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Commit | Line | Data |
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72f58822 | 1 | /* |
35edb766 L |
2 | * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de> |
3 | * | |
72f58822 L |
4 | * (C) Copyright 2000 |
5 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
6 | * | |
8ed66016 | 7 | * SPDX-License-Identifier: GPL-2.0 |
72f58822 L |
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 <stdlib.h> | |
18 | #include <ctype.h> | |
5480dc65 | 19 | #include <avr/interrupt.h> |
72f58822 | 20 | |
72f58822 L |
21 | #include "command.h" |
22 | #include "cli_readline.h" | |
8f23e84c | 23 | #include "print-utils.h" |
72f58822 | 24 | #include "con-utils.h" |
32154e5a | 25 | #include "getopt-min.h" |
5480dc65 | 26 | #include "timer.h" |
72f58822 | 27 | #include "z80-if.h" |
5480dc65 | 28 | #include "debug.h" |
72f58822 | 29 | |
72f58822 L |
30 | |
31 | #ifndef CONFIG_SYS_MEMTEST_SCRATCH | |
32 | #define CONFIG_SYS_MEMTEST_SCRATCH 0 | |
33 | #endif | |
34 | ||
72f58822 L |
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 | ||
d9d8de47 | 46 | int z180_read_buf(uint8_t *buf, uint32_t addr, uint8_t count) |
e39cd2a2 | 47 | { |
d9d8de47 L |
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; | |
72f58822 L |
54 | } |
55 | ||
72f58822 L |
56 | /*--------------------------------------------------------------------------*/ |
57 | ||
58 | /* Memory Display | |
59 | * | |
60 | * Syntax: | |
61 | * md {addr} {len} | |
62 | */ | |
d0581f88 | 63 | command_ret_t do_mem_md(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
64 | { |
65 | uint32_t addr, length; | |
6035a17b | 66 | |
72f58822 L |
67 | (void) cmdtp; |
68 | ||
6035a17b | 69 | #if 0 |
72f58822 L |
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 = strtoul(argv[1], NULL, 16); | |
89 | addr += base_address; | |
90 | ||
91 | /* If another parameter, it is the length to display. */ | |
92 | if (argc > 2) | |
93 | length = strtoul(argv[2], NULL, 16); | |
94 | } | |
95 | ||
96 | /* Print the lines. */ | |
d9d8de47 L |
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 | } | |
72f58822 | 102 | |
d9d8de47 L |
103 | if (ret >= 0) { |
104 | dp_last_addr = addr + length; | |
105 | dp_last_length = length; | |
106 | } | |
d0581f88 | 107 | return CMD_RET_SUCCESS; |
72f58822 L |
108 | } |
109 | ||
d0581f88 L |
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, int 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 = strtoul(argv[1], NULL, 16); | |
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 { | |
ea6971b8 L |
147 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
148 | my_puts_P(PSTR("Bus timeout\n")); | |
149 | return CMD_RET_FAILURE; | |
150 | } | |
d0581f88 | 151 | data = z80_read(addr); |
d0581f88 | 152 | z80_bus_cmd(Release); |
ea6971b8 | 153 | printf_P(PSTR("%05lx: %02x"), addr, data); |
d0581f88 | 154 | |
8ed66016 | 155 | nbytes = cli_readline(PSTR(" ? "), 0); |
d0581f88 L |
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; | |
ad9bc17c L |
163 | |
164 | } else { | |
d0581f88 L |
165 | char *endp; |
166 | data = strtoul(console_buffer, &endp, 16); | |
167 | nbytes = endp - console_buffer; | |
168 | if (nbytes) { | |
ea6971b8 L |
169 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
170 | my_puts_P(PSTR("Bus timeout\n")); | |
171 | return CMD_RET_FAILURE; | |
172 | } | |
d0581f88 L |
