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1 | /* | |
2 | * (C) Copyright 2014,2018 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 "cmd_mem.h" | |
17 | #include <avr/interrupt.h> | |
18 | ||
19 | #include "cli_readline.h" | |
20 | #include "print-utils.h" | |
21 | #include "con-utils.h" | |
22 | #include "getopt-min.h" | |
23 | #include "eval_arg.h" | |
24 | #include "timer.h" | |
25 | #include "z80-if.h" | |
26 | #include "debug.h" | |
27 | ||
28 | ||
29 | #ifndef CONFIG_SYS_MEMTEST_SCRATCH | |
30 | #define CONFIG_SYS_MEMTEST_SCRATCH 0 | |
31 | #endif | |
32 | ||
33 | /* Display values from last command. | |
34 | * Memory modify remembered values are different from display memory. | |
35 | */ | |
36 | static uint32_t dp_last_addr; | |
37 | static uint32_t dp_last_length = 0x100; | |
38 | static uint32_t mm_last_addr; | |
39 | ||
40 | static uint32_t base_address = 0; | |
41 | ||
42 | /*--------------------------------------------------------------------------*/ | |
43 | ||
44 | static ERRNUM z180_read_buf(uint8_t *buf, uint32_t addr, uint8_t count) | |
45 | { | |
46 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) | |
47 | return EBUSTO; | |
48 | ||
49 | z80_read_block (buf, addr, count); | |
50 | z80_bus_cmd(Release); | |
51 | return ESUCCESS; | |
52 | } | |
53 | ||
54 | /*--------------------------------------------------------------------------*/ | |
55 | ||
56 | command_ret_t do_mem_size(cmd_tbl_t *cmdtp UNUSED, uint_fast8_t flag UNUSED, int argc UNUSED, char * const argv[] UNUSED) | |
57 | { | |
58 | int32_t ramsize = z80_memsize_detect(); | |
59 | ||
60 | if (ramsize < 0) | |
61 | cmd_error(CMD_RET_FAILURE, (ERRNUM) -ramsize, PSTR("Couldn't access RAM")); | |
62 | ||
63 | printf_P(PSTR("Detected RAM: Start %.5lx, End: %.5lx, Size: %.5lx (%ld dec)\n"), | |
64 | 0l, ramsize ? ramsize-1 : 0l, ramsize, ramsize); | |
65 | ||
66 | return CMD_RET_SUCCESS; | |
67 | } | |
68 | ||
69 | /* Memory Display | |
70 | * | |
71 | * Syntax: | |
72 | * md {addr} {len} | |
73 | */ | |
74 | command_ret_t do_mem_md(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
75 | { | |
76 | uint32_t addr, length; | |
77 | ||
78 | (void) cmdtp; | |
79 | ||
80 | #if 0 | |
81 | printf_P(PSTR("flag: %d, argc: %d"), flag, argc); | |
82 | for (int i = 0; i < argc; i++) { | |
83 | printf_P(PSTR(", argv[%d]: %s"), i, argv[i] ? argv[i] : "<NULL>"); | |
84 | } | |
85 | putchar('\n'); | |
86 | #endif | |
87 | ||
88 | /* We use the last specified parameters, unless new ones are | |
89 | * entered. | |
90 | */ | |
91 | addr = dp_last_addr; | |
92 | length = dp_last_length; | |
93 | ||
94 | if (argc < 2) | |
95 | return CMD_RET_USAGE; | |
96 | ||
97 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
98 | /* Address is specified since argc > 1 */ | |
99 | addr = eval_arg(argv[1], NULL); | |
100 | addr += base_address; | |
101 | ||
102 | /* If another parameter, it is the length to display. */ | |
103 | if (argc > 2) | |
104 | length = eval_arg(argv[2], NULL); | |
105 | } | |
106 | ||
107 | /* Print the lines. */ | |
108 | ERRNUM ret = dump_mem(addr, addr, length, z180_read_buf, NULL); | |
109 | if (ret == EBUSTO) | |
110 | cmd_error(CMD_RET_FAILURE, ret, NULL); | |
111 | ||
112 | if (ret == ESUCCESS) { | |
