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[/] [ax8/] [trunk/] [sw/] [xrom.cpp] - Blame information for rev 31

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1 14 jesus
//
2
// Xilinx VHDL ROM generator
3
//
4 30 jesus
// Version : 0244
5 14 jesus
//
6
// Copyright (c) 2001-2002 Daniel Wallner (jesus@opencores.org)
7
//
8
// All rights reserved
9
//
10
// Redistribution and use in source and binary forms, with or without
11
// modification, are permitted provided that the following conditions are met:
12
//
13
// Redistributions of source code must retain the above copyright notice,
14
// this list of conditions and the following disclaimer.
15
//
16
// Redistributions in binary form must reproduce the above copyright
17
// notice, this list of conditions and the following disclaimer in the
18
// documentation and/or other materials provided with the distribution.
19
//
20
// Neither the name of the author nor the names of other contributors may
21
// be used to endorse or promote products derived from this software without
22
// specific prior written permission.
23
//
24
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE
28
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34
// POSSIBILITY OF SUCH DAMAGE.
35
//
36
// Please report bugs to the author, but before you do so, please
37
// make sure that this is not a derivative work and that
38
// you have the latest version of this file.
39
//
40
// The latest version of this file can be found at:
41
//      http://www.opencores.org/cvsweb.shtml/t51/
42
//
43
// Limitations :
44
//      Not all address/data widths produce working code
45
//      Requires stl to compile
46
//
47
// File history :
48
//
49
// 0220 : Initial release
50
//
51 18 jesus
// 0221 : Fixed block ROMs with partial bytes
52 27 jesus
//
53
// 0241 : Updated for WebPack 5.1
54 30 jesus
//
55
// 0244 : Added -n option and component declaration
56
//
57 14 jesus
 
58
#include <stdio.h>
59
#include <string>
60
#include <vector>
61
#include <iostream>
62
 
63
using namespace std;
64
 
65
#if !(defined(max)) && _MSC_VER
66
        // VC fix
67
        #define max __max
68
#endif
69
 
70
int main (int argc, char *argv[])
71
{
72 30 jesus
        cerr << "Xilinx VHDL ROM generator by Daniel Wallner. Version 0244\n";
73 14 jesus
 
74
        try
75
        {
76
                unsigned long aWidth;
77
                unsigned long dWidth;
78
                unsigned long select = 0;
79 30 jesus
                unsigned long length = 0;
80 14 jesus
                char z = 0;
81
 
82
                if (argc < 4)
83
                {
84
                        cerr << "\nUsage: xrom <entity name> <address bits> <data bits> <options>\n";
85
                        cerr << "\nThe options can be:\n";
86 28 jesus
                        cerr << "  -[decimal number] = SelectRAM usage in 1/16 parts\n";
87 14 jesus
                        cerr << "  -z = use tri-state buses\n";
88 30 jesus
                        cerr << "  -n [decimal size] = limit rom size\n";
89 14 jesus
                        cerr << "\nExample:\n";
90
                        cerr << "  xrom Test_ROM 13 8 -6\n\n";
91
                        return -1;
92
                }
93
 
94
                int result;
95
 
96
                result = sscanf(argv[2], "%lu", &aWidth);
97
                if (result < 1)
98
                {
99
                        throw "Error in address bits argument!\n";
100
                }
101
 
102
                result = sscanf(argv[3], "%lu", &dWidth);
103
                if (result < 1)
104
                {
105
                        throw "Error in data bits argument!\n";
106
                }
107
 
108 30 jesus
                int argument = 4;
109
 
110
                while (argument < argc)
111 14 jesus
                {
112 30 jesus
                        char tmpC = 0;
113
                        unsigned long tmpL = 0;
114
 
115
                        result = sscanf(argv[argument], "%c%lu", &tmpC, &tmpL);
116
                        if (result < 1 || tmpC != '-' )
117 14 jesus
                        {
118
                                throw "Error in options!\n";
119
                        }
120 30 jesus
 
121 14 jesus
                        if (result < 2)
122
                        {
123 30 jesus
                                sscanf(argv[argument], "%c%c", &tmpC, &tmpC);
124
                                if (tmpC != 'z' && tmpC != 'n')
125 14 jesus
                                {
126 30 jesus
                                        throw "Unkown option!\n";
127 14 jesus
                                }
128 30 jesus
                                if (tmpC == 'z')
129
                                {
130
                                        z = tmpC;
131
                                }
132
                                else
133
                                {
134
                                        argument++;
135 14 jesus
 
