Revert "riscv: Allow use of reset drivers"
[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%x\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                 .callback       = NULL,
191         };
192         loff_t ofs;
193         int ret;
194         int blocksize = 1 << this->erase_shift;
195
196         for (ofs = start; ofs < (start + size); ofs += blocksize) {
197                 ret = mtd_block_isbad(mtd, ofs);
198                 if (ret && !force) {
199                         printf("Skip erase bad block %d at 0x%x\n",
200                                (u32)(ofs >> this->erase_shift), (u32)ofs);
201                         continue;
202                 }
203
204                 instr.addr = ofs;
205                 instr.len = blocksize;
206                 instr.priv = force;
207                 instr.mtd = mtd;
208                 ret = mtd_erase(mtd, &instr);
209                 if (ret) {
210                         printf("erase failed block %d at 0x%x\n",
211                                (u32)(ofs >> this->erase_shift), (u32)ofs);
212                         continue;
213                 }
214         }
215
216         return 0;
217 }
218
219 static int onenand_block_test(u32 start, u32 size)
220 {
221         struct onenand_chip *this = mtd->priv;
222         struct erase_info instr = {
223                 .callback       = NULL,
224                 .priv           = 0,
225         };
226
227         int blocks;
228         loff_t ofs;
229         int blocksize = 1 << this->erase_shift;
230         int start_block, end_block;
231         size_t retlen;
232         u_char *buf;
233         u_char *verify_buf;
234         int ret;
235
236         buf = malloc(blocksize);
237         if (!buf) {
238                 printf("Not enough malloc space available!\n");
239                 return -1;
240         }
241
242         verify_buf = malloc(blocksize);
243         if (!verify_buf) {
244                 printf("Not enough malloc space available!\n");
245                 return -1;
246         }
247
248         start_block = start >> this->erase_shift;
249         end_block = (start + size) >> this->erase_shift;
250
251         /* Protect boot-loader from badblock testing */
252         if (start_block < 2)
253                 start_block = 2;
254
255         if (end_block > (mtd->size >> this->erase_shift))
256                 end_block = mtd->size >> this->erase_shift;
257
258         blocks = start_block;
259         ofs = start;
260         while (blocks < end_block) {
261                 printf("\rTesting block %d at 0x%x", (u32)(ofs >> this->erase_shift), (u32)ofs);
262
263                 ret = mtd_block_isbad(mtd, ofs);
264                 if (ret) {
265                         printf("Skip erase bad block %d at 0x%x\n",
266                                (u32)(ofs >> this->erase_shift), (u32)ofs);
267                         goto next;
268                 }
269
270                 instr.addr = ofs;
271                 instr.len = blocksize;
272                 ret = mtd_erase(mtd, &instr);
273                 if (ret) {
274                         printk("Erase failed 0x%x, %d\n", (u32)ofs, ret);
275                         goto next;
276                 }
277
278                 ret = mtd_write(mtd, ofs, blocksize, &retlen, buf);
279                 if (ret) {
280                         printk("Write failed 0x%x, %d\n", (u32)ofs, ret);
281                         goto next;
282                 }
283
284                 ret = mtd_read(mtd, ofs, blocksize, &retlen, verify_buf);
285                 if (ret) {
286                         printk("Read failed 0x%x, %d\n", (u32)ofs, ret);
287                         goto next;
288                 }
289
290                 if (memcmp(buf, verify_buf, blocksize))
291                         printk("\nRead/Write test failed at 0x%x\n", (u32)ofs);
292
293 next:
294                 ofs += blocksize;
295                 blocks++;
296         }
297         printf("...Done\n");
298
299         free(buf);
300         free(verify_buf);
301
302         return 0;
303 }
304
305 static int onenand_dump(struct mtd_info *mtd, ulong off, int only_oob)
306 {
307         int i;
308         u_char *datbuf, *oobbuf, *p;
309         struct mtd_oob_ops ops;
310         loff_t addr;
311
312         datbuf = malloc(mtd->writesize + mtd->oobsize);
313         oobbuf = malloc(mtd->oobsize);
314         if (!datbuf || !oobbuf) {
315                 puts("No memory for page buffer\n");
316                 return 1;
317         }
318         off &= ~(mtd->writesize - 1);
319         addr = (loff_t) off;
320         memset(&ops, 0, sizeof(ops));
321         ops.datbuf = datbuf;
322         ops.oobbuf = oobbuf;