113 | dp_last_addr = addr + length; | |
114 | dp_last_length = length; | |
115 | } | |
116 | return CMD_RET_SUCCESS; | |
117 | } | |
118 | ||
119 | /* Modify memory. | |
120 | * | |
121 | * Syntax: | |
122 | * mm {addr} | |
123 | * nm {addr} | |
124 | */ | |
125 | static command_ret_t | |
126 | mod_mem(cmd_tbl_t *cmdtp, int incrflag, uint_fast8_t flag, int argc, char * const argv[]) | |
127 | { | |
128 | uint32_t addr; | |
129 | uint8_t data; | |
130 | int nbytes; | |
131 | ||
132 | (void) cmdtp; | |
133 | ||
134 | if (argc != 2) | |
135 | return CMD_RET_USAGE; | |
136 | ||
137 | /* We use the last specified parameters, unless new ones are | |
138 | * entered. | |
139 | */ | |
140 | addr = mm_last_addr; | |
141 | ||
142 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
143 | /* New command specified. | |
144 | */ | |
145 | ||
146 | /* Address is specified since argc > 1 | |
147 | */ | |
148 | addr = eval_arg(argv[1], NULL); | |
149 | addr += base_address; | |
150 | } | |
151 | ||
152 | /* Print the address, followed by value. Then accept input for | |
153 | * the next value. A non-converted value exits. | |
154 | */ | |
155 | do { | |
156 | z80_bus_request_or_exit(); | |
157 | data = z80_read(addr); | |
158 | z80_bus_cmd(Release); | |
159 | printf_P(PSTR("%05lx: %02x"), addr, data); | |
160 | ||
161 | nbytes = cli_readline(PSTR(" ? "), 0); | |
162 | if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) { | |
163 | /* <CR> pressed as only input, don't modify current | |
164 | * location and move to next. "-" pressed will go back. | |
165 | */ | |
166 | if (incrflag) | |
167 | addr += nbytes ? -1 : 1; | |
168 | nbytes = 1; | |
169 | ||
170 | } else { | |
171 | char *endp; | |
172 | data = eval_arg(console_buffer, &endp); | |
173 | nbytes = endp - console_buffer; | |
174 | if (nbytes) { | |
175 | z80_bus_request_or_exit(); | |
176 | z80_write(addr, data); | |
177 | z80_bus_cmd(Release); | |
178 | if (incrflag) | |
179 | addr++; | |
180 | } | |
181 | } | |
182 | } while (nbytes > 0); | |
183 | ||
184 | mm_last_addr = addr; | |
185 | return CMD_RET_SUCCESS; | |
186 | } | |
187 | ||
188 | ||
189 | command_ret_t do_mem_mm(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
190 | { | |
191 | return mod_mem (cmdtp, 1, flag, argc, argv); | |
192 | } | |
193 | command_ret_t do_mem_nm(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
194 | { | |
195 | return mod_mem (cmdtp, 0, flag, argc, argv); | |
196 | } | |
197 | ||
198 | command_ret_t do_mem_mw(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
199 | { | |
200 | uint32_t writeval; | |
201 | uint32_t addr; | |
202 | uint32_t count = 1; | |
203 | uint_fast8_t width = 1; | |
204 | ||
205 | (void) cmdtp; (void) flag; | |
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 | z80_bus_request_or_exit(); | |
239 | if (width == 1) | |
240 | z80_memset(addr, writeval, count); | |
241 | else { | |
242 | while (count--) { | |
243 | z80_write_block((const uint8_t *) &writeval, addr, width); | |
244 | addr += width; | |
245 | } | |
246 | } | |
247 | z80_bus_cmd(Release); | |
248 | ||
249 | return CMD_RET_SUCCESS; | |
250 | } | |
251 | ||
252 | #ifdef CONFIG_MX_CYCLIC | |
253 | command_ret_t do_mem_mdc ( cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
254 | { | |
