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72f58822 | 1 | /* |
b35fcb2f | 2 | * (C) Copyright 2014,2018 Leo C. <erbl259-lmu@yahoo.de> |
35edb766 | 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 | ||
1e5609bf | 16 | #include "cmd_mem.h" |
5480dc65 | 17 | #include <avr/interrupt.h> |
72f58822 | 18 | |
72f58822 | 19 | #include "cli_readline.h" |
8f23e84c | 20 | #include "print-utils.h" |
72f58822 | 21 | #include "con-utils.h" |
32154e5a | 22 | #include "getopt-min.h" |
fcd2239e | 23 | #include "eval_arg.h" |
5480dc65 | 24 | #include "timer.h" |
72f58822 | 25 | #include "z80-if.h" |
5480dc65 | 26 | #include "debug.h" |
72f58822 | 27 | |
72f58822 L |
28 | |
29 | #ifndef CONFIG_SYS_MEMTEST_SCRATCH | |
30 | #define CONFIG_SYS_MEMTEST_SCRATCH 0 | |
31 | #endif | |
32 | ||
72f58822 L |
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 | ||
b35fcb2f | 44 | static ERRNUM z180_read_buf(uint8_t *buf, uint32_t addr, uint8_t count) |
e39cd2a2 | 45 | { |
d9d8de47 | 46 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) |
b35fcb2f | 47 | return EBUSTO; |
d9d8de47 L |
48 | |
49 | z80_read_block (buf, addr, count); | |
50 | z80_bus_cmd(Release); | |
b35fcb2f | 51 | return ESUCCESS; |
72f58822 L |
52 | } |
53 | ||
72f58822 L |
54 | /*--------------------------------------------------------------------------*/ |
55 | ||
1e5609bf L |
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 | ||
72f58822 L |
69 | /* Memory Display |
70 | * | |
71 | * Syntax: | |
72 | * md {addr} {len} | |
73 | */ | |
fcf1d5b3 | 74 | command_ret_t do_mem_md(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
75 | { |
76 | uint32_t addr, length; | |
6035a17b | 77 | |
72f58822 L |
78 | (void) cmdtp; |
79 | ||
6035a17b | 80 | #if 0 |
72f58822 L |
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 */ | |
fcd2239e | 99 | addr = eval_arg(argv[1], NULL); |
72f58822 L |
100 | addr += base_address; |
101 | ||
102 | /* If another parameter, it is the length to display. */ | |
103 | if (argc > 2) | |
fcd2239e | 104 | length = eval_arg(argv[2], NULL); |
72f58822 L |
105 | } |
106 | ||
107 | /* Print the lines. */ | |
b35fcb2f L |
108 | ERRNUM ret = dump_mem(addr, addr, length, z180_read_buf, NULL); |
109 | if (ret == EBUSTO) | |
110 | cmd_error(CMD_RET_FAILURE, ret, NULL); | |
72f58822 | 111 | |
b35fcb2f | 112 | if (ret == ESUCCESS) { |
d9d8de47 L |
113 | dp_last_addr = addr + length; |
114 | dp_last_length = length; | |
115 | } | |
d0581f88 | 116 | return CMD_RET_SUCCESS; |
72f58822 L |
117 | } |
118 | ||
d0581f88 L |
119 | /* Modify memory. |
120 | * | |
121 | * Syntax: | |
122 | * mm {addr} | |
123 | * nm {addr} | |
124 | */ | |
125 | static command_ret_t | |
fcf1d5b3 | 126 | mod_mem(cmd_tbl_t *cmdtp, int incrflag, uint_fast8_t flag, int argc, char * const argv[]) |
d0581f88 L |
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 | */ | |
fcd2239e | 148 | addr = eval_arg(argv[1], NULL); |
d0581f88 L |
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 { | |
b35fcb2f | 156 | z80_bus_request_or_exit(); |
d0581f88 | 157 | data = z80_read(addr); |
d0581f88 | 158 | z80_bus_cmd(Release); |
ea6971b8 | 159 | printf_P(PSTR("%05lx: %02x"), addr, data); |
d0581f88 | 160 | |
8ed66016 | 161 | nbytes = cli_readline(PSTR(" ? "), 0); |
d0581f88 L |
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; | |
ad9bc17c L |
169 | |
170 | } else { | |
d0581f88 | 171 | char *endp; |
fcd2239e | 172 | data = eval_arg(console_buffer, &endp); |
d0581f88 L |
173 | nbytes = endp - console_buffer; |
174 | if (nbytes) { | |
b35fcb2f | 175 | z80_bus_request_or_exit(); |
d0581f88 L |
176 | z80_write(addr, data); |
177 | z80_bus_cmd(Release); | |
