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Commit | Line | Data |
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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 | ||
16 | #include "common.h" | |
72f58822 | 17 | #include <ctype.h> |
5480dc65 | 18 | #include <avr/interrupt.h> |
72f58822 | 19 | |
72f58822 L |
20 | #include "command.h" |
21 | #include "cli_readline.h" | |
8f23e84c | 22 | #include "print-utils.h" |
72f58822 | 23 | #include "con-utils.h" |
32154e5a | 24 | #include "getopt-min.h" |
fcd2239e | 25 | #include "eval_arg.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 | ||
b35fcb2f | 46 | static ERRNUM z180_read_buf(uint8_t *buf, uint32_t addr, uint8_t count) |
e39cd2a2 | 47 | { |
d9d8de47 | 48 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) |
b35fcb2f | 49 | return EBUSTO; |
d9d8de47 L |
50 | |
51 | z80_read_block (buf, addr, count); | |
52 | z80_bus_cmd(Release); | |
b35fcb2f | 53 | return ESUCCESS; |
72f58822 L |
54 | } |
55 | ||
72f58822 L |
56 | /*--------------------------------------------------------------------------*/ |
57 | ||
58 | /* Memory Display | |
59 | * | |
60 | * Syntax: | |
61 | * md {addr} {len} | |
62 | */ | |
fcf1d5b3 | 63 | command_ret_t do_mem_md(cmd_tbl_t *cmdtp, uint_fast8_t 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 */ | |
fcd2239e | 88 | addr = eval_arg(argv[1], NULL); |
72f58822 L |
89 | addr += base_address; |
90 | ||
91 | /* If another parameter, it is the length to display. */ | |
92 | if (argc > 2) | |
fcd2239e | 93 | length = eval_arg(argv[2], NULL); |
72f58822 L |
94 | } |
95 | ||
96 | /* Print the lines. */ | |
b35fcb2f L |
97 | ERRNUM ret = dump_mem(addr, addr, length, z180_read_buf, NULL); |
98 | if (ret == EBUSTO) | |
99 | cmd_error(CMD_RET_FAILURE, ret, NULL); | |
72f58822 | 100 | |
b35fcb2f | 101 | if (ret == ESUCCESS) { |
d9d8de47 L |
102 | dp_last_addr = addr + length; |
103 | dp_last_length = length; | |
104 | } | |
d0581f88 | 105 | return CMD_RET_SUCCESS; |
72f58822 L |
106 | } |
107 | ||
d0581f88 L |
108 | /* Modify memory. |
109 | * | |
110 | * Syntax: | |
111 | * mm {addr} | |
112 | * nm {addr} | |
113 | */ | |
114 | static command_ret_t | |
fcf1d5b3 | 115 | mod_mem(cmd_tbl_t *cmdtp, int incrflag, uint_fast8_t flag, int argc, char * const argv[]) |
d0581f88 L |
116 | { |
117 | uint32_t addr; | |
118 | uint8_t data; | |
119 | int nbytes; | |
120 | ||
121 | (void) cmdtp; | |
122 | ||
123 | if (argc != 2) | |
124 | return CMD_RET_USAGE; | |
125 | ||
126 | /* We use the last specified parameters, unless new ones are | |
127 | * entered. | |
128 | */ | |
129 | addr = mm_last_addr; | |
130 | ||
131 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
132 | /* New command specified. | |
133 | */ | |
134 | ||
135 | /* Address is specified since argc > 1 | |
136 | */ | |
fcd2239e | 137 | addr = eval_arg(argv[1], NULL); |
d0581f88 L |
138 | addr += base_address; |
139 | } | |
140 | ||
141 | /* Print the address, followed by value. Then accept input for | |
142 | * the next value. A non-converted value exits. | |
143 | */ | |
144 | do { | |
b35fcb2f | 145 | z80_bus_request_or_exit(); |
