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[/] [or1200_hp/] [trunk/] [rtl/] [rtl_cm4/] [verilog/] [or1200_top_cm4_top.v] - Blame information for rev 3

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//////////////////////////////////////////////////////////////////////
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////                                                              ////
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////  OR1200 Top Level                                            ////
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////                                                              ////
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////  This file is part of the OpenRISC 1200 project              ////
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////  http://www.opencores.org/cores/or1k/                        ////
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////                                                              ////
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////  Description                                                 ////
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////  OR1200 Top Level                                            ////
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////                                                              ////
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////  To Do:                                                      ////
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////   - make it smaller and faster                               ////
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////                                                              ////
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////  Author(s):                                                  ////
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////      - Damjan Lampret, lampret@opencores.org                 ////
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////                                                              ////
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//////////////////////////////////////////////////////////////////////
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////                                                              ////
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//// Copyright (C) 2000 Authors and OPENCORES.ORG                 ////
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////                                                              ////
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//// This source file may be used and distributed without         ////
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//// restriction provided that this copyright statement is not    ////
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//// removed from the file and that any derivative work contains  ////
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//// the original copyright notice and the associated disclaimer. ////
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////                                                              ////
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//// This source file is free software; you can redistribute it   ////
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//// and/or modify it under the terms of the GNU Lesser General   ////
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//// Public License as published by the Free Software Foundation; ////
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//// either version 2.1 of the License, or (at your option) any   ////
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//// later version.                                               ////
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////                                                              ////
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//// This source is distributed in the hope that it will be       ////
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//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
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//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
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//// PURPOSE.  See the GNU Lesser General Public License for more ////
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//// details.                                                     ////
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////                                                              ////
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//// You should have received a copy of the GNU Lesser General    ////
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//// Public License along with this source; if not, download it   ////
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//// from http://www.opencores.org/lgpl.shtml                     ////
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////                                                              ////
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//////////////////////////////////////////////////////////////////////
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//
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// CVS Revision History
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//
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// $Log: or1200_top.v,v $
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// Revision 1.13  2004/06/08 18:17:36  lampret
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// Non-functional changes. Coding style fixes.
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//
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// Revision 1.12  2004/04/05 08:29:57  lampret
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// Merged branch_qmem into main tree.
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//
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// Revision 1.10.4.9  2004/02/11 01:40:11  lampret
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// preliminary HW breakpoints support in debug unit (by default disabled). To enable define OR1200_DU_HWBKPTS.
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//
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// Revision 1.10.4.8  2004/01/17 21:14:14  simons
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// Errors fixed.
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//
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// Revision 1.10.4.7  2004/01/17 19:06:38  simons
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// Error fixed.
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//
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// Revision 1.10.4.6  2004/01/17 18:39:48  simons
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// Error fixed.
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//
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// Revision 1.10.4.5  2004/01/15 06:46:38  markom
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// interface to debug changed; no more opselect; stb-ack protocol
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//
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// Revision 1.10.4.4  2003/12/09 11:46:49  simons
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// Mbist nameing changed, Artisan ram instance signal names fixed, some synthesis waning fixed.
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//
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// Revision 1.10.4.3  2003/12/05 00:08:44  lampret
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// Fixed instantiation name.
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//
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// Revision 1.10.4.2  2003/07/11 01:10:35  lampret
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// Added three missing wire declarations. No functional changes.
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//
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// Revision 1.10.4.1  2003/07/08 15:36:37  lampret
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// Added embedded memory QMEM.
