updated readme for testing
diff --git a/verilog/dv/caravel/fpga_250/Makefile b/verilog/dv/caravel/fpga_250/Makefile index a5e9d36..4de90d0 100644 --- a/verilog/dv/caravel/fpga_250/Makefile +++ b/verilog/dv/caravel/fpga_250/Makefile
@@ -3,11 +3,12 @@ .SUFFIXES: .SILENT: clean all -PATTERNS = basic_config +PATTERNS = basic_config standalone_test integration all: ${PATTERNS} for i in ${PATTERNS}; do \ - ( cd $$i && make -f Makefile $${i}.vcd &> verify.log && grep Monitor verify.log) ; \ + echo "Tesing $$i"; \ + ( cd $$i && make -f Makefile &> verify.log) ; \ done clean: ${PATTERNS}
diff --git a/verilog/dv/caravel/fpga_250/README.md b/verilog/dv/caravel/fpga_250/README.md index 4852f2c..f2e1fda 100644 --- a/verilog/dv/caravel/fpga_250/README.md +++ b/verilog/dv/caravel/fpga_250/README.md
@@ -1,5 +1,29 @@ -# Smoke tests +# FPGA250 tests -1) Basic Configuration test: +1) Basic Configuration test: - * Configures the fpga with a bitstream + * A quick test to check if the wishbone configuration cores of the user project + module (fpga250) is able to communicate with the Caravel SoC via the Wishbone transaction. + +2) Standalone test: + + * A user project (fpga250) test without the Caravel SoC system. A pre-generated + bitstream implements some simple circuit on the FPGA. The states of the circuit + (Flipflops, CLB outputs, and GPIOs) are compared against a set of golden outputs + to check if the test is passed. + +3) Integration test: + + * An integration test of the Caravel and the user project module. It is an extended + version of the Basic config test, but now the entire bitstream is compiled in + the software code and is loaded to the user project module via the Wishbone interface. + The bitstream initializes the states of some FFs and routes them to configured LUTs. + The final result is routed to an io output pin (`mprj_io[24]`) (TODO: some figure). + +The simulation testbenches can be compiled and run with IVerilog. However, if it +is possible, we would like to suggest using Synopsys VCS instead, since it is +generally much faster (especially for the integration test where loading a complete bitstream +of 58,184 bits might take days to finish if using IVerilog, but under 5 minutes +in the case of VCS). A caveat with using VCS is that it is not happy with the +`default_nettype none` in some of the sky130 primitive Verilog files, so those +need to be replaced with `default_nettype wire`.
diff --git a/verilog/dv/caravel/fpga_250/basic_config/Makefile b/verilog/dv/caravel/fpga_250/basic_config/Makefile index 85b0b1d..d0bced5 100644 --- a/verilog/dv/caravel/fpga_250/basic_config/Makefile +++ b/verilog/dv/caravel/fpga_250/basic_config/Makefile
