]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_mem.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
27 * Copied from FADS ROM, Dan Malek (dmalek@jlc.net)
34 #if (CONFIG_COMMANDS & (CFG_CMD_MEMORY | CFG_CMD_PCI | CFG_CMD_I2C))
35 int cmd_get_data_size(char* arg
, int default_size
)
37 /* Check for a size specification .b, .w or .l.
39 int len
= strlen(arg
);
40 if (len
> 2 && arg
[len
-2] == '.') {
54 #if (CONFIG_COMMANDS & CFG_CMD_MEMORY)
57 #define PRINTF(fmt,args...) printf (fmt ,##args)
59 #define PRINTF(fmt,args...)
62 static int mod_mem(cmd_tbl_t
*, int, int, int, char *[]);
64 /* Display values from last command.
65 * Memory modify remembered values are different from display memory.
67 uint dp_last_addr
, dp_last_size
;
68 uint dp_last_length
= 0x40;
69 uint mm_last_addr
, mm_last_size
;
71 static ulong base_address
= 0;
76 * md{.b, .w, .l} {addr} {len}
78 #define DISP_LINE_LEN 16
79 int do_mem_md ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
81 ulong addr
, size
, length
;
82 ulong i
, nbytes
, linebytes
;
86 /* We use the last specified parameters, unless new ones are
91 length
= dp_last_length
;
94 printf ("Usage:\n%s\n", cmdtp
->usage
);
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.
102 size
= cmd_get_data_size(argv
[0], 4);
104 /* Address is specified since argc > 1
106 addr
= simple_strtoul(argv
[1], NULL
, 16);
107 addr
+= base_address
;
109 /* If another parameter, it is the length to display.
110 * Length is the number of objects, not number of bytes.
113 length
= simple_strtoul(argv
[2], NULL
, 16);
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.
121 nbytes
= length
* size
;
123 char linebuf
[DISP_LINE_LEN
];
124 uint
*uip
= (uint
*)linebuf
;
125 ushort
*usp
= (ushort
*)linebuf
;
126 u_char
*ucp
= (u_char
*)linebuf
;
128 printf("%08lx:", addr
);
129 linebytes
= (nbytes
>DISP_LINE_LEN
)?DISP_LINE_LEN
:nbytes
;
130 for (i
=0; i
<linebytes
; i
+= size
) {
132 printf(" %08x", (*uip
++ = *((uint
*)addr
)));
133 } else if (size
== 2) {
134 printf(" %04x", (*usp
++ = *((ushort
*)addr
)));
136 printf(" %02x", (*ucp
++ = *((u_char
*)addr
)));
142 for (i
=0; i
<linebytes
; i
++) {
143 if ((*cp
< 0x20) || (*cp
> 0x7e))
155 } while (nbytes
> 0);
158 dp_last_length
= length
;
163 int do_mem_mm ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
165 return mod_mem (cmdtp
, 1, flag
, argc
, argv
);
167 int do_mem_nm ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
169 return mod_mem (cmdtp
, 0, flag
, argc
, argv
);
172 int do_mem_mw ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
174 ulong addr
, size
, writeval
, count
;
176 if ((argc
< 3) || (argc
> 4)) {
177 printf ("Usage:\n%s\n", cmdtp
->usage
);
181 /* Check for size specification.
183 size
= cmd_get_data_size(argv
[0], 4);
185 /* Address is specified since argc > 1
187 addr
= simple_strtoul(argv
[1], NULL
, 16);
188 addr
+= base_address
;
190 /* Get the value to write.
192 writeval
= simple_strtoul(argv
[2], NULL
, 16);
196 count
= simple_strtoul(argv
[3], NULL
, 16);
201 while (count
-- > 0) {
203 *((ulong
*)addr
) = (ulong
)writeval
;
205 *((ushort
*)addr
) = (ushort
)writeval
;
207 *((u_char
*)addr
) = (u_char
)writeval
;
213 int do_mem_cmp (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
215 ulong size
, addr1
, addr2
, count
, ngood
;
219 printf ("Usage:\n%s\n", cmdtp
->usage
);
223 /* Check for size specification.
