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1 | /* | |
2 | * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de> | |
3 | * | |
4 | * (C) Copyright 2000 | |
5 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
6 | * | |
7 | * SPDX-License-Identifier: GPL-2.0 | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Memory Functions | |
12 | * | |
13 | * Copied from FADS ROM, Dan Malek (dmalek@jlc.net) | |
14 | */ | |
15 | ||
16 | #include "common.h" | |
17 | #include <ctype.h> | |
18 | #include <avr/interrupt.h> | |
19 | ||
20 | #include "command.h" | |
21 | #include "cli_readline.h" | |
22 | #include "print-utils.h" | |
23 | #include "con-utils.h" | |
24 | #include "getopt-min.h" | |
25 | #include "eval_arg.h" | |
26 | #include "timer.h" | |
27 | #include "z80-if.h" | |
28 | #include "debug.h" | |
29 | ||
30 | ||
31 | #ifndef CONFIG_SYS_MEMTEST_SCRATCH | |
32 | #define CONFIG_SYS_MEMTEST_SCRATCH 0 | |
33 | #endif | |
34 | ||
35 | /* Display values from last command. | |
36 | * Memory modify remembered values are different from display memory. | |
37 | */ | |
38 | static uint32_t dp_last_addr; | |
39 | static uint32_t dp_last_length = 0x100; | |
40 | static uint32_t mm_last_addr; | |
41 | ||
42 | static uint32_t base_address = 0; | |
43 | ||
44 | /*--------------------------------------------------------------------------*/ | |
45 | ||
46 | int z180_read_buf(uint8_t *buf, uint32_t addr, uint8_t count) | |
47 | { | |
48 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) | |
49 | return -1; | |
50 | ||
51 | z80_read_block (buf, addr, count); | |
52 | z80_bus_cmd(Release); | |
53 | return 0; | |
54 | } | |
55 | ||
56 | /*--------------------------------------------------------------------------*/ | |
57 | ||
58 | /* Memory Display | |
59 | * | |
60 | * Syntax: | |
61 | * md {addr} {len} | |
62 | */ | |
63 | command_ret_t do_mem_md(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
64 | { | |
65 | uint32_t addr, length; | |
66 | ||
67 | (void) cmdtp; | |
68 | ||
69 | #if 0 | |
70 | printf_P(PSTR("flag: %d, argc: %d"), flag, argc); | |
71 | for (int i = 0; i < argc; i++) { | |
72 | printf_P(PSTR(", argv[%d]: %s"), i, argv[i] ? argv[i] : "<NULL>"); | |
73 | } | |
74 | putchar('\n'); | |
75 | #endif | |
76 | ||
77 | /* We use the last specified parameters, unless new ones are | |
78 | * entered. | |
79 | */ | |
80 | addr = dp_last_addr; | |
81 | length = dp_last_length; | |
82 | ||
83 | if (argc < 2) | |
84 | return CMD_RET_USAGE; | |
85 | ||
86 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
87 | /* Address is specified since argc > 1 */ | |
88 | addr = eval_arg(argv[1], NULL); | |
89 | addr += base_address; | |
90 | ||
91 | /* If another parameter, it is the length to display. */ | |
92 | if (argc > 2) | |
93 | length = eval_arg(argv[2], NULL); | |
94 | } | |
95 | ||
96 | /* Print the lines. */ | |
97 | int ret = dump_mem(addr, addr, length, z180_read_buf, NULL); | |
98 | if (ret == -2) { /* TODO: Error codes */ | |
99 | my_puts_P(PSTR("Bus timeout\n")); | |
100 | return CMD_RET_FAILURE; | |
101 | } | |
102 | ||
103 | if (ret >= 0) { | |
104 | dp_last_addr = addr + length; | |
105 | dp_last_length = length; | |
106 | } | |
107 | return CMD_RET_SUCCESS; | |
108 | } | |
109 | ||
110 | /* Modify memory. | |
111 | * | |
112 | * Syntax: | |
113 | * mm {addr} | |
114 | * nm {addr} | |
115 | */ | |
116 | static command_ret_t | |
117 | mod_mem(cmd_tbl_t *cmdtp, int incrflag, uint_fast8_t flag, int argc, char * const argv[]) | |
118 | { | |