255 | uint32_t count; | |
256 | uint32_t ts; | |
257 | ||
258 | (void) cmdtp; | |
259 | (void) flag; | |
260 | ||
261 | if (argv[0][1] != 'd') { | |
262 | int opt; | |
263 | while ((opt = getopt(argc, argv, PSTR("bwl"))) != -1) | |
264 | if (opt == '?') | |
265 | return CMD_RET_USAGE; | |
266 | --optind; | |
267 | } | |
268 | ||
269 | if (argc-optind != 4) | |
270 | return CMD_RET_USAGE; | |
271 | ||
272 | count = eval_arg(argv[optind + 3], NULL); | |
273 | ||
274 | clear_ctrlc(); /* forget any previous Control C */ | |
275 | for (;;) { | |
276 | ||
277 | if (argv[0][1] == 'd') | |
278 | do_mem_md (NULL, 0, argc-1, argv); /* memory display */ | |
279 | else | |
280 | do_mem_mw (NULL, 0, argc-1, argv); /* memory write */ | |
281 | ||
282 | ||
283 | /* delay for <count> ms... */ | |
284 | ts = get_timer(0); | |
285 | do { | |
286 | /* check for ctrl-c to abort... */ | |
287 | if (had_ctrlc() || ctrlc()) { | |
288 | my_puts_P(PSTR("Abort\n")); | |
289 | return CMD_RET_SUCCESS; | |
290 | } | |
291 | } while (get_timer(ts) < count); | |
292 | } | |
293 | ||
294 | return CMD_RET_SUCCESS; | |
295 | } | |
296 | #endif /* CONFIG_MX_CYCLIC */ | |
297 | ||
298 | command_ret_t do_mem_cmp(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
299 | { | |
300 | uint32_t addr1, addr2, count, ngood; | |
301 | command_ret_t rcode = CMD_RET_SUCCESS; | |
302 | uint8_t byte1, byte2; | |
303 | ||
304 | (void) cmdtp; | |
305 | (void) flag; | |
306 | ||
307 | if (argc != 4) | |
308 | return CMD_RET_USAGE; | |
309 | ||
310 | ||
311 | addr1 = eval_arg(argv[1], NULL); | |
312 | addr1 += base_address; | |
313 | addr2 = eval_arg(argv[2], NULL); | |
314 | addr2 += base_address; | |
315 | count = eval_arg(argv[3], NULL); | |
316 | ||
317 | for (ngood = 0; ngood < count; ++ngood) { | |
318 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
319 | my_puts_P(PSTR("Bus timeout\n")); | |
320 | rcode = CMD_RET_FAILURE; | |
321 | break; | |
322 | } | |
323 | byte1 = z80_read(addr1); | |
324 | byte2 = z80_read(addr2); | |
325 | z80_bus_cmd(Release); | |
326 | if (byte1 != byte2) { | |
327 | printf_P(PSTR("byte at 0x%05lx (%#02x) != " | |
328 | "byte at 0x%05lx (%#02x)\n"), | |
329 | addr1, byte1, addr2, byte2); | |
330 | rcode = CMD_RET_FAILURE; | |
331 | break; | |
332 | } | |
333 | addr1++; | |
334 | addr2++; | |
335 | ||
336 | /* check for ctrl-c to abort... */ | |
337 | if (ctrlc()) { | |
338 | my_puts_P(PSTR("Abort\n")); | |
339 | return CMD_RET_SUCCESS; | |
340 | } | |
341 | } | |
342 | ||
343 | printf_P(PSTR("Total of %ld byte(s) (0x%lx) were the same\n"), ngood, ngood); | |
344 | return rcode; | |
345 | } | |
346 | ||
347 | command_ret_t do_mem_cp(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
348 | { | |
349 | uint32_t src, dest, count; | |
350 | int_fast8_t step; | |
351 | ||
352 | (void) cmdtp; | |
353 | (void) flag; | |
354 | ||
355 | if (argc != 4) | |
356 | return CMD_RET_USAGE; | |
357 | ||
358 | src = eval_arg(argv[1], NULL); | |
359 | src += base_address; | |
360 | dest = eval_arg(argv[2], NULL); | |
361 | dest += base_address; | |
362 | count = eval_arg(argv[3], NULL); | |
363 | ||
364 | if (count == 0) { | |
365 | my_puts_P(PSTR("Zero length?\n")); | |
366 | return CMD_RET_FAILURE; | |
367 | } | |
368 | ||
369 | if (dest > src) { | |
