mtd, ubi, ubifs: resync with Linux-3.14

resync ubi subsystem with linux:

commit 455c6fdbd219161bd09b1165f11699d6d73de11c
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Sun Mar 30 20:40:15 2014 -0700

    Linux 3.14

A nice side effect of this, is we introduce UBI Fastmap support
to U-Boot.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Tom Rini <trini@ti.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Sergey Lapin <slapin@ossfans.org>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Joerg Krause <jkrause@posteo.de>

7 files changed, 728 insertions, 257 deletions

diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h
index 25a3d3a..be81d38 100644
--- a/include/linux/mtd/bbm.h
+++ b/include/linux/mtd/bbm.h
@@ -4,13 +4,14 @@
  *  NAND family Bad Block Management (BBM) header file
  *    - Bad Block Table (BBT) implementation
  *
- *  Copyright (c) 2005-2007 Samsung Electronics
+ *  Copyright © 2005 Samsung Electronics
  *  Kyungmin Park <kyungmin.park@samsung.com>
  *
- *  Copyright (c) 2000-2005
+ *  Copyright © 2000-2005
  *  Thomas Gleixner <tglx@linuxtronix.de>
  *
  * SPDX-License-Identifier:	GPL-2.0+
+ *
  */
 #ifndef __LINUX_MTD_BBM_H
 #define __LINUX_MTD_BBM_H
@@ -22,22 +23,21 @@
 
 /**
  * struct nand_bbt_descr - bad block table descriptor
- * @param options	options for this descriptor
- * @param pages		the page(s) where we find the bbt, used with
- *			option BBT_ABSPAGE when bbt is searched,
- *			then we store the found bbts pages here.
- *			Its an array and supports up to 8 chips now
- * @param offs		offset of the pattern in the oob area of the page
- * @param veroffs	offset of the bbt version counter in the oob are of the page
- * @param version	version read from the bbt page during scan
- * @param len		length of the pattern, if 0 no pattern check is performed
- * @param maxblocks	maximum number of blocks to search for a bbt. This number of
- *			blocks is reserved at the end of the device
- *			where the tables are written.
- * @param reserved_block_code	if non-0, this pattern denotes a reserved
- *			(rather than bad) block in the stored bbt
- * @param pattern	pattern to identify bad block table or factory marked
- *			good / bad blocks, can be NULL, if len = 0
+ * @options:	options for this descriptor
+ * @pages:	the page(s) where we find the bbt, used with option BBT_ABSPAGE
+ *		when bbt is searched, then we store the found bbts pages here.
+ *		Its an array and supports up to 8 chips now
+ * @offs:	offset of the pattern in the oob area of the page
+ * @veroffs:	offset of the bbt version counter in the oob are of the page
+ * @version:	version read from the bbt page during scan
+ * @len:	length of the pattern, if 0 no pattern check is performed
+ * @maxblocks:	maximum number of blocks to search for a bbt. This number of
+ *		blocks is reserved at the end of the device where the tables are
+ *		written.
+ * @reserved_block_code: if non-0, this pattern denotes a reserved (rather than
+ *              bad) block in the stored bbt
+ * @pattern:	pattern to identify bad block table or factory marked good /
+ *		bad blocks, can be NULL, if len = 0
  *
  * Descriptor for the bad block table marker and the descriptor for the
  * pattern which identifies good and bad blocks. The assumption is made
@@ -81,10 +81,6 @@ struct nand_bbt_descr {
  * with NAND_BBT_CREATE.
  */
 #define NAND_BBT_CREATE_EMPTY	0x00000400
-/* Search good / bad pattern through all pages of a block */
-#define NAND_BBT_SCANALLPAGES	0x00000800
-/* Scan block empty during good / bad block scan */
-#define NAND_BBT_SCANEMPTY	0x00001000
 /* Write bbt if neccecary */
 #define NAND_BBT_WRITE		0x00002000
 /* Read and write back block contents when writing bbt */
@@ -122,22 +118,27 @@ struct nand_bbt_descr {
 /*
  * Constants for oob configuration
  */
-#define ONENAND_BADBLOCK_POS	0
+#define NAND_SMALL_BADBLOCK_POS		5
+#define NAND_LARGE_BADBLOCK_POS		0
+#define ONENAND_BADBLOCK_POS		0
 
 /*
  * Bad block scanning errors
  */
-#define ONENAND_BBT_READ_ERROR          1
-#define ONENAND_BBT_READ_ECC_ERROR      2
-#define ONENAND_BBT_READ_FATAL_ERROR    4
+#define ONENAND_BBT_READ_ERROR		1
+#define ONENAND_BBT_READ_ECC_ERROR	2
+#define ONENAND_BBT_READ_FATAL_ERROR	4
 
 /**
- * struct bbt_info - [GENERIC] Bad Block Table data structure
- * @param bbt_erase_shift	[INTERN] number of address bits in a bbt entry
- * @param badblockpos		[INTERN] position of the bad block marker in the oob area
- * @param bbt			[INTERN] bad block table pointer
- * @param badblock_pattern	[REPLACEABLE] bad block scan pattern used for initial bad block scan
- * @param priv			[OPTIONAL] pointer to private bbm date
+ * struct bbm_info - [GENERIC] Bad Block Table data structure
+ * @bbt_erase_shift:	[INTERN] number of address bits in a bbt entry
+ * @badblockpos:	[INTERN] position of the bad block marker in the oob area
+ * @options:		options for this descriptor
+ * @bbt:		[INTERN] bad block table pointer
+ * @isbad_bbt:		function to determine if a block is bad
+ * @badblock_pattern:	[REPLACEABLE] bad block scan pattern used for
+ *			initial bad block scan
+ * @priv:		[OPTIONAL] pointer to private bbm date
  */
 struct bbm_info {
 	int bbt_erase_shift;
@@ -146,7 +147,7 @@ struct bbm_info {
 
 	uint8_t *bbt;
 
-	int (*isbad_bbt) (struct mtd_info * mtd, loff_t ofs, int allowbbt);
+	int (*isbad_bbt)(struct mtd_info *mtd, loff_t ofs, int allowbbt);
 
 	/* TODO Add more NAND specific fileds */
 	struct nand_bbt_descr *badblock_pattern;
@@ -155,7 +156,7 @@ struct bbm_info {
 };
 
 /* OneNAND BBT interface */
-extern int onenand_scan_bbt (struct mtd_info *mtd, struct nand_bbt_descr *bd);
-extern int onenand_default_bbt (struct mtd_info *mtd);
+extern int onenand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd);
+extern int onenand_default_bbt(struct mtd_info *mtd);
 
-#endif				/* __LINUX_MTD_BBM_H */
+#endif	/* __LINUX_MTD_BBM_H */
diff --git a/include/linux/mtd/concat.h b/include/linux/mtd/concat.h
index c92b4dd..195a4a5 100644
--- a/include/linux/mtd/concat.h
+++ b/include/linux/mtd/concat.h
@@ -12,7 +12,11 @@
 struct mtd_info *mtd_concat_create(
     struct mtd_info *subdev[],  /* subdevices to concatenate */
     int num_devs,               /* number of subdevices      */
+#ifndef __UBOOT__
     const char *name);          /* name for the new device   */
+#else
+    char *name);          /* name for the new device   */
+#endif
 
 void mtd_concat_destroy(struct mtd_info *mtd);
 