119 | uint32_t addr; | |
120 | uint8_t data; | |
121 | int nbytes; | |
122 | ||
123 | (void) cmdtp; | |
124 | ||
125 | if (argc != 2) | |
126 | return CMD_RET_USAGE; | |
127 | ||
128 | /* We use the last specified parameters, unless new ones are | |
129 | * entered. | |
130 | */ | |
131 | addr = mm_last_addr; | |
132 | ||
133 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
134 | /* New command specified. | |
135 | */ | |
136 | ||
137 | /* Address is specified since argc > 1 | |
138 | */ | |
139 | addr = eval_arg(argv[1], NULL); | |
140 | addr += base_address; | |
141 | } | |
142 | ||
143 | /* Print the address, followed by value. Then accept input for | |
144 | * the next value. A non-converted value exits. | |
145 | */ | |
146 | do { | |
147 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
148 | my_puts_P(PSTR("Bus timeout\n")); | |
149 | return CMD_RET_FAILURE; | |
150 | } | |
151 | data = z80_read(addr); | |
152 | z80_bus_cmd(Release); | |
153 | printf_P(PSTR("%05lx: %02x"), addr, data); | |
154 | ||
155 | nbytes = cli_readline(PSTR(" ? "), 0); | |
156 | if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) { | |
157 | /* <CR> pressed as only input, don't modify current | |
158 | * location and move to next. "-" pressed will go back. | |
159 | */ | |
160 | if (incrflag) | |
161 | addr += nbytes ? -1 : 1; | |
162 | nbytes = 1; | |
163 | ||
164 | } else { | |
165 | char *endp; | |
166 | data = eval_arg(console_buffer, &endp); | |
167 | nbytes = endp - console_buffer; | |
168 | if (nbytes) { | |
169 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
170 | my_puts_P(PSTR("Bus timeout\n")); | |
171 | return CMD_RET_FAILURE; | |
172 | } | |
173 | z80_write(addr, data); | |
174 | z80_bus_cmd(Release); | |
175 | if (incrflag) | |
176 | addr++; | |
177 | } | |
178 | } | |
179 | } while (nbytes > 0); | |
180 | ||
181 | mm_last_addr = addr; | |
182 | return CMD_RET_SUCCESS; | |
183 | } | |
184 | ||
185 | ||
186 | command_ret_t do_mem_mm(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
187 | { | |
188 | return mod_mem (cmdtp, 1, flag, argc, argv); | |
189 | } | |
190 | command_ret_t do_mem_nm(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
191 | { | |
192 | return mod_mem (cmdtp, 0, flag, argc, argv); | |
193 | } | |
194 | ||
195 | command_ret_t do_mem_mw(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
196 | { | |
197 | uint32_t writeval; | |
198 | uint32_t addr; | |
199 | uint32_t count = 1; | |
200 | uint_fast8_t width = 1; | |
201 | ||
202 | (void) cmdtp; (void) flag; | |
203 | ||
204 | /* reset getopt() */ | |
205 | optind = 0; | |
206 | ||
207 | int opt; | |
208 | while ((opt = getopt(argc, argv, PSTR("bwl"))) != -1) { | |
209 | switch (opt) { | |
210 | case 'b': | |
211 | width = 1; | |
212 | break; | |
213 | case 'w': | |
214 | width = 2; | |
215 | break; | |
216 | case 'l': | |
217 | width = 4; | |
218 | break; | |
219 | default: /* '?' */ | |
220 | return CMD_RET_USAGE; | |
221 | } | |
222 | } | |
223 | ||
224 | /* remaining arguments */ | |
225 | argc -= optind; | |
226 | if ((argc < 2) || (argc > 3)) | |
227 | return CMD_RET_USAGE; | |
228 | ||
229 | /* Address and value are specified since (adjusted) argc >= 2 */ | |
230 | addr = eval_arg(argv[optind++], NULL); | |
231 | addr += base_address; | |
232 | writeval = eval_arg(argv[optind++], NULL); | |
233 | ||
234 | /* Count ? */ | |
235 | if (argc == 3) | |
236 | count = eval_arg(argv[optind], NULL); | |
237 | ||
238 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
