litex/sim/tb_trigger_csr.py

103 lines
2.5 KiB
Python

from migen.fhdl.std import *
from migen.fhdl import verilog
from migen.bus import csr
from migen.sim.generic import run_simulation
from migen.bus.transactions import *
from miscope.std import *
from miscope.trigger import *
from mibuild.tools import write_to_file
from miscope.tools.regs import *
from miscope.tools.truthtable import *
from cpuif import *
class Csr2Trans():
def __init__(self):
self.t = []
def write_csr(self, adr, value):
self.t.append(TWrite(adr//4, value))
def read_csr(self, adr):
self.t.append(TRead(adr//4))
def csr_prog_mila(bus, regs):
regs.trigger_port0_mask.write(0xFFFFFFFF)
regs.trigger_port0_trig.write(0xDEADBEEF)
regs.trigger_port1_mask.write(0xFFFFFFFF)
regs.trigger_port1_trig.write(0xCAFEFADE)
regs.trigger_port2_mask.write(0xFFFFFFFF)
regs.trigger_port2_trig.write(0xDEADBEEF)
regs.trigger_port3_mask.write(0xFFFFFFFF)
regs.trigger_port3_trig.write(0xCAFEFADE)
sum_tt = gen_truth_table("i1 & i2 & i3 & i4")
sum_trans = []
for i in range(len(sum_tt)):
regs.trigger_sum_prog_adr.write(i)
regs.trigger_sum_prog_dat.write(sum_tt[i])
regs.trigger_sum_prog_we.write(1)
return bus.t
csr_done = False
def csr_transactions(bus, regs):
for t in csr_prog_mila(bus, regs):
yield t
global csr_done
csr_done = True
for t in range(100):
yield None
class TB(Module):
csr_base = 0
csr_map = {
"trigger": 1,
}
def __init__(self, addrmap=None):
self.csr_base = 0
# Trigger
term0 = Term(32)
term1 = Term(32)
term2 = Term(32)
term3 = Term(32)
self.submodules.trigger = Trigger(32, [term0, term1, term2, term3])
# Csr
self.submodules.csrbankarray = csrgen.BankArray(self,
lambda name, memory: self.csr_map[name if memory is None else name + "_" + memory.name_override])
# Csr Master
csr_header = get_csr_csv(self.csr_base, self.csrbankarray)
write_to_file("csr.csv", csr_header)
bus = Csr2Trans()
regs = build_map(addrmap, bus.read_csr, bus.write_csr)
self.submodules.master = csr.Initiator(csr_transactions(bus, regs))
self.submodules.csrcon = csr.Interconnect(self.master.bus, self.csrbankarray.get_buses())
self.terms = [term0, term1, term2, term3]
def do_simulation(self, selfp):
for term in selfp.terms:
term.sink.stb = 1
if csr_done:
selfp.terms[0].sink.dat = 0xDEADBEEF
selfp.terms[1].sink.dat = 0xCAFEFADE
selfp.terms[2].sink.dat = 0xDEADBEEF
selfp.terms[3].sink.dat = 0xCAFEFADE
def main():
tb = TB(addrmap="csr.csv")
run_simulation(tb, ncycles=2000, vcd_name="tb_trigger_csr.vcd")
print("Sim Done")
input()
main()