Add uvm environment

.github/workflows/uvm_ci.yaml

@@ -0,0 +1,144 @@
+name: Run UVM all tests
+
+on:
+  push: # This now triggers on pushes to any branch
+  pull_request: # This now triggers on pull requests to any branch
+
+jobs:
+  verify_APB:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+
+      - name: download docker
+        run: |
+          docker pull efabless/dv:cocotb
+
+      - name: Navigate to verify/uvm-python and run tests
+        run: |
+          cd verify/uvm-python
+          make run_all_tests RUN_MERGE_COVERAGE=false
+
+      - name: Check for test results in run
+        run: |
+          cd verify/uvm-python
+          passed_count=$(find sim/default_tag -type f -name 'passed' | wc -l)
+          failed_count=$(find sim/default_tag -type f -name 'failed' | wc -l)
+          unknown_count=$(find sim/default_tag -type f -name 'unknown' | wc -l)
+
+          echo "Passed: $passed_count"
+          echo "Failed: $failed_count"
+          echo "Unknown: $unknown_count"
+
+          if [ "$passed_count" -eq 0 ]; then
+            echo "Error: No passed test results found"
+            exit 1
+          elif [ "$failed_count" -ne 0 ] || [ "$unknown_count" -ne 0 ]; then
+            echo "Error: There are failed or unknown test results"
+            exit 1
+          else
+            echo "All tests passed successfully"
+          fi
+      - name: tar failed tests
+        if: failure()
+        run: |
+          cd verify/uvm-python
+          tar -czf failed_tests.tar.gz sim/default_tag
+
+      - name: upload failed tests
+        if: failure()
+        uses: actions/upload-artifact@v2
+        with:
+          name: failed_tests
+          path: verify/uvm-python/failed_tests.tar.gz
+
+  verify_AHB:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+
+      - name: download docker
+        run: |
+          docker pull efabless/dv:cocotb
+
+      - name: Navigate to verify/uvm-python and run tests
+        run: |
+          cd verify/uvm-python
+          make run_all_tests RUN_MERGE_COVERAGE=false BUS_TYPE=AHB
+
+      - name: Check for test results in run
+        run: |
+          cd verify/uvm-python
+          passed_count=$(find sim/default_tag -type f -name 'passed' | wc -l)
+          failed_count=$(find sim/default_tag -type f -name 'failed' | wc -l)
+          unknown_count=$(find sim/default_tag -type f -name 'unknown' | wc -l)
+
+          echo "Passed: $passed_count"
+          echo "Failed: $failed_count"
+          echo "Unknown: $unknown_count"
+
+          if [ "$passed_count" -eq 0 ]; then
+            echo "Error: No passed test results found"
+            exit 1
+          elif [ "$failed_count" -ne 0 ] || [ "$unknown_count" -ne 0 ]; then
+            echo "Error: There are failed or unknown test results"
+            exit 1
+          else
+            echo "All tests passed successfully"
+          fi
+      - name: tar failed tests
+        if: failure()
+        run: |
+          cd verify/uvm-python
+          tar -czf failed_tests.tar.gz sim/default_tag
+
+      - name: upload failed tests
+        if: failure()
+        uses: actions/upload-artifact@v2
+        with:
+          name: failed_tests
+          path: verify/uvm-python/failed_tests.tar.gz
+
+  lint: # Lint the RTL code
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+
+      - name: download docker
+        run: |
+          docker pull efabless/dv:cocotb
+
+      - uses: actions/checkout@v2
+      - name: Lint
+        run: |
+          cd verify/uvm-python
+          make lint BUS_TYPE=APB
+          cnt=$(grep -c "Error" "sim/linter.log")
+          if ! [[ $cnt ]]; then cnt=0; fi
+          if [[ $cnt -eq 1 ]]; then exit 0; fi
+          exit 2
+          cnt=$(grep -c "Warning" "sim/linter.log")
+          if ! [[ $cnt ]]; then cnt=0; fi
+          if [[ $cnt -eq 1 ]]; then exit 0; fi
+          exit 2
+      - name: Upload lint results
+        if: failure()
+        uses: actions/upload-artifact@v2
+        with:
+          name: lint_results.log
+          path: verify/uvm-python/sim/linter.log
+
+

hdl/rtl/EF_UART.v

@@ -110,6 +110,7 @@ module EF_UART #(parameter  MDW = 9,        // Max data size/width
     aucohl_glitch_filter #(.N(GFLEN)) rx_glitch_filter (
         .clk(clk),
         .rst_n(rst_n),
+        .en(glitch_filter_en),
         .in(rx_synched),
         .out(rx_filtered)
     );
@@ -266,7 +267,7 @@ module UART_RX #(parameter NUM_SAMPLES = 16, MDW = 8)(
     reg [3:0]   b_reg;            //baud-rate/over sampling counter
     reg [3:0]   b_next;
     reg [3:0]   count_reg;        //data-bit counter
-    reg [2:0]   count_next;
+    reg [3:0]   count_next;
     reg [8:0]   data_reg;         //data register
     reg [8:0]   data_next;
     reg         p_error_reg;
@@ -308,6 +309,7 @@ module UART_RX #(parameter NUM_SAMPLES = 16, MDW = 8)(
         data_next = data_reg;
         rx_done = 1'b0;
         p_error_next = 1'b0;
+        f_error_next = 1'b0;
 
