X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=common%2Fcmd_nand.c;h=1482462a509b78f098dffbc05c7309857f858100;hb=c25012b9af1e217958ee74dc8d26742cec613860;hp=84b6272950d91cf4baa2d451a75cf12d7d84b6dc;hpb=93502a5e0adcfc0ce6cf8e3daa7eb9a4f4e53658;p=u-boot

diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index 84b6272950..1482462a50 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -10,6 +10,13 @@
  * (C) Copyright 2006-2007 OpenMoko, Inc.
  * Added 16-bit nand support
  * (C) 2004 Texas Instruments
+ *
+ * Copyright 2010, 2012 Freescale Semiconductor
+ * The portions of this file whose copyright is held by Freescale and which
+ * are not considered a derived work of GPL v2-only code may be distributed
+ * and/or modified under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
  */
 
 #include <common.h>
@@ -30,141 +37,117 @@ int find_dev_and_part(const char *id, struct mtd_device **dev,
 		      u8 *part_num, struct part_info **part);
 #endif
 
-static int nand_dump(nand_info_t *nand, ulong off, int only_oob)
+static int nand_dump(nand_info_t *nand, ulong off, int only_oob, int repeat)
 {
 	int i;
 	u_char *datbuf, *oobbuf, *p;
+	static loff_t last;
+	int ret = 0;
+
+	if (repeat)
+		off = last + nand->writesize;
+
+	last = off;
 
-	datbuf = malloc(nand->writesize + nand->oobsize);
-	oobbuf = malloc(nand->oobsize);
-	if (!datbuf || !oobbuf) {
+	datbuf = memalign(ARCH_DMA_MINALIGN, nand->writesize);
+	if (!datbuf) {
 		puts("No memory for page buffer\n");
 		return 1;
 	}
+
+	oobbuf = memalign(ARCH_DMA_MINALIGN, nand->oobsize);
+	if (!oobbuf) {
+		puts("No memory for page buffer\n");
+		ret = 1;
+		goto free_dat;
+	}
 	off &= ~(nand->writesize - 1);
 	loff_t addr = (loff_t) off;
 	struct mtd_oob_ops ops;
 	memset(&ops, 0, sizeof(ops));
 	ops.datbuf = datbuf;
-	ops.oobbuf = oobbuf; /* must exist, but oob data will be appended to ops.datbuf */
+	ops.oobbuf = oobbuf;
 	ops.len = nand->writesize;
 	ops.ooblen = nand->oobsize;
-	ops.mode = MTD_OOB_RAW;
-	i = nand->read_oob(nand, addr, &ops);
+	ops.mode = MTD_OPS_RAW;
+	i = mtd_read_oob(nand, addr, &ops);
 	if (i < 0) {
 		printf("Error (%d) reading page %08lx\n", i, off);
-		free(datbuf);
-		free(oobbuf);
-		return 1;
+		ret = 1;
+		goto free_all;
 	}
 	printf("Page %08lx dump:\n", off);
-	i = nand->writesize >> 4;
-	p = datbuf;
 
-	while (i--) {
-		if (!only_oob)
+	if (!only_oob) {
+		i = nand->writesize >> 4;
+		p = datbuf;
+
+		while (i--) {
 			printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
 			       "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
 			       p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
 			       p[8], p[9], p[10], p[11], p[12], p[13], p[14],
 			       p[15]);
-		p += 16;
+			p += 16;
+		}
 	}
+
 	puts("OOB:\n");
 	i = nand->oobsize >> 3;
+	p = oobbuf;
 	while (i--) {
 		printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
 		       p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
 		p += 8;
 	}
-	free(datbuf);
+
+free_all:
 	free(oobbuf);
+free_dat:
+	free(datbuf);
 
