OpenCores
URL https://opencores.org/ocsvn/or1200_hp/or1200_hp/trunk

Subversion Repositories or1200_hp

[/] [or1200_hp/] [trunk/] [rtl/] [rtl_orig/] [verilog/] [or1200_defines.v] - Blame information for rev 2

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 2 tobil
//////////////////////////////////////////////////////////////////////
2
////                                                              ////
3
////  OR1200's definitions                                        ////
4
////                                                              ////
5
////  This file is part of the OpenRISC 1200 project              ////
6
////  http://www.opencores.org/cores/or1k/                        ////
7
////                                                              ////
8
////  Description                                                 ////
9
////  Parameters of the OR1200 core                               ////
10
////                                                              ////
11
////  To Do:                                                      ////
12
////   - add parameters that are missing                          ////
13
////                                                              ////
14
////  Author(s):                                                  ////
15
////      - Damjan Lampret, lampret@opencores.org                 ////
16
////                                                              ////
17
//////////////////////////////////////////////////////////////////////
18
////                                                              ////
19
//// Copyright (C) 2000 Authors and OPENCORES.ORG                 ////
20
////                                                              ////
21
//// This source file may be used and distributed without         ////
22
//// restriction provided that this copyright statement is not    ////
23
//// removed from the file and that any derivative work contains  ////
24
//// the original copyright notice and the associated disclaimer. ////
25
////                                                              ////
26
//// This source file is free software; you can redistribute it   ////
27
//// and/or modify it under the terms of the GNU Lesser General   ////
28
//// Public License as published by the Free Software Foundation; ////
29
//// either version 2.1 of the License, or (at your option) any   ////
30
//// later version.                                               ////
31
////                                                              ////
32
//// This source is distributed in the hope that it will be       ////
33
//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
34
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
35
//// PURPOSE.  See the GNU Lesser General Public License for more ////
36
//// details.                                                     ////
37
////                                                              ////
38
//// You should have received a copy of the GNU Lesser General    ////
39
//// Public License along with this source; if not, download it   ////
40
//// from http://www.opencores.org/lgpl.shtml                     ////
41
////                                                              ////
42
//////////////////////////////////////////////////////////////////////
43
//
44
// CVS Revision History
45
//
46
// $Log: not supported by cvs2svn $
47
// Revision 1.44  2005/10/19 11:37:56  jcastillo
48
// Added support for RAMB16 Xilinx4/Spartan3 primitives
49
//
50
// Revision 1.43  2005/01/07 09:23:39  andreje
51
// l.ff1 and l.cmov instructions added
52
//
53
// Revision 1.42  2004/06/08 18:17:36  lampret
54
// Non-functional changes. Coding style fixes.
55
//
56
// Revision 1.41  2004/05/09 20:03:20  lampret
57
// By default l.cust5 insns are disabled
58
//
59
// Revision 1.40  2004/05/09 19:49:04  lampret
60
// Added some l.cust5 custom instructions as example
61
//
62
// Revision 1.39  2004/04/08 11:00:46  simont
63
// Add support for 512B instruction cache.
64
//
65
// Revision 1.38  2004/04/05 08:29:57  lampret
66
// Merged branch_qmem into main tree.
67
//
68
// Revision 1.35.4.6  2004/02/11 01:40:11  lampret
69
// preliminary HW breakpoints support in debug unit (by default disabled). To enable define OR1200_DU_HWBKPTS.
70
//
71
// Revision 1.35.4.5  2004/01/15 06:46:38  markom
72
// interface to debug changed; no more opselect; stb-ack protocol
73
//
74
// Revision 1.35.4.4  2004/01/11 22:45:46  andreje
75
// Separate instruction and data QMEM decoders, QMEM acknowledge and byte-select added
76
//
77
// Revision 1.35.4.3  2003/12/17 13:43:38  simons
78
// Exception prefix configuration changed.
79
//
80
// Revision 1.35.4.2  2003/12/05 00:05:03  lampret
81
// Static exception prefix.
82
//
83
// Revision 1.35.4.1  2003/07/08 15:36:37  lampret
84
// Added embedded memory QMEM.
85
//
86
// Revision 1.35  2003/04/24 00:16:07  lampret
87
// No functional changes. Added defines to disable implementation of multiplier/MAC
88
//
89
// Revision 1.34  2003/04/20 22:23:57  lampret
90
// No functional change. Only added customization for exception vectors.
91
//
92
// Revision 1.33  2003/04/07 20:56:07  lampret
93
// Fixed OR1200_CLKDIV_x_SUPPORTED defines. Better description.
94
//
95
// Revision 1.32  2003/04/07 01:26:57  lampret
96
// RFRAM defines comments updated. Altera LPM option added.
97
//
98
// Revision 1.31  2002/12/08 08:57:56  lampret
99
// Added optional support for WB B3 specification (xwb_cti_o, xwb_bte_o). Made xwb_cab_o optional.
100
//
101
// Revision 1.30  2002/10/28 15:09:22  mohor
102
// Previous check-in was done by mistake.
103
//
104
// Revision 1.29  2002/10/28 15:03:50  mohor
105
// Signal scanb_sen renamed to scanb_en.
106
//
107
// Revision 1.28  2002/10/17 20:04:40  lampret
108
// Added BIST scan. Special VS RAMs need to be used to implement BIST.
109
//
110
// Revision 1.27  2002/09/16 03:13:23  lampret
111
// Removed obsolete comment.
112
//
113
// Revision 1.26  2002/09/08 05:52:16  lampret
114
// Added optional l.div/l.divu insns. By default they are disabled.
115
//
116
// Revision 1.25  2002/09/07 19:16:10  lampret
117
// If SR[CY] implemented with OR1200_IMPL_ADDC enabled, l.add/l.addi also set SR[CY].
118
//
119
// Revision 1.24  2002/09/07 05:42:02  lampret
120
// Added optional SR[CY]. Added define to enable additional (compare) flag modifiers. Defines are OR1200_IMPL_ADDC and OR1200_ADDITIONAL_FLAG_MODIFIERS.
121
//
122
// Revision 1.23  2002/09/04 00:50:34  lampret
123
// Now most of the configuration registers are updatded automatically based on defines in or1200_defines.v.
124
//
125
// Revision 1.22  2002/09/03 22:28:21  lampret
126
// As per Taylor Su suggestion all case blocks are full case by default and optionally (OR1200_CASE_DEFAULT) can be disabled to increase clock frequncy.
127
//
128
// Revision 1.21  2002/08/22 02:18:55  lampret
129
// Store buffer has been tested and it works. BY default it is still disabled until uClinux confirms correct operation on FPGA board.
130
//
131
// Revision 1.20  2002/08/18 21:59:45  lampret
132
// Disable SB until it is tested
133
//
134
// Revision 1.19  2002/08/18 19:53:08  lampret
135
// Added store buffer.
136
//
137
// Revision 1.18  2002/08/15 06:04:11  lampret
138
// Fixed Xilinx trace buffer address. REported by Taylor Su.
139
//
140
// Revision 1.17  2002/08/12 05:31:44  lampret
141
// Added OR1200_WB_RETRY. Moved WB registered outsputs / samples inputs into lower section.
142
//
143
// Revision 1.16  2002/07/14 22:17:17  lampret
144
// Added simple trace buffer [only for Xilinx Virtex target]. Fixed instruction fetch abort when new exception is recognized.
145
//
146
// Revision 1.15  2002/06/08 16:20:21  lampret
147
// Added defines for enabling generic FF based memory macro for register file.
148
//
149
// Revision 1.14  2002/03/29 16:24:06  lampret
150
// Changed comment about synopsys to _synopsys_ because synthesis was complaining about unknown directives
151
//
152
// Revision 1.13  2002/03/29 15:16:55  lampret
153
// Some of the warnings fixed.
154
//
155
// Revision 1.12  2002/03/28 19:25:42  lampret
156
// Added second type of Virtual Silicon two-port SRAM (for register file). Changed defines for VS STP RAMs.
157
//
158
// Revision 1.11  2002/03/28 19:13:17  lampret
159
// Updated defines.
160
//
161
// Revision 1.10  2002/03/14 00:30:24  lampret
162
// Added alternative for critical path in DU.
163
//
164
// Revision 1.9  2002/03/11 01:26:26  lampret
165
// Fixed async loop. Changed multiplier type for ASIC.
166
//
167
// Revision 1.8  2002/02/11 04:33:17  lampret
168
// Speed optimizations (removed duplicate _cyc_ and _stb_). Fixed D/IMMU cache-inhibit attr.
169
//
170
// Revision 1.7  2002/02/01 19:56:54  lampret
171
// Fixed combinational loops.
172
//
173
// Revision 1.6  2002/01/19 14:10:22  lampret
174
// Fixed OR1200_XILINX_RAM32X1D.
175
//
176
// Revision 1.5  2002/01/18 07:56:00  lampret
177
// No more low/high priority interrupts (PICPR removed). Added tick timer exception. Added exception prefix (SR[EPH]). Fixed single-step bug whenreading NPC.
178
//
179
// Revision 1.4  2002/01/14 09:44:12  lampret
180
// Default ASIC configuration does not sample WB inputs.
181
//
182
// Revision 1.3  2002/01/08 00:51:08  lampret
183
// Fixed typo. OR1200_REGISTERED_OUTPUTS was not defined. Should be.
184
//
185
// Revision 1.2  2002/01/03 21:23:03  lampret
186
// Uncommented OR1200_REGISTERED_OUTPUTS for FPGA target.
187
//
188
// Revision 1.1  2002/01/03 08:16:15  lampret
189
// New prefixes for RTL files, prefixed module names. Updated cache controllers and MMUs.
190
//
191
// Revision 1.20  2001/12/04 05:02:36  lampret
192
// Added OR1200_GENERIC_MULTP2_32X32 and OR1200_ASIC_MULTP2_32X32
193
//
194
// Revision 1.19  2001/11/27 19:46:57  lampret
195
// Now FPGA and ASIC target are separate.
196
//
197
// Revision 1.18  2001/11/23 21:42:31  simons
198
// Program counter divided to PPC and NPC.
199
//
200
// Revision 1.17  2001/11/23 08:38:51  lampret
201
// Changed DSR/DRR behavior and exception detection.
202
//
203
// Revision 1.16  2001/11/20 21:30:38  lampret
204
// Added OR1200_REGISTERED_INPUTS.
205
//
206
// Revision 1.15  2001/11/19 14:29:48  simons
207
// Cashes disabled.
208
//
209
// Revision 1.14  2001/11/13 10:02:21  lampret
210
// Added 'setpc'. Renamed some signals (except_flushpipe into flushpipe etc)
211
//
212
// Revision 1.13  2001/11/12 01:45:40  lampret
213
// Moved flag bit into SR. Changed RF enable from constant enable to dynamic enable for read ports.
214
//
215
// Revision 1.12  2001/11/10 03:43:57  lampret
216
// Fixed exceptions.
217
//
218
// Revision 1.11  2001/11/02 18:57:14  lampret
219
// Modified virtual silicon instantiations.
220
//
221
// Revision 1.10  2001/10/21 17:57:16  lampret
222
// 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.
223
//
224
// Revision 1.9  2001/10/19 23:28:46  lampret
225
// Fixed some synthesis warnings. Configured with caches and MMUs.
226
//
227
// Revision 1.8  2001/10/14 13:12:09  lampret
228
// MP3 version.
229
//
230
// Revision 1.1.1.1  2001/10/06 10:18:36  igorm
231
// no message
232
//
233
// Revision 1.3  2001/08/17 08:01:19  lampret
234
// IC enable/disable.
235
//
236
// Revision 1.2  2001/08/13 03:36:20  lampret
237
// Added cfg regs. Moved all defines into one defines.v file. More cleanup.
238
//
239
// Revision 1.1  2001/08/09 13:39:33  lampret
240
// Major clean-up.
241
//
242
// Revision 1.2  2001/07/22 03:31:54  lampret
243
// Fixed RAM's oen bug. Cache bypass under development.
244
//
245
// Revision 1.1  2001/07/20 00:46:03  lampret
246
// Development version of RTL. Libraries are missing.
247
//
248
//
249
 