323         ops.len = mtd->writesize;
324         ops.ooblen = mtd->oobsize;
325         ops.retlen = 0;
326         i = mtd_read_oob(mtd, addr, &ops);
327         if (i < 0) {
328                 printf("Error (%d) reading page %08lx\n", i, off);
329                 free(datbuf);
330                 free(oobbuf);
331                 return 1;
332         }
333         printf("Page %08lx dump:\n", off);
334         i = mtd->writesize >> 4;
335         p = datbuf;
336
337         while (i--) {
338                 if (!only_oob)
339                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
340                                "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
341                                p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
342                                p[8], p[9], p[10], p[11], p[12], p[13], p[14],
343                                p[15]);
344                 p += 16;
345         }
346         puts("OOB:\n");
347         i = mtd->oobsize >> 3;
348         p = oobbuf;
349
350         while (i--) {
351                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
352                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
353                 p += 8;
354         }
355         free(datbuf);
356         free(oobbuf);
357
358         return 0;
359 }
360
361 static int do_onenand_info(struct cmd_tbl *cmdtp, int flag, int argc,
362                            char *const argv[])
363 {
364         printf("%s\n", mtd->name);
365         return 0;
366 }
367
368 static int do_onenand_bad(struct cmd_tbl *cmdtp, int flag, int argc,
369                           char *const argv[])
370 {
371         ulong ofs;
372
373         mtd = &onenand_mtd;
374         /* Currently only one OneNAND device is supported */
375         printf("\nDevice %d bad blocks:\n", 0);
376         for (ofs = 0; ofs < mtd->size; ofs += mtd->erasesize) {
377                 if (mtd_block_isbad(mtd, ofs))
378                         printf("  %08x\n", (u32)ofs);
379         }
380
381         return 0;
382 }
383
384 static int do_onenand_read(struct cmd_tbl *cmdtp, int flag, int argc,
385                            char *const argv[])
386 {
387         char *s;
388         int oob = 0;
389         ulong addr, ofs;
390         size_t len;
391         int ret = 0;
392         size_t retlen = 0;
393
394         if (argc < 3)
395                 return CMD_RET_USAGE;
396
397         s = strchr(argv[0], '.');
398         if ((s != NULL) && (!strcmp(s, ".oob")))
399                 oob = 1;
400
401         addr = (ulong)simple_strtoul(argv[1], NULL, 16);
402
403         printf("\nOneNAND read: ");
404         if (arg_off_size_onenand(argc - 2, argv + 2, &ofs, &len) != 0)
405                 return 1;
406
407         ret = onenand_block_read(ofs, len, &retlen, (u8 *)addr, oob);
408
409         printf(" %d bytes read: %s\n", retlen, ret ? "ERROR" : "OK");
410
411         return ret == 0 ? 0 : 1;
412 }
413
414 static int do_onenand_write(struct cmd_tbl *cmdtp, int flag, int argc,
415                             char *const argv[])
416 {
417         ulong addr, ofs;
418         size_t len;
419         int ret = 0, withoob = 0;
420         size_t retlen = 0;
421
422         if (argc < 3)
423                 return CMD_RET_USAGE;
424
425         if (strncmp(argv[0] + 6, "yaffs", 5) == 0)
426                 withoob = 1;
427
428         addr = (ulong)simple_strtoul(argv[1], NULL, 16);
429
430         printf("\nOneNAND write: ");
431         if (arg_off_size_onenand(argc - 2, argv + 2, &ofs, &len) != 0)
432                 return 1;
433
434         ret = onenand_block_write(ofs, len, &retlen, (u8 *)addr, withoob);
435
436         printf(" %d bytes written: %s\n", retlen, ret ? "ERROR" : "OK");
437
438         return ret == 0 ? 0 : 1;
439 }
440
441 static int do_onenand_erase(struct cmd_tbl *cmdtp, int flag, int argc,
442                             char *const argv[])
443 {
444         ulong ofs;
445         int ret = 0;
446         size_t len;
447         int force;
448
449         /*
450          * Syntax is:
451          *   0       1     2       3    4
452          *   onenand erase [force] [off size]
453          */
454         argc--;
455         argv++;
456         if (argc)
457         {
458                 if (!strcmp("force", argv[0]))
459                 {
460                         force = 1;
461                         argc--;
462                         argv++;
463                 }
464         }
465         printf("\nOneNAND erase: ");
466
467         /* skip first two or three arguments, look for offset and size */
468         if (arg_off_size_onenand(argc, argv, &ofs, &len) != 0)
469                 return 1;
470
