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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" |
5480dc65 | 25 | #include "timer.h" |
72f58822 | 26 | #include "z80-if.h" |
5480dc65 | 27 | #include "debug.h" |
72f58822 | 28 | |
72f58822 L |
29 | |
30 | #ifndef CONFIG_SYS_MEMTEST_SCRATCH | |
31 | #define CONFIG_SYS_MEMTEST_SCRATCH 0 | |
32 | #endif | |
33 | ||
72f58822 L |
34 | /* Display values from last command. |
35 | * Memory modify remembered values are different from display memory. | |
36 | */ | |
37 | static uint32_t dp_last_addr; | |
38 | static uint32_t dp_last_length = 0x100; | |
39 | static uint32_t mm_last_addr; | |
40 | ||
41 | static uint32_t base_address = 0; | |
42 | ||
43 | /*--------------------------------------------------------------------------*/ | |
44 | ||
d9d8de47 | 45 | int z180_read_buf(uint8_t *buf, uint32_t addr, uint8_t count) |
e39cd2a2 | 46 | { |
d9d8de47 L |
47 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) |
48 | return -1; | |
49 | ||
50 | z80_read_block (buf, addr, count); | |
51 | z80_bus_cmd(Release); | |
52 | return 0; | |
72f58822 L |
53 | } |
54 | ||
72f58822 L |
55 | /*--------------------------------------------------------------------------*/ |
56 | ||
57 | /* Memory Display | |
58 | * | |
59 | * Syntax: | |
60 | * md {addr} {len} | |
61 | */ | |
d0581f88 | 62 | command_ret_t do_mem_md(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
63 | { |
64 | uint32_t addr, length; | |
6035a17b | 65 | |
72f58822 L |
66 | (void) cmdtp; |
67 | ||
6035a17b | 68 | #if 0 |
72f58822 L |
69 | printf_P(PSTR("flag: %d, argc: %d"), flag, argc); |
70 | for (int i = 0; i < argc; i++) { | |
71 | printf_P(PSTR(", argv[%d]: %s"), i, argv[i] ? argv[i] : "<NULL>"); | |
72 | } | |
73 | putchar('\n'); | |
74 | #endif | |
75 | ||
76 | /* We use the last specified parameters, unless new ones are | |
77 | * entered. | |
78 | */ | |
79 | addr = dp_last_addr; | |
80 | length = dp_last_length; | |
81 | ||
82 | if (argc < 2) | |
83 | return CMD_RET_USAGE; | |
84 | ||
85 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
86 | /* Address is specified since argc > 1 */ | |
87 | addr = strtoul(argv[1], NULL, 16); | |
88 | addr += base_address; | |
89 | ||
90 | /* If another parameter, it is the length to display. */ | |
91 | if (argc > 2) | |
92 | length = strtoul(argv[2], NULL, 16); | |
93 | } | |
94 | ||
95 | /* Print the lines. */ | |
d9d8de47 L |
96 | int ret = dump_mem(addr, addr, length, z180_read_buf, NULL); |
97 | if (ret == -2) { /* TODO: Error codes */ | |
98 | my_puts_P(PSTR("Bus timeout\n")); | |
99 | return CMD_RET_FAILURE; | |
100 | } | |
72f58822 | 101 | |
d9d8de47 L |
102 | if (ret >= 0) { |
103 | dp_last_addr = addr + length; | |
104 | dp_last_length = length; | |
105 | } | |
d0581f88 | 106 | return CMD_RET_SUCCESS; |
72f58822 L |
107 | } |
108 | ||
d0581f88 L |
109 | /* Modify memory. |
110 | * | |
111 | * Syntax: | |
112 | * mm {addr} | |
113 | * nm {addr} | |
114 | */ | |
115 | static command_ret_t | |
116 | mod_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const argv[]) | |
117 | { | |
118 | uint32_t addr; | |
119 | uint8_t data; | |