250
//
251
// Dump VCD
252
//
253
//`define OR1200_VCD_DUMP
254
 
255
//
256
// Generate debug messages during simulation
257
//
258
//`define OR1200_VERBOSE
259
 
260
//  `define OR1200_ASIC
261
////////////////////////////////////////////////////////
262
//
263
// Typical configuration for an ASIC
264
//
265
`ifdef OR1200_ASIC
266
 
267
//
268
// Target ASIC memories
269
//
270
//`define OR1200_ARTISAN_SSP
271
//`define OR1200_ARTISAN_SDP
272
//`define OR1200_ARTISAN_STP
273
`define OR1200_VIRTUALSILICON_SSP
274
//`define OR1200_VIRTUALSILICON_STP_T1
275
//`define OR1200_VIRTUALSILICON_STP_T2
276
 
277
//
278
// Do not implement Data cache
279
//
280
`define OR1200_NO_DC
281
 
282
//
283
// Do not implement Insn cache
284
//
285
`define OR1200_NO_IC
286
 
287
//
288
// Do not implement Data MMU
289
//
290
`define OR1200_NO_DMMU
291
 
292
//
293
// Do not implement Insn MMU
294
//
295
`define OR1200_NO_IMMU
296
 
297
//
298
// Select between ASIC optimized and generic multiplier
299
//
300
//`define OR1200_ASIC_MULTP2_32X32
301
`define OR1200_GENERIC_MULTP2_32X32
302
 
303
//
304
// Size/type of insn/data cache if implemented
305
//
306
// `define OR1200_IC_1W_512B
307
// `define OR1200_IC_1W_4KB
308
`define OR1200_IC_1W_8KB
309
// `define OR1200_DC_1W_4KB
310
`define OR1200_DC_1W_8KB
311
 
312
`else
313
 
314
 
315
/////////////////////////////////////////////////////////
316
//
317
// Typical configuration for an FPGA
318
//
319
 
320
//
321
// Target FPGA memories
322
//
323
//`define OR1200_ALTERA_LPM
324
//`define OR1200_XILINX_RAMB16
325
//`define OR1200_XILINX_RAMB4
326
//`define OR1200_XILINX_RAM32X1D
327
//`define OR1200_USE_RAM16X1D_FOR_RAM32X1D
328
`define OR1200_RAM_MODELS_VIRTEX
329
//`define BLK_MEM_GEN
330
 
331
//
332
// Do not implement Data cache
333
//
334
//`define OR1200_NO_DC
335
 
336
//
337
// Do not implement Insn cache
338
//
339
//`define OR1200_NO_IC
340
 
341
//
342
// Do not implement Data MMU
343
//
344
//`define OR1200_NO_DMMU
345
 
346
//
347
// Do not implement Insn MMU
348
//
349
//`define OR1200_NO_IMMU
350
 
351
//
352
// Select between ASIC and generic multiplier
353
//
354
// (Generic seems to trigger a bug in the Cadence Ncsim simulator)
355
//
356
//`define OR1200_ASIC_MULTP2_32X32
357
`define OR1200_GENERIC_MULTP2_32X32
358
 
359
//
360
// Size/type of insn/data cache if implemented
361
// (consider available FPGA memory resources)
362
//
363
//`define OR1200_IC_1W_512B
364
//`define OR1200_IC_1W_4KB
365
`define OR1200_IC_1W_8KB
366
//`define OR1200_DC_1W_4KB
367
`define OR1200_DC_1W_8KB
368
 
369
`endif
370
 
371
 
372
//////////////////////////////////////////////////////////
373
//
374
// Do not change below unless you know what you are doing
375
//
376
 
377
//
378
// Enable RAM BIST
379
//
380
// At the moment this only works for Virtual Silicon
381
// single port RAMs. For other RAMs it has not effect.
382
// Special wrapper for VS RAMs needs to be provided
383
// with scan flops to facilitate bist scan.
384
//
385
//`define OR1200_BIST
386
 
387
//
388
// Register OR1200 WISHBONE outputs
389
// (must be defined/enabled)
390
//
391
`define OR1200_REGISTERED_OUTPUTS
392
 
393
//
394
// Register OR1200 WISHBONE inputs
395
//
396
// (must be undefined/disabled)
397
//
398
//`define OR1200_REGISTERED_INPUTS
399
 
400
//
401
// Disable bursts if they are not supported by the
402
// memory subsystem (only affect cache line fill)
403
//
404
//`define OR1200_NO_BURSTS
405
//
406
 
407
//
408
// WISHBONE retry counter range
409
//
410
// 2^value range for retry counter. Retry counter
411
// is activated whenever *wb_rty_i is asserted and
412
// until retry counter expires, corresponding
413
// WISHBONE interface is deactivated.
414
//
415
// To disable retry counters and *wb_rty_i all together,
416
// undefine this macro.
417
//
418
//`define OR1200_WB_RETRY 7
419
 
420
//
421
// WISHBONE Consecutive Address Burst
422
//
423
// This was used prior to WISHBONE B3 specification
424
// to identify bursts. It is no longer needed but
425
// remains enabled for compatibility with old designs.
426
//
427
// To remove *wb_cab_o ports undefine this macro.
428
//
429
`define OR1200_WB_CAB
430
 
431
//
432
// WISHBONE B3 compatible interface
433
//
434
// This follows the WISHBONE B3 specification.
435
// It is not enabled by default because most
436
// designs still don't use WB b3.
437
//
438
// To enable *wb_cti_o/*wb_bte_o ports,
439
// define this macro.
440
//
441
//`define OR1200_WB_B3
442
 
443
//
444
// Enable additional synthesis directives if using
445
// _Synopsys_ synthesis tool
446
//
447
//`define OR1200_ADDITIONAL_SYNOPSYS_DIRECTIVES
448
 
449
//
450
// Enables default statement in some case blocks
451
// and disables Synopsys synthesis directive full_case
452
//
453
// By default it is enabled. When disabled it
454
// can increase clock frequency.
455
//
456
`define OR1200_CASE_DEFAULT
457
 
458
//
459
// Operand width / register file address width
460
//
461
// (DO NOT CHANGE)
462
//
463
`define OR1200_OPERAND_WIDTH            32
464
`define OR1200_REGFILE_ADDR_WIDTH       5
465
 
466
//
467
// l.add/l.addi/l.and and optional l.addc/l.addic
468
// also set (compare) flag when result of their
469
// operation equals zero
470
//
471
// At the time of writing this, default or32
472
// C/C++ compiler doesn't generate code that
473
// would benefit from this optimization.
474
//
475
// By default this optimization is disabled to
476
// save area.
477
//
478
//`define OR1200_ADDITIONAL_FLAG_MODIFIERS
479
 
480
//
481
// Implement l.addc/l.addic instructions
482
//
483
// By default implementation of l.addc/l.addic
484
// instructions is enabled in case you need them.
485
// If you don't use them, then disable implementation
486
// to save area.
487
//
488
`define OR1200_IMPL_ADDC
489
 
490
//
491
// Implement carry bit SR[CY]
492
//
493
// By default implementation of SR[CY] is enabled
494
// to be compliant with the simulator. However
495
// SR[CY] is explicitly only used by l.addc/l.addic
496
// instructions and if these two insns are not
497
// implemented there is not much point having SR[CY].
498
//
499
`define OR1200_IMPL_CY
500
 
501
//
502
// Implement optional l.div/l.divu instructions
503
//
504
// By default divide instructions are not implemented
505
// to save area and increase clock frequency. or32 C/C++
506
// compiler can use soft library for division.
507
//
508
// To implement divide, multiplier needs to be implemented.
509
//
510
//`define OR1200_IMPL_DIV
511
 
512
//
513
// Implement rotate in the ALU
514
//
515
// At the time of writing this, or32
516
// C/C++ compiler doesn't generate rotate
517
// instructions. However or32 assembler
518
// can assemble code that uses rotate insn.
519
// This means that rotate instructions
520
// must be used manually inserted.
521
//
522
// By default implementation of rotate
523
// is disabled to save area and increase
524
// clock frequency.
525
//
526
//`define OR1200_IMPL_ALU_ROTATE
527
 
