OpenRAM/compiler/tests/22_sram_func_test.py

#!/usr/bin/env python2.7
"""
Run a regresion test on various srams
"""

import unittest
from testutils import header,openram_test
import sys,os
sys.path.append(os.path.join(sys.path[0],".."))
import globals
from globals import OPTS
import debug

class sram_func_test(openram_test):

    def runTest(self):
        globals.init_openram("config_20_{0}".format(OPTS.tech_name))
        OPTS.check_lvsdrc = False
        OPTS.spice_name="" # Unset to use any simulator
        OPTS.analytical_delay = False

        # This is a hack to reload the characterizer __init__ with the spice version
        import characterizer
        reload(characterizer)
        from characterizer import delay
        if not OPTS.spice_exe:
            debug.error("Could not find {} simulator.".format(OPTS.spice_name),-1)

        import sram

        debug.info(1, "Testing timing for sample 1bit, 16words SRAM with 1 bank")
        s = sram.sram(word_size=1,
                      num_words=16,
                      num_banks=1,
                      name="sram_func_test")

        OPTS.check_lvsdrc = True

        tempspice = OPTS.openram_temp + "temp.sp"
        s.sp_write(tempspice)

        probe_address = "1" * s.addr_size
        probe_data = s.word_size - 1
        debug.info(1, "Probe address {0} probe data {1}".format(probe_address, probe_data))

        corner = (OPTS.process_corners[0], OPTS.supply_voltages[0], OPTS.temperatures[0])
        d = delay.delay(s,tempspice,corner)
        d.set_probe(probe_address,probe_data)

        # This will exit if it doesn't find a feasible period
        import tech
        d.load = tech.spice["msflop_in_cap"]*4
        d.slew = tech.spice["rise_time"]*2
        feasible_period = d.find_feasible_period()

        os.remove(tempspice)
        OPTS.analytical_delay = True
        reload(characterizer)
        globals.end_openram()
        
# instantiate a copdsay of the class to actually run the test
if __name__ == "__main__":
    (OPTS, args) = globals.parse_args()
    del sys.argv[1:]
    header(__file__, OPTS.tech_name)
    unittest.main()