Convert CONFIG_SYS_MAXARGS to Kconfig
[platform/kernel/u-boot.git] / cmd / onenand.c
1 /*
2  *  U-Boot command for OneNAND support
3  *
4  *  Copyright (C) 2005-2008 Samsung Electronics
5  *  Kyungmin Park <kyungmin.park@samsung.com>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11
12 #include <common.h>
13 #include <command.h>
14 #include <malloc.h>
15
16 #include <linux/compat.h>
17 #include <linux/mtd/mtd.h>
18 #include <linux/mtd/onenand.h>
19
20 #include <asm/io.h>
21
22 static struct mtd_info *mtd;
23
24 static loff_t next_ofs;
25 static loff_t skip_ofs;
26
27 static int arg_off_size_onenand(int argc, char *const argv[], ulong *off,
28                                 size_t *size)
29 {
30         if (argc >= 1) {
31                 if (!(str2long(argv[0], off))) {
32                         printf("'%s' is not a number\n", argv[0]);
33                         return -1;
34                 }
35         } else {
36                 *off = 0;
37         }
38
39         if (argc >= 2) {
40                 if (!(str2long(argv[1], (ulong *)size))) {
41                         printf("'%s' is not a number\n", argv[1]);
42                         return -1;
43                 }
44         } else {
45                 *size = mtd->size - *off;
46         }
47
48         if ((*off + *size) > mtd->size) {
49                 printf("total chip size (0x%llx) exceeded!\n", mtd->size);
50                 return -1;
51         }
52
53         if (*size == mtd->size)
54                 puts("whole chip\n");
55         else
56                 printf("offset 0x%lx, size 0x%zx\n", *off, *size);
57
58         return 0;
59 }
60
61 static int onenand_block_read(loff_t from, size_t len,
62                               size_t *retlen, u_char *buf, int oob)
63 {
64         struct onenand_chip *this = mtd->priv;
65         int blocks = (int) len >> this->erase_shift;
66         int blocksize = (1 << this->erase_shift);
67         loff_t ofs = from;
68         struct mtd_oob_ops ops = {
69                 .retlen         = 0,
70         };
71         int ret;
72
73         if (oob)
74                 ops.ooblen = blocksize;
75         else
76                 ops.len = blocksize;
77
78         while (blocks) {
79                 ret = mtd_block_isbad(mtd, ofs);
80                 if (ret) {
81                         printk("Bad blocks %d at 0x%x\n",
82                                (u32)(ofs >> this->erase_shift), (u32)ofs);
83                         ofs += blocksize;
84                         continue;
85                 }
86
87                 if (oob)
88                         ops.oobbuf = buf;
89                 else
90                         ops.datbuf = buf;
91
92                 ops.retlen = 0;
93                 ret = mtd_read_oob(mtd, ofs, &ops);
94                 if (ret) {
95                         printk("Read failed 0x%x, %d\n", (u32)ofs, ret);
96                         ofs += blocksize;
97                         continue;
98                 }
99                 ofs += blocksize;
100                 buf += blocksize;
101                 blocks--;
102                 *retlen += ops.retlen;
103         }
104
105         return 0;
106 }
107
108 static int onenand_write_oneblock_withoob(loff_t to, const u_char * buf,
109                                           size_t *retlen)
110 {
111         struct mtd_oob_ops ops = {
112                 .len = mtd->writesize,
113                 .ooblen = mtd->oobsize,
114                 .mode = MTD_OPS_AUTO_OOB,
115         };
116         int page, ret = 0;
117         for (page = 0; page < (mtd->erasesize / mtd->writesize); page ++) {
118                 ops.datbuf = (u_char *)buf;
119                 buf += mtd->writesize;
120                 ops.oobbuf = (u_char *)buf;
121                 buf += mtd->oobsize;
122                 ret = mtd_write_oob(mtd, to, &ops);
123                 if (ret)
124                         break;
125                 to += mtd->writesize;
126         }
127