173 | z80_write(addr, data); |
174 | z80_bus_cmd(Release); | |
175 | if (incrflag) | |
176 | addr++; | |
177 | } | |
178 | } | |
179 | } while (nbytes); | |
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, int flag, int argc, char * const argv[]) | |
72f58822 L |
187 | { |
188 | return mod_mem (cmdtp, 1, flag, argc, argv); | |
189 | } | |
d0581f88 | 190 | command_ret_t do_mem_nm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
191 | { |
192 | return mod_mem (cmdtp, 0, flag, argc, argv); | |
193 | } | |
194 | ||
d0581f88 | 195 | command_ret_t do_mem_mw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 | 196 | { |
32154e5a L |
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 = 1; | |
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 | } | |
72f58822 | 223 | |
32154e5a L |
224 | /* remaining arguments */ |
225 | argc -= optind; | |
226 | if ((argc < 2) || (argc > 3)) | |
72f58822 L |
227 | return CMD_RET_USAGE; |
228 | ||
32154e5a L |
229 | /* Address and value are specified since (adjusted) argc >= 2 */ |
230 | addr = strtoul(argv[optind++], NULL, 16); | |
72f58822 | 231 | addr += base_address; |
32154e5a | 232 | writeval = strtoul(argv[optind++], NULL, 16); |
72f58822 L |
233 | |
234 | /* Count ? */ | |
32154e5a L |
235 | if (argc == 3) |
236 | count = strtoul(argv[optind], NULL, 16); | |
72f58822 | 237 | |
ea6971b8 L |
238 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
239 | my_puts_P(PSTR("Bus timeout\n")); | |
240 | return CMD_RET_FAILURE; | |
72f58822 | 241 | } |
32154e5a L |
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 | } | |
62f624d3 | 251 | z80_bus_cmd(Release); |
72f58822 | 252 | |
d0581f88 | 253 | return CMD_RET_SUCCESS; |
72f58822 L |
254 | } |
255 | ||
256 | #ifdef CONFIG_MX_CYCLIC | |
d0581f88 | 257 | command_ret_t do_mem_mdc ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 | 258 | { |
72f58822 | 259 | uint32_t count; |
5480dc65 L |
260 | uint32_t ts; |
261 | ||
262 | (void) cmdtp; | |
263 | (void) flag; | |
72f58822 L |
264 | |
265 | if (argc < 4) | |
266 | return CMD_RET_USAGE; | |
267 | ||
268 | count = strtoul(argv[3], NULL, 10); | |
269 | ||
5480dc65 | 270 | clear_ctrlc(); /* forget any previous Control C */ |
72f58822 | 271 | for (;;) { |
72f58822 | 272 | |
5480dc65 L |
273 | if (argv[0][1] == 'd') |
274 | do_mem_md (NULL, 0, 3, argv); | |
275 | else | |
276 | do_mem_mw (NULL, 0, 3, argv); | |
72f58822 | 277 | |
72f58822 L |
278 | |
279 | /* delay for <count> ms... */ | |
5480dc65 L |
280 | ts = get_timer(0); |
281 | do { | |
282 | /* check for ctrl-c to abort... */ | |
283 | if (had_ctrlc() || ctrlc()) { | |
284 | my_puts_P(PSTR("Abort\n")); | |
285 | return CMD_RET_SUCCESS; | |
286 | } | |
287 | } while (get_timer(ts) < count); | |
72f58822 L |
288 | } |
289 | ||
d0581f88 | 290 | return CMD_RET_SUCCESS; |
72f58822 L |
291 | } |
292 | #endif /* CONFIG_MX_CYCLIC */ | |
293 | ||
d0581f88 | 294 | command_ret_t do_mem_cmp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
295 | { |
296 | uint32_t addr1, addr2, count, ngood; | |
d0581f88 | 297 | command_ret_t rcode = CMD_RET_SUCCESS; |
72f58822 L |
298 | uint8_t byte1, byte2; |
299 | ||
300 | (void) cmdtp; | |
301 | (void) flag; | |
302 | ||
303 | if (argc != 4) | |
304 | return CMD_RET_USAGE; | |
305 | ||
306 | ||
307 | addr1 = strtoul(argv[1], NULL, 16); | |
308 | addr1 += base_address; | |
309 | addr2 = strtoul(argv[2], NULL, 16); | |
