diff --git a/src/support/libnandapi/Makefile b/src/support/libnandapi/Makefile
new file mode 100644
index 0000000..da3b8ff
--- /dev/null
+++ b/src/support/libnandapi/Makefile
@@ -0,0 +1,23 @@
+
+TARGET := libnandapi.so
+
+INCLUDE :=
+
+CFLAGS += -fPIC -O2 $(INCLUDE) -D_LARGEFILE64_SOURCE
+SHARE := -shared
+
+SOURCE := $(wildcard src/*.c)
+OBJS := $(patsubst %.c,%.o,$(SOURCE))
+
+.PHONY : all clean install $(TARGET)
+
+all : $(TARGET)
+
+$(TARGET) : $(OBJS)
+	$(CC) $(CFLAGS) $(SHARE) -o $@ $(OBJS)
+
+clean :
+	rm -fr src/*.o *.so
+
+install : $(TARGET)
+	install -d $(DESTDIR)$(PREFIX)/lib/
diff --git a/src/support/libnandapi/inc/common.h b/src/support/libnandapi/inc/common.h
new file mode 100644
index 0000000..817d5e7
--- /dev/null
+++ b/src/support/libnandapi/inc/common.h
@@ -0,0 +1,221 @@
+/*
+ * Copyright (c) Artem Bityutskiy, 2007, 2008
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __MTD_UTILS_COMMON_H__
+#define __MTD_UTILS_COMMON_H__
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <features.h>
+#include <inttypes.h>
+
+#ifndef PROGRAM_NAME
+# error "You must define PROGRAM_NAME before including this header"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef MIN	/* some C lib headers define this for us */
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#endif
+#ifndef MAX
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
+#define min(a, b) MIN(a, b) /* glue for linux kernel source */
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+
+#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
+#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
+
+#define min_t(t,x,y) ({ \
+	typeof((x)) _x = (x); \
+	typeof((y)) _y = (y); \
+	(_x < _y) ? _x : _y; \
+})
+
+#define max_t(t,x,y) ({ \
+	typeof((x)) _x = (x); \
+	typeof((y)) _y = (y); \
+	(_x > _y) ? _x : _y; \
+})
+
+#ifndef O_CLOEXEC
+#define O_CLOEXEC 0
+#endif
+
+/* define a print format specifier for off_t */
+#ifdef __USE_FILE_OFFSET64
+#define PRIxoff_t PRIx64
+#define PRIdoff_t PRId64
+#else
+#define PRIxoff_t "l"PRIx32
+#define PRIdoff_t "l"PRId32
+#endif
+
+/* Verbose messages */
+#define bareverbose(verbose, fmt, ...) do {                        \
+	if (verbose)                                               \
+		printf(fmt, ##__VA_ARGS__);                        \
+} while(0)
+#define verbose(verbose, fmt, ...) \
+	bareverbose(verbose, "%s: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__)
+
+/* Normal messages */
+#define normsg_cont(fmt, ...) do {                                 \
+	printf("%s: " fmt, PROGRAM_NAME, ##__VA_ARGS__);           \
+} while(0)
+#define normsg(fmt, ...) do {                                      \
+	normsg_cont(fmt "\n", ##__VA_ARGS__);                      \
+} while(0)
+
+/* Error messages */
+#define errmsg(fmt, ...)  ({                                                \
+	fprintf(stderr, "%s: error!: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__); \
+	-1;                                                                 \
+})
+#define errmsg_die(fmt, ...) do {                                           \
+	exit(errmsg(fmt, ##__VA_ARGS__));                                   \
+} while(0)
+
+/* System error messages */
+#define sys_errmsg(fmt, ...)  ({                                            \
+	int _err = errno;                                                   \
+	errmsg(fmt, ##__VA_ARGS__);                                         \
