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////////////////////////////////////////////////////////////////////////////
// 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 YIFive cores project ////
//// https://github.com/dineshannayya/yifive_r0.git ////
//// http://www.opencores.org/cores/yifive/ ////
//// ////
//// Description ////
//// 1. User Risc core is booted using compiled code of ////
//// user_risc_boot.hex ////
//// 2. User Risc core uses Serial Flash and SDRAM to boot ////
//// 3. After successful boot, Risc core will write signature////
//// in to user register from 0x3000_0018 to 0x3000_002C ////
//// 4. Through the External Wishbone Interface we read back ////
//// and validate the user register to declared pass fail ////
//// ////
//// 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"
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 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
`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.uut);
$dumpvars(1,risc_boot_tb.uut.mprj);
$dumpvars(0,risc_boot_tb.uut.mprj.u_wb_host);
$dumpvars(1,risc_boot_tb.uut.mprj.u_riscv_top);
//$dumpvars(0,risc_boot_tb.tb_uart);
//$dumpvars(0,risc_boot_tb.u_user_spiflash);
$display("Waveform Dump started");
end
`endif
initial begin
// 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, Test Risc Boot (GL) Failed");
`else
$display ("Monitor: Timeout, Test Risc Boot (RTL) Failed");
`endif
$display ("##########################################################");
$display("%c[0m",27);
$finish;
end
initial
begin
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(checkbits == 16'h AB60);
$display("Monitor: Test User Risc Boot Started");
// Wait for user risc core to boot up
repeat (50000) @(posedge clock);
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);
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: Standalone User Risc Boot Test (GL) Passed");
`else
$display("Monitor: Standalone User Risc Boot Test (RTL) Passed");
`endif
end else begin
`ifdef GL
$display("Monitor: Standalone User Risc Boot Test (GL) Failed");
`else
$display("Monitor: Standalone User Risc Boot Test (RTL) Failed");
`endif
end
$display("###################################################");
#100
$finish;
end
initial begin
RSTB <= 1'b0;
CSB <= 1'b1; // Force CSB high
#2000;
RSTB <= 1'b1; // Release reset
#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 uut (
.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[24];
wire user_flash_csb = mprj_io[25];
//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[29]),
.SO (mprj_io[30]),
// Controls
.SCK (user_flash_clk),
.CSNeg (user_flash_csb),
.WPNeg (mprj_io[31]),
.HOLDNeg (mprj_io[32]),
.RSTNeg (RSTB)
);
//---------------------------
// UART Agent integration
// --------------------------
wire uart_txd,uart_rxd;
assign uart_txd = mprj_io[2];
assign mprj_io[1] = 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
endmodule
// SSFLASH has 1ps/1ps time scale
`include "s25fl256s.sv"
`default_nettype wire