| ''' |
| Created on Nov 23, 2019 |
| |
| @author: ballance |
| ''' |
| import cocotb |
| from cocotb.bfms import BfmMgr |
| from fwrisc_rv32i_tests.instr_tests import InstrTests |
| from fwrisc_tracer_bfm.fwrisc_tracer_signal_bfm import FwriscTracerSignalBfm |
| |
| from elftools.elf.elffile import ELFFile |
| from elftools.elf.sections import SymbolTableSection |
| from sys import stdout |
| |
| |
| class ZephyrTests(InstrTests): |
| |
| def __init__(self, tracer_bfm): |
| super().__init__(tracer_bfm) |
| |
| self.max_instr = 0 |
| self.halt_addr = -1 |
| |
| tracer_bfm.add_listener(self) |
| |
| sw_image = cocotb.plusargs["SW_IMAGE"] |
| |
| self.raw_console = False |
| self.console_buffer = "" |
| self.console_output = [] |
| with open(sw_image, "rb") as f: |
| elffile = ELFFile(f) |
| |
| symtab = elffile.get_section_by_name(".symtab") |
| |
| self.ram_console_addr = symtab.get_symbol_by_name("ram_console")[0]["st_value"] |
| tracer_bfm.add_addr_region(self.ram_console_addr, self.ram_console_addr+1023) |
| |
| def configure_tracer(self): |
| self.tracer_bfm.set_trace_reg_writes(0) |
| self.tracer_bfm.set_trace_instr(0, 0, 0) |
| self.tracer_bfm.set_trace_all_memwrite(0) |
| |
| self.tracer_bfm.add_addr_region( |
| self.ram_console_addr, |
| self.ram_console_addr+1023) |
| |
| def instr_exec(self, pc, instr): |
| # print("instr_exec: 0x%08x" % (pc)) |
| pass |
| |
| def mem_write(self, maddr, mstrb, mdata): |
| # print("mem_write: 0x%08x 0x%08x" % (maddr, mdata)) |
| if maddr >= self.ram_console_addr and maddr < self.ram_console_addr+1024 and mdata != 0: |
| ch = 0 |
| if mstrb == 1: |
| ch = ((mdata >> 0) & 0xFF) |
| elif mstrb == 2: |
| ch = ((mdata >> 8) & 0xFF) |
| elif mstrb == 4: |
| ch = ((mdata >> 16) & 0xFF) |
| elif mstrb == 8: |
| ch = ((mdata >> 24) & 0xFF) |
| |
| ch = str(chr(ch)) |
| if ch == '\n': |
| self.console_line(self.console_buffer) |
| if not self.raw_console: |
| print(self.console_buffer) |
| stdout.flush() |
| self.console_buffer = "" |
| else: |
| self.console_buffer += ch |
| |
| if self.raw_console: |
| stdout.write(ch) |
| stdout.flush() |
| |
| def console_line(self, line): |
| self.console_output.append(line) |
| |
| |
| @cocotb.coroutine |
| def run(self): |
| # Configure the tracer BFM |
| self.configure_tracer() |
| |
| yield self.test_done_ev.wait() |
| pass |
| |
| @cocotb.coroutine |
| def check(self): |
| print("Check") |
| pass |
| |
| |
| @cocotb.test() |
| def runtest(dut): |
| use_tf_bfm = True |
| |
| if use_tf_bfm: |
| tracer_bfm = BfmMgr.find_bfm(".*u_tracer") |
| else: |
| tracer_bfm = FwriscTracerSignalBfm(dut.u_dut.u_core.u_tracer) |
| test = ZephyrTests(tracer_bfm) |
| |
| |
| yield test.run() |
| |