178 | if (incrflag) | |
179 | addr++; | |
180 | } | |
181 | } | |
13e88ed5 | 182 | } while (nbytes > 0); |
d0581f88 L |
183 | |
184 | mm_last_addr = addr; | |
185 | return CMD_RET_SUCCESS; | |
186 | } | |
187 | ||
188 | ||
fcf1d5b3 | 189 | command_ret_t do_mem_mm(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
190 | { |
191 | return mod_mem (cmdtp, 1, flag, argc, argv); | |
192 | } | |
fcf1d5b3 | 193 | command_ret_t do_mem_nm(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
194 | { |
195 | return mod_mem (cmdtp, 0, flag, argc, argv); | |
196 | } | |
197 | ||
fcf1d5b3 | 198 | command_ret_t do_mem_mw(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 | 199 | { |
32154e5a L |
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 | ||
32154e5a L |
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 | 229 | /* Address and value are specified since (adjusted) argc >= 2 */ |
fcd2239e | 230 | addr = eval_arg(argv[optind++], NULL); |
72f58822 | 231 | addr += base_address; |
fcd2239e | 232 | writeval = eval_arg(argv[optind++], NULL); |
72f58822 L |
233 | |
234 | /* Count ? */ | |
32154e5a | 235 | if (argc == 3) |
fcd2239e | 236 | count = eval_arg(argv[optind], NULL); |
72f58822 | 237 | |
b35fcb2f | 238 | z80_bus_request_or_exit(); |
32154e5a L |
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 | } | |
62f624d3 | 247 | z80_bus_cmd(Release); |
72f58822 | 248 | |
d0581f88 | 249 | return CMD_RET_SUCCESS; |
72f58822 L |
250 | } |
251 | ||
252 | #ifdef CONFIG_MX_CYCLIC | |
fcf1d5b3 | 253 | command_ret_t do_mem_mdc ( cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 | 254 | { |
72f58822 | 255 | uint32_t count; |
5480dc65 L |
256 | uint32_t ts; |
257 | ||
258 | (void) cmdtp; | |
259 | (void) flag; | |
72f58822 | 260 | |
fcd2239e L |
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 | ||
fcd2239e | 269 | if (argc-optind != 4) |
72f58822 L |
270 | return CMD_RET_USAGE; |
271 | ||
fcd2239e | 272 | count = eval_arg(argv[optind + 3], NULL); |
72f58822 | 273 | |
5480dc65 | 274 | clear_ctrlc(); /* forget any previous Control C */ |
72f58822 | 275 | for (;;) { |
72f58822 | 276 | |
5480dc65 | 277 | if (argv[0][1] == 'd') |
fcd2239e | 278 | do_mem_md (NULL, 0, argc-1, argv); /* memory display */ |
5480dc65 | 279 | else |
fcd2239e | 280 | do_mem_mw (NULL, 0, argc-1, argv); /* memory write */ |
72f58822 | 281 | |
72f58822 L |
282 | |
283 | /* delay for <count> ms... */ | |
5480dc65 L |
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); | |
72f58822 L |
292 | } |
293 | ||
d0581f88 | 294 | return CMD_RET_SUCCESS; |
72f58822 L |
295 | } |
296 | #endif /* CONFIG_MX_CYCLIC */ | |
297 | ||
fcf1d5b3 | 298 | command_ret_t do_mem_cmp(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
299 | { |
300 | uint32_t addr1, addr2, count, ngood; | |
d0581f88 | 301 | command_ret_t rcode = CMD_RET_SUCCESS; |
72f58822 L |
302 | uint8_t byte1, byte2; |
303 | ||
304 | (void) cmdtp; | |
305 | (void) flag; | |
306 | ||
307 | if (argc != 4) | |
308 | return CMD_RET_USAGE; | |
309 | ||
310 | ||
fcd2239e | 311 | addr1 = eval_arg(argv[1], NULL); |
72f58822 | 312 | addr1 += base_address; |
fcd2239e | 313 | addr2 = eval_arg(argv[2], NULL); |
72f58822 | 314 | addr2 += base_address; |
fcd2239e | 315 | count = eval_arg(argv[3], NULL); |
72f58822 L |
316 | |
317 | for (ngood = 0; ngood < count; ++ngood) { | |
ea6971b8 L |
318 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
319 | my_puts_P(PSTR("Bus timeout\n")); | |
320 | rcode = CMD_RET_FAILURE; | |
321 | break; | |
322 | } | |
72f58822 L |
323 | byte1 = z80_read(addr1); |
324 | byte2 = z80_read(addr2); | |
62f624d3 | 325 | z80_bus_cmd(Release); |
72f58822 | 326 | if (byte1 != byte2) { |