310 | addr2 += base_address; | |
311 | count = strtoul(argv[3], NULL, 16); | |
312 | ||
313 | for (ngood = 0; ngood < count; ++ngood) { | |
ea6971b8 L |
314 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
315 | my_puts_P(PSTR("Bus timeout\n")); | |
316 | rcode = CMD_RET_FAILURE; | |
317 | break; | |
318 | } | |
72f58822 L |
319 | byte1 = z80_read(addr1); |
320 | byte2 = z80_read(addr2); | |
62f624d3 | 321 | z80_bus_cmd(Release); |
72f58822 | 322 | if (byte1 != byte2) { |
6035a17b L |
323 | printf_P(PSTR("byte at 0x%05lx (%#02x) != " |
324 | "byte at 0x%05lx (%#02x)\n"), | |
72f58822 | 325 | addr1, byte1, addr2, byte2); |
d0581f88 | 326 | rcode = CMD_RET_FAILURE; |
72f58822 L |
327 | break; |
328 | } | |
329 | addr1++; | |
330 | addr2++; | |
331 | ||
332 | /* check for ctrl-c to abort... */ | |
333 | if (ctrlc()) { | |
69988dc1 | 334 | my_puts_P(PSTR("Abort\n")); |
d0581f88 | 335 | return CMD_RET_SUCCESS; |
72f58822 L |
336 | } |
337 | } | |
338 | ||
69988dc1 | 339 | printf_P(PSTR("Total of %ld byte(s) (0x%lx) were the same\n"), ngood, ngood); |
72f58822 L |
340 | return rcode; |
341 | } | |
342 | ||
d0581f88 | 343 | command_ret_t do_mem_cp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
344 | { |
345 | uint32_t src, dest, count; | |
346 | int_fast8_t step; | |
347 | ||
348 | (void) cmdtp; | |
349 | (void) flag; | |
350 | ||
351 | if (argc != 4) | |
352 | return CMD_RET_USAGE; | |
353 | ||
354 | src = strtoul(argv[1], NULL, 16); | |
355 | src += base_address; | |
356 | dest = strtoul(argv[2], NULL, 16); | |
357 | dest += base_address; | |
358 | count = strtoul(argv[3], NULL, 16); | |
359 | ||
360 | if (count == 0) { | |
69988dc1 | 361 | my_puts_P(PSTR("Zero length?\n")); |
d0581f88 | 362 | return CMD_RET_FAILURE; |
72f58822 | 363 | } |
6035a17b | 364 | |
72f58822 L |
365 | if (dest > src) { |
366 | src += count - 1; | |
367 | dest += count - 1; | |
368 | step = -1; | |
369 | } else | |
370 | step = 1; | |
371 | ||
372 | while (count-- > 0) { | |
373 | uint8_t data; | |
ea6971b8 L |
374 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
375 | my_puts_P(PSTR("Bus timeout\n")); | |
376 | return CMD_RET_FAILURE; | |
377 | } | |
72f58822 L |
378 | data = z80_read(src); |
379 | z80_write(dest, data); | |
62f624d3 | 380 | z80_bus_cmd(Release); |
72f58822 L |
381 | src += step; |
382 | dest += step; | |
383 | ||
384 | /* check for ctrl-c to abort... */ | |
385 | if (ctrlc()) { | |
69988dc1 | 386 | my_puts_P(PSTR("Abort\n")); |
d0581f88 | 387 | return CMD_RET_SUCCESS; |
72f58822 L |
388 | } |
389 | } | |
d0581f88 | 390 | return CMD_RET_SUCCESS; |
72f58822 L |
391 | } |
392 | ||
d0581f88 | 393 | command_ret_t do_mem_base(cmd_tbl_t *cmdtp, int flag, int argc, |
72f58822 L |
394 | char * const argv[]) |
395 | { | |
396 | (void) cmdtp; | |
397 | (void) flag; | |
398 | ||
399 | if (argc > 1) { | |
400 | /* Set new base address. */ | |
401 | base_address = strtoul(argv[1], NULL, 16); | |
402 | } | |
403 | /* Print the current base address. */ | |
69988dc1 | 404 | printf_P(PSTR("Base Address: 0x%05lx\n"), base_address); |
d0581f88 | 405 | return CMD_RET_SUCCESS; |
72f58822 L |
406 | } |
407 | ||
d0581f88 | 408 | command_ret_t do_mem_loop(cmd_tbl_t *cmdtp, int flag, int argc, |
72f58822 L |
409 | char * const argv[]) |
410 | { | |
411 | uint32_t addr, length; | |
412 | ||
413 | (void) cmdtp; | |
414 | (void) flag; | |
