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wdenk38635852002-08-27 05:55:31 +00001/*
2 * (C) Copyright 2000
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24/*
25 * Memory Functions
26 *
27 * Copied from FADS ROM, Dan Malek (dmalek@jlc.net)
28 */
29
30#include <common.h>
31#include <command.h>
32#include <cmd_mem.h>
33
34#if (CONFIG_COMMANDS & (CFG_CMD_MEMORY | CFG_CMD_PCI | CFG_CMD_I2C))
35int cmd_get_data_size(char* arg, int default_size)
36{
37 /* Check for a size specification .b, .w or .l.
38 */
39 int len = strlen(arg);
40 if (len > 2 && arg[len-2] == '.') {
41 switch(arg[len-1]) {
42 case 'b':
43 return 1;
44 case 'w':
45 return 2;
46 case 'l':
47 return 4;
48 }
49 }
50 return default_size;
51}
52#endif
53
54#if (CONFIG_COMMANDS & CFG_CMD_MEMORY)
55
56#ifdef CMD_MEM_DEBUG
57#define PRINTF(fmt,args...) printf (fmt ,##args)
58#else
59#define PRINTF(fmt,args...)
60#endif
61
62static int mod_mem(cmd_tbl_t *, int, int, int, char *[]);
63
64/* Display values from last command.
65 * Memory modify remembered values are different from display memory.
66 */
67uint dp_last_addr, dp_last_size;
68uint dp_last_length = 0x40;
69uint mm_last_addr, mm_last_size;
70
71static ulong base_address = 0;
72
73/* Memory Display
74 *
75 * Syntax:
76 * md{.b, .w, .l} {addr} {len}
77 */
78#define DISP_LINE_LEN 16
79int do_mem_md ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
80{
81 ulong addr, size, length;
82 ulong i, nbytes, linebytes;
83 u_char *cp;
84 int rc = 0;
85
86 /* We use the last specified parameters, unless new ones are
87 * entered.
88 */
89 addr = dp_last_addr;
90 size = dp_last_size;
91 length = dp_last_length;
92
93 if (argc < 2) {
94 printf ("Usage:\n%s\n", cmdtp->usage);
95 return 1;
96 }
97
98 if ((flag & CMD_FLAG_REPEAT) == 0) {
99 /* New command specified. Check for a size specification.
100 * Defaults to long if no or incorrect specification.
101 */
102 size = cmd_get_data_size(argv[0], 4);
103
104 /* Address is specified since argc > 1
105 */
106 addr = simple_strtoul(argv[1], NULL, 16);
107 addr += base_address;
108
109 /* If another parameter, it is the length to display.
110 * Length is the number of objects, not number of bytes.
111 */
112 if (argc > 2)
113 length = simple_strtoul(argv[2], NULL, 16);
114 }
115
116 /* Print the lines.
117 *
118 * We buffer all read data, so we can make sure data is read only
119 * once, and all accesses are with the specified bus width.
120 */
121 nbytes = length * size;
122 do {
123 char linebuf[DISP_LINE_LEN];
124 uint *uip = (uint *)linebuf;
125 ushort *usp = (ushort *)linebuf;
126 u_char *ucp = (u_char *)linebuf;
127
128 printf("%08lx:", addr);
129 linebytes = (nbytes>DISP_LINE_LEN)?DISP_LINE_LEN:nbytes;
130 for (i=0; i<linebytes; i+= size) {
131 if (size == 4) {
132 printf(" %08x", (*uip++ = *((uint *)addr)));
133 } else if (size == 2) {
134 printf(" %04x", (*usp++ = *((ushort *)addr)));
135 } else {
136 printf(" %02x", (*ucp++ = *((u_char *)addr)));
137 }
138 addr += size;
139 }
140 printf(" ");
141 cp = linebuf;
142 for (i=0; i<linebytes; i++) {
143 if ((*cp < 0x20) || (*cp > 0x7e))
144 printf(".");
145 else
146 printf("%c", *cp);
147 cp++;
148 }
149 printf("\n");
150 nbytes -= linebytes;
151 if (ctrlc()) {
152 rc = 1;
153 break;
154 }
155 } while (nbytes > 0);
156
157 dp_last_addr = addr;
158 dp_last_length = length;
159 dp_last_size = size;
160 return (rc);
161}
162
163int do_mem_mm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
164{
165 return mod_mem (cmdtp, 1, flag, argc, argv);
166}
167int do_mem_nm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
168{
169 return mod_mem (cmdtp, 0, flag, argc, argv);
170}
171
172int do_mem_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
173{
174 ulong addr, size, writeval, count;
175
176 if ((argc < 3) || (argc > 4)) {
177 printf ("Usage:\n%s\n", cmdtp->usage);
178 return 1;
179 }
180
181 /* Check for size specification.