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//
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// Revision 1.10  2002/12/08 08:57:56  lampret
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// Added optional support for WB B3 specification (xwb_cti_o, xwb_bte_o). Made xwb_cab_o optional.
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//
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// Revision 1.9  2002/10/17 20:04:41  lampret
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// Added BIST scan. Special VS RAMs need to be used to implement BIST.
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//
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// Revision 1.8  2002/08/18 19:54:22  lampret
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// Added store buffer.
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//
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// Revision 1.7  2002/07/14 22:17:17  lampret
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// Added simple trace buffer [only for Xilinx Virtex target]. Fixed instruction fetch abort when new exception is recognized.
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//
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// Revision 1.6  2002/03/29 15:16:56  lampret
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// Some of the warnings fixed.
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//
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// Revision 1.5  2002/02/11 04:33:17  lampret
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// Speed optimizations (removed duplicate _cyc_ and _stb_). Fixed D/IMMU cache-inhibit attr.
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//
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// Revision 1.4  2002/02/01 19:56:55  lampret
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// Fixed combinational loops.
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//
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// Revision 1.3  2002/01/28 01:16:00  lampret
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// Changed 'void' nop-ops instead of insn[0] to use insn[16]. Debug unit stalls the tick timer. Prepared new flag generation for add and and insns. Blocked DC/IC while they are turned off. Fixed I/D MMU SPRs layout except WAYs. TODO: smart IC invalidate, l.j 2 and TLB ways.
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//
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// Revision 1.2  2002/01/18 07:56:00  lampret
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// No more low/high priority interrupts (PICPR removed). Added tick timer exception. Added exception prefix (SR[EPH]). Fixed single-step bug whenreading NPC.
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//
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// Revision 1.1  2002/01/03 08:16:15  lampret
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// New prefixes for RTL files, prefixed module names. Updated cache controllers and MMUs.
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//
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// Revision 1.13  2001/11/23 08:38:51  lampret
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// Changed DSR/DRR behavior and exception detection.
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//
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// Revision 1.12  2001/11/20 00:57:22  lampret
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// Fixed width of du_except.
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//
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// Revision 1.11  2001/11/18 08:36:28  lampret
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// For GDB changed single stepping and disabled trap exception.
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//
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// Revision 1.10  2001/10/21 17:57:16  lampret
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// Removed params from generic_XX.v. Added translate_off/on in sprs.v and id.v. Removed spr_addr from dc.v and ic.v. Fixed CR+LF.
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//
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// Revision 1.9  2001/10/14 13:12:10  lampret
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// MP3 version.
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//
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// Revision 1.1.1.1  2001/10/06 10:18:35  igorm
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// no message
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//
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// Revision 1.4  2001/08/13 03:36:20  lampret
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// Added cfg regs. Moved all defines into one defines.v file. More cleanup.
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//
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// Revision 1.3  2001/08/09 13:39:33  lampret
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// Major clean-up.
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//
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// Revision 1.2  2001/07/22 03:31:54  lampret
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// Fixed RAM's oen bug. Cache bypass under development.
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//
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// Revision 1.1  2001/07/20 00:46:21  lampret
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// Development version of RTL. Libraries are missing.
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//
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//
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// synopsys translate_off
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`include "timescale.v"
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// synopsys translate_on
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`include "or1200_defines.v"
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147
module or1200_top_cm4_top(
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        cmls,
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        // System
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        clk_i, rst_i, pic_ints_i, clmode_i,
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152
        // Instruction WISHBONE INTERFACE
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        //iwb_clk_i, iwb_rst_i, 
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        iwb_ack_i, iwb_err_i, iwb_rty_i, iwb_dat_i,
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        iwb_cyc_o, iwb_adr_o, iwb_stb_o, iwb_we_o, iwb_sel_o, iwb_dat_o,
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`ifdef OR1200_WB_CAB
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        iwb_cab_o,
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`endif
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`ifdef OR1200_WB_B3
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        iwb_cti_o, iwb_bte_o,
161
`endif
162
        // Data WISHBONE INTERFACE
163
        //dwb_clk_i, dwb_rst_i, 
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        dwb_ack_i, dwb_err_i, dwb_rty_i, dwb_dat_i,
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        dwb_cyc_o, dwb_adr_o, dwb_stb_o, dwb_we_o, dwb_sel_o, dwb_dat_o,
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`ifdef OR1200_WB_CAB
167
        dwb_cab_o,
168
`endif
169
`ifdef OR1200_WB_B3
170
        dwb_cti_o, dwb_bte_o,
171
`endif
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173
        // External Debug Interface
174
        dbg_stall_i, dbg_ewt_i, dbg_lss_o, dbg_is_o, dbg_wp_o, dbg_bp_o,
175
        dbg_stb_i, dbg_we_i, dbg_adr_i, dbg_dat_i, dbg_dat_o, dbg_ack_o,
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177
`ifdef OR1200_BIST
178
        // RAM BIST
179
        mbist_si_i, mbist_so_o, mbist_ctrl_i,
180
`endif
181
        // Power Management
182
        pm_cpustall_i,
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        pm_clksd_o, pm_dc_gate_o, pm_ic_gate_o, pm_dmmu_gate_o,
184
        pm_immu_gate_o, pm_tt_gate_o, pm_cpu_gate_o, pm_wakeup_o, pm_lvolt_o
185
 