128         *retlen = (ret) ? 0 : mtd->erasesize;
129         return ret;
130 }
131
132 static int onenand_block_write(loff_t to, size_t len,
133                                size_t *retlen, const u_char * buf, int withoob)
134 {
135         struct onenand_chip *this = mtd->priv;
136         int blocks = len >> this->erase_shift;
137         int blocksize = (1 << this->erase_shift);
138         loff_t ofs;
139         size_t _retlen = 0;
140         int ret;
141
142         if ((to & (mtd->writesize - 1)) != 0) {
143                 printf("Attempt to write non block-aligned data\n");
144                 *retlen = 0;
145                 return 1;
146         }
147
148         if (to == next_ofs) {
149                 next_ofs = to + len;
150                 to += skip_ofs;
151         } else {
152                 next_ofs = to + len;
153                 skip_ofs = 0;
154         }
155         ofs = to;
156
157         while (blocks) {
158                 ret = mtd_block_isbad(mtd, ofs);
159                 if (ret) {
160                         printk("Bad blocks %d at 0x%x\n",
161                                (u32)(ofs >> this->erase_shift), (u32)ofs);
162                         skip_ofs += blocksize;
163                         goto next;
164                 }
165
166                 if (!withoob)
167                         ret = mtd_write(mtd, ofs, blocksize, &_retlen, buf);
168                 else
169                         ret = onenand_write_oneblock_withoob(ofs, buf, &_retlen);
170                 if (ret) {
171                         printk("Write failed 0x%x, %d", (u32)ofs, ret);
172                         skip_ofs += blocksize;
173                         goto next;
174                 }
175
176                 buf += blocksize;
177                 blocks--;
178                 *retlen += _retlen;
179 next:
180                 ofs += blocksize;
181         }
182
183         return 0;
184 }
185
186 static int onenand_block_erase(u32 start, u32 size, int force)
187 {
188         struct onenand_chip *this = mtd->priv;
189         struct erase_info instr = {};
190         loff_t ofs;
191         int ret;
192         int blocksize = 1 << this->erase_shift;
193
194         for (ofs = start; ofs < (start + size); ofs += blocksize) {
195                 ret = mtd_block_isbad(mtd, ofs);
196                 if (ret && !force) {
197                         printf("Skip erase bad block %d at 0x%x\n",
198                                (u32)(ofs >> this->erase_shift), (u32)ofs);
199                         continue;
200                 }
201
202                 instr.addr = ofs;
203                 instr.len = blocksize;
204                 instr.priv = force;
205                 instr.mtd = mtd;
206                 ret = mtd_erase(mtd, &instr);
207                 if (ret) {
208                         printf("erase failed block %d at 0x%x\n",
209                                (u32)(ofs >> this->erase_shift), (u32)ofs);
210                         continue;
211                 }
212         }
213
214         return 0;
215 }
216
217 static int onenand_block_test(u32 start, u32 size)
218 {
219         struct onenand_chip *this = mtd->priv;
220         struct erase_info instr = {};
221
222         int blocks;
223         loff_t ofs;
224         int blocksize = 1 << this->erase_shift;
225         int start_block, end_block;
226         size_t retlen;
227         u_char *buf;
228         u_char *verify_buf;
229         int ret;
230
231         buf = malloc(blocksize);
232         if (!buf) {
233                 printf("Not enough malloc space available!\n");
234                 return -1;
235         }
236
237         verify_buf = malloc(blocksize);
238         if (!verify_buf) {
239                 printf("Not enough malloc space available!\n");
240                 return -1;
241         }
242
243         start_block = start >> this->erase_shift;
244         end_block = (start + size) >> this->erase_shift;
245