diff --git a/include/linux/mtd/flashchip.h b/include/linux/mtd/flashchip.h
new file mode 100644
index 0000000..7028ee1
--- /dev/null
+++ b/include/linux/mtd/flashchip.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright © 2000      Red Hat UK Limited
+ * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ *
+ */
+
+#ifndef __MTD_FLASHCHIP_H__
+#define __MTD_FLASHCHIP_H__
+
+#define __UBOOT__
+#ifndef __UBOOT__
+/* For spinlocks. sched.h includes spinlock.h from whichever directory it
+ * happens to be in - so we don't have to care whether we're on 2.2, which
+ * has asm/spinlock.h, or 2.4, which has linux/spinlock.h
+ */
+#include <linux/sched.h>
+#include <linux/mutex.h>
+#endif
+
+typedef enum {
+	FL_READY,
+	FL_STATUS,
+	FL_CFI_QUERY,
+	FL_JEDEC_QUERY,
+	FL_ERASING,
+	FL_ERASE_SUSPENDING,
+	FL_ERASE_SUSPENDED,
+	FL_WRITING,
+	FL_WRITING_TO_BUFFER,
+	FL_OTP_WRITE,
+	FL_WRITE_SUSPENDING,
+	FL_WRITE_SUSPENDED,
+	FL_PM_SUSPENDED,
+	FL_SYNCING,
+	FL_UNLOADING,
+	FL_LOCKING,
+	FL_UNLOCKING,
+	FL_POINT,
+	FL_XIP_WHILE_ERASING,
+	FL_XIP_WHILE_WRITING,
+	FL_SHUTDOWN,
+	/* These 2 come from nand_state_t, which has been unified here */
+	FL_READING,
+	FL_CACHEDPRG,
+	/* These 4 come from onenand_state_t, which has been unified here */
+	FL_RESETING,
+	FL_OTPING,
+	FL_PREPARING_ERASE,
+	FL_VERIFYING_ERASE,
+
+	FL_UNKNOWN
+} flstate_t;
+
+
+
+/* NOTE: confusingly, this can be used to refer to more than one chip at a time,
+   if they're interleaved.  This can even refer to individual partitions on
+   the same physical chip when present. */
+
+struct flchip {
+	unsigned long start; /* Offset within the map */
+	//	unsigned long len;
+	/* We omit len for now, because when we group them together
+	   we insist that they're all of the same size, and the chip size
+	   is held in the next level up. If we get more versatile later,
+	   it'll make it a damn sight harder to find which chip we want from
+	   a given offset, and we'll want to add the per-chip length field
+	   back in.
+	*/
+	int ref_point_counter;
+	flstate_t state;
+	flstate_t oldstate;
+
+	unsigned int write_suspended:1;
+	unsigned int erase_suspended:1;
+	unsigned long in_progress_block_addr;
+
+	struct mutex mutex;
+#ifndef __UBOOT__
+	wait_queue_head_t wq; /* Wait on here when we're waiting for the chip
+			     to be ready */
+#endif
+	int word_write_time;
+	int buffer_write_time;
+	int erase_time;
+
+	int word_write_time_max;
+	int buffer_write_time_max;
+	int erase_time_max;
+
+	void *priv;
+};
+
+/* This is used to handle contention on write/erase operations
+   between partitions of the same physical chip. */
+struct flchip_shared {
+	struct mutex lock;
+	struct flchip *writing;
+	struct flchip *erasing;
+};
+
+
+#endif /* __MTD_FLASHCHIP_H__ */
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index a65b681..b7b4757 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -1,48 +1,45 @@
 /*
- * Copyright (C) 1999-2003 David Woodhouse <dwmw2@infradead.org> et al.
+ * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org> et al.
  *
  * Released under GPL
+ *
  */
 
 #ifndef __MTD_MTD_H__
 #define __MTD_MTD_H__
 
+#define __UBOOT__
+#ifndef __UBOOT__
 #include <linux/types.h>
-#include <div64.h>
+#include <linux/uio.h>
+#include <linux/notifier.h>
+#include <linux/device.h>
+
+#include <mtd/mtd-abi.h>
+
+#include <asm/div64.h>
+#else
+#include <linux/compat.h>
 #include <mtd/mtd-abi.h>
 #include <asm/errno.h>
+#include <div64.h>
 
-#define MTD_CHAR_MAJOR 90
-#define MTD_BLOCK_MAJOR 31
 #define MAX_MTD_DEVICES 32
+#endif
 
 #define MTD_ERASE_PENDING	0x01
 #define MTD_ERASING		0x02
 #define MTD_ERASE_SUSPEND	0x04
-#define MTD_ERASE_DONE          0x08
-#define MTD_ERASE_FAILED        0x10
+#define MTD_ERASE_DONE		0x08
+#define MTD_ERASE_FAILED	0x10
 
-#define MTD_FAIL_ADDR_UNKNOWN	-1LL
+#define MTD_FAIL_ADDR_UNKNOWN -1LL
 
 /*
- * Enumeration for NAND/OneNAND flash chip state
+ * If the erase fails, fail_addr might indicate exactly which block failed. If
+ * fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level
+ * or was not specific to any particular block.
  */
-enum {
-	FL_READY,
-	FL_READING,
-	FL_WRITING,
-	FL_ERASING,
-	FL_SYNCING,
-	FL_CACHEDPRG,
-	FL_RESETING,
-	FL_UNLOCKING,
-	FL_LOCKING,
-	FL_PM_SUSPENDED,
-};
-
-/* If the erase fails, fail_addr might indicate exactly which block failed.  If
-   fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level or was not
-   specific to any particular block. */
 struct erase_info {
 	struct mtd_info *mtd;
 	uint64_t addr;
@@ -50,8 +47,8 @@ struct erase_info {
 	uint64_t fail_addr;
 	u_long time;
 	u_long retries;
-	u_int dev;
-	u_int cell;
+	unsigned dev;
+	unsigned cell;
 	void (*callback) (struct erase_info *self);
 	u_long priv;
 	u_char state;
@@ -60,9 +57,9 @@ struct erase_info {
 };
 
 struct mtd_erase_region_info {
-	uint64_t offset;			/* At which this region starts, from the beginning of the MTD */
-	u_int32_t erasesize;		/* For this region */
-	u_int32_t numblocks;		/* Number of blocks of erasesize in this region */
+	uint64_t offset;		/* At which this region starts, from the beginning of the MTD */
+	uint32_t erasesize;		/* For this region */
+	uint32_t numblocks;		/* Number of blocks of erasesize in this region */
 	unsigned long *lockmap;		/* If keeping bitmap of locks */
 };
 
@@ -81,7 +78,7 @@ struct mtd_erase_region_info {
  * @datbuf:	data buffer - if NULL only oob data are read/written
  * @oobbuf:	oob data buffer
  *
- * Note, it is allowed to read more then one OOB area at one go, but not write.
+ * Note, it is allowed to read more than one OOB area at one go, but not write.
  * The interface assumes that the OOB write requests program only one page's
  * OOB area.
  */
@@ -109,26 +106,30 @@ struct mtd_oob_ops {
 #endif
 
 /*
- * ECC layout control structure. Exported to userspace for
- * diagnosis and to allow creation of raw images
+ * Internal ECC layout control structure. For historical reasons, there is a
+ * similar, smaller struct nand_ecclayout_user (in mtd-abi.h) that is retained
+ * for export to user-space via the ECCGETLAYOUT ioctl.
+ * nand_ecclayout should be expandable in the future simply by the above macros.
  */
 struct nand_ecclayout {
-	uint32_t eccbytes;
-	uint32_t eccpos[MTD_MAX_ECCPOS_ENTRIES_LARGE];
-	uint32_t oobavail;
+	__u32 eccbytes;
+	__u32 eccpos[MTD_MAX_ECCPOS_ENTRIES_LARGE];
+	__u32 oobavail;
 	struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE];
 };
 
+struct module;	/* only needed for owner field in mtd_info */
+
 struct mtd_info {
 	u_char type;
-	u_int32_t flags;
-	uint64_t size;	 /* Total size of the MTD */
+	uint32_t flags;
+	uint64_t size;	 // Total size of the MTD
 
 	/* "Major" erase size for the device. Naïve users may take this
 	 * to be the only erase size available, or may use the more detailed
 	 * information below if they desire
 	 */
-	u_int32_t erasesize;
+	uint32_t erasesize;
 	/* Minimal writable flash unit size. In case of NOR flash it is 1 (even
 	 * though individual bits can be cleared), in case of NAND flash it is
 	 * one NAND page (or half, or one-fourths of it), in case of ECC-ed NOR
@@ -136,10 +137,31 @@ struct mtd_info {
 	 * Any driver registering a struct mtd_info must ensure a writesize of
 	 * 1 or larger.
 	 */
-	u_int32_t writesize;
+	uint32_t writesize;
+
+	/*
+	 * Size of the write buffer used by the MTD. MTD devices having a write
+	 * buffer can write multiple writesize chunks at a time. E.g. while
+	 * writing 4 * writesize bytes to a device with 2 * writesize bytes
+	 * buffer the MTD driver can (but doesn't have to) do 2 writesize
+	 * operations, but not 4. Currently, all NANDs have writebufsize
+	 * equivalent to writesize (NAND page size). Some NOR flashes do have
+	 * writebufsize greater than writesize.
+	 */
+	uint32_t writebufsize;
 
-	u_int32_t oobsize;   /* Amount of OOB data per block (e.g. 16) */
-	u_int32_t oobavail;  /* Available OOB bytes per block */
+	uint32_t oobsize;   // Amount of OOB data per block (e.g. 16)
+	uint32_t oobavail;  // Available OOB bytes per block
+
+	/*
+	 * If erasesize is a power of 2 then the shift is stored in
+	 * erasesize_shift otherwise erasesize_shift is zero. Ditto writesize.
+	 */
+	unsigned int erasesize_shift;
+	unsigned int writesize_shift;
+	/* Masks based on erasesize_shift and writesize_shift */
+	unsigned int erasesize_mask;
+	unsigned int writesize_mask;
 
