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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>
//////////////////////////////////////////////////////////////////////
//// ////
//// Standalone User validation Test bench ////
//// ////
//// This file is part of the YIFive cores project ////
//// https://github.com/dineshannayya/yifive_r0.git ////
//// http://www.opencores.org/cores/yifive/ ////
//// ////
//// Description ////
//// This is a standalone test bench to validate the ////
//// Digital core. ////
//// ////
//// To Do: ////
//// nothing ////
//// ////
//// Author(s): ////
//// - Dinesh Annayya, dinesha@opencores.org ////
//// ////
//// Revision : ////
//// 0.1 - 16th Feb 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 wire
`timescale 1 ns / 1 ns
`include "sram_macros/sky130_sram_2kbyte_1rw1r_32x512_8.v"
`include "uart_agent.v"
`include "is62wvs1288.v"
`define TB_HEX "arduino_switchCase2.hex"
`define TB_TOP arduino_switchCase2_tb
module `TB_TOP;
parameter real CLK1_PERIOD = 20; // 50Mhz
parameter real CLK2_PERIOD = 2.5;
parameter real IPLL_PERIOD = 5.008;
parameter real XTAL_PERIOD = 6;
`include "user_tasks.sv"
//----------------------------------
// 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 flag ;
reg [31:0] check_sum ;
integer i,j;
parameter P_FSM_C = 4'b0000; // Command Phase Only
parameter P_FSM_CW = 4'b0001; // Command + Write DATA Phase Only
parameter P_FSM_CA = 4'b0010; // Command -> Address Phase Only
parameter P_FSM_CAR = 4'b0011; // Command -> Address -> Read Data
parameter P_FSM_CADR = 4'b0100; // Command -> Address -> Dummy -> Read Data
parameter P_FSM_CAMR = 4'b0101; // Command -> Address -> Mode -> Read Data
parameter P_FSM_CAMDR = 4'b0110; // Command -> Address -> Mode -> Dummy -> Read Data
parameter P_FSM_CAW = 4'b0111; // Command -> Address ->Write Data
parameter P_FSM_CADW = 4'b1000; // Command -> Address -> DUMMY + Write Data
parameter P_FSM_CAMW = 4'b1001; // Command -> Address -> MODE + Write Data
parameter P_FSM_CDR = 4'b1010; // COMMAND -> DUMMY -> READ
parameter P_FSM_CDW = 4'b1011; // COMMAND -> DUMMY -> WRITE
parameter P_FSM_CR = 4'b1100; // COMMAND -> READ
parameter P_MODE_SWITCH_IDLE = 2'b00;
parameter P_MODE_SWITCH_AT_ADDR = 2'b01;
parameter P_MODE_SWITCH_AT_DATA = 2'b10;
parameter P_SINGLE = 2'b00;
parameter P_DOUBLE = 2'b01;
parameter P_QUAD = 2'b10;
parameter P_QDDR = 2'b11;
initial begin
flag = 0;
end
`ifdef WFDUMP
initial begin
$dumpfile("simx.vcd");
$dumpvars(3, `TB_TOP);
$dumpvars(0, `TB_TOP.u_top.u_riscv_top.i_core_top_0);
$dumpvars(0, `TB_TOP.u_top.u_riscv_top.u_connect);
$dumpvars(0, `TB_TOP.u_top.u_riscv_top.u_intf);
$dumpvars(0, `TB_TOP.u_top.u_uart_i2c_usb_spi.u_uart0_core);
end
`endif
/*************************************************************************
* This is Baud Rate to clock divider conversion for Test Bench
* Note: DUT uses 16x baud clock, where are test bench uses directly
* baud clock, Due to 16x Baud clock requirement at RTL, there will be
