{"block":{"name":"uart","variant":null,"commit":"9b639d2bc3321697d040cde7b4aea812807d96ab","commit_short":"9b639d2","branch":"master","url":"https://github.com/lowRISC/opentitan/tree/9b639d2bc3321697d040cde7b4aea812807d96ab","revision_info":"GitHub Revision: [`9b639d2`](https://github.com/lowrisc/opentitan/tree/9b639d2bc3321697d040cde7b4aea812807d96ab)"},"tool":{"name":"vcs","version":"unknown"},"timestamp":"2026-06-25T15:30:31Z","build_seed":null,"testplan_ref":"https://opentitan.org/book/hw/ip/uart/data/uart_testplan.html","stages":{"V1":{"testpoints":{"smoke":{"tests":{"uart_smoke":{"max_time":9.73,"sim_time":5955.4055499999995,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"csr_hw_reset":{"tests":{"uart_csr_hw_reset":{"max_time":0.66,"sim_time":17.524273,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"csr_rw":{"tests":{"uart_csr_rw":{"max_time":0.57,"sim_time":57.428423,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"csr_bit_bash":{"tests":{"uart_csr_bit_bash":{"max_time":1.47,"sim_time":47.109714,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"csr_aliasing":{"tests":{"uart_csr_aliasing":{"max_time":0.71,"sim_time":54.398557000000004,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"csr_mem_rw_with_rand_reset":{"tests":{"uart_csr_mem_rw_with_rand_reset":{"max_time":0.73,"sim_time":132.870443,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"regwen_csr_and_corresponding_lockable_csr":{"tests":{"uart_csr_rw":{"max_time":0.57,"sim_time":57.428423,"passed":1,"total":1,"percent":100.0},"uart_csr_aliasing":{"max_time":0.71,"sim_time":54.398557000000004,"passed":1,"total":1,"percent":100.0}},"passed":2,"total":2,"percent":100.0}},"passed":6,"total":6,"percent":100.0},"V2":{"testpoints":{"base_random_seq":{"tests":{"uart_tx_rx":{"max_time":26.42,"sim_time":68781.893612,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"parity":{"tests":{"uart_smoke":{"max_time":9.73,"sim_time":5955.4055499999995,"passed":1,"total":1,"percent":100.0},"uart_tx_rx":{"max_time":26.42,"sim_time":68781.893612,"passed":1,"total":1,"percent":100.0}},"passed":2,"total":2,"percent":100.0},"parity_error":{"tests":{"uart_intr":{"max_time":430.22,"sim_time":492668.047885,"passed":1,"total":1,"percent":100.0},"uart_rx_parity_err":{"max_time":25.96,"sim_time":109266.1491,"passed":1,"total":1,"percent":100.0}},"passed":2,"total":2,"percent":100.0},"watermark":{"tests":{"uart_tx_rx":{"max_time":26.42,"sim_time":68781.893612,"passed":1,"total":1,"percent":100.0},"uart_intr":{"max_time":430.22,"sim_time":492668.047885,"passed":1,"total":1,"percent":100.0}},"passed":2,"total":2,"percent":100.0},"fifo_full":{"tests":{"uart_fifo_full":{"max_time":234.28,"sim_time":144218.853803,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"fifo_overflow":{"tests":{"uart_fifo_overflow":{"max_time":48.05,"sim_time":190142.916883,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"fifo_reset":{"tests":{"uart_fifo_reset":{"max_time":64.4,"sim_time":73055.56463600001,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_frame_err":{"tests":{"uart_intr":{"max_time":430.22,"sim_time":492668.047885,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_break_err":{"tests":{"uart_intr":{"max_time":430.22,"sim_time":492668.047885,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_timeout":{"tests":{"uart_intr":{"max_time":430.22,"sim_time":492668.047885,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"perf":{"tests":{"uart_perf":{"max_time":142.4,"sim_time":20053.624952,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"sys_loopback":{"tests":{"uart_loopback":{"max_time":1.72,"sim_time":2596.30476,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