d0581f88 | 146 | data = z80_read(addr); |
d0581f88 | 147 | z80_bus_cmd(Release); |
ea6971b8 | 148 | printf_P(PSTR("%05lx: %02x"), addr, data); |
d0581f88 | 149 | |
8ed66016 | 150 | nbytes = cli_readline(PSTR(" ? "), 0); |
d0581f88 L |
151 | if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) { |
152 | /* <CR> pressed as only input, don't modify current | |
153 | * location and move to next. "-" pressed will go back. | |
154 | */ | |
155 | if (incrflag) | |
156 | addr += nbytes ? -1 : 1; | |
157 | nbytes = 1; | |
ad9bc17c L |
158 | |
159 | } else { | |
d0581f88 | 160 | char *endp; |
fcd2239e | 161 | data = eval_arg(console_buffer, &endp); |
d0581f88 L |
162 | nbytes = endp - console_buffer; |
163 | if (nbytes) { | |
b35fcb2f | 164 | z80_bus_request_or_exit(); |
d0581f88 L |
165 | z80_write(addr, data); |
166 | z80_bus_cmd(Release); | |
167 | if (incrflag) | |
168 | addr++; | |
169 | } | |
170 | } | |
13e88ed5 | 171 | } while (nbytes > 0); |
d0581f88 L |
172 | |
173 | mm_last_addr = addr; | |
174 | return CMD_RET_SUCCESS; | |
175 | } | |
176 | ||
177 | ||
fcf1d5b3 | 178 | command_ret_t do_mem_mm(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
179 | { |
180 | return mod_mem (cmdtp, 1, flag, argc, argv); | |
181 | } | |
fcf1d5b3 | 182 | command_ret_t do_mem_nm(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
183 | { |
184 | return mod_mem (cmdtp, 0, flag, argc, argv); | |
185 | } | |
186 | ||
fcf1d5b3 | 187 | command_ret_t do_mem_mw(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 | 188 | { |
32154e5a L |
189 | uint32_t writeval; |
190 | uint32_t addr; | |
191 | uint32_t count = 1; | |
192 | uint_fast8_t width = 1; | |
193 | ||
194 | (void) cmdtp; (void) flag; | |
195 | ||
196 | /* reset getopt() */ | |
beafa6d6 | 197 | optind = 0; |
32154e5a L |
198 | |
199 | int opt; | |
200 | while ((opt = getopt(argc, argv, PSTR("bwl"))) != -1) { | |
201 | switch (opt) { | |
202 | case 'b': | |
203 | width = 1; | |
204 | break; | |
205 | case 'w': | |
206 | width = 2; | |
207 | break; | |
208 | case 'l': | |
209 | width = 4; | |
210 | break; | |
211 | default: /* '?' */ | |
212 | return CMD_RET_USAGE; | |
213 | } | |
214 | } | |
72f58822 | 215 | |
32154e5a L |
216 | /* remaining arguments */ |
217 | argc -= optind; | |
218 | if ((argc < 2) || (argc > 3)) | |
72f58822 L |
219 | return CMD_RET_USAGE; |
220 | ||
32154e5a | 221 | /* Address and value are specified since (adjusted) argc >= 2 */ |
fcd2239e | 222 | addr = eval_arg(argv[optind++], NULL); |
72f58822 | 223 | addr += base_address; |
fcd2239e | 224 | writeval = eval_arg(argv[optind++], NULL); |
72f58822 L |
225 | |
226 | /* Count ? */ | |
32154e5a | 227 | if (argc == 3) |
fcd2239e | 228 | count = eval_arg(argv[optind], NULL); |
72f58822 | 229 | |
b35fcb2f | 230 | z80_bus_request_or_exit(); |
32154e5a L |
231 | if (width == 1) |
232 | z80_memset(addr, writeval, count); | |
233 | else { | |
234 | while (count--) { | |
235 | z80_write_block((const uint8_t *) &writeval, addr, width); | |
236 | addr += width; | |
237 | } | |
238 | } | |
62f624d3 | 239 | z80_bus_cmd(Release); |
72f58822 | 240 | |