186
);
187
 
188
input [1:0] cmls;
189
 
190
 
191
parameter dw = `OR1200_OPERAND_WIDTH;
192
parameter aw = `OR1200_OPERAND_WIDTH;
193
parameter ppic_ints = `OR1200_PIC_INTS;
194
 
195
//
196
// I/O
197
//
198
 
199
//
200
// System
201
//
202
input                   clk_i;
203
input                   rst_i;
204
input   [1:0]            clmode_i;       // 00 WB=RISC, 01 WB=RISC/2, 10 N/A, 11 WB=RISC/4
205
input   [ppic_ints-1:0]  pic_ints_i;
206
 
207
//
208
// Instruction WISHBONE interface
209
//
210
//input                 iwb_clk_i;      // clock input
211
//input                 iwb_rst_i;      // reset input
212
wire iwb_clk_i = clk_i;
213
wire iwb_rst_i = rst_i;
214
 
215
input                   iwb_ack_i;      // normal termination
216
input                   iwb_err_i;      // termination w/ error
217
input                   iwb_rty_i;      // termination w/ retry
218
input   [dw-1:0] iwb_dat_i;      // input data bus
219
output                  iwb_cyc_o;      // cycle valid output
220
output  [aw-1:0] iwb_adr_o;      // address bus outputs
221
output                  iwb_stb_o;      // strobe output
222
output                  iwb_we_o;       // indicates write transfer
223
output  [3:0]            iwb_sel_o;      // byte select outputs
224
output  [dw-1:0] iwb_dat_o;      // output data bus
225
`ifdef OR1200_WB_CAB
226
output                  iwb_cab_o;      // indicates consecutive address burst
227
`endif
228
`ifdef OR1200_WB_B3
229
output  [2:0]            iwb_cti_o;      // cycle type identifier
230
output  [1:0]            iwb_bte_o;      // burst type extension
231
`endif
232
 
233
//
234
// Data WISHBONE interface
235
//
236
//input                 dwb_clk_i;      // clock input
237
//input                 dwb_rst_i;      // reset input
238
wire dwb_clk_i = clk_i;
239
wire dwb_rst_i = rst_i;
240
 
241
input                   dwb_ack_i;      // normal termination
242
input                   dwb_err_i;      // termination w/ error
243
input                   dwb_rty_i;      // termination w/ retry
244
input   [dw-1:0] dwb_dat_i;      // input data bus
245
output                  dwb_cyc_o;      // cycle valid output
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output  [aw-1:0] dwb_adr_o;      // address bus outputs
247
output                  dwb_stb_o;      // strobe output
248
output                  dwb_we_o;       // indicates write transfer
249
output  [3:0]            dwb_sel_o;      // byte select outputs
250
output  [dw-1:0] dwb_dat_o;      // output data bus
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`ifdef OR1200_WB_CAB
252
output                  dwb_cab_o;      // indicates consecutive address burst
253
`endif
254
`ifdef OR1200_WB_B3
255
output  [2:0]            dwb_cti_o;      // cycle type identifier
256
output  [1:0]            dwb_bte_o;      // burst type extension
257
`endif
258
 
259
//
260
// External Debug Interface
261
//
262
input                   dbg_stall_i;    // External Stall Input
263
input                   dbg_ewt_i;      // External Watchpoint Trigger Input
264
output  [3:0]            dbg_lss_o;      // External Load/Store Unit Status
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output  [1:0]            dbg_is_o;       // External Insn Fetch Status
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output  [10:0]           dbg_wp_o;       // Watchpoints Outputs
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output                  dbg_bp_o;       // Breakpoint Output
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input                   dbg_stb_i;      // External Address/Data Strobe
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input                   dbg_we_i;       // External Write Enable
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input   [aw-1:0] dbg_adr_i;      // External Address Input
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input   [dw-1:0] dbg_dat_i;      // External Data Input
272
output  [dw-1:0] dbg_dat_o;      // External Data Output
273
output                  dbg_ack_o;      // External Data Acknowledge (not WB compatible)
274
 
275
`ifdef OR1200_BIST
276
//
277
// RAM BIST
278
//
279
input mbist_si_i;
280
input [`OR1200_MBIST_CTRL_WIDTH - 1:0] mbist_ctrl_i;
281
output mbist_so_o;
282
`endif
283
 