 	/*
 	 * read ops return -EUCLEAN if max number of bitflips corrected on any
@@ -150,13 +172,20 @@ struct mtd_info {
 	 */
 	unsigned int bitflip_threshold;
 
-	/* Kernel-only stuff starts here. */
+	// Kernel-only stuff starts here.
+#ifndef __UBOOT__
 	const char *name;
+#else
+	char *name;
+#endif
 	int index;
 
 	/* ECC layout structure pointer - read only! */
 	struct nand_ecclayout *ecclayout;
 
+	/* the ecc step size. */
+	unsigned int ecc_step_size;
+
 	/* max number of correctible bit errors per ecc step */
 	unsigned int ecc_strength;
 
@@ -171,44 +200,51 @@ struct mtd_info {
 	 * wrappers instead.
 	 */
 	int (*_erase) (struct mtd_info *mtd, struct erase_info *instr);
+#ifndef __UBOOT__
 	int (*_point) (struct mtd_info *mtd, loff_t from, size_t len,
-			size_t *retlen, void **virt, phys_addr_t *phys);
-	void (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
+		       size_t *retlen, void **virt, resource_size_t *phys);
+	int (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
+#endif
+	unsigned long (*_get_unmapped_area) (struct mtd_info *mtd,
+					     unsigned long len,
+					     unsigned long offset,
+					     unsigned long flags);
 	int (*_read) (struct mtd_info *mtd, loff_t from, size_t len,
-		     size_t *retlen, u_char *buf);
+		      size_t *retlen, u_char *buf);
 	int (*_write) (struct mtd_info *mtd, loff_t to, size_t len,
-		      size_t *retlen, const u_char *buf);
-
-	/* In blackbox flight recorder like scenarios we want to make successful
-	   writes in interrupt context. panic_write() is only intended to be
-	   called when its known the kernel is about to panic and we need the
-	   write to succeed. Since the kernel is not going to be running for much
-	   longer, this function can break locks and delay to ensure the write
-	   succeeds (but not sleep). */
-
-	int (*_panic_write) (struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf);
-
+		       size_t *retlen, const u_char *buf);
+	int (*_panic_write) (struct mtd_info *mtd, loff_t to, size_t len,
+			     size_t *retlen, const u_char *buf);
 	int (*_read_oob) (struct mtd_info *mtd, loff_t from,
-			 struct mtd_oob_ops *ops);
+			  struct mtd_oob_ops *ops);
 	int (*_write_oob) (struct mtd_info *mtd, loff_t to,
-			 struct mtd_oob_ops *ops);
+			   struct mtd_oob_ops *ops);
 	int (*_get_fact_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
-				   size_t len);
+				    size_t len);
 	int (*_read_fact_prot_reg) (struct mtd_info *mtd, loff_t from,
-				   size_t len, size_t *retlen, u_char *buf);
+				    size_t len, size_t *retlen, u_char *buf);
 	int (*_get_user_prot_info) (struct mtd_info *mtd, struct otp_info *buf,
-				   size_t len);
+				    size_t len);
 	int (*_read_user_prot_reg) (struct mtd_info *mtd, loff_t from,
-				   size_t len, size_t *retlen, u_char *buf);
-	int (*_write_user_prot_reg) (struct mtd_info *mtd, loff_t to, size_t len,
-				    size_t *retlen, u_char *buf);
+				    size_t len, size_t *retlen, u_char *buf);
+	int (*_write_user_prot_reg) (struct mtd_info *mtd, loff_t to,
+				     size_t len, size_t *retlen, u_char *buf);
 	int (*_lock_user_prot_reg) (struct mtd_info *mtd, loff_t from,
-				   size_t len);
+				    size_t len);
+#ifndef __UBOOT__
+	int (*_writev) (struct mtd_info *mtd, const struct kvec *vecs,
+			unsigned long count, loff_t to, size_t *retlen);
+#endif
 	void (*_sync) (struct mtd_info *mtd);
 	int (*_lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
 	int (*_unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
+	int (*_is_locked) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
 	int (*_block_isbad) (struct mtd_info *mtd, loff_t ofs);
 	int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs);
+#ifndef __UBOOT__
+	int (*_suspend) (struct mtd_info *mtd);
+	void (*_resume) (struct mtd_info *mtd);
+#endif
 	/*
 	 * If the driver is something smart, like UBI, it may need to maintain
 	 * its own reference counting. The below functions are only for driver.
@@ -216,16 +252,12 @@ struct mtd_info {
 	int (*_get_device) (struct mtd_info *mtd);
 	void (*_put_device) (struct mtd_info *mtd);
 
-/* XXX U-BOOT XXX */
-#if 0
-	/* kvec-based read/write methods.
-	   NB: The 'count' parameter is the number of _vectors_, each of
-	   which contains an (ofs, len) tuple.
-	*/
-	int (*writev) (struct mtd_info *mtd, const struct kvec *vecs, unsigned long count, loff_t to, size_t *retlen);
-#endif
-/* XXX U-BOOT XXX */
-#if 0
+#ifndef __UBOOT__
+	/* Backing device capabilities for this device
+	 * - provides mmap capabilities
+	 */
+	struct backing_dev_info *backing_dev_info;
+
 	struct notifier_block reboot_notifier;  /* default mode before reboot */
 #endif
 
@@ -237,10 +269,20 @@ struct mtd_info {
 	void *priv;
 
 	struct module *owner;
+#ifndef __UBOOT__
+	struct device dev;
+#endif
 	int usecount;
 };
 
 int mtd_erase(struct mtd_info *mtd, struct erase_info *instr);
+#ifndef __UBOOT__
+int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
+	      void **virt, resource_size_t *phys);
+int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
+#endif
+unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len,
+				    unsigned long offset, unsigned long flags);
 int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
 	     u_char *buf);
 int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
@@ -273,8 +315,7 @@ int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len,
 			    size_t *retlen, u_char *buf);
 int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len);
 
-/* XXX U-BOOT XXX */
-#if 0
+#ifndef __UBOOT__
 int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
 	       unsigned long count, loff_t to, size_t *retlen);
 #endif
@@ -291,22 +332,59 @@ int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len);
 int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs);
 int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs);
 
+#ifndef __UBOOT__
+static inline int mtd_suspend(struct mtd_info *mtd)
+{
+	return mtd->_suspend ? mtd->_suspend(mtd) : 0;
+}
+
+static inline void mtd_resume(struct mtd_info *mtd)
+{
+	if (mtd->_resume)
+		mtd->_resume(mtd);
+}
+#endif
+
 static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
 {
+	if (mtd->erasesize_shift)
+		return sz >> mtd->erasesize_shift;
 	do_div(sz, mtd->erasesize);
 	return sz;
 }
 
 static inline uint32_t mtd_mod_by_eb(uint64_t sz, struct mtd_info *mtd)
 {
+	if (mtd->erasesize_shift)
+		return sz & mtd->erasesize_mask;
 	return do_div(sz, mtd->erasesize);
 }
 
+static inline uint32_t mtd_div_by_ws(uint64_t sz, struct mtd_info *mtd)
+{
+	if (mtd->writesize_shift)
+		return sz >> mtd->writesize_shift;
+	do_div(sz, mtd->writesize);
+	return sz;
+}
+
+static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd)
+{
+	if (mtd->writesize_shift)
+		return sz & mtd->writesize_mask;
+	return do_div(sz, mtd->writesize);
+}
+
 static inline int mtd_has_oob(const struct mtd_info *mtd)
 {
 	return mtd->_read_oob && mtd->_write_oob;
 }
 
+static inline int mtd_type_is_nand(const struct mtd_info *mtd)
+{
+	return mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH;
+}
+
 static inline int mtd_can_have_bb(const struct mtd_info *mtd)
 {
 	return !!mtd->_block_isbad;
@@ -314,27 +392,36 @@ static inline int mtd_can_have_bb(const struct mtd_info *mtd)
 
 	/* Kernel-side ioctl definitions */
 
-extern int add_mtd_device(struct mtd_info *mtd);
-extern int del_mtd_device (struct mtd_info *mtd);
-
+struct mtd_partition;
+struct mtd_part_parser_data;
+
+extern int mtd_device_parse_register(struct mtd_info *mtd,
+				     const char * const *part_probe_types,
+				     struct mtd_part_parser_data *parser_data,
+				     const struct mtd_partition *defparts,
+				     int defnr_parts);
+#define mtd_device_register(master, parts, nr_parts)	\
+	mtd_device_parse_register(master, NULL, NULL, parts, nr_parts)
+extern int mtd_device_unregister(struct mtd_info *master);
 extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num);
+extern int __get_mtd_device(struct mtd_info *mtd);
+extern void __put_mtd_device(struct mtd_info *mtd);
 extern struct mtd_info *get_mtd_device_nm(const char *name);
-
 extern void put_mtd_device(struct mtd_info *mtd);
-extern void mtd_get_len_incl_bad(struct mtd_info *mtd, uint64_t offset,
-				 const uint64_t length, uint64_t *len_incl_bad,
-				 int *truncated);
-/* XXX U-BOOT XXX */
-#if 0
+
+
+#ifndef __UBOOT__
 struct mtd_notifier {
 	void (*add)(struct mtd_info *mtd);
 	void (*remove)(struct mtd_info *mtd);
 	struct list_head list;
 };
 