415 | ||
416 | if (argc < 3) | |
417 | return CMD_RET_USAGE; | |
418 | ||
419 | /* Address is always specified. */ | |
420 | addr = strtoul(argv[1], NULL, 16); | |
421 | ||
422 | /* Length is the number of bytes. */ | |
423 | length = strtoul(argv[2], NULL, 16); | |
424 | ||
425 | ||
426 | /* We want to optimize the loops to run as fast as possible. | |
427 | * If we have only one object, just run infinite loops. | |
428 | */ | |
429 | if (length == 1) { | |
ea6971b8 L |
430 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
431 | my_puts_P(PSTR("Bus timeout\n")); | |
432 | return CMD_RET_FAILURE; | |
433 | } | |
5480dc65 | 434 | cli(); |
72f58822 L |
435 | for (;;) |
436 | z80_read(addr); | |
72f58822 L |
437 | } |
438 | ||
ea6971b8 L |
439 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
440 | my_puts_P(PSTR("Bus timeout\n")); | |
441 | return CMD_RET_FAILURE; | |
442 | } | |
5480dc65 | 443 | cli(); |
72f58822 L |
444 | for (;;) { |
445 | uint32_t i = length; | |
446 | uint32_t p = addr; | |
447 | while (i-- > 0) | |
448 | z80_read(p++); | |
449 | } | |
72f58822 | 450 | |
d0581f88 | 451 | return CMD_RET_SUCCESS; |
72f58822 L |
452 | } |
453 | ||
d0581f88 | 454 | command_ret_t do_mem_loopw (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
455 | { |
456 | uint32_t addr, length; | |
457 | uint8_t data; | |
458 | ||
459 | (void) cmdtp; | |
460 | (void) flag; | |
461 | ||
462 | if (argc < 4) | |
463 | return CMD_RET_USAGE; | |
464 | ||
465 | /* Address is always specified. */ | |
466 | addr = strtoul(argv[1], NULL, 16); | |
467 | ||
468 | /* Length is the number of bytes. */ | |
469 | length = strtoul(argv[2], NULL, 16); | |
470 | ||
471 | data = strtoul(argv[3], NULL, 16); | |
472 | ||
5480dc65 L |
473 | /* |
474 | * We want to optimize the loops to run as fast as possible. | |
72f58822 L |
475 | * If we have only one object, just run infinite loops. |
476 | */ | |
477 | if (length == 1) { | |
ea6971b8 L |
478 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
479 | my_puts_P(PSTR("Bus timeout\n")); | |
480 | return CMD_RET_FAILURE; | |
481 | } | |
5480dc65 | 482 | cli(); |
72f58822 L |
483 | for (;;) |
484 | z80_write(addr, data); | |
485 | } | |
486 | ||
ea6971b8 L |
487 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
488 | my_puts_P(PSTR("Bus timeout\n")); | |
489 | return CMD_RET_FAILURE; | |
490 | } | |
5480dc65 | 491 | cli(); |
72f58822 L |
492 | for (;;) { |
493 | uint32_t i = length; | |
494 | uint32_t p = addr; | |
495 | while (i-- > 0) | |
496 | z80_write(p++, data); | |
497 | } | |
498 | } | |
5480dc65 L |
499 | |
500 | //#define CONFIG_SYS_ALT_MEMTEST | |
72f58822 L |
501 | |
502 | #ifdef CONFIG_CMD_MEMTEST | |
5480dc65 | 503 | static uint32_t mem_test_alt(uint32_t start_addr, uint32_t end_addr) |
72f58822 | 504 | { |
5480dc65 L |
505 | uint32_t addr; |
506 | uint32_t dummy; | |
72f58822 | 507 | uint32_t errs = 0; |
5480dc65 L |
508 | uint32_t offset; |
509 | uint32_t test_offset; | |
510 | uint8_t pattern; | |
511 | uint8_t anti_pattern; | |
512 | uint8_t temp; | |
513 | uint32_t num_bytes; | |
514 | ||
515 | static const FLASH uint8_t bitpattern[] = { | |
516 | 0x01, /* single bit */ | |
517 | 0x03, /* two adjacent bits */ | |
518 | 0x07, /* three adjacent bits */ | |
519 | 0x0F, /* four adjacent bits */ | |
520 | 0x05, /* two non-adjacent bits */ | |
521 | 0x15, /* three non-adjacent bits */ | |
