comb += ibus.cyc.eq(cpu.ibus.cyc)
m.d.comb += ibus.stb.eq(cpu.ibus.stb)
m.d.comb += cpu.ibus.ack.eq(ibus.ack)
m.d.comb += ibus.we.eq(cpu.ibus.we)
m.d.comb += ibus.cti.eq(cpu.ibus.cti)
m.d.comb += ibus.bte.eq(cpu.ibus.bte)
m.d.comb += cpu.ibus.err.eq(ibus.err)
# Connect Wishbone data bus to Minerva CPU
m.submodules.dbus = dbus = MemoryBus()
m.d.comb += dbus.adr.eq(cpu.dbus.adr)
m.d.comb += dbus.dat_w.eq(cpu.dbus.dat_w)
m.d.comb += cpu.dbus.dat_r.eq(dbus.dat_r)
m.d.comb += dbus.sel.eq(cpu.dbus.sel)
m.d.comb += dbus.cyc.eq(cpu.dbus.cyc)
m.d.comb += dbus.stb.eq(cpu.dbus.stb)
m.d.comb += cpu.dbus.ack.eq(dbus.ack)
m.d.comb += dbus.we.eq(cpu.dbus.we)
m.d.comb += dbus.cti.eq(cpu.dbus.cti)
m.d.comb += dbus.bte.eq(cpu.dbus.bte)
m.d.comb += cpu.dbus.err.eq(dbus.err)
# Disable all interrupts
m.d.comb += cpu.external_interrupt.eq(0)
m.d.comb += cpu.timer_interrupt.eq(0)
m.d.comb += cpu.software_interrupt.eq(0)
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m.d.comb += unique_spec.reset.eq(0)
m.d.comb += unique_spec.rvfi_valid.eq(cpu.rvfi.valid)
m.d.comb += unique_spec.rvfi_order.eq(cpu.rvfi.order)
m.d.comb += unique_spec.trig.eq(1)
m.d.comb += unique_spec.check.eq(1)
return m
class UniqueTestCase(FHDLTestCase):
def verify(self):
self.assertFormal(UniqueSpec(), mode="bmc", depth=40, engine="smtbmc --nopresat")
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print('*' * 80)
print('*' + ' ' * 78 + '*')
print('* Verifying the Minerva core ... *')
print('*' + ' ' * 78 + '*')
print('*' * 80)
print("Verifying RV32I instructions ...")
InsnTestCase().verify()
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print("Verifying PC forward checks ...")
PcFwdTestCase().verify()
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print("Verifying PC backward checks ...")
PcBwdTestCase().verify()
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print("Verifying register checks ...")
RegTestCase().verify()
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print("Verifying causal checks ...")
CausalTestCase().verify()
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print("Verifying liveness checks ...")
LivenessTestCase().verify()
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print("Verifying uniqueness checks ...")
UniqueTestCase().verify()
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print('*' * 80)
print('*' + ' ' * 78 + '*')
print('* All verification tasks successful! *')
print('*' + ' ' * 78 + '*')
print('*' * 80)