Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6: (90 commits)
  jffs2: Fix long-standing bug with symlink garbage collection.
  mtd: OneNAND: Fix test of unsigned in onenand_otp_walk()
  mtd: cfi_cmdset_0002, fix lock imbalance
  Revert "mtd: move mxcnd_remove to .exit.text"
  mtd: m25p80: add support for Macronix MX25L4005A
  kmsg_dump: fix build for CONFIG_PRINTK=n
  mtd: nandsim: add support for 4KiB pages
  mtd: mtdoops: refactor as a kmsg_dumper
  mtd: mtdoops: make record size configurable
  mtd: mtdoops: limit the maximum mtd partition size
  mtd: mtdoops: keep track of used/unused pages in an array
  mtd: mtdoops: several minor cleanups
  core: Add kernel message dumper to call on oopses and panics
  mtd: add ARM pismo support
  mtd: pxa3xx_nand: Fix PIO data transfer
  mtd: nand: fix multi-chip suspend problem
  mtd: add support for switching old SST chips into QRY mode
  mtd: fix M29W800D dev_id and uaddr
  mtd: don't use PF_MEMALLOC
  mtd: Add bad block table overrides to Davinci NAND driver
  ...

Fixed up conflicts (mostly trivial) in
	drivers/mtd/devices/m25p80.c
	drivers/mtd/maps/pcmciamtd.c
	drivers/mtd/nand/pxa3xx_nand.c
	kernel/printk.c

2 files changed, 620 insertions, 147 deletions

diff --git a/drivers/mtd/onenand/omap2.c b/drivers/mtd/onenand/omap2.c
index 86c4f6dcdc65..75f38b95811e 100644
--- a/drivers/mtd/onenand/omap2.c
+++ b/drivers/mtd/onenand/omap2.c
@@ -112,10 +112,24 @@ static int omap2_onenand_wait(struct mtd_info *mtd, int state)
 	unsigned long timeout;
 	u32 syscfg;
 
-	if (state == FL_RESETING) {
-		int i;
+	if (state == FL_RESETING || state == FL_PREPARING_ERASE ||
+	    state == FL_VERIFYING_ERASE) {
+		int i = 21;
+		unsigned int intr_flags = ONENAND_INT_MASTER;
+
+		switch (state) {
+		case FL_RESETING:
+			intr_flags |= ONENAND_INT_RESET;
+			break;
+		case FL_PREPARING_ERASE:
+			intr_flags |= ONENAND_INT_ERASE;
+			break;
+		case FL_VERIFYING_ERASE:
+			i = 101;
+			break;
+		}
 
-		for (i = 0; i < 20; i++) {
+		while (--i) {
 			udelay(1);
 			intr = read_reg(c, ONENAND_REG_INTERRUPT);
 			if (intr & ONENAND_INT_MASTER)
@@ -126,7 +140,7 @@ static int omap2_onenand_wait(struct mtd_info *mtd, int state)
 			wait_err("controller error", state, ctrl, intr);
 			return -EIO;
 		}
-		if (!(intr & ONENAND_INT_RESET)) {
+		if ((intr & intr_flags) != intr_flags) {
 			wait_err("timeout", state, ctrl, intr);
 			return -EIO;
 		}
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c
index ff66e4330aa7..f63b1db3ffb3 100644
--- a/drivers/mtd/onenand/onenand_base.c
+++ b/drivers/mtd/onenand/onenand_base.c
@@ -1,17 +1,19 @@
 /*
  *  linux/drivers/mtd/onenand/onenand_base.c
  *
- *  Copyright (C) 2005-2007 Samsung Electronics
+ *  Copyright © 2005-2009 Samsung Electronics
+ *  Copyright © 2007 Nokia Corporation
+ *
  *  Kyungmin Park <kyungmin.park@samsung.com>
  *
  *  Credits:
  *	Adrian Hunter <ext-adrian.hunter@nokia.com>:
  *	auto-placement support, read-while load support, various fixes
- *	Copyright (C) Nokia Corporation, 2007
  *
  *	Vishak G <vishak.g at samsung.com>, Rohit Hagargundgi <h.rohit at samsung.com>
  *	Flex-OneNAND support
- *	Copyright (C) Samsung Electronics, 2008
+ *	Amul Kumar Saha <amul.saha at samsung.com>
+ *	OTP support
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -32,6 +34,13 @@
 
 #include <asm/io.h>
 
+/*
+ * Multiblock erase if number of blocks to erase is 2 or more.
+ * Maximum number of blocks for simultaneous erase is 64.
+ */
+#define MB_ERASE_MIN_BLK_COUNT 2
+#define MB_ERASE_MAX_BLK_COUNT 64
+
 /* Default Flex-OneNAND boundary and lock respectively */
 static int flex_bdry[MAX_DIES * 2] = { -1, 0, -1, 0 };
 
@@ -43,6 +52,18 @@ MODULE_PARM_DESC(flex_bdry,	"SLC Boundary information for Flex-OneNAND"
 				"    : 0->Set boundary in unlocked status"
 				"    : 1->Set boundary in locked status");
 
+/* Default OneNAND/Flex-OneNAND OTP options*/
+static int otp;
+
+module_param(otp, int, 0400);
+MODULE_PARM_DESC(otp,	"Corresponding behaviour of OneNAND in OTP"
+			"Syntax : otp=LOCK_TYPE"
+			"LOCK_TYPE : Keys issued, for specific OTP Lock type"
+			"	   : 0 -> Default (No Blocks Locked)"
+			"	   : 1 -> OTP Block lock"
+			"	   : 2 -> 1st Block lock"
+			"	   : 3 -> BOTH OTP Block and 1st Block lock");
+
 /**
  *  onenand_oob_128 - oob info for Flex-Onenand with 4KB page
  *  For now, we expose only 64 out of 80 ecc bytes
@@ -339,6 +360,8 @@ static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t le
 		break;
 
 	case ONENAND_CMD_ERASE:
+	case ONENAND_CMD_MULTIBLOCK_ERASE:
+	case ONENAND_CMD_ERASE_VERIFY:
 	case ONENAND_CMD_BUFFERRAM:
 	case ONENAND_CMD_OTP_ACCESS:
 		block = onenand_block(this, addr);
@@ -483,7 +506,7 @@ static int onenand_wait(struct mtd_info *mtd, int state)
 		if (interrupt & flags)
 			break;
 