522 | 0x55, /* four non-adjacent bits */ | |
523 | 0xaa, /* alternating 1/0 */ | |
72f58822 L |
524 | }; |
525 | ||
72f58822 L |
526 | /* |
527 | * Data line test: write a pattern to the first | |
528 | * location, write the 1's complement to a 'parking' | |
529 | * address (changes the state of the data bus so a | |
530 | * floating bus doesn't give a false OK), and then | |
531 | * read the value back. Note that we read it back | |
532 | * into a variable because the next time we read it, | |
533 | * it might be right (been there, tough to explain to | |
534 | * the quality guys why it prints a failure when the | |
535 | * "is" and "should be" are obviously the same in the | |
536 | * error message). | |
537 | * | |
538 | * Rather than exhaustively testing, we test some | |
539 | * patterns by shifting '1' bits through a field of | |
540 | * '0's and '0' bits through a field of '1's (i.e. | |
541 | * pattern and ~pattern). | |
542 | */ | |
5480dc65 L |
543 | addr = start_addr; |
544 | dummy = start_addr+1; | |
545 | for (unsigned int j = 0; j < ARRAY_SIZE(bitpattern); j++) { | |
546 | pattern = bitpattern[j]; | |
547 | for (; pattern != 0; pattern <<= 1) { | |
548 | anti_pattern = ~pattern; | |
549 | z80_write(addr, pattern); | |
550 | z80_write(dummy, anti_pattern); /* clear the test data off the bus */ | |
551 | temp = z80_read(addr); | |
552 | if (temp != pattern) { | |
69988dc1 | 553 | printf_P(PSTR("FAILURE (data line): " |
5480dc65 L |
554 | "expected %02x, actual %02x\n"), |
555 | pattern, temp); | |
72f58822 | 556 | errs++; |
72f58822 | 557 | } |
5480dc65 L |
558 | z80_write(addr, anti_pattern); |
559 | z80_write(dummy, pattern); /* clear the test data off the bus */ | |
560 | temp = z80_read(addr); | |
561 | if (temp != anti_pattern) { | |
69988dc1 | 562 | printf_P(PSTR("FAILURE (data line): " |
5480dc65 L |
563 | "Is %02x, should be %02x\n"), |
564 | temp, anti_pattern); | |
72f58822 | 565 | errs++; |
72f58822 L |
566 | } |
567 | } | |
5480dc65 L |
568 | |
569 | if (ctrlc()) | |
570 | return -1; | |
72f58822 L |
571 | } |
572 | ||
5480dc65 L |
573 | if (errs) |
574 | return errs; | |
575 | ||
72f58822 L |
576 | /* |
577 | * Based on code whose Original Author and Copyright | |
578 | * information follows: Copyright (c) 1998 by Michael | |
579 | * Barr. This software is placed into the public | |
580 | * domain and may be used for any purpose. However, | |
581 | * this notice must not be changed or removed and no | |
582 | * warranty is either expressed or implied by its | |
583 | * publication or distribution. | |
584 | */ | |
585 | ||
586 | /* | |
587 | * Address line test | |
588 | ||
589 | * Description: Test the address bus wiring in a | |
590 | * memory region by performing a walking | |
591 | * 1's test on the relevant bits of the | |
592 | * address and checking for aliasing. | |
593 | * This test will find single-bit | |
594 | * address failures such as stuck-high, | |
595 | * stuck-low, and shorted pins. The base | |
596 | * address and size of the region are | |
597 | * selected by the caller. | |
598 | ||
599 | * Notes: For best results, the selected base | |
600 | * address should have enough LSB 0's to | |
601 | * guarantee single address bit changes. | |
602 | * For example, to test a 64-Kbyte | |
603 | * region, select a base address on a | |
604 | * 64-Kbyte boundary. Also, select the | |