136 30 jesus
                                        if (argument == argc)
137
                                        {
138
                                                throw "No memory size argument!\n";
139
                                        }
140
 
141
                                        result = sscanf(argv[argument], "%lu", &tmpL);
142
                                        if (!result)
143
                                        {
144
                                                throw "Memory size not a number!\n";
145
                                        }
146
                                        length = tmpL;
147
                                }
148 14 jesus
                        }
149 30 jesus
                        else
150 14 jesus
                        {
151 30 jesus
                                select = tmpL;
152 14 jesus
                        }
153 30 jesus
                        argument++;
154 14 jesus
                }
155
 
156
                unsigned long selectIter = 0;
157
                unsigned long blockIter = 0;
158
                unsigned long bytes = (dWidth + 7) / 8;
159
 
160
                if (!select)
161
                {
162
                        blockIter = ((1UL << aWidth) + 511) / 512;
163 30 jesus
                        if (length && length < blockIter * 512)
164
                        {
165
                                blockIter = (length + 511) / 512;
166
                        }
167 14 jesus
                }
168
                else if (select == 16)
169
                {
170
                        selectIter = ((1UL << aWidth) + 15) / 16;
171 30 jesus
                        if (length && length < selectIter * 16)
172
                        {
173
                                selectIter = (length + 15) / 16;
174
                        }
175 14 jesus
                }
176
                else
177
                {
178
                        blockIter = ((1UL << aWidth) * (16 - select) / 16 + 511) / 512;
179
                        selectIter = ((1UL << aWidth) - blockIter * 512 + 15) / 16;
180
                }
181
 
182
                unsigned long blockTotal = ((1UL << aWidth) + 511) / 512;
183 30 jesus
                if (length && length < blockTotal * 512)
184
                {
185
                        blockTotal = (length + 511) / 512;
186
                }
187 14 jesus
 
188 30 jesus
                if (length)
189
                {
190
                        if (length > selectIter * 16)
191
                        {
192
                                blockIter -= ((1UL << aWidth) + 511) / 512 - blockTotal;
193
                        }
194
                        else
195
                        {
196
                                blockIter = 0;
197
                        }
198
                }
199
                if (length && !blockIter && length < selectIter * 16)
200
                {
201
                        selectIter = (length + 15) / 16;
202
                }
203
 
204
                cerr << "Creating ROM with " << selectIter * bytes;
205
                cerr << " RAM16X1S and "  << blockIter * bytes << " RAMB4_S8\n";
206
 
207 14 jesus
                printf("-- This file was generated with xrom written by Daniel Wallner\n");
208
                printf("\nlibrary IEEE;");
209
                printf("\nuse IEEE.std_logic_1164.all;");
210
                printf("\nuse IEEE.numeric_std.all;");
211
                printf("\n\nentity %s is", argv[1]);
212
                printf("\n\tport(");
213
                printf("\n\t\tClk\t: in std_logic;");
214
                printf("\n\t\tA\t: in std_logic_vector(%d downto 0);", aWidth - 1);
215
                printf("\n\t\tD\t: out std_logic_vector(%d downto 0)", dWidth - 1);
216
                printf("\n\t);");
217
                printf("\nend %s;", argv[1]);
218
                printf("\n\narchitecture rtl of %s is", argv[1]);
219
 
220 30 jesus
                if (selectIter)
221
                {
222
                        printf("\n\tcomponent RAM16X1S");
223
                        printf("\n\t\tport(");
224
                        printf("\n\t\t\tO    : out std_ulogic;");
225
                        printf("\n\t\t\tA0   : in std_ulogic;");
226
                        printf("\n\t\t\tA1   : in std_ulogic;");
227
                        printf("\n\t\t\tA2   : in std_ulogic;");
228
                        printf("\n\t\t\tA3   : in std_ulogic;");
229
                        printf("\n\t\t\tD    : in std_ulogic;");
230
                        printf("\n\t\t\tWCLK : in std_ulogic;");
231
                        printf("\n\t\t\tWE   : in std_ulogic);");
232
                        printf("\n\tend component;\n");
233
                }
234
                if (blockIter)
235
                {
236
                        printf("\n\tcomponent RAMB4_S8");
237
                        printf("\n\t\tport(");
238
                        printf("\n\t\t\tDO     : out std_logic_vector(7 downto 0);");
239
                        printf("\n\t\t\tADDR   : in std_logic_vector(8 downto 0);");
240
                        printf("\n\t\t\tCLK    : in std_ulogic;");
241
                        printf("\n\t\t\tDI     : in std_logic_vector(7 downto 0);");
242
                        printf("\n\t\t\tEN     : in std_ulogic;");
243
                        printf("\n\t\t\tRST    : in std_ulogic;");
244
                        printf("\n\t\t\tWE     : in std_ulogic);");
245
                        printf("\n\tend component;\n");
246
                }
247
 