-		if (state != FL_READING)
+		if (state != FL_READING && state != FL_PREPARING_ERASE)
 			cond_resched();
 	}
 	/* To get correct interrupt status in timeout case */
@@ -500,25 +523,40 @@ static int onenand_wait(struct mtd_info *mtd, int state)
 		int ecc = onenand_read_ecc(this);
 		if (ecc) {
 			if (ecc & ONENAND_ECC_2BIT_ALL) {
-				printk(KERN_ERR "onenand_wait: ECC error = 0x%04x\n", ecc);
+				printk(KERN_ERR "%s: ECC error = 0x%04x\n",
+					__func__, ecc);
 				mtd->ecc_stats.failed++;
 				return -EBADMSG;
 			} else if (ecc & ONENAND_ECC_1BIT_ALL) {
-				printk(KERN_DEBUG "onenand_wait: correctable ECC error = 0x%04x\n", ecc);
+				printk(KERN_DEBUG "%s: correctable ECC error = 0x%04x\n",
+					__func__, ecc);
 				mtd->ecc_stats.corrected++;
 			}
 		}
 	} else if (state == FL_READING) {
-		printk(KERN_ERR "onenand_wait: read timeout! ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt);
+		printk(KERN_ERR "%s: read timeout! ctrl=0x%04x intr=0x%04x\n",
+			__func__, ctrl, interrupt);
+		return -EIO;
+	}
+
+	if (state == FL_PREPARING_ERASE && !(interrupt & ONENAND_INT_ERASE)) {
+		printk(KERN_ERR "%s: mb erase timeout! ctrl=0x%04x intr=0x%04x\n",
+		       __func__, ctrl, interrupt);
+		return -EIO;
+	}
+
+	if (!(interrupt & ONENAND_INT_MASTER)) {
+		printk(KERN_ERR "%s: timeout! ctrl=0x%04x intr=0x%04x\n",
+		       __func__, ctrl, interrupt);
 		return -EIO;
 	}
 
 	/* If there's controller error, it's a real error */
 	if (ctrl & ONENAND_CTRL_ERROR) {
-		printk(KERN_ERR "onenand_wait: controller error = 0x%04x\n",
-			ctrl);
+		printk(KERN_ERR "%s: controller error = 0x%04x\n",
+			__func__, ctrl);
 		if (ctrl & ONENAND_CTRL_LOCK)
-			printk(KERN_ERR "onenand_wait: it's locked error.\n");
+			printk(KERN_ERR "%s: it's locked error.\n", __func__);
 		return -EIO;
 	}
 
@@ -1015,7 +1053,8 @@ static int onenand_recover_lsb(struct mtd_info *mtd, loff_t addr, int status)
 	/* We are attempting to reread, so decrement stats.failed
 	 * which was incremented by onenand_wait due to read failure
 	 */
-	printk(KERN_INFO "onenand_recover_lsb: Attempting to recover from uncorrectable read\n");
+	printk(KERN_INFO "%s: Attempting to recover from uncorrectable read\n",
+		__func__);
 	mtd->ecc_stats.failed--;
 
 	/* Issue the LSB page recovery command */
@@ -1046,7 +1085,8 @@ static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from,
 	int ret = 0;
 	int writesize = this->writesize;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_mlc_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
+	DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n",
+	      __func__, (unsigned int) from, (int) len);
 
 	if (ops->mode == MTD_OOB_AUTO)
 		oobsize = this->ecclayout->oobavail;
@@ -1057,7 +1097,8 @@ static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from,
 
 	/* Do not allow reads past end of device */
 	if (from + len > mtd->size) {
-		printk(KERN_ERR "onenand_mlc_read_ops_nolock: Attempt read beyond end of device\n");
+		printk(KERN_ERR "%s: Attempt read beyond end of device\n",
+			__func__);
 		ops->retlen = 0;
 		ops->oobretlen = 0;
 		return -EINVAL;
@@ -1146,7 +1187,8 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from,
 	int ret = 0, boundary = 0;
 	int writesize = this->writesize;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
+	DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n",
+			__func__, (unsigned int) from, (int) len);
 
 	if (ops->mode == MTD_OOB_AUTO)
 		oobsize = this->ecclayout->oobavail;
@@ -1157,7 +1199,8 @@ static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from,
 
 	/* Do not allow reads past end of device */
 	if ((from + len) > mtd->size) {
-		printk(KERN_ERR "onenand_read_ops_nolock: Attempt read beyond end of device\n");
+		printk(KERN_ERR "%s: Attempt read beyond end of device\n",
+			__func__);
 		ops->retlen = 0;
 		ops->oobretlen = 0;
 		return -EINVAL;
@@ -1275,7 +1318,8 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from,
 
 	from += ops->ooboffs;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_oob_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len);
+	DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n",
+		__func__, (unsigned int) from, (int) len);
 
 	/* Initialize return length value */
 	ops->oobretlen = 0;
@@ -1288,7 +1332,8 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from,
 	column = from & (mtd->oobsize - 1);
 
 	if (unlikely(column >= oobsize)) {
-		printk(KERN_ERR "onenand_read_oob_nolock: Attempted to start read outside oob\n");
+		printk(KERN_ERR "%s: Attempted to start read outside oob\n",
+			__func__);
 		return -EINVAL;
 	}
 
@@ -1296,7 +1341,8 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from,
 	if (unlikely(from >= mtd->size ||
 		     column + len > ((mtd->size >> this->page_shift) -
 				     (from >> this->page_shift)) * oobsize)) {
-		printk(KERN_ERR "onenand_read_oob_nolock: Attempted to read beyond end of device\n");
+		printk(KERN_ERR "%s: Attempted to read beyond end of device\n",
+			__func__);
 		return -EINVAL;
 	}
 
@@ -1319,7 +1365,8 @@ static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from,
 			ret = onenand_recover_lsb(mtd, from, ret);
 
 		if (ret && ret != -EBADMSG) {
-			printk(KERN_ERR "onenand_read_oob_nolock: read failed = 0x%x\n", ret);
+			printk(KERN_ERR "%s: read failed = 0x%x\n",
+				__func__, ret);
 			break;
 		}
 
