Browse Source

Add VHDL sim for RTL & Verilog sim for post-syn simulation

main
T. Meissner 2 years ago
parent
commit
f8ba0b17c2
3 changed files with 283 additions and 0 deletions
  1. +108
    -0
      neorv32_aes/sim/Makefile
  2. +73
    -0
      neorv32_aes/sim/tb_neorv32_aes.vhd
  3. +102
    -0
      neorv32_aes/syn/tb_neorv32_aes.v

+ 108
- 0
neorv32_aes/sim/Makefile View File

@ -0,0 +1,108 @@
DESIGN_NAME := neorv32_aes
NEORV32_CORE_DIR := ../../neorv32/rtl/core
NEORV32_PKG := $(NEORV32_CORE_DIR)/neorv32_package.vhd
NEORV32_APP_SRC := $(NEORV32_CORE_DIR)/neorv32_application_image.vhd
NEORV32_TEMPLATES := ../../neorv32/rtl/processor_templates
NEORV32_MEM_ENTITIES := \
$(NEORV32_CORE_DIR)/neorv32_dmem.entity.vhd \
$(NEORV32_CORE_DIR)/neorv32_imem.entity.vhd
NEORV32_MEM_SRC := \
$(NEORV32_CORE_DIR)/mem/neorv32_imem.default.vhd \
$(NEORV32_CORE_DIR)/mem/neorv32_dmem.default.vhd
NEORV32_CORE_SRC := \
$(NEORV32_CORE_DIR)/neorv32_bootloader_image.vhd \
$(NEORV32_CORE_DIR)/neorv32_boot_rom.vhd \
$(NEORV32_CORE_DIR)/neorv32_bus_keeper.vhd \
$(NEORV32_CORE_DIR)/neorv32_busswitch.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_alu.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_bus.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_control.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_cp_bitmanip.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_cp_cfu.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_cp_fpu.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_cp_muldiv.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_cp_shifter.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_decompressor.vhd \
$(NEORV32_CORE_DIR)/neorv32_cpu_regfile.vhd \
$(NEORV32_CORE_DIR)/neorv32_debug_dm.vhd \
$(NEORV32_CORE_DIR)/neorv32_debug_dtm.vhd \
$(NEORV32_CORE_DIR)/neorv32_fifo.vhd \
$(NEORV32_CORE_DIR)/neorv32_gpio.vhd \
$(NEORV32_CORE_DIR)/neorv32_gptmr.vhd \
$(NEORV32_CORE_DIR)/neorv32_icache.vhd \
$(NEORV32_CORE_DIR)/neorv32_mtime.vhd \
$(NEORV32_CORE_DIR)/neorv32_neoled.vhd \
$(NEORV32_CORE_DIR)/neorv32_onewire.vhd \
$(NEORV32_CORE_DIR)/neorv32_pwm.vhd \
$(NEORV32_CORE_DIR)/neorv32_slink.vhd \
$(NEORV32_CORE_DIR)/neorv32_spi.vhd \
$(NEORV32_CORE_DIR)/neorv32_sysinfo.vhd \
$(NEORV32_CORE_DIR)/neorv32_trng.vhd \
$(NEORV32_CORE_DIR)/neorv32_twi.vhd \
$(NEORV32_CORE_DIR)/neorv32_uart.vhd \
$(NEORV32_CORE_DIR)/neorv32_wdt.vhd \
$(NEORV32_CORE_DIR)/neorv32_wishbone.vhd \
$(NEORV32_CORE_DIR)/neorv32_xip.vhd \
$(NEORV32_CORE_DIR)/neorv32_xirq.vhd \
$(NEORV32_CORE_DIR)/neorv32_cfs.vhd \
$(NEORV32_CORE_DIR)/neorv32_cfs_aes.vhd \
../rtl/neorv32_top.vhd
NEORV32_SRC := ${NEORV32_PKG} ${NEORV32_APP_SRC} ${NEORV32_MEM_ENTITIES} \
${NEORV32_MEM_SRC} ${NEORV32_CORE_SRC}
AES_DIR := ../../cryptocores/aes/rtl/vhdl
CRYPTO_SRC := \
$(AES_DIR)/aes_pkg.vhd \
$(AES_DIR)/aes_enc.vhd \
$(AES_DIR)/aes_dec.vhd \
$(AES_DIR)/aes.vhd \
$(AES_DIR)/../../../ctraes/rtl/vhdl/ctraes.vhd
WORK_FILES := ../rtl/${DESIGN_NAME}.vhd tb_${DESIGN_NAME}.vhd
GM_FILES := ../../lib/rtl_components.vhd ../../lib/sim_components.vhd
SIM_FLAGS := --std=08 -fpsl --workdir=work -Pwork
.PHONY: all compile sim clean
all: sim
compile: tb_${DESIGN_NAME}
work/work-obj08.cf: ${WORK_FILES} work/gatemate-obj08.cf work/neorv32-obj08.cf
mkdir -p work
ghdl -a ${SIM_FLAGS} --work=work ${WORK_FILES}
work/neorv32-obj08.cf: work/gatemate-obj08.cf work/cryptocores-obj08.cf ${NEORV32_SRC}
mkdir -p work
ghdl -a $(SIM_FLAGS) --work=neorv32 ${NEORV32_SRC}
work/cryptocores-obj08.cf: ${CRYPTO_SRC}
mkdir -p work
ghdl -a $(SIM_FLAGS) --work=cryptocores ${CRYPTO_SRC}
work/gatemate-obj08.cf: ${GM_FILES}
mkdir -p work
ghdl -a ${SIM_FLAGS} --work=gatemate ${GM_FILES}
tb_${DESIGN_NAME}: work/gatemate-obj08.cf work/cryptocores-obj08.cf work/neorv32-obj08.cf work/work-obj08.cf
@echo "Elaborate testbench & design ..."
ghdl -e ${SIM_FLAGS} -Pwork $@
sim: tb_${DESIGN_NAME}
@echo "Run testbench ..."
ghdl -r ${SIM_FLAGS} -Pwork tb_${DESIGN_NAME} --assert-level=error --ieee-asserts=disable --wave=tb_${DESIGN_NAME}.ghw
work:
mkdir $@
clean:
@echo "Cleaning simulation files ..."
rm -rf tb_${DESIGN_NAME} tb_${DESIGN_NAME}.ghw *.o work/