605 | * region size as a power-of-two if at | |
606 | * all possible. | |
607 | * | |
608 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
609 | */ | |
72f58822 | 610 | |
5480dc65 L |
611 | num_bytes = (end_addr - start_addr) / sizeof(uint8_t); |
612 | ||
613 | pattern = 0xaa; | |
614 | anti_pattern = 0x55; | |
615 | ||
616 | // debug("## %s:%d: length = 0x%.5lx\n", __func__, __LINE__, num_bytes); | |
72f58822 L |
617 | /* |
618 | * Write the default pattern at each of the | |
619 | * power-of-two offsets. | |
620 | */ | |
5480dc65 L |
621 | for (offset = 1; offset < num_bytes; offset <<= 1) |
622 | z80_write(addr+offset, pattern); | |
72f58822 L |
623 | |
624 | /* | |
625 | * Check for address bits stuck high. | |
626 | */ | |
5480dc65 | 627 | z80_write(start_addr, anti_pattern); |
72f58822 | 628 | |
5480dc65 L |
629 | for (offset = 1; offset < num_bytes; offset <<= 1) { |
630 | temp = z80_read(start_addr + offset); | |
72f58822 | 631 | if (temp != pattern) { |
5480dc65 L |
632 | printf_P(PSTR("FAILURE: Address bit stuck high @ 0x%.5lx:" |
633 | " expected 0x%.2x, actual 0x%.2x\n"), | |
634 | start_addr + offset, pattern, temp); | |
72f58822 L |
635 | errs++; |
636 | if (ctrlc()) | |
637 | return -1; | |
638 | } | |
639 | } | |
5480dc65 | 640 | z80_write(start_addr, pattern); |
72f58822 L |
641 | |
642 | /* | |
643 | * Check for addr bits stuck low or shorted. | |
644 | */ | |
5480dc65 L |
645 | for (test_offset = 1; test_offset < num_bytes; test_offset <<= 1) { |
646 | z80_write(start_addr + test_offset, anti_pattern); | |
72f58822 | 647 | |
5480dc65 L |
648 | for (offset = 1; offset < num_bytes; offset <<= 1) { |
649 | temp = z80_read(start_addr + offset); | |
72f58822 | 650 | if ((temp != pattern) && (offset != test_offset)) { |
5480dc65 L |
651 | printf_P(PSTR("FAILURE: Address bit stuck low or shorted" |
652 | " @ 0x%.5lx: expected 0x%.2x, actual 0x%.2x\n"), | |
653 | start_addr + offset, pattern, temp); | |
72f58822 L |
654 | errs++; |
655 | if (ctrlc()) | |
656 | return -1; | |
657 | } | |
658 | } | |
5480dc65 | 659 | z80_write(start_addr + test_offset, pattern); |
72f58822 L |
660 | } |
661 | ||
5480dc65 L |
662 | if (errs) |
663 | return errs; | |
664 | ||
72f58822 L |
665 | /* |
666 | * Description: Test the integrity of a physical | |
667 | * memory device by performing an | |
668 | * increment/decrement test over the | |
669 | * entire region. In the process every | |
670 | * storage bit in the device is tested | |
671 | * as a zero and a one. The base address | |
672 | * and the size of the region are | |
673 | * selected by the caller. | |
674 | * | |
675 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
676 | */ | |
5480dc65 | 677 | num_bytes++; |
72f58822 L |
678 | |
679 | /* | |
680 | * Fill memory with a known pattern. | |
681 | */ | |
5480dc65 L |
682 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) |
683 | z80_write(addr, pattern); | |
72f58822 L |
684 | |
685 | /* | |
686 | * Check each location and invert it for the second pass. | |
687 | */ | |
5480dc65 L |
688 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { |
689 | temp = z80_read(addr); | |
72f58822 | 690 | if (temp != pattern) { |
5480dc65 L |
691 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" |
692 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
693 | addr, pattern, temp); | |
72f58822 L |
694 | errs++; |
695 | if (ctrlc()) | |