528
//
529
// Type of ALU compare to implement
530
//
531
// Try either one to find what yields
532
// higher clock frequencyin your case.
533
//
534
//`define OR1200_IMPL_ALU_COMP1
535
`define OR1200_IMPL_ALU_COMP2
536
 
537
//
538
// Implement multiplier
539
//
540
// By default multiplier is implemented
541
//
542
`define OR1200_MULT_IMPLEMENTED
543
 
544
//
545
// Implement multiply-and-accumulate
546
//
547
// By default MAC is implemented. To
548
// implement MAC, multiplier needs to be
549
// implemented.
550
//
551
`define OR1200_MAC_IMPLEMENTED
552
 
553
//
554
// Low power, slower multiplier
555
//
556
// Select between low-power (larger) multiplier
557
// and faster multiplier. The actual difference
558
// is only AND logic that prevents distribution
559
// of operands into the multiplier when instruction
560
// in execution is not multiply instruction
561
//
562
//`define OR1200_LOWPWR_MULT
563
 
564
//
565
// Clock ratio RISC clock versus WB clock
566
//
567
// If you plan to run WB:RISC clock fixed to 1:1, disable
568
// both defines
569
//
570
// For WB:RISC 1:2 or 1:1, enable OR1200_CLKDIV_2_SUPPORTED
571
// and use clmode to set ratio
572
//
573
// For WB:RISC 1:4, 1:2 or 1:1, enable both defines and use
574
// clmode to set ratio
575
//
576
`define OR1200_CLKDIV_2_SUPPORTED
577
//`define OR1200_CLKDIV_4_SUPPORTED
578
 
579
//
580
// Type of register file RAM
581
//
582
// Memory macro w/ two ports (see or1200_tpram_32x32.v)
583
//`define OR1200_RFRAM_TWOPORT
584
//
585
// Memory macro dual port (see or1200_dpram_32x32.v)
586
//`define OR1200_RFRAM_DUALPORT
587
//
588
// Generic (flip-flop based) register file (see or1200_rfram_generic.v)
589
//`define OR1200_RFRAM_GENERIC
590
 
591
//
592
// Type of mem2reg aligner to implement.
593
//
594
// Once OR1200_IMPL_MEM2REG2 yielded faster
595
// circuit, however with today tools it will
596
// most probably give you slower circuit.
597
//
598
`define OR1200_IMPL_MEM2REG1
599
//`define OR1200_IMPL_MEM2REG2
600
 
601
//
602
// ALUOPs
603
//
604
`define OR1200_ALUOP_WIDTH      4
605
`define OR1200_ALUOP_NOP        4'd4
606
/* Order defined by arith insns that have two source operands both in regs
607
   (see binutils/include/opcode/or32.h) */
608
`define OR1200_ALUOP_ADD        4'd0
609
`define OR1200_ALUOP_ADDC       4'd1
610
`define OR1200_ALUOP_SUB        4'd2
611
`define OR1200_ALUOP_AND        4'd3
612
`define OR1200_ALUOP_OR         4'd4
613
`define OR1200_ALUOP_XOR        4'd5
614
`define OR1200_ALUOP_MUL        4'd6
615
`define OR1200_ALUOP_CUST5      4'd7
616
`define OR1200_ALUOP_SHROT      4'd8
617
`define OR1200_ALUOP_DIV        4'd9
618
`define OR1200_ALUOP_DIVU       4'd10
619
/* Order not specifically defined. */
620
`define OR1200_ALUOP_IMM        4'd11
621
`define OR1200_ALUOP_MOVHI      4'd12
622
`define OR1200_ALUOP_COMP       4'd13
623
`define OR1200_ALUOP_MTSR       4'd14
624
`define OR1200_ALUOP_MFSR       4'd15
625
`define OR1200_ALUOP_CMOV 4'd14
626
`define OR1200_ALUOP_FF1  4'd15
627
//
628
// MACOPs
629
//
630
`define OR1200_MACOP_WIDTH      2
631
`define OR1200_MACOP_NOP        2'b00
632
`define OR1200_MACOP_MAC        2'b01
633
`define OR1200_MACOP_MSB        2'b10
634
 
635
//
636
// Shift/rotate ops
637
//
638
`define OR1200_SHROTOP_WIDTH    2
639
`define OR1200_SHROTOP_NOP      2'd0
640
`define OR1200_SHROTOP_SLL      2'd0
641
`define OR1200_SHROTOP_SRL      2'd1
642
`define OR1200_SHROTOP_SRA      2'd2
643
`define OR1200_SHROTOP_ROR      2'd3
644
 
645
// Execution cycles per instruction
646
`define OR1200_MULTICYCLE_WIDTH 2
647
`define OR1200_ONE_CYCLE                2'd0
648
`define OR1200_TWO_CYCLES               2'd1
649
 
650
// Operand MUX selects
651
`define OR1200_SEL_WIDTH                2
652
`define OR1200_SEL_RF                   2'd0
653
`define OR1200_SEL_IMM                  2'd1
654
`define OR1200_SEL_EX_FORW              2'd2
655
`define OR1200_SEL_WB_FORW              2'd3
656
 
657
//
658
// BRANCHOPs
659
//
660
`define OR1200_BRANCHOP_WIDTH           3
661
`define OR1200_BRANCHOP_NOP             3'd0
662
`define OR1200_BRANCHOP_J               3'd1
663
`define OR1200_BRANCHOP_JR              3'd2
664
`define OR1200_BRANCHOP_BAL             3'd3
665
`define OR1200_BRANCHOP_BF              3'd4
666
`define OR1200_BRANCHOP_BNF             3'd5
667
`define OR1200_BRANCHOP_RFE             3'd6
668
 
669
//
670
// LSUOPs
671
//
672
// Bit 0: sign extend
673
// Bits 1-2: 00 doubleword, 01 byte, 10 halfword, 11 singleword
674
// Bit 3: 0 load, 1 store
675
`define OR1200_LSUOP_WIDTH              4
676
`define OR1200_LSUOP_NOP                4'b0000
677
`define OR1200_LSUOP_LBZ                4'b0010
678
`define OR1200_LSUOP_LBS                4'b0011
679
`define OR1200_LSUOP_LHZ                4'b0100
680
`define OR1200_LSUOP_LHS                4'b0101
681
`define OR1200_LSUOP_LWZ                4'b0110
682
`define OR1200_LSUOP_LWS                4'b0111
683
`define OR1200_LSUOP_LD         4'b0001
684
`define OR1200_LSUOP_SD         4'b1000
685
`define OR1200_LSUOP_SB         4'b1010
686
`define OR1200_LSUOP_SH         4'b1100
687
`define OR1200_LSUOP_SW         4'b1110
688
 
689
// FETCHOPs
690
`define OR1200_FETCHOP_WIDTH            1
691
`define OR1200_FETCHOP_NOP              1'b0
692
`define OR1200_FETCHOP_LW               1'b1
693
 
694
//
695
// Register File Write-Back OPs
696
//
697
// Bit 0: register file write enable
698
// Bits 2-1: write-back mux selects
699
`define OR1200_RFWBOP_WIDTH             3
700
`define OR1200_RFWBOP_NOP               3'b000
701
`define OR1200_RFWBOP_ALU               3'b001
702
`define OR1200_RFWBOP_LSU               3'b011
703
`define OR1200_RFWBOP_SPRS              3'b101
704
`define OR1200_RFWBOP_LR                3'b111
705
 
706
// Compare instructions
707
`define OR1200_COP_SFEQ       3'b000
708
`define OR1200_COP_SFNE       3'b001
709
`define OR1200_COP_SFGT       3'b010
710
`define OR1200_COP_SFGE       3'b011
711
`define OR1200_COP_SFLT       3'b100
712
`define OR1200_COP_SFLE       3'b101
713
`define OR1200_COP_X          3'b111
714
`define OR1200_SIGNED_COMPARE 'd3
715
`define OR1200_COMPOP_WIDTH     4
716
 
717
//
718
// TAGs for instruction bus
719
//
720
`define OR1200_ITAG_IDLE        4'h0    // idle bus
721
`define OR1200_ITAG_NI          4'h1    // normal insn
722
`define OR1200_ITAG_BE          4'hb    // Bus error exception
723
`define OR1200_ITAG_PE          4'hc    // Page fault exception
724
`define OR1200_ITAG_TE          4'hd    // TLB miss exception
725
 
726
//
727
// TAGs for data bus
728
//
729
`define OR1200_DTAG_IDLE        4'h0    // idle bus
730
`define OR1200_DTAG_ND          4'h1    // normal data
731
`define OR1200_DTAG_AE          4'ha    // Alignment exception
732
`define OR1200_DTAG_BE          4'hb    // Bus error exception
733
`define OR1200_DTAG_PE          4'hc    // Page fault exception
734
`define OR1200_DTAG_TE          4'hd    // TLB miss exception
735
 
736
 
737
//////////////////////////////////////////////
738
//
739
// ORBIS32 ISA specifics
740
//
741
 
742
// SHROT_OP position in machine word
743
`define OR1200_SHROTOP_POS              7:6
744
 
745
// ALU instructions multicycle field in machine word
746
`define OR1200_ALUMCYC_POS              9:8
747
 