120 | int nbytes; | |
121 | ||
122 | (void) cmdtp; | |
123 | ||
124 | if (argc != 2) | |
125 | return CMD_RET_USAGE; | |
126 | ||
127 | /* We use the last specified parameters, unless new ones are | |
128 | * entered. | |
129 | */ | |
130 | addr = mm_last_addr; | |
131 | ||
132 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
133 | /* New command specified. | |
134 | */ | |
135 | ||
136 | /* Address is specified since argc > 1 | |
137 | */ | |
138 | addr = strtoul(argv[1], NULL, 16); | |
139 | addr += base_address; | |
140 | } | |
141 | ||
142 | /* Print the address, followed by value. Then accept input for | |
143 | * the next value. A non-converted value exits. | |
144 | */ | |
145 | do { | |
ea6971b8 L |
146 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
147 | my_puts_P(PSTR("Bus timeout\n")); | |
148 | return CMD_RET_FAILURE; | |
149 | } | |
d0581f88 | 150 | data = z80_read(addr); |
d0581f88 | 151 | z80_bus_cmd(Release); |
ea6971b8 | 152 | printf_P(PSTR("%05lx: %02x"), addr, data); |
d0581f88 | 153 | |
8ed66016 | 154 | nbytes = cli_readline(PSTR(" ? "), 0); |
d0581f88 L |
155 | if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) { |
156 | /* <CR> pressed as only input, don't modify current | |
157 | * location and move to next. "-" pressed will go back. | |
158 | */ | |
159 | if (incrflag) | |
160 | addr += nbytes ? -1 : 1; | |
161 | nbytes = 1; | |
ad9bc17c L |
162 | |
163 | } else { | |
d0581f88 L |
164 | char *endp; |
165 | data = strtoul(console_buffer, &endp, 16); | |
166 | nbytes = endp - console_buffer; | |
167 | if (nbytes) { | |
ea6971b8 L |
168 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
169 | my_puts_P(PSTR("Bus timeout\n")); | |
170 | return CMD_RET_FAILURE; | |
171 | } | |
d0581f88 L |
172 | z80_write(addr, data); |
173 | z80_bus_cmd(Release); | |
174 | if (incrflag) | |
175 | addr++; | |
176 | } | |
177 | } | |
178 | } while (nbytes); | |
179 | ||
180 | mm_last_addr = addr; | |
181 | return CMD_RET_SUCCESS; | |
182 | } | |
183 | ||
184 | ||
185 | command_ret_t do_mem_mm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
72f58822 L |
186 | { |
187 | return mod_mem (cmdtp, 1, flag, argc, argv); | |
188 | } | |
d0581f88 | 189 | command_ret_t do_mem_nm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
190 | { |
191 | return mod_mem (cmdtp, 0, flag, argc, argv); | |
192 | } | |
193 | ||
d0581f88 | 194 | command_ret_t do_mem_mw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
195 | { |
196 | uint8_t writeval; | |
197 | uint32_t addr, count; | |
198 | ||
199 | (void) cmdtp; | |
200 | (void) flag; | |
201 | ||
202 | if ((argc < 3) || (argc > 4)) | |
203 | return CMD_RET_USAGE; | |
204 | ||
205 | /* Address is specified since argc > 1 | |
206 | */ | |
207 | addr = strtoul(argv[1], NULL, 16); | |
208 | addr += base_address; | |
209 | ||
210 | /* Get the value to write. | |
211 | */ | |
212 | writeval = (uint8_t) strtoul(argv[2], NULL, 16); | |
213 | ||
214 | /* Count ? */ | |
215 | if (argc == 4) { | |
216 | count = strtoul(argv[3], NULL, 16); | |
217 | } else { | |
218 | count = 1; | |
219 | } | |
220 | ||
ea6971b8 L |
221 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