+
 extern void register_mtd_user (struct mtd_notifier *new);
 extern int unregister_mtd_user (struct mtd_notifier *old);
 #endif
+void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size);
 
 #ifdef CONFIG_MTD_PARTITIONS
 void mtd_erase_callback(struct erase_info *instr);
@@ -346,6 +433,7 @@ static inline void mtd_erase_callback(struct erase_info *instr)
 }
 #endif
 
+#ifdef __UBOOT__
 /*
  * Debugging macro and defines
  */
@@ -372,7 +460,11 @@ static inline void mtd_erase_callback(struct erase_info *instr)
 #define pr_info(args...)	MTDDEBUG(MTD_DEBUG_LEVEL0, args)
 #define pr_warn(args...)	MTDDEBUG(MTD_DEBUG_LEVEL0, args)
 #define pr_err(args...)		MTDDEBUG(MTD_DEBUG_LEVEL0, args)
-
+#define pr_crit(args...)	MTDDEBUG(MTD_DEBUG_LEVEL0, args)
+#define pr_cont(args...)	MTDDEBUG(MTD_DEBUG_LEVEL0, args)
+#define pr_notice(args...)	MTDDEBUG(MTD_DEBUG_LEVEL0, args)
+#endif
+ 
 static inline int mtd_is_bitflip(int err) {
 	return err == -EUCLEAN;
 }
@@ -385,4 +477,10 @@ static inline int mtd_is_bitflip_or_eccerr(int err) {
 	return mtd_is_bitflip(err) || mtd_is_eccerr(err);
 }
 
+#ifdef __UBOOT__
+/* drivers/mtd/mtdcore.h */
+int add_mtd_device(struct mtd_info *mtd);
+int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
+int del_mtd_partitions(struct mtd_info *);
+#endif
 #endif /* __MTD_MTD_H__ */
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 991bd8e..489c703 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -5,9 +5,7 @@
  *                        Steven J. Hill <sjhill@realitydiluted.com>
  *		          Thomas Gleixner <tglx@linutronix.de>
  *
- * 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
- * published by the Free Software Foundation.
+ * SPDX-License-Identifier:	GPL-2.0+
  *
  * Info:
  *	Contains standard defines and IDs for NAND flash devices
@@ -18,21 +16,32 @@
 #ifndef __LINUX_MTD_NAND_H
 #define __LINUX_MTD_NAND_H
 
+#define __UBOOT__
+#ifndef __UBOOT__
+#include <linux/wait.h>
+#include <linux/spinlock.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/flashchip.h>
+#include <linux/mtd/bbm.h>
+#else
 #include "config.h"
 
 #include "linux/compat.h"
 #include "linux/mtd/mtd.h"
+#include "linux/mtd/flashchip.h"
 #include "linux/mtd/bbm.h"
-
+#endif
 
 struct mtd_info;
 struct nand_flash_dev;
 /* Scan and identify a NAND device */
-extern int nand_scan (struct mtd_info *mtd, int max_chips);
-/* Separate phases of nand_scan(), allowing board driver to intervene
- * and override command or ECC setup according to flash type */
+extern int nand_scan(struct mtd_info *mtd, int max_chips);
+/*
+ * Separate phases of nand_scan(), allowing board driver to intervene
+ * and override command or ECC setup according to flash type.
+ */
 extern int nand_scan_ident(struct mtd_info *mtd, int max_chips,
-			   const struct nand_flash_dev *table);
+			   struct nand_flash_dev *table);
 extern int nand_scan_tail(struct mtd_info *mtd);
 
 /* Free resources held by the NAND device */
@@ -41,12 +50,23 @@ extern void nand_release(struct mtd_info *mtd);
 /* Internal helper for board drivers which need to override command function */
 extern void nand_wait_ready(struct mtd_info *mtd);
 
+#ifndef __UBOOT__
+/* locks all blocks present in the device */
+extern int nand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+
+/* unlocks specified locked blocks */
+extern int nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
+
+/* The maximum number of NAND chips in an array */
+#define NAND_MAX_CHIPS		8
+#endif
+
 /*
  * This constant declares the max. oobsize / page, which
  * is supported now. If you add a chip with bigger oobsize/page
  * adjust this accordingly.
  */
-#define NAND_MAX_OOBSIZE	640
+#define NAND_MAX_OOBSIZE	744
 #define NAND_MAX_PAGESIZE	8192
 
 /*
@@ -76,7 +96,6 @@ extern void nand_wait_ready(struct mtd_info *mtd);
 #define NAND_CMD_READOOB	0x50
 #define NAND_CMD_ERASE1		0x60
 #define NAND_CMD_STATUS		0x70
-#define NAND_CMD_STATUS_MULTI	0x71
 #define NAND_CMD_SEQIN		0x80
 #define NAND_CMD_RNDIN		0x85
 #define NAND_CMD_READID		0x90
@@ -87,10 +106,8 @@ extern void nand_wait_ready(struct mtd_info *mtd);
 #define NAND_CMD_RESET		0xff
 
 #define NAND_CMD_LOCK		0x2a
-#define NAND_CMD_LOCK_TIGHT	0x2c
 #define NAND_CMD_UNLOCK1	0x23
 #define NAND_CMD_UNLOCK2	0x24
-#define NAND_CMD_LOCK_STATUS	0x7a
 
 /* Extended commands for large page devices */
 #define NAND_CMD_READSTART	0x30
@@ -164,21 +181,12 @@ typedef enum {
 /* Chip has copy back function */
 #define NAND_COPYBACK		0x00000010
 /*
- * AND Chip which has 4 banks and a confusing page / block
- * assignment. See Renesas datasheet for further information.
+ * Chip requires ready check on read (for auto-incremented sequential read).
+ * True only for small page devices; large page devices do not support
+ * autoincrement.
  */
-#define NAND_IS_AND		0x00000020
-/*
- * Chip has a array of 4 pages which can be read without
- * additional ready /busy waits.
- */
-#define NAND_4PAGE_ARRAY	0x00000040
-/*
- * Chip requires that BBT is periodically rewritten to prevent
- * bits from adjacent blocks from 'leaking' in altering data.
- * This happens with the Renesas AG-AND chips, possibly others.
- */
-#define BBT_AUTO_REFRESH	0x00000080
+#define NAND_NEED_READRDY	0x00000100
+
 /* Chip does not allow subpage writes */
 #define NAND_NO_SUBPAGE_WRITE	0x00000200
 
@@ -189,16 +197,13 @@ typedef enum {
 #define NAND_ROM		0x00000800
 
 /* Device supports subpage reads */
-#define NAND_SUBPAGE_READ       0x00001000
+#define NAND_SUBPAGE_READ	0x00001000
 
 /* Options valid for Samsung large page devices */
-#define NAND_SAMSUNG_LP_OPTIONS \
-	(NAND_NO_PADDING | NAND_CACHEPRG | NAND_COPYBACK)
+#define NAND_SAMSUNG_LP_OPTIONS NAND_CACHEPRG
 
 /* Macros to identify the above */
-#define NAND_MUST_PAD(chip) (!(chip->options & NAND_NO_PADDING))
 #define NAND_HAS_CACHEPROG(chip) ((chip->options & NAND_CACHEPRG))
-#define NAND_HAS_COPYBACK(chip) ((chip->options & NAND_COPYBACK))
 #define NAND_HAS_SUBPAGE_READ(chip) ((chip->options & NAND_SUBPAGE_READ))
 
 /* Non chip related options */
@@ -211,6 +216,13 @@ typedef enum {
 #define NAND_OWN_BUFFERS	0x00020000
 /* Chip may not exist, so silence any errors in scan */
 #define NAND_SCAN_SILENT_NODEV	0x00040000
+/*
+ * Autodetect nand buswidth with readid/onfi.
+ * This suppose the driver will configure the hardware in 8 bits mode
+ * when calling nand_scan_ident, and update its configuration
+ * before calling nand_scan_tail.
+ */
+#define NAND_BUSWIDTH_AUTO      0x00080000
 