         case(current_state)
             idle_st:
@@ -441,16 +443,16 @@ module UART_TX #(parameter NUM_SAMPLES = 16, MDW = 8)(
     reg [2:0]   next_state;
     reg [3:0]   b_reg;          // baud tick counter
     reg [3:0]   b_next;
-    reg [2:0]   count_reg;      // data bit counter
-    reg [2:0]   count_next;
+    reg [3:0]   count_reg;      // data bit counter
+    reg [3:0]   count_next;
     reg [8:0]   data_reg;       // data register
     reg [8:0]   data_next;
     reg         tx_reg;         // output data reg
     reg         tx_next;
 
     	// prepare the data to claculate the parity by removing any extra bits entered
 	// by the user by error
-    	wire [MDW-1] pdata = (d_in) & ~(MDW'hFF << data_size);
+    	wire [MDW-1] pdata = (d_in) & ~({MDW{1'b1}} << data_size);
 
     //State Machine  
     always @(posedge clk, negedge resetn) begin

hdl/rtl/bus_wrappers/EF_UART_APB.v

@@ -243,7 +243,7 @@ module EF_UART_APB #(
 	assign PREADY = 1'b1;
 
 	assign	RXDATA_WIRE = rdata;
-	assign	rd = (apb_re & (PADDR[`APB_AW-1:0] == RXDATA_REG_OFFSET) & PENABLE);
+	assign	rd = (apb_re & (PADDR[`APB_AW-1:0] == RXDATA_REG_OFFSET));
 	assign	wdata = PWDATA;
 	assign	wr = (apb_we & (PADDR[`APB_AW-1:0] == TXDATA_REG_OFFSET));
 endmodule

verify/uvm-python/.gitignore

@@ -0,0 +1,13 @@
+*.yalm
+*.html
+*.pyc
+*/__pycache__/
+*.code-workspace
+*.log
+*.vcd
+/sim/
+/coverageReports/
+*.xml
+*.gtkw
+/EF_UVM/
+IP_Utilities/

verify/uvm-python/Makefile

@@ -0,0 +1,46 @@
+PLUSARGS += "+UVM_VERBOSITY=UVM_HIGH"
+TOPLEVEL := top
+MODULE   ?= top_module
+AHB_FILES ?= $(PWD)/../../hdl/rtl/bus_wrappers/EF_UART_AHBL.pp.v
+APB_FILES ?= $(PWD)/../../hdl/rtl/bus_wrappers/EF_UART_APB.pp.v
+WB_FILES ?= $(PWD)/../../hdl/rtl/bus_wrappers/EF_UART_wb.v
+HDL_FILES ?= $(PWD)/IP_Utilities/rtl/aucohl_lib.v $(PWD)/IP_Utilities/rtl/aucohl_rtl.vh  $(PWD)/../../hdl/rtl/EF_UART.v 
+VERILOG_SOURCES ?=  $(PWD)/top.v $(AHB_FILES) $(APB_FILES) $(WB_FILES) $(HDL_FILES)
+RTL_MACROS += ""
+BUS_TYPE ?= APB
+ifeq ($(BUS_TYPE),APB)
+    RTL_MACROS += -DBUS_TYPE_APB
+else ifeq ($(BUS_TYPE),AHB)
+    RTL_MACROS += -DBUS_TYPE_AHB
+else ifeq ($(BUS_TYPE),WISHBONE)
+    RTL_MACROS += -DBUS_TYPE_WISHBONE
+endif
+# RTL_MACROS ?= "-DSKIP_WAVE_DUMP"
+YAML_FILE = $(PWD)/../../EF_UART.yaml
+MAKEFLAGS += --no-print-directory
+
+# List of tests
+TESTS := TX_StressTest RX_StressTest LoopbackTest PrescalarStressTest LengthParityTXStressTest LengthParityRXStressTest WriteReadRegsTest
+# TESTS := TX_StressTest 
+
+# Variable for tag - set this as required
+SIM_TAG ?= default_tag
+
+# Define SIM_PATH variable
+SIM_PATH := $(PWD)/sim/$(SIM_TAG)
+
+# Check and clone EF_UVM repository at the beginning of the Makefile execution
+
+clone_ip_util := $(shell if [ ! -d "IP_Utilities" ]; then \
+	echo "Cloning the IP_Utilities repository..."; \
+	git clone https://github.com/shalan/IP_Utilities.git; \
+fi;)
+
+clone_ef_uvm := $(shell if [ ! -d "EF_UVM" ]; then \
+	echo "Cloning the EF_UVM repository..."; \
+	git clone https://github.com/efabless/EF_UVM.git; \
+fi;)
+
+
+
+include EF_UVM/Makefile.test