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olivier.gi |
/*===========================================================================*/
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/* Copyright (C) 2001 Authors */
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/* */
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/* This source file may be used and distributed without restriction provided */
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/* that this copyright statement is not removed from the file and that any */
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/* derivative work contains the original copyright notice and the associated */
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/* disclaimer. */
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/* */
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/* This source file is free software; you can redistribute it and/or modify */
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/* it under the terms of the GNU Lesser General Public License as published */
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/* by the Free Software Foundation; either version 2.1 of the License, or */
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/* (at your option) any later version. */
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/* */
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/* This source is distributed in the hope that it will be useful, but WITHOUT*/
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
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/* License for more details. */
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/* */
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/* You should have received a copy of the GNU Lesser General Public License */
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/* along with this source; if not, write to the Free Software Foundation, */
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/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
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/* */
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/*===========================================================================*/
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/* SERIAL DEBUG INTERFACE */
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/*---------------------------------------------------------------------------*/
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/* Test the serial debug interface: */
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/* - Interrupts when going out of halt mode. */
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/* */
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/* Author(s): */
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/* - Olivier Girard, olgirard@gmail.com */
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/* */
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/*---------------------------------------------------------------------------*/
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/* $Rev: 19 $ */
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/* $LastChangedBy: olivier.girard $ */
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/* $LastChangedDate: 2009-08-04 23:47:15 +0200 (Tue, 04 Aug 2009) $ */
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/*===========================================================================*/
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reg [15:0] r13_bkup;
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initial
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begin
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$display(" ===============================================");
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$display("| START SIMULATION |");
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$display(" ===============================================");
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olivier.gi |
`ifdef DBG_EN
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olivier.gi |
`ifdef DBG_UART
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olivier.gi |
#1 dbg_en = 1;
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repeat(30) @(posedge mclk);
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olivier.gi |
stimulus_done = 0;
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olivier.gi |
// Initialize the debug interface and send the CPU in halt mode
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dbg_uart_tx(DBG_SYNC);
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`ifdef DBG_RST_BRK_EN
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dbg_uart_wr(CPU_CTL, 16'h0002); // RUN
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`endif
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olivier.gi |
// Wait until software initialization is done
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olivier.gi |
if (r15!==(`PER_SIZE+16'h0000))
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@(r15==(`PER_SIZE+16'h0000));
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olivier.gi |
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olivier.gi |
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dbg_uart_wr(CPU_CTL, 16'h0001); // HALT
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repeat(150) @(posedge mclk);
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r13_bkup = r13;
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olivier.gi |
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olivier.gi |
// Generate a GPIO interrupt
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p1_din[0] = 1'b1;
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repeat(150) @(posedge mclk);
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// Re-start the CPU
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dbg_uart_wr(CPU_CTL, 16'h0002); // RUN
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repeat(150) @(posedge mclk);
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// Make sure the interrupt was serviced
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if (r14 !== 16'haaaa) tb_error("====== Interrupt was not properly serviced =====");
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// Make sure the program resumed execution when coming back from IRQ
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if (r13 === r13_bkup) tb_error("====== Program didn't properly resumed execution =====");
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p1_din[1] = 1'b1;
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stimulus_done = 1;
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olivier.gi |
`else
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tb_skip_finish("| (serial debug interface UART not included) |");
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`endif
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`else
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tb_skip_finish("| (serial debug interface not included) |");
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olivier.gi |
`endif
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olivier.gi |
end
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