370 | src += count - 1; | |
371 | dest += count - 1; | |
372 | step = -1; | |
373 | } else | |
374 | step = 1; | |
375 | ||
376 | while (count-- > 0) { | |
377 | uint8_t data; | |
378 | z80_bus_request_or_exit(); | |
379 | data = z80_read(src); | |
380 | z80_write(dest, data); | |
381 | z80_bus_cmd(Release); | |
382 | src += step; | |
383 | dest += step; | |
384 | ||
385 | /* check for ctrl-c to abort... */ | |
386 | if (ctrlc()) { | |
387 | my_puts_P(PSTR("Abort\n")); | |
388 | return CMD_RET_SUCCESS; | |
389 | } | |
390 | } | |
391 | return CMD_RET_SUCCESS; | |
392 | } | |
393 | ||
394 | command_ret_t do_mem_base(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, | |
395 | char * const argv[]) | |
396 | { | |
397 | (void) cmdtp; | |
398 | (void) flag; | |
399 | ||
400 | if (argc > 1) { | |
401 | /* Set new base address. */ | |
402 | base_address = eval_arg(argv[1], NULL); | |
403 | } | |
404 | /* Print the current base address. */ | |
405 | printf_P(PSTR("Base Address: 0x%05lx\n"), base_address); | |
406 | return CMD_RET_SUCCESS; | |
407 | } | |
408 | ||
409 | command_ret_t do_mem_loop(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, | |
410 | char * const argv[]) | |
411 | { | |
412 | uint32_t addr, length; | |
413 | ||
414 | (void) cmdtp; | |
415 | (void) flag; | |
416 | ||
417 | if (argc < 3) | |
418 | return CMD_RET_USAGE; | |
419 | ||
420 | /* Address is always specified. */ | |
421 | addr = eval_arg(argv[1], NULL); | |
422 | ||
423 | /* Length is the number of bytes. */ | |
424 | length = eval_arg(argv[2], NULL); | |
425 | ||
426 | ||
427 | /* We want to optimize the loops to run as fast as possible. | |
428 | * If we have only one object, just run infinite loops. | |
429 | */ | |
430 | if (length == 1) { | |
431 | z80_bus_request_or_exit(); | |
432 | cli(); | |
433 | for (;;) | |
434 | z80_read(addr); | |
435 | } | |
436 | ||
437 | z80_bus_request_or_exit(); | |
438 | cli(); | |
439 | for (;;) { | |
440 | uint32_t i = length; | |
441 | uint32_t p = addr; | |
442 | while (i-- > 0) | |
443 | z80_read(p++); | |
444 | } | |
445 | ||
446 | return CMD_RET_SUCCESS; | |
447 | } | |
448 | ||
449 | command_ret_t do_mem_loopw (cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) | |
450 | { | |
451 | uint32_t addr, length; | |
452 | uint8_t data; | |
453 | ||
454 | (void) cmdtp; | |
455 | (void) flag; | |
456 | ||
457 | if (argc < 4) | |
458 | return CMD_RET_USAGE; | |
459 | ||
460 | /* Address is always specified. */ | |
461 | addr = eval_arg(argv[1], NULL); | |
462 | ||
463 | /* Length is the number of bytes. */ | |
464 | length = eval_arg(argv[2], NULL); | |
465 | ||
466 | data = eval_arg(argv[3], NULL); | |
467 | ||
468 | /* | |
469 | * We want to optimize the loops to run as fast as possible. | |
470 | * If we have only one object, just run infinite loops. | |
471 | */ | |
472 | if (length == 1) { | |
473 | z80_bus_request_or_exit(); | |
474 | cli(); | |
475 | for (;;) | |
476 | z80_write(addr, data); | |
477 | } | |
478 | ||
479 | z80_bus_request_or_exit(); | |
480 | cli(); | |
481 | for (;;) { | |
482 | uint32_t i = length; | |
483 | uint32_t p = addr; | |
484 | while (i-- > 0) | |
485 | z80_write(p++, data); | |
486 | } | |
487 | } | |
488 | ||
489 | //#define CONFIG_SYS_ALT_MEMTEST | |