248 14 jesus
                if (selectIter > 0)
249
                {
250
                        printf("\n\tsignal A_r: unsigned(A'range);");
251
                }
252
                if (selectIter > 1)
253
                {
254
                        printf("\n\ttype sRAMOut_a is array(0 to %d) of std_logic_vector(D'range);", selectIter - 1);
255
                        printf("\n\tsignal sRAMOut : sRAMOut_a;");
256
                        printf("\n\tsignal siA_r : integer;");
257
                }
258
                if (selectIter && blockIter)
259
                {
260
                        printf("\n\tsignal sD : std_logic_vector(D'range);");
261
                }
262 18 jesus
                if (blockIter == 1)
263
                {
264
                        printf("\n\tsignal bRAMOut : std_logic_vector(%d downto 0);", bytes * 8 - 1);
265
                }
266 14 jesus
                if (blockIter > 1)
267
                {
268 18 jesus
                        printf("\n\ttype bRAMOut_a is array(%d to %d) of std_logic_vector(%d downto 0);", blockTotal - blockIter, blockTotal - 1, bytes * 8 - 1);
269 14 jesus
                        printf("\n\tsignal bRAMOut : bRAMOut_a;");
270
                        printf("\n\tsignal biA_r : integer;");
271
                        if (!selectIter)
272
                        {
273
                                printf("\n\tsignal A_r : unsigned(A'left downto 9);");
274
                        }
275
                }
276
                if (selectIter && blockIter)
277
                {
278
                        printf("\n\tsignal bD : std_logic_vector(D'range);");
279
                }
280
 
281
                printf("\nbegin");
282
 
283
                if (selectIter > 0 || blockIter > 1)
284
                {
285
                        printf("\n\tprocess (Clk)");
286
                        printf("\n\tbegin");
287
                        printf("\n\t\tif Clk'event and Clk = '1' then");
288
                        if (!selectIter)
289
                        {
290
                                printf("\n\t\t\tA_r <= unsigned(A(A'left downto 9));");
291
                        }
292
                        else
293
                        {
294
                                printf("\n\t\t\tA_r <= unsigned(A);");
295
                        }
296
                        printf("\n\t\tend if;");
297
                        printf("\n\tend process;");
298
                }
299
 
300
                if (selectIter == 1)
301
                {
302
                        printf("\n\n\tsG1: for I in 0 to %d generate", dWidth - 1);
303 30 jesus
                        printf("\n\t\tS%s : RAM16X1S\n\t\t\tport map (", argv[1]);
304 14 jesus
                        if (blockIter)
305
                        {
306
                                printf("s");
307
                        }
308 27 jesus
                        printf("WE => '0', WCLK => '0', D => '0', O => D(I), A0 => A_r(0), A1 => A_r(1), A2 => A_r(2), A3 => A_r(3));");
309 14 jesus
                        printf("\n\tend generate;");
310
                }
311
                if (selectIter > 1)
312
                {
313
                        printf("\n\n\tsiA_r <= to_integer(A_r(A'left downto 4));");
314
                        printf("\n\n\tsG1: for I in 0 to %d generate", selectIter - 1);
315
                        printf("\n\t\tsG2: for J in 0 to %d generate", dWidth - 1);
316 27 jesus
                        printf("\n\t\t\tS%s : RAM16X1S\n\t\t\t\tport map (WE => '0', WCLK => '0', D => '0', O => sRAMOut(I)(J), A0 => A_r(0), A1 => A_r(1), A2 => A_r(2), A3 => A_r(3));", argv[1]);
317 14 jesus
                        printf("\n\t\tend generate;");
318
                        if (z == 'z')
319
                        {
320
                                printf("\n\t\t");
321
                                if (blockIter)
322
                                {
323
                                        printf("s");
324
                                }
325
                                printf("D <= sRAMOut(I) when siA_r = I else (others => 'Z');");
326
                        }
327
                        printf("\n\tend generate;");
328
                        if (z != 'z')
329
                        {
330
                                printf("\n\n\tprocess (siA_r, sRAMOut)\n\tbegin\n\t\t");
331
                                if (blockIter)
332
                                {
333
                                        printf("s");
334
                                }
335
                                printf("D <= sRAMOut(0);");
336
                                printf("\n\t\tfor I in 1 to %d loop", selectIter - 1);
337
                                printf("\n\t\t\tif siA_r = I then\n\t\t\t\t");
338
                                if (blockIter)
339
                                {
340
                                        printf("s");
341
                                }
342
                                printf("D <= sRAMOut(I);\n\t\t\tend if;");
343
                                printf("\n\t\tend loop;\n\tend process;");
344
                        }
345
                }
346
 