225 size
= cmd_get_data_size(argv
[0], 4);
227 addr1
= simple_strtoul(argv
[1], NULL
, 16);
228 addr1
+= base_address
;
230 addr2
= simple_strtoul(argv
[2], NULL
, 16);
231 addr2
+= base_address
;
233 count
= simple_strtoul(argv
[3], NULL
, 16);
237 while (count
-- > 0) {
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
);
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
);
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
);
276 printf("Total of %ld %s%s were the same\n",
277 ngood
, size
== 4 ? "word" : size
== 2 ? "halfword" : "byte",
278 ngood
== 1 ? "" : "s");
282 int do_mem_cp ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
284 ulong addr
, size
, dest
, count
;
287 printf ("Usage:\n%s\n", cmdtp
->usage
);
291 /* Check for size specification.
293 size
= cmd_get_data_size(argv
[0], 4);
295 addr
= simple_strtoul(argv
[1], NULL
, 16);
296 addr
+= base_address
;
298 dest
= simple_strtoul(argv
[2], NULL
, 16);
299 dest
+= base_address
;
301 count
= simple_strtoul(argv
[3], NULL
, 16);
304 puts ("Zero length ???\n");
309 /* check if we are copying to Flash */
310 if (addr2info(dest
) != NULL
) {
313 printf ("Copy to Flash... ");
315 rc
= flash_write ((uchar
*)addr
, dest
, count
*size
);
325 while (count
-- > 0) {
327 *((ulong
*)dest
) = *((ulong
*)addr
);
329 *((ushort
*)dest
) = *((ushort
*)addr
);
331 *((u_char
*)dest
) = *((u_char
*)addr
);
338 int do_mem_base (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
341 /* Set new base address.
343 base_address
= simple_strtoul(argv
[1], NULL
, 16);
345 /* Print the current base address.
347 printf("Base Address: 0x%08lx\n", base_address
);
351 int do_mem_loop (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
353 ulong addr
, size
, length
, i
, junk
;
354 volatile uint
*longp
;
355 volatile ushort
*shortp
;
359 printf ("Usage:\n%s\n", cmdtp
->usage
);
363 /* Check for a size spefication.
364 * Defaults to long if no or incorrect specification.
366 size
= cmd_get_data_size(argv
[0], 4);
368 /* Address is always specified.
370 addr
= simple_strtoul(argv
[1], NULL
, 16);
372 /* Length is the number of objects, not number of bytes.
374 length
= simple_strtoul(argv
[2], NULL
, 16);
376 /* We want to optimize the loops to run as fast as possible.
377 * If we have only one object, just run infinite loops.
381 longp
= (uint
*)addr
;
386 shortp
= (ushort
*)addr
;
397 longp
= (uint
*)addr
;
405 shortp
= (ushort
*)addr
;
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.
424 int do_mem_mtest (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
426 vu_long
*addr
, *start
, *end
;
430 #if defined(CFG_ALT_MEMTEST)
436 vu_long anti_pattern
;
438 vu_long
*dummy
= NULL
;
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 */
459 start
= (ulong
*)simple_strtoul(argv
[1], NULL
, 16);
461 start
= (ulong
*)CFG_MEMTEST_START
;
465 end
= (ulong
*)simple_strtoul(argv
[2], NULL
, 16);
467 end
= (ulong
*)(CFG_MEMTEST_END
);
471 pattern
= (ulong
)simple_strtoul(argv
[3], NULL
, 16);
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
);
487 printf("Iteration: %6d\r", iterations
);
488 PRINTF("Iteration: %6d\n", iterations
);
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
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).
509 for (j
= 0; j
< sizeof(bitpattern
)/sizeof(bitpattern
[0]); j
++) {
511 for(; val
!= 0; val
<<= 1) {
513 *dummy
= ~val
; /* clear the test data off of the bus */
515 if(readback
!= val
) {
516 printf ("FAILURE (data line): "
517 "expected %08lx, actual %08lx\n",
523 if(readback
!= ~val
) {
524 printf ("FAILURE (data line): "
525 "Is %08lx, should be %08lx\n",
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.
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.
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
563 * Returns: 0 if the test succeeds, 1 if the test fails.
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.
572 addr_mask
= ((ulong
)end
- (ulong
)start
)/sizeof(vu_long
);
573 pattern
= (vu_long
) 0xaaaaaaaa;
574 anti_pattern
= (vu_long
) 0x55555555;
576 PRINTF("%s:%d: addr mask = 0x%.8lx\n",
577 __FUNCTION__
, __LINE__
,
580 * Write the default pattern at each of the
581 * power-of-two offsets.