+	fprintf(stderr, "%*serror %d (%s)\n", (int)sizeof(PROGRAM_NAME) + 1,\
+		"", _err, strerror(_err));                                  \
+	-1;                                                                 \
+})
+#define sys_errmsg_die(fmt, ...) do {                                       \
+	exit(sys_errmsg(fmt, ##__VA_ARGS__));                               \
+} while(0)
+
+/* Warnings */
+#define warnmsg(fmt, ...) do {                                                \
+	fprintf(stderr, "%s: warning!: " fmt "\n", PROGRAM_NAME, ##__VA_ARGS__); \
+} while(0)
+
+/* uClibc versions before 0.9.34 and musl don't have rpmatch() */
+#if defined(__UCLIBC__) && \
+		(__UCLIBC_MAJOR__ == 0 && \
+		(__UCLIBC_MINOR__ < 9 || \
+		(__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ < 34))) || \
+	!defined(__GLIBC__)
+#undef rpmatch
+#define rpmatch __rpmatch
+static inline int __rpmatch(const char *resp)
+{
+    return (resp[0] == 'y' || resp[0] == 'Y') ? 1 :
+	(resp[0] == 'n' || resp[0] == 'N') ? 0 : -1;
+}
+#endif
+
+/**
+ * prompt the user for confirmation
+ */
+static inline bool prompt(const char *msg, bool def)
+{
+	char *line = NULL;
+	size_t len;
+	bool ret = def;
+
+	do {
+		normsg_cont("%s (%c/%c) ", msg, def ? 'Y' : 'y', def ? 'n' : 'N');
+		fflush(stdout);
+
+		while (getline(&line, &len, stdin) == -1) {
+			printf("failed to read prompt; assuming '%s'\n",
+				def ? "yes" : "no");
+			break;
+		}
+
+		if (strcmp("\n", line) != 0) {
+			switch (rpmatch(line)) {
+			case 0: ret = false; break;
+			case 1: ret = true; break;
+			case -1:
+				puts("unknown response; please try again");
+				continue;
+			}
+		}
+		break;
+	} while (1);
+
+	free(line);
+
+	return ret;
+}
+
+static inline int is_power_of_2(unsigned long long n)
+{
+	return (n != 0 && ((n & (n - 1)) == 0));
+}
+
+/**
+ * simple_strtoX - convert a hex/dec/oct string into a number
+ * @snum: buffer to convert
+ * @error: set to 1 when buffer isn't fully consumed
+ *
+ * These functions are similar to the standard strtoX() functions, but they are
+ * a little bit easier to use if you want to convert full string of digits into
+ * the binary form. The typical usage:
+ *
+ * int error = 0;
+ * unsigned long num;
+ *
+ * num = simple_strtoul(str, &error);
+ * if (error || ... if needed, your check that num is not out of range ...)
+ * 	error_happened();
+ */
+#define simple_strtoX(func, type) \
+static inline type simple_##func(const char *snum, int *error) \
+{ \
+	char *endptr; \
+	type ret = func(snum, &endptr, 0); \
+ \
+	if (error && (!*snum || *endptr)) { \
+		errmsg("%s: unable to parse the number '%s'", #func, snum); \
+		*error = 1; \
+	} \
+ \
+	return ret; \
+}
+simple_strtoX(strtol, long int)
+simple_strtoX(strtoll, long long int)
+simple_strtoX(strtoul, unsigned long int)
+simple_strtoX(strtoull, unsigned long long int)
+
+/* Simple version-printing for utils */
+#define common_print_version() \
+do { \
+	printf("%s %s\n", PROGRAM_NAME, VERSION); \
+} while (0)
+
+#include "xalloc.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !__MTD_UTILS_COMMON_H__ */
diff --git a/src/support/libnandapi/inc/libmtd.h b/src/support/libnandapi/inc/libmtd.h
new file mode 100644
index 0000000..a78c8cb
--- /dev/null
+++ b/src/support/libnandapi/inc/libmtd.h
@@ -0,0 +1,352 @@
+/*
+ * Copyright (C) 2008, 2009 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Author: Artem Bityutskiy
+ *
+ * MTD library.