@@ -1,7 +1,7 @@ FIRMWARE_PATH = ../.. RTL_PATH = ../../../../rtl IP_PATH = ../../../../ip -BEHAVIOURAL_MODELS = ../../ +BEHAVIOURAL_MODELS = ../../ SCRIPTS = ../../../../../scripts/ @@ -29,7 +29,7 @@ ${GCC_PATH}/${GCC_PREFIX}-gcc -march=rv32imc -mabi=ilp32 -Wl,-Bstatic,-T,$(FIRMWARE_PATH)/sections.lds,--strip-debug -ffreestanding -nostdlib -o $@ $(FIRMWARE_PATH)/start.s $< %.hex: %.elf - ${GCC_PATH}/${GCC_PREFIX}-objcopy -O verilog $< $@ + ${GCC_PATH}/${GCC_PREFIX}-objcopy -O verilog $< $@ # to fix flash base address sed -i 's/@10000000/@00000000/g' $@ @@ -37,7 +37,8 @@ ${GCC_PATH}/${GCC_PREFIX}-objcopy -O binary $< /dev/stdout | tail -c +1048577 > $@ %.bits.h: %.bits - ${SCRIPTS}/bitstream2header.py $< $@ + python3 ${SCRIPTS}/bitstream2header.py $< $@ + # ---- Clean ---- clean:
diff --git a/verilog/dv/caravel/fpga_250/basic_config/basic_config.bits b/verilog/dv/caravel/fpga_250/basic_config/basic_config.bits index 5349774..0ab0003 100644 --- a/verilog/dv/caravel/fpga_250/basic_config/basic_config.bits +++ b/verilog/dv/caravel/fpga_250/basic_config/basic_config.bits
@@ -1 +1 @@ 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diff --git a/verilog/dv/caravel/fpga_250/integration/Makefile b/verilog/dv/caravel/fpga_250/integration/Makefile index 0040550..b6bd1d8 100644 --- a/verilog/dv/caravel/fpga_250/integration/Makefile +++ b/verilog/dv/caravel/fpga_250/integration/Makefile
@@ -1,23 +1,29 @@ -VCS = vcs -full64 +VCS = vcs -full64 +IVERILOG = iverilog + FIRMWARE_PATH = ../.. RTL_PATH = ../../../../rtl IP_PATH = ../../../../ip BEHAVIOURAL_MODELS = ../.. -PDK_PATH = $(PDK_ROOT)/sky130A SIM_PATH = .. SCRIPTS = ../../../../../scripts -GCC_PATH = /home/aa/users/tan.nqd/riscv64-unknown-elf-gcc/bin -GCC_PREFIX?=riscv64-unknown-elf +GCC_PATH?=/ef/apps/bin +GCC_PREFIX?=riscv32-unknown-elf +PDK_PATH?=/ef/tech/SW/sky130A INCS = $(RTL_PATH)+$(IP_PATH)+$(BEHAVIOURAL_MODELS)+$(SIM_PATH)+$(PDK_PATH) SRCS = integration_tb.v +all: sim-rtl + # Bare minimum required VCS flag -OPTS = -sverilog +VCS_OPTS = -sverilog SIMV = ./integration.simv +VVP = ./integration.vvp + HEX = software.hex software.elf: software.c bitstream.h $(FIRMWARE_PATH)/sections.lds $(FIRMWARE_PATH)/start.s ${GCC_PATH}/${GCC_PREFIX}-gcc -march=rv32imc -mabi=ilp32 -Wl,-Bstatic,-T,$(FIRMWARE_PATH)/sections.lds,--strip-debug -ffreestanding -nostdlib -o $@ $(FIRMWARE_PATH)/start.s $< @@ -31,10 +37,16 @@ python3 ${SCRIPTS}/bitstream2header.py $< $@ $(SIMV): $(SRCS) $(HEX) - $(VCS) $(OPTS) +incdir+$(INCS) +define+FUNCTIONAL+SIM+USE_POWER_PINS $(SRCS) -o $@ + $(VCS) $(VCS_OPTS) +incdir+$(INCS) +define+FUNCTIONAL+SIM+USE_POWER_PINS $(SRCS) -o $@ sim-rtl: $(SIMV) - $(SIMV) -q +ntb_random_seed_automatic +load_gpio_output=gpio_output.txt + $(SIMV) -q +ntb_random_seed_automatic + +$(VVP): $(SRCS) + $(IVERILOG) -g2005-sv -I $(RTL_PATH) -I $(IP_PATH) -I $(BEHAVIOURAL_MODELS) -I $(SIM_PATH) -I $(PDK_PATH) -DSIM -DFUNCTIONAL -DUSE_POWER_PINS -DUNIT_DELAY="#0.1" $(SRCS) -o $@ + +sim-rtl-iverilog: $(VVP) + vvp $(VVP) clean: - rm -rf *simv* csrc ucli.key *.elf *.bits.h *.hex *.bin *.vcd *.log + rm -rf *simv* csrc ucli.key *.elf *.bits.h *.hex *.bin *.vcd *.log *.vvp