* some resolution loss, we expect at lower baud rate this resolution
* loss will be less. For Quick simulation perpose higher baud rate used
* *************************************************************************/
task tb_set_uart_baud;
input [31:0] ref_clk;
input [31:0] baud_rate;
output [31:0] baud_div;
reg [31:0] baud_div;
begin
// for 230400 Baud = (50Mhz/230400) = 216.7
baud_div = ref_clk/baud_rate; // Get the Bit Baud rate
// Baud 16x = 216/16 = 13
baud_div = baud_div/16; // To find the RTL baud 16x div value to find similar resolution loss in test bench
// Test bench baud clock , 16x of above value
// 13 * 16 = 208,
// (Note if you see original value was 216, now it's 208 )
baud_div = baud_div * 16;
// Test bench half cycle counter to toggle it
// 208/2 = 104
baud_div = baud_div/2;
//As counter run's from 0 , substract from 1
baud_div = baud_div-1;
end
endtask
/************* Port-D Mapping **********************************
* Arduino-No
* Pin-2 0 PD0/RXD[0] digital_io[6]
* Pin-3 1 PD1/TXD[0] digital_io[7]
* Pin-4 2 PD2/RXD[1]/INT0 digital_io[8]
* Pin-5 3 PD3/INT1/OC2B(PWM0) digital_io[9]
* Pin-6 4 PD4/TXD[1] digital_io[10]
* Pin-11 5 PD5/SS[3]/OC0B(PWM1)/T1 digital_io[13]
* Pin-12 6 PD6/SS[2]/OC0A(PWM2)/AIN0 digital_io[14]/analog_io[2]
* Pin-13 7 PD7/A1N1 digital_io[15]/analog_io[3]
* ********************************************************/
wire [7:0] port_d_in = { io_out[15],
io_out[14],
io_out[13],
io_out[10],
io_out[9],
io_out[8],
io_out[7],
io_out[6]
};
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
tb_set_uart_baud(50000000,1152000,uart_divisor);// 50Mhz Ref clock, Baud Rate: 230400
uart_timeout = 2000;// wait time limit
uart_fifo_enable = 0; // fifo mode disable
$value$plusargs("risc_core_id=%d", d_risc_id);
init();
#200; // Wait for reset removal
repeat (10) @(posedge clock);
$display("Monitor: Standalone User Risc Boot Test Started");
// Remove Wb Reset
//wb_user_core_write(`ADDR_SPACE_WBHOST+`WBHOST_GLBL_CFG,'h1);
repeat (2) @(posedge clock);
#1;
// Remove WB and SPI Reset, Keep SDARM and CORE under Reset
//wb_user_core_write(`ADDR_SPACE_GLBL+`GLBL_CFG_CFG0,'h01F);
//// QSPI SRAM:CS#2 Switch to QSPI Mode
////wb_user_core_write(`ADDR_SPACE_WBHOST+`WBHOST_BANK_SEL,'h1000); // Change the Bank Sel 1000
//wb_user_core_write(`ADDR_SPACE_QSPI+`QSPIM_IMEM_CTRL1,{16'h0,1'b0,1'b0,4'b0000,P_MODE_SWITCH_IDLE,P_SINGLE,P_SINGLE,4'b0100});
//wb_user_core_write(`ADDR_SPACE_QSPI+`QSPIM_IMEM_CTRL2,{8'h0,2'b00,2'b00,P_FSM_C,8'h00,8'h38});
//wb_user_core_write(`ADDR_SPACE_QSPI+`QSPIM_IMEM_WDATA,32'h0);
// Remove all the reset
if(d_risc_id == 0) begin
$display("STATUS: Working with Risc core 0");
//wb_user_core_write(`ADDR_SPACE_GLBL+`GLBL_CFG_CFG0,'h11F);
end else if(d_risc_id == 1) begin
$display("STATUS: Working with Risc core 1");
wb_user_core_write(`ADDR_SPACE_GLBL+`GLBL_CFG_CFG0,'h21F);
end else if(d_risc_id == 2) begin
$display("STATUS: Working with Risc core 2");