239 | my_puts_P(PSTR("Bus timeout\n")); | |
240 | return CMD_RET_FAILURE; | |
241 | } | |
242 | ||
243 | if (width == 1) | |
244 | z80_memset(addr, writeval, count); | |
245 | else { | |
246 | while (count--) { | |
247 | z80_write_block((const uint8_t *) &writeval, addr, width); | |
248 | addr += width; | |
249 | } | |
250 | } | |
251 | z80_bus_cmd(Release); | |
252 | ||
253 | return CMD_RET_SUCCESS; | |
254 | } | |
255 | ||
256 | #ifdef CONFIG_MX_CYCLIC | |
257 | command_ret_t do_mem_mdc ( cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
258 | { | |
259 | uint32_t count; | |
260 | uint32_t ts; | |
261 | ||
262 | (void) cmdtp; | |
263 | (void) flag; | |
264 | ||
265 | optind = 0; | |
266 | if (argv[0][1] != 'd') { | |
267 | int opt; | |
268 | while ((opt = getopt(argc, argv, PSTR("bwl"))) != -1) | |
269 | if (opt == '?') | |
270 | return CMD_RET_USAGE; | |
271 | --optind; | |
272 | } | |
273 | ||
274 | if (argc-optind != 4) | |
275 | return CMD_RET_USAGE; | |
276 | ||
277 | count = eval_arg(argv[optind + 3], NULL); | |
278 | ||
279 | clear_ctrlc(); /* forget any previous Control C */ | |
280 | for (;;) { | |
281 | ||
282 | if (argv[0][1] == 'd') | |
283 | do_mem_md (NULL, 0, argc-1, argv); /* memory display */ | |
284 | else | |
285 | do_mem_mw (NULL, 0, argc-1, argv); /* memory write */ | |
286 | ||
287 | ||
288 | /* delay for <count> ms... */ | |
289 | ts = get_timer(0); | |
290 | do { | |
291 | /* check for ctrl-c to abort... */ | |
292 | if (had_ctrlc() || ctrlc()) { | |
293 | my_puts_P(PSTR("Abort\n")); | |
294 | return CMD_RET_SUCCESS; | |
295 | } | |
296 | } while (get_timer(ts) < count); | |
297 | } | |
298 | ||
299 | return CMD_RET_SUCCESS; | |
300 | } | |
301 | #endif /* CONFIG_MX_CYCLIC */ | |
302 | ||
303 | command_ret_t do_mem_cmp(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
304 | { | |
305 | uint32_t addr1, addr2, count, ngood; | |
306 | command_ret_t rcode = CMD_RET_SUCCESS; | |
307 | uint8_t byte1, byte2; | |
308 | ||
309 | (void) cmdtp; | |
310 | (void) flag; | |
311 | ||
312 | if (argc != 4) | |
313 | return CMD_RET_USAGE; | |
314 | ||
315 | ||
316 | addr1 = eval_arg(argv[1], NULL); | |
317 | addr1 += base_address; | |
318 | addr2 = eval_arg(argv[2], NULL); | |
319 | addr2 += base_address; | |
320 | count = eval_arg(argv[3], NULL); | |
321 | ||
322 | for (ngood = 0; ngood < count; ++ngood) { | |
323 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
324 | my_puts_P(PSTR("Bus timeout\n")); | |
325 | rcode = CMD_RET_FAILURE; | |
326 | break; | |
327 | } | |
328 | byte1 = z80_read(addr1); | |
329 | byte2 = z80_read(addr2); | |
330 | z80_bus_cmd(Release); | |
331 | if (byte1 != byte2) { | |
332 | printf_P(PSTR("byte at 0x%05lx (%#02x) != " | |
333 | "byte at 0x%05lx (%#02x)\n"), | |
334 | addr1, byte1, addr2, byte2); | |
335 | rcode = CMD_RET_FAILURE; | |
336 | break; | |
337 | } | |
338 | addr1++; | |
339 | addr2++; | |
340 | ||
341 | /* check for ctrl-c to abort... */ | |
342 | if (ctrlc()) { | |
343 | my_puts_P(PSTR("Abort\n")); | |
344 | return CMD_RET_SUCCESS; | |
345 | } | |
346 | } | |
347 | ||
348 | printf_P(PSTR("Total of %ld byte(s) (0x%lx) were the same\n"), ngood, ngood); | |
349 | return rcode; | |
350 | } | |
351 | ||
352 | command_ret_t do_mem_cp(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
353 | { | |
354 | uint32_t src, dest, count; | |
355 | int_fast8_t step; | |
356 | ||
357 | (void) cmdtp; | |
358 | (void) flag; | |
359 | ||
360 | if (argc != 4) | |
361 | return CMD_RET_USAGE; | |
362 | ||