6035a17b L |
327 | printf_P(PSTR("byte at 0x%05lx (%#02x) != " |
328 | "byte at 0x%05lx (%#02x)\n"), | |
72f58822 | 329 | addr1, byte1, addr2, byte2); |
d0581f88 | 330 | rcode = CMD_RET_FAILURE; |
72f58822 L |
331 | break; |
332 | } | |
333 | addr1++; | |
334 | addr2++; | |
335 | ||
336 | /* check for ctrl-c to abort... */ | |
337 | if (ctrlc()) { | |
69988dc1 | 338 | my_puts_P(PSTR("Abort\n")); |
d0581f88 | 339 | return CMD_RET_SUCCESS; |
72f58822 L |
340 | } |
341 | } | |
342 | ||
69988dc1 | 343 | printf_P(PSTR("Total of %ld byte(s) (0x%lx) were the same\n"), ngood, ngood); |
72f58822 L |
344 | return rcode; |
345 | } | |
346 | ||
fcf1d5b3 | 347 | command_ret_t do_mem_cp(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
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 | ||
fcd2239e | 358 | src = eval_arg(argv[1], NULL); |
72f58822 | 359 | src += base_address; |
fcd2239e | 360 | dest = eval_arg(argv[2], NULL); |
72f58822 | 361 | dest += base_address; |
fcd2239e | 362 | count = eval_arg(argv[3], NULL); |
72f58822 L |
363 | |
364 | if (count == 0) { | |
69988dc1 | 365 | my_puts_P(PSTR("Zero length?\n")); |
d0581f88 | 366 | return CMD_RET_FAILURE; |
72f58822 | 367 | } |
6035a17b | 368 | |
72f58822 L |
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; | |
b35fcb2f | 378 | z80_bus_request_or_exit(); |
72f58822 L |
379 | data = z80_read(src); |
380 | z80_write(dest, data); | |
62f624d3 | 381 | z80_bus_cmd(Release); |
72f58822 L |
382 | src += step; |
383 | dest += step; | |
384 | ||
385 | /* check for ctrl-c to abort... */ | |
386 | if (ctrlc()) { | |
69988dc1 | 387 | my_puts_P(PSTR("Abort\n")); |
d0581f88 | 388 | return CMD_RET_SUCCESS; |
72f58822 L |
389 | } |
390 | } | |
d0581f88 | 391 | return CMD_RET_SUCCESS; |
72f58822 L |
392 | } |
393 | ||
fcf1d5b3 | 394 | command_ret_t do_mem_base(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, |
72f58822 L |
395 | char * const argv[]) |
396 | { | |
397 | (void) cmdtp; | |
398 | (void) flag; | |
399 | ||
400 | if (argc > 1) { | |
401 | /* Set new base address. */ | |
fcd2239e | 402 | base_address = eval_arg(argv[1], NULL); |
72f58822 L |
403 | } |
404 | /* Print the current base address. */ | |
69988dc1 | 405 | printf_P(PSTR("Base Address: 0x%05lx\n"), base_address); |
d0581f88 | 406 | return CMD_RET_SUCCESS; |
72f58822 L |
407 | } |
408 | ||
fcf1d5b3 | 409 | command_ret_t do_mem_loop(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, |
72f58822 L |
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. */ | |
fcd2239e | 421 | addr = eval_arg(argv[1], NULL); |
72f58822 L |
422 | |
423 | /* Length is the number of bytes. */ | |
fcd2239e | 424 | length = eval_arg(argv[2], NULL); |
72f58822 L |
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) { | |
b35fcb2f | 431 | z80_bus_request_or_exit(); |
5480dc65 | 432 | cli(); |
72f58822 L |
433 | for (;;) |
434 | z80_read(addr); | |
72f58822 L |
435 | } |
436 | ||
b35fcb2f | 437 | z80_bus_request_or_exit(); |
5480dc65 | 438 | cli(); |
72f58822 L |
439 | for (;;) { |
440 | uint32_t i = length; | |
441 | uint32_t p = addr; | |
442 | while (i-- > 0) | |
443 | z80_read(p++); | |
444 | } | |
72f58822 | 445 | |
d0581f88 | 446 | return CMD_RET_SUCCESS; |
72f58822 L |
447 | } |
448 | ||
fcf1d5b3 | 449 | command_ret_t do_mem_loopw (cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
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. */ | |
fcd2239e | 461 | addr = eval_arg(argv[1], NULL); |
72f58822 L |
462 | |
463 | /* Length is the number of bytes. */ | |
fcd2239e | 464 | length = eval_arg(argv[2], NULL); |
72f58822 | 465 | |
fcd2239e | 466 | data = eval_arg(argv[3], NULL); |
72f58822 | 467 | |
