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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. ////
//// 1. User Risc core is booted using compiled code of ////
//// user_risc_boot.c ////
//// 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 0x1003_0058 to 0x1003_006C ////
//// 4. Through the External Wishbone Interface we read back ////
//// from 0x3003_0058 to 0x3003_006C ////
//// and validate the user register to declared pass fail ////
//// ////
//// 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"
`define TB_HEX "user_risc_boot.hex"
`define TB_TOP user_risc_boot_tb
module `TB_TOP;
parameter real CLK1_PERIOD = 20; // %0Mhz
parameter real CLK2_PERIOD = 2.5;
parameter real IPLL_PERIOD = 5.008;
parameter real XTAL_PERIOD = 6;
`include "user_tasks.sv"
`ifdef WFDUMP
initial begin
$dumpfile("simx.vcd");
$dumpvars(3, `TB_TOP);
end
`endif
initial begin
$value$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 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 begin
$display("STATUS: Working with Risc core 1");
wb_user_core_write(`ADDR_SPACE_GLBL+`GLBL_CFG_CFG0,'h21F);
end
wait_riscv_boot();
$display("Monitor: Reading Back the expected value");
// User RISC core expect to write these value in global
// register, read back and decide on pass fail
// 0x30000018 = 0x11223344;
// 0x3000001C = 0x22334455;
// 0x30000020 = 0x33445566;
// 0x30000024 = 0x44556677;
// 0x30000028 = 0x55667788;
// 0x3000002C = 0x66778899;
test_fail = 0;
wb_user_core_read_check(`ADDR_SPACE_GLBL+`GLBL_CFG_SOFT_REG_0,read_data,32'h11223344);
wb_user_core_read_check(`ADDR_SPACE_GLBL+`GLBL_CFG_SOFT_REG_1,read_data,32'h22334455);
wb_user_core_read_check(`ADDR_SPACE_GLBL+`GLBL_CFG_SOFT_REG_2,read_data,32'h33445566);
wb_user_core_read_check(`ADDR_SPACE_GLBL+`GLBL_CFG_SOFT_REG_3,read_data,32'h44556677);
wb_user_core_read_check(`ADDR_SPACE_GLBL+`GLBL_CFG_SOFT_REG_4,read_data,32'h55667788);
wb_user_core_read_check(`ADDR_SPACE_GLBL+`GLBL_CFG_SOFT_REG_5,read_data,32'h66778899);
$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; // CLOCK
//------------------------------------------------------
// 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_29 = io_oeb[33];
wire #1 io_oeb_30 = io_oeb[34];
wire #1 io_oeb_31 = io_oeb[35];
wire #1 io_oeb_32 = io_oeb[36];
tri #1 flash_io0 = (io_oeb_29== 1'b0) ? io_out[33] : 1'bz;
tri #1 flash_io1 = (io_oeb_30== 1'b0) ? io_out[34] : 1'bz;
tri #1 flash_io2 = (io_oeb_31== 1'b0) ? io_out[35] : 1'bz;
tri #1 flash_io3 = (io_oeb_32== 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)
);
endmodule
`include "s25fl256s.sv"
`default_nettype wire