363 | src = eval_arg(argv[1], NULL); | |
364 | src += base_address; | |
365 | dest = eval_arg(argv[2], NULL); | |
366 | dest += base_address; | |
367 | count = eval_arg(argv[3], NULL); | |
368 | ||
369 | if (count == 0) { | |
370 | my_puts_P(PSTR("Zero length?\n")); | |
371 | return CMD_RET_FAILURE; | |
372 | } | |
373 | ||
374 | if (dest > src) { | |
375 | src += count - 1; | |
376 | dest += count - 1; | |
377 | step = -1; | |
378 | } else | |
379 | step = 1; | |
380 | ||
381 | while (count-- > 0) { | |
382 | uint8_t data; | |
383 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
384 | my_puts_P(PSTR("Bus timeout\n")); | |
385 | return CMD_RET_FAILURE; | |
386 | } | |
387 | data = z80_read(src); | |
388 | z80_write(dest, data); | |
389 | z80_bus_cmd(Release); | |
390 | src += step; | |
391 | dest += step; | |
392 | ||
393 | /* check for ctrl-c to abort... */ | |
394 | if (ctrlc()) { | |
395 | my_puts_P(PSTR("Abort\n")); | |
396 | return CMD_RET_SUCCESS; | |
397 | } | |
398 | } | |
399 | return CMD_RET_SUCCESS; | |
400 | } | |
401 | ||
402 | command_ret_t do_mem_base(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, | |
403 | char * const argv[]) | |
404 | { | |
405 | (void) cmdtp; | |
406 | (void) flag; | |
407 | ||
408 | if (argc > 1) { | |
409 | /* Set new base address. */ | |
410 | base_address = eval_arg(argv[1], NULL); | |
411 | } | |
412 | /* Print the current base address. */ | |
413 | printf_P(PSTR("Base Address: 0x%05lx\n"), base_address); | |
414 | return CMD_RET_SUCCESS; | |
415 | } | |
416 | ||
417 | command_ret_t do_mem_loop(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, | |
418 | char * const argv[]) | |
419 | { | |
420 | uint32_t addr, length; | |
421 | ||
422 | (void) cmdtp; | |
423 | (void) flag; | |
424 | ||
425 | if (argc < 3) | |
426 | return CMD_RET_USAGE; | |
427 | ||
428 | /* Address is always specified. */ | |
429 | addr = eval_arg(argv[1], NULL); | |
430 | ||
431 | /* Length is the number of bytes. */ | |
432 | length = eval_arg(argv[2], NULL); | |
433 | ||
434 | ||
435 | /* We want to optimize the loops to run as fast as possible. | |
436 | * If we have only one object, just run infinite loops. | |
437 | */ | |
438 | if (length == 1) { | |
439 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
440 | my_puts_P(PSTR("Bus timeout\n")); | |
441 | return CMD_RET_FAILURE; | |
442 | } | |
443 | cli(); | |
444 | for (;;) | |
445 | z80_read(addr); | |
446 | } | |
447 | ||
448 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
449 | my_puts_P(PSTR("Bus timeout\n")); | |
450 | return CMD_RET_FAILURE; | |
451 | } | |
452 | cli(); | |
453 | for (;;) { | |
454 | uint32_t i = length; | |
455 | uint32_t p = addr; | |
456 | while (i-- > 0) | |
457 | z80_read(p++); | |
458 | } | |
459 | ||
460 | return CMD_RET_SUCCESS; | |
461 | } | |
462 | ||
463 | command_ret_t do_mem_loopw (cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
464 | { | |
465 | uint32_t addr, length; | |
466 | uint8_t data; | |
467 | ||
468 | (void) cmdtp; | |
469 | (void) flag; | |
470 | ||
471 | if (argc < 4) | |
472 | return CMD_RET_USAGE; | |
473 | ||
474 | /* Address is always specified. */ | |
475 | addr = eval_arg(argv[1], NULL); | |
476 | ||
477 | /* Length is the number of bytes. */ | |
478 | length = eval_arg(argv[2], NULL); | |
479 | ||
480 | data = eval_arg(argv[3], NULL); | |
481 | ||
482 | /* | |
483 | * We want to optimize the loops to run as fast as possible. | |
484 | * If we have only one object, just run infinite loops. | |
485 | */ | |