d0581f88 | 241 | return CMD_RET_SUCCESS; |
72f58822 L |
242 | } |
243 | ||
244 | #ifdef CONFIG_MX_CYCLIC | |
fcf1d5b3 | 245 | command_ret_t do_mem_mdc ( cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 | 246 | { |
72f58822 | 247 | uint32_t count; |
5480dc65 L |
248 | uint32_t ts; |
249 | ||
250 | (void) cmdtp; | |
251 | (void) flag; | |
72f58822 | 252 | |
fcd2239e L |
253 | optind = 0; |
254 | if (argv[0][1] != 'd') { | |
255 | int opt; | |
256 | while ((opt = getopt(argc, argv, PSTR("bwl"))) != -1) | |
257 | if (opt == '?') | |
258 | return CMD_RET_USAGE; | |
259 | --optind; | |
260 | } | |
261 | ||
fcd2239e | 262 | if (argc-optind != 4) |
72f58822 L |
263 | return CMD_RET_USAGE; |
264 | ||
fcd2239e | 265 | count = eval_arg(argv[optind + 3], NULL); |
72f58822 | 266 | |
5480dc65 | 267 | clear_ctrlc(); /* forget any previous Control C */ |
72f58822 | 268 | for (;;) { |
72f58822 | 269 | |
5480dc65 | 270 | if (argv[0][1] == 'd') |
fcd2239e | 271 | do_mem_md (NULL, 0, argc-1, argv); /* memory display */ |
5480dc65 | 272 | else |
fcd2239e | 273 | do_mem_mw (NULL, 0, argc-1, argv); /* memory write */ |
72f58822 | 274 | |
72f58822 L |
275 | |
276 | /* delay for <count> ms... */ | |
5480dc65 L |
277 | ts = get_timer(0); |
278 | do { | |
279 | /* check for ctrl-c to abort... */ | |
280 | if (had_ctrlc() || ctrlc()) { | |
281 | my_puts_P(PSTR("Abort\n")); | |
282 | return CMD_RET_SUCCESS; | |
283 | } | |
284 | } while (get_timer(ts) < count); | |
72f58822 L |
285 | } |
286 | ||
d0581f88 | 287 | return CMD_RET_SUCCESS; |
72f58822 L |
288 | } |
289 | #endif /* CONFIG_MX_CYCLIC */ | |
290 | ||
fcf1d5b3 | 291 | command_ret_t do_mem_cmp(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
292 | { |
293 | uint32_t addr1, addr2, count, ngood; | |
d0581f88 | 294 | command_ret_t rcode = CMD_RET_SUCCESS; |
72f58822 L |
295 | uint8_t byte1, byte2; |
296 | ||
297 | (void) cmdtp; | |
298 | (void) flag; | |
299 | ||
300 | if (argc != 4) | |
301 | return CMD_RET_USAGE; | |
302 | ||
303 | ||
fcd2239e | 304 | addr1 = eval_arg(argv[1], NULL); |
72f58822 | 305 | addr1 += base_address; |
fcd2239e | 306 | addr2 = eval_arg(argv[2], NULL); |
72f58822 | 307 | addr2 += base_address; |
fcd2239e | 308 | count = eval_arg(argv[3], NULL); |
72f58822 L |
309 | |
310 | for (ngood = 0; ngood < count; ++ngood) { | |
ea6971b8 L |
311 | if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { |
312 | my_puts_P(PSTR("Bus timeout\n")); | |
313 | rcode = CMD_RET_FAILURE; | |
314 | break; | |
315 | } | |
72f58822 L |
316 | byte1 = z80_read(addr1); |
317 | byte2 = z80_read(addr2); | |
62f624d3 | 318 | z80_bus_cmd(Release); |
72f58822 | 319 | if (byte1 != byte2) { |
6035a17b L |
320 | printf_P(PSTR("byte at 0x%05lx (%#02x) != " |
321 | "byte at 0x%05lx (%#02x)\n"), | |
72f58822 | 322 | addr1, byte1, addr2, byte2); |
d0581f88 | 323 | rcode = CMD_RET_FAILURE; |
72f58822 L |
324 | break; |
325 | } | |
326 | addr1++; | |
327 | addr2++; | |
328 | ||
329 | /* check for ctrl-c to abort... */ | |
330 | if (ctrlc()) { | |
69988dc1 | 331 | my_puts_P(PSTR("Abort\n")); |
d0581f88 | 332 | return CMD_RET_SUCCESS; |
