| //////////////////////////////////////////////////////////////////////////// |
| // SPDX-FileCopyrightText: 2021 , Dinesh Annayya |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // SPDX-License-Identifier: Apache-2.0 |
| // SPDX-FileContributor: Modified by Dinesh Annayya <dinesha@opencores.org> |
| ////////////////////////////////////////////////////////////////////// |
| //// //// |
| //// User Risc Core Boot Validation //// |
| //// //// |
| //// This file is part of the riscduino cores project //// |
| //// https://github.com/dineshannayya/riscuino.git //// |
| //// http://www.opencores.org/cores/riscuino/ //// |
| //// //// |
| //// Description //// |
| //// 1. Strap is set to RISC core auto Boot mode //// |
| //// 2. With Reset removal from caravel, User core boot up //// |
| //// 3. Risc-V firmware have UART Loop back mode //// |
| //// 4. Any UART Data Transmited by testbench will be loop back//// |
| //// 5. There are 40 Random char are transmited and compared //// |
| //// againt received data //// |
| //// //// |
| //// To Do: //// |
| //// nothing //// |
| //// //// |
| //// Author(s): //// |
| //// - Dinesh Annayya, dinesha@opencores.org //// |
| //// //// |
| //// Revision : //// |
| //// 0.1 - 12th June 2021, Dinesh A //// |
| //// //// |
| ////////////////////////////////////////////////////////////////////// |
| //// //// |
| //// Copyright (C) 2000 Authors and OPENCORES.ORG //// |
| //// //// |
| //// This source file may be used and distributed without //// |
| //// restriction provided that this copyright statement is not //// |
| //// removed from the file and that any derivative work contains //// |
| //// the original copyright notice and the associated disclaimer. //// |
| //// //// |
| //// This source file is free software; you can redistribute it //// |
| //// and/or modify it under the terms of the GNU Lesser General //// |
| //// Public License as published by the Free Software Foundation; //// |
| //// either version 2.1 of the License, or (at your option) any //// |
| //// later version. //// |
| //// //// |
| //// This source is distributed in the hope that it will be //// |
| //// useful, but WITHOUT ANY WARRANTY; without even the implied //// |
| //// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //// |
| //// PURPOSE. See the GNU Lesser General Public License for more //// |
| //// details. //// |
| //// //// |
| //// You should have received a copy of the GNU Lesser General //// |
| //// Public License along with this source; if not, download it //// |
| //// from http://www.opencores.org/lgpl.shtml //// |
| //// //// |
| ////////////////////////////////////////////////////////////////////// |
| |
| `default_nettype none |
| |
| `timescale 1 ns / 1 ps |
| |
| `include "uart_agent.v" |
| `include "user_params.svh" |
| |
| module risc_boot_tb; |
| reg clock; |
| reg RSTB; |
| reg CSB; |
| reg power1, power2; |
| reg power3, power4; |
| |
| wire gpio; |
| wire [37:0] mprj_io; |
| wire [7:0] mprj_io_0; |
| wire [15:0] checkbits; |
| |
| //---------------------------------- |
| // Uart Configuration |
| // --------------------------------- |
| reg [1:0] uart_data_bit ; |
| reg uart_stop_bits ; // 0: 1 stop bit; 1: 2 stop bit; |
| reg uart_stick_parity ; // 1: force even parity |
| reg uart_parity_en ; // parity enable |
| reg uart_even_odd_parity ; // 0: odd parity; 1: even parity |
| |
| reg [7:0] uart_data ; |
| reg [15:0] uart_divisor ; // divided by n * 16 |
| reg [15:0] uart_timeout ;// wait time limit |
| |
| reg [15:0] uart_rx_nu ; |
| reg [15:0] uart_tx_nu ; |
| reg [7:0] uart_write_data [0:39]; |