486 | if (length == 1) { | |
487 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
488 | my_puts_P(PSTR("Bus timeout\n")); | |
489 | return CMD_RET_FAILURE; | |
490 | } | |
491 | cli(); | |
492 | for (;;) | |
493 | z80_write(addr, data); | |
494 | } | |
495 | ||
496 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
497 | my_puts_P(PSTR("Bus timeout\n")); | |
498 | return CMD_RET_FAILURE; | |
499 | } | |
500 | cli(); | |
501 | for (;;) { | |
502 | uint32_t i = length; | |
503 | uint32_t p = addr; | |
504 | while (i-- > 0) | |
505 | z80_write(p++, data); | |
506 | } | |
507 | } | |
508 | ||
509 | //#define CONFIG_SYS_ALT_MEMTEST | |
510 | ||
511 | #ifdef CONFIG_CMD_MEMTEST | |
512 | static uint32_t mem_test_alt(uint32_t start_addr, uint32_t end_addr) | |
513 | { | |
514 | uint32_t addr; | |
515 | uint32_t dummy; | |
516 | uint32_t errs = 0; | |
517 | uint32_t offset; | |
518 | uint32_t test_offset; | |
519 | uint8_t pattern; | |
520 | uint8_t anti_pattern; | |
521 | uint8_t temp; | |
522 | uint32_t num_bytes; | |
523 | ||
524 | static const FLASH uint8_t bitpattern[] = { | |
525 | 0x01, /* single bit */ | |
526 | 0x03, /* two adjacent bits */ | |
527 | 0x07, /* three adjacent bits */ | |
528 | 0x0F, /* four adjacent bits */ | |
529 | 0x05, /* two non-adjacent bits */ | |
530 | 0x15, /* three non-adjacent bits */ | |
531 | 0x55, /* four non-adjacent bits */ | |
532 | 0xaa, /* alternating 1/0 */ | |
533 | }; | |
534 | ||
535 | /* | |
536 | * Data line test: write a pattern to the first | |
537 | * location, write the 1's complement to a 'parking' | |
538 | * address (changes the state of the data bus so a | |
539 | * floating bus doesn't give a false OK), and then | |
540 | * read the value back. Note that we read it back | |
541 | * into a variable because the next time we read it, | |
542 | * it might be right (been there, tough to explain to | |
543 | * the quality guys why it prints a failure when the | |
544 | * "is" and "should be" are obviously the same in the | |
545 | * error message). | |
546 | * | |
547 | * Rather than exhaustively testing, we test some | |
548 | * patterns by shifting '1' bits through a field of | |
549 | * '0's and '0' bits through a field of '1's (i.e. | |
550 | * pattern and ~pattern). | |
551 | */ | |
552 | addr = start_addr; | |
553 | dummy = start_addr+1; | |
554 | for (unsigned int j = 0; j < ARRAY_SIZE(bitpattern); j++) { | |
555 | pattern = bitpattern[j]; | |
556 | for (; pattern != 0; pattern <<= 1) { | |
557 | anti_pattern = ~pattern; | |
558 | z80_write(addr, pattern); | |
559 | z80_write(dummy, anti_pattern); /* clear the test data off the bus */ | |
560 | temp = z80_read(addr); | |
561 | if (temp != pattern) { | |
562 | printf_P(PSTR("FAILURE (data line): " | |
563 | "expected %02x, actual %02x\n"), | |
564 | pattern, temp); | |
565 | errs++; | |
566 | } | |
567 | z80_write(addr, anti_pattern); | |
568 | z80_write(dummy, pattern); /* clear the test data off the bus */ | |
569 | temp = z80_read(addr); | |
570 | if (temp != anti_pattern) { | |
571 | printf_P(PSTR("FAILURE (data line): " | |
572 | "Is %02x, should be %02x\n"), | |
573 | temp, anti_pattern); | |
574 | errs++; | |
575 | } | |
576 | } | |
577 | ||
578 | if (ctrlc()) | |
579 | return -1; | |
580 | } | |
581 | ||
582 | if (errs) | |
583 | return errs; | |
584 | ||
585 | /* | |
586 | * Based on code whose Original Author and Copyright | |
587 | * information follows: Copyright (c) 1998 by Michael | |
588 | * Barr. This software is placed into the public | |