 /* Options set by nand scan */
 /* bbt has already been read */
@@ -221,10 +233,15 @@ typedef enum {
 /* Cell info constants */
 #define NAND_CI_CHIPNR_MSK	0x03
 #define NAND_CI_CELLTYPE_MSK	0x0C
+#define NAND_CI_CELLTYPE_SHIFT	2
 
 /* Keep gcc happy */
 struct nand_chip;
 
+/* ONFI features */
+#define ONFI_FEATURE_16_BIT_BUS		(1 << 0)
+#define ONFI_FEATURE_EXT_PARAM_PAGE	(1 << 7)
+
 /* ONFI timing mode, used in both asynchronous and synchronous mode */
 #define ONFI_TIMING_MODE_0		(1 << 0)
 #define ONFI_TIMING_MODE_1		(1 << 1)
@@ -237,9 +254,15 @@ struct nand_chip;
 /* ONFI feature address */
 #define ONFI_FEATURE_ADDR_TIMING_MODE	0x1
 
+/* Vendor-specific feature address (Micron) */
+#define ONFI_FEATURE_ADDR_READ_RETRY	0x89
+
 /* ONFI subfeature parameters length */
 #define ONFI_SUBFEATURE_PARAM_LEN	4
 
+/* ONFI optional commands SET/GET FEATURES supported? */
+#define ONFI_OPT_CMD_SET_GET_FEATURES	(1 << 2)
+
 struct nand_onfi_params {
 	/* rev info and features block */
 	/* 'O' 'N' 'F' 'I'  */
@@ -247,7 +270,10 @@ struct nand_onfi_params {
 	__le16 revision;
 	__le16 features;
 	__le16 opt_cmd;
-	u8 reserved[22];
+	u8 reserved0[2];
+	__le16 ext_param_page_length; /* since ONFI 2.1 */
+	u8 num_of_param_pages;        /* since ONFI 2.1 */
+	u8 reserved1[17];
 
 	/* manufacturer information block */
 	char manufacturer[12];
@@ -291,19 +317,74 @@ struct nand_onfi_params {
 	__le16 io_pin_capacitance_typ;
 	__le16 input_pin_capacitance_typ;
 	u8 input_pin_capacitance_max;
-	u8 driver_strenght_support;
+	u8 driver_strength_support;
 	__le16 t_int_r;
 	__le16 t_ald;
 	u8 reserved4[7];
 
 	/* vendor */
-	u8 reserved5[90];
+	__le16 vendor_revision;
+	u8 vendor[88];
 
 	__le16 crc;
-} __attribute__((packed));
+} __packed;
 
 #define ONFI_CRC_BASE	0x4F4E
 
+/* Extended ECC information Block Definition (since ONFI 2.1) */
+struct onfi_ext_ecc_info {
+	u8 ecc_bits;
+	u8 codeword_size;
+	__le16 bb_per_lun;
+	__le16 block_endurance;
+	u8 reserved[2];
+} __packed;
+
+#define ONFI_SECTION_TYPE_0	0	/* Unused section. */
+#define ONFI_SECTION_TYPE_1	1	/* for additional sections. */
+#define ONFI_SECTION_TYPE_2	2	/* for ECC information. */
+struct onfi_ext_section {
+	u8 type;
+	u8 length;
+} __packed;
+
+#define ONFI_EXT_SECTION_MAX 8
+
+/* Extended Parameter Page Definition (since ONFI 2.1) */
+struct onfi_ext_param_page {
+	__le16 crc;
+	u8 sig[4];             /* 'E' 'P' 'P' 'S' */
+	u8 reserved0[10];
+	struct onfi_ext_section sections[ONFI_EXT_SECTION_MAX];
+
+	/*
+	 * The actual size of the Extended Parameter Page is in
+	 * @ext_param_page_length of nand_onfi_params{}.
+	 * The following are the variable length sections.
+	 * So we do not add any fields below. Please see the ONFI spec.
+	 */
+} __packed;
+
+struct nand_onfi_vendor_micron {
+	u8 two_plane_read;
+	u8 read_cache;
+	u8 read_unique_id;
+	u8 dq_imped;
+	u8 dq_imped_num_settings;
+	u8 dq_imped_feat_addr;
+	u8 rb_pulldown_strength;
+	u8 rb_pulldown_strength_feat_addr;
+	u8 rb_pulldown_strength_num_settings;
+	u8 otp_mode;
+	u8 otp_page_start;
+	u8 otp_data_prot_addr;
+	u8 otp_num_pages;
+	u8 otp_feat_addr;
+	u8 read_retry_options;
+	u8 reserved[72];
+	u8 param_revision;
+} __packed;
+
 /**
  * struct nand_hw_control - Control structure for hardware controller (e.g ECC generator) shared among independent devices
  * @lock:               protection lock
@@ -313,12 +394,11 @@ struct nand_onfi_params {
  *			when a hw controller is available.
  */
 struct nand_hw_control {
-/* XXX U-BOOT XXX */
-#if 0
-	spinlock_t	 lock;
+	spinlock_t lock;
+	struct nand_chip *active;
+#ifndef __UBOOT__
 	wait_queue_head_t wq;
 #endif
-	struct nand_chip *active;
 };
 
 /**
@@ -344,6 +424,7 @@ struct nand_hw_control {
  *		any single ECC step, 0 if bitflips uncorrectable, -EIO hw error
  * @read_subpage:	function to read parts of the page covered by ECC;
  *			returns same as read_page()
+ * @write_subpage:	function to write parts of the page covered by ECC.
  * @write_page:	function to write a page according to the ECC generator
  *		requirements.
  * @write_oob_raw:	function to write chip OOB data without ECC
@@ -375,6 +456,9 @@ struct nand_ecc_ctrl {
 			uint8_t *buf, int oob_required, int page);
 	int (*read_subpage)(struct mtd_info *mtd, struct nand_chip *chip,
 			uint32_t offs, uint32_t len, uint8_t *buf);
+	int (*write_subpage)(struct mtd_info *mtd, struct nand_chip *chip,
+			uint32_t offset, uint32_t data_len,
+			const uint8_t *data_buf, int oob_required);
 	int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
 			const uint8_t *buf, int oob_required);
 	int (*write_oob_raw)(struct mtd_info *mtd, struct nand_chip *chip,
@@ -396,10 +480,16 @@ struct nand_ecc_ctrl {
  * consecutive order.
  */
 struct nand_buffers {
+#ifndef __UBOOT__
+	uint8_t	*ecccalc;
+	uint8_t	*ecccode;
+	uint8_t *databuf;
+#else
 	uint8_t	ecccalc[ALIGN(NAND_MAX_OOBSIZE, ARCH_DMA_MINALIGN)];
 	uint8_t	ecccode[ALIGN(NAND_MAX_OOBSIZE, ARCH_DMA_MINALIGN)];
 	uint8_t databuf[ALIGN(NAND_MAX_PAGESIZE + NAND_MAX_OOBSIZE,
 			      ARCH_DMA_MINALIGN)];
+#endif
 };
 