-	return 0;
+	return ret;
 }
 
 /* ------------------------------------------------------------------------- */
 
-static inline int str2long(char *p, ulong *num)
+static int set_dev(int dev)
 {
-	char *endptr;
-
-	*num = simple_strtoul(p, &endptr, 16);
-	return (*p != '\0' && *endptr == '\0') ? 1 : 0;
-}
-
-static int
-arg_off_size(int argc, char * const argv[], nand_info_t *nand, ulong *off, size_t *size)
-{
-	int idx = nand_curr_device;
-#if defined(CONFIG_CMD_MTDPARTS)
-	struct mtd_device *dev;
-	struct part_info *part;
-	u8 pnum;
-
-	if (argc >= 1 && !(str2long(argv[0], off))) {
-		if ((mtdparts_init() == 0) &&
-		    (find_dev_and_part(argv[0], &dev, &pnum, &part) == 0)) {
-			if (dev->id->type != MTD_DEV_TYPE_NAND) {
-				puts("not a NAND device\n");
-				return -1;
-			}
-			*off = part->offset;
-			if (argc >= 2) {
-				if (!(str2long(argv[1], (ulong *)size))) {
-					printf("'%s' is not a number\n", argv[1]);
-					return -1;
-				}
-				if (*size > part->size)
-					*size = part->size;
-			} else {
-				*size = part->size;
-			}
-			idx = dev->id->num;
-			*nand = nand_info[idx];
-			goto out;
-		}
+	if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
+	    !nand_info[dev].name) {
+		puts("No such device\n");
+		return -1;
 	}
-#endif
 
-	if (argc >= 1) {
-		if (!(str2long(argv[0], off))) {
-			printf("'%s' is not a number\n", argv[0]);
-			return -1;
-		}
-	} else {
-		*off = 0;
-	}
+	if (nand_curr_device == dev)
+		return 0;
 
-	if (argc >= 2) {
-		if (!(str2long(argv[1], (ulong *)size))) {
-			printf("'%s' is not a number\n", argv[1]);
-			return -1;
-		}
-	} else {
-		*size = nand->size - *off;
-	}
+	printf("Device %d: %s", dev, nand_info[dev].name);
+	puts("... is now current device\n");
+	nand_curr_device = dev;
 
-#if defined(CONFIG_CMD_MTDPARTS)
-out:
+#ifdef CONFIG_SYS_NAND_SELECT_DEVICE
+	board_nand_select_device(nand_info[dev].priv, dev);
 #endif
-	printf("device %d ", idx);
-	if (*size == nand->size)
-		puts("whole chip\n");
-	else
-		printf("offset 0x%lx, size 0x%zx\n", *off, *size);
+
 	return 0;
 }
 
 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 static void print_status(ulong start, ulong end, ulong erasesize, int status)
 {
+	/*
+	 * Micron NAND flash (e.g. MT29F4G08ABADAH4) BLOCK LOCK READ STATUS is
+	 * not the same as others.  Instead of bit 1 being lock, it is
+	 * #lock_tight. To make the driver support either format, ignore bit 1
+	 * and use only bit 0 and bit 2.
+	 */
 	printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
 		start,
 		end - 1,
 		(end - start) / erasesize,
 		((status & NAND_LOCK_STATUS_TIGHT) ?  "TIGHT " : ""),
-		((status & NAND_LOCK_STATUS_LOCK) ?  "LOCK " : ""),
+		(!(status & NAND_LOCK_STATUS_UNLOCK) ?  "LOCK " : ""),
 		((status & NAND_LOCK_STATUS_UNLOCK) ?  "UNLOCK " : ""));
 }
 
@@ -200,14 +183,20 @@ static void do_nand_status(nand_info_t *nand)
 #ifdef CONFIG_ENV_OFFSET_OOB
 unsigned long nand_env_oob_offset;
 
-int do_nand_env_oob(cmd_tbl_t *cmdtp, nand_info_t *nand,
-		    int argc, char * const argv[])
+int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[])
 {
 	int ret;
 	uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
-
+	nand_info_t *nand = &nand_info[0];
 	char *cmd = argv[1];
 
+	if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !nand->name) {
+		puts("no devices available\n");
+		return 1;
+	}
+
+	set_dev(0);
+
 	if (!strcmp(cmd, "get")) {
 		ret = get_nand_env_oob(nand, &nand_env_oob_offset);
 		if (ret)
@@ -215,16 +204,27 @@ int do_nand_env_oob(cmd_tbl_t *cmdtp, nand_info_t *nand,
 
 		printf("0x%08lx\n", nand_env_oob_offset);
 	} else if (!strcmp(cmd, "set")) {
-		ulong addr;
-		size_t dummy_size;
+		loff_t addr;
+		loff_t maxsize;
 		struct mtd_oob_ops ops;
+		int idx = 0;
 
 		if (argc < 3)
 			goto usage;
 