246         /* Protect boot-loader from badblock testing */
247         if (start_block < 2)
248                 start_block = 2;
249
250         if (end_block > (mtd->size >> this->erase_shift))
251                 end_block = mtd->size >> this->erase_shift;
252
253         blocks = start_block;
254         ofs = start;
255         while (blocks < end_block) {
256                 printf("\rTesting block %d at 0x%x", (u32)(ofs >> this->erase_shift), (u32)ofs);
257
258                 ret = mtd_block_isbad(mtd, ofs);
259                 if (ret) {
260                         printf("Skip erase bad block %d at 0x%x\n",
261                                (u32)(ofs >> this->erase_shift), (u32)ofs);
262                         goto next;
263                 }
264
265                 instr.addr = ofs;
266                 instr.len = blocksize;
267                 ret = mtd_erase(mtd, &instr);
268                 if (ret) {
269                         printk("Erase failed 0x%x, %d\n", (u32)ofs, ret);
270                         goto next;
271                 }
272
273                 ret = mtd_write(mtd, ofs, blocksize, &retlen, buf);
274                 if (ret) {
275                         printk("Write failed 0x%x, %d\n", (u32)ofs, ret);
276                         goto next;
277                 }
278
279                 ret = mtd_read(mtd, ofs, blocksize, &retlen, verify_buf);
280                 if (ret) {
281                         printk("Read failed 0x%x, %d\n", (u32)ofs, ret);
282                         goto next;
283                 }
284
285                 if (memcmp(buf, verify_buf, blocksize))
286                         printk("\nRead/Write test failed at 0x%x\n", (u32)ofs);
287
288 next:
289                 ofs += blocksize;
290                 blocks++;
291         }
292         printf("...Done\n");
293
294         free(buf);
295         free(verify_buf);
296
297         return 0;
298 }
299
300 static int onenand_dump(struct mtd_info *mtd, ulong off, int only_oob)
301 {
302         int i;
303         u_char *datbuf, *oobbuf, *p;
304         struct mtd_oob_ops ops;
305         loff_t addr;
306
307         datbuf = malloc(mtd->writesize + mtd->oobsize);
308         oobbuf = malloc(mtd->oobsize);
309         if (!datbuf || !oobbuf) {
310                 puts("No memory for page buffer\n");
311                 return 1;
312         }
313         off &= ~(mtd->writesize - 1);
314         addr = (loff_t) off;
315         memset(&ops, 0, sizeof(ops));
316         ops.datbuf = datbuf;
317         ops.oobbuf = oobbuf;
318         ops.len = mtd->writesize;
319         ops.ooblen = mtd->oobsize;
320         ops.retlen = 0;
321         i = mtd_read_oob(mtd, addr, &ops);
322         if (i < 0) {
323                 printf("Error (%d) reading page %08lx\n", i, off);
324                 free(datbuf);
325                 free(oobbuf);
326                 return 1;
327         }
328         printf("Page %08lx dump:\n", off);
329         i = mtd->writesize >> 4;
330         p = datbuf;
331
332         while (i--) {
333                 if (!only_oob)
334                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
335                                "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
336                                p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
337                                p[8], p[9], p[10], p[11], p[12], p[13], p[14],
338                                p[15]);
339                 p += 16;
340         }
341         puts("OOB:\n");
342         i = mtd->oobsize >> 3;
343         p = oobbuf;
344
345         while (i--) {
346                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
347                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
348                 p += 8;
349         }
350         free(datbuf);
351         free(oobbuf);
352
353         return 0;
354 }
355
356 static int do_onenand_info(struct cmd_tbl *cmdtp, int flag, int argc,
357                            char *const argv[])