748
//
749
// Instruction opcode groups (basic)
750
//
751
`define OR1200_OR32_J                 6'b000000
752
`define OR1200_OR32_JAL               6'b000001
753
`define OR1200_OR32_BNF               6'b000011
754
`define OR1200_OR32_BF                6'b000100
755
`define OR1200_OR32_NOP               6'b000101
756
`define OR1200_OR32_MOVHI             6'b000110
757
`define OR1200_OR32_XSYNC             6'b001000
758
`define OR1200_OR32_RFE               6'b001001
759
/* */
760
`define OR1200_OR32_JR                6'b010001
761
`define OR1200_OR32_JALR              6'b010010
762
`define OR1200_OR32_MACI              6'b010011
763
/* */
764
`define OR1200_OR32_LWZ               6'b100001
765
`define OR1200_OR32_LBZ               6'b100011
766
`define OR1200_OR32_LBS               6'b100100
767
`define OR1200_OR32_LHZ               6'b100101
768
`define OR1200_OR32_LHS               6'b100110
769
`define OR1200_OR32_ADDI              6'b100111
770
`define OR1200_OR32_ADDIC             6'b101000
771
`define OR1200_OR32_ANDI              6'b101001
772
`define OR1200_OR32_ORI               6'b101010
773
`define OR1200_OR32_XORI              6'b101011
774
`define OR1200_OR32_MULI              6'b101100
775
`define OR1200_OR32_MFSPR             6'b101101
776
`define OR1200_OR32_SH_ROTI           6'b101110
777
`define OR1200_OR32_SFXXI             6'b101111
778
/* */
779
`define OR1200_OR32_MTSPR             6'b110000
780
`define OR1200_OR32_MACMSB            6'b110001
781
/* */
782
`define OR1200_OR32_SW                6'b110101
783
`define OR1200_OR32_SB                6'b110110
784
`define OR1200_OR32_SH                6'b110111
785
`define OR1200_OR32_ALU               6'b111000
786
`define OR1200_OR32_SFXX              6'b111001
787
//`define OR1200_OR32_CUST5             6'b111100
788
 
789
 
790
/////////////////////////////////////////////////////
791
//
792
// Exceptions
793
//
794
 
795
//
796
// Exception vectors per OR1K architecture:
797
// 0xPPPPP100 - reset
798
// 0xPPPPP200 - bus error
799
// ... etc
800
// where P represents exception prefix.
801
//
802
// Exception vectors can be customized as per
803
// the following formula:
804
// 0xPPPPPNVV - exception N
805
//
806
// P represents exception prefix
807
// N represents exception N
808
// VV represents length of the individual vector space,
809
//   usually it is 8 bits wide and starts with all bits zero
810
//
811
 
812
//
813
// PPPPP and VV parts
814
//
815
// Sum of these two defines needs to be 28
816
//
817
`define OR1200_EXCEPT_EPH0_P 20'h00000
818
`define OR1200_EXCEPT_EPH1_P 20'hF0000
819
`define OR1200_EXCEPT_V            8'h00
820
 
821
//
822
// N part width
823
//
824
`define OR1200_EXCEPT_WIDTH 4
825
 
826
//
827
// Definition of exception vectors
828
//
829
// To avoid implementation of a certain exception,
830
// simply comment out corresponding line
831
//
832
`define OR1200_EXCEPT_UNUSED            `OR1200_EXCEPT_WIDTH'hf
833
`define OR1200_EXCEPT_TRAP              `OR1200_EXCEPT_WIDTH'he
834
`define OR1200_EXCEPT_BREAK             `OR1200_EXCEPT_WIDTH'hd
835
`define OR1200_EXCEPT_SYSCALL           `OR1200_EXCEPT_WIDTH'hc
836
`define OR1200_EXCEPT_RANGE             `OR1200_EXCEPT_WIDTH'hb
837
`define OR1200_EXCEPT_ITLBMISS          `OR1200_EXCEPT_WIDTH'ha
838
`define OR1200_EXCEPT_DTLBMISS          `OR1200_EXCEPT_WIDTH'h9
839
`define OR1200_EXCEPT_INT               `OR1200_EXCEPT_WIDTH'h8
840
`define OR1200_EXCEPT_ILLEGAL           `OR1200_EXCEPT_WIDTH'h7
841
`define OR1200_EXCEPT_ALIGN             `OR1200_EXCEPT_WIDTH'h6
842
`define OR1200_EXCEPT_TICK              `OR1200_EXCEPT_WIDTH'h5
843
`define OR1200_EXCEPT_IPF               `OR1200_EXCEPT_WIDTH'h4
844
`define OR1200_EXCEPT_DPF               `OR1200_EXCEPT_WIDTH'h3
845
`define OR1200_EXCEPT_BUSERR            `OR1200_EXCEPT_WIDTH'h2
846
`define OR1200_EXCEPT_RESET             `OR1200_EXCEPT_WIDTH'h1
847
`define OR1200_EXCEPT_NONE              `OR1200_EXCEPT_WIDTH'h0
848
 
849
 
850
/////////////////////////////////////////////////////
851
//
852
// SPR groups
853
//
854
 
855
// Bits that define the group
856
`define OR1200_SPR_GROUP_BITS   15:11
857
 
858
// Width of the group bits
859
`define OR1200_SPR_GROUP_WIDTH  5
860
 
861
// Bits that define offset inside the group
862
`define OR1200_SPR_OFS_BITS 10:0
863
 
864
// List of groups
865
`define OR1200_SPR_GROUP_SYS    5'd00
866
`define OR1200_SPR_GROUP_DMMU   5'd01
867
`define OR1200_SPR_GROUP_IMMU   5'd02
868
`define OR1200_SPR_GROUP_DC     5'd03
869
`define OR1200_SPR_GROUP_IC     5'd04
870
`define OR1200_SPR_GROUP_MAC    5'd05
871
`define OR1200_SPR_GROUP_DU     5'd06
872
`define OR1200_SPR_GROUP_PM     5'd08
873
`define OR1200_SPR_GROUP_PIC    5'd09
874
`define OR1200_SPR_GROUP_TT     5'd10
875
 
876
 
877
/////////////////////////////////////////////////////
878
//
879
// System group
880
//
881
 
882
//
883
// System registers
884
//
885
`define OR1200_SPR_CFGR         7'd0
886
`define OR1200_SPR_RF           6'd32   // 1024 >> 5
887
`define OR1200_SPR_NPC          11'd16
888
`define OR1200_SPR_SR           11'd17
889
`define OR1200_SPR_PPC          11'd18
890
`define OR1200_SPR_EPCR         11'd32
891
`define OR1200_SPR_EEAR         11'd48
892
`define OR1200_SPR_ESR          11'd64
893
 
894
//
895
// SR bits
896
//
897
`define OR1200_SR_WIDTH 16
898
`define OR1200_SR_SM   0
899
`define OR1200_SR_TEE  1
900
`define OR1200_SR_IEE  2
901
`define OR1200_SR_DCE  3
902
`define OR1200_SR_ICE  4
903
`define OR1200_SR_DME  5
904
`define OR1200_SR_IME  6
905
`define OR1200_SR_LEE  7
906
`define OR1200_SR_CE   8
907
`define OR1200_SR_F    9
908
`define OR1200_SR_CY   10       // Unused
909
`define OR1200_SR_OV   11       // Unused
910
`define OR1200_SR_OVE  12       // Unused
911
`define OR1200_SR_DSX  13       // Unused
912
`define OR1200_SR_EPH  14
913
`define OR1200_SR_FO   15
914
`define OR1200_SR_CID  31:28    // Unimplemented
915
 
916
//
917
// Bits that define offset inside the group
918
//
919
`define OR1200_SPROFS_BITS 10:0
920
 
921
//
922
// Default Exception Prefix
923
//
924
// 1'b0 - OR1200_EXCEPT_EPH0_P (0x0000_0000)
925
// 1'b1 - OR1200_EXCEPT_EPH1_P (0xF000_0000)
926
//
927
`define OR1200_SR_EPH_DEF       1'b0
928
 
929
/////////////////////////////////////////////////////
930
//
931
// Power Management (PM)
932
//
933
 
934
// Define it if you want PM implemented
935
`define OR1200_PM_IMPLEMENTED
936
 
937
// Bit positions inside PMR (don't change)
938
`define OR1200_PM_PMR_SDF 3:0
939
`define OR1200_PM_PMR_DME 4
940
`define OR1200_PM_PMR_SME 5
941
`define OR1200_PM_PMR_DCGE 6
942
`define OR1200_PM_PMR_UNUSED 31:7
943
 
944
// PMR offset inside PM group of registers
945
`define OR1200_PM_OFS_PMR 11'b0
946
 
947
// PM group
948
`define OR1200_SPRGRP_PM 5'd8
949
 
950
// Define if PMR can be read/written at any address inside PM group
951
`define OR1200_PM_PARTIAL_DECODING
952
 
953
// Define if reading PMR is allowed
954
`define OR1200_PM_READREGS
955
 
956
// Define if unused PMR bits should be zero
957
`define OR1200_PM_UNUSED_ZERO
958
 
959
 
960
/////////////////////////////////////////////////////
961
//
962
// Debug Unit (DU)
963
//
964
 
965
// Define it if you want DU implemented
966
`define OR1200_DU_IMPLEMENTED
967
 
968
//
969
// Define if you want HW Breakpoints
970
// (if HW breakpoints are not implemented
971
// only default software trapping is
972
// possible with l.trap insn - this is
973
// however already enough for use
974
// with or32 gdb)
975
//
976
//`define OR1200_DU_HWBKPTS
977
 
978
// Number of DVR/DCR pairs if HW breakpoints enabled
979
`define OR1200_DU_DVRDCR_PAIRS 8
980
 
981
// Define if you want trace buffer
982
//`define OR1200_DU_TB_IMPLEMENTED
983
 