182 */
183 size = cmd_get_data_size(argv[0], 4);
184
185 /* Address is specified since argc > 1
186 */
187 addr = simple_strtoul(argv[1], NULL, 16);
188 addr += base_address;
189
190 /* Get the value to write.
191 */
192 writeval = simple_strtoul(argv[2], NULL, 16);
193
194 /* Count ? */
195 if (argc == 4) {
196 count = simple_strtoul(argv[3], NULL, 16);
197 } else {
198 count = 1;
199 }
200
201 while (count-- > 0) {
202 if (size == 4)
203 *((ulong *)addr) = (ulong )writeval;
204 else if (size == 2)
205 *((ushort *)addr) = (ushort)writeval;
206 else
207 *((u_char *)addr) = (u_char)writeval;
208 addr += size;
209 }
210 return 0;
211}
212
213int do_mem_cmp (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
214{
215 ulong size, addr1, addr2, count, ngood;
216 int rcode = 0;
217
218 if (argc != 4) {
219 printf ("Usage:\n%s\n", cmdtp->usage);
220 return 1;
221 }
222
223 /* Check for size specification.
224 */
225 size = cmd_get_data_size(argv[0], 4);
226
227 addr1 = simple_strtoul(argv[1], NULL, 16);
228 addr1 += base_address;
229
230 addr2 = simple_strtoul(argv[2], NULL, 16);
231 addr2 += base_address;
232
233 count = simple_strtoul(argv[3], NULL, 16);
234
235 ngood = 0;
236
237 while (count-- > 0) {
238 if (size == 4) {
239 ulong word1 = *(ulong *)addr1;
240 ulong word2 = *(ulong *)addr2;
241 if (word1 != word2) {
242 printf("word at 0x%08lx (0x%08lx) "
243 "!= word at 0x%08lx (0x%08lx)\n",
244 addr1, word1, addr2, word2);
245 rcode = 1;
246 break;
247 }
248 }
249 else if (size == 2) {
250 ushort hword1 = *(ushort *)addr1;
251 ushort hword2 = *(ushort *)addr2;
252 if (hword1 != hword2) {
253 printf("halfword at 0x%08lx (0x%04x) "
254 "!= halfword at 0x%08lx (0x%04x)\n",
255 addr1, hword1, addr2, hword2);
256 rcode = 1;
257 break;
258 }
259 }
260 else {
261 u_char byte1 = *(u_char *)addr1;
262 u_char byte2 = *(u_char *)addr2;
263 if (byte1 != byte2) {
264 printf("byte at 0x%08lx (0x%02x) "
265 "!= byte at 0x%08lx (0x%02x)\n",
266 addr1, byte1, addr2, byte2);
267 rcode = 1;
268 break;
269 }
270 }
271 ngood++;
272 addr1 += size;
273 addr2 += size;
274 }
275
276 printf("Total of %ld %s%s were the same\n",
277 ngood, size == 4 ? "word" : size == 2 ? "halfword" : "byte",
278 ngood == 1 ? "" : "s");
279 return rcode;
280}
281
282int do_mem_cp ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
283{
284 ulong addr, size, dest, count;
285
286 if (argc != 4) {
287 printf ("Usage:\n%s\n", cmdtp->usage);
288 return 1;
289 }
290
291 /* Check for size specification.
