{"block":{"name":"uart","variant":null,"commit":"b84939858661954297167feba7d92dbe9ef43652","commit_short":"b849398","branch":"master","url":"https://github.com/lowRISC/opentitan/tree/b84939858661954297167feba7d92dbe9ef43652","revision_info":"GitHub Revision: [`b849398`](https://github.com/lowrisc/opentitan/tree/b84939858661954297167feba7d92dbe9ef43652)"},"tool":{"name":"vcs","version":"unknown"},"timestamp":"2026-04-16T00:05:37Z","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":1.43,"sim_time":611.452279,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"csr_hw_reset":{"tests":{"uart_csr_hw_reset":{"max_time":0.81,"sim_time":14.365581,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"csr_rw":{"tests":{"uart_csr_rw":{"max_time":0.85,"sim_time":96.88008900000001,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"csr_bit_bash":{"tests":{"uart_csr_bit_bash":{"max_time":1.93,"sim_time":702.334552,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"csr_aliasing":{"tests":{"uart_csr_aliasing":{"max_time":0.99,"sim_time":64.14907699999999,"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":0.81,"sim_time":296.698741,"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":0.85,"sim_time":96.88008900000001,"passed":1,"total":1,"percent":100.0},"uart_csr_aliasing":{"max_time":0.99,"sim_time":64.14907699999999,"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":26.31,"sim_time":62459.107662,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"parity":{"tests":{"uart_smoke":{"max_time":1.43,"sim_time":611.452279,"passed":1,"total":1,"percent":100.0},"uart_tx_rx":{"max_time":26.31,"sim_time":62459.107662,"passed":1,"total":1,"percent":100.0}},"passed":2,"total":2,"percent":100.0},"parity_error":{"tests":{"uart_intr":{"max_time":16.87,"sim_time":18907.43057,"passed":1,"total":1,"percent":100.0},"uart_rx_parity_err":{"max_time":112.86,"sim_time":124590.556652,"passed":1,"total":1,"percent":100.0}},"passed":2,"total":2,"percent":100.0},"watermark":{"tests":{"uart_tx_rx":{"max_time":26.31,"sim_time":62459.107662,"passed":1,"total":1,"percent":100.0},"uart_intr":{"max_time":16.87,"sim_time":18907.43057,"passed":1,"total":1,"percent":100.0}},"passed":2,"total":2,"percent":100.0},"fifo_full":{"tests":{"uart_fifo_full":{"max_time":60.93000000000001,"sim_time":54666.02437,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"fifo_overflow":{"tests":{"uart_fifo_overflow":{"max_time":17.65,"sim_time":64325.638,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"fifo_reset":{"tests":{"uart_fifo_reset":{"max_time":30.19,"sim_time":161210.09261300002,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_frame_err":{"tests":{"uart_intr":{"max_time":16.87,"sim_time":18907.43057,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_break_err":{"tests":{"uart_intr":{"max_time":16.87,"sim_time":18907.43057,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_timeout":{"tests":{"uart_intr":{"max_time":16.87,"sim_time":18907.43057,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"perf":{"tests":{"uart_perf":{"max_time":154.17,"sim_time":17489.571374000003,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"sys_loopback":{"tests":{"uart_loopback":{"max_time":2.79,"sim_time":5529.623212,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"line_loopback":{"tests":{"uart_loopback":{"max_time":2.79,"sim_time":5529.623212,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_noise_filter":{"tests":{"uart_noise_filter":{"max_time":15.28,"sim_time":12222.350584000002,"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":6.84,"sim_time":5381.249302,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"tx_overide":{"tests":{"uart_tx_ovrd":{"max_time":10.35,"sim_time":6783.845558,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"rx_oversample":{"tests":{"uart_rx_oversample":{"max_time":12.99,"sim_time":5384.295218,"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":507.31,"sim_time":115303.413217,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"stress_all":{"tests":{"uart_stress_all":{"max_time":435.59,"sim_time":169