984
//
985
// Address offsets of DU registers inside DU group
986
//
987
// To not implement a register, doq not define its address
988
//
989
`ifdef OR1200_DU_HWBKPTS
990
`define OR1200_DU_DVR0          11'd0
991
`define OR1200_DU_DVR1          11'd1
992
`define OR1200_DU_DVR2          11'd2
993
`define OR1200_DU_DVR3          11'd3
994
`define OR1200_DU_DVR4          11'd4
995
`define OR1200_DU_DVR5          11'd5
996
`define OR1200_DU_DVR6          11'd6
997
`define OR1200_DU_DVR7          11'd7
998
`define OR1200_DU_DCR0          11'd8
999
`define OR1200_DU_DCR1          11'd9
1000
`define OR1200_DU_DCR2          11'd10
1001
`define OR1200_DU_DCR3          11'd11
1002
`define OR1200_DU_DCR4          11'd12
1003
`define OR1200_DU_DCR5          11'd13
1004
`define OR1200_DU_DCR6          11'd14
1005
`define OR1200_DU_DCR7          11'd15
1006
`endif
1007
`define OR1200_DU_DMR1          11'd16
1008
`ifdef OR1200_DU_HWBKPTS
1009
`define OR1200_DU_DMR2          11'd17
1010
`define OR1200_DU_DWCR0         11'd18
1011
`define OR1200_DU_DWCR1         11'd19
1012
`endif
1013
`define OR1200_DU_DSR           11'd20
1014
`define OR1200_DU_DRR           11'd21
1015
`ifdef OR1200_DU_TB_IMPLEMENTED
1016
`define OR1200_DU_TBADR         11'h0ff
1017
`define OR1200_DU_TBIA          11'h1xx
1018
`define OR1200_DU_TBIM          11'h2xx
1019
`define OR1200_DU_TBAR          11'h3xx
1020
`define OR1200_DU_TBTS          11'h4xx
1021
`endif
1022
 
1023
// Position of offset bits inside SPR address
1024
`define OR1200_DUOFS_BITS       10:0
1025
 
1026
// DCR bits
1027
`define OR1200_DU_DCR_DP        0
1028
`define OR1200_DU_DCR_CC        3:1
1029
`define OR1200_DU_DCR_SC        4
1030
`define OR1200_DU_DCR_CT        7:5
1031
 
1032
// DMR1 bits
1033
`define OR1200_DU_DMR1_CW0      1:0
1034
`define OR1200_DU_DMR1_CW1      3:2
1035
`define OR1200_DU_DMR1_CW2      5:4
1036
`define OR1200_DU_DMR1_CW3      7:6
1037
`define OR1200_DU_DMR1_CW4      9:8
1038
`define OR1200_DU_DMR1_CW5      11:10
1039
`define OR1200_DU_DMR1_CW6      13:12
1040
`define OR1200_DU_DMR1_CW7      15:14
1041
`define OR1200_DU_DMR1_CW8      17:16
1042
`define OR1200_DU_DMR1_CW9      19:18
1043
`define OR1200_DU_DMR1_CW10     21:20
1044
`define OR1200_DU_DMR1_ST       22
1045
`define OR1200_DU_DMR1_BT       23
1046
`define OR1200_DU_DMR1_DXFW     24
1047
`define OR1200_DU_DMR1_ETE      25
1048
 
1049
// DMR2 bits
1050
`define OR1200_DU_DMR2_WCE0     0
1051
`define OR1200_DU_DMR2_WCE1     1
1052
`define OR1200_DU_DMR2_AWTC     12:2
1053
`define OR1200_DU_DMR2_WGB      23:13
1054
 
1055
// DWCR bits
1056
`define OR1200_DU_DWCR_COUNT    15:0
1057
`define OR1200_DU_DWCR_MATCH    31:16
1058
 
1059
// DSR bits
1060
`define OR1200_DU_DSR_WIDTH     14
1061
`define OR1200_DU_DSR_RSTE      0
1062
`define OR1200_DU_DSR_BUSEE     1
1063
`define OR1200_DU_DSR_DPFE      2
1064
`define OR1200_DU_DSR_IPFE      3
1065
`define OR1200_DU_DSR_TTE       4
1066
`define OR1200_DU_DSR_AE        5
1067
`define OR1200_DU_DSR_IIE       6
1068
`define OR1200_DU_DSR_IE        7
1069
`define OR1200_DU_DSR_DME       8
1070
`define OR1200_DU_DSR_IME       9
1071
`define OR1200_DU_DSR_RE        10
1072
`define OR1200_DU_DSR_SCE       11
1073
`define OR1200_DU_DSR_BE        12
1074
`define OR1200_DU_DSR_TE        13
1075
 
1076
// DRR bits
1077
`define OR1200_DU_DRR_RSTE      0
1078
`define OR1200_DU_DRR_BUSEE     1
1079
`define OR1200_DU_DRR_DPFE      2
1080
`define OR1200_DU_DRR_IPFE      3
1081
`define OR1200_DU_DRR_TTE       4
1082
`define OR1200_DU_DRR_AE        5
1083
`define OR1200_DU_DRR_IIE       6
1084
`define OR1200_DU_DRR_IE        7
1085
`define OR1200_DU_DRR_DME       8
1086
`define OR1200_DU_DRR_IME       9
1087
`define OR1200_DU_DRR_RE        10
1088
`define OR1200_DU_DRR_SCE       11
1089
`define OR1200_DU_DRR_BE        12
1090
`define OR1200_DU_DRR_TE        13
1091
 
1092
// Define if reading DU regs is allowed
1093
`define OR1200_DU_READREGS
1094
 
1095
// Define if unused DU registers bits should be zero
1096
`define OR1200_DU_UNUSED_ZERO
1097
 
1098
// Define if IF/LSU status is not needed by devel i/f
1099
`define OR1200_DU_STATUS_UNIMPLEMENTED
1100
 
1101
/////////////////////////////////////////////////////
1102
//
1103
// Programmable Interrupt Controller (PIC)
1104
//
1105
 
1106
// Define it if you want PIC implemented
1107
`define OR1200_PIC_IMPLEMENTED
1108
 
1109
// Define number of interrupt inputs (2-31)
1110
`define OR1200_PIC_INTS 20
1111
 
1112
// Address offsets of PIC registers inside PIC group
1113
`define OR1200_PIC_OFS_PICMR 2'd0
1114
`define OR1200_PIC_OFS_PICSR 2'd2
1115
 
1116
// Position of offset bits inside SPR address
1117
`define OR1200_PICOFS_BITS 1:0
1118
 
1119
// Define if you want these PIC registers to be implemented
1120
`define OR1200_PIC_PICMR
1121
`define OR1200_PIC_PICSR
1122
 
1123
// Define if reading PIC registers is allowed
1124
`define OR1200_PIC_READREGS
1125
 
1126
// Define if unused PIC register bits should be zero
1127
`define OR1200_PIC_UNUSED_ZERO
1128
 
1129
 
1130
/////////////////////////////////////////////////////
1131
//
1132
// Tick Timer (TT)
1133
//
1134
 
1135
// Define it if you want TT implemented
1136
`define OR1200_TT_IMPLEMENTED
1137
 
1138
// Address offsets of TT registers inside TT group
1139
`define OR1200_TT_OFS_TTMR 1'd0
1140
`define OR1200_TT_OFS_TTCR 1'd1
1141
 
1142
// Position of offset bits inside SPR group
1143
`define OR1200_TTOFS_BITS 0
1144
 
1145
// Define if you want these TT registers to be implemented
1146
`define OR1200_TT_TTMR
1147
`define OR1200_TT_TTCR
1148
 
1149
// TTMR bits
1150
`define OR1200_TT_TTMR_TP 27:0
1151
`define OR1200_TT_TTMR_IP 28
1152
`define OR1200_TT_TTMR_IE 29
1153
`define OR1200_TT_TTMR_M 31:30
1154
 
1155
// Define if reading TT registers is allowed
1156
`define OR1200_TT_READREGS
1157
 
1158
 
1159
//////////////////////////////////////////////
1160
//
1161
// MAC
1162
//
1163
`define OR1200_MAC_ADDR         0        // MACLO 0xxxxxxxx1, MACHI 0xxxxxxxx0
1164
`define OR1200_MAC_SPR_WE               // Define if MACLO/MACHI are SPR writable
1165
 
1166
//
1167
// Shift {MACHI,MACLO} into destination register when executing l.macrc
1168
//
1169
// According to architecture manual there is no shift, so default value is 0.
1170
//
1171
// However the implementation has deviated in this from the arch manual and had hard coded shift by 28 bits which
1172
// is a useful optimization for MP3 decoding (if using libmad fixed point library). Shifts are no longer
1173
// default setup, but if you need to remain backward compatible, define your shift bits, which were normally
1174
// dest_GPR = {MACHI,MACLO}[59:28]
1175
`define OR1200_MAC_SHIFTBY      0        // 0 = According to arch manual, 28 = obsolete backward compatibility
1176
 
1177
 
1178
//////////////////////////////////////////////
1179
//
1180
// Data MMU (DMMU)
1181
//
1182
 
1183
//
1184
// Address that selects between TLB TR and MR
1185
//
1186
`define OR1200_DTLB_TM_ADDR     7
1187
 
1188
//
1189
// DTLBMR fields
1190
//
1191
`define OR1200_DTLBMR_V_BITS    0
1192
`define OR1200_DTLBMR_CID_BITS  4:1
1193
`define OR1200_DTLBMR_RES_BITS  11:5
1194
`define OR1200_DTLBMR_VPN_BITS  31:13
1195
 
1196
//
1197
// DTLBTR fields
1198
//
1199
`define OR1200_DTLBTR_CC_BITS   0
1200
`define OR1200_DTLBTR_CI_BITS   1
1201
`define OR1200_DTLBTR_WBC_BITS  2
1202
`define OR1200_DTLBTR_WOM_BITS  3
1203
`define OR1200_DTLBTR_A_BITS    4
1204
`define OR1200_DTLBTR_D_BITS    5
1205
`define OR1200_DTLBTR_URE_BITS  6
1206
`define OR1200_DTLBTR_UWE_BITS  7
1207
`define OR1200_DTLBTR_SRE_BITS  8
1208
`define OR1200_DTLBTR_SWE_BITS  9
1209
`define OR1200_DTLBTR_RES_BITS  11:10
1210
`define OR1200_DTLBTR_PPN_BITS  31:13
1211
 