@@ -1450,20 +1497,21 @@ static int onenand_bbt_wait(struct mtd_info *mtd, int state)
 	if (interrupt & ONENAND_INT_READ) {
 		int ecc = onenand_read_ecc(this);
 		if (ecc & ONENAND_ECC_2BIT_ALL) {
-			printk(KERN_INFO "onenand_bbt_wait: ecc error = 0x%04x"
-				", controller error 0x%04x\n", ecc, ctrl);
+			printk(KERN_WARNING "%s: ecc error = 0x%04x, "
+				"controller error 0x%04x\n",
+				__func__, ecc, ctrl);
 			return ONENAND_BBT_READ_ECC_ERROR;
 		}
 	} else {
-		printk(KERN_ERR "onenand_bbt_wait: read timeout!"
-			"ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt);
+		printk(KERN_ERR "%s: read timeout! ctrl=0x%04x intr=0x%04x\n",
+			__func__, ctrl, interrupt);
 		return ONENAND_BBT_READ_FATAL_ERROR;
 	}
 
 	/* Initial bad block case: 0x2400 or 0x0400 */
 	if (ctrl & ONENAND_CTRL_ERROR) {
-		printk(KERN_DEBUG "onenand_bbt_wait: "
-			"controller error = 0x%04x\n", ctrl);
+		printk(KERN_DEBUG "%s: controller error = 0x%04x\n",
+			__func__, ctrl);
 		return ONENAND_BBT_READ_ERROR;
 	}
 
@@ -1487,14 +1535,16 @@ int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from,
 	size_t len = ops->ooblen;
 	u_char *buf = ops->oobbuf;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_bbt_read_oob: from = 0x%08x, len = %zi\n", (unsigned int) from, len);
+	DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %zi\n",
+		__func__, (unsigned int) from, len);
 
 	/* Initialize return value */
 	ops->oobretlen = 0;
 
 	/* Do not allow reads past end of device */
 	if (unlikely((from + len) > mtd->size)) {
-		printk(KERN_ERR "onenand_bbt_read_oob: Attempt read beyond end of device\n");
+		printk(KERN_ERR "%s: Attempt read beyond end of device\n",
+			__func__);
 		return ONENAND_BBT_READ_FATAL_ERROR;
 	}
 
@@ -1661,21 +1711,23 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
 	/* Wait for any existing operation to clear */
 	onenand_panic_wait(mtd);
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_panic_write: to = 0x%08x, len = %i\n",
-	      (unsigned int) to, (int) len);
+	DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n",
+		__func__, (unsigned int) to, (int) len);
 
 	/* Initialize retlen, in case of early exit */
 	*retlen = 0;
 
 	/* Do not allow writes past end of device */
 	if (unlikely((to + len) > mtd->size)) {
-		printk(KERN_ERR "onenand_panic_write: Attempt write to past end of device\n");
+		printk(KERN_ERR "%s: Attempt write to past end of device\n",
+			__func__);
 		return -EINVAL;
 	}
 
 	/* Reject writes, which are not page aligned */
         if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) {
-                printk(KERN_ERR "onenand_panic_write: Attempt to write not page aligned data\n");
+		printk(KERN_ERR "%s: Attempt to write not page aligned data\n",
+			__func__);
                 return -EINVAL;
         }
 
@@ -1711,7 +1763,7 @@ static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len,
 		}
 
 		if (ret) {
-			printk(KERN_ERR "onenand_panic_write: write failed %d\n", ret);
+			printk(KERN_ERR "%s: write failed %d\n", __func__, ret);
 			break;
 		}
 
@@ -1792,7 +1844,8 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
 	u_char *oobbuf;
 	int ret = 0;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ops_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
+	DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n",
+		__func__, (unsigned int) to, (int) len);
 
 	/* Initialize retlen, in case of early exit */
 	ops->retlen = 0;
@@ -1800,13 +1853,15 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
 
 	/* Do not allow writes past end of device */
 	if (unlikely((to + len) > mtd->size)) {
-		printk(KERN_ERR "onenand_write_ops_nolock: Attempt write to past end of device\n");
+		printk(KERN_ERR "%s: Attempt write to past end of device\n",
+			__func__);
 		return -EINVAL;
 	}
 
 	/* Reject writes, which are not page aligned */
         if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) {
-                printk(KERN_ERR "onenand_write_ops_nolock: Attempt to write not page aligned data\n");
+		printk(KERN_ERR "%s: Attempt to write not page aligned data\n",
+			__func__);
                 return -EINVAL;
         }
 
@@ -1879,7 +1934,8 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
 			onenand_update_bufferram(mtd, prev, !ret && !prev_subpage);
 			if (ret) {
 				written -= prevlen;
-				printk(KERN_ERR "onenand_write_ops_nolock: write failed %d\n", ret);
+				printk(KERN_ERR "%s: write failed %d\n",
+					__func__, ret);
 				break;
 			}
 
@@ -1887,7 +1943,8 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
 				/* Only check verify write turn on */
 				ret = onenand_verify(mtd, buf - len, to - len, len);
 				if (ret)
-					printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret);
+					printk(KERN_ERR "%s: verify failed %d\n",
+						__func__, ret);
 				break;
 			}
 
@@ -1905,14 +1962,16 @@ static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to,
 			/* In partial page write we don't update bufferram */
 			onenand_update_bufferram(mtd, to, !ret && !subpage);
 			if (ret) {
-				printk(KERN_ERR "onenand_write_ops_nolock: write failed %d\n", ret);
+				printk(KERN_ERR "%s: write failed %d\n",
+					__func__, ret);
 				break;
 			}
 
 			/* Only check verify write turn on */
 			ret = onenand_verify(mtd, buf, to, thislen);
 			if (ret) {
-				printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret);
+				printk(KERN_ERR "%s: verify failed %d\n",
+					__func__, ret);
 				break;
 			}
 
@@ -1968,7 +2027,8 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to,
 
 	to += ops->ooboffs;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len);
+	DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n",
+		__func__, (unsigned int) to, (int) len);
 
 	/* Initialize retlen, in case of early exit */
 	ops->oobretlen = 0;
@@ -1981,14 +2041,15 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to,
 	column = to & (mtd->oobsize - 1);
 
 	if (unlikely(column >= oobsize)) {
-		printk(KERN_ERR "onenand_write_oob_nolock: Attempted to start write outside oob\n");
+		printk(KERN_ERR "%s: Attempted to start write outside oob\n",
+			__func__);
 		return -EINVAL;
 	}
 
 	/* For compatibility with NAND: Do not allow write past end of page */
 	if (unlikely(column + len > oobsize)) {
-		printk(KERN_ERR "onenand_write_oob_nolock: "
-		      "Attempt to write past end of page\n");
+		printk(KERN_ERR "%s: Attempt to write past end of page\n",
+			__func__);
 		return -EINVAL;
 	}
 