358 {
359         printf("%s\n", mtd->name);
360         return 0;
361 }
362
363 static int do_onenand_bad(struct cmd_tbl *cmdtp, int flag, int argc,
364                           char *const argv[])
365 {
366         ulong ofs;
367
368         mtd = &onenand_mtd;
369         /* Currently only one OneNAND device is supported */
370         printf("\nDevice %d bad blocks:\n", 0);
371         for (ofs = 0; ofs < mtd->size; ofs += mtd->erasesize) {
372                 if (mtd_block_isbad(mtd, ofs))
373                         printf("  %08x\n", (u32)ofs);
374         }
375
376         return 0;
377 }
378
379 static int do_onenand_read(struct cmd_tbl *cmdtp, int flag, int argc,
380                            char *const argv[])
381 {
382         char *s;
383         int oob = 0;
384         ulong addr, ofs;
385         size_t len;
386         int ret = 0;
387         size_t retlen = 0;
388
389         if (argc < 3)
390                 return CMD_RET_USAGE;
391
392         s = strchr(argv[0], '.');
393         if ((s != NULL) && (!strcmp(s, ".oob")))
394                 oob = 1;
395
396         addr = (ulong)hextoul(argv[1], NULL);
397
398         printf("\nOneNAND read: ");
399         if (arg_off_size_onenand(argc - 2, argv + 2, &ofs, &len) != 0)
400                 return 1;
401
402         ret = onenand_block_read(ofs, len, &retlen, (u8 *)addr, oob);
403
404         printf(" %zu bytes read: %s\n", retlen, ret ? "ERROR" : "OK");
405
406         return ret == 0 ? 0 : 1;
407 }
408
409 static int do_onenand_write(struct cmd_tbl *cmdtp, int flag, int argc,
410                             char *const argv[])
411 {
412         ulong addr, ofs;
413         size_t len;
414         int ret = 0, withoob = 0;
415         size_t retlen = 0;
416
417         if (argc < 3)
418                 return CMD_RET_USAGE;
419
420         if (strncmp(argv[0] + 6, "yaffs", 5) == 0)
421                 withoob = 1;
422
423         addr = (ulong)hextoul(argv[1], NULL);
424
425         printf("\nOneNAND write: ");
426         if (arg_off_size_onenand(argc - 2, argv + 2, &ofs, &len) != 0)
427                 return 1;
428
429         ret = onenand_block_write(ofs, len, &retlen, (u8 *)addr, withoob);
430
431         printf(" %zu bytes written: %s\n", retlen, ret ? "ERROR" : "OK");
432
433         return ret == 0 ? 0 : 1;
434 }
435
436 static int do_onenand_erase(struct cmd_tbl *cmdtp, int flag, int argc,
437                             char *const argv[])
438 {
439         ulong ofs;
440         int ret = 0;
441         size_t len;
442         int force;
443
444         /*
445          * Syntax is:
446          *   0       1     2       3    4
447          *   onenand erase [force] [off size]
448          */
449         argc--;
450         argv++;
451         if (argc)
452         {
453                 if (!strcmp("force", argv[0]))
454                 {
455                         force = 1;
456                         argc--;
457                         argv++;
458                 }
459         }
460         printf("\nOneNAND erase: ");
461
462         /* skip first two or three arguments, look for offset and size */
463         if (arg_off_size_onenand(argc, argv, &ofs, &len) != 0)
464                 return 1;
465
466         ret = onenand_block_erase(ofs, len, force);
467
468         printf("%s\n", ret ? "ERROR" : "OK");
469
470         return ret == 0 ? 0 : 1;
471 }
472
473 static int do_onenand_test(struct cmd_tbl *cmdtp, int flag, int argc,
474                            char *const argv[])
475 {
476         ulong ofs;
477         int ret = 0;
478         size_t len;
479
480         /*
481          * Syntax is:
482          *   0       1     2       3    4
483          *   onenand test [force] [off size]
484          */
485
486         printf("\nOneNAND test: ");
487
488         /* skip first two or three arguments, look for offset and size */
489         if (arg_off_size_onenand(argc - 1, argv + 1, &ofs, &len) != 0)
490                 return 1;