490 | ||
491 | #ifdef CONFIG_CMD_MEMTEST | |
492 | static uint32_t mem_test_alt(uint32_t start_addr, uint32_t end_addr) | |
493 | { | |
494 | uint32_t addr; | |
495 | uint32_t dummy; | |
496 | uint32_t errs = 0; | |
497 | uint32_t offset; | |
498 | uint32_t test_offset; | |
499 | uint8_t pattern; | |
500 | uint8_t anti_pattern; | |
501 | uint8_t temp; | |
502 | uint32_t num_bytes; | |
503 | ||
504 | static const FLASH uint8_t bitpattern[] = { | |
505 | 0x01, /* single bit */ | |
506 | 0x03, /* two adjacent bits */ | |
507 | 0x07, /* three adjacent bits */ | |
508 | 0x0F, /* four adjacent bits */ | |
509 | 0x05, /* two non-adjacent bits */ | |
510 | 0x15, /* three non-adjacent bits */ | |
511 | 0x55, /* four non-adjacent bits */ | |
512 | 0xaa, /* alternating 1/0 */ | |
513 | }; | |
514 | ||
515 | /* | |
516 | * Data line test: write a pattern to the first | |
517 | * location, write the 1's complement to a 'parking' | |
518 | * address (changes the state of the data bus so a | |
519 | * floating bus doesn't give a false OK), and then | |
520 | * read the value back. Note that we read it back | |
521 | * into a variable because the next time we read it, | |
522 | * it might be right (been there, tough to explain to | |
523 | * the quality guys why it prints a failure when the | |
524 | * "is" and "should be" are obviously the same in the | |
525 | * error message). | |
526 | * | |
527 | * Rather than exhaustively testing, we test some | |
528 | * patterns by shifting '1' bits through a field of | |
529 | * '0's and '0' bits through a field of '1's (i.e. | |
530 | * pattern and ~pattern). | |
531 | */ | |
532 | addr = start_addr; | |
533 | dummy = start_addr+1; | |
534 | for (unsigned int j = 0; j < ARRAY_SIZE(bitpattern); j++) { | |
535 | pattern = bitpattern[j]; | |
536 | for (; pattern != 0; pattern <<= 1) { | |
537 | anti_pattern = ~pattern; | |
538 | z80_write(addr, pattern); | |
539 | z80_write(dummy, anti_pattern); /* clear the test data off the bus */ | |
540 | temp = z80_read(addr); | |
541 | if (temp != pattern) { | |
542 | printf_P(PSTR("FAILURE (data line): " | |
543 | "expected %02x, actual %02x\n"), | |
544 | pattern, temp); | |
545 | errs++; | |
546 | } | |
547 | z80_write(addr, anti_pattern); | |
548 | z80_write(dummy, pattern); /* clear the test data off the bus */ | |
549 | temp = z80_read(addr); | |
550 | if (temp != anti_pattern) { | |
551 | printf_P(PSTR("FAILURE (data line): " | |
552 | "Is %02x, should be %02x\n"), | |
553 | temp, anti_pattern); | |
554 | errs++; | |
555 | } | |
556 | } | |
557 | ||
558 | if (ctrlc()) | |
559 | return -1; | |
560 | } | |
561 | ||
562 | if (errs) | |
563 | return errs; | |
564 | ||
565 | /* | |
566 | * Based on code whose Original Author and Copyright | |
567 | * information follows: Copyright (c) 1998 by Michael | |
568 | * Barr. This software is placed into the public | |
569 | * domain and may be used for any purpose. However, | |
570 | * this notice must not be changed or removed and no | |
571 | * warranty is either expressed or implied by its | |
572 | * publication or distribution. | |
573 | */ | |
574 | ||
575 | /* | |
576 | * Address line test | |
577 | ||
578 | * Description: Test the address bus wiring in a | |