@@ -1996,7 +2057,8 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to,
 	if (unlikely(to >= mtd->size ||
 		     column + len > ((mtd->size >> this->page_shift) -
 				     (to >> this->page_shift)) * oobsize)) {
-		printk(KERN_ERR "onenand_write_oob_nolock: Attempted to write past end of device\n");
+		printk(KERN_ERR "%s: Attempted to write past end of device\n",
+		       __func__);
 		return -EINVAL;
 	}
 
@@ -2038,13 +2100,14 @@ static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to,
 
 		ret = this->wait(mtd, FL_WRITING);
 		if (ret) {
-			printk(KERN_ERR "onenand_write_oob_nolock: write failed %d\n", ret);
+			printk(KERN_ERR "%s: write failed %d\n", __func__, ret);
 			break;
 		}
 
 		ret = onenand_verify_oob(mtd, oobbuf, to);
 		if (ret) {
-			printk(KERN_ERR "onenand_write_oob_nolock: verify failed %d\n", ret);
+			printk(KERN_ERR "%s: verify failed %d\n",
+				__func__, ret);
 			break;
 		}
 
@@ -2140,78 +2203,186 @@ static int onenand_block_isbad_nolock(struct mtd_info *mtd, loff_t ofs, int allo
 	return bbm->isbad_bbt(mtd, ofs, allowbbt);
 }
 
+
+static int onenand_multiblock_erase_verify(struct mtd_info *mtd,
+					   struct erase_info *instr)
+{
+	struct onenand_chip *this = mtd->priv;
+	loff_t addr = instr->addr;
+	int len = instr->len;
+	unsigned int block_size = (1 << this->erase_shift);
+	int ret = 0;
+
+	while (len) {
+		this->command(mtd, ONENAND_CMD_ERASE_VERIFY, addr, block_size);
+		ret = this->wait(mtd, FL_VERIFYING_ERASE);
+		if (ret) {
+			printk(KERN_ERR "%s: Failed verify, block %d\n",
+			       __func__, onenand_block(this, addr));
+			instr->state = MTD_ERASE_FAILED;
+			instr->fail_addr = addr;
+			return -1;
+		}
+		len -= block_size;
+		addr += block_size;
+	}
+	return 0;
+}
+
 /**
- * onenand_erase - [MTD Interface] erase block(s)
+ * onenand_multiblock_erase - [Internal] erase block(s) using multiblock erase
  * @param mtd		MTD device structure
  * @param instr		erase instruction
+ * @param region	erase region
  *
- * Erase one ore more blocks
+ * Erase one or more blocks up to 64 block at a time
  */
-static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
+static int onenand_multiblock_erase(struct mtd_info *mtd,
+				    struct erase_info *instr,
+				    unsigned int block_size)
 {
 	struct onenand_chip *this = mtd->priv;
-	unsigned int block_size;
 	loff_t addr = instr->addr;
-	loff_t len = instr->len;
-	int ret = 0, i;
-	struct mtd_erase_region_info *region = NULL;
-	loff_t region_end = 0;
+	int len = instr->len;
+	int eb_count = 0;
+	int ret = 0;
+	int bdry_block = 0;
 
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%012llx, len = %llu\n", (unsigned long long) instr->addr, (unsigned long long) instr->len);
+	instr->state = MTD_ERASING;
 
-	/* Do not allow erase past end of device */
-	if (unlikely((len + addr) > mtd->size)) {
-		printk(KERN_ERR "onenand_erase: Erase past end of device\n");
-		return -EINVAL;
+	if (ONENAND_IS_DDP(this)) {
+		loff_t bdry_addr = this->chipsize >> 1;
+		if (addr < bdry_addr && (addr + len) > bdry_addr)
+			bdry_block = bdry_addr >> this->erase_shift;
 	}
 
-	if (FLEXONENAND(this)) {
-		/* Find the eraseregion of this address */
-		i = flexonenand_region(mtd, addr);
-		region = &mtd->eraseregions[i];
+	/* Pre-check bbs */
+	while (len) {
+		/* Check if we have a bad block, we do not erase bad blocks */
+		if (onenand_block_isbad_nolock(mtd, addr, 0)) {
+			printk(KERN_WARNING "%s: attempt to erase a bad block "
+			       "at addr 0x%012llx\n",
+			       __func__, (unsigned long long) addr);
+			instr->state = MTD_ERASE_FAILED;
+			return -EIO;
+		}
+		len -= block_size;
+		addr += block_size;
+	}
 
-		block_size = region->erasesize;
-		region_end = region->offset + region->erasesize * region->numblocks;
+	len = instr->len;
+	addr = instr->addr;
 
-		/* Start address within region must align on block boundary.
-		 * Erase region's start offset is always block start address.
-		 */
-		if (unlikely((addr - region->offset) & (block_size - 1))) {
-			printk(KERN_ERR "onenand_erase: Unaligned address\n");
-			return -EINVAL;
+	/* loop over 64 eb batches */
+	while (len) {
+		struct erase_info verify_instr = *instr;
+		int max_eb_count = MB_ERASE_MAX_BLK_COUNT;
+
+		verify_instr.addr = addr;
+		verify_instr.len = 0;
+
+		/* do not cross chip boundary */
+		if (bdry_block) {
+			int this_block = (addr >> this->erase_shift);
+
+			if (this_block < bdry_block) {
+				max_eb_count = min(max_eb_count,
+						   (bdry_block - this_block));
+			}
 		}
-	} else {
-		block_size = 1 << this->erase_shift;
 
-		/* Start address must align on block boundary */
-		if (unlikely(addr & (block_size - 1))) {
-			printk(KERN_ERR "onenand_erase: Unaligned address\n");
-			return -EINVAL;
+		eb_count = 0;
+
+		while (len > block_size && eb_count < (max_eb_count - 1)) {
+			this->command(mtd, ONENAND_CMD_MULTIBLOCK_ERASE,
+				      addr, block_size);
+			onenand_invalidate_bufferram(mtd, addr, block_size);
+
+			ret = this->wait(mtd, FL_PREPARING_ERASE);
+			if (ret) {
+				printk(KERN_ERR "%s: Failed multiblock erase, "
+				       "block %d\n", __func__,
+				       onenand_block(this, addr));
+				instr->state = MTD_ERASE_FAILED;
+				instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
+				return -EIO;
+			}
+
+			len -= block_size;
+			addr += block_size;
+			eb_count++;
+		}
+
+		/* last block of 64-eb series */
+		cond_resched();
+		this->command(mtd, ONENAND_CMD_ERASE, addr, block_size);
+		onenand_invalidate_bufferram(mtd, addr, block_size);
+
+		ret = this->wait(mtd, FL_ERASING);
+		/* Check if it is write protected */
+		if (ret) {
+			printk(KERN_ERR "%s: Failed erase, block %d\n",
+			       __func__, onenand_block(this, addr));
+			instr->state = MTD_ERASE_FAILED;
+			instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
+			return -EIO;
+		}
+
+		len -= block_size;
+		addr += block_size;
+		eb_count++;
+
+		/* verify */
+		verify_instr.len = eb_count * block_size;
+		if (onenand_multiblock_erase_verify(mtd, &verify_instr)) {
+			instr->state = verify_instr.state;
+			instr->fail_addr = verify_instr.fail_addr;
+			return -EIO;
 		}
-	}
 