-		if (arg_off_size(argc - 2, argv + 2, nand, &addr,
-				 &dummy_size) < 0) {
-			printf("Offset or partition name expected\n");
+		/* We don't care about size, or maxsize. */
+		if (mtd_arg_off(argv[2], &idx, &addr, &maxsize, &maxsize,
+				MTD_DEV_TYPE_NAND, nand_info[idx].size)) {
+			puts("Offset or partition name expected\n");
+			return 1;
+		}
+		if (set_dev(idx)) {
+			puts("Offset or partition name expected\n");
+			return 1;
+		}
+
+		if (idx != 0) {
+			puts("Partition not on first NAND device\n");
 			return 1;
 		}
 
@@ -264,8 +264,8 @@ int do_nand_env_oob(cmd_tbl_t *cmdtp, nand_info_t *nand,
 
 		if (addr != nand_env_oob_offset) {
 			printf("Verification of env offset in OOB failed: "
-			       "0x%08lx expected but got 0x%08lx\n",
-			       addr, nand_env_oob_offset);
+			       "0x%08llx expected but got 0x%08lx\n",
+			       (unsigned long long)addr, nand_env_oob_offset);
 			return 1;
 		}
 	} else {
@@ -275,28 +275,100 @@ int do_nand_env_oob(cmd_tbl_t *cmdtp, nand_info_t *nand,
 	return ret;
 
 usage:
-	cmd_usage(cmdtp);
-	return 1;
+	return CMD_RET_USAGE;
 }
 
 #endif
 
-static void nand_print_info(int idx)
+static void nand_print_and_set_info(int idx)
 {
 	nand_info_t *nand = &nand_info[idx];
 	struct nand_chip *chip = nand->priv;
+
 	printf("Device %d: ", idx);
 	if (chip->numchips > 1)
 		printf("%dx ", chip->numchips);
 	printf("%s, sector size %u KiB\n",
 	       nand->name, nand->erasesize >> 10);
+	printf("  Page size   %8d b\n", nand->writesize);
+	printf("  OOB size    %8d b\n", nand->oobsize);
+	printf("  Erase size  %8d b\n", nand->erasesize);
+	printf("  subpagesize %8d b\n", chip->subpagesize);
+	printf("  options     0x%8x\n", chip->options);
+	printf("  bbt options 0x%8x\n", chip->bbt_options);
+
+	/* Set geometry info */
+	setenv_hex("nand_writesize", nand->writesize);
+	setenv_hex("nand_oobsize", nand->oobsize);
+	setenv_hex("nand_erasesize", nand->erasesize);
 }
 
-int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
+static int raw_access(nand_info_t *nand, ulong addr, loff_t off, ulong count,
+			int read)
 {
-	int i, dev, ret = 0;
-	ulong addr, off;
-	size_t size;
+	int ret = 0;
+
+	while (count--) {
+		/* Raw access */
+		mtd_oob_ops_t ops = {
+			.datbuf = (u8 *)addr,
+			.oobbuf = ((u8 *)addr) + nand->writesize,
+			.len = nand->writesize,
+			.ooblen = nand->oobsize,
+			.mode = MTD_OPS_RAW
+		};
+
+		if (read) {
+			ret = mtd_read_oob(nand, off, &ops);
+		} else {
+			ret = mtd_write_oob(nand, off, &ops);
+			if (!ret)
+				ret = nand_verify_page_oob(nand, &ops, off);
+		}
+
+		if (ret) {
+			printf("%s: error at offset %llx, ret %d\n",
+				__func__, (long long)off, ret);
+			break;
+		}
+
+		addr += nand->writesize + nand->oobsize;
+		off += nand->writesize;
+	}
+
+	return ret;
+}
+
+/* Adjust a chip/partition size down for bad blocks so we don't
+ * read/write past the end of a chip/partition by accident.
+ */
+static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev)
+{
+	/* We grab the nand info object here fresh because this is usually
+	 * called after arg_off_size() which can change the value of dev.
+	 */
+	nand_info_t *nand = &nand_info[dev];
+	loff_t maxoffset = offset + *size;
+	int badblocks = 0;
+
+	/* count badblocks in NAND from offset to offset + size */
+	for (; offset < maxoffset; offset += nand->erasesize) {
+		if (nand_block_isbad(nand, offset))
+			badblocks++;
+	}
+	/* adjust size if any bad blocks found */
+	if (badblocks) {
+		*size -= badblocks * nand->erasesize;
+		printf("size adjusted to 0x%llx (%d bad blocks)\n",
+		       (unsigned long long)*size, badblocks);
+	}
+}
+
+static int do_nand(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	int i, ret = 0;
+	ulong addr;
+	loff_t off, size, maxsize;
 	char *cmd, *s;
 	nand_info_t *nand;
 #ifdef CONFIG_SYS_NAND_QUIET
@@ -305,6 +377,8 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 	int quiet = 0;
 #endif
 	const char *quiet_str = getenv("quiet");
+	int dev = nand_curr_device;
+	int repeat = flag & CMD_FLAG_REPEAT;
 