583 for (offset
= 1; (offset
& addr_mask
) != 0; offset
<<= 1) {
584 start
[offset
] = pattern
;
588 * Check for address bits stuck high.
591 start
[test_offset
] = anti_pattern
;
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
);
602 start
[test_offset
] = pattern
;
605 * Check for addr bits stuck low or shorted.
607 for (test_offset
= 1; (test_offset
& addr_mask
) != 0; test_offset
<<= 1) {
608 start
[test_offset
] = anti_pattern
;
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
);
619 start
[test_offset
] = pattern
;
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.
632 * Returns: 0 if the test succeeds, 1 if the test fails.
634 num_words
= ((ulong
)end
- (ulong
)start
)/sizeof(vu_long
) + 1;
637 * Fill memory with a known pattern.
639 for (pattern
= 1, offset
= 0; offset
< num_words
; pattern
++, offset
++) {
640 start
[offset
] = pattern
;
644 * Check each location and invert it for the second pass.
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
);
655 anti_pattern
= ~pattern
;
656 start
[offset
] = anti_pattern
;
660 * Check each location for the inverted pattern and zero it.
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
);
675 #else /* The original, quickie test */
683 printf ("\rPattern %08lX Writing..."
685 "\b\b\b\b\b\b\b\b\b\b",
688 for (addr
=start
,val
=pattern
; addr
<end
; addr
++) {
693 printf("Reading...");
695 for (addr
=start
,val
=pattern
; addr
<end
; addr
++) {
697 if (readback
!= val
) {
698 printf ("\nMem error @ 0x%08X: "
699 "found %08lX, expected %08lX\n",
700 (uint
)addr
, readback
, val
);
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.
712 if(pattern
& 0x80000000) {
713 pattern
= -pattern
; /* complement & increment */
728 * mm{.b, .w, .l} {addr}
729 * nm{.b, .w, .l} {addr}
732 mod_mem(cmd_tbl_t
*cmdtp
, int incrflag
, int flag
, int argc
, char *argv
[])
736 extern char console_buffer
[];
739 printf ("Usage:\n%s\n", cmdtp
->usage
);
743 #ifdef CONFIG_BOOT_RETRY_TIME
744 reset_cmd_timeout(); /* got a good command to get here */
746 /* We use the last specified parameters, unless new ones are
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.
756 size
= cmd_get_data_size(argv
[0], 4);
758 /* Address is specified since argc > 1
760 addr
= simple_strtoul(argv
[1], NULL
, 16);
761 addr
+= base_address
;
764 /* Print the address, followed by value. Then accept input for
765 * the next value. A non-converted value exits.
768 printf("%08lx:", addr
);
770 printf(" %08x", *((uint
*)addr
));
772 printf(" %04x", *((ushort
*)addr
));
774 printf(" %02x", *((u_char
*)addr
));
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.
782 addr
+= nbytes
? -size
: size
;
784 #ifdef CONFIG_BOOT_RETRY_TIME
785 reset_cmd_timeout(); /* good enough to not time out */
788 #ifdef CONFIG_BOOT_RETRY_TIME
789 else if (nbytes
== -2) {
790 break; /* timed out, exit the command */
795 i
= simple_strtoul(console_buffer
, &endp
, 16);
796 nbytes
= endp
- console_buffer
;
798 #ifdef CONFIG_BOOT_RETRY_TIME
799 /* good enough to not time out
806 *((ushort
*)addr
) = i
;
808 *((u_char
*)addr
) = i
;
820 int do_mem_crc (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
827 printf ("Usage:\n%s\n", cmdtp
->usage
);
831 addr
= simple_strtoul(argv
[1], NULL
, 16);
832 addr
+= base_address
;
834 length
= simple_strtoul(argv
[2], NULL
, 16);
836 crc
= crc32 (0, (const uchar
*)addr
, length
);
838 printf ("CRC32 for %08lx ... %08lx ==> %08lx\n",
839 addr
, addr
+ length
-1, crc
);
843 ptr
= (ulong
*)simple_strtoul(argv
[3], NULL
, 16);
850 #endif /* CFG_CMD_MEMORY */