-	/* Length must align on block boundary */
-	if (unlikely(len & (block_size - 1))) {
-		printk(KERN_ERR "onenand_erase: Length not block aligned\n");
-		return -EINVAL;
 	}
+	return 0;
+}
 
-	instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
 
-	/* Grab the lock and see if the device is available */
-	onenand_get_device(mtd, FL_ERASING);
+/**
+ * onenand_block_by_block_erase - [Internal] erase block(s) using regular erase
+ * @param mtd		MTD device structure
+ * @param instr		erase instruction
+ * @param region	erase region
+ * @param block_size	erase block size
+ *
+ * Erase one or more blocks one block at a time
+ */
+static int onenand_block_by_block_erase(struct mtd_info *mtd,
+					struct erase_info *instr,
+					struct mtd_erase_region_info *region,
+					unsigned int block_size)
+{
+	struct onenand_chip *this = mtd->priv;
+	loff_t addr = instr->addr;
+	int len = instr->len;
+	loff_t region_end = 0;
+	int ret = 0;
+
+	if (region) {
+		/* region is set for Flex-OneNAND */
+		region_end = region->offset + region->erasesize * region->numblocks;
+	}
 
-	/* Loop through the blocks */
 	instr->state = MTD_ERASING;
 
+	/* Loop through the blocks */
 	while (len) {
 		cond_resched();
 
 		/* Check if we have a bad block, we do not erase bad blocks */
 		if (onenand_block_isbad_nolock(mtd, addr, 0)) {
-			printk (KERN_WARNING "onenand_erase: attempt to erase a bad block at addr 0x%012llx\n", (unsigned long long) addr);
+			printk(KERN_WARNING "%s: attempt to erase a bad block "
+					"at addr 0x%012llx\n",
+					__func__, (unsigned long long) addr);
 			instr->state = MTD_ERASE_FAILED;
-			goto erase_exit;
+			return -EIO;
 		}
 
 		this->command(mtd, ONENAND_CMD_ERASE, addr, block_size);
@@ -2221,11 +2392,11 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
 		ret = this->wait(mtd, FL_ERASING);
 		/* Check, if it is write protected */
 		if (ret) {
-			printk(KERN_ERR "onenand_erase: Failed erase, block %d\n",
-						 onenand_block(this, addr));
+			printk(KERN_ERR "%s: Failed erase, block %d\n",
+				__func__, onenand_block(this, addr));
 			instr->state = MTD_ERASE_FAILED;
 			instr->fail_addr = addr;
-			goto erase_exit;
+			return -EIO;
 		}
 
 		len -= block_size;
@@ -2241,25 +2412,88 @@ static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
 
 			if (len & (block_size - 1)) {
 				/* FIXME: This should be handled at MTD partitioning level. */
-				printk(KERN_ERR "onenand_erase: Unaligned address\n");
-				goto erase_exit;
+				printk(KERN_ERR "%s: Unaligned address\n",
+					__func__);
+				return -EIO;
 			}
 		}
+	}
+	return 0;
+}
+
+/**
+ * onenand_erase - [MTD Interface] erase block(s)
+ * @param mtd		MTD device structure
+ * @param instr		erase instruction
+ *
+ * Erase one or more blocks
+ */
+static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr)
+{
+	struct onenand_chip *this = mtd->priv;
+	unsigned int block_size;
+	loff_t addr = instr->addr;
+	loff_t len = instr->len;
+	int ret = 0;
+	struct mtd_erase_region_info *region = NULL;
+	loff_t region_offset = 0;
+
+	DEBUG(MTD_DEBUG_LEVEL3, "%s: start=0x%012llx, len=%llu\n", __func__,
+	      (unsigned long long) instr->addr, (unsigned long long) instr->len);
+
+	/* Do not allow erase past end of device */
+	if (unlikely((len + addr) > mtd->size)) {
+		printk(KERN_ERR "%s: Erase past end of device\n", __func__);
+		return -EINVAL;
+	}
+
+	if (FLEXONENAND(this)) {
+		/* Find the eraseregion of this address */
+		int i = flexonenand_region(mtd, addr);
+
+		region = &mtd->eraseregions[i];
+		block_size = region->erasesize;
+
+		/* Start address within region must align on block boundary.
+		 * Erase region's start offset is always block start address.
+		 */
+		region_offset = region->offset;
+	} else
+		block_size = 1 << this->erase_shift;
+
+	/* Start address must align on block boundary */
+	if (unlikely((addr - region_offset) & (block_size - 1))) {
+		printk(KERN_ERR "%s: Unaligned address\n", __func__);
+		return -EINVAL;
+	}
 
+	/* Length must align on block boundary */
+	if (unlikely(len & (block_size - 1))) {
+		printk(KERN_ERR "%s: Length not block aligned\n", __func__);
+		return -EINVAL;
 	}
 
-	instr->state = MTD_ERASE_DONE;
+	instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN;
 
-erase_exit:
+	/* Grab the lock and see if the device is available */
+	onenand_get_device(mtd, FL_ERASING);
 
-	ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO;
+	if (region || instr->len < MB_ERASE_MIN_BLK_COUNT * block_size) {
+		/* region is set for Flex-OneNAND (no mb erase) */
+		ret = onenand_block_by_block_erase(mtd, instr,
+						   region, block_size);
+	} else {
+		ret = onenand_multiblock_erase(mtd, instr, block_size);
+	}
 
 	/* Deselect and wake up anyone waiting on the device */
 	onenand_release_device(mtd);
 