292 */
293 size = cmd_get_data_size(argv[0], 4);
294
295 addr = simple_strtoul(argv[1], NULL, 16);
296 addr += base_address;
297
298 dest = simple_strtoul(argv[2], NULL, 16);
299 dest += base_address;
300
301 count = simple_strtoul(argv[3], NULL, 16);
302
303 if (count == 0) {
304 puts ("Zero length ???\n");
305 return 1;
306 }
307
308#ifndef CFG_NO_FLASH
309 /* check if we are copying to Flash */
310 if (addr2info(dest) != NULL) {
311 int rc;
312
313 printf ("Copy to Flash... ");
314
315 rc = flash_write ((uchar *)addr, dest, count*size);
316 if (rc != 0) {
317 flash_perror (rc);
318 return (1);
319 }
320 puts ("done\n");
321 return 0;
322 }
323#endif
324
325 while (count-- > 0) {
326 if (size == 4)
327 *((ulong *)dest) = *((ulong *)addr);
328 else if (size == 2)
329 *((ushort *)dest) = *((ushort *)addr);
330 else
331 *((u_char *)dest) = *((u_char *)addr);
332 addr += size;
333 dest += size;
334 }
335 return 0;
336}
337
338int do_mem_base (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
339{
340 if (argc > 1) {
341 /* Set new base address.
342 */
343 base_address = simple_strtoul(argv[1], NULL, 16);
344 }
345 /* Print the current base address.
346 */
347 printf("Base Address: 0x%08lx\n", base_address);
348 return 0;
349}
350
351int do_mem_loop (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
352{
353 ulong addr, size, length, i, junk;
354 volatile uint *longp;
355 volatile ushort *shortp;
356 volatile u_char *cp;
357
358 if (argc < 3) {
359 printf ("Usage:\n%s\n", cmdtp->usage);
360 return 1;
361 }
362
363 /* Check for a size spefication.
364 * Defaults to long if no or incorrect specification.
365 */
366 size = cmd_get_data_size(argv[0], 4);
367
368 /* Address is always specified.
369 */
370 addr = simple_strtoul(argv[1], NULL, 16);
371
372 /* Length is the number of objects, not number of bytes.
373 */
374 length = simple_strtoul(argv[2], NULL, 16);
375
376 /* We want to optimize the loops to run as fast as possible.
377 * If we have only one object, just run infinite loops.
378 */
379 if (length == 1) {
380 if (size == 4) {
381 longp = (uint *)addr;
382 for (;;)
383 i = *longp;
384 }
385 if (size == 2) {
386 shortp = (ushort *)addr;
387 for (;;)
388 i = *shortp;
389 }
390 cp = (u_char *)addr;
391 for (;;)
392 i = *cp;
393 }
394
395 if (size == 4) {
396 for (;;) {
397 longp = (uint *)addr;
398 i = length;
399 while (i-- > 0)
400 junk = *longp++;
401 }
402 }
403 if (size == 2) {
404 for (;;) {
405 shortp = (ushort *)addr;
406 i = length;
407 while (i-- > 0)
408 junk = *shortp++;
409 }
410 }
411 for (;;) {
412 cp = (u_char *)addr;
413 i = length;
414 while (i-- > 0)
415 junk = *cp++;
416 }
417}
418
419/*
420 * Perform a memory test. A more complete alternative test can be
421 * configured using CFG_ALT_MEMTEST. The complete test loops until
422 * interrupted by ctrl-c or by a failure of one of the sub-tests.