72f58822 L |
333 | } |
334 | } | |
335 | ||
69988dc1 | 336 | printf_P(PSTR("Total of %ld byte(s) (0x%lx) were the same\n"), ngood, ngood); |
72f58822 L |
337 | return rcode; |
338 | } | |
339 | ||
fcf1d5b3 | 340 | command_ret_t do_mem_cp(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
341 | { |
342 | uint32_t src, dest, count; | |
343 | int_fast8_t step; | |
344 | ||
345 | (void) cmdtp; | |
346 | (void) flag; | |
347 | ||
348 | if (argc != 4) | |
349 | return CMD_RET_USAGE; | |
350 | ||
fcd2239e | 351 | src = eval_arg(argv[1], NULL); |
72f58822 | 352 | src += base_address; |
fcd2239e | 353 | dest = eval_arg(argv[2], NULL); |
72f58822 | 354 | dest += base_address; |
fcd2239e | 355 | count = eval_arg(argv[3], NULL); |
72f58822 L |
356 | |
357 | if (count == 0) { | |
69988dc1 | 358 | my_puts_P(PSTR("Zero length?\n")); |
d0581f88 | 359 | return CMD_RET_FAILURE; |
72f58822 | 360 | } |
6035a17b | 361 | |
72f58822 L |
362 | if (dest > src) { |
363 | src += count - 1; | |
364 | dest += count - 1; | |
365 | step = -1; | |
366 | } else | |
367 | step = 1; | |
368 | ||
369 | while (count-- > 0) { | |
370 | uint8_t data; | |
b35fcb2f | 371 | z80_bus_request_or_exit(); |
72f58822 L |
372 | data = z80_read(src); |
373 | z80_write(dest, data); | |
62f624d3 | 374 | z80_bus_cmd(Release); |
72f58822 L |
375 | src += step; |
376 | dest += step; | |
377 | ||
378 | /* check for ctrl-c to abort... */ | |
379 | if (ctrlc()) { | |
69988dc1 | 380 | my_puts_P(PSTR("Abort\n")); |
d0581f88 | 381 | return CMD_RET_SUCCESS; |
72f58822 L |
382 | } |
383 | } | |
d0581f88 | 384 | return CMD_RET_SUCCESS; |
72f58822 L |
385 | } |
386 | ||
fcf1d5b3 | 387 | command_ret_t do_mem_base(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, |
72f58822 L |
388 | char * const argv[]) |
389 | { | |
390 | (void) cmdtp; | |
391 | (void) flag; | |
392 | ||
393 | if (argc > 1) { | |
394 | /* Set new base address. */ | |
fcd2239e | 395 | base_address = eval_arg(argv[1], NULL); |
72f58822 L |
396 | } |
397 | /* Print the current base address. */ | |
69988dc1 | 398 | printf_P(PSTR("Base Address: 0x%05lx\n"), base_address); |
d0581f88 | 399 | return CMD_RET_SUCCESS; |
72f58822 L |
400 | } |
401 | ||
fcf1d5b3 | 402 | command_ret_t do_mem_loop(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, |
72f58822 L |
403 | char * const argv[]) |
404 | { | |
405 | uint32_t addr, length; | |
406 | ||
407 | (void) cmdtp; | |
408 | (void) flag; | |
409 | ||
410 | if (argc < 3) | |
411 | return CMD_RET_USAGE; | |
412 | ||
413 | /* Address is always specified. */ | |
fcd2239e | 414 | addr = eval_arg(argv[1], NULL); |
72f58822 L |
415 | |
416 | /* Length is the number of bytes. */ | |
fcd2239e | 417 | length = eval_arg(argv[2], NULL); |
72f58822 L |
418 | |
419 | ||
420 | /* We want to optimize the loops to run as fast as possible. | |
421 | * If we have only one object, just run infinite loops. | |
422 | */ | |
423 | if (length == 1) { | |
b35fcb2f | 424 | z80_bus_request_or_exit(); |
5480dc65 | 425 | cli(); |
72f58822 L |
426 | for (;;) |
427 | z80_read(addr); | |
72f58822 L |
428 | } |
429 | ||
b35fcb2f | 430 | z80_bus_request_or_exit(); |