222 | my_puts_P(PSTR("Bus timeout\n")); | |
223 | return CMD_RET_FAILURE; | |
72f58822 | 224 | } |
ea6971b8 | 225 | z80_memset(addr, writeval, count); |
62f624d3 | 226 | z80_bus_cmd(Release); |
72f58822 | 227 | |
d0581f88 | 228 | return CMD_RET_SUCCESS; |
72f58822 L |
229 | } |
230 | ||
231 | #ifdef CONFIG_MX_CYCLIC | |
d0581f88 | 232 | command_ret_t do_mem_mdc ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 | 233 | { |
72f58822 | 234 | uint32_t count; |
5480dc65 L |
235 | uint32_t ts; |
236 | ||
237 | (void) cmdtp; | |
238 | (void) flag; | |
72f58822 L |
239 | |
240 | if (argc < 4) | |
241 | return CMD_RET_USAGE; | |
242 | ||
243 | count = strtoul(argv[3], NULL, 10); | |
244 | ||
5480dc65 | 245 | clear_ctrlc(); /* forget any previous Control C */ |
72f58822 | 246 | for (;;) { |
72f58822 | 247 | |
5480dc65 L |
248 | if (argv[0][1] == 'd') |
249 | do_mem_md (NULL, 0, 3, argv); | |
250 | else | |
251 | do_mem_mw (NULL, 0, 3, argv); | |
72f58822 | 252 | |
72f58822 L |
253 | |
254 | /* delay for <count> ms... */ | |
5480dc65 L |
255 | ts = get_timer(0); |
256 | do { | |
257 | /* check for ctrl-c to abort... */ | |
258 | if (had_ctrlc() || ctrlc()) { | |
259 | my_puts_P(PSTR("Abort\n")); | |
260 | return CMD_RET_SUCCESS; | |
261 | } | |
262 | } while (get_timer(ts) < count); | |
72f58822 L |
263 | } |
264 | ||
d0581f88 | 265 | return CMD_RET_SUCCESS; |
72f58822 L |
266 | } |
267 | #endif /* CONFIG_MX_CYCLIC */ | |
268 | ||
d0581f88 | 269 | command_ret_t do_mem_cmp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
270 | { |
271 | uint32_t addr1, addr2, count, ngood; | |
d0581f88 | 272 | command_ret_t rcode = CMD_RET_SUCCESS; |
72f58822 L |
273 | uint8_t byte1, byte2; |
274 | ||
275 | (void) cmdtp; | |
276 | (void) flag; | |
277 | ||
278 | if (argc != 4) | |
279 | return CMD_RET_USAGE; | |
280 | ||
281 | ||
282 | addr1 = strtoul(argv[1], NULL, 16); | |
283 | addr1 += base_address; | |
284 | addr2 = strtoul(argv[2], NULL, 16); | |
285 | addr2 += base_address; | |
286 | count = strtoul(argv[3], NULL, 16); | |
287 | ||
288 | for (ngood = 0; ngood < count; ++ngood) { | |
ea6971b8 L |
289 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
290 | my_puts_P(PSTR("Bus timeout\n")); | |
291 | rcode = CMD_RET_FAILURE; | |
292 | break; | |
293 | } | |
72f58822 L |
294 | byte1 = z80_read(addr1); |
295 | byte2 = z80_read(addr2); | |
62f624d3 | 296 | z80_bus_cmd(Release); |
72f58822 | 297 | if (byte1 != byte2) { |
6035a17b L |
298 | printf_P(PSTR("byte at 0x%05lx (%#02x) != " |
299 | "byte at 0x%05lx (%#02x)\n"), | |
72f58822 | 300 | addr1, byte1, addr2, byte2); |
d0581f88 | 301 | rcode = CMD_RET_FAILURE; |
72f58822 L |
302 | break; |
303 | } | |
304 | addr1++; | |
305 | addr2++; | |
306 | ||
307 | /* check for ctrl-c to abort... */ | |
308 | if (ctrlc()) { | |
69988dc1 | 309 | my_puts_P(PSTR("Abort\n")); |
d0581f88 | 310 | return CMD_RET_SUCCESS; |
72f58822 L |
311 | } |
312 | } | |
313 | ||
69988dc1 | 314 | printf_P(PSTR("Total of %ld byte(s) (0x%lx) were the same\n"), ngood, ngood); |
72f58822 L |
315 | return rcode; |
316 | } | |
317 | ||
d0581f88 | 318 | command_ret_t do_mem_cp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