 	/* Do call back function */
-	if (!ret)
+	if (!ret) {
+		instr->state = MTD_ERASE_DONE;
 		mtd_erase_callback(instr);
+	}
 
 	return ret;
 }
@@ -2272,7 +2506,7 @@ erase_exit:
  */
 static void onenand_sync(struct mtd_info *mtd)
 {
-	DEBUG(MTD_DEBUG_LEVEL3, "onenand_sync: called\n");
+	DEBUG(MTD_DEBUG_LEVEL3, "%s: called\n", __func__);
 
 	/* Grab the lock and see if the device is available */
 	onenand_get_device(mtd, FL_SYNCING);
@@ -2406,7 +2640,8 @@ static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int
 		/* Check lock status */
 		status = this->read_word(this->base + ONENAND_REG_WP_STATUS);
 		if (!(status & wp_status_mask))
-			printk(KERN_ERR "wp status = 0x%x\n", status);
+			printk(KERN_ERR "%s: wp status = 0x%x\n",
+				__func__, status);
 
 		return 0;
 	}
@@ -2435,7 +2670,8 @@ static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int
 		/* Check lock status */
 		status = this->read_word(this->base + ONENAND_REG_WP_STATUS);
 		if (!(status & wp_status_mask))
-			printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status);
+			printk(KERN_ERR "%s: block = %d, wp status = 0x%x\n",
+				__func__, block, status);
 	}
 
 	return 0;
@@ -2502,7 +2738,8 @@ static int onenand_check_lock_status(struct onenand_chip *this)
 		/* Check lock status */
 		status = this->read_word(this->base + ONENAND_REG_WP_STATUS);
 		if (!(status & ONENAND_WP_US)) {
-			printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status);
+			printk(KERN_ERR "%s: block = %d, wp status = 0x%x\n",
+				__func__, block, status);
 			return 0;
 		}
 	}
@@ -2557,6 +2794,208 @@ static void onenand_unlock_all(struct mtd_info *mtd)
 
 #ifdef CONFIG_MTD_ONENAND_OTP
 
+/**
+ * onenand_otp_command - Send OTP specific command to OneNAND device
+ * @param mtd	 MTD device structure
+ * @param cmd	 the command to be sent
+ * @param addr	 offset to read from or write to
+ * @param len	 number of bytes to read or write
+ */
+static int onenand_otp_command(struct mtd_info *mtd, int cmd, loff_t addr,
+				size_t len)
+{
+	struct onenand_chip *this = mtd->priv;
+	int value, block, page;
+
+	/* Address translation */
+	switch (cmd) {
+	case ONENAND_CMD_OTP_ACCESS:
+		block = (int) (addr >> this->erase_shift);
+		page = -1;
+		break;
+
+	default:
+		block = (int) (addr >> this->erase_shift);
+		page = (int) (addr >> this->page_shift);
+
+		if (ONENAND_IS_2PLANE(this)) {
+			/* Make the even block number */
+			block &= ~1;
+			/* Is it the odd plane? */
+			if (addr & this->writesize)
+				block++;
+			page >>= 1;
+		}
+		page &= this->page_mask;
+		break;
+	}
+
+	if (block != -1) {
+		/* Write 'DFS, FBA' of Flash */
+		value = onenand_block_address(this, block);
+		this->write_word(value, this->base +
+				ONENAND_REG_START_ADDRESS1);
+	}
+
+	if (page != -1) {
+		/* Now we use page size operation */
+		int sectors = 4, count = 4;
+		int dataram;
+
+		switch (cmd) {
+		default:
+			if (ONENAND_IS_2PLANE(this) && cmd == ONENAND_CMD_PROG)
+				cmd = ONENAND_CMD_2X_PROG;
+			dataram = ONENAND_CURRENT_BUFFERRAM(this);
+			break;
+		}
+
+		/* Write 'FPA, FSA' of Flash */
+		value = onenand_page_address(page, sectors);
+		this->write_word(value, this->base +
+				ONENAND_REG_START_ADDRESS8);
+
+		/* Write 'BSA, BSC' of DataRAM */
+		value = onenand_buffer_address(dataram, sectors, count);
+		this->write_word(value, this->base + ONENAND_REG_START_BUFFER);
+	}
+
+	/* Interrupt clear */
+	this->write_word(ONENAND_INT_CLEAR, this->base + ONENAND_REG_INTERRUPT);
+
+	/* Write command */
+	this->write_word(cmd, this->base + ONENAND_REG_COMMAND);
+
+	return 0;
+}
+
+/**
+ * onenand_otp_write_oob_nolock - [Internal] OneNAND write out-of-band, specific to OTP
+ * @param mtd		MTD device structure
+ * @param to		offset to write to
+ * @param len		number of bytes to write
+ * @param retlen	pointer to variable to store the number of written bytes
+ * @param buf		the data to write
+ *
+ * OneNAND write out-of-band only for OTP
+ */
+static int onenand_otp_write_oob_nolock(struct mtd_info *mtd, loff_t to,
+				    struct mtd_oob_ops *ops)
+{
+	struct onenand_chip *this = mtd->priv;
+	int column, ret = 0, oobsize;
+	int written = 0;
+	u_char *oobbuf;
+	size_t len = ops->ooblen;
+	const u_char *buf = ops->oobbuf;
+	int block, value, status;
+
+	to += ops->ooboffs;
+
+	/* Initialize retlen, in case of early exit */
+	ops->oobretlen = 0;
+
+	oobsize = mtd->oobsize;
+
+	column = to & (mtd->oobsize - 1);
+
+	oobbuf = this->oob_buf;
+
+	/* Loop until all data write */
+	while (written < len) {
+		int thislen = min_t(int, oobsize, len - written);
+
+		cond_resched();
+
+		block = (int) (to >> this->erase_shift);
+		/*
+		 * Write 'DFS, FBA' of Flash
+		 * Add: F100h DQ=DFS, FBA
+		 */
+
+		value = onenand_block_address(this, block);
+		this->write_word(value, this->base +
+				ONENAND_REG_START_ADDRESS1);
+
+		/*
+		 * Select DataRAM for DDP
+		 * Add: F101h DQ=DBS
+		 */
+
+		value = onenand_bufferram_address(this, block);
+		this->write_word(value, this->base +
+				ONENAND_REG_START_ADDRESS2);
+		ONENAND_SET_NEXT_BUFFERRAM(this);
+
+		/*
+		 * Enter OTP access mode
+		 */
+		this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0);
+		this->wait(mtd, FL_OTPING);
+
+		/* We send data to spare ram with oobsize
+		 * to prevent byte access */
+		memcpy(oobbuf + column, buf, thislen);
+
+		/*
+		 * Write Data into DataRAM
+		 * Add: 8th Word
+		 * in sector0/spare/page0
+		 * DQ=XXFCh
+		 */
+		this->write_bufferram(mtd, ONENAND_SPARERAM,
+					oobbuf, 0, mtd->oobsize);
+
+		onenand_otp_command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize);
+		onenand_update_bufferram(mtd, to, 0);
+		if (ONENAND_IS_2PLANE(this)) {
+			ONENAND_SET_BUFFERRAM1(this);
+			onenand_update_bufferram(mtd, to + this->writesize, 0);
+		}
+
+		ret = this->wait(mtd, FL_WRITING);
+		if (ret) {
+			printk(KERN_ERR "%s: write failed %d\n", __func__, ret);
+			break;
+		}
+
+		/* Exit OTP access mode */
+		this->command(mtd, ONENAND_CMD_RESET, 0, 0);
+		this->wait(mtd, FL_RESETING);
+
+		status = this->read_word(this->base + ONENAND_REG_CTRL_STATUS);
+		status &= 0x60;
+
+		if (status == 0x60) {
+			printk(KERN_DEBUG "\nBLOCK\tSTATUS\n");
+			printk(KERN_DEBUG "1st Block\tLOCKED\n");
+			printk(KERN_DEBUG "OTP Block\tLOCKED\n");
+		} else if (status == 0x20) {
+			printk(KERN_DEBUG "\nBLOCK\tSTATUS\n");
+			printk(KERN_DEBUG "1st Block\tLOCKED\n");
+			printk(KERN_DEBUG "OTP Block\tUN-LOCKED\n");
+		} else if (status == 0x40) {
+			printk(KERN_DEBUG "\nBLOCK\tSTATUS\n");
+			printk(KERN_DEBUG "1st Block\tUN-LOCKED\n");
+			printk(KERN_DEBUG "OTP Block\tLOCKED\n");
+		} else {
+			printk(KERN_DEBUG "Reboot to check\n");
+		}
+
+		written += thislen;
+		if (written == len)
+			break;
+
+		to += mtd->writesize;
+		buf += thislen;
+		column = 0;
+	}
+
+	ops->oobretlen = written;
+
+	return ret;
+}
+
 /* Internal OTP operation */
 typedef int (*otp_op_t)(struct mtd_info *mtd, loff_t form, size_t len,
 		size_t *retlen, u_char *buf);
@@ -2659,11 +3098,11 @@ static int do_otp_lock(struct mtd_info *mtd, loff_t from, size_t len,
 	struct mtd_oob_ops ops;
 	int ret;
 
