2 * U-Boot command for OneNAND support
4 * Copyright (C) 2005-2008 Samsung Electronics
5 * Kyungmin Park <kyungmin.park@samsung.com>
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.
16 #include <linux/mtd/compat.h>
17 #include <linux/mtd/mtd.h>
18 #include <linux/mtd/onenand.h>
22 static struct mtd_info *mtd;
24 static loff_t next_ofs;
25 static loff_t skip_ofs;
27 static inline int str2long(char *p, ulong *num)
31 *num = simple_strtoul(p, &endptr, 16);
32 return (*p != '\0' && *endptr == '\0') ? 1 : 0;
35 static int arg_off_size(int argc, char * const argv[], ulong *off, ssize_t *size)
38 if (!(str2long(argv[0], off))) {
39 printf("'%s' is not a number\n", argv[0]);
47 if (!(str2long(argv[1], (ulong *)size))) {
48 printf("'%s' is not a number\n", argv[1]);
52 *size = mtd->size - *off;
55 if ((*off + *size) > mtd->size) {
56 printf("total chip size (0x%llx) exceeded!\n", mtd->size);
60 if (*size == mtd->size)
63 printf("offset 0x%lx, size 0x%x\n", *off, *size);
68 static int onenand_block_read(loff_t from, ssize_t len,
69 ssize_t *retlen, u_char *buf, int oob)
71 struct onenand_chip *this = mtd->priv;
72 int blocksize = (1 << this->erase_shift);
74 struct mtd_oob_ops ops = {
81 thislen = min_t(ssize_t, len, blocksize);
82 thislen = ALIGN(thislen, mtd->writesize);
84 ret = mtd->block_isbad(mtd, ofs);
86 printk("Bad blocks %d at 0x%x\n",
87 (u32)(ofs >> this->erase_shift), (u32)ofs);
89 /* FIXME need to check how to handle the 'len' */
103 ret = mtd->read_oob(mtd, ofs, &ops);
105 printk("Read failed 0x%x, %d\n", (u32)ofs, ret);
112 *retlen += ops.retlen;
118 static int onenand_write_oneblock_withoob(loff_t to, const u_char * buf,
121 struct mtd_oob_ops ops = {
122 .len = mtd->writesize,
123 .ooblen = mtd->oobsize,
124 .mode = MTD_OOB_AUTO,
127 for (page = 0; page < (mtd->erasesize / mtd->writesize); page ++) {
128 ops.datbuf = (u_char *)buf;
129 buf += mtd->writesize;
130 ops.oobbuf = (u_char *)buf;
132 ret = mtd->write_oob(mtd, to, &ops);
135 to += mtd->writesize;
138 *retlen = (ret) ? 0 : mtd->erasesize;
142 static int onenand_block_write(loff_t to, ssize_t len,
143 ssize_t *retlen, const u_char * buf, int withoob)
145 struct onenand_chip *this = mtd->priv;
146 int blocksize = (1 << this->erase_shift);
147 struct mtd_oob_ops ops = {
156 if (to == next_ofs) {
166 thislen = min_t(size_t, len, blocksize);
167 thislen = ALIGN(thislen, mtd->writesize);
169 ret = mtd->block_isbad(mtd, ofs);
171 printk("Bad blocks %d at 0x%x\n",
172 (u32)(ofs >> this->erase_shift), (u32)ofs);
173 skip_ofs += blocksize;
178 ops.datbuf = (u_char *) buf;
181 /*printf("\t\tunit write 0x%p 0x%llx 0x%x\n", buf, ofs, thislen);*/
182 ret = mtd->write_oob(mtd, ofs, &ops);
184 printk("Write failed 0x%x, %d", (u32)ofs, ret);
193 *retlen += ops.retlen;
199 static int onenand_block_erase(u32 start, u32 size, int force)
201 struct onenand_chip *this = mtd->priv;
202 struct erase_info instr = {
207 int blocksize = 1 << this->erase_shift;
209 for (ofs = start; ofs < (start + size); ofs += blocksize) {
210 ret = mtd->block_isbad(mtd, ofs);
212 printf("Skip erase bad block %d at 0x%x\n",
213 (u32)(ofs >> this->erase_shift), (u32)ofs);
218 instr.len = blocksize;
221 ret = mtd->erase(mtd, &instr);
223 printf("erase failed block %d at 0x%x\n",
224 (u32)(ofs >> this->erase_shift), (u32)ofs);
232 static int onenand_block_test(u32 start, u32 size)
234 struct onenand_chip *this = mtd->priv;
235 struct erase_info instr = {
242 int blocksize = 1 << this->erase_shift;
243 int start_block, end_block;