 	/* at least two arguments please */
 	if (argc < 2)
@@ -315,79 +389,60 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 
 	cmd = argv[1];
 
+	/* Only "dump" is repeatable. */
+	if (repeat && strcmp(cmd, "dump"))
+		return 0;
+
 	if (strcmp(cmd, "info") == 0) {
 
 		putc('\n');
 		for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
 			if (nand_info[i].name)
-				nand_print_info(i);
+				nand_print_and_set_info(i);
 		}
 		return 0;
 	}
 
 	if (strcmp(cmd, "device") == 0) {
-
 		if (argc < 3) {
 			putc('\n');
-			if ((nand_curr_device < 0) ||
-			    (nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE))
+			if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
 				puts("no devices available\n");
 			else
-				nand_print_info(nand_curr_device);
+				nand_print_and_set_info(dev);
 			return 0;
 		}
-		dev = (int)simple_strtoul(argv[2], NULL, 10);
-		if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[dev].name) {
-			puts("No such device\n");
-			return 1;
-		}
-		printf("Device %d: %s", dev, nand_info[dev].name);
-		puts("... is now current device\n");
-		nand_curr_device = dev;
 
-#ifdef CONFIG_SYS_NAND_SELECT_DEVICE
-		/*
-		 * Select the chip in the board/cpu specific driver
-		 */
-		board_nand_select_device(nand_info[dev].priv, dev);
-#endif
+		dev = (int)simple_strtoul(argv[2], NULL, 10);
+		set_dev(dev);
 
 		return 0;
 	}
 
-	if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
-	    strncmp(cmd, "dump", 4) != 0 &&
-	    strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
-	    strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
-	    strcmp(cmd, "biterr") != 0 &&
-	    strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0
-#ifdef CONFIG_ENV_OFFSET_OOB
-	    && strcmp(cmd, "env.oob") != 0
-#endif
-	    )
-		goto usage;
-
 #ifdef CONFIG_ENV_OFFSET_OOB
 	/* this command operates only on the first nand device */
-	if (strcmp(cmd, "env.oob") == 0) {
-		return do_nand_env_oob(cmdtp, &nand_info[0],
-				       argc - 1, argv + 1);
-	}
+	if (strcmp(cmd, "env.oob") == 0)
+		return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
 #endif
 
-	/* the following commands operate on the current device */
-	if (nand_curr_device < 0 || nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE ||
-	    !nand_info[nand_curr_device].name) {
+	/* The following commands operate on the current device, unless
+	 * overridden by a partition specifier.  Note that if somehow the
+	 * current device is invalid, it will have to be changed to a valid
+	 * one before these commands can run, even if a partition specifier
+	 * for another device is to be used.
+	 */
+	if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
+	    !nand_info[dev].name) {
 		puts("\nno devices available\n");
 		return 1;
 	}
-	nand = &nand_info[nand_curr_device];
+	nand = &nand_info[dev];
 
 	if (strcmp(cmd, "bad") == 0) {
-		printf("\nDevice %d bad blocks:\n", nand_curr_device);
+		printf("\nDevice %d bad blocks:\n", dev);
 		for (off = 0; off < nand->size; off += nand->erasesize)
 			if (nand_block_isbad(nand, off))
-				printf("  %08lx\n", off);
+				printf("  %08llx\n", (unsigned long long)off);
 		return 0;
 	}
 