| reg uart_fifo_enable ; // fifo mode disable |
| reg test_fail ; |
| integer d_risc_id; |
| |
| integer i,j; |
| //--------------------------------- |
| |
| assign checkbits = mprj_io[31:16]; |
| |
| assign mprj_io[3] = (CSB == 1'b1) ? 1'b1 : 1'bz; |
| |
| // External clock is used by default. Make this artificially fast for the |
| // simulation. Normally this would be a slow clock and the digital PLL |
| // would be the fast clock. |
| |
| always #12.5 clock <= (clock === 1'b0); |
| |
| initial begin |
| clock = 0; |
| end |
| |
| pullup(mprj_io[3]); |
| |
| |
| `ifdef WFDUMP |
| initial |
| begin |
| $dumpfile("simx.vcd"); |
| $dumpvars(1,risc_boot_tb); |
| //$dumpvars(1,risc_boot_tb.u_spi_flash_256mb); |
| //$dumpvars(2,risc_boot_tb.u_top); |
| $dumpvars(1,risc_boot_tb.u_top.mprj); |
| $dumpvars(0,risc_boot_tb.u_top.mprj.u_wb_host); |
| $dumpvars(0,risc_boot_tb.u_top.mprj.u_pinmux); |
| //$dumpvars(0,risc_boot_tb.u_top.mprj.u_qspi_master); |
| $dumpvars(1,risc_boot_tb.u_top.mprj.u_riscv_top); |
| $dumpvars(0,risc_boot_tb.u_top.mprj.u_riscv_top.i_core_top_0); |
| //$dumpvars(0,risc_boot_tb.tb_uart); |
| //$dumpvars(0,risc_boot_tb.u_user_spiflash); |
| $display("Waveform Dump started"); |
| end |
| `endif |
| |
| initial begin |
| |
| $display("################# NOTE:#####################################"); |
| $display("This test assumes Caravel GPIO are pre-programmed with user_define.v value"); |
| $display("If you see RTL simulation fails, cross check mgmt_core_wrapper/verilog/includes/includes.rtl.caravel "); |
| $display(" From: -v $(CARAVEL_PATH)/rtl/user_defines.v "); |
| $display(" To: -v $(USER_PROJECT_VERILOG)/rtl/user_defines.v "); |
| $display(" Gate Sim expect to fail as caravel gate netlist have not generated based on user_define.v in user project"); |
| $display("#####################################################################################"); |
| |
| // Repeat cycles of 1000 clock edges as needed to complete testbench |
| repeat (80) begin |
| repeat (2000) @(posedge clock); |
| // $display("+1000 cycles"); |
| end |
| $display("%c[1;31m",27); |
| $display ("##########################################################"); |
| `ifdef GL |
| $display ("Monitor: Timeout, %m (GL) Failed"); |
| `else |
| $display ("Monitor: Timeout, %m (RTL) Failed"); |
| `endif |
| $display ("##########################################################"); |
| $display("%c[0m",27); |
| $finish; |
| end |
| |
| initial |
| begin |
| |
| $value$plusargs("risc_core_id=%d", d_risc_id); |
| |
| init(); |
| |
| uart_data_bit = 2'b11; |
| uart_stop_bits = 0; // 0: 1 stop bit; 1: 2 stop bit; |
| uart_stick_parity = 0; // 1: force even parity |
| uart_parity_en = 0; // parity enable |
| uart_even_odd_parity = 1; // 0: odd parity; 1: even parity |
| uart_divisor = 15;// divided by n * 16 |
| uart_timeout = 500;// wait time limit |
| uart_fifo_enable = 0; // fifo mode disable |
| |
| #200; // Wait for reset removal |
| |
| // Wait for Managment core to boot up |
| |
| // Wait for user risc core to boot up |
| tb_uart.uart_init; |
| tb_uart.control_setup (uart_data_bit, uart_stop_bits, uart_parity_en, uart_even_odd_parity, |
| uart_stick_parity, uart_timeout, uart_divisor); |
| |
| |
| wait_riscv_boot(); |
| repeat (50000) @(posedge clock); |
| |
| for (i=0; i<40; i=i+1) |
| uart_write_data[i] = $random; |
| |
| |
| |
| fork |
| begin |
| for (i=0; i<40; i=i+1) |
| begin |
| $display ("\n... UART Agent Writing char %x ...", uart_write_data[i]); |
| tb_uart.write_char (uart_write_data[i]); |
| end |
| end |
| |
| begin |
| for (j=0; j<40; j=j+1) |
| begin |
| tb_uart.read_char_chk(uart_write_data[j]); |