319 | { |
320 | uint32_t src, dest, count; | |
321 | int_fast8_t step; | |
322 | ||
323 | (void) cmdtp; | |
324 | (void) flag; | |
325 | ||
326 | if (argc != 4) | |
327 | return CMD_RET_USAGE; | |
328 | ||
329 | src = strtoul(argv[1], NULL, 16); | |
330 | src += base_address; | |
331 | dest = strtoul(argv[2], NULL, 16); | |
332 | dest += base_address; | |
333 | count = strtoul(argv[3], NULL, 16); | |
334 | ||
335 | if (count == 0) { | |
69988dc1 | 336 | my_puts_P(PSTR("Zero length?\n")); |
d0581f88 | 337 | return CMD_RET_FAILURE; |
72f58822 | 338 | } |
6035a17b | 339 | |
72f58822 L |
340 | if (dest > src) { |
341 | src += count - 1; | |
342 | dest += count - 1; | |
343 | step = -1; | |
344 | } else | |
345 | step = 1; | |
346 | ||
347 | while (count-- > 0) { | |
348 | uint8_t data; | |
ea6971b8 L |
349 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
350 | my_puts_P(PSTR("Bus timeout\n")); | |
351 | return CMD_RET_FAILURE; | |
352 | } | |
72f58822 L |
353 | data = z80_read(src); |
354 | z80_write(dest, data); | |
62f624d3 | 355 | z80_bus_cmd(Release); |
72f58822 L |
356 | src += step; |
357 | dest += step; | |
358 | ||
359 | /* check for ctrl-c to abort... */ | |
360 | if (ctrlc()) { | |
69988dc1 | 361 | my_puts_P(PSTR("Abort\n")); |
d0581f88 | 362 | return CMD_RET_SUCCESS; |
72f58822 L |
363 | } |
364 | } | |
d0581f88 | 365 | return CMD_RET_SUCCESS; |
72f58822 L |
366 | } |
367 | ||
d0581f88 | 368 | command_ret_t do_mem_base(cmd_tbl_t *cmdtp, int flag, int argc, |
72f58822 L |
369 | char * const argv[]) |
370 | { | |
371 | (void) cmdtp; | |
372 | (void) flag; | |
373 | ||
374 | if (argc > 1) { | |
375 | /* Set new base address. */ | |
376 | base_address = strtoul(argv[1], NULL, 16); | |
377 | } | |
378 | /* Print the current base address. */ | |
69988dc1 | 379 | printf_P(PSTR("Base Address: 0x%05lx\n"), base_address); |
d0581f88 | 380 | return CMD_RET_SUCCESS; |
72f58822 L |
381 | } |
382 | ||
d0581f88 | 383 | command_ret_t do_mem_loop(cmd_tbl_t *cmdtp, int flag, int argc, |
72f58822 L |
384 | char * const argv[]) |
385 | { | |
386 | uint32_t addr, length; | |
387 | ||
388 | (void) cmdtp; | |
389 | (void) flag; | |
390 | ||
391 | if (argc < 3) | |
392 | return CMD_RET_USAGE; | |
393 | ||
394 | /* Address is always specified. */ | |
395 | addr = strtoul(argv[1], NULL, 16); | |
396 | ||
397 | /* Length is the number of bytes. */ | |
398 | length = strtoul(argv[2], NULL, 16); | |
399 | ||
400 | ||
401 | /* We want to optimize the loops to run as fast as possible. | |
402 | * If we have only one object, just run infinite loops. | |
403 | */ | |
404 | if (length == 1) { | |
ea6971b8 L |
405 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
406 | my_puts_P(PSTR("Bus timeout\n")); | |
407 | return CMD_RET_FAILURE; | |
408 | } | |
5480dc65 | 409 | cli(); |
72f58822 L |
410 | for (;;) |
411 | z80_read(addr); | |
72f58822 L |
412 | } |
413 | ||
ea6971b8 L |
414 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
415 | my_puts_P(PSTR("Bus timeout\n")); | |
416 | return CMD_RET_FAILURE; | |
417 | } | |
5480dc65 | 418 | cli(); |
72f58822 L |
419 | for (;;) { |