+ */
+
+#ifndef __LIBMTD_H__
+#define __LIBMTD_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Maximum MTD device name length */
+#define MTD_NAME_MAX 127
+/* Maximum MTD device type string length */
+#define MTD_TYPE_MAX 64
+
+/* MTD library descriptor */
+typedef void * libmtd_t;
+
+/* Forward decls */
+struct region_info_user;
+
+/**
+ * @mtd_dev_cnt: count of MTD devices in system
+ * @lowest_mtd_num: lowest MTD device number in system
+ * @highest_mtd_num: highest MTD device number in system
+ * @sysfs_supported: non-zero if sysfs is supported by MTD
+ */
+struct mtd_info
+{
+	int mtd_dev_cnt;
+	int lowest_mtd_num;
+	int highest_mtd_num;
+	unsigned int sysfs_supported:1;
+};
+
+/**
+ * struct mtd_dev_info - information about an MTD device.
+ * @mtd_num: MTD device number
+ * @major: major number of corresponding character device
+ * @minor: minor number of corresponding character device
+ * @type: flash type (constants like %MTD_NANDFLASH defined in mtd-abi.h)
+ * @type_str: static R/O flash type string
+ * @name: device name
+ * @size: device size in bytes
+ * @eb_cnt: count of eraseblocks
+ * @eb_size: eraseblock size
+ * @min_io_size: minimum input/output unit size
+ * @subpage_size: sub-page size
+ * @oob_size: OOB size (zero if the device does not have OOB area)
+ * @region_cnt: count of additional erase regions
+ * @writable: zero if the device is read-only
+ * @bb_allowed: non-zero if the MTD device may have bad eraseblocks
+ */
+struct mtd_dev_info
+{
+	int mtd_num;
+	int major;
+	int minor;
+	int type;
+	const char type_str[MTD_TYPE_MAX + 1];
+	const char name[MTD_NAME_MAX + 1];
+	long long size;
+	int eb_cnt;
+	int eb_size;
+	int min_io_size;
+	int subpage_size;
+	int oob_size;
+	int region_cnt;
+	unsigned int writable:1;
+	unsigned int bb_allowed:1;
+};
+
+/**
+ * libmtd_open - open MTD library.
+ *
+ * This function initializes and opens the MTD library and returns MTD library
+ * descriptor in case of success and %NULL in case of failure. In case of
+ * failure, errno contains zero if MTD is not present in the system, or
+ * contains the error code if a real error happened.
+ */
+libmtd_t libmtd_open(void);
+
+/**
+ * libmtd_close - close MTD library.
+ * @desc: MTD library descriptor
+ */
+void libmtd_close(libmtd_t desc);
+
+/**
+ * mtd_dev_present - check whether a MTD device is present.
+ * @desc: MTD library descriptor
+ * @mtd_num: MTD device number to check
+ *
+ * This function returns %1 if MTD device is present and %0 if not.
+ */
+int mtd_dev_present(libmtd_t desc, int mtd_num);
+
+/**
+ * mtd_get_info - get general MTD information.
+ * @desc: MTD library descriptor
+ * @info: the MTD device information is returned here
+ *
+ * This function fills the passed @info object with general MTD information and
+ * returns %0 in case of success and %-1 in case of failure. If MTD subsystem is
+ * not present in the system, errno is set to @ENODEV.
+ */
+int mtd_get_info(libmtd_t desc, struct mtd_info *info);
+
+/**
+ * mtd_get_dev_info - get information about an MTD device.
+ * @desc: MTD library descriptor
+ * @node: name of the MTD device node
+ * @mtd: the MTD device information is returned here
+ *
+ * This function gets information about MTD device defined by the @node device
+ * node file and saves this information in the @mtd object. Returns %0 in case
+ * of success and %-1 in case of failure. If MTD subsystem is not present in the
+ * system, or the MTD device does not exist, errno is set to @ENODEV.