-	/* Enter OTP access mode */
-	this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0);
-	this->wait(mtd, FL_OTPING);
-
 	if (FLEXONENAND(this)) {
+
+		/* Enter OTP access mode */
+		this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0);
+		this->wait(mtd, FL_OTPING);
 		/*
 		 * For Flex-OneNAND, we write lock mark to 1st word of sector 4 of
 		 * main area of page 49.
@@ -2674,19 +3113,19 @@ static int do_otp_lock(struct mtd_info *mtd, loff_t from, size_t len,
 		ops.oobbuf = NULL;
 		ret = onenand_write_ops_nolock(mtd, mtd->writesize * 49, &ops);
 		*retlen = ops.retlen;
+
+		/* Exit OTP access mode */
+		this->command(mtd, ONENAND_CMD_RESET, 0, 0);
+		this->wait(mtd, FL_RESETING);
 	} else {
 		ops.mode = MTD_OOB_PLACE;
 		ops.ooblen = len;
 		ops.oobbuf = buf;
 		ops.ooboffs = 0;
-		ret = onenand_write_oob_nolock(mtd, from, &ops);
+		ret = onenand_otp_write_oob_nolock(mtd, from, &ops);
 		*retlen = ops.oobretlen;
 	}
 
-	/* Exit OTP access mode */
-	this->command(mtd, ONENAND_CMD_RESET, 0, 0);
-	this->wait(mtd, FL_RESETING);
-
 	return ret;
 }
 
@@ -2717,16 +3156,21 @@ static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len,
 	if (density < ONENAND_DEVICE_DENSITY_512Mb)
 		otp_pages = 20;
 	else
-		otp_pages = 10;
+		otp_pages = 50;
 
 	if (mode == MTD_OTP_FACTORY) {
 		from += mtd->writesize * otp_pages;
-		otp_pages = 64 - otp_pages;
+		otp_pages = ONENAND_PAGES_PER_BLOCK - otp_pages;
 	}
 
 	/* Check User/Factory boundary */
-	if (((mtd->writesize * otp_pages) - (from + len)) < 0)
-		return 0;
+	if (mode == MTD_OTP_USER) {
+		if (mtd->writesize * otp_pages < from + len)
+			return 0;
+	} else {
+		if (mtd->writesize * otp_pages <  len)
+			return 0;
+	}
 
 	onenand_get_device(mtd, FL_OTPING);
 	while (len > 0 && otp_pages > 0) {
@@ -2749,13 +3193,12 @@ static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len,
 			*retlen += sizeof(struct otp_info);
 		} else {
 			size_t tmp_retlen;
-			int size = len;
 
 			ret = action(mtd, from, len, &tmp_retlen, buf);
 
-			buf += size;
-			len -= size;
-			*retlen += size;
+			buf += tmp_retlen;
+			len -= tmp_retlen;
+			*retlen += tmp_retlen;
 
 			if (ret)
 				break;
@@ -2868,21 +3311,11 @@ static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
 	u_char *buf = FLEXONENAND(this) ? this->page_buf : this->oob_buf;
 	size_t retlen;
 	int ret;
+	unsigned int otp_lock_offset = ONENAND_OTP_LOCK_OFFSET;
 
 	memset(buf, 0xff, FLEXONENAND(this) ? this->writesize
 						 : mtd->oobsize);
 	/*
-	 * Note: OTP lock operation
-	 *       OTP block : 0xXXFC
-	 *       1st block : 0xXXF3 (If chip support)
-	 *       Both      : 0xXXF0 (If chip support)
-	 */
-	if (FLEXONENAND(this))
-		buf[FLEXONENAND_OTP_LOCK_OFFSET] = 0xFC;
-	else
-		buf[ONENAND_OTP_LOCK_OFFSET] = 0xFC;
-
-	/*
 	 * Write lock mark to 8th word of sector0 of page0 of the spare0.
 	 * We write 16 bytes spare area instead of 2 bytes.
 	 * For Flex-OneNAND, we write lock mark to 1st word of sector 4 of
@@ -2892,10 +3325,30 @@ static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from,
 	from = 0;
 	len = FLEXONENAND(this) ? mtd->writesize : 16;
 