 /**
@@ -410,13 +500,13 @@ struct nand_buffers {
  *			flash device.
  * @read_byte:		[REPLACEABLE] read one byte from the chip
  * @read_word:		[REPLACEABLE] read one word from the chip
+ * @write_byte:		[REPLACEABLE] write a single byte to the chip on the
+ *			low 8 I/O lines
  * @write_buf:		[REPLACEABLE] write data from the buffer to the chip
  * @read_buf:		[REPLACEABLE] read data from the chip into the buffer
- * @verify_buf:		[REPLACEABLE] verify buffer contents against the chip
- *			data.
  * @select_chip:	[REPLACEABLE] select chip nr
- * @block_bad:		[REPLACEABLE] check, if the block is bad
- * @block_markbad:	[REPLACEABLE] mark the block bad
+ * @block_bad:		[REPLACEABLE] check if a block is bad, using OOB markers
+ * @block_markbad:	[REPLACEABLE] mark a block bad
  * @cmd_ctrl:		[BOARDSPECIFIC] hardwarespecific function for controlling
  *			ALE/CLE/nCE. Also used to write command and address
  * @init_size:		[BOARDSPECIFIC] hardwarespecific function for setting
@@ -431,6 +521,8 @@ struct nand_buffers {
  *			commands to the chip.
  * @waitfunc:		[REPLACEABLE] hardwarespecific function for wait on
  *			ready.
+ * @setup_read_retry:	[FLASHSPECIFIC] flash (vendor) specific function for
+ *			setting the read-retry mode. Mostly needed for MLC NAND.
  * @ecc:		[BOARDSPECIFIC] ECC control structure
  * @buffers:		buffer structure for read/write
  * @hwcontrol:		platform-specific hardware control structure
@@ -458,7 +550,13 @@ struct nand_buffers {
  * @badblockbits:	[INTERN] minimum number of set bits in a good block's
  *			bad block marker position; i.e., BBM == 11110111b is
  *			not bad when badblockbits == 7
- * @cellinfo:		[INTERN] MLC/multichip data from chip ident
+ * @bits_per_cell:	[INTERN] number of bits per cell. i.e., 1 means SLC.
+ * @ecc_strength_ds:	[INTERN] ECC correctability from the datasheet.
+ *			Minimum amount of bit errors per @ecc_step_ds guaranteed
+ *			to be correctable. If unknown, set to zero.
+ * @ecc_step_ds:	[INTERN] ECC step required by the @ecc_strength_ds,
+ *                      also from the datasheet. It is the recommended ECC step
+ *			size, if known; if unknown, set to zero.
  * @numchips:		[INTERN] number of physical chips
  * @chipsize:		[INTERN] the size of one chip for multichip arrays
  * @pagemask:		[INTERN] page number mask = number of (pages / chip) - 1
@@ -471,9 +569,9 @@ struct nand_buffers {
  *			non 0 if ONFI supported.
  * @onfi_params:	[INTERN] holds the ONFI page parameter when ONFI is
  *			supported, 0 otherwise.
- * @onfi_set_features	[REPLACEABLE] set the features for ONFI nand
- * @onfi_get_features	[REPLACEABLE] get the features for ONFI nand
- * @ecclayout:		[REPLACEABLE] the default ECC placement scheme
+ * @read_retries:	[INTERN] the number of read retry modes supported
+ * @onfi_set_features:	[REPLACEABLE] set the features for ONFI nand
+ * @onfi_get_features:	[REPLACEABLE] get the features for ONFI nand
  * @bbt:		[INTERN] bad block table pointer
  * @bbt_td:		[REPLACEABLE] bad block table descriptor for flash
  *			lookup.
@@ -496,9 +594,14 @@ struct nand_chip {
 
 	uint8_t (*read_byte)(struct mtd_info *mtd);
 	u16 (*read_word)(struct mtd_info *mtd);
+	void (*write_byte)(struct mtd_info *mtd, uint8_t byte);
 	void (*write_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);
 	void (*read_buf)(struct mtd_info *mtd, uint8_t *buf, int len);
-	int (*verify_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);
+#ifdef __UBOOT__
+#if defined(CONFIG_MTD_NAND_VERIFY_WRITE)
+        int (*verify_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);
+#endif
+#endif
 	void (*select_chip)(struct mtd_info *mtd, int chip);
 	int (*block_bad)(struct mtd_info *mtd, loff_t ofs, int getchip);
 	int (*block_markbad)(struct mtd_info *mtd, loff_t ofs);
@@ -514,12 +617,13 @@ struct nand_chip {
 	int (*errstat)(struct mtd_info *mtd, struct nand_chip *this, int state,
 			int status, int page);
 	int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
-			const uint8_t *buf, int oob_required, int page,
-			int cached, int raw);
+			uint32_t offset, int data_len, const uint8_t *buf,
+			int oob_required, int page, int cached, int raw);
 	int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip,
 			int feature_addr, uint8_t *subfeature_para);
 	int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,
 			int feature_addr, uint8_t *subfeature_para);
+	int (*setup_read_retry)(struct mtd_info *mtd, int retry_mode);
 
 	int chip_delay;
 	unsigned int options;
@@ -535,20 +639,26 @@ struct nand_chip {
 	int pagebuf;
 	unsigned int pagebuf_bitflips;
 	int subpagesize;
-	uint8_t cellinfo;
+	uint8_t bits_per_cell;
+	uint16_t ecc_strength_ds;
+	uint16_t ecc_step_ds;
 	int badblockpos;
 	int badblockbits;
 
 	int onfi_version;
 #ifdef CONFIG_SYS_NAND_ONFI_DETECTION
-	struct nand_onfi_params onfi_params;
+	struct nand_onfi_params	onfi_params;
 #endif
 
-	int state;
+	int read_retries;
+
+	flstate_t state;
 
 	uint8_t *oob_poi;
 	struct nand_hw_control *controller;
+#ifdef __UBOOT__
 	struct nand_ecclayout *ecclayout;
+#endif
 
 	struct nand_ecc_ctrl ecc;
 	struct nand_buffers *buffers;
@@ -577,26 +687,83 @@ struct nand_chip {
 #define NAND_MFR_AMD		0x01
 #define NAND_MFR_MACRONIX	0xc2
 #define NAND_MFR_EON		0x92
+#define NAND_MFR_SANDISK	0x45
+#define NAND_MFR_INTEL		0x89
+
+/* The maximum expected count of bytes in the NAND ID sequence */
+#define NAND_MAX_ID_LEN 8
+
+/*
+ * A helper for defining older NAND chips where the second ID byte fully
+ * defined the chip, including the geometry (chip size, eraseblock size, page
+ * size). All these chips have 512 bytes NAND page size.
+ */
+#define LEGACY_ID_NAND(nm, devid, chipsz, erasesz, opts)          \
+	{ .name = (nm), {{ .dev_id = (devid) }}, .pagesize = 512, \
+	  .chipsize = (chipsz), .erasesize = (erasesz), .options = (opts) }
+
+/*
+ * A helper for defining newer chips which report their page size and
+ * eraseblock size via the extended ID bytes.
+ *
+ * The real difference between LEGACY_ID_NAND and EXTENDED_ID_NAND is that with
+ * EXTENDED_ID_NAND, manufacturers overloaded the same device ID so that the
+ * device ID now only represented a particular total chip size (and voltage,
+ * buswidth), and the page size, eraseblock size, and OOB size could vary while
+ * using the same device ID.
+ */
+#define EXTENDED_ID_NAND(nm, devid, chipsz, opts)                      \
+	{ .name = (nm), {{ .dev_id = (devid) }}, .chipsize = (chipsz), \
+	  .options = (opts) }
+
+#define NAND_ECC_INFO(_strength, _step)	\
+			{ .strength_ds = (_strength), .step_ds = (_step) }
+#define NAND_ECC_STRENGTH(type)		((type)->ecc.strength_ds)
+#define NAND_ECC_STEP(type)		((type)->ecc.step_ds)
 
 /**
  * struct nand_flash_dev - NAND Flash Device ID Structure
- * @name:	Identify the device type
- * @id:		device ID code
- * @pagesize:	Pagesize in bytes. Either 256 or 512 or 0
- *		If the pagesize is 0, then the real pagesize
- *		and the eraseize are determined from the
- *		extended id bytes in the chip
- * @erasesize:	Size of an erase block in the flash device.
- * @chipsize:	Total chipsize in Mega Bytes
- * @options:	Bitfield to store chip relevant options
+ * @name: a human-readable name of the NAND chip
+ * @dev_id: the device ID (the second byte of the full chip ID array)
+ * @mfr_id: manufecturer ID part of the full chip ID array (refers the same
+ *          memory address as @id[0])
+ * @dev_id: device ID part of the full chip ID array (refers the same memory
+ *          address as @id[1])
+ * @id: full device ID array
+ * @pagesize: size of the NAND page in bytes; if 0, then the real page size (as
+ *            well as the eraseblock size) is determined from the extended NAND
+ *            chip ID array)
+ * @chipsize: total chip size in MiB
+ * @erasesize: eraseblock size in bytes (determined from the extended ID if 0)
+ * @options: stores various chip bit options
+ * @id_len: The valid length of the @id.
+ * @oobsize: OOB size
+ * @ecc.strength_ds: The ECC correctability from the datasheet, same as the
+ *                   @ecc_strength_ds in nand_chip{}.
+ * @ecc.step_ds: The ECC step required by the @ecc.strength_ds, same as the
+ *               @ecc_step_ds in nand_chip{}, also from the datasheet.
+ *               For example, the "4bit ECC for each 512Byte" can be set with
+ *               NAND_ECC_INFO(4, 512).
  */
 struct nand_flash_dev {
 	char *name;
-	int id;
-	unsigned long pagesize;
-	unsigned long chipsize;
-	unsigned long erasesize;
-	unsigned long options;
+	union {
+		struct {
+			uint8_t mfr_id;
+			uint8_t dev_id;
+		};
+		uint8_t id[NAND_MAX_ID_LEN];
+	};
+	unsigned int pagesize;
+	unsigned int chipsize;
+	unsigned int erasesize;
+	unsigned int options;
+	uint16_t id_len;
+	uint16_t oobsize;
+	struct {
+		uint16_t strength_ds;
+		uint16_t step_ds;
+	} ecc;
 };
 