5480dc65 | 431 | cli(); |
72f58822 L |
432 | for (;;) { |
433 | uint32_t i = length; | |
434 | uint32_t p = addr; | |
435 | while (i-- > 0) | |
436 | z80_read(p++); | |
437 | } | |
72f58822 | 438 | |
d0581f88 | 439 | return CMD_RET_SUCCESS; |
72f58822 L |
440 | } |
441 | ||
fcf1d5b3 | 442 | command_ret_t do_mem_loopw (cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, char * const argv[]) |
72f58822 L |
443 | { |
444 | uint32_t addr, length; | |
445 | uint8_t data; | |
446 | ||
447 | (void) cmdtp; | |
448 | (void) flag; | |
449 | ||
450 | if (argc < 4) | |
451 | return CMD_RET_USAGE; | |
452 | ||
453 | /* Address is always specified. */ | |
fcd2239e | 454 | addr = eval_arg(argv[1], NULL); |
72f58822 L |
455 | |
456 | /* Length is the number of bytes. */ | |
fcd2239e | 457 | length = eval_arg(argv[2], NULL); |
72f58822 | 458 | |
fcd2239e | 459 | data = eval_arg(argv[3], NULL); |
72f58822 | 460 | |
5480dc65 L |
461 | /* |
462 | * We want to optimize the loops to run as fast as possible. | |
72f58822 L |
463 | * If we have only one object, just run infinite loops. |
464 | */ | |
465 | if (length == 1) { | |
b35fcb2f | 466 | z80_bus_request_or_exit(); |
5480dc65 | 467 | cli(); |
72f58822 L |
468 | for (;;) |
469 | z80_write(addr, data); | |
470 | } | |
471 | ||
b35fcb2f | 472 | z80_bus_request_or_exit(); |
5480dc65 | 473 | cli(); |
72f58822 L |
474 | for (;;) { |
475 | uint32_t i = length; | |
476 | uint32_t p = addr; | |
477 | while (i-- > 0) | |
478 | z80_write(p++, data); | |
479 | } | |
480 | } | |
5480dc65 L |
481 | |
482 | //#define CONFIG_SYS_ALT_MEMTEST | |
72f58822 L |
483 | |
484 | #ifdef CONFIG_CMD_MEMTEST | |
5480dc65 | 485 | static uint32_t mem_test_alt(uint32_t start_addr, uint32_t end_addr) |
72f58822 | 486 | { |
5480dc65 L |
487 | uint32_t addr; |
488 | uint32_t dummy; | |
72f58822 | 489 | uint32_t errs = 0; |
5480dc65 L |
490 | uint32_t offset; |
491 | uint32_t test_offset; | |
492 | uint8_t pattern; | |
493 | uint8_t anti_pattern; | |
494 | uint8_t temp; | |
495 | uint32_t num_bytes; | |
496 | ||
497 | static const FLASH uint8_t bitpattern[] = { | |
498 | 0x01, /* single bit */ | |
499 | 0x03, /* two adjacent bits */ | |
500 | 0x07, /* three adjacent bits */ | |
501 | 0x0F, /* four adjacent bits */ | |
502 | 0x05, /* two non-adjacent bits */ | |
503 | 0x15, /* three non-adjacent bits */ | |
504 | 0x55, /* four non-adjacent bits */ | |
505 | 0xaa, /* alternating 1/0 */ | |
72f58822 L |
506 | }; |
507 | ||
72f58822 L |
508 | /* |
509 | * Data line test: write a pattern to the first | |
510 | * location, write the 1's complement to a 'parking' | |
511 | * address (changes the state of the data bus so a | |
512 | * floating bus doesn't give a false OK), and then | |
513 | * read the value back. Note that we read it back | |
514 | * into a variable because the next time we read it, | |
515 | * it might be right (been there, tough to explain to | |
516 | * the quality guys why it prints a failure when the | |
517 | * "is" and "should be" are obviously the same in the | |
518 | * error message). | |
519 | * | |