420 | uint32_t i = length; | |
421 | uint32_t p = addr; | |
422 | while (i-- > 0) | |
423 | z80_read(p++); | |
424 | } | |
72f58822 | 425 | |
d0581f88 | 426 | return CMD_RET_SUCCESS; |
72f58822 L |
427 | } |
428 | ||
d0581f88 | 429 | command_ret_t do_mem_loopw (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
72f58822 L |
430 | { |
431 | uint32_t addr, length; | |
432 | uint8_t data; | |
433 | ||
434 | (void) cmdtp; | |
435 | (void) flag; | |
436 | ||
437 | if (argc < 4) | |
438 | return CMD_RET_USAGE; | |
439 | ||
440 | /* Address is always specified. */ | |
441 | addr = strtoul(argv[1], NULL, 16); | |
442 | ||
443 | /* Length is the number of bytes. */ | |
444 | length = strtoul(argv[2], NULL, 16); | |
445 | ||
446 | data = strtoul(argv[3], NULL, 16); | |
447 | ||
5480dc65 L |
448 | /* |
449 | * We want to optimize the loops to run as fast as possible. | |
72f58822 L |
450 | * If we have only one object, just run infinite loops. |
451 | */ | |
452 | if (length == 1) { | |
ea6971b8 L |
453 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
454 | my_puts_P(PSTR("Bus timeout\n")); | |
455 | return CMD_RET_FAILURE; | |
456 | } | |
5480dc65 | 457 | cli(); |
72f58822 L |
458 | for (;;) |
459 | z80_write(addr, data); | |
460 | } | |
461 | ||
ea6971b8 L |
462 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
463 | my_puts_P(PSTR("Bus timeout\n")); | |
464 | return CMD_RET_FAILURE; | |
465 | } | |
5480dc65 | 466 | cli(); |
72f58822 L |
467 | for (;;) { |
468 | uint32_t i = length; | |
469 | uint32_t p = addr; | |
470 | while (i-- > 0) | |
471 | z80_write(p++, data); | |
472 | } | |
473 | } | |
5480dc65 L |
474 | |
475 | //#define CONFIG_SYS_ALT_MEMTEST | |
72f58822 L |
476 | |
477 | #ifdef CONFIG_CMD_MEMTEST | |
5480dc65 | 478 | static uint32_t mem_test_alt(uint32_t start_addr, uint32_t end_addr) |
72f58822 | 479 | { |
5480dc65 L |
480 | uint32_t addr; |
481 | uint32_t dummy; | |
72f58822 | 482 | uint32_t errs = 0; |
5480dc65 L |
483 | uint32_t offset; |
484 | uint32_t test_offset; | |
485 | uint8_t pattern; | |
486 | uint8_t anti_pattern; | |
487 | uint8_t temp; | |
488 | uint32_t num_bytes; | |
489 | ||
490 | static const FLASH uint8_t bitpattern[] = { | |
491 | 0x01, /* single bit */ | |
492 | 0x03, /* two adjacent bits */ | |
493 | 0x07, /* three adjacent bits */ | |
494 | 0x0F, /* four adjacent bits */ | |
495 | 0x05, /* two non-adjacent bits */ | |
496 | 0x15, /* three non-adjacent bits */ | |
497 | 0x55, /* four non-adjacent bits */ | |
498 | 0xaa, /* alternating 1/0 */ | |
72f58822 L |
499 | }; |
500 | ||
72f58822 L |
501 | /* |
502 | * Data line test: write a pattern to the first | |
503 | * location, write the 1's complement to a 'parking' | |
504 | * address (changes the state of the data bus so a | |
505 | * floating bus doesn't give a false OK), and then | |
506 | * read the value back. Note that we read it back | |
507 | * into a variable because the next time we read it, | |
508 | * it might be right (been there, tough to explain to | |
509 | * the quality guys why it prints a failure when the | |
510 | * "is" and "should be" are obviously the same in the | |
511 | * error message). | |