579 | * memory region by performing a walking | |
580 | * 1's test on the relevant bits of the | |
581 | * address and checking for aliasing. | |
582 | * This test will find single-bit | |
583 | * address failures such as stuck-high, | |
584 | * stuck-low, and shorted pins. The base | |
585 | * address and size of the region are | |
586 | * selected by the caller. | |
587 | ||
588 | * Notes: For best results, the selected base | |
589 | * address should have enough LSB 0's to | |
590 | * guarantee single address bit changes. | |
591 | * For example, to test a 64-Kbyte | |
592 | * region, select a base address on a | |
593 | * 64-Kbyte boundary. Also, select the | |
594 | * region size as a power-of-two if at | |
595 | * all possible. | |
596 | * | |
597 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
598 | */ | |
599 | ||
600 | num_bytes = (end_addr - start_addr) / sizeof(uint8_t); | |
601 | ||
602 | pattern = 0xaa; | |
603 | anti_pattern = 0x55; | |
604 | ||
605 | // debug("## %s:%d: length = 0x%.5lx\n", __func__, __LINE__, num_bytes); | |
606 | /* | |
607 | * Write the default pattern at each of the | |
608 | * power-of-two offsets. | |
609 | */ | |
610 | for (offset = 1; offset < num_bytes; offset <<= 1) | |
611 | z80_write(addr+offset, pattern); | |
612 | ||
613 | /* | |
614 | * Check for address bits stuck high. | |
615 | */ | |
616 | z80_write(start_addr, anti_pattern); | |
617 | ||
618 | for (offset = 1; offset < num_bytes; offset <<= 1) { | |
619 | temp = z80_read(start_addr + offset); | |
620 | if (temp != pattern) { | |
621 | printf_P(PSTR("FAILURE: Address bit stuck high @ 0x%.5lx:" | |
622 | " expected 0x%.2x, actual 0x%.2x\n"), | |
623 | start_addr + offset, pattern, temp); | |
624 | errs++; | |
625 | if (ctrlc()) | |
626 | return -1; | |
627 | } | |
628 | } | |
629 | z80_write(start_addr, pattern); | |
630 | ||
631 | /* | |
632 | * Check for addr bits stuck low or shorted. | |
633 | */ | |
634 | for (test_offset = 1; test_offset < num_bytes; test_offset <<= 1) { | |
635 | z80_write(start_addr + test_offset, anti_pattern); | |
636 | ||
637 | for (offset = 1; offset < num_bytes; offset <<= 1) { | |
638 | temp = z80_read(start_addr + offset); | |
639 | if ((temp != pattern) && (offset != test_offset)) { | |
640 | printf_P(PSTR("FAILURE: Address bit stuck low or shorted" | |
641 | " @ 0x%.5lx: expected 0x%.2x, actual 0x%.2x\n"), | |
642 | start_addr + offset, pattern, temp); | |
643 | errs++; | |
644 | if (ctrlc()) | |
645 | return -1; | |
646 | } | |
647 | } | |
648 | z80_write(start_addr + test_offset, pattern); | |
649 | } | |
650 | ||
651 | if (errs) | |
652 | return errs; | |
653 | ||
654 | /* | |
655 | * Description: Test the integrity of a physical | |
656 | * memory device by performing an | |
657 | * increment/decrement test over the | |
658 | * entire region. In the process every | |
659 | * storage bit in the device is tested | |
660 | * as a zero and a one. The base address | |
661 | * and the size of the region are | |
662 | * selected by the caller. | |
663 | * | |
664 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
665 | */ | |
666 | num_bytes++; | |
667 | ||
668 | /* | |
669 | * Fill memory with a known pattern. | |
670 | */ | |
671 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) | |