249 buf = malloc(blocksize);
251 printf("Not enough malloc space available!\n");
255 verify_buf = malloc(blocksize);
257 printf("Not enough malloc space available!\n");
261 start_block = start >> this->erase_shift;
262 end_block = (start + size) >> this->erase_shift;
264 /* Protect boot-loader from badblock testing */
268 if (end_block > (mtd->size >> this->erase_shift))
269 end_block = mtd->size >> this->erase_shift;
271 blocks = start_block;
272 ofs = start_block << this->erase_shift;
273 while (blocks < end_block) {
274 printf("\rTesting block %d at 0x%x", (u32)(ofs >> this->erase_shift), (u32)ofs);
276 ret = mtd->block_isbad(mtd, ofs);
278 printf("Skip erase bad block %d at 0x%x\n",
279 (u32)(ofs >> this->erase_shift), (u32)ofs);
284 instr.len = blocksize;
285 ret = mtd->erase(mtd, &instr);
287 printk("Erase failed 0x%x, %d\n", (u32)ofs, ret);
291 ret = mtd->write(mtd, ofs, blocksize, &retlen, buf);
293 printk("Write failed 0x%x, %d\n", (u32)ofs, ret);
297 ret = mtd->read(mtd, ofs, blocksize, &retlen, verify_buf);
299 printk("Read failed 0x%x, %d\n", (u32)ofs, ret);
303 if (memcmp(buf, verify_buf, blocksize)) {
304 printk("\nRead/Write test failed at 0x%x\n", (u32)ofs);
319 static int onenand_dump(struct mtd_info *mtd, ulong off, int only_oob)
322 u_char *datbuf, *oobbuf, *p;
323 struct mtd_oob_ops ops;
326 datbuf = malloc(mtd->writesize + mtd->oobsize);
327 oobbuf = malloc(mtd->oobsize);
328 if (!datbuf || !oobbuf) {
329 puts("No memory for page buffer\n");
332 off &= ~(mtd->writesize - 1);
334 memset(&ops, 0, sizeof(ops));
337 ops.len = mtd->writesize;
338 ops.ooblen = mtd->oobsize;
340 i = mtd->read_oob(mtd, addr, &ops);
342 printf("Error (%d) reading page %08lx\n", i, off);
347 printf("Page %08lx dump:\n", off);
348 i = mtd->writesize >> 4;
353 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
354 " %02x %02x %02x %02x %02x %02x %02x %02x\n",
355 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
356 p[8], p[9], p[10], p[11], p[12], p[13], p[14],
361 i = mtd->oobsize >> 3;
365 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
366 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
375 static int do_onenand_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
377 printf("%s\n", mtd->name);
381 static int do_onenand_bad(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
386 /* Currently only one OneNAND device is supported */
387 printf("\nDevice %d bad blocks:\n", 0);
388 for (ofs = 0; ofs < mtd->size; ofs += mtd->erasesize) {
389 if (mtd->block_isbad(mtd, ofs))
390 printf(" %08x\n", (u32)ofs);
396 static int do_onenand_read(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
406 return cmd_usage(cmdtp);
408 s = strchr(argv[0], '.');
409 if ((s != NULL) && (!strcmp(s, ".oob")))
412 addr = (ulong)simple_strtoul(argv[1], NULL, 16);
414 printf("OneNAND read: ");
415 if (arg_off_size(argc - 2, argv + 2, &ofs, &len) != 0)
418 ret = onenand_block_read(ofs, len, &retlen, (u8 *)addr, oob);
420 printf(" %d bytes read: %s\n", retlen, ret ? "ERROR" : "OK");
422 return ret == 0 ? 0 : 1;
425 static int do_onenand_write(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
430 int ret = 0, withoob = 0;
432 struct onenand_chip *this = mtd->priv;
433 u32 blocksize = (1 << this->erase_shift);
434 u32 blockmask = blocksize - 1;
437 return cmd_usage(cmdtp);
439 if (strncmp(argv[0] + 6, "yaffs", 5) == 0)
442 addr = (ulong)simple_strtoul(argv[1], NULL, 16);
444 printf("OneNAND write: ");
445 if (arg_off_size(argc - 2, argv + 2, &ofs, &len) != 0)
448 /* Must block aligned.