512 | * | |
513 | * Rather than exhaustively testing, we test some | |
514 | * patterns by shifting '1' bits through a field of | |
515 | * '0's and '0' bits through a field of '1's (i.e. | |
516 | * pattern and ~pattern). | |
517 | */ | |
5480dc65 L |
518 | addr = start_addr; |
519 | dummy = start_addr+1; | |
520 | for (unsigned int j = 0; j < ARRAY_SIZE(bitpattern); j++) { | |
521 | pattern = bitpattern[j]; | |
522 | for (; pattern != 0; pattern <<= 1) { | |
523 | anti_pattern = ~pattern; | |
524 | z80_write(addr, pattern); | |
525 | z80_write(dummy, anti_pattern); /* clear the test data off the bus */ | |
526 | temp = z80_read(addr); | |
527 | if (temp != pattern) { | |
69988dc1 | 528 | printf_P(PSTR("FAILURE (data line): " |
5480dc65 L |
529 | "expected %02x, actual %02x\n"), |
530 | pattern, temp); | |
72f58822 | 531 | errs++; |
72f58822 | 532 | } |
5480dc65 L |
533 | z80_write(addr, anti_pattern); |
534 | z80_write(dummy, pattern); /* clear the test data off the bus */ | |
535 | temp = z80_read(addr); | |
536 | if (temp != anti_pattern) { | |
69988dc1 | 537 | printf_P(PSTR("FAILURE (data line): " |
5480dc65 L |
538 | "Is %02x, should be %02x\n"), |
539 | temp, anti_pattern); | |
72f58822 | 540 | errs++; |
72f58822 L |
541 | } |
542 | } | |
5480dc65 L |
543 | |
544 | if (ctrlc()) | |
545 | return -1; | |
72f58822 L |
546 | } |
547 | ||
5480dc65 L |
548 | if (errs) |
549 | return errs; | |
550 | ||
72f58822 L |
551 | /* |
552 | * Based on code whose Original Author and Copyright | |
553 | * information follows: Copyright (c) 1998 by Michael | |
554 | * Barr. This software is placed into the public | |
555 | * domain and may be used for any purpose. However, | |
556 | * this notice must not be changed or removed and no | |
557 | * warranty is either expressed or implied by its | |
558 | * publication or distribution. | |
559 | */ | |
560 | ||
561 | /* | |
562 | * Address line test | |
563 | ||
564 | * Description: Test the address bus wiring in a | |
565 | * memory region by performing a walking | |
566 | * 1's test on the relevant bits of the | |
567 | * address and checking for aliasing. | |
568 | * This test will find single-bit | |
569 | * address failures such as stuck-high, | |
570 | * stuck-low, and shorted pins. The base | |
571 | * address and size of the region are | |
572 | * selected by the caller. | |
573 | ||
574 | * Notes: For best results, the selected base | |
575 | * address should have enough LSB 0's to | |
576 | * guarantee single address bit changes. | |
577 | * For example, to test a 64-Kbyte | |
578 | * region, select a base address on a | |
579 | * 64-Kbyte boundary. Also, select the | |
580 | * region size as a power-of-two if at | |
581 | * all possible. | |
582 | * | |
583 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
584 | */ | |
72f58822 | 585 | |
5480dc65 L |
586 | num_bytes = (end_addr - start_addr) / sizeof(uint8_t); |
587 | ||
588 | pattern = 0xaa; | |
589 | anti_pattern = 0x55; | |
590 | ||
591 | // debug("## %s:%d: length = 0x%.5lx\n", __func__, __LINE__, num_bytes); | |
72f58822 L |
592 | /* |
593 | * Write the default pattern at each of the | |