520 | * Rather than exhaustively testing, we test some | |
521 | * patterns by shifting '1' bits through a field of | |
522 | * '0's and '0' bits through a field of '1's (i.e. | |
523 | * pattern and ~pattern). | |
524 | */ | |
5480dc65 L |
525 | addr = start_addr; |
526 | dummy = start_addr+1; | |
527 | for (unsigned int j = 0; j < ARRAY_SIZE(bitpattern); j++) { | |
528 | pattern = bitpattern[j]; | |
529 | for (; pattern != 0; pattern <<= 1) { | |
530 | anti_pattern = ~pattern; | |
531 | z80_write(addr, pattern); | |
532 | z80_write(dummy, anti_pattern); /* clear the test data off the bus */ | |
533 | temp = z80_read(addr); | |
534 | if (temp != pattern) { | |
69988dc1 | 535 | printf_P(PSTR("FAILURE (data line): " |
5480dc65 L |
536 | "expected %02x, actual %02x\n"), |
537 | pattern, temp); | |
72f58822 | 538 | errs++; |
72f58822 | 539 | } |
5480dc65 L |
540 | z80_write(addr, anti_pattern); |
541 | z80_write(dummy, pattern); /* clear the test data off the bus */ | |
542 | temp = z80_read(addr); | |
543 | if (temp != anti_pattern) { | |
69988dc1 | 544 | printf_P(PSTR("FAILURE (data line): " |
5480dc65 L |
545 | "Is %02x, should be %02x\n"), |
546 | temp, anti_pattern); | |
72f58822 | 547 | errs++; |
72f58822 L |
548 | } |
549 | } | |
5480dc65 L |
550 | |
551 | if (ctrlc()) | |
552 | return -1; | |
72f58822 L |
553 | } |
554 | ||
5480dc65 L |
555 | if (errs) |
556 | return errs; | |
557 | ||
72f58822 L |
558 | /* |
559 | * Based on code whose Original Author and Copyright | |
560 | * information follows: Copyright (c) 1998 by Michael | |
561 | * Barr. This software is placed into the public | |
562 | * domain and may be used for any purpose. However, | |
563 | * this notice must not be changed or removed and no | |
564 | * warranty is either expressed or implied by its | |
565 | * publication or distribution. | |
566 | */ | |
567 | ||
568 | /* | |
569 | * Address line test | |
570 | ||
571 | * Description: Test the address bus wiring in a | |
572 | * memory region by performing a walking | |
573 | * 1's test on the relevant bits of the | |
574 | * address and checking for aliasing. | |
575 | * This test will find single-bit | |
576 | * address failures such as stuck-high, | |
577 | * stuck-low, and shorted pins. The base | |
578 | * address and size of the region are | |
579 | * selected by the caller. | |
580 | ||
581 | * Notes: For best results, the selected base | |
582 | * address should have enough LSB 0's to | |
583 | * guarantee single address bit changes. | |
584 | * For example, to test a 64-Kbyte | |
585 | * region, select a base address on a | |
586 | * 64-Kbyte boundary. Also, select the | |
587 | * region size as a power-of-two if at | |
588 | * all possible. | |
589 | * | |
590 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
591 | */ | |
72f58822 | 592 | |
5480dc65 L |
593 | num_bytes = (end_addr - start_addr) / sizeof(uint8_t); |
594 | ||
595 | pattern = 0xaa; | |
596 | anti_pattern = 0x55; | |
597 | ||
598 | // debug("## %s:%d: length = 0x%.5lx\n", __func__, __LINE__, num_bytes); | |
72f58822 L |
599 | /* |
600 | * Write the default pattern at each of the | |