@@ -396,48 +451,76 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 	 *   0    1     2       3    4
 	 *   nand erase [clean] [off size]
 	 */
-	if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
+	if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
 		nand_erase_options_t opts;
 		/* "clean" at index 2 means request to write cleanmarker */
 		int clean = argc > 2 && !strcmp("clean", argv[2]);
-		int o = clean ? 3 : 2;
-		int scrub = !strcmp(cmd, "scrub");
+		int scrub_yes = argc > 2 && !strcmp("-y", argv[2]);
+		int o = (clean || scrub_yes) ? 3 : 2;
+		int scrub = !strncmp(cmd, "scrub", 5);
+		int spread = 0;
+		int args = 2;
+		const char *scrub_warn =
+			"Warning: "
+			"scrub option will erase all factory set bad blocks!\n"
+			"         "
+			"There is no reliable way to recover them.\n"
+			"         "
+			"Use this command only for testing purposes if you\n"
+			"         "
+			"are sure of what you are doing!\n"
+			"\nReally scrub this NAND flash? <y/N>\n";
+
+		if (cmd[5] != 0) {
+			if (!strcmp(&cmd[5], ".spread")) {
+				spread = 1;
+			} else if (!strcmp(&cmd[5], ".part")) {
+				args = 1;
+			} else if (!strcmp(&cmd[5], ".chip")) {
+				args = 0;
+			} else {
+				goto usage;
+			}
+		}
+
+		/*
+		 * Don't allow missing arguments to cause full chip/partition
+		 * erases -- easy to do accidentally, e.g. with a misspelled
+		 * variable name.
+		 */
+		if (argc != o + args)
+			goto usage;
 
-		printf("\nNAND %s: ", scrub ? "scrub" : "erase");
+		printf("\nNAND %s: ", cmd);
 		/* skip first two or three arguments, look for offset and size */
-		if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
+		if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size,
+				     &maxsize, MTD_DEV_TYPE_NAND,
+				     nand_info[dev].size) != 0)
 			return 1;
 
+		if (set_dev(dev))
+			return 1;
+
+		nand = &nand_info[dev];
+
 		memset(&opts, 0, sizeof(opts));
 		opts.offset = off;
 		opts.length = size;
 		opts.jffs2  = clean;
 		opts.quiet  = quiet;
+		opts.spread = spread;
 
 		if (scrub) {
-			puts("Warning: "
-			     "scrub option will erase all factory set "
-			     "bad blocks!\n"
-			     "         "
-			     "There is no reliable way to recover them.\n"
-			     "         "
-			     "Use this command only for testing purposes "
-			     "if you\n"
-			     "         "
-			     "are sure of what you are doing!\n"
-			     "\nReally scrub this NAND flash? <y/N>\n");
-
-			if (getc() == 'y') {
-				puts("y");
-				if (getc() == '\r')
+			if (scrub_yes) {
+				opts.scrub = 1;
+			} else {
+				puts(scrub_warn);
+				if (confirm_yesno()) {
 					opts.scrub = 1;
-				else {
+				} else {
 					puts("scrub aborted\n");
-					return -1;
+					return 1;
 				}
-			} else {
-				puts("scrub aborted\n");
-				return -1;
 			}
 		}
 		ret = nand_erase_opts(nand, &opts);
@@ -450,20 +533,17 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 		if (argc < 3)
 			goto usage;
 
-		s = strchr(cmd, '.');
 		off = (int)simple_strtoul(argv[2], NULL, 16);
-
-		if (s != NULL && strcmp(s, ".oob") == 0)
-			ret = nand_dump(nand, off, 1);
-		else
-			ret = nand_dump(nand, off, 0);
+		ret = nand_dump(nand, off, !strcmp(&cmd[4], ".oob"), repeat);
 
 		return ret == 0 ? 1 : 0;
-
 	}
 
 	if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
+		size_t rwsize;
+		ulong pagecount = 1;
 		int read;
+		int raw = 0;
 
 		if (argc < 4)
 			goto usage;
@@ -472,41 +552,116 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 
 		read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
 		printf("\nNAND %s: ", read ? "read" : "write");
-		if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
-			return 1;
 