594 | * power-of-two offsets. | |
595 | */ | |
5480dc65 L |
596 | for (offset = 1; offset < num_bytes; offset <<= 1) |
597 | z80_write(addr+offset, pattern); | |
72f58822 L |
598 | |
599 | /* | |
600 | * Check for address bits stuck high. | |
601 | */ | |
5480dc65 | 602 | z80_write(start_addr, anti_pattern); |
72f58822 | 603 | |
5480dc65 L |
604 | for (offset = 1; offset < num_bytes; offset <<= 1) { |
605 | temp = z80_read(start_addr + offset); | |
72f58822 | 606 | if (temp != pattern) { |
5480dc65 L |
607 | printf_P(PSTR("FAILURE: Address bit stuck high @ 0x%.5lx:" |
608 | " expected 0x%.2x, actual 0x%.2x\n"), | |
609 | start_addr + offset, pattern, temp); | |
72f58822 L |
610 | errs++; |
611 | if (ctrlc()) | |
612 | return -1; | |
613 | } | |
614 | } | |
5480dc65 | 615 | z80_write(start_addr, pattern); |
72f58822 L |
616 | |
617 | /* | |
618 | * Check for addr bits stuck low or shorted. | |
619 | */ | |
5480dc65 L |
620 | for (test_offset = 1; test_offset < num_bytes; test_offset <<= 1) { |
621 | z80_write(start_addr + test_offset, anti_pattern); | |
72f58822 | 622 | |
5480dc65 L |
623 | for (offset = 1; offset < num_bytes; offset <<= 1) { |
624 | temp = z80_read(start_addr + offset); | |
72f58822 | 625 | if ((temp != pattern) && (offset != test_offset)) { |
5480dc65 L |
626 | printf_P(PSTR("FAILURE: Address bit stuck low or shorted" |
627 | " @ 0x%.5lx: expected 0x%.2x, actual 0x%.2x\n"), | |
628 | start_addr + offset, pattern, temp); | |
72f58822 L |
629 | errs++; |
630 | if (ctrlc()) | |
631 | return -1; | |
632 | } | |
633 | } | |
5480dc65 | 634 | z80_write(start_addr + test_offset, pattern); |
72f58822 L |
635 | } |
636 | ||
5480dc65 L |
637 | if (errs) |
638 | return errs; | |
639 | ||
72f58822 L |
640 | /* |
641 | * Description: Test the integrity of a physical | |
642 | * memory device by performing an | |
643 | * increment/decrement test over the | |
644 | * entire region. In the process every | |
645 | * storage bit in the device is tested | |
646 | * as a zero and a one. The base address | |
647 | * and the size of the region are | |
648 | * selected by the caller. | |
649 | * | |
650 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
651 | */ | |
5480dc65 | 652 | num_bytes++; |
72f58822 L |
653 | |
654 | /* | |
655 | * Fill memory with a known pattern. | |
656 | */ | |
5480dc65 L |
657 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) |
658 | z80_write(addr, pattern); | |
72f58822 L |
659 | |
660 | /* | |
661 | * Check each location and invert it for the second pass. | |
662 | */ | |
5480dc65 L |
663 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { |
664 | temp = z80_read(addr); | |
72f58822 | 665 | if (temp != pattern) { |
5480dc65 L |
666 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" |
667 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
668 | addr, pattern, temp); | |
72f58822 L |
669 | errs++; |
670 | if (ctrlc()) | |
671 | return -1; | |
672 | } | |
673 | ||
674 | anti_pattern = ~pattern; | |
5480dc65 | 675 | z80_write(addr, anti_pattern); |
72f58822 L |
676 | } |
677 | ||
678 | /* | |
679 | * Check each location for the inverted pattern and zero it. | |