 /**
@@ -609,23 +776,25 @@ struct nand_manufacturers {
 	char *name;
 };
 
-extern const struct nand_flash_dev nand_flash_ids[];
-extern const struct nand_manufacturers nand_manuf_ids[];
+extern struct nand_flash_dev nand_flash_ids[];
+extern struct nand_manufacturers nand_manuf_ids[];
 
 extern int nand_scan_bbt(struct mtd_info *mtd, struct nand_bbt_descr *bd);
-extern int nand_update_bbt(struct mtd_info *mtd, loff_t offs);
 extern int nand_default_bbt(struct mtd_info *mtd);
+extern int nand_markbad_bbt(struct mtd_info *mtd, loff_t offs);
 extern int nand_isbad_bbt(struct mtd_info *mtd, loff_t offs, int allowbbt);
 extern int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr,
 			   int allowbbt);
 extern int nand_do_read(struct mtd_info *mtd, loff_t from, size_t len,
 			size_t *retlen, uint8_t *buf);
 
+#ifdef __UBOOT__
 /*
 * Constants for oob configuration
 */
 #define NAND_SMALL_BADBLOCK_POS		5
 #define NAND_LARGE_BADBLOCK_POS		0
+#endif
 
 /**
  * struct platform_nand_chip - chip level device structure
@@ -656,20 +825,29 @@ struct platform_device;
 
 /**
  * struct platform_nand_ctrl - controller level device structure
+ * @probe:		platform specific function to probe/setup hardware
+ * @remove:		platform specific function to remove/teardown hardware
  * @hwcontrol:		platform specific hardware control structure
  * @dev_ready:		platform specific function to read ready/busy pin
  * @select_chip:	platform specific chip select function
  * @cmd_ctrl:		platform specific function for controlling
  *			ALE/CLE/nCE. Also used to write command and address
+ * @write_buf:		platform specific function for write buffer
+ * @read_buf:		platform specific function for read buffer
+ * @read_byte:		platform specific function to read one byte from chip
  * @priv:		private data to transport driver specific settings
  *
  * All fields are optional and depend on the hardware driver requirements
  */
 struct platform_nand_ctrl {
+	int (*probe)(struct platform_device *pdev);
+	void (*remove)(struct platform_device *pdev);
 	void (*hwcontrol)(struct mtd_info *mtd, int cmd);
 	int (*dev_ready)(struct mtd_info *mtd);
 	void (*select_chip)(struct mtd_info *mtd, int chip);
 	void (*cmd_ctrl)(struct mtd_info *mtd, int dat, unsigned int ctrl);
+	void (*write_buf)(struct mtd_info *mtd, const uint8_t *buf, int len);
+	void (*read_buf)(struct mtd_info *mtd, uint8_t *buf, int len);
 	unsigned char (*read_byte)(struct mtd_info *mtd);
 	void *priv;
 };
@@ -693,16 +871,14 @@ struct platform_nand_chip *get_platform_nandchip(struct mtd_info *mtd)
 	return chip->priv;
 }
 
-/* Standard NAND functions from nand_base.c */
-void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len);
-void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len);
-void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len);
-void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len);
-uint8_t nand_read_byte(struct mtd_info *mtd);
+#ifdef CONFIG_SYS_NAND_ONFI_DETECTION
+/* return the supported features. */
+static inline int onfi_feature(struct nand_chip *chip)
+{
+	return chip->onfi_version ? le16_to_cpu(chip->onfi_params.features) : 0;
+}
 
 /* return the supported asynchronous timing mode. */
-
-#ifdef CONFIG_SYS_NAND_ONFI_DETECTION
 static inline int onfi_get_async_timing_mode(struct nand_chip *chip)
 {
 	if (!chip->onfi_version)
@@ -719,6 +895,16 @@ static inline int onfi_get_sync_timing_mode(struct nand_chip *chip)
 }
 #endif
 
+/*
+ * Check if it is a SLC nand.
+ * The !nand_is_slc() can be used to check the MLC/TLC nand chips.
+ * We do not distinguish the MLC and TLC now.
+ */
+static inline bool nand_is_slc(struct nand_chip *chip)
+{
+	return chip->bits_per_cell == 1;
+}
+
 /**
  * Check if the opcode's address should be sent only on the lower 8 bits
  * @command: opcode to check
@@ -737,5 +923,12 @@ static inline int nand_opcode_8bits(unsigned int command)
 	return 0;
 }
 
-
+#ifdef __UBOOT__
+/* Standard NAND functions from nand_base.c */
+void nand_write_buf(struct mtd_info *mtd, const uint8_t *buf, int len);
+void nand_write_buf16(struct mtd_info *mtd, const uint8_t *buf, int len);
+void nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len);
+void nand_read_buf16(struct mtd_info *mtd, uint8_t *buf, int len);
+uint8_t nand_read_byte(struct mtd_info *mtd);
+#endif
 #endif /* __LINUX_MTD_NAND_H */
diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h
index d1d9a96..ce0e8db 100644
--- a/include/linux/mtd/partitions.h
+++ b/include/linux/mtd/partitions.h
@@ -1,11 +1,9 @@
 /*
  * MTD partitioning layer definitions
  *
- * (C) 2000 Nicolas Pitre <nico@cam.org>
+ * (C) 2000 Nicolas Pitre <nico@fluxnic.net>
  *
  * This code is GPL
- *
- * $Id: partitions.h,v 1.17 2005/11/07 11:14:55 gleixner Exp $
  */
 
 #ifndef MTD_PARTITIONS_H
@@ -18,7 +16,7 @@
  * Partition definition structure:
  *
  * An array of struct partition is passed along with a MTD object to
- * add_mtd_partitions() to create them.
+ * mtd_device_register() to create them.
  *
  * For each partition, these fields are available:
  * name: string that will be used to label the partition's MTD device.
@@ -26,7 +24,9 @@
  * 	will extend to the end of the master MTD device.
  * offset: absolute starting position within the master MTD device; if
  * 	defined as MTDPART_OFS_APPEND, the partition will start where the
- * 	previous one ended; if MTDPART_OFS_NXTBLK, at the next erase block.
+ *	previous one ended; if MTDPART_OFS_NXTBLK, at the next erase block;
+ *	if MTDPART_OFS_RETAIN, consume as much as possible, leaving size
+ *	after the end of partition.
  * mask_flags: contains flags that have to be masked (removed) from the
  * 	master MTD flag set for the corresponding MTD partition.
  * 	For example, to force a read-only partition, simply adding
@@ -37,23 +37,34 @@
  */
 
 struct mtd_partition {
-	char *name;			/* identifier string */
+	const char *name;		/* identifier string */
 	uint64_t size;			/* partition size */
 	uint64_t offset;		/* offset within the master MTD space */
-	u_int32_t mask_flags;		/* master MTD flags to mask out for this partition */
-	struct nand_ecclayout *ecclayout;	/* out of band layout for this partition (NAND only)*/
-	struct mtd_info **mtdp;		/* pointer to store the MTD object */
+	uint32_t mask_flags;		/* master MTD flags to mask out for this partition */
+	struct nand_ecclayout *ecclayout;	/* out of band layout for this partition (NAND only) */
 };
 
+#define MTDPART_OFS_RETAIN	(-3)
 #define MTDPART_OFS_NXTBLK	(-2)
 #define MTDPART_OFS_APPEND	(-1)
 #define MTDPART_SIZ_FULL	(0)
 
 
-int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
-int del_mtd_partitions(struct mtd_info *);
+struct mtd_info;
+struct device_node;
+
+#ifndef __UBOOT__
+/**
+ * struct mtd_part_parser_data - used to pass data to MTD partition parsers.
+ * @origin: for RedBoot, start address of MTD device
+ * @of_node: for OF parsers, device node containing partitioning information
+ */
+struct mtd_part_parser_data {
+	unsigned long origin;
+	struct device_node *of_node;
+};
+
 
-#if 0
 /*
  * Functions dealing with the various ways of partitioning the space
  */
@@ -62,23 +73,18 @@ struct mtd_part_parser {
 	struct list_head list;
 	struct module *owner;
 	const char *name;
-	int (*parse_fn)(struct mtd_info *, struct mtd_partition **, unsigned long);
+	int (*parse_fn)(struct mtd_info *, struct mtd_partition **,
+			struct mtd_part_parser_data *);
 };
 