805.11389100002,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"alert_test":{"tests":{"uart_alert_test":{"max_time":0.86,"sim_time":14.280163,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"intr_test":{"tests":{"uart_intr_test":{"max_time":0.77,"sim_time":23.145554,"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":1.71,"sim_time":173.955335,"passed":1,"total":1,"percent":100.0}},"passed":1,"total":1,"percent":100.0},"tl_d_illegal_access":{"tests":{"uart_tl_errors":{"max_time":1.71,"sim_time":173.955335,"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":0.81,"sim_time":14.365581,"passed":1,"total":1,"percent":100.0},"uart_csr_rw":{"max_time":0.85,"sim_time":96.88008900000001,"passed":1,"total":1,"percent":100.0},"uart_csr_aliasing":{"max_time":0.99,"sim_time":64.14907699999999,"passed":1,"total":1,"percent":100.0},"uart_same_csr_outstanding":{"max_time":0.74,"sim_time":19.932126,"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":0.81,"sim_time":14.365581,"passed":1,"total":1,"percent":100.0},"uart_csr_rw":{"max_time":0.85,"sim_time":96.88008900000001,"passed":1,"total":1,"percent":100.0},"uart_csr_aliasing":{"max_time":0.99,"sim_time":64.14907699999999,"passed":1,"total":1,"percent":100.0},"uart_same_csr_outstanding":{"max_time":0.74,"sim_time":19.932126,"passed":1,"total":1,"percent":100.0}},"passed":4,"total":4,"percent":100.0}},"passed":21,"total":22,"percent":95.45454545454545},"V2S":{"testpoints":{"tl_intg_err":{"tests":{"uart_sec_cm":{"max_time":1.25,"sim_time":110.198821,"passed":1,"total":1,"percent":100.0},"uart_tl_intg_err":{"max_time":1.49,"sim_time":93.406938,"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":1.49,"sim_time":93.406938,"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":13.19,"sim_time":14979.176507,"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":99.17,"branch":97.44,"condition_expression":95.22,"toggle":91.55,"fsm":null},"assertion":97.12,"functional":61.69},"cov_report_page":"/nightly/current_run/scratch/master/uart-sim-vcs/cov_report/dashboard.html","failed_jobs":{"buckets":{"UVM_ERROR (uart_scoreboard.sv:501) scoreboard [scoreboard] rxlvl mismatch exp: * (+/-1), act: *, clk_pulses: *":[{"name":"uart_noise_filter","qual_name":"0.uart_noise_filter.83836286072931885159482291312826941634626373300086639884390675595029788109837","seed":83836286072931885159482291312826941634626373300086639884390675595029788109837,"line":77,"log_path":"/nightly/current_run/scratch/master/uart-sim-vcs/0.uart_noise_filter/latest/run.log","log_context":["UVM_ERROR @ 4648222803 ps: (uart_scoreboard.sv:462) uvm_test_top.env.scoreboard [uvm_test_top.env.scoreboard] unexpected read when fifo is empty\n","UVM_ERROR @ 4648233220 ps: (uart_scoreboard.sv:531) [uvm_test_top.env.scoreboard] Check failed csr.get_mirrored_value() == item.d_data (98 [0x62] vs 255 [0xff]) reg name: uart_reg_block.rdata\n","UVM_ERROR @ 4675088246 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 @ 4675088246 ps: (csr_utils_pkg.sv:456) [csr_utils_pkg::csr_rd_check.isolation_fork.unnamed$$_0] Check failed obs == exp (0 [0x0] vs 1 [0x1]) Regname: uart_reg_block.status.rxidle reset value: 0x1 \n"]}],"UVM_ERROR (uart_scoreboard.sv:393) [scoreboard] Check failed get_field_val(ral.status.rxidle, item.d_data) == rx_idle_exp (* [*] vs * [*]) check rx_idle fail: rx_en = *, uart_rx_clk_pulses = *":[{"name":"uart_stress_all_with_rand_reset","qual_name":"0.uart_stress_all_with_rand_reset.43479699334910294837289642644460541917566075301025568739972690228332499710847","seed":43479699334910294837289642644460541917566075301025568739972690228332499710847,"line":142,"log_path":"/nightly/current_run/scratch/master/uart-sim-vcs/0.uart_stress_all_with_rand_reset/latest/run.log","log_context":["UVM_ERROR @ 12800996867 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 @ 12807087770 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 @ 12807996860 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 @ 12813724127 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"]}]}},"passed":25,"total":27,"percent":92.5925925925926}