423 */
424int do_mem_mtest (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
425{
426 vu_long *addr, *start, *end;
427 ulong val;
428 ulong readback;
429
430#if defined(CFG_ALT_MEMTEST)
431 vu_long addr_mask;
432 vu_long offset;
433 vu_long test_offset;
434 vu_long pattern;
435 vu_long temp;
436 vu_long anti_pattern;
437 vu_long num_words;
438 vu_long *dummy = NULL;
439 int j;
440 int iterations = 1;
441
442 static const ulong bitpattern[] = {
443 0x00000001, /* single bit */
444 0x00000003, /* two adjacent bits */
445 0x00000007, /* three adjacent bits */
446 0x0000000F, /* four adjacent bits */
447 0x00000005, /* two non-adjacent bits */
448 0x00000015, /* three non-adjacent bits */
449 0x00000055, /* four non-adjacent bits */
450 0xaaaaaaaa, /* alternating 1/0 */
451 };
452#else
453 ulong incr;
454 ulong pattern;
455 int rcode = 0;
456#endif
457
458 if (argc > 1) {
459 start = (ulong *)simple_strtoul(argv[1], NULL, 16);
460 } else {
461 start = (ulong *)CFG_MEMTEST_START;
462 }
463
464 if (argc > 2) {
465 end = (ulong *)simple_strtoul(argv[2], NULL, 16);
466 } else {
467 end = (ulong *)(CFG_MEMTEST_END);
468 }
469
470 if (argc > 3) {
471 pattern = (ulong)simple_strtoul(argv[3], NULL, 16);
472 } else {
473 pattern = 0;
474 }
475
476#if defined(CFG_ALT_MEMTEST)
477 printf ("Testing %08x ... %08x:\n", (uint)start, (uint)end);
478 PRINTF("%s:%d: start 0x%p end 0x%p\n",
479 __FUNCTION__, __LINE__, start, end);
480
481 for (;;) {
482 if (ctrlc()) {
483 putc ('\n');
484 return 1;
485 }
486
487 printf("Iteration: %6d\r", iterations);
488 PRINTF("Iteration: %6d\n", iterations);
489 iterations++;
490
491 /*
492 * Data line test: write a pattern to the first
493 * location, write the 1's complement to a 'parking'
494 * address (changes the state of the data bus so a
495 * floating bus doen't give a false OK), and then
496 * read the value back. Note that we read it back
497 * into a variable because the next time we read it,
498 * it might be right (been there, tough to explain to
499 * the quality guys why it prints a failure when the
500 * "is" and "should be" are obviously the same in the
501 * error message).
502 *
503 * Rather than exhaustively testing, we test some
504 * patterns by shifting '1' bits through a field of
505 * '0's and '0' bits through a field of '1's (i.e.
506 * pattern and ~pattern).
507 */
508 addr = start;
509 for (j = 0; j < sizeof(bitpattern)/sizeof(bitpattern[0]); j++) {
510 val = bitpattern[j];
511 for(; val != 0; val <<= 1) {
512 *addr = val;
513 *dummy = ~val; /* clear the test data off of the bus */
514 readback = *addr;
515 if(readback != val) {
516 printf ("FAILURE (data line): "
517 "expected %08lx, actual %08lx\n",
518 val, readback);
519 }
520 *addr = ~val;
521 *dummy = val;
522 readback = *addr;
523 if(readback != ~val) {
524 printf ("FAILURE (data line): "
525 "Is %08lx, should be %08lx\n",
526 val, readback);
527 }
528 }
529 }
530
531 /*
532 * Based on code whose Original Author and Copyright
533 * information follows: Copyright (c) 1998 by Michael
534 * Barr. This software is placed into the public
535 * domain and may be used for any purpose. However,
536 * this notice must not be changed or removed and no
537 * warranty is either expressed or implied by its
538 * publication or distribution.
539 */
540
541 /*
542 * Address line test
543 *
544 * Description: Test the address bus wiring in a
545 * memory region by performing a walking
546 * 1's test on the relevant bits of the
547 * address and checking for aliasing.
548 * This test will find single-bit
549 * address failures such as stuck -high,
550 * stuck-low, and shorted pins. The base
551 * address and size of the region are
552 * selected by the caller.
553 *
554 * Notes: For best results, the selected base
555 * address should have enough LSB 0's to
556 * guarantee single address bit changes.
557 * For example, to test a 64-Kbyte
558 * region, select a base address on a
559 * 64-Kbyte boundary. Also, select the
560 * region size as a power-of-two if at
561 * all possible.
562 *
563 * Returns: 0 if the test succeeds, 1 if the test fails.
564 *
565 * ## NOTE ## Be sure to specify start and end
566 * addresses such that addr_mask has
567 * lots of bits set. For example an
568 * address range of 01000000 02000000 is
569 * bad while a range of 01000000
570 * 01ffffff is perfect.
571 */
572 addr_mask = ((ulong)end - (ulong)start)/sizeof(vu_long);
573 pattern = (vu_long) 0xaaaaaaaa;
574 anti_pattern = (vu_long) 0x55555555;
575
576 PRINTF("%s:%d: addr mask = 0x%.8lx\n",
577 __FUNCTION__, __LINE__,
578 addr_mask);
579 /*
580 * Write the default pattern at each of the
581 * power-of-two offsets.