+	/*
+	 * Note: OTP lock operation
+	 *       OTP block : 0xXXFC			XX 1111 1100
+	 *       1st block : 0xXXF3 (If chip support)	XX 1111 0011
+	 *       Both      : 0xXXF0 (If chip support)	XX 1111 0000
+	 */
+	if (FLEXONENAND(this))
+		otp_lock_offset = FLEXONENAND_OTP_LOCK_OFFSET;
+
+	/* ONENAND_OTP_AREA | ONENAND_OTP_BLOCK0 | ONENAND_OTP_AREA_BLOCK0 */
+	if (otp == 1)
+		buf[otp_lock_offset] = 0xFC;
+	else if (otp == 2)
+		buf[otp_lock_offset] = 0xF3;
+	else if (otp == 3)
+		buf[otp_lock_offset] = 0xF0;
+	else if (otp != 0)
+		printk(KERN_DEBUG "[OneNAND] Invalid option selected for OTP\n");
+
 	ret = onenand_otp_walk(mtd, from, len, &retlen, buf, do_otp_lock, MTD_OTP_USER);
 
 	return ret ? : retlen;
 }
+
 #endif	/* CONFIG_MTD_ONENAND_OTP */
 
 /**
@@ -3172,7 +3625,8 @@ static int flexonenand_check_blocks_erased(struct mtd_info *mtd, int start, int
 				break;
 
 		if (i != mtd->oobsize) {
-			printk(KERN_WARNING "Block %d not erased.\n", block);
+			printk(KERN_WARNING "%s: Block %d not erased.\n",
+				__func__, block);
 			return 1;
 		}
 	}
@@ -3204,8 +3658,8 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die,
 	blksperdie >>= ONENAND_IS_DDP(this) ? 1 : 0;
 
 	if (boundary >= blksperdie) {
-		printk(KERN_ERR "flexonenand_set_boundary: Invalid boundary value. "
-				"Boundary not changed.\n");
+		printk(KERN_ERR "%s: Invalid boundary value. "
+				"Boundary not changed.\n", __func__);
 		return -EINVAL;
 	}
 
@@ -3214,7 +3668,8 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die,
 	new = boundary + (die * this->density_mask);
 	ret = flexonenand_check_blocks_erased(mtd, min(old, new) + 1, max(old, new));
 	if (ret) {
-		printk(KERN_ERR "flexonenand_set_boundary: Please erase blocks before boundary change\n");
+		printk(KERN_ERR "%s: Please erase blocks "
+				"before boundary change\n", __func__);
 		return ret;
 	}
 
@@ -3227,12 +3682,12 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die,
 
 	thisboundary = this->read_word(this->base + ONENAND_DATARAM);
 	if ((thisboundary >> FLEXONENAND_PI_UNLOCK_SHIFT) != 3) {
-		printk(KERN_ERR "flexonenand_set_boundary: boundary locked\n");
+		printk(KERN_ERR "%s: boundary locked\n", __func__);
 		ret = 1;
 		goto out;
 	}
 
-	printk(KERN_INFO "flexonenand_set_boundary: Changing die %d boundary: %d%s\n",
+	printk(KERN_INFO "Changing die %d boundary: %d%s\n",
 			die, boundary, lock ? "(Locked)" : "(Unlocked)");
 
 	addr = die ? this->diesize[0] : 0;
@@ -3243,7 +3698,8 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die,
 	this->command(mtd, ONENAND_CMD_ERASE, addr, 0);
 	ret = this->wait(mtd, FL_ERASING);
 	if (ret) {
-		printk(KERN_ERR "flexonenand_set_boundary: Failed PI erase for Die %d\n", die);
+		printk(KERN_ERR "%s: Failed PI erase for Die %d\n",
+		       __func__, die);
 		goto out;
 	}
 
@@ -3251,7 +3707,8 @@ int flexonenand_set_boundary(struct mtd_info *mtd, int die,
 	this->command(mtd, ONENAND_CMD_PROG, addr, 0);
 	ret = this->wait(mtd, FL_WRITING);
 	if (ret) {
-		printk(KERN_ERR "flexonenand_set_boundary: Failed PI write for Die %d\n", die);
+		printk(KERN_ERR "%s: Failed PI write for Die %d\n",
+			__func__, die);
 		goto out;
 	}
 
@@ -3408,8 +3865,8 @@ static void onenand_resume(struct mtd_info *mtd)
 	if (this->state == FL_PM_SUSPENDED)
 		onenand_release_device(mtd);
 	else
-		printk(KERN_ERR "resume() called for the chip which is not"
-				"in suspended state\n");
+		printk(KERN_ERR "%s: resume() called for the chip which is not "
+				"in suspended state\n", __func__);
 }
 
 /**
@@ -3464,7 +3921,8 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
 	if (!this->page_buf) {
 		this->page_buf = kzalloc(mtd->writesize, GFP_KERNEL);
 		if (!this->page_buf) {
-			printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n");
+			printk(KERN_ERR "%s: Can't allocate page_buf\n",
+				__func__);
 			return -ENOMEM;
 		}
 		this->options |= ONENAND_PAGEBUF_ALLOC;
@@ -3472,7 +3930,8 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
 	if (!this->oob_buf) {
 		this->oob_buf = kzalloc(mtd->oobsize, GFP_KERNEL);
 		if (!this->oob_buf) {
-			printk(KERN_ERR "onenand_scan(): Can't allocate oob_buf\n");
+			printk(KERN_ERR "%s: Can't allocate oob_buf\n",
+				__func__);
 			if (this->options & ONENAND_PAGEBUF_ALLOC) {
 				this->options &= ~ONENAND_PAGEBUF_ALLOC;
 				kfree(this->page_buf);
@@ -3505,8 +3964,8 @@ int onenand_scan(struct mtd_info *mtd, int maxchips)
 		break;
 
 	default:
-		printk(KERN_WARNING "No OOB scheme defined for oobsize %d\n",
-			mtd->oobsize);
+		printk(KERN_WARNING "%s: No OOB scheme defined for oobsize %d\n",
+			__func__, mtd->oobsize);
 		mtd->subpage_sft = 0;
 		/* To prevent kernel oops */
 		this->ecclayout = &onenand_oob_32;