 		s = strchr(cmd, '.');
+
+		if (s && !strcmp(s, ".raw")) {
+			raw = 1;
+
+			if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize,
+					MTD_DEV_TYPE_NAND,
+					nand_info[dev].size))
+				return 1;
+
+			if (set_dev(dev))
+				return 1;
+
+			nand = &nand_info[dev];
+
+			if (argc > 4 && !str2long(argv[4], &pagecount)) {
+				printf("'%s' is not a number\n", argv[4]);
+				return 1;
+			}
+
+			if (pagecount * nand->writesize > size) {
+				puts("Size exceeds partition or device limit\n");
+				return -1;
+			}
+
+			rwsize = pagecount * (nand->writesize + nand->oobsize);
+		} else {
+			if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off,
+					     &size, &maxsize,
+					     MTD_DEV_TYPE_NAND,
+					     nand_info[dev].size) != 0)
+				return 1;
+
+			if (set_dev(dev))
+				return 1;
+
+			/* size is unspecified */
+			if (argc < 5)
+				adjust_size_for_badblocks(&size, off, dev);
+			rwsize = size;
+		}
+
+		nand = &nand_info[dev];
+
 		if (!s || !strcmp(s, ".jffs2") ||
 		    !strcmp(s, ".e") || !strcmp(s, ".i")) {
 			if (read)
-				ret = nand_read_skip_bad(nand, off, &size,
+				ret = nand_read_skip_bad(nand, off, &rwsize,
+							 NULL, maxsize,
 							 (u_char *)addr);
 			else
-				ret = nand_write_skip_bad(nand, off, &size,
-							  (u_char *)addr);
+				ret = nand_write_skip_bad(nand, off, &rwsize,
+							  NULL, maxsize,
+							  (u_char *)addr,
+							  WITH_WR_VERIFY);
+#ifdef CONFIG_CMD_NAND_TRIMFFS
+		} else if (!strcmp(s, ".trimffs")) {
+			if (read) {
+				printf("Unknown nand command suffix '%s'\n", s);
+				return 1;
+			}
+			ret = nand_write_skip_bad(nand, off, &rwsize, NULL,
+						maxsize, (u_char *)addr,
+						WITH_DROP_FFS | WITH_WR_VERIFY);
+#endif
 		} else if (!strcmp(s, ".oob")) {
 			/* out-of-band data */
 			mtd_oob_ops_t ops = {
 				.oobbuf = (u8 *)addr,
-				.ooblen = size,
-				.mode = MTD_OOB_RAW
+				.ooblen = rwsize,
+				.mode = MTD_OPS_RAW
 			};
 
 			if (read)
-				ret = nand->read_oob(nand, off, &ops);
+				ret = mtd_read_oob(nand, off, &ops);
 			else
-				ret = nand->write_oob(nand, off, &ops);
+				ret = mtd_write_oob(nand, off, &ops);
+		} else if (raw) {
+			ret = raw_access(nand, addr, off, pagecount, read);
 		} else {
 			printf("Unknown nand command suffix '%s'.\n", s);
 			return 1;
 		}
 
-		printf(" %zu bytes %s: %s\n", size,
+		printf(" %zu bytes %s: %s\n", rwsize,
 		       read ? "read" : "written", ret ? "ERROR" : "OK");
 
 		return ret == 0 ? 0 : 1;
 	}
 
+#ifdef CONFIG_CMD_NAND_TORTURE
+	if (strcmp(cmd, "torture") == 0) {
+		if (argc < 3)
+			goto usage;
+
+		if (!str2off(argv[2], &off)) {
+			puts("Offset is not a valid number\n");
+			return 1;
+		}
+
+		printf("\nNAND torture: device %d offset 0x%llx size 0x%x\n",
+			dev, off, nand->erasesize);
+		ret = nand_torture(nand, off);
+		printf(" %s\n", ret ? "Failed" : "Passed");
+
+		return ret == 0 ? 0 : 1;
+	}
+#endif
+
 	if (strcmp(cmd, "markbad") == 0) {
 		argc -= 2;
 		argv += 2;
@@ -517,7 +672,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 		while (argc > 0) {
 			addr = simple_strtoul(*argv, NULL, 16);
 