589 | * domain and may be used for any purpose. However, | |
590 | * this notice must not be changed or removed and no | |
591 | * warranty is either expressed or implied by its | |
592 | * publication or distribution. | |
593 | */ | |
594 | ||
595 | /* | |
596 | * Address line test | |
597 | ||
598 | * Description: Test the address bus wiring in a | |
599 | * memory region by performing a walking | |
600 | * 1's test on the relevant bits of the | |
601 | * address and checking for aliasing. | |
602 | * This test will find single-bit | |
603 | * address failures such as stuck-high, | |
604 | * stuck-low, and shorted pins. The base | |
605 | * address and size of the region are | |
606 | * selected by the caller. | |
607 | ||
608 | * Notes: For best results, the selected base | |
609 | * address should have enough LSB 0's to | |
610 | * guarantee single address bit changes. | |
611 | * For example, to test a 64-Kbyte | |
612 | * region, select a base address on a | |
613 | * 64-Kbyte boundary. Also, select the | |
614 | * region size as a power-of-two if at | |
615 | * all possible. | |
616 | * | |
617 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
618 | */ | |
619 | ||
620 | num_bytes = (end_addr - start_addr) / sizeof(uint8_t); | |
621 | ||
622 | pattern = 0xaa; | |
623 | anti_pattern = 0x55; | |
624 | ||
625 | // debug("## %s:%d: length = 0x%.5lx\n", __func__, __LINE__, num_bytes); | |
626 | /* | |
627 | * Write the default pattern at each of the | |
628 | * power-of-two offsets. | |
629 | */ | |
630 | for (offset = 1; offset < num_bytes; offset <<= 1) | |
631 | z80_write(addr+offset, pattern); | |
632 | ||
633 | /* | |
634 | * Check for address bits stuck high. | |
635 | */ | |
636 | z80_write(start_addr, anti_pattern); | |
637 | ||
638 | for (offset = 1; offset < num_bytes; offset <<= 1) { | |
639 | temp = z80_read(start_addr + offset); | |
640 | if (temp != pattern) { | |
641 | printf_P(PSTR("FAILURE: Address bit stuck high @ 0x%.5lx:" | |
642 | " expected 0x%.2x, actual 0x%.2x\n"), | |
643 | start_addr + offset, pattern, temp); | |
644 | errs++; | |
645 | if (ctrlc()) | |
646 | return -1; | |
647 | } | |
648 | } | |
649 | z80_write(start_addr, pattern); | |
650 | ||
651 | /* | |
652 | * Check for addr bits stuck low or shorted. | |
653 | */ | |
654 | for (test_offset = 1; test_offset < num_bytes; test_offset <<= 1) { | |
655 | z80_write(start_addr + test_offset, anti_pattern); | |
656 | ||
657 | for (offset = 1; offset < num_bytes; offset <<= 1) { | |
658 | temp = z80_read(start_addr + offset); | |
659 | if ((temp != pattern) && (offset != test_offset)) { | |
660 | printf_P(PSTR("FAILURE: Address bit stuck low or shorted" | |
661 | " @ 0x%.5lx: expected 0x%.2x, actual 0x%.2x\n"), | |
662 | start_addr + offset, pattern, temp); | |
663 | errs++; | |
664 | if (ctrlc()) | |
665 | return -1; | |
666 | } | |
667 | } | |
668 | z80_write(start_addr + test_offset, pattern); | |
669 | } | |
670 | ||
671 | if (errs) | |
672 | return errs; | |
673 | ||
674 | /* | |
675 | * Description: Test the integrity of a physical | |
676 | * memory device by performing an | |
677 | * increment/decrement test over the | |
678 | * entire region. In the process every | |
679 | * storage bit in the device is tested | |
680 | * as a zero and a one. The base address | |
681 | * and the size of the region are | |
682 | * selected by the caller. | |
683 | * | |
684 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
685 | */ | |
686 | num_bytes++; | |
687 | ||