1212
//
1213
// DTLB configuration
1214
//
1215
`define OR1200_DMMU_PS          13                                      // 13 for 8KB page size
1216
`define OR1200_DTLB_INDXW       6                                       // 6 for 64 entry DTLB  7 for 128 entries
1217
`define OR1200_DTLB_INDXL       `OR1200_DMMU_PS                         // 13                   13
1218
`define OR1200_DTLB_INDXH       `OR1200_DMMU_PS+`OR1200_DTLB_INDXW-1    // 18                   19
1219
`define OR1200_DTLB_INDX        `OR1200_DTLB_INDXH:`OR1200_DTLB_INDXL   // 18:13                19:13
1220
`define OR1200_DTLB_TAGW        32-`OR1200_DTLB_INDXW-`OR1200_DMMU_PS   // 13                   12
1221
`define OR1200_DTLB_TAGL        `OR1200_DTLB_INDXH+1                    // 19                   20
1222
`define OR1200_DTLB_TAG         31:`OR1200_DTLB_TAGL                    // 31:19                31:20
1223
`define OR1200_DTLBMRW          `OR1200_DTLB_TAGW+1                     // +1 because of V bit
1224
`define OR1200_DTLBTRW          32-`OR1200_DMMU_PS+5                    // +5 because of protection bits and CI
1225
 
1226
//
1227
// Cache inhibit while DMMU is not enabled/implemented
1228
//
1229
// cache inhibited 0GB-4GB              1'b1
1230
// cache inhibited 0GB-2GB              !dcpu_adr_i[31]
1231
// cache inhibited 0GB-1GB 2GB-3GB      !dcpu_adr_i[30]
1232
// cache inhibited 1GB-2GB 3GB-4GB      dcpu_adr_i[30]
1233
// cache inhibited 2GB-4GB (default)    dcpu_adr_i[31]
1234
// cached 0GB-4GB                       1'b0
1235
//
1236
`define OR1200_DMMU_CI                  dcpu_adr_i[31]
1237
 
1238
 
1239
//////////////////////////////////////////////
1240
//
1241
// Insn MMU (IMMU)
1242
//
1243
 
1244
//
1245
// Address that selects between TLB TR and MR
1246
//
1247
`define OR1200_ITLB_TM_ADDR     7
1248
 
1249
//
1250
// ITLBMR fields
1251
//
1252
`define OR1200_ITLBMR_V_BITS    0
1253
`define OR1200_ITLBMR_CID_BITS  4:1
1254
`define OR1200_ITLBMR_RES_BITS  11:5
1255
`define OR1200_ITLBMR_VPN_BITS  31:13
1256
 
1257
//
1258
// ITLBTR fields
1259
//
1260
`define OR1200_ITLBTR_CC_BITS   0
1261
`define OR1200_ITLBTR_CI_BITS   1
1262
`define OR1200_ITLBTR_WBC_BITS  2
1263
`define OR1200_ITLBTR_WOM_BITS  3
1264
`define OR1200_ITLBTR_A_BITS    4
1265
`define OR1200_ITLBTR_D_BITS    5
1266
`define OR1200_ITLBTR_SXE_BITS  6
1267
`define OR1200_ITLBTR_UXE_BITS  7
1268
`define OR1200_ITLBTR_RES_BITS  11:8
1269
`define OR1200_ITLBTR_PPN_BITS  31:13
1270
 
1271
//
1272
// ITLB configuration
1273
//
1274
`define OR1200_IMMU_PS          13                                      // 13 for 8KB page size
1275
`define OR1200_ITLB_INDXW       6                                       // 6 for 64 entry ITLB  7 for 128 entries
1276
`define OR1200_ITLB_INDXL       `OR1200_IMMU_PS                         // 13                   13
1277
`define OR1200_ITLB_INDXH       `OR1200_IMMU_PS+`OR1200_ITLB_INDXW-1    // 18                   19
1278
`define OR1200_ITLB_INDX        `OR1200_ITLB_INDXH:`OR1200_ITLB_INDXL   // 18:13                19:13
1279
`define OR1200_ITLB_TAGW        32-`OR1200_ITLB_INDXW-`OR1200_IMMU_PS   // 13                   12
1280
`define OR1200_ITLB_TAGL        `OR1200_ITLB_INDXH+1                    // 19                   20
1281
`define OR1200_ITLB_TAG         31:`OR1200_ITLB_TAGL                    // 31:19                31:20
1282
`define OR1200_ITLBMRW          `OR1200_ITLB_TAGW+1                     // +1 because of V bit
1283
`define OR1200_ITLBTRW          32-`OR1200_IMMU_PS+3                    // +3 because of protection bits and CI
1284
 
1285
//
1286
// Cache inhibit while IMMU is not enabled/implemented
1287
// Note: all combinations that use icpu_adr_i cause async loop
1288
//
1289
// cache inhibited 0GB-4GB              1'b1
1290
// cache inhibited 0GB-2GB              !icpu_adr_i[31]
1291
// cache inhibited 0GB-1GB 2GB-3GB      !icpu_adr_i[30]
1292
// cache inhibited 1GB-2GB 3GB-4GB      icpu_adr_i[30]
1293
// cache inhibited 2GB-4GB (default)    icpu_adr_i[31]
1294
// cached 0GB-4GB                       1'b0
1295
//
1296
`define OR1200_IMMU_CI                  1'b0
1297
 
1298
 
1299
/////////////////////////////////////////////////
1300
//
1301
// Insn cache (IC)
1302
//
1303
 
1304
// 3 for 8 bytes, 4 for 16 bytes etc
1305
`define OR1200_ICLS             4
1306
 
1307
//
1308
// IC configurations
1309
//
1310
`ifdef OR1200_IC_1W_512B
1311
`define OR1200_ICSIZE   9     // 512
1312
`define OR1200_ICINDX   `OR1200_ICSIZE-2 // 7
1313
`define OR1200_ICINDXH  `OR1200_ICSIZE-1 // 8
1314
`define OR1200_ICTAGL   `OR1200_ICINDXH+1 // 9
1315
`define OR1200_ICTAG    `OR1200_ICSIZE-`OR1200_ICLS // 5
1316
`define OR1200_ICTAG_W  24
1317
`endif
1318
`ifdef OR1200_IC_1W_4KB
1319
`define OR1200_ICSIZE                   12                      // 4096
1320
`define OR1200_ICINDX                   `OR1200_ICSIZE-2        // 10
1321
`define OR1200_ICINDXH                  `OR1200_ICSIZE-1        // 11
1322
`define OR1200_ICTAGL                   `OR1200_ICINDXH+1       // 12
1323
`define OR1200_ICTAG                    `OR1200_ICSIZE-`OR1200_ICLS     // 8
1324
`define OR1200_ICTAG_W                  21
1325
`endif
1326
`ifdef OR1200_IC_1W_8KB
1327
`define OR1200_ICSIZE                   13                      // 8192
1328
`define OR1200_ICINDX                   `OR1200_ICSIZE-2        // 11
1329
`define OR1200_ICINDXH                  `OR1200_ICSIZE-1        // 12
1330
`define OR1200_ICTAGL                   `OR1200_ICINDXH+1       // 13
1331
`define OR1200_ICTAG                    `OR1200_ICSIZE-`OR1200_ICLS     // 9
1332
`define OR1200_ICTAG_W                  20
1333
`endif
1334
 
1335
 
1336
/////////////////////////////////////////////////
1337
//
1338
// Data cache (DC)
1339
//
1340
 
1341
// 3 for 8 bytes, 4 for 16 bytes etc
1342
`define OR1200_DCLS             4
1343
 
1344
// Define to perform store refill (potential performance penalty)
1345
// `define OR1200_DC_STORE_REFILL
1346
 
1347
//
1348
// DC configurations
1349
//
1350
`ifdef OR1200_DC_1W_4KB
1351
`define OR1200_DCSIZE                   12                      // 4096
1352
`define OR1200_DCINDX                   `OR1200_DCSIZE-2        // 10
1353
`define OR1200_DCINDXH                  `OR1200_DCSIZE-1        // 11
1354
`define OR1200_DCTAGL                   `OR1200_DCINDXH+1       // 12
1355
`define OR1200_DCTAG                    `OR1200_DCSIZE-`OR1200_DCLS     // 8
1356
`define OR1200_DCTAG_W                  21
1357
`endif
1358
`ifdef OR1200_DC_1W_8KB
1359
`define OR1200_DCSIZE                   13                      // 8192
1360
`define OR1200_DCINDX                   `OR1200_DCSIZE-2        // 11
1361
`define OR1200_DCINDXH                  `OR1200_DCSIZE-1        // 12
1362
`define OR1200_DCTAGL                   `OR1200_DCINDXH+1       // 13
1363
`define OR1200_DCTAG                    `OR1200_DCSIZE-`OR1200_DCLS     // 9
1364
`define OR1200_DCTAG_W                  20
1365
`endif
1366
 
1367
/////////////////////////////////////////////////
1368
//
1369
// Store buffer (SB)
1370
//
1371
 
1372
//
1373
// Store buffer
1374
//
1375
// It will improve performance by "caching" CPU stores
1376
// using store buffer. This is most important for function
1377
// prologues because DC can only work in write though mode
1378
// and all stores would have to complete external WB writes
1379
// to memory.
1380
// Store buffer is between DC and data BIU.
1381
// All stores will be stored into store buffer and immediately
1382
// completed by the CPU, even though actual external writes
1383
// will be performed later. As a consequence store buffer masks
1384
// all data bus errors related to stores (data bus errors
1385
// related to loads are delivered normally).
1386
// All pending CPU loads will wait until store buffer is empty to
1387
// ensure strict memory model. Right now this is necessary because
1388
// we don't make destinction between cached and cache inhibited
1389
// address space, so we simply empty store buffer until loads
1390
// can begin.
1391
//
1392
// It makes design a bit bigger, depending what is the number of
1393
// entries in SB FIFO. Number of entries can be changed further
1394
// down.
1395
//
1396
//`define OR1200_SB_IMPLEMENTED
1397
 
1398
//
1399
// Number of store buffer entries
1400
//
1401
// Verified number of entries are 4 and 8 entries
1402
// (2 and 3 for OR1200_SB_LOG). OR1200_SB_ENTRIES must
1403
// always match 2**OR1200_SB_LOG.
1404
// To disable store buffer, undefine
1405
// OR1200_SB_IMPLEMENTED.
1406
//
1407
`define OR1200_SB_LOG           2       // 2 or 3
1408
`define OR1200_SB_ENTRIES       4       // 4 or 8
1409
 