672 | z80_write(addr, pattern); | |
673 | ||
674 | /* | |
675 | * Check each location and invert it for the second pass. | |
676 | */ | |
677 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { | |
678 | temp = z80_read(addr); | |
679 | if (temp != pattern) { | |
680 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" | |
681 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
682 | addr, pattern, temp); | |
683 | errs++; | |
684 | if (ctrlc()) | |
685 | return -1; | |
686 | } | |
687 | ||
688 | anti_pattern = ~pattern; | |
689 | z80_write(addr, anti_pattern); | |
690 | } | |
691 | ||
692 | /* | |
693 | * Check each location for the inverted pattern and zero it. | |
694 | */ | |
695 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { | |
696 | anti_pattern = ~pattern; | |
697 | temp = z80_read(addr); | |
698 | if (temp != anti_pattern) { | |
699 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" | |
700 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
701 | start_addr, anti_pattern, temp); | |
702 | errs++; | |
703 | if (ctrlc()) | |
704 | return -1; | |
705 | } | |
706 | z80_write(addr, 0); | |
707 | } | |
708 | ||
709 | return errs; | |
710 | } | |
711 | ||
712 | /* | |
713 | * Perform a memory test. A more complete alternative test can be | |
714 | * configured using CONFIG_SYS_ALT_MEMTEST. The complete test loops until | |
715 | * interrupted by ctrl-c or by a failure of one of the sub-tests. | |
716 | */ | |
717 | command_ret_t do_mem_mtest(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, | |
718 | char * const argv[]) | |
719 | { | |
720 | uint32_t start = 0; | |
721 | uint32_t end; | |
722 | unsigned int iteration_limit = 0; | |
723 | unsigned int iteration; | |
724 | uint32_t errs = 0; /* number of errors */ | |
725 | int ret; | |
726 | ||
727 | (void) cmdtp; | |
728 | (void) flag; | |
729 | ||
730 | if (argc > 1) | |
731 | start = eval_arg(argv[1], NULL); | |
732 | ||
733 | if (argc > 2) | |
734 | end = eval_arg(argv[2], NULL); | |
735 | else | |
736 | end = CONFIG_SYS_RAMSIZE_MAX - 1; | |
737 | ||
738 | if (argc > 3) | |
739 | iteration_limit = (unsigned int) eval_arg(argv[3], NULL); | |
740 | ||
741 | printf_P(PSTR("Testing %05lx ... %05lx:\n"), start, end); | |
742 | // debug("## %s:%d: start %#05lx end %#05lx\n", __func__, __LINE__, start, end); | |
743 | ||
744 | clear_ctrlc(); /* forget any previous Control C */ | |
745 | ||
746 | for (iteration = 0; | |
747 | !iteration_limit || iteration < iteration_limit; | |
748 | iteration++) { | |
749 | ||
750 | printf_P(PSTR("Iteration: %6d\r"), iteration + 1); | |
751 | // debug("\n"); | |
752 | ||
753 | z80_bus_request_or_exit(); | |
754 | errs += mem_test_alt(start, end); | |
755 | z80_bus_cmd(Release); | |
756 | ||
757 | if (had_ctrlc() || ctrlc()) { | |
758 | break; | |
759 | } | |
760 | } | |
761 | ||
762 | if (had_ctrlc()) { | |
763 | /* Memory test was aborted - write a newline to finish off */ | |
764 | putchar('\n'); | |
765 | ret = CMD_RET_FAILURE; | |
766 | } else { | |
767 | printf_P(PSTR("Tested %d iteration(s) with %lu errors.\n"), | |
768 | iteration, errs); | |
769 | ret = errs ? CMD_RET_FAILURE : CMD_RET_SUCCESS; | |
770 | } | |
771 | ||
772 | return ret; | |
773 | } | |
774 | #endif /* CONFIG_CMD_MEMTEST */ |