+ 73
- 0
neorv32_aes/sim/tb_neorv32_aes.vhd View File

@ -0,0 +1,73 @@
library ieee ;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
use std.env.all;
entity tb_neorv32_aes is
end entity tb_neorv32_aes;
architecture sim of tb_neorv32_aes is
constant c_baudrate : natural := 9600;
constant c_period_ns : time := 1000000000 / c_baudrate * ns;
procedure uart_send ( data : in std_logic_vector(7 downto 0);
signal tx : out std_logic) is
begin
report "UART send: 0x" & to_hstring(data);
tx <= '0';
wait for c_period_ns;
for i in 0 to 7 loop
tx <= data(i);
wait for c_period_ns;
end loop;
tx <= '1';
wait for c_period_ns;
end procedure;
procedure uart_recv ( data : out std_logic_vector(7 downto 0);
signal rx : in std_logic) is
begin
wait until not rx;
wait for c_period_ns; -- Skip start bit
wait for c_period_ns/2;
for i in 0 to 7 loop
data(i) := rx;
wait for c_period_ns;
end loop;
report "UART recv: 0x" & to_hstring(data);
end procedure;
signal s_clk : std_logic := '1';
signal s_rst_n : std_logic := '0';
signal s_len_n : std_logic_vector(7 downto 0);
signal s_debug : std_logic_vector(15 downto 0);
begin
dut : entity work.neorv32_aes
port map (
clk_i => s_clk,
rst_n_i => s_rst_n,
--
led_n_o => s_len_n,
--uart_tx_o => s_uart_tx
--uart_rx_i => s_uart_rx
debug_o => s_debug
);
s_rst_n <= '1' after 120 ns;
s_clk <= not s_clk after 50 ns;
process is
begin
wait for 2 ms;
stop(0);
end process;
end architecture;

+ 102
- 0
neorv32_aes/syn/tb_neorv32_aes.v View File

@ -0,0 +1,102 @@
`timescale 1 ns/10 ps // time-unit = 1 ns, precision = 10 ps
`define USE_RAM
// simplified CC_PLL model
module CC_PLL #(
parameter REF_CLK = "", // e.g. "10.0"
parameter OUT_CLK = "", // e.g. "50.0"
parameter PERF_MD = "", // LOWPOWER, ECONOMY, SPEED
parameter LOW_JITTER = 1,
parameter CI_FILTER_CONST = 2,
parameter CP_FILTER_CONST = 4
)(
input CLK_REF, CLK_FEEDBACK, USR_CLK_REF,
input USR_LOCKED_STDY_RST, USR_SET_SEL,
output USR_PLL_LOCKED_STDY, USR_PLL_LOCKED,
output CLK270, CLK180, CLK90, CLK0, CLK_REF_OUT
);
reg r_pll_clk;
reg r_user_pll_locked;
// OUT_FREQ = 10 MHz
localparam clk_half_period = 50;
initial begin
r_pll_clk = 1'b0;
r_user_pll_locked = 1'b1;
end
always #clk_half_period r_pll_clk = ~r_pll_clk;
assign CLK0 = r_pll_clk;
assign USR_PLL_LOCKED = r_user_pll_locked;
endmodule
// simplified CC_CFG_END model
module CC_CFG_END (
output CFG_END
);
assign CFG_END = 1'b1;
endmodule
module tb_neorv32_aes;
// DUT in/out
reg clk = 1'b0;
reg rst_n = 1'b1;
wire [7:0] led;
wire [63:0] debug;
reg uart_rx;
wire uart_tx;
// Testbench variables
// Testbench 1/2 clock period
localparam clk_half_period = 50;
// UART period calculation (9600 baud)
localparam uart_bit_period = 1000000000 / 9600;
localparam uart_bit_half_period = uart_bit_period/2;
neorv32_aes UUT (.clk_i(clk), .rst_n_i(rst_n), .led_n_o(led), .debug_o(debug));
// neorv32_aes UUT (.clk_i(clk), .rst_n_i(rst_n), .led_n_o(led), .uart_tx_o(uart_tx), .uart_rx_i(uart_rx));
// set dumpfile
initial begin
$dumpfile ("tb_neorv32_aes.fst");
$dumpvars (0, tb_neorv32_aes);
end
// Setup simulation
initial begin
uart_rx = 1'b1;
#1 rst_n = 1'b0;
#120 rst_n = 1'b1;
end
// Generate 10 mhz clock
always #clk_half_period clk = !clk;
// Stimuli generator
initial
forever @(posedge rst_n) begin
// Simulate for 100 us
#500_000
// @(negedge led[0]);
// #100
$display ("NEORV32 test finished");
$finish;
end
// Monitor
initial begin
$monitor("monitor time=%t ns, rst_n=%b, led=%b, imem.addr=%d, dmem.addr=%h", $time, rst_n, led, debug[31:2], debug[63:32]);
end
endmodule

Loading…
Cancel
Save