1410
 
1411
/////////////////////////////////////////////////
1412
//
1413
// Quick Embedded Memory (QMEM)
1414
//
1415
 
1416
//
1417
// Quick Embedded Memory
1418
//
1419
// Instantiation of dedicated insn/data memory (RAM or ROM).
1420
// Insn fetch has effective throughput 1insn / clock cycle.
1421
// Data load takes two clock cycles / access, data store
1422
// takes 1 clock cycle / access (if there is no insn fetch)).
1423
// Memory instantiation is shared between insn and data,
1424
// meaning if insn fetch are performed, data load/store
1425
// performance will be lower.
1426
//
1427
// Main reason for QMEM is to put some time critical functions
1428
// into this memory and to have predictable and fast access
1429
// to these functions. (soft fpu, context switch, exception
1430
// handlers, stack, etc)
1431
//
1432
// It makes design a bit bigger and slower. QMEM sits behind
1433
// IMMU/DMMU so all addresses are physical (so the MMUs can be
1434
// used with QMEM and QMEM is seen by the CPU just like any other
1435
// memory in the system). IC/DC are sitting behind QMEM so the
1436
// whole design timing might be worse with QMEM implemented.
1437
//
1438
//`define OR1200_QMEM_IMPLEMENTED
1439
 
1440
//
1441
// Base address and mask of QMEM
1442
//
1443
// Base address defines first address of QMEM. Mask defines
1444
// QMEM range in address space. Actual size of QMEM is however
1445
// determined with instantiated RAM/ROM. However bigger
1446
// mask will reserve more address space for QMEM, but also
1447
// make design faster, while more tight mask will take
1448
// less address space but also make design slower. If
1449
// instantiated RAM/ROM is smaller than space reserved with
1450
// the mask, instatiated RAM/ROM will also be shadowed
1451
// at higher addresses in reserved space.
1452
//
1453
`define OR1200_QMEM_IADDR       32'h0080_0000
1454
`define OR1200_QMEM_IMASK       32'hfff0_0000   // Max QMEM size 1MB
1455
`define OR1200_QMEM_DADDR  32'h0080_0000
1456
`define OR1200_QMEM_DMASK  32'hfff0_0000 // Max QMEM size 1MB
1457
 
1458
//
1459
// QMEM interface byte-select capability
1460
//
1461
// To enable qmem_sel* ports, define this macro.
1462
//
1463
//`define OR1200_QMEM_BSEL
1464
 
1465
//
1466
// QMEM interface acknowledge
1467
//
1468
// To enable qmem_ack port, define this macro.
1469
//
1470
//`define OR1200_QMEM_ACK
1471
 
1472
/////////////////////////////////////////////////////
1473
//
1474
// VR, UPR and Configuration Registers
1475
//
1476
//
1477
// VR, UPR and configuration registers are optional. If 
1478
// implemented, operating system can automatically figure
1479
// out how to use the processor because it knows 
1480
// what units are available in the processor and how they
1481
// are configured.
1482
//
1483
// This section must be last in or1200_defines.v file so
1484
// that all units are already configured and thus
1485
// configuration registers are properly set.
1486
// 
1487
 
1488
// Define if you want configuration registers implemented
1489
`define OR1200_CFGR_IMPLEMENTED
1490
 
1491
// Define if you want full address decode inside SYS group
1492
`define OR1200_SYS_FULL_DECODE
1493
 
1494
// Offsets of VR, UPR and CFGR registers
1495
`define OR1200_SPRGRP_SYS_VR            4'h0
1496
`define OR1200_SPRGRP_SYS_UPR           4'h1
1497
`define OR1200_SPRGRP_SYS_CPUCFGR       4'h2
1498
`define OR1200_SPRGRP_SYS_DMMUCFGR      4'h3
1499
`define OR1200_SPRGRP_SYS_IMMUCFGR      4'h4
1500
`define OR1200_SPRGRP_SYS_DCCFGR        4'h5
1501
`define OR1200_SPRGRP_SYS_ICCFGR        4'h6
1502
`define OR1200_SPRGRP_SYS_DCFGR 4'h7
1503
 
1504
// VR fields
1505
`define OR1200_VR_REV_BITS              5:0
1506
`define OR1200_VR_RES1_BITS             15:6
1507
`define OR1200_VR_CFG_BITS              23:16
1508
`define OR1200_VR_VER_BITS              31:24
1509
 
1510
// VR values
1511
`define OR1200_VR_REV                   6'h01
1512
`define OR1200_VR_RES1                  10'h000
1513
`define OR1200_VR_CFG                   8'h00
1514
`define OR1200_VR_VER                   8'h12
1515
 
1516
// UPR fields
1517
`define OR1200_UPR_UP_BITS              0
1518
`define OR1200_UPR_DCP_BITS             1
1519
`define OR1200_UPR_ICP_BITS             2
1520
`define OR1200_UPR_DMP_BITS             3
1521
`define OR1200_UPR_IMP_BITS             4
1522
`define OR1200_UPR_MP_BITS              5
1523
`define OR1200_UPR_DUP_BITS             6
1524
`define OR1200_UPR_PCUP_BITS            7
1525
`define OR1200_UPR_PMP_BITS             8
1526
`define OR1200_UPR_PICP_BITS            9
1527
`define OR1200_UPR_TTP_BITS             10
1528
`define OR1200_UPR_RES1_BITS            23:11
1529
`define OR1200_UPR_CUP_BITS             31:24
1530
 
1531
// UPR values
1532
`define OR1200_UPR_UP                   1'b1
1533
`ifdef OR1200_NO_DC
1534
`define OR1200_UPR_DCP                  1'b0
1535
`else
1536
`define OR1200_UPR_DCP                  1'b1
1537
`endif
1538
`ifdef OR1200_NO_IC
1539
`define OR1200_UPR_ICP                  1'b0
1540
`else
1541
`define OR1200_UPR_ICP                  1'b1
1542
`endif
1543
`ifdef OR1200_NO_DMMU
1544
`define OR1200_UPR_DMP                  1'b0
1545
`else
1546
`define OR1200_UPR_DMP                  1'b1
1547
`endif
1548
`ifdef OR1200_NO_IMMU
1549
`define OR1200_UPR_IMP                  1'b0
1550
`else
1551
`define OR1200_UPR_IMP                  1'b1
1552
`endif
1553
`define OR1200_UPR_MP                   1'b1    // MAC always present
1554
`ifdef OR1200_DU_IMPLEMENTED
1555
`define OR1200_UPR_DUP                  1'b1
1556
`else
1557
`define OR1200_UPR_DUP                  1'b0
1558
`endif
1559
`define OR1200_UPR_PCUP                 1'b0    // Performance counters not present
1560
`ifdef OR1200_DU_IMPLEMENTED
1561
`define OR1200_UPR_PMP                  1'b1
1562
`else
1563
`define OR1200_UPR_PMP                  1'b0
1564
`endif
1565
`ifdef OR1200_DU_IMPLEMENTED
1566
`define OR1200_UPR_PICP                 1'b1
1567
`else
1568
`define OR1200_UPR_PICP                 1'b0
1569
`endif
1570
`ifdef OR1200_DU_IMPLEMENTED
1571
`define OR1200_UPR_TTP                  1'b1
1572
`else
1573
`define OR1200_UPR_TTP                  1'b0
1574
`endif
1575
`define OR1200_UPR_RES1                 13'h0000
1576
`define OR1200_UPR_CUP                  8'h00
1577
 
1578
// CPUCFGR fields
1579
`define OR1200_CPUCFGR_NSGF_BITS        3:0
1580
`define OR1200_CPUCFGR_HGF_BITS 4
1581
`define OR1200_CPUCFGR_OB32S_BITS       5
1582
`define OR1200_CPUCFGR_OB64S_BITS       6
1583
`define OR1200_CPUCFGR_OF32S_BITS       7
1584
`define OR1200_CPUCFGR_OF64S_BITS       8
1585
`define OR1200_CPUCFGR_OV64S_BITS       9
1586
`define OR1200_CPUCFGR_RES1_BITS        31:10
1587
 
1588
// CPUCFGR values
1589
`define OR1200_CPUCFGR_NSGF             4'h0
1590
`define OR1200_CPUCFGR_HGF              1'b0
1591
`define OR1200_CPUCFGR_OB32S            1'b1
1592
`define OR1200_CPUCFGR_OB64S            1'b0
1593
`define OR1200_CPUCFGR_OF32S            1'b0
1594
`define OR1200_CPUCFGR_OF64S            1'b0
1595
`define OR1200_CPUCFGR_OV64S            1'b0
1596
`define OR1200_CPUCFGR_RES1             22'h000000
1597
 
1598
// DMMUCFGR fields
1599
`define OR1200_DMMUCFGR_NTW_BITS        1:0
1600
`define OR1200_DMMUCFGR_NTS_BITS        4:2
1601
`define OR1200_DMMUCFGR_NAE_BITS        7:5
1602
`define OR1200_DMMUCFGR_CRI_BITS        8
1603
`define OR1200_DMMUCFGR_PRI_BITS        9
1604
`define OR1200_DMMUCFGR_TEIRI_BITS      10
1605
`define OR1200_DMMUCFGR_HTR_BITS        11
1606
`define OR1200_DMMUCFGR_RES1_BITS       31:12
1607
 