601 | * power-of-two offsets. | |
602 | */ | |
5480dc65 L |
603 | for (offset = 1; offset < num_bytes; offset <<= 1) |
604 | z80_write(addr+offset, pattern); | |
72f58822 L |
605 | |
606 | /* | |
607 | * Check for address bits stuck high. | |
608 | */ | |
5480dc65 | 609 | z80_write(start_addr, anti_pattern); |
72f58822 | 610 | |
5480dc65 L |
611 | for (offset = 1; offset < num_bytes; offset <<= 1) { |
612 | temp = z80_read(start_addr + offset); | |
72f58822 | 613 | if (temp != pattern) { |
5480dc65 L |
614 | printf_P(PSTR("FAILURE: Address bit stuck high @ 0x%.5lx:" |
615 | " expected 0x%.2x, actual 0x%.2x\n"), | |
616 | start_addr + offset, pattern, temp); | |
72f58822 L |
617 | errs++; |
618 | if (ctrlc()) | |
619 | return -1; | |
620 | } | |
621 | } | |
5480dc65 | 622 | z80_write(start_addr, pattern); |
72f58822 L |
623 | |
624 | /* | |
625 | * Check for addr bits stuck low or shorted. | |
626 | */ | |
5480dc65 L |
627 | for (test_offset = 1; test_offset < num_bytes; test_offset <<= 1) { |
628 | z80_write(start_addr + test_offset, anti_pattern); | |
72f58822 | 629 | |
5480dc65 L |
630 | for (offset = 1; offset < num_bytes; offset <<= 1) { |
631 | temp = z80_read(start_addr + offset); | |
72f58822 | 632 | if ((temp != pattern) && (offset != test_offset)) { |
5480dc65 L |
633 | printf_P(PSTR("FAILURE: Address bit stuck low or shorted" |
634 | " @ 0x%.5lx: expected 0x%.2x, actual 0x%.2x\n"), | |
635 | start_addr + offset, pattern, temp); | |
72f58822 L |
636 | errs++; |
637 | if (ctrlc()) | |
638 | return -1; | |
639 | } | |
640 | } | |
5480dc65 | 641 | z80_write(start_addr + test_offset, pattern); |
72f58822 L |
642 | } |
643 | ||
5480dc65 L |
644 | if (errs) |
645 | return errs; | |
646 | ||
72f58822 L |
647 | /* |
648 | * Description: Test the integrity of a physical | |
649 | * memory device by performing an | |
650 | * increment/decrement test over the | |
651 | * entire region. In the process every | |
652 | * storage bit in the device is tested | |
653 | * as a zero and a one. The base address | |
654 | * and the size of the region are | |
655 | * selected by the caller. | |
656 | * | |
657 | * Returns: 0 if the test succeeds, 1 if the test fails. | |
658 | */ | |
5480dc65 | 659 | num_bytes++; |
72f58822 L |
660 | |
661 | /* | |
662 | * Fill memory with a known pattern. | |
663 | */ | |
5480dc65 L |
664 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) |
665 | z80_write(addr, pattern); | |
72f58822 L |
666 | |
667 | /* | |
668 | * Check each location and invert it for the second pass. | |
669 | */ | |
5480dc65 L |
670 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { |
671 | temp = z80_read(addr); | |
72f58822 | 672 | if (temp != pattern) { |
5480dc65 L |
673 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" |
674 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
675 | addr, pattern, temp); | |
72f58822 L |
676 | errs++; |
677 | if (ctrlc()) | |
678 | return -1; | |
679 | } | |
680 | ||
681 | anti_pattern = ~pattern; | |
5480dc65 | 682 | z80_write(addr, anti_pattern); |
72f58822 L |
683 | } |
684 | ||
685 | /* | |