449 * Writing page across block will not be filtered by bad block check routine */
450 if (ofs & blockmask) {
451 part_len = blocksize - (ofs & blockmask);
454 printf("\tNot block aligned write (0x%x byte @ 0x%x -> 0x%x)\n", part_len, addr, ofs);
455 ret = onenand_block_write(ofs, part_len, &retlen, (u8 *)addr, withoob);
456 printf(" %d bytes written: %s\n", retlen, ret ? "ERROR" : "OK");
463 ret = onenand_block_write(ofs, len, &retlen, (u8 *)addr, withoob);
464 printf(" %d bytes written: %s\n", retlen, ret ? "ERROR" : "OK");
467 return ret == 0 ? 0 : 1;
470 static int do_onenand_erase(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
480 * onenand erase [force] [off size]
486 if (!strcmp("force", argv[0]))
493 printf("OneNAND erase: ");
495 /* skip first two or three arguments, look for offset and size */
496 if (arg_off_size(argc, argv, &ofs, &len) != 0)
499 ret = onenand_block_erase(ofs, len, force);
501 printf("%s\n", ret ? "ERROR" : "OK");
503 return ret == 0 ? 0 : 1;
506 static int do_onenand_test(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
515 * onenand test [force] [off size]
518 printf("OneNAND test: ");
520 /* skip first two or three arguments, look for offset and size */
521 if (arg_off_size(argc - 1, argv + 1, &ofs, &len) != 0)
524 ret = onenand_block_test(ofs, len);
526 printf("%s\n", ret ? "ERROR" : "OK");
528 return ret == 0 ? 0 : 1;
531 static int do_onenand_dump(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
538 return cmd_usage(cmdtp);
540 s = strchr(argv[0], '.');
541 ofs = (int)simple_strtoul(argv[1], NULL, 16);
543 if (s != NULL && strcmp(s, ".oob") == 0)
544 ret = onenand_dump(mtd, ofs, 1);
546 ret = onenand_dump(mtd, ofs, 0);
548 return ret == 0 ? 1 : 0;
551 static int do_onenand_markbad(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
560 return cmd_usage(cmdtp);
563 addr = simple_strtoul(*argv, NULL, 16);
565 if (mtd->block_markbad(mtd, addr)) {
566 printf("block 0x%08lx NOT marked "
567 "as bad! ERROR %d\n",
571 printf("block 0x%08lx successfully "
581 static int do_onenand_lock(cmd_tbl_t * cmdtp, int flag, int argc, char *const argv[])
585 struct onenand_chip *this = mtd->priv;
588 int status_mask = ONENAND_WP_LS|ONENAND_WP_LTS;
594 if (arg_off_size(argc - 2, argv + 2, &start, &size))
598 for (ofs = start; ofs < (start + size); ofs += mtd->erasesize) {
599 if (this->block_islock != NULL)
600 status = this->block_islock(mtd, ofs);
604 if (status & status_mask)
605 return (status & status_mask);
611 static cmd_tbl_t cmd_onenand_sub[] = {
612 U_BOOT_CMD_MKENT(info, 1, 0, do_onenand_info, "", ""),
613 U_BOOT_CMD_MKENT(bad, 1, 0, do_onenand_bad, "", ""),
614 U_BOOT_CMD_MKENT(read, 4, 0, do_onenand_read, "", ""),
615 U_BOOT_CMD_MKENT(write, 4, 0, do_onenand_write, "", ""),
616 U_BOOT_CMD_MKENT(write.yaffs, 4, 0, do_onenand_write, "", ""),
617 U_BOOT_CMD_MKENT(erase, 3, 0, do_onenand_erase, "", ""),
618 U_BOOT_CMD_MKENT(test, 3, 0, do_onenand_test, "", ""),
619 U_BOOT_CMD_MKENT(dump, 2, 0, do_onenand_dump, "", ""),
620 U_BOOT_CMD_MKENT(markbad, CONFIG_SYS_MAXARGS, 0, do_onenand_markbad, "", ""),
621 U_BOOT_CMD_MKENT(lock, 3, 0, do_onenand_lock, "", ""),
624 #ifdef CONFIG_NEEDS_MANUAL_RELOC
625 void onenand_reloc(void) {
626 fixup_cmdtable(cmd_onenand_sub, ARRAY_SIZE(cmd_onenand_sub));
630 int do_onenand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
635 return cmd_usage(cmdtp);
639 /* Strip off leading 'onenand' command argument */
643 c = find_cmd_tbl(argv[0], &cmd_onenand_sub[0], ARRAY_SIZE(cmd_onenand_sub));
646 return c->cmd(cmdtp, flag, argc, argv);
648 return cmd_usage(cmdtp);
652 onenand, CONFIG_SYS_MAXARGS, 1, do_onenand,
653 "OneNAND sub-system",
654 "info - show available OneNAND devices\n"
655 "onenand bad - show bad blocks\n"
656 "onenand read[.oob] addr off size\n"
657 "onenand write[.yaffs] addr off size\n"
658 " read/write 'size' bytes starting at offset 'off'\n"
659 " to/from memory address 'addr', skipping bad blocks.\n"
660 "onenand erase [force] [off size] - erase 'size' bytes from\n"
661 "onenand test [off size] - test 'size' bytes from\n"
662 " offset 'off' (entire device if not specified)\n"
663 "onenand dump[.oob] off - dump page\n"
664 "onenand markbad off [...] - mark bad block(s) at offset (UNSAFE)"