mirror of https://github.com/efabless/caravel.git
86 lines
4.6 KiB
Python
86 lines
4.6 KiB
Python
import random
|
|
import cocotb
|
|
from cocotb.triggers import FallingEdge,RisingEdge,ClockCycles
|
|
import cocotb.log
|
|
from interfaces.cpu import RiskV
|
|
from interfaces.defsParser import Regs
|
|
from cocotb.result import TestSuccess
|
|
from tests.common_functions.test_functions import *
|
|
from tests.bitbang.bitbang_functions import *
|
|
from interfaces.caravel import GPIO_MODE
|
|
from cocotb.binary import BinaryValue
|
|
|
|
reg = Regs()
|
|
caravel_clock = 0
|
|
user_clock = 0
|
|
@cocotb.test()
|
|
@repot_test
|
|
async def pll(dut):
|
|
caravelEnv,clock = await test_configure(dut,timeout_cycles=47279)
|
|
cpu = RiskV(dut)
|
|
cpu.cpu_force_reset()
|
|
cpu.cpu_release_reset()
|
|
error_margin = 0.1
|
|
|
|
await wait_reg1(cpu,caravelEnv,0xA1)
|
|
|
|
await cocotb.start(calculate_clk_period(dut.bin14_monitor,"caravel clock"))
|
|
await cocotb.start(calculate_clk_period(dut.bin15_monitor,"user clock"))
|
|
await wait_reg1(cpu,caravelEnv,0xA3)
|
|
if abs(caravel_clock - user_clock) > error_margin*caravel_clock:
|
|
cocotb.log.error(f"[TEST] Error: clocks should be equal in phase 1 but caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
else:
|
|
cocotb.log.info(f"[TEST] pass phase 1 caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
await cocotb.start(calculate_clk_period(dut.bin14_monitor,"caravel clock"))
|
|
await cocotb.start(calculate_clk_period(dut.bin15_monitor,"user clock"))
|
|
await wait_reg1(cpu,caravelEnv,0xA5)
|
|
if abs(caravel_clock - user_clock) > error_margin*caravel_clock:
|
|
cocotb.log.error(f"[TEST] Error: clocks should be equal in phase 2 but caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
else:
|
|
cocotb.log.info(f"[TEST] pass phase 2 caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
await cocotb.start(calculate_clk_period(dut.bin14_monitor,"caravel clock"))
|
|
await cocotb.start(calculate_clk_period(dut.bin15_monitor,"user clock"))
|
|
await wait_reg1(cpu,caravelEnv,0xA7)
|
|
if abs(caravel_clock - user_clock*3) > error_margin*caravel_clock:
|
|
cocotb.log.error(f"[TEST] Error: user clock shoud be 3 times caravel clock in phase 3 but caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
else:
|
|
cocotb.log.info(f"[TEST] pass phase 3 caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
await cocotb.start(calculate_clk_period(dut.bin14_monitor,"caravel clock"))
|
|
await cocotb.start(calculate_clk_period(dut.bin15_monitor,"user clock "))
|
|
await wait_reg1(cpu,caravelEnv,0xA9)
|
|
if abs(caravel_clock - user_clock*3) > error_margin*caravel_clock:
|
|
cocotb.log.error(f"[TEST] Error: user clock shoud be 3 times caravel clock in phase 4 but caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
else:
|
|
cocotb.log.info(f"[TEST] pass phase 4 caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
await cocotb.start(calculate_clk_period(dut.bin14_monitor,"caravel clock"))
|
|
await cocotb.start(calculate_clk_period(dut.bin15_monitor,"user clock"))
|
|
await wait_reg1(cpu,caravelEnv,0xAa)
|
|
if abs(caravel_clock - user_clock*4) > error_margin*caravel_clock:
|
|
cocotb.log.error(f"[TEST] Error: user clock shoud be 4 times caravel clock in phase 5 but caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
else:
|
|
cocotb.log.info(f"[TEST] pass phase 5 caravel clock = {round(1000000/caravel_clock,2)} MHz user clock = {round(1000000/user_clock,2)} MHz")
|
|
await ClockCycles(caravelEnv.clk,10000)
|
|
|
|
# for i in range(1000):
|
|
# await ClockCycles(caravelEnv.clk,10000)
|
|
# cocotb.log.info(f"time = {cocotb.simulator.get_sim_time()}")
|
|
|
|
async def calculate_clk_period(clk,name):
|
|
await RisingEdge(clk)
|
|
initial_time = cocotb.simulator.get_sim_time()
|
|
initial_time = (initial_time[0] <<32) | (initial_time[1])
|
|
for i in range(100):
|
|
await RisingEdge(clk)
|
|
end_time = cocotb.simulator.get_sim_time()
|
|
end_time = (end_time[0] <<32) | (end_time[1])
|
|
val = (end_time - initial_time) / 100
|
|
cocotb.log.debug(f"[TEST] clock of {name} is {val}")
|
|
if name == "caravel clock":
|
|
global caravel_clock
|
|
caravel_clock = val
|
|
elif name == "user clock":
|
|
global user_clock
|
|
user_clock = val
|
|
|
|
val = str(val)
|
|
return val |