680 | */ | |
5480dc65 | 681 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { |
72f58822 | 682 | anti_pattern = ~pattern; |
5480dc65 | 683 | temp = z80_read(addr); |
72f58822 | 684 | if (temp != anti_pattern) { |
5480dc65 L |
685 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" |
686 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
687 | start_addr, anti_pattern, temp); | |
72f58822 L |
688 | errs++; |
689 | if (ctrlc()) | |
690 | return -1; | |
691 | } | |
5480dc65 | 692 | z80_write(addr, 0); |
72f58822 L |
693 | } |
694 | ||
5480dc65 | 695 | return errs; |
72f58822 L |
696 | } |
697 | ||
698 | /* | |
699 | * Perform a memory test. A more complete alternative test can be | |
700 | * configured using CONFIG_SYS_ALT_MEMTEST. The complete test loops until | |
701 | * interrupted by ctrl-c or by a failure of one of the sub-tests. | |
702 | */ | |
d0581f88 | 703 | command_ret_t do_mem_mtest(cmd_tbl_t *cmdtp, int flag, int argc, |
72f58822 L |
704 | char * const argv[]) |
705 | { | |
5480dc65 L |
706 | uint32_t start = 0; |
707 | uint32_t end; | |
708 | unsigned int iteration_limit = 0; | |
709 | unsigned int iteration; | |
710 | uint32_t errs = 0; /* number of errors */ | |
72f58822 | 711 | int ret; |
5480dc65 L |
712 | |
713 | (void) cmdtp; | |
714 | (void) flag; | |
72f58822 L |
715 | |
716 | if (argc > 1) | |
717 | start = strtoul(argv[1], NULL, 16); | |
72f58822 L |
718 | |
719 | if (argc > 2) | |
720 | end = strtoul(argv[2], NULL, 16); | |
721 | else | |
5480dc65 | 722 | end = CONFIG_SYS_RAMSIZE_MAX - 1; |
72f58822 L |
723 | |
724 | if (argc > 3) | |
5480dc65 | 725 | iteration_limit = (unsigned int) strtoul(argv[3], NULL, 16); |
72f58822 | 726 | |
5480dc65 L |
727 | printf_P(PSTR("Testing %05lx ... %05lx:\n"), start, end); |
728 | // debug("## %s:%d: start %#05lx end %#05lx\n", __func__, __LINE__, start, end); | |
72f58822 | 729 | |
5480dc65 | 730 | clear_ctrlc(); /* forget any previous Control C */ |
72f58822 | 731 | |
72f58822 L |
732 | for (iteration = 0; |
733 | !iteration_limit || iteration < iteration_limit; | |
734 | iteration++) { | |
72f58822 | 735 | |
69988dc1 | 736 | printf_P(PSTR("Iteration: %6d\r"), iteration + 1); |
5480dc65 L |
737 | // debug("\n"); |
738 | ||
739 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { | |
740 | my_puts_P(PSTR("Bus timeout\n")); | |
741 | return CMD_RET_FAILURE; | |
72f58822 | 742 | } |
5480dc65 L |
743 | errs += mem_test_alt(start, end); |
744 | z80_bus_cmd(Release); | |
745 | ||
746 | if (had_ctrlc() || ctrlc()) { | |
72f58822 | 747 | break; |
5480dc65 | 748 | } |
72f58822 L |
749 | } |
750 | ||
5480dc65 | 751 | if (had_ctrlc()) { |
72f58822 | 752 | /* Memory test was aborted - write a newline to finish off */ |
5480dc65 L |
753 | putchar('\n'); |
754 | ret = CMD_RET_FAILURE; | |
72f58822 | 755 | } else { |
69988dc1 | 756 | printf_P(PSTR("Tested %d iteration(s) with %lu errors.\n"), |
72f58822 | 757 | iteration, errs); |
5480dc65 | 758 | ret = errs ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
72f58822 L |
759 | } |
760 | ||
5480dc65 | 761 | return ret; |
72f58822 L |
762 | } |
763 | #endif /* CONFIG_CMD_MEMTEST */ |