+ */
+int mtd_get_dev_info(libmtd_t desc, const char *node, struct mtd_dev_info *mtd);
+
+/**
+ * mtd_get_dev_info1 - get information about an MTD device.
+ * @desc: MTD library descriptor
+ * @mtd_num: MTD device number to fetch information about
+ * @mtd: the MTD device information is returned here
+ *
+ * This function is identical to 'mtd_get_dev_info()' except that it accepts
+ * MTD device number, not MTD character device.
+ */
+int mtd_get_dev_info1(libmtd_t desc, int mtd_num, struct mtd_dev_info *mtd);
+
+/**
+ * mtd_lock - lock eraseblocks.
+ * @desc: MTD library descriptor
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to lock
+ *
+ * This function locks eraseblock @eb. Returns %0 in case of success and %-1
+ * in case of failure.
+ */
+int mtd_lock(const struct mtd_dev_info *mtd, int fd, int eb);
+
+/**
+ * mtd_unlock - unlock eraseblocks.
+ * @desc: MTD library descriptor
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to lock
+ *
+ * This function unlocks eraseblock @eb. Returns %0 in case of success and %-1
+ * in case of failure.
+ */
+int mtd_unlock(const struct mtd_dev_info *mtd, int fd, int eb);
+
+/**
+ * mtd_erase - erase an eraseblock.
+ * @desc: MTD library descriptor
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to erase
+ *
+ * This function erases eraseblock @eb of MTD device described by @fd. Returns
+ * %0 in case of success and %-1 in case of failure.
+ */
+int mtd_erase(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb);
+
+/**
+ * mtd_regioninfo - get information about an erase region.
+ * @fd: MTD device node file descriptor
+ * @regidx: index of region to look up
+ * @reginfo: the region information is returned here
+ *
+ * This function gets information about an erase region defined by the
+ * @regidx index and saves this information in the @reginfo object.
+ * Returns %0 in case of success and %-1 in case of failure. If the
+ * @regidx is not valid or unavailable, errno is set to @ENODEV.
+ */
+int mtd_regioninfo(int fd, int regidx, struct region_info_user *reginfo);
+
+/**
+ * mtd_is_locked - see if the specified eraseblock is locked.
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to check
+ *
+ * This function checks to see if eraseblock @eb of MTD device described
+ * by @fd is locked. Returns %0 if it is unlocked, %1 if it is locked, and
+ * %-1 in case of failure. If the ioctl is not supported (support was added in
+ * Linux kernel 2.6.36) or this particular device does not support it, errno is
+ * set to @ENOTSUPP.
+ */
+int mtd_is_locked(const struct mtd_dev_info *mtd, int fd, int eb);
+
+/**
+ * mtd_torture - torture an eraseblock.
+ * @desc: MTD library descriptor
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to torture
+ *
+ * This function tortures eraseblock @eb. Returns %0 in case of success and %-1
+ * in case of failure.
+ */
+int mtd_torture(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb);
+
+/**
+ * mtd_is_bad - check if eraseblock is bad.
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to check
+ *
+ * This function checks if eraseblock @eb is bad. Returns %0 if not, %1 if yes,
+ * and %-1 in case of failure.
+ */
+int mtd_is_bad(const struct mtd_dev_info *mtd, int fd, int eb);
+
+/**
+ * mtd_mark_bad - mark an eraseblock as bad.
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to mark as bad
+ *
+ * This function marks eraseblock @eb as bad. Returns %0 in case of success and
+ * %-1 in case of failure.
+ */
+int mtd_mark_bad(const struct mtd_dev_info *mtd, int fd, int eb);
+
+/**
+ * mtd_read - read data from an MTD device.
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to read from
+ * @offs: offset withing the eraseblock to read from
+ * @buf: buffer to read data to
+ * @len: how many bytes to read
+ *
+ * This function reads @len bytes of data from eraseblock @eb and offset @offs
+ * of the MTD device defined by @mtd and stores the read data at buffer @buf