491
492         ret = onenand_block_test(ofs, len);
493
494         printf("%s\n", ret ? "ERROR" : "OK");
495
496         return ret == 0 ? 0 : 1;
497 }
498
499 static int do_onenand_dump(struct cmd_tbl *cmdtp, int flag, int argc,
500                            char *const argv[])
501 {
502         ulong ofs;
503         int ret = 0;
504         char *s;
505
506         if (argc < 2)
507                 return CMD_RET_USAGE;
508
509         s = strchr(argv[0], '.');
510         ofs = (int)hextoul(argv[1], NULL);
511
512         if (s != NULL && strcmp(s, ".oob") == 0)
513                 ret = onenand_dump(mtd, ofs, 1);
514         else
515                 ret = onenand_dump(mtd, ofs, 0);
516
517         return ret == 0 ? 1 : 0;
518 }
519
520 static int do_onenand_markbad(struct cmd_tbl *cmdtp, int flag, int argc,
521                               char *const argv[])
522 {
523         int ret = 0;
524         ulong addr;
525
526         argc -= 2;
527         argv += 2;
528
529         if (argc <= 0)
530                 return CMD_RET_USAGE;
531
532         while (argc > 0) {
533                 addr = hextoul(*argv, NULL);
534
535                 if (mtd_block_markbad(mtd, addr)) {
536                         printf("block 0x%08lx NOT marked "
537                                 "as bad! ERROR %d\n",
538                                 addr, ret);
539                         ret = 1;
540                 } else {
541                         printf("block 0x%08lx successfully "
542                                 "marked as bad\n",
543                                 addr);
544                 }
545                 --argc;
546                 ++argv;
547         }
548         return ret;
549 }
550
551 static struct cmd_tbl cmd_onenand_sub[] = {
552         U_BOOT_CMD_MKENT(info, 1, 0, do_onenand_info, "", ""),
553         U_BOOT_CMD_MKENT(bad, 1, 0, do_onenand_bad, "", ""),
554         U_BOOT_CMD_MKENT(read, 4, 0, do_onenand_read, "", ""),
555         U_BOOT_CMD_MKENT(write, 4, 0, do_onenand_write, "", ""),
556         U_BOOT_CMD_MKENT(write.yaffs, 4, 0, do_onenand_write, "", ""),
557         U_BOOT_CMD_MKENT(erase, 3, 0, do_onenand_erase, "", ""),
558         U_BOOT_CMD_MKENT(test, 3, 0, do_onenand_test, "", ""),
559         U_BOOT_CMD_MKENT(dump, 2, 0, do_onenand_dump, "", ""),
560         U_BOOT_CMD_MKENT(markbad, CONFIG_SYS_MAXARGS, 0, do_onenand_markbad, "", ""),
561 };
562
563 #ifdef CONFIG_NEEDS_MANUAL_RELOC
564 void onenand_reloc(void) {
565         fixup_cmdtable(cmd_onenand_sub, ARRAY_SIZE(cmd_onenand_sub));
566 }
567 #endif
568
569 static int do_onenand(struct cmd_tbl *cmdtp, int flag, int argc,
570                       char *const argv[])
571 {
572         struct cmd_tbl *c;
573
574         if (argc < 2)
575                 return CMD_RET_USAGE;
576
577         mtd = &onenand_mtd;
578
579         /* Strip off leading 'onenand' command argument */
580         argc--;
581         argv++;
582
583         c = find_cmd_tbl(argv[0], &cmd_onenand_sub[0], ARRAY_SIZE(cmd_onenand_sub));
584
585         if (c)
586                 return c->cmd(cmdtp, flag, argc, argv);
587         else
588                 return CMD_RET_USAGE;
589 }
590
591 U_BOOT_CMD(
592         onenand,        CONFIG_SYS_MAXARGS,     1,      do_onenand,
593         "OneNAND sub-system",
594         "info - show available OneNAND devices\n"
595         "onenand bad - show bad blocks\n"
596         "onenand read[.oob] addr off size\n"
597         "onenand write[.yaffs] addr off size\n"
598         "    read/write 'size' bytes starting at offset 'off'\n"
599         "    to/from memory address 'addr', skipping bad blocks.\n"
600         "onenand erase [force] [off size] - erase 'size' bytes from\n"
601         "onenand test [off size] - test 'size' bytes from\n"
602         "    offset 'off' (entire device if not specified)\n"
603         "onenand dump[.oob] off - dump page\n"
604         "onenand markbad off [...] - mark bad block(s) at offset (UNSAFE)"
605 );