diff --git a/verilog/dv/caravel/fpga_250/integration/integration_tb.v b/verilog/dv/caravel/fpga_250/integration/integration_tb.v index ccaaac5..57567a4 100644 --- a/verilog/dv/caravel/fpga_250/integration/integration_tb.v +++ b/verilog/dv/caravel/fpga_250/integration/integration_tb.v
@@ -57,7 +57,8 @@ $display("FPGA250_GPIO_EAST=%b", uut.mprj.fpga250.gpio_east); $display("FPGA250_GPIO_WEST=%b", uut.mprj.fpga250.gpio_west); - if (uut.mprj.fpga250.gpio_south[0] === 1'b1) + if (uut.mprj.fpga250.gpio_south[0] === 1'b1 && + uut.mprj.fpga250.gpio_south[0] === mprj_io[24]) $display("[gpio test] PASSED!"); else $display("[gpio test] FAILED!");
diff --git a/verilog/dv/caravel/fpga_250/integration/software.c b/verilog/dv/caravel/fpga_250/integration/software.c index a5cf0c1..c7fbc76 100644 --- a/verilog/dv/caravel/fpga_250/integration/software.c +++ b/verilog/dv/caravel/fpga_250/integration/software.c
@@ -61,6 +61,7 @@ /* Apply configuration */ reg_mprj_xfer = 1; + while (reg_mprj_xfer == 1); *config_base_00 = 0; *counters_00 = 0xFFFFFFFF;
diff --git a/verilog/dv/caravel/fpga_250/standalone_test/Makefile b/verilog/dv/caravel/fpga_250/standalone_test/Makefile index a4c1ff5..61d6138 100644 --- a/verilog/dv/caravel/fpga_250/standalone_test/Makefile +++ b/verilog/dv/caravel/fpga_250/standalone_test/Makefile
@@ -1,27 +1,40 @@ VCS = vcs -full64 +IVERILOG = iverilog FIRMWARE_PATH = ../.. RTL_PATH = ../../../../rtl IP_PATH = ../../../../ip BEHAVIOURAL_MODELS = ../.. SIM_PATH = .. -PDK_PATH = $(PDK_ROOT)/sky130A SCRIPTS = ../../../../../scripts +GCC_PATH?=/ef/apps/bin +GCC_PREFIX?=riscv32-unknown-elf +PDK_PATH?=/ef/tech/SW/sky130A + INCS = $(RTL_PATH)+$(IP_PATH)+$(BEHAVIOURAL_MODELS)+$(SIM_PATH)+$(PDK_PATH) SRCS = user_project_wrapper_tb.v +all: sim-rtl + # Bare minimum required VCS flag -OPTS = -sverilog +VCS_OPTS = -sverilog SIMV = ./standalone_test.simv +VVP = ./standalone_test.vvp $(SIMV): $(SRCS) - $(VCS) $(OPTS) +incdir+$(INCS) +define+SIM+FUNCTIONAL+USE_POWER_PINS+UNIT_DELAY="#0.1" $(SRCS) -o $@ + $(VCS) $(VCS_OPTS) +incdir+$(INCS) +define+SIM+FUNCTIONAL+USE_POWER_PINS+UNIT_DELAY="#0.1" $(SRCS) -o $@ sim-rtl: $(SIMV) $(SIMV) -q +ntb_random_seed_automatic +load_config=bitstream.txt +load_sync_output=sync_output.txt +load_comb_output=comb_output.txt +load_gpio_output=gpio_output.txt +$(VVP): $(SRCS) + $(IVERILOG) -g2005-sv -I $(RTL_PATH) -I $(IP_PATH) -I $(BEHAVIOURAL_MODELS) -I $(SIM_PATH) -I $(PDK_PATH) -DSIM -DFUNCTIONAL -DUSE_POWER_PINS -DUNIT_DELAY="#0.1" $(SRCS) -o $@ + +sim-rtl-iverilog: $(VVP) + vvp $(VVP) +load_config=bitstream.txt +load_sync_output=sync_output.txt +load_comb_output=comb_output.txt +load_gpio_output=gpio_output.txt + clean: - rm -rf *simv* csrc ucli.key *.elf *.bin *.vcd *.log + rm -rf *simv* csrc ucli.key *.elf *.bin *.vcd *.log *.vvp