1608
// DMMUCFGR values
1609
`ifdef OR1200_NO_DMMU
1610
`define OR1200_DMMUCFGR_NTW             2'h0    // Irrelevant
1611
`define OR1200_DMMUCFGR_NTS             3'h0    // Irrelevant
1612
`define OR1200_DMMUCFGR_NAE             3'h0    // Irrelevant
1613
`define OR1200_DMMUCFGR_CRI             1'b0    // Irrelevant
1614
`define OR1200_DMMUCFGR_PRI             1'b0    // Irrelevant
1615
`define OR1200_DMMUCFGR_TEIRI           1'b0    // Irrelevant
1616
`define OR1200_DMMUCFGR_HTR             1'b0    // Irrelevant
1617
`define OR1200_DMMUCFGR_RES1            20'h00000
1618
`else
1619
`define OR1200_DMMUCFGR_NTW             2'h0    // 1 TLB way
1620
`define OR1200_DMMUCFGR_NTS             3'h6 //3'h`OR1200_DTLB_INDXW    // Num TLB sets
1621
`define OR1200_DMMUCFGR_NAE             3'h0    // No ATB entries
1622
`define OR1200_DMMUCFGR_CRI             1'b0    // No control register
1623
`define OR1200_DMMUCFGR_PRI             1'b0    // No protection reg
1624
`define OR1200_DMMUCFGR_TEIRI           1'b1    // TLB entry inv reg impl.
1625
`define OR1200_DMMUCFGR_HTR             1'b0    // No HW TLB reload
1626
`define OR1200_DMMUCFGR_RES1            20'h00000
1627
`endif
1628
 
1629
// IMMUCFGR fields
1630
`define OR1200_IMMUCFGR_NTW_BITS        1:0
1631
`define OR1200_IMMUCFGR_NTS_BITS        4:2
1632
`define OR1200_IMMUCFGR_NAE_BITS        7:5
1633
`define OR1200_IMMUCFGR_CRI_BITS        8
1634
`define OR1200_IMMUCFGR_PRI_BITS        9
1635
`define OR1200_IMMUCFGR_TEIRI_BITS      10
1636
`define OR1200_IMMUCFGR_HTR_BITS        11
1637
`define OR1200_IMMUCFGR_RES1_BITS       31:12
1638
 
1639
// IMMUCFGR values
1640
`ifdef OR1200_NO_IMMU
1641
`define OR1200_IMMUCFGR_NTW             2'h0    // Irrelevant
1642
`define OR1200_IMMUCFGR_NTS             3'h0    // Irrelevant
1643
`define OR1200_IMMUCFGR_NAE             3'h0    // Irrelevant
1644
`define OR1200_IMMUCFGR_CRI             1'b0    // Irrelevant
1645
`define OR1200_IMMUCFGR_PRI             1'b0    // Irrelevant
1646
`define OR1200_IMMUCFGR_TEIRI           1'b0    // Irrelevant
1647
`define OR1200_IMMUCFGR_HTR             1'b0    // Irrelevant
1648
`define OR1200_IMMUCFGR_RES1            20'h00000
1649
`else
1650
`define OR1200_IMMUCFGR_NTW             2'h0    // 1 TLB way
1651
`define OR1200_IMMUCFGR_NTS             3'h6 //3'h`OR1200_ITLB_INDXW    // Num TLB sets
1652
`define OR1200_IMMUCFGR_NAE             3'h0    // No ATB entry
1653
`define OR1200_IMMUCFGR_CRI             1'b0    // No control reg
1654
`define OR1200_IMMUCFGR_PRI             1'b0    // No protection reg
1655
`define OR1200_IMMUCFGR_TEIRI           1'b1    // TLB entry inv reg impl
1656
`define OR1200_IMMUCFGR_HTR             1'b0    // No HW TLB reload
1657
`define OR1200_IMMUCFGR_RES1            20'h00000
1658
`endif
1659
 
1660
// DCCFGR fields
1661
`define OR1200_DCCFGR_NCW_BITS          2:0
1662
`define OR1200_DCCFGR_NCS_BITS          6:3
1663
`define OR1200_DCCFGR_CBS_BITS          7
1664
`define OR1200_DCCFGR_CWS_BITS          8
1665
`define OR1200_DCCFGR_CCRI_BITS         9
1666
`define OR1200_DCCFGR_CBIRI_BITS        10
1667
`define OR1200_DCCFGR_CBPRI_BITS        11
1668
`define OR1200_DCCFGR_CBLRI_BITS        12
1669
`define OR1200_DCCFGR_CBFRI_BITS        13
1670
`define OR1200_DCCFGR_CBWBRI_BITS       14
1671
`define OR1200_DCCFGR_RES1_BITS 31:15
1672
 
1673
// DCCFGR values
1674
`ifdef OR1200_NO_DC
1675
`define OR1200_DCCFGR_NCW               3'h0    // Irrelevant
1676
`define OR1200_DCCFGR_NCS               4'h0    // Irrelevant
1677
`define OR1200_DCCFGR_CBS               1'b0    // Irrelevant
1678
`define OR1200_DCCFGR_CWS               1'b0    // Irrelevant
1679
`define OR1200_DCCFGR_CCRI              1'b1    // Irrelevant
1680
`define OR1200_DCCFGR_CBIRI             1'b1    // Irrelevant
1681
`define OR1200_DCCFGR_CBPRI             1'b0    // Irrelevant
1682
`define OR1200_DCCFGR_CBLRI             1'b0    // Irrelevant
1683
`define OR1200_DCCFGR_CBFRI             1'b1    // Irrelevant
1684
`define OR1200_DCCFGR_CBWBRI            1'b0    // Irrelevant
1685
`define OR1200_DCCFGR_RES1              17'h00000
1686
`else
1687
`define OR1200_DCCFGR_NCW               3'h0    // 1 cache way
1688
`define OR1200_DCCFGR_NCS (`OR1200_DCTAG)       // Num cache sets
1689
`define OR1200_DCCFGR_CBS (`OR1200_DCLS-4)      // 16 byte cache block
1690
`define OR1200_DCCFGR_CWS               1'b0    // Write-through strategy
1691
`define OR1200_DCCFGR_CCRI              1'b1    // Cache control reg impl.
1692
`define OR1200_DCCFGR_CBIRI             1'b1    // Cache block inv reg impl.
1693
`define OR1200_DCCFGR_CBPRI             1'b0    // Cache block prefetch reg not impl.
1694
`define OR1200_DCCFGR_CBLRI             1'b0    // Cache block lock reg not impl.
1695
`define OR1200_DCCFGR_CBFRI             1'b1    // Cache block flush reg impl.
1696
`define OR1200_DCCFGR_CBWBRI            1'b0    // Cache block WB reg not impl.
1697
`define OR1200_DCCFGR_RES1              17'h00000
1698
`endif
1699
 
1700
// ICCFGR fields
1701
`define OR1200_ICCFGR_NCW_BITS          2:0
1702
`define OR1200_ICCFGR_NCS_BITS          6:3
1703
`define OR1200_ICCFGR_CBS_BITS          7
1704
`define OR1200_ICCFGR_CWS_BITS          8
1705
`define OR1200_ICCFGR_CCRI_BITS         9
1706
`define OR1200_ICCFGR_CBIRI_BITS        10
1707
`define OR1200_ICCFGR_CBPRI_BITS        11
1708
`define OR1200_ICCFGR_CBLRI_BITS        12
1709
`define OR1200_ICCFGR_CBFRI_BITS        13
1710
`define OR1200_ICCFGR_CBWBRI_BITS       14
1711
`define OR1200_ICCFGR_RES1_BITS 31:15
1712
 
1713
// ICCFGR values
1714
`ifdef OR1200_NO_IC
1715
`define OR1200_ICCFGR_NCW               3'h0    // Irrelevant
1716
`define OR1200_ICCFGR_NCS               4'h0    // Irrelevant
1717
`define OR1200_ICCFGR_CBS               1'b0    // Irrelevant
1718
`define OR1200_ICCFGR_CWS               1'b0    // Irrelevant
1719
`define OR1200_ICCFGR_CCRI              1'b0    // Irrelevant
1720
`define OR1200_ICCFGR_CBIRI             1'b0    // Irrelevant
1721
`define OR1200_ICCFGR_CBPRI             1'b0    // Irrelevant
1722
`define OR1200_ICCFGR_CBLRI             1'b0    // Irrelevant
1723
`define OR1200_ICCFGR_CBFRI             1'b0    // Irrelevant
1724
`define OR1200_ICCFGR_CBWBRI            1'b0    // Irrelevant
1725
`define OR1200_ICCFGR_RES1              17'h00000
1726
`else
1727
`define OR1200_ICCFGR_NCW               3'h0    // 1 cache way
1728
`define OR1200_ICCFGR_NCS (`OR1200_ICTAG)       // Num cache sets
1729
`define OR1200_ICCFGR_CBS (`OR1200_ICLS-4)      // 16 byte cache block
1730
`define OR1200_ICCFGR_CWS               1'b0    // Irrelevant
1731
`define OR1200_ICCFGR_CCRI              1'b1    // Cache control reg impl.
1732
`define OR1200_ICCFGR_CBIRI             1'b1    // Cache block inv reg impl.
1733
`define OR1200_ICCFGR_CBPRI             1'b0    // Cache block prefetch reg not impl.
1734
`define OR1200_ICCFGR_CBLRI             1'b0    // Cache block lock reg not impl.
1735
`define OR1200_ICCFGR_CBFRI             1'b1    // Cache block flush reg impl.
1736
`define OR1200_ICCFGR_CBWBRI            1'b0    // Irrelevant
1737
`define OR1200_ICCFGR_RES1              17'h00000
1738
`endif
1739
 
1740
// DCFGR fields
1741
`define OR1200_DCFGR_NDP_BITS           2:0
1742
`define OR1200_DCFGR_WPCI_BITS          3
1743
`define OR1200_DCFGR_RES1_BITS          31:4
1744
 
1745
// DCFGR values
1746
`ifdef OR1200_DU_HWBKPTS
1747
`define OR1200_DCFGR_NDP        3'h`OR1200_DU_DVRDCR_PAIRS // # of DVR/DCR pairs
1748
`ifdef OR1200_DU_DWCR0
1749
`define OR1200_DCFGR_WPCI               1'b1
1750
`else
1751
`define OR1200_DCFGR_WPCI               1'b0    // WP counters not impl.
1752
`endif
1753
`else
1754
`define OR1200_DCFGR_NDP                3'h0    // Zero DVR/DCR pairs
1755
`define OR1200_DCFGR_WPCI               1'b0    // WP counters not impl.
1756
`endif
1757
`define OR1200_DCFGR_RES1               28'h0000000
1758
 

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.