5480dc65 L |
468 | /* |
469 | * We want to optimize the loops to run as fast as possible. | |
72f58822 L |
470 | * If we have only one object, just run infinite loops. |
471 | */ | |
472 | if (length == 1) { | |
b35fcb2f | 473 | z80_bus_request_or_exit(); |
5480dc65 | 474 | cli(); |
72f58822 L |
475 | for (;;) |
476 | z80_write(addr, data); | |
477 | } | |
478 | ||
b35fcb2f | 479 | z80_bus_request_or_exit(); |
5480dc65 | 480 | cli(); |
72f58822 L |
481 | for (;;) { |
482 | uint32_t i = length; | |
483 | uint32_t p = addr; | |
484 | while (i-- > 0) | |
485 | z80_write(p++, data); | |
486 | } | |
487 | } | |
5480dc65 L |
488 | |
489 | //#define CONFIG_SYS_ALT_MEMTEST | |
72f58822 L |
490 | |
491 | #ifdef CONFIG_CMD_MEMTEST | |
5480dc65 | 492 | static uint32_t mem_test_alt(uint32_t start_addr, uint32_t end_addr) |
72f58822 | 493 | { |
5480dc65 L |
494 | uint32_t addr; |
495 | uint32_t dummy; | |
72f58822 | 496 | uint32_t errs = 0; |
5480dc65 L |
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 */ | |
72f58822 L |
513 | }; |
514 | ||
72f58822 L |
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 | */ | |
5480dc65 L |
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) { | |
69988dc1 | 542 | printf_P(PSTR("FAILURE (data line): " |
5480dc65 L |
543 | "expected %02x, actual %02x\n"), |
544 | pattern, temp); | |
72f58822 | 545 | errs++; |
72f58822 | 546 | } |
5480dc65 L |
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) { | |
69988dc1 | 551 | printf_P(PSTR("FAILURE (data line): " |
5480dc65 L |
552 | "Is %02x, should be %02x\n"), |
553 | temp, anti_pattern); | |
72f58822 | 554 | errs++; |
72f58822 L |
555 | } |
556 | } | |
5480dc65 L |
557 | |
558 | if (ctrlc()) | |
559 | return -1; | |
72f58822 L |
560 | } |
561 | ||
5480dc65 L |
562 | if (errs) |
563 | return errs; | |
564 | ||
72f58822 L |
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 | */ | |
72f58822 | 599 | |
5480dc65 L |
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); | |
72f58822 L |
606 | /* |
607 | * Write the default pattern at each of the | |
608 | * power-of-two offsets. | |
609 | */ | |
5480dc65 L |
610 | for (offset = 1; offset < num_bytes; offset <<= 1) |
611 | z80_write(addr+offset, pattern); | |
72f58822 L |
612 | |
613 | /* | |
614 | * Check for address bits stuck high. | |
615 | */ | |
5480dc65 | 616 | z80_write(start_addr, anti_pattern); |
72f58822 | 617 | |
5480dc65 L |
618 | for (offset = 1; offset < num_bytes; offset <<= 1) { |
619 | temp = z80_read(start_addr + offset); | |
72f58822 | 620 | if (temp != pattern) { |
5480dc65 L |
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); | |
72f58822 L |
624 | errs++; |
625 | if (ctrlc()) | |
626 | return -1; | |
627 | } | |
628 | } | |
5480dc65 | 629 | z80_write(start_addr, pattern); |
72f58822 L |
630 | |
631 | /* | |
632 | * Check for addr bits stuck low or shorted. | |
633 | */ | |
5480dc65 L |
634 | for (test_offset = 1; test_offset < num_bytes; test_offset <<= 1) { |
635 | z80_write(start_addr + test_offset, anti_pattern); | |
72f58822 | 636 | |
5480dc65 L |
637 | for (offset = 1; offset < num_bytes; offset <<= 1) { |
638 | temp = z80_read(start_addr + offset); | |
72f58822 | 639 | if ((temp != pattern) && (offset != test_offset)) { |
5480dc65 L |
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); | |
72f58822 L |
643 | errs++; |
644 | if (ctrlc()) | |
645 | return -1; | |
646 | } | |
647 | } | |
5480dc65 | 648 | z80_write(start_addr + test_offset, pattern); |
72f58822 L |
649 | } |
650 | ||
5480dc65 L |
651 | if (errs) |
652 | return errs; | |
653 | ||
72f58822 L |
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 | */ | |