582 */
583 for (offset = 1; (offset & addr_mask) != 0; offset <<= 1) {
584 start[offset] = pattern;
585 }
586
587 /*
588 * Check for address bits stuck high.
589 */
590 test_offset = 0;
591 start[test_offset] = anti_pattern;
592
593 for (offset = 1; (offset & addr_mask) != 0; offset <<= 1) {
594 temp = start[offset];
595 if (temp != pattern) {
596 printf ("\nFAILURE: Address bit stuck high @ 0x%.8lx:"
597 " expected 0x%.8lx, actual 0x%.8lx\n",
598 (ulong)&start[offset], pattern, temp);
599 return 1;
600 }
601 }
602 start[test_offset] = pattern;
603
604 /*
605 * Check for addr bits stuck low or shorted.
606 */
607 for (test_offset = 1; (test_offset & addr_mask) != 0; test_offset <<= 1) {
608 start[test_offset] = anti_pattern;
609
610 for (offset = 1; (offset & addr_mask) != 0; offset <<= 1) {
611 temp = start[offset];
612 if ((temp != pattern) && (offset != test_offset)) {
613 printf ("\nFAILURE: Address bit stuck low or shorted @"
614 " 0x%.8lx: expected 0x%.8lx, actual 0x%.8lx\n",
615 (ulong)&start[offset], pattern, temp);
616 return 1;
617 }
618 }
619 start[test_offset] = pattern;
620 }
621
622 /*
623 * Description: Test the integrity of a physical
624 * memory device by performing an
625 * increment/decrement test over the
626 * entire region. In the process every
627 * storage bit in the device is tested
628 * as a zero and a one. The base address
629 * and the size of the region are
630 * selected by the caller.
631 *
632 * Returns: 0 if the test succeeds, 1 if the test fails.
633 */
634 num_words = ((ulong)end - (ulong)start)/sizeof(vu_long) + 1;
635
636 /*
637 * Fill memory with a known pattern.
638 */
639 for (pattern = 1, offset = 0; offset < num_words; pattern++, offset++) {
640 start[offset] = pattern;
641 }
642
643 /*
644 * Check each location and invert it for the second pass.
645 */
646 for (pattern = 1, offset = 0; offset < num_words; pattern++, offset++) {
647 temp = start[offset];
648 if (temp != pattern) {
649 printf ("\nFAILURE (read/write) @ 0x%.8lx:"
650 " expected 0x%.8lx, actual 0x%.8lx)\n",
651 (ulong)&start[offset], pattern, temp);
652 return 1;
653 }
654
655 anti_pattern = ~pattern;
656 start[offset] = anti_pattern;
657 }
658
659 /*
660 * Check each location for the inverted pattern and zero it.
661 */
662 for (pattern = 1, offset = 0; offset < num_words; pattern++, offset++) {
663 anti_pattern = ~pattern;
664 temp = start[offset];
665 if (temp != anti_pattern) {
666 printf ("\nFAILURE (read/write): @ 0x%.8lx:"
667 " expected 0x%.8lx, actual 0x%.8lx)\n",
668 (ulong)&start[offset], anti_pattern, temp);
669 return 1;
670 }
671 start[offset] = 0;
672 }
673 }
674
675#else /* The original, quickie test */
676 incr = 1;
677 for (;;) {
678 if (ctrlc()) {
679 putc ('\n');
680 return 1;
681 }
682
683 printf ("\rPattern %08lX Writing..."
684 "%12s"
685 "\b\b\b\b\b\b\b\b\b\b",
686 pattern, "");
687
688 for (addr=start,val=pattern; addr<end; addr++) {
689 *addr = val;
690 val += incr;
691 }
692
693 printf("Reading...");
694
695 for (addr=start,val=pattern; addr<end; addr++) {
696 readback = *addr;
697 if (readback != val) {
698 printf ("\nMem error @ 0x%08X: "
699 "found %08lX, expected %08lX\n",
700 (uint)addr, readback, val);
701 rcode = 1;
702 }
703 val += incr;
704 }
705
706 /*
707 * Flip the pattern each time to make lots of zeros and
708 * then, the next time, lots of ones. We decrement
709 * the "negative" patterns and increment the "positive"
710 * patterns to preserve this feature.