471         ret = onenand_block_erase(ofs, len, force);
472
473         printf("%s\n", ret ? "ERROR" : "OK");
474
475         return ret == 0 ? 0 : 1;
476 }
477
478 static int do_onenand_test(struct cmd_tbl *cmdtp, int flag, int argc,
479                            char *const argv[])
480 {
481         ulong ofs;
482         int ret = 0;
483         size_t len;
484
485         /*
486          * Syntax is:
487          *   0       1     2       3    4
488          *   onenand test [force] [off size]
489          */
490
491         printf("\nOneNAND test: ");
492
493         /* skip first two or three arguments, look for offset and size */
494         if (arg_off_size_onenand(argc - 1, argv + 1, &ofs, &len) != 0)
495                 return 1;
496
497         ret = onenand_block_test(ofs, len);
498
499         printf("%s\n", ret ? "ERROR" : "OK");
500
501         return ret == 0 ? 0 : 1;
502 }
503
504 static int do_onenand_dump(struct cmd_tbl *cmdtp, int flag, int argc,
505                            char *const argv[])
506 {
507         ulong ofs;
508         int ret = 0;
509         char *s;
510
511         if (argc < 2)
512                 return CMD_RET_USAGE;
513
514         s = strchr(argv[0], '.');
515         ofs = (int)simple_strtoul(argv[1], NULL, 16);
516
517         if (s != NULL && strcmp(s, ".oob") == 0)
518                 ret = onenand_dump(mtd, ofs, 1);
519         else
520                 ret = onenand_dump(mtd, ofs, 0);
521
522         return ret == 0 ? 1 : 0;
523 }
524
525 static int do_onenand_markbad(struct cmd_tbl *cmdtp, int flag, int argc,
526                               char *const argv[])
527 {
528         int ret = 0;
529         ulong addr;
530
531         argc -= 2;
532         argv += 2;
533
534         if (argc <= 0)
535                 return CMD_RET_USAGE;
536
537         while (argc > 0) {
538                 addr = simple_strtoul(*argv, NULL, 16);
539
540                 if (mtd_block_markbad(mtd, addr)) {
541                         printf("block 0x%08lx NOT marked "
542                                 "as bad! ERROR %d\n",
543                                 addr, ret);
544                         ret = 1;
545                 } else {
546                         printf("block 0x%08lx successfully "
547                                 "marked as bad\n",
548                                 addr);
549                 }
550                 --argc;
551                 ++argv;
552         }
553         return ret;
554 }
555
556 static struct cmd_tbl cmd_onenand_sub[] = {
557         U_BOOT_CMD_MKENT(info, 1, 0, do_onenand_info, "", ""),
558         U_BOOT_CMD_MKENT(bad, 1, 0, do_onenand_bad, "", ""),
559         U_BOOT_CMD_MKENT(read, 4, 0, do_onenand_read, "", ""),
560         U_BOOT_CMD_MKENT(write, 4, 0, do_onenand_write, "", ""),
561         U_BOOT_CMD_MKENT(write.yaffs, 4, 0, do_onenand_write, "", ""),
562         U_BOOT_CMD_MKENT(erase, 3, 0, do_onenand_erase, "", ""),
563         U_BOOT_CMD_MKENT(test, 3, 0, do_onenand_test, "", ""),
564         U_BOOT_CMD_MKENT(dump, 2, 0, do_onenand_dump, "", ""),
565         U_BOOT_CMD_MKENT(markbad, CONFIG_SYS_MAXARGS, 0, do_onenand_markbad, "", ""),
566 };
567
568 #ifdef CONFIG_NEEDS_MANUAL_RELOC
569 void onenand_reloc(void) {
570         fixup_cmdtable(cmd_onenand_sub, ARRAY_SIZE(cmd_onenand_sub));
571 }
572 #endif
573
574 static int do_onenand(struct cmd_tbl *cmdtp, int flag, int argc,
575                       char *const argv[])
576 {
577         struct cmd_tbl *c;
578
579         if (argc < 2)
580                 return CMD_RET_USAGE;
581
582         mtd = &onenand_mtd;
583
584         /* Strip off leading 'onenand' command argument */
585         argc--;
586         argv++;
587
588         c = find_cmd_tbl(argv[0], &cmd_onenand_sub[0], ARRAY_SIZE(cmd_onenand_sub));
589
590         if (c)
591                 return c->cmd(cmdtp, flag, argc, argv);
592         else
593                 return CMD_RET_USAGE;
594 }
595
596 U_BOOT_CMD(
597         onenand,        CONFIG_SYS_MAXARGS,     1,      do_onenand,
598         "OneNAND sub-system",
599         "info - show available OneNAND devices\n"
600         "onenand bad - show bad blocks\n"
601         "onenand read[.oob] addr off size\n"
602         "onenand write[.yaffs] addr off size\n"
603         "    read/write 'size' bytes starting at offset 'off'\n"
604         "    to/from memory address 'addr', skipping bad blocks.\n"
605         "onenand erase [force] [off size] - erase 'size' bytes from\n"
606         "onenand test [off size] - test 'size' bytes from\n"
607         "    offset 'off' (entire device if not specified)\n"
608         "onenand dump[.oob] off - dump page\n"
609         "onenand markbad off [...] - mark bad block(s) at offset (UNSAFE)"
610 );