5480dc65 | 666 | num_bytes++; |
72f58822 L |
667 | |
668 | /* | |
669 | * Fill memory with a known pattern. | |
670 | */ | |
5480dc65 L |
671 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) |
672 | z80_write(addr, pattern); | |
72f58822 L |
673 | |
674 | /* | |
675 | * Check each location and invert it for the second pass. | |
676 | */ | |
5480dc65 L |
677 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { |
678 | temp = z80_read(addr); | |
72f58822 | 679 | if (temp != pattern) { |
5480dc65 L |
680 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" |
681 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
682 | addr, pattern, temp); | |
72f58822 L |
683 | errs++; |
684 | if (ctrlc()) | |
685 | return -1; | |
686 | } | |
687 | ||
688 | anti_pattern = ~pattern; | |
5480dc65 | 689 | z80_write(addr, anti_pattern); |
72f58822 L |
690 | } |
691 | ||
692 | /* | |
693 | * Check each location for the inverted pattern and zero it. | |
694 | */ | |
5480dc65 | 695 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { |
72f58822 | 696 | anti_pattern = ~pattern; |
5480dc65 | 697 | temp = z80_read(addr); |
72f58822 | 698 | if (temp != anti_pattern) { |
5480dc65 L |
699 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" |
700 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
701 | start_addr, anti_pattern, temp); | |
72f58822 L |
702 | errs++; |
703 | if (ctrlc()) | |
704 | return -1; | |
705 | } | |
5480dc65 | 706 | z80_write(addr, 0); |
72f58822 L |
707 | } |
708 | ||
5480dc65 | 709 | return errs; |
72f58822 L |
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 | */ | |
fcf1d5b3 | 717 | command_ret_t do_mem_mtest(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, |
72f58822 L |
718 | char * const argv[]) |
719 | { | |
5480dc65 L |
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 */ | |
72f58822 | 725 | int ret; |
5480dc65 L |
726 | |
727 | (void) cmdtp; | |
728 | (void) flag; | |
72f58822 L |
729 | |
730 | if (argc > 1) | |
fcd2239e | 731 | start = eval_arg(argv[1], NULL); |
72f58822 L |
732 | |
733 | if (argc > 2) | |
fcd2239e | 734 | end = eval_arg(argv[2], NULL); |
72f58822 | 735 | else |
5480dc65 | 736 | end = CONFIG_SYS_RAMSIZE_MAX - 1; |
72f58822 L |
737 | |
738 | if (argc > 3) | |
fcd2239e | 739 | iteration_limit = (unsigned int) eval_arg(argv[3], NULL); |
72f58822 | 740 | |
5480dc65 L |
741 | printf_P(PSTR("Testing %05lx ... %05lx:\n"), start, end); |
742 | // debug("## %s:%d: start %#05lx end %#05lx\n", __func__, __LINE__, start, end); | |
72f58822 | 743 | |
5480dc65 | 744 | clear_ctrlc(); /* forget any previous Control C */ |
72f58822 | 745 | |
72f58822 L |
746 | for (iteration = 0; |
747 | !iteration_limit || iteration < iteration_limit; | |
748 | iteration++) { | |
72f58822 | 749 | |
69988dc1 | 750 | printf_P(PSTR("Iteration: %6d\r"), iteration + 1); |
5480dc65 L |
751 | // debug("\n"); |
752 | ||
b35fcb2f | 753 | z80_bus_request_or_exit(); |
5480dc65 L |
754 | errs += mem_test_alt(start, end); |
755 | z80_bus_cmd(Release); | |
756 | ||
757 | if (had_ctrlc() || ctrlc()) { | |
72f58822 | 758 | break; |
5480dc65 | 759 | } |
72f58822 L |
760 | } |
761 | ||
5480dc65 | 762 | if (had_ctrlc()) { |
72f58822 | 763 | /* Memory test was aborted - write a newline to finish off */ |
5480dc65 L |
764 | putchar('\n'); |
765 | ret = CMD_RET_FAILURE; | |
72f58822 | 766 | } else { |
69988dc1 | 767 | printf_P(PSTR("Tested %d iteration(s) with %lu errors.\n"), |
72f58822 | 768 | iteration, errs); |
5480dc65 | 769 | ret = errs ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
72f58822 L |
770 | } |
771 | ||
5480dc65 | 772 | return ret; |
72f58822 L |
773 | } |
774 | #endif /* CONFIG_CMD_MEMTEST */ |