696 | return -1; | |
697 | } | |
698 | ||
699 | anti_pattern = ~pattern; | |
5480dc65 | 700 | z80_write(addr, anti_pattern); |
72f58822 L |
701 | } |
702 | ||
703 | /* | |
704 | * Check each location for the inverted pattern and zero it. | |
705 | */ | |
5480dc65 | 706 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { |
72f58822 | 707 | anti_pattern = ~pattern; |
5480dc65 | 708 | temp = z80_read(addr); |
72f58822 | 709 | if (temp != anti_pattern) { |
5480dc65 L |
710 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" |
711 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
712 | start_addr, anti_pattern, temp); | |
72f58822 L |
713 | errs++; |
714 | if (ctrlc()) | |
715 | return -1; | |
716 | } | |
5480dc65 | 717 | z80_write(addr, 0); |
72f58822 L |
718 | } |
719 | ||
5480dc65 | 720 | return errs; |
72f58822 L |
721 | } |
722 | ||
723 | /* | |
724 | * Perform a memory test. A more complete alternative test can be | |
725 | * configured using CONFIG_SYS_ALT_MEMTEST. The complete test loops until | |
726 | * interrupted by ctrl-c or by a failure of one of the sub-tests. | |
727 | */ | |
d0581f88 | 728 | command_ret_t do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc, |
72f58822 L |
729 | char * const argv[]) |
730 | { | |
5480dc65 L |
731 | uint32_t start = 0; |
732 | uint32_t end; | |
733 | unsigned int iteration_limit = 0; | |
734 | unsigned int iteration; | |
735 | uint32_t errs = 0; /* number of errors */ | |
72f58822 | 736 | int ret; |
5480dc65 L |
737 | |
738 | (void) cmdtp; | |
739 | (void) flag; | |
72f58822 L |
740 | |
741 | if (argc > 1) | |
742 | start = strtoul(argv[1], NULL, 16); | |
72f58822 L |
743 | |
744 | if (argc > 2) | |
745 | end = strtoul(argv[2], NULL, 16); | |
746 | else | |
5480dc65 | 747 | end = CONFIG_SYS_RAMSIZE_MAX - 1; |
72f58822 L |
748 | |
749 | if (argc > 3) | |
5480dc65 | 750 | iteration_limit = (unsigned int) strtoul(argv[3], NULL, 16); |
72f58822 | 751 | |
5480dc65 L |
752 | printf_P(PSTR("Testing %05lx ... %05lx:\n"), start, end); |
753 | // debug("## %s:%d: start %#05lx end %#05lx\n", __func__, __LINE__, start, end); | |
72f58822 | 754 | |
5480dc65 | 755 | clear_ctrlc(); /* forget any previous Control C */ |
72f58822 | 756 | |
72f58822 L |
757 | for (iteration = 0; |
758 | !iteration_limit || iteration < iteration_limit; | |
759 | iteration++) { | |
72f58822 | 760 | |
69988dc1 | 761 | printf_P(PSTR("Iteration: %6d\r"), iteration + 1); |
5480dc65 L |
762 | // debug("\n"); |
763 | ||
764 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
765 | my_puts_P(PSTR("Bus timeout\n")); | |
766 | return CMD_RET_FAILURE; | |
72f58822 | 767 | } |
5480dc65 L |
768 | errs += mem_test_alt(start, end); |
769 | z80_bus_cmd(Release); | |
770 | ||
771 | if (had_ctrlc() || ctrlc()) { | |
72f58822 | 772 | break; |
5480dc65 | 773 | } |
72f58822 L |
774 | } |
775 | ||
5480dc65 | 776 | if (had_ctrlc()) { |
72f58822 | 777 | /* Memory test was aborted - write a newline to finish off */ |
5480dc65 L |
778 | putchar('\n'); |
779 | ret = CMD_RET_FAILURE; | |
72f58822 | 780 | } else { |
69988dc1 | 781 | printf_P(PSTR("Tested %d iteration(s) with %lu errors.\n"), |
72f58822 | 782 | iteration, errs); |
5480dc65 | 783 | ret = errs ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
72f58822 L |
784 | } |
785 | ||
5480dc65 | 786 | return ret; |
72f58822 L |
787 | } |
788 | #endif /* CONFIG_CMD_MEMTEST */ |