"line_loopback":{"tests":{"uart_loopback":{"max_time":1.72,"sim_time":2596.30476,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_noise_filter":{"tests":{"uart_noise_filter":{"max_time":1.88,"sim_time":13756.5033,"passed":0,"total":1,"percent":0.0}},"passed":0,"total":1,"percent":0.0},"rx_start_bit_filter":{"tests":{"uart_rx_start_bit_filter":{"max_time":1.61,"sim_time":5098.370371,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"tx_overide":{"tests":{"uart_tx_ovrd":{"max_time":17.86,"sim_time":7166.971514000001,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_oversample":{"tests":{"uart_rx_oversample":{"max_time":33.85,"sim_time":7594.381453,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"long_b2b_transfer":{"tests":{"uart_long_xfer_wo_dly":{"max_time":110.49,"sim_time":168792.494495,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"stress_all":{"tests":{"uart_stress_all":{"max_time":243.73999999999998,"sim_time":243080.46753999998,"passed":0,"total":1,"percent":0.0}},"passed":0,"total":1,"percent":0.0},"alert_test":{"tests":{"uart_alert_test":{"max_time":0.64,"sim_time":36.33062,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"intr_test":{"tests":{"uart_intr_test":{"max_time":0.6,"sim_time":13.615368,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"tl_d_oob_addr_access":{"tests":{"uart_tl_errors":{"max_time":1.56,"sim_time":210.067095,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"tl_d_illegal_access":{"tests":{"uart_tl_errors":{"max_time":1.56,"sim_time":210.067095,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"tl_d_outstanding_access":{"tests":{"uart_csr_hw_reset":{"max_time":0.66,"sim_time":17.524273,"passed":1,"total":1,"percent":100.0},"uart_csr_rw":{"max_time":0.57,"sim_time":57.428423,"passed":1,"total":1,"percent":100.0},"uart_csr_aliasing":{"max_time":0.71,"sim_time":54.398557000000004,"passed":1,"total":1,"percent":100.0},"uart_same_csr_outstanding":{"max_time":0.87,"sim_time":116.064803,"passed":1,"total":1,"percent":100.0}},"passed":4,"total":4,"percent":100.0},"tl_d_partial_access":{"tests":{"uart_csr_hw_reset":{"max_time":0.66,"sim_time":17.524273,"passed":1,"total":1,"percent":100.0},"uart_csr_rw":{"max_time":0.57,"sim_time":57.428423,"passed":1,"total":1,"percent":100.0},"uart_csr_aliasing":{"max_time":0.71,"sim_time":54.398557000000004,"passed":1,"total":1,"percent":100.0},"uart_same_csr_outstanding":{"max_time":0.87,"sim_time":116.064803,"passed":1,"total":1,"percent":100.0}},"passed":4,"total":4,"percent":100.0}},"passed":20,"total":22,"percent":90.9090909090909},"V2S":{"testpoints":{"tl_intg_err":{"tests":{"uart_sec_cm":{"max_time":0.73,"sim_time":110.94089100000001,"passed":1,"total":1,"percent":100.0},"uart_tl_intg_err":{"max_time":0.79,"sim_time":479.54747499999996,"passed":1,"total":1,"percent":100.0}},"passed":2,"total":2,"percent":100.0},"sec_cm_bus_integrity":{"tests":{"uart_tl_intg_err":{"max_time":0.79,"sim_time":479.54747499999996,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0}},"passed":2,"total":2,"percent":100.0},"V3":{"testpoints":{"stress_all_with_rand_reset":{"tests":{"uart_stress_all_with_rand_reset":{"max_time":27.19,"sim_time":6782.659818,"passed":0,"total":1,"percent":0.0}},"passed":0,"total":1,"percent":0.0}},"passed":0,"total":1,"percent":0.0}},"coverage":{"code":{"block":null,"line_statement":98.86,"branch":96.5,"condition_expression":93.82,"toggle":73.93,"fsm":null},"assertion":98.85,"functional":49.63},"cov_report_page":"/nightly/current_run/scratch/master/uart-sim-vcs/cov_report/dashboard.html","vplan_report_page":null,"vplan_coverage":null,"failed_jobs":{"buckets":{"UVM_ERROR (uart_scoreboard.sv:377) [scoreboard] Check failed