347
                if (blockIter == 1)
348
                {
349
                        printf("\n\n\tbG1: for J in 0 to %d generate", bytes - 1);
350 18 jesus
                        printf("\n\t\tB%s : RAMB4_S8", argv[1]);
351 27 jesus
                        printf("\n\t\t\tport map (DI => \"00000000\", EN => '1', RST => '0', WE => '0', CLK => Clk, ADDR => A(8 downto 0), DO => bRAMOut(7 + 8 * J downto 8 * J));", argv[1]);
352 18 jesus
                        printf("\n\tend generate;");
353
                        printf("\n\n\t");
354 14 jesus
                        if (selectIter)
355
                        {
356
                                printf("b");
357
                        }
358 18 jesus
                        printf("D <= bRAMOut(D'range);");
359 14 jesus
                }
360
                if (blockIter > 1)
361
                {
362
                        printf("\n\n\tbiA_r <= to_integer(A_r(A'left downto 9));");
363
                        printf("\n\n\tbG1: for I in %d to %d generate", blockTotal - blockIter, blockTotal - 1);
364
                        printf("\n\t\tbG2: for J in 0 to %d generate", bytes - 1);
365 27 jesus
                        printf("\n\t\t\tB%s : RAMB4_S8\n\t\t\t\tport map (DI => \"00000000\", EN => '1', RST => '0', WE => '0', CLK => Clk, ADDR => A(8 downto 0), DO => bRAMOut(I)(7 + 8 * J downto 8 * J));", argv[1]);
366 14 jesus
                        printf("\n\t\tend generate;");
367
                        if (z == 'z')
368
                        {
369
                                printf("\n\t\t");
370
                                if (selectIter)
371
                                {
372
                                        printf("b");
373
                                }
374
                                printf("D <= bRAMOut(I) when biA_r = I else (others => 'Z');");
375
                        }
376
                        printf("\n\tend generate;");
377
                        if (z != 'z')
378
                        {
379
                                printf("\n\n\tprocess (biA_r, bRAMOut)\n\tbegin\n\t\t");
380
                                if (selectIter)
381
                                {
382
                                        printf("b");
383
                                }
384 18 jesus
                                printf("D <= bRAMOut(%d)(D'range);", blockTotal - blockIter);
385 14 jesus
                                printf("\n\t\tfor I in %d to %d loop", blockTotal - blockIter + 1, blockTotal - 1);
386
                                printf("\n\t\t\tif biA_r = I then\n\t\t\t\t");
387
                                if (selectIter)
388
                                {
389
                                        printf("b");
390
                                }
391 18 jesus
                                printf("D <= bRAMOut(I)(D'range);\n\t\t\tend if;");
392 14 jesus
                                printf("\n\t\tend loop;\n\tend process;");
393
                        }
394
                }
395
 
396
                if (selectIter && blockIter)
397
                {
398
                        printf("\n\n\tD <= bD when A_r(A'left downto 9) >= %d else sD;", blockTotal - blockIter);
399
                }
400
 
401
                printf("\nend;\n");
402
 
403
                return 0;
404
        }
405
        catch (string error)
406
        {
407
                cerr << "Fatal: " << error;
408
        }
409
        catch (const char *error)
410
        {
411
                cerr << "Fatal: " << error;
412
        }
413
        return -1;
414
}

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