wb_user_core_write(`ADDR_SPACE_GLBL+`GLBL_CFG_CFG0,'h41F);
end else if(d_risc_id == 3) begin
$display("STATUS: Working with Risc core 3");
wb_user_core_write(`ADDR_SPACE_GLBL+`GLBL_CFG_CFG0,'h81F);
end
wait_riscv_boot();
repeat (100) @(posedge clock); // wait for Processor Get Ready
tb_uart.debug_mode = 0; // disable debug display
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);
repeat (10000) @(posedge clock); // wait for Processor Get Ready
flag = 1;
check_sum = 0;
fork
begin
fork
begin
tb_uart.write_char ("a");
tb_uart.write_char ("b");
tb_uart.write_char ("c");
tb_uart.write_char ("d");
tb_uart.write_char ("e");
end
begin
wait(port_d_in[2] == 1'b1);
$display("PORT-D Pin-2 High Detected");
wait(port_d_in[3] == 1'b1);
$display("PORT-D Pin-3 High Detected");
wait(port_d_in[4] == 1'b1);
$display("PORT-D Pin-4 High Detected");
wait(port_d_in[5] == 1'b1);
$display("PORT-D Pin-5 High Detected");
wait(port_d_in[6] == 1'b1);
$display("PORT-D Pin-6 High Detected");
test_fail =0;
end
join
end
begin
repeat (3000000) @(posedge clock); // wait for Processor Get Ready
test_fail =1;
end
join_any
#100
tb_uart.report_status(uart_rx_nu, uart_tx_nu);
$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("###################################################");
$finish;
end
// SSPI Slave I/F
assign io_in[5] = 1'b1; // RESET
assign io_in[21] = 1'b0 ; // SPIS SCK
//------------------------------------------------------
// Integrate the Serial flash with qurd support to
// user core using the gpio pads
// ----------------------------------------------------
wire flash_clk = io_out[28];
wire flash_csb = io_out[29];
// Creating Pad Delay
wire #1 io_oeb_33 = io_oeb[33];
wire #1 io_oeb_34 = io_oeb[34];
wire #1 io_oeb_35 = io_oeb[35];
wire #1 io_oeb_36 = io_oeb[36];
tri #1 flash_io0 = (io_oeb_33== 1'b0) ? io_out[33] : 1'bz;
tri #1 flash_io1 = (io_oeb_34== 1'b0) ? io_out[34] : 1'bz;
tri #1 flash_io2 = (io_oeb_35== 1'b0) ? io_out[35] : 1'bz;
tri #1 flash_io3 = (io_oeb_36== 1'b0) ? io_out[36] : 1'bz;
assign io_in[33] = flash_io0;
assign io_in[34] = flash_io1;
assign io_in[35] = flash_io2;
assign io_in[36] = flash_io3;
// Quard flash
s25fl256s #(.mem_file_name(`TB_HEX),
.otp_file_name("none"),
.TimingModel("S25FL512SAGMFI010_F_30pF"))
u_spi_flash_256mb (
// Data Inputs/Outputs
.SI (flash_io0),
.SO (flash_io1),
// Controls
.SCK (flash_clk),
.CSNeg (flash_csb),
.WPNeg (flash_io2),
.HOLDNeg (flash_io3),
.RSTNeg (!wb_rst_i)
);
wire spiram_csb = io_out[31];
is62wvs1288 #(.mem_file_name("none"))
u_sram (
// Data Inputs/Outputs
.io0 (flash_io0),
.io1 (flash_io1),
// Controls
.clk (flash_clk),
.csb (spiram_csb),
.io2 (flash_io2),
.io3 (flash_io3)
);
//---------------------------
// UART Agent integration
// --------------------------
wire uart_txd,uart_rxd;
assign uart_txd = io_out[7];
assign io_in[6] = uart_rxd ;
uart_agent tb_uart(
.mclk (clock ),
.txd (uart_rxd ),
.rxd (uart_txd )
);
endmodule
`include "s25fl256s.sv"
`default_nettype wire