-			if (nand->block_markbad(nand, addr)) {
+			if (mtd_block_markbad(nand, addr)) {
 				printf("block 0x%08lx NOT marked "
 					"as bad! ERROR %d\n",
 					addr, ret);
@@ -561,11 +716,23 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 		return 0;
 	}
 
-	if (strcmp(cmd, "unlock") == 0) {
-		if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
+	if (strncmp(cmd, "unlock", 5) == 0) {
+		int allexcept = 0;
+
+		s = strchr(cmd, '.');
+
+		if (s && !strcmp(s, ".allexcept"))
+			allexcept = 1;
+
+		if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size,
+				     &maxsize, MTD_DEV_TYPE_NAND,
+				     nand_info[dev].size) < 0)
 			return 1;
 
-		if (!nand_unlock(nand, off, size)) {
+		if (set_dev(dev))
+			return 1;
+
+		if (!nand_unlock(&nand_info[dev], off, size, allexcept)) {
 			puts("NAND flash successfully unlocked\n");
 		} else {
 			puts("Error unlocking NAND flash, "
@@ -577,30 +744,46 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 #endif
 
 usage:
-	cmd_usage(cmdtp);
-	return 1;
+	return CMD_RET_USAGE;
 }
 
-U_BOOT_CMD(nand, CONFIG_SYS_MAXARGS, 1, do_nand,
-	"NAND sub-system",
+#ifdef CONFIG_SYS_LONGHELP
+static char nand_help_text[] =
 	"info - show available NAND devices\n"
 	"nand device [dev] - show or set current device\n"
 	"nand read - addr off|partition size\n"
 	"nand write - addr off|partition size\n"
 	"    read/write 'size' bytes starting at offset 'off'\n"
 	"    to/from memory address 'addr', skipping bad blocks.\n"
-	"nand erase [clean] [off size] - erase 'size' bytes from\n"
-	"    offset 'off' (entire device if not specified)\n"
+	"nand read.raw - addr off|partition [count]\n"
+	"nand write.raw - addr off|partition [count]\n"
+	"    Use read.raw/write.raw to avoid ECC and access the flash as-is.\n"
+#ifdef CONFIG_CMD_NAND_TRIMFFS
+	"nand write.trimffs - addr off|partition size\n"
+	"    write 'size' bytes starting at offset 'off' from memory address\n"
+	"    'addr', skipping bad blocks and dropping any pages at the end\n"
+	"    of eraseblocks that contain only 0xFF\n"
+#endif
+	"nand erase[.spread] [clean] off size - erase 'size' bytes "
+	"from offset 'off'\n"
+	"    With '.spread', erase enough for given file size, otherwise,\n"
+	"    'size' includes skipped bad blocks.\n"
+	"nand erase.part [clean] partition - erase entire mtd partition'\n"
+	"nand erase.chip [clean] - erase entire chip'\n"
 	"nand bad - show bad blocks\n"
 	"nand dump[.oob] off - dump page\n"
-	"nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
+#ifdef CONFIG_CMD_NAND_TORTURE
+	"nand torture off - torture block at offset\n"
+#endif
+	"nand scrub [-y] off size | scrub.part partition | scrub.chip\n"
+	"    really clean NAND erasing bad blocks (UNSAFE)\n"
 	"nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
 	"nand biterr off - make a bit error at offset (UNSAFE)"
 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
 	"\n"
 	"nand lock [tight] [status]\n"
 	"    bring nand to lock state or display locked pages\n"
-	"nand unlock [offset] [size] - unlock section"
+	"nand unlock[.allexcept] [offset] [size] - unlock section"
 #endif
 #ifdef CONFIG_ENV_OFFSET_OOB
 	"\n"
@@ -609,15 +792,23 @@ U_BOOT_CMD(nand, CONFIG_SYS_MAXARGS, 1, do_nand,
 	"nand env.oob set off|partition - set enviromnent offset\n"
 	"nand env.oob get - get environment offset"
 #endif
+	"";
+#endif
+
+U_BOOT_CMD(
+	nand, CONFIG_SYS_MAXARGS, 1, do_nand,
+	"NAND sub-system", nand_help_text
 );
 