| end |
| end |
| join |
| |
| #100 |
| tb_uart.report_status(uart_rx_nu, uart_tx_nu); |
| |
| test_fail = 0; |
| |
| // Check |
| // if all the 40 byte transmitted |
| // if all the 40 byte received |
| // if no error |
| if(uart_tx_nu != 40) test_fail = 1; |
| if(uart_rx_nu != 40) test_fail = 1; |
| if(tb_uart.err_cnt != 0) test_fail = 1; |
| |
| |
| $display("###################################################"); |
| if(test_fail == 0) begin |
| `ifdef GL |
| $display("Monitor: %m (GL) Passed"); |
| `else |
| $display("Monitor: %m (RTL) Passed"); |
| `endif |
| end else begin |
| `ifdef GL |
| $display("Monitor: %m (GL) Failed"); |
| `else |
| $display("Monitor: %m (RTL) Failed"); |
| `endif |
| end |
| $display("###################################################"); |
| #100 |
| $finish; |
| end |
| |
| |
| initial begin |
| CSB <= 1'b1; // Force CSB high |
| #2000; |
| #170000; |
| CSB = 1'b0; // CSB can be released |
| end |
| |
| initial begin // Power-up sequence |
| power1 <= 1'b0; |
| power2 <= 1'b0; |
| power3 <= 1'b0; |
| power4 <= 1'b0; |
| #100; |
| power1 <= 1'b1; |
| #100; |
| power2 <= 1'b1; |
| #100; |
| power3 <= 1'b1; |
| #100; |
| power4 <= 1'b1; |
| end |
| |
| //always @(mprj_io) begin |
| // #1 $display("MPRJ-IO state = %b ", mprj_io[7:0]); |
| //end |
| |
| wire flash_csb; |
| wire flash_clk; |
| wire flash_io0; |
| wire flash_io1; |
| |
| wire VDD3V3 = power1; |
| wire VDD1V8 = power2; |
| wire USER_VDD3V3 = power3; |
| wire USER_VDD1V8 = power4; |
| wire VSS = 1'b0; |
| |
| caravel u_top ( |
| .vddio (VDD3V3), |
| .vssio (VSS), |
| .vdda (VDD3V3), |
| .vssa (VSS), |
| .vccd (VDD1V8), |
| .vssd (VSS), |
| .vdda1 (USER_VDD3V3), |
| .vdda2 (USER_VDD3V3), |
| .vssa1 (VSS), |
| .vssa2 (VSS), |
| .vccd1 (USER_VDD1V8), |
| .vccd2 (USER_VDD1V8), |
| .vssd1 (VSS), |
| .vssd2 (VSS), |
| .clock (clock), |
| .gpio (gpio), |
| .mprj_io (mprj_io), |
| .flash_csb(flash_csb), |
| .flash_clk(flash_clk), |
| .flash_io0(flash_io0), |
| .flash_io1(flash_io1), |
| .resetb (RSTB) |
| ); |
| |
| spiflash #( |
| .FILENAME("risc_boot.hex") |
| ) spiflash ( |
| .csb(flash_csb), |
| .clk(flash_clk), |
| .io0(flash_io0), |
| .io1(flash_io1), |
| .io2(), // not used |
| .io3() // not used |
| ); |
| |
| //----------------------------------------- |
| // Connect Quad Flash to for usr Risc Core |
| //----------------------------------------- |
| |
| wire user_flash_clk = mprj_io[28]; |
| wire user_flash_csb = mprj_io[29]; |
| //tri user_flash_io0 = mprj_io[26]; |
| //tri user_flash_io1 = mprj_io[27]; |
| //tri user_flash_io2 = mprj_io[28]; |
| //tri user_flash_io3 = mprj_io[29]; |
| |
| |
| // Quard flash |
| s25fl256s #(.mem_file_name("user_uart.hex"), |
| .otp_file_name("none"), |
| .TimingModel("S25FL512SAGMFI010_F_30pF")) |
| u_spi_flash_256mb ( |
| // Data Inputs/Outputs |
| .SI (mprj_io[33]), |
| .SO (mprj_io[34]), |
| // Controls |
| .SCK (user_flash_clk), |
| .CSNeg (user_flash_csb), |
| .WPNeg (mprj_io[35]), |
| .HOLDNeg (mprj_io[36]), |
| .RSTNeg (RSTB) |
| |
| ); |
| |
| //--------------------------- |
| // UART Agent integration |
| // -------------------------- |
| wire uart_txd,uart_rxd; |
| |
| assign uart_txd = mprj_io[7]; |
| assign mprj_io[6] = uart_rxd ; |
| |
| uart_agent tb_uart( |
| .mclk (clock ), |
| .txd (uart_rxd ), |
| .rxd (uart_txd ) |
| ); |
| |
| |
| `ifndef GL // Drive Power for Hold Fix Buf |
| // All standard cell need power hook-up for functionality work |
| initial begin |
| end |
| `endif |
| `include "caravel_task.sv" |
| endmodule |
| // SSFLASH has 1ps/1ps time scale |
| `include "s25fl256s.sv" |
| `default_nettype wire |