get_field_val(ral.status.rxempty, item.d_data) == rx_empty_exp (* [*] vs * [*]) check rx_empty fail: uart_rx_clk_pulses = *, rx_q.size = *":[{"name":"uart_noise_filter","qual_name":"0.uart_noise_filter.59423476994958881256907365999054182143006634907836384346489098565609899192305","seed":59423476994958881256907365999054182143006634907836384346489098565609899192305,"line":75,"log_path":"/nightly/current_run/scratch/master/uart-sim-vcs/0.uart_noise_filter/latest/run.log","log_context":["UVM_ERROR @ 10144378300 ps: (uart_scoreboard.sv:393) [uvm_test_top.env.scoreboard] Check failed get_field_val(ral.status.rxidle, item.d_data) == rx_idle_exp (0 [0x0] vs 1 [0x1]) check rx_idle fail: rx_en = 1, uart_rx_clk_pulses = 0\n","UVM_ERROR @ 10152878300 ps: (uart_scoreboard.sv:501) uvm_test_top.env.scoreboard [uvm_test_top.env.scoreboard] rxlvl mismatch exp: 0 (+/-1), act: 10,                                 clk_pulses: 0\n","UVM_ERROR @ 10153128300 ps: (uart_scoreboard.sv:462) uvm_test_top.env.scoreboard [uvm_test_top.env.scoreboard] unexpected read when fifo is empty\n","UVM_ERROR @ 10154128300 ps: (uart_scoreboard.sv:531) [uvm_test_top.env.scoreboard] Check failed csr.get_mirrored_value() == item.d_data (0 [0x0] vs 255 [0xff]) reg name: uart_reg_block.rdata\n"]}],"UVM_ERROR (uart_scoreboard.sv:501) scoreboard [scoreboard] rxlvl mismatch exp: * (+/-1), act: *, clk_pulses: *":[{"name":"uart_stress_all_with_rand_reset","qual_name":"0.uart_stress_all_with_rand_reset.81952954699233686590778455883379416775474981913762977493834869038242683184715","seed":81952954699233686590778455883379416775474981913762977493834869038242683184715,"line":178,"log_path":"/nightly/current_run/scratch/master/uart-sim-vcs/0.uart_stress_all_with_rand_reset/latest/run.log","log_context":["UVM_ERROR @ 5563034818 ps: (uart_scoreboard.sv:462) uvm_test_top.env.scoreboard [uvm_test_top.env.scoreboard] unexpected read when fifo is empty\n","UVM_ERROR @ 5563059818 ps: (uart_scoreboard.sv:531) [uvm_test_top.env.scoreboard] Check failed csr.get_mirrored_value() == item.d_data (0 [0x0] vs 255 [0xff]) reg name: uart_reg_block.rdata\n","UVM_ERROR @ 5686234818 ps: (uart_scoreboard.sv:377) [uvm_test_top.env.scoreboard] Check failed get_field_val(ral.status.rxempty, item.d_data) == rx_empty_exp (0 [0x0] vs 1 [0x1]) check rx_empty fail: uart_rx_clk_pulses = 0, rx_q.size = 0\n","UVM_ERROR @ 5686234818 ps: (uart_scoreboard.sv:393) [uvm_test_top.env.scoreboard] Check failed get_field_val(ral.status.rxidle, item.d_data) == rx_idle_exp (0 [0x0] vs 1 [0x1]) check rx_idle fail: rx_en = 1, uart_rx_clk_pulses = 0\n"]},{"name":"uart_stress_all","qual_name":"0.uart_stress_all.36433087212551781432956468379379612940899812198401581892322926925135340065207","seed":36433087212551781432956468379379612940899812198401581892322926925135340065207,"line":134,"log_path":"/nightly/current_run/scratch/master/uart-sim-vcs/0.uart_stress_all/latest/run.log","log_context":["UVM_ERROR @ 242590124524 ps: (uart_scoreboard.sv:462) uvm_test_top.env.scoreboard [uvm_test_top.env.scoreboard] unexpected read when fifo is empty\n","UVM_ERROR @ 242590175544 ps: (uart_scoreboard.sv:531) [uvm_test_top.env.scoreboard] Check failed csr.get_mirrored_value() == item.d_data (169 [0xa9] vs 247 [0xf7]) reg name: uart_reg_block.rdata\n","UVM_ERROR @ 242590195952 ps: (uart_scoreboard.sv:462) uvm_test_top.env.scoreboard [uvm_test_top.env.scoreboard] unexpected read when fifo is empty\n","UVM_ERROR @ 242590236768 ps: (uart_scoreboard.sv:531) [uvm_test_top.env.scoreboard] Check failed csr.get_mirrored_value() == item.d_data (169 [0xa9] vs 255 [0xff]) reg name: uart_reg_block.rdata\n"]}]}},"passed":24,"total":27,"percent":88.88888888888889}