-extern int register_mtd_parser(struct mtd_part_parser *parser);
-extern int deregister_mtd_parser(struct mtd_part_parser *parser);
-extern int parse_mtd_partitions(struct mtd_info *master, const char **types,
-				struct mtd_partition **pparts, unsigned long origin);
-
-#define put_partition_parser(p) do { module_put((p)->owner); } while(0)
-
-struct device;
-struct device_node;
-
-int __devinit of_mtd_parse_partitions(struct device *dev,
-				      struct mtd_info *mtd,
-				      struct device_node *node,
-				      struct mtd_partition **pparts);
+extern void register_mtd_parser(struct mtd_part_parser *parser);
+extern void deregister_mtd_parser(struct mtd_part_parser *parser);
 #endif
 
+int mtd_is_partition(const struct mtd_info *mtd);
+int mtd_add_partition(struct mtd_info *master, const char *name,
+		      long long offset, long long length);
+int mtd_del_partition(struct mtd_info *master, int partno);
+uint64_t mtd_get_device_size(const struct mtd_info *mtd);
+
 #endif
diff --git a/include/linux/mtd/ubi.h b/include/linux/mtd/ubi.h
index 4755770..d9e58ae 100644
--- a/include/linux/mtd/ubi.h
+++ b/include/linux/mtd/ubi.h
@@ -9,9 +9,15 @@
 #ifndef __LINUX_UBI_H__
 #define __LINUX_UBI_H__
 
-/* #include <asm/ioctl.h> */
 #include <linux/types.h>
+#define __UBOOT__
+#ifndef __UBOOT__
+#include <linux/ioctl.h>
 #include <mtd/ubi-user.h>
+#endif
+
+/* All voumes/LEBs */
+#define UBI_ALL -1
 
 /*
  * enum ubi_open_mode - UBI volume open mode constants.
@@ -33,13 +39,13 @@ enum {
  * @size: how many physical eraseblocks are reserved for this volume
  * @used_bytes: how many bytes of data this volume contains
  * @used_ebs: how many physical eraseblocks of this volume actually contain any
- * data
+ *            data
  * @vol_type: volume type (%UBI_DYNAMIC_VOLUME or %UBI_STATIC_VOLUME)
  * @corrupted: non-zero if the volume is corrupted (static volumes only)
  * @upd_marker: non-zero if the volume has update marker set
  * @alignment: volume alignment
  * @usable_leb_size: how many bytes are available in logical eraseblocks of
- * this volume
+ *                   this volume
  * @name_len: volume name length
  * @name: volume name
  * @cdev: UBI volume character device major and minor numbers
@@ -75,7 +81,7 @@ enum {
  * physical eraseblock size and on how much bytes UBI headers consume. But
  * because of the volume alignment (@alignment), the usable size of logical
  * eraseblocks if a volume may be less. The following equation is true:
- * 	@usable_leb_size = LEB size - (LEB size mod @alignment),
+ *	@usable_leb_size = LEB size - (LEB size mod @alignment),
  * where LEB size is the logical eraseblock size defined by the UBI device.
  *
  * The alignment is multiple to the minimal flash input/output unit size or %1
@@ -104,20 +110,79 @@ struct ubi_volume_info {
  * struct ubi_device_info - UBI device description data structure.
  * @ubi_num: ubi device number
  * @leb_size: logical eraseblock size on this UBI device
+ * @leb_start: starting offset of logical eraseblocks within physical
+ *             eraseblocks
  * @min_io_size: minimal I/O unit size
+ * @max_write_size: maximum amount of bytes the underlying flash can write at a
+ *                  time (MTD write buffer size)
  * @ro_mode: if this device is in read-only mode
  * @cdev: UBI character device major and minor numbers
  *
  * Note, @leb_size is the logical eraseblock size offered by the UBI device.
  * Volumes of this UBI device may have smaller logical eraseblock size if their
  * alignment is not equivalent to %1.
+ *
+ * The @max_write_size field describes flash write maximum write unit. For
+ * example, NOR flash allows for changing individual bytes, so @min_io_size is
+ * %1. However, it does not mean than NOR flash has to write data byte-by-byte.
+ * Instead, CFI NOR flashes have a write-buffer of, e.g., 64 bytes, and when
+ * writing large chunks of data, they write 64-bytes at a time. Obviously, this
+ * improves write throughput.
+ *
+ * Also, the MTD device may have N interleaved (striped) flash chips
+ * underneath, in which case @min_io_size can be physical min. I/O size of
+ * single flash chip, while @max_write_size can be N * @min_io_size.
+ *
+ * The @max_write_size field is always greater or equivalent to @min_io_size.
+ * E.g., some NOR flashes may have (@min_io_size = 1, @max_write_size = 64). In
+ * contrast, NAND flashes usually have @min_io_size = @max_write_size = NAND
+ * page size.
  */
 struct ubi_device_info {
 	int ubi_num;
 	int leb_size;
+	int leb_start;
 	int min_io_size;
+	int max_write_size;
 	int ro_mode;
+#ifndef __UBOOT__
 	dev_t cdev;
+#endif
+};
+
+/*
+ * Volume notification types.
+ * @UBI_VOLUME_ADDED: a volume has been added (an UBI device was attached or a
+ *                    volume was created)
+ * @UBI_VOLUME_REMOVED: a volume has been removed (an UBI device was detached
+ *			or a volume was removed)
+ * @UBI_VOLUME_RESIZED: a volume has been re-sized
+ * @UBI_VOLUME_RENAMED: a volume has been re-named
+ * @UBI_VOLUME_UPDATED: data has been written to a volume
+ *
+ * These constants define which type of event has happened when a volume
+ * notification function is invoked.
+ */
+enum {
+	UBI_VOLUME_ADDED,
+	UBI_VOLUME_REMOVED,
+	UBI_VOLUME_RESIZED,
+	UBI_VOLUME_RENAMED,
+	UBI_VOLUME_UPDATED,
+};
+
+/*
+ * struct ubi_notification - UBI notification description structure.
+ * @di: UBI device description object
+ * @vi: UBI volume description object
+ *
+ * UBI notifiers are called with a pointer to an object of this type. The
+ * object describes the notification. Namely, it provides a description of the
+ * UBI device and UBI volume the notification informs about.
+ */
+struct ubi_notification {
+	struct ubi_device_info di;
+	struct ubi_volume_info vi;
 };
 
 /* UBI descriptor given to users when they open UBI volumes */
@@ -129,17 +194,37 @@ void ubi_get_volume_info(struct ubi_volume_desc *desc,
 struct ubi_volume_desc *ubi_open_volume(int ubi_num, int vol_id, int mode);
 struct ubi_volume_desc *ubi_open_volume_nm(int ubi_num, const char *name,
 					   int mode);
+struct ubi_volume_desc *ubi_open_volume_path(const char *pathname, int mode);
+
+#ifndef __UBOOT__
+typedef	int (*notifier_fn_t)(void *nb,
+			unsigned long action, void *data);
+
+struct notifier_block {
+	notifier_fn_t notifier_call;
+	struct notifier_block *next;
+	void *next;
+	int priority;
+};
+
+int ubi_register_volume_notifier(struct notifier_block *nb,
+				 int ignore_existing);
+int ubi_unregister_volume_notifier(struct notifier_block *nb);
+#endif
+
 void ubi_close_volume(struct ubi_volume_desc *desc);
 int ubi_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
 		 int len, int check);
 int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
-		  int offset, int len, int dtype);
+		  int offset, int len);
 int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
-		   int len, int dtype);
+		   int len);
 int ubi_leb_erase(struct ubi_volume_desc *desc, int lnum);
 int ubi_leb_unmap(struct ubi_volume_desc *desc, int lnum);
-int ubi_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype);
+int ubi_leb_map(struct ubi_volume_desc *desc, int lnum);
 int ubi_is_mapped(struct ubi_volume_desc *desc, int lnum);
+int ubi_sync(int ubi_num);
+int ubi_flush(int ubi_num, int vol_id, int lnum);
 
 /*
  * This function is the same as the 'ubi_leb_read()' function, but it does not
@@ -150,25 +235,4 @@ static inline int ubi_read(struct ubi_volume_desc *desc, int lnum, char *buf,
 {
 	return ubi_leb_read(desc, lnum, buf, offset, len, 0);
 }
-
-/*
- * This function is the same as the 'ubi_leb_write()' functions, but it does
- * not have the data type argument.
- */
-static inline int ubi_write(struct ubi_volume_desc *desc, int lnum,
-			    const void *buf, int offset, int len)
-{
-	return ubi_leb_write(desc, lnum, buf, offset, len, UBI_UNKNOWN);
-}
-
-/*
- * This function is the same as the 'ubi_leb_change()' functions, but it does
- * not have the data type argument.
- */
-static inline int ubi_change(struct ubi_volume_desc *desc, int lnum,
-				    const void *buf, int len)
-{
-	return ubi_leb_change(desc, lnum, buf, len, UBI_UNKNOWN);
-}
-
 #endif /* !__LINUX_UBI_H__ */