 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 			   ulong offset, ulong addr, char *cmd)
 {
 	int r;
-	char *ep, *s;
+	char *s;
 	size_t cnt;
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	image_header_t *hdr;
+#endif
 #if defined(CONFIG_FIT)
 	const void *fit_hdr = NULL;
 #endif
@@ -626,30 +817,33 @@ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 	if (s != NULL &&
 	    (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
 		printf("Unknown nand load suffix '%s'\n", s);
-		show_boot_progress(-53);
+		bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
 		return 1;
 	}
 
 	printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
 
 	cnt = nand->writesize;
-	r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
+	r = nand_read_skip_bad(nand, offset, &cnt, NULL, nand->size,
+			(u_char *)addr);
 	if (r) {
 		puts("** Read error\n");
-		show_boot_progress (-56);
+		bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ);
 		return 1;
 	}
-	show_boot_progress (56);
+	bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ);
 
 	switch (genimg_get_format ((void *)addr)) {
+#if defined(CONFIG_IMAGE_FORMAT_LEGACY)
 	case IMAGE_FORMAT_LEGACY:
 		hdr = (image_header_t *)addr;
 
-		show_boot_progress (57);
+		bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
 		image_print_contents (hdr);
 
 		cnt = image_get_image_size (hdr);
 		break;
+#endif
 #if defined(CONFIG_FIT)
 	case IMAGE_FORMAT_FIT:
 		fit_hdr = (const void *)addr;
@@ -659,29 +853,30 @@ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 		break;
 #endif
 	default:
-		show_boot_progress (-57);
+		bootstage_error(BOOTSTAGE_ID_NAND_TYPE);
 		puts ("** Unknown image type\n");
 		return 1;
 	}
-	show_boot_progress (57);
+	bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
 
-	r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
+	r = nand_read_skip_bad(nand, offset, &cnt, NULL, nand->size,
+			(u_char *)addr);
 	if (r) {
 		puts("** Read error\n");
-		show_boot_progress (-58);
+		bootstage_error(BOOTSTAGE_ID_NAND_READ);
 		return 1;
 	}
-	show_boot_progress (58);
+	bootstage_mark(BOOTSTAGE_ID_NAND_READ);
 
 #if defined(CONFIG_FIT)
 	/* This cannot be done earlier, we need complete FIT image in RAM first */
 	if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
 		if (!fit_check_format (fit_hdr)) {
-			show_boot_progress (-150);
+			bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ);
 			puts ("** Bad FIT image format\n");
 			return 1;
 		}
-		show_boot_progress (151);
+		bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK);
 		fit_print_contents (fit_hdr);
 	}
 #endif
@@ -690,23 +885,11 @@ static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
 
 	load_addr = addr;
 
-	/* Check if we should attempt an auto-start */
-	if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
-		char *local_args[2];
-		extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
-
-		local_args[0] = cmd;
-		local_args[1] = NULL;
-
-		printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
-
-		do_bootm(cmdtp, 0, 1, local_args);
-		return 1;
-	}
-	return 0;
+	return bootm_maybe_autostart(cmdtp, cmd);
 }
 
-int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
+static int do_nandboot(cmd_tbl_t *cmdtp, int flag, int argc,
+		       char * const argv[])
 {
 	char *boot_device = NULL;
 	int idx;
@@ -736,7 +919,7 @@ int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 	}
 #endif
 
-	show_boot_progress(52);
+	bootstage_mark(BOOTSTAGE_ID_NAND_PART);
 	switch (argc) {
 	case 1:
 		addr = CONFIG_SYS_LOAD_ADDR;
@@ -759,27 +942,26 @@ int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 #if defined(CONFIG_CMD_MTDPARTS)
 usage:
 #endif
-		cmd_usage(cmdtp);
-		show_boot_progress(-53);
-		return 1;
+		bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
+		return CMD_RET_USAGE;
 	}
+	bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX);
 
-	show_boot_progress(53);
 	if (!boot_device) {
 		puts("\n** No boot device **\n");
-		show_boot_progress(-54);
+		bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
 		return 1;
 	}
-	show_boot_progress(54);
+	bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
 
 	idx = simple_strtoul(boot_device, NULL, 16);
 
 	if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx].name) {
 		printf("\n** Device %d not available\n", idx);
-		show_boot_progress(-55);
+		bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE);
 		return 1;
 	}
-	show_boot_progress(55);
+	bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE);
 
 	return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
 }