686 | * Check each location for the inverted pattern and zero it. | |
687 | */ | |
5480dc65 | 688 | for (pattern = 1, addr = start_addr; addr <= end_addr; pattern++, addr++) { |
72f58822 | 689 | anti_pattern = ~pattern; |
5480dc65 | 690 | temp = z80_read(addr); |
72f58822 | 691 | if (temp != anti_pattern) { |
5480dc65 L |
692 | printf_P(PSTR("FAILURE (read/write) @ 0x%.5lx:" |
693 | " expected 0x%.2x, actual 0x%.2x)\n"), | |
694 | start_addr, anti_pattern, temp); | |
72f58822 L |
695 | errs++; |
696 | if (ctrlc()) | |
697 | return -1; | |
698 | } | |
5480dc65 | 699 | z80_write(addr, 0); |
72f58822 L |
700 | } |
701 | ||
5480dc65 | 702 | return errs; |
72f58822 L |
703 | } |
704 | ||
705 | /* | |
706 | * Perform a memory test. A more complete alternative test can be | |
707 | * configured using CONFIG_SYS_ALT_MEMTEST. The complete test loops until | |
708 | * interrupted by ctrl-c or by a failure of one of the sub-tests. | |
709 | */ | |
fcf1d5b3 | 710 | command_ret_t do_mem_mtest(cmd_tbl_t *cmdtp, uint_fast8_t flag, int argc, |
72f58822 L |
711 | char * const argv[]) |
712 | { | |
5480dc65 L |
713 | uint32_t start = 0; |
714 | uint32_t end; | |
715 | unsigned int iteration_limit = 0; | |
716 | unsigned int iteration; | |
717 | uint32_t errs = 0; /* number of errors */ | |
72f58822 | 718 | int ret; |
5480dc65 L |
719 | |
720 | (void) cmdtp; | |
721 | (void) flag; | |
72f58822 L |
722 | |
723 | if (argc > 1) | |
fcd2239e | 724 | start = eval_arg(argv[1], NULL); |
72f58822 L |
725 | |
726 | if (argc > 2) | |
fcd2239e | 727 | end = eval_arg(argv[2], NULL); |
72f58822 | 728 | else |
5480dc65 | 729 | end = CONFIG_SYS_RAMSIZE_MAX - 1; |
72f58822 L |
730 | |
731 | if (argc > 3) | |
fcd2239e | 732 | iteration_limit = (unsigned int) eval_arg(argv[3], NULL); |
72f58822 | 733 | |
5480dc65 L |
734 | printf_P(PSTR("Testing %05lx ... %05lx:\n"), start, end); |
735 | // debug("## %s:%d: start %#05lx end %#05lx\n", __func__, __LINE__, start, end); | |
72f58822 | 736 | |
5480dc65 | 737 | clear_ctrlc(); /* forget any previous Control C */ |
72f58822 | 738 | |
72f58822 L |
739 | for (iteration = 0; |
740 | !iteration_limit || iteration < iteration_limit; | |
741 | iteration++) { | |
72f58822 | 742 | |
69988dc1 | 743 | printf_P(PSTR("Iteration: %6d\r"), iteration + 1); |
5480dc65 L |
744 | // debug("\n"); |
745 | ||
b35fcb2f | 746 | z80_bus_request_or_exit(); |
5480dc65 L |
747 | errs += mem_test_alt(start, end); |
748 | z80_bus_cmd(Release); | |
749 | ||
750 | if (had_ctrlc() || ctrlc()) { | |
72f58822 | 751 | break; |
5480dc65 | 752 | } |
72f58822 L |
753 | } |
754 | ||
5480dc65 | 755 | if (had_ctrlc()) { |
72f58822 | 756 | /* Memory test was aborted - write a newline to finish off */ |
5480dc65 L |
757 | putchar('\n'); |
758 | ret = CMD_RET_FAILURE; | |
72f58822 | 759 | } else { |
69988dc1 | 760 | printf_P(PSTR("Tested %d iteration(s) with %lu errors.\n"), |
72f58822 | 761 | iteration, errs); |
5480dc65 | 762 | ret = errs ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
72f58822 L |
763 | } |
764 | ||
5480dc65 | 765 | return ret; |
72f58822 L |
766 | } |
767 | #endif /* CONFIG_CMD_MEMTEST */ |