| Line 1... |
Line 1... |
|
/*===========================================================================*/
|
|
/* Copyright (C) 2001 Authors */
|
|
/* */
|
|
/* 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, write to the Free Software Foundation, */
|
|
/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
|
|
/* */
|
|
/*===========================================================================*/
|
|
/* SERIAL DEBUG INTERFACE */
|
|
/*---------------------------------------------------------------------------*/
|
|
/* Test the serial debug interface: */
|
|
/* - Interrupts when going out of halt mode. */
|
|
/* */
|
|
/* Author(s): */
|
|
/* - Olivier Girard, olgirard@gmail.com */
|
|
/* */
|
|
/*---------------------------------------------------------------------------*/
|
|
/* $Rev: 19 $ */
|
|
/* $LastChangedBy: olivier.girard $ */
|
|
/* $LastChangedDate: 2009-08-04 23:47:15 +0200 (Tue, 04 Aug 2009) $ */
|
|
/*===========================================================================*/
|
|
|
|
reg [15:0] r13_bkup;
|
|
|
|
initial
|
|
begin
|
|
$display(" ===============================================");
|
|
$display("| START SIMULATION |");
|
|
$display(" ===============================================");
|
|
`ifdef DBG_EN
|
|
`ifdef DBG_UART
|
|
#1 dbg_en = 1;
|
|
repeat(30) @(posedge mclk);
|
|
stimulus_done = 0;
|
|
|
|
// Initialize the debug interface and send the CPU in halt mode
|
|
dbg_uart_tx(DBG_SYNC);
|
|
|
|
`ifdef DBG_RST_BRK_EN
|
|
dbg_uart_wr(CPU_CTL, 16'h0002); // RUN
|
|
`endif
|
|
|
|
// Wait until software initialization is done
|
|
if (r15!==(`PER_SIZE+16'h0000))
|
|
@(r15==(`PER_SIZE+16'h0000));
|
|
|
|
|
|
dbg_uart_wr(CPU_CTL, 16'h0001); // HALT
|
|
repeat(150) @(posedge mclk);
|
|
r13_bkup = r13;
|
|
|
|
// Generate a GPIO interrupt
|
|
p1_din[0] = 1'b1;
|
|
repeat(150) @(posedge mclk);
|
|
|
|
// Re-start the CPU
|
|
dbg_uart_wr(CPU_CTL, 16'h0002); // RUN
|
|
repeat(150) @(posedge mclk);
|
|
|
|
// Make sure the interrupt was serviced
|
|
if (r14 !== 16'haaaa) tb_error("====== Interrupt was not properly serviced =====");
|
|
|
|
// Make sure the program resumed execution when coming back from IRQ
|
|
if (r13 === r13_bkup) tb_error("====== Program didn't properly resumed execution =====");
|
|
|
|
|
|
p1_din[1] = 1'b1;
|
|
stimulus_done = 1;
|
|
`else
|
|
|
|
$display(" ===============================================");
|
|
$display("| SIMULATION SKIPPED |");
|
|
$display("| (serial debug interface UART not included) |");
|
|
$display(" ===============================================");
|
|
$finish;
|
|
`endif
|
|
`else
|
|
|
|
$display(" ===============================================");
|
|
$display("| SIMULATION SKIPPED |");
|
|
$display("| (serial debug interface not included) |");
|
|
$display(" ===============================================");
|
|
$finish;
|
|
`endif
|
|
end
|
|
|
|
|
No newline at end of file
|
No newline at end of file
|