711 */
712 if(pattern & 0x80000000) {
713 pattern = -pattern; /* complement & increment */
714 }
715 else {
716 pattern = ~pattern;
717 }
718 incr = -incr;
719 }
720 return rcode;
721#endif
722}
723
724
725/* Modify memory.
726 *
727 * Syntax:
728 * mm{.b, .w, .l} {addr}
729 * nm{.b, .w, .l} {addr}
730 */
731static int
732mod_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[])
733{
734 ulong addr, size, i;
735 int nbytes;
736 extern char console_buffer[];
737
738 if (argc != 2) {
739 printf ("Usage:\n%s\n", cmdtp->usage);
740 return 1;
741 }
742
743#ifdef CONFIG_BOOT_RETRY_TIME
744 reset_cmd_timeout(); /* got a good command to get here */
745#endif
746 /* We use the last specified parameters, unless new ones are
747 * entered.
748 */
749 addr = mm_last_addr;
750 size = mm_last_size;
751
752 if ((flag & CMD_FLAG_REPEAT) == 0) {
753 /* New command specified. Check for a size specification.
754 * Defaults to long if no or incorrect specification.
755 */
756 size = cmd_get_data_size(argv[0], 4);
757
758 /* Address is specified since argc > 1
759 */
760 addr = simple_strtoul(argv[1], NULL, 16);
761 addr += base_address;
762 }
763
764 /* Print the address, followed by value. Then accept input for
765 * the next value. A non-converted value exits.
766 */
767 do {
768 printf("%08lx:", addr);
769 if (size == 4)
770 printf(" %08x", *((uint *)addr));
771 else if (size == 2)
772 printf(" %04x", *((ushort *)addr));
773 else
774 printf(" %02x", *((u_char *)addr));
775
776 nbytes = readline (" ? ");
777 if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) {
778 /* <CR> pressed as only input, don't modify current
779 * location and move to next. "-" pressed will go back.
780 */
781 if (incrflag)
782 addr += nbytes ? -size : size;
783 nbytes = 1;
784#ifdef CONFIG_BOOT_RETRY_TIME
785 reset_cmd_timeout(); /* good enough to not time out */
786#endif
787 }
788#ifdef CONFIG_BOOT_RETRY_TIME
789 else if (nbytes == -2) {
790 break; /* timed out, exit the command */
791 }
792#endif
793 else {
794 char *endp;
795 i = simple_strtoul(console_buffer, &endp, 16);
796 nbytes = endp - console_buffer;
797 if (nbytes) {
798#ifdef CONFIG_BOOT_RETRY_TIME
799 /* good enough to not time out
800 */
801 reset_cmd_timeout();
802#endif
803 if (size == 4)
804 *((uint *)addr) = i;
805 else if (size == 2)
806 *((ushort *)addr) = i;
807 else
808 *((u_char *)addr) = i;
809 if (incrflag)
810 addr += size;
811 }
812 }
813 } while (nbytes);
814
815 mm_last_addr = addr;
816 mm_last_size = size;
817 return 0;
818}
819
820int do_mem_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
821{
822 ulong addr, length;
823 ulong crc;
824 ulong *ptr;
825
826 if (argc < 3) {
827 printf ("Usage:\n%s\n", cmdtp->usage);
828 return 1;
829 }
830
831 addr = simple_strtoul(argv[1], NULL, 16);
832 addr += base_address;
833
834 length = simple_strtoul(argv[2], NULL, 16);
835
836 crc = crc32 (0, (const uchar *)addr, length);
837
838 printf ("CRC32 for %08lx ... %08lx ==> %08lx\n",
839 addr, addr + length -1, crc);
840
841 if (argc > 3)
842 {
843 ptr = (ulong *)simple_strtoul(argv[3], NULL, 16);
844 *ptr = crc;
845 }
846
847 return 0;
848}
849
850#endif /* CFG_CMD_MEMORY */