688 | /* | |
689 | * Fill memory with a known pattern. | |
690 | */ | |
691 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) | |
692 | z80_write(addr, pattern); | |
693 | ||
694 | /* | |
695 | * Check each location and invert it for the second pass. | |
696 | */ | |
697 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { | |
698 | temp = z80_read(addr); | |
699 | if (temp != pattern) { | |
700 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" | |
701 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
702 | addr, pattern, temp); | |
703 | errs++; | |
704 | if (ctrlc()) | |
705 | return -1; | |
706 | } | |
707 | ||
708 | anti_pattern = ~pattern; | |
709 | z80_write(addr, anti_pattern); | |
710 | } | |
711 | ||
712 | /* | |
713 | * Check each location for the inverted pattern and zero it. | |
714 | */ | |
715 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { | |
716 | anti_pattern = ~pattern; | |
717 | temp = z80_read(addr); | |
718 | if (temp != anti_pattern) { | |
719 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" | |
720 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
721 | start_addr, anti_pattern, temp); | |
722 | errs++; | |
723 | if (ctrlc()) | |
724 | return -1; | |
725 | } | |
726 | z80_write(addr, 0); | |
727 | } | |
728 | ||
729 | return errs; | |
730 | } | |
731 | ||
732 | /* | |
733 | * Perform a memory test. A more complete alternative test can be | |
734 | * configured using CONFIG_SYS_ALT_MEMTEST. The complete test loops until | |
735 | * interrupted by ctrl-c or by a failure of one of the sub-tests. | |
736 | */ | |
737 | command_ret_t do_mem_mtest(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, | |
738 | char * const argv[]) | |
739 | { | |
740 | uint32_t start = 0; | |
741 | uint32_t end; | |
742 | unsigned int iteration_limit = 0; | |
743 | unsigned int iteration; | |
744 | uint32_t errs = 0; /* number of errors */ | |
745 | int ret; | |
746 | ||
747 | (void) cmdtp; | |
748 | (void) flag; | |
749 | ||
750 | if (argc > 1) | |
751 | start = eval_arg(argv[1], NULL); | |
752 | ||
753 | if (argc > 2) | |
754 | end = eval_arg(argv[2], NULL); | |
755 | else | |
756 | end = CONFIG_SYS_RAMSIZE_MAX - 1; | |
757 | ||
758 | if (argc > 3) | |
759 | iteration_limit = (unsigned int) eval_arg(argv[3], NULL); | |
760 | ||
761 | printf_P(PSTR("Testing %05lx ... %05lx:\n"), start, end); | |
762 | // debug("## %s:%d: start %#05lx end %#05lx\n", __func__, __LINE__, start, end); | |
763 | ||
764 | clear_ctrlc(); /* forget any previous Control C */ | |
765 | ||
766 | for (iteration = 0; | |
767 | !iteration_limit || iteration < iteration_limit; | |
768 | iteration++) { | |
769 | ||
770 | printf_P(PSTR("Iteration: %6d\r"), iteration + 1); | |
771 | // debug("\n"); | |
772 | ||
773 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
774 | my_puts_P(PSTR("Bus timeout\n")); | |
775 | return CMD_RET_FAILURE; | |
776 | } | |
777 | errs += mem_test_alt(start, end); | |
778 | z80_bus_cmd(Release); | |
779 | ||
780 | if (had_ctrlc() || ctrlc()) { | |
781 | break; | |
782 | } | |
783 | } | |
784 | ||
785 | if (had_ctrlc()) { | |
786 | /* Memory test was aborted - write a newline to finish off */ | |
787 | putchar('\n'); | |
788 | ret = CMD_RET_FAILURE; | |
789 | } else { | |
790 | printf_P(PSTR("Tested %d iteration(s) with %lu errors.\n"), | |
791 | iteration, errs); | |
792 | ret = errs ? CMD_RET_FAILURE : CMD_RET_SUCCESS; | |
793 | } | |
794 | ||
795 | return ret; | |
796 | } | |
797 | #endif /* CONFIG_CMD_MEMTEST */ |