284
//
285
// Power Management
286
//
287
input                   pm_cpustall_i;
288
output  [3:0]            pm_clksd_o;
289
output                  pm_dc_gate_o;
290
output                  pm_ic_gate_o;
291
output                  pm_dmmu_gate_o;
292
output                  pm_immu_gate_o;
293
output                  pm_tt_gate_o;
294
output                  pm_cpu_gate_o;
295
output                  pm_wakeup_o;
296
output                  pm_lvolt_o;
297
 
298
or1200_top_cm4 or1200_top_cm4i(
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                .clk_i_cml_1(clk_i),
300
                .clk_i_cml_2(clk_i),
301
                .clk_i_cml_3(clk_i),
302
                .cmls(cmls),
303
                .clk_i(clk_i),
304
                .rst_i(rst_i),
305
                .pic_ints_i(pic_ints_i),
306
                .clmode_i(clmode_i),
307
                .iwb_ack_i(iwb_ack_i),
308
                .iwb_err_i(iwb_err_i),
309
                .iwb_rty_i(iwb_rty_i),
310
                .iwb_dat_i(iwb_dat_i),
311
                .iwb_cyc_o(iwb_cyc_o),
312
                .iwb_adr_o(iwb_adr_o),
313
                .iwb_stb_o(iwb_stb_o),
314
                .iwb_we_o(iwb_we_o),
315
                .iwb_sel_o(iwb_sel_o),
316
                .iwb_dat_o(iwb_dat_o),
317
`ifdef OR1200_WB_CAB
318
                .iwb_cab_o(iwb_cab_o),
319
`endif
320
`ifdef OR1200_WB_B3
321
                .iwb_cti_o(iwb_cti_o),
322
                .iwb_bte_o(iwb_bte_o),
323
`endif
324
                .dwb_ack_i(dwb_ack_i),
325
                .dwb_err_i(dwb_err_i),
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                .dwb_rty_i(dwb_rty_i),
327
                .dwb_dat_i(dwb_dat_i),
328
                .dwb_cyc_o(dwb_cyc_o),
329
                .dwb_adr_o(dwb_adr_o),
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                .dwb_stb_o(dwb_stb_o),
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                .dwb_we_o(dwb_we_o),
332
                .dwb_sel_o(dwb_sel_o),
333
                .dwb_dat_o(dwb_dat_o),
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`ifdef OR1200_WB_CAB
335
                .dwb_cab_o(dwb_cab_o),
336
`endif
337
`ifdef OR1200_WB_B3
338
                .dwb_cti_o(dwb_cti_o),
339
                .dwb_bte_o(dwb_bte_o),
340
`endif
341
 
342
                .dbg_stall_i(dbg_stall_i),
343
                .dbg_ewt_i(dbg_ewt_i),
344
                .dbg_lss_o(dbg_lss_o),
345
                .dbg_is_o(dbg_is_o),
346
                .dbg_wp_o(dbg_wp_o),
347
                .dbg_bp_o(dbg_bp_o),
348
                .dbg_stb_i(dbg_stb_i),
349
                .dbg_we_i(dbg_we_i),
350
                .dbg_adr_i(dbg_adr_i),
351
                .dbg_dat_i(dbg_dat_i),
352
                .dbg_dat_o(dbg_dat_o),
353
                .dbg_ack_o(dbg_ack_o),
354
 
355
`ifdef OR1200_BIST
356
        // RAM BIST
357
                .mbist_si_i(mbist_si_i),
358
                .mbist_so_o(mbist_so_o),
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                .mbist_ctrl_i(mbist_ctrl_i),
360
`endif
361
 
362
                .pm_cpustall_i(pm_cpustall_i),
363
                .pm_clksd_o(pm_clksd_o),
364
                .pm_dc_gate_o(pm_dc_gate_o),
365
                .pm_ic_gate_o(pm_ic_gate_o),
366
                .pm_dmmu_gate_o(pm_dmmu_gate_o),
367
                .pm_immu_gate_o(pm_immu_gate_o),
368
                .pm_tt_gate_o(pm_tt_gate_o),
369
                .pm_cpu_gate_o(pm_cpu_gate_o),
370
                .pm_wakeup_o(pm_wakeup_o),
371
                .pm_lvolt_o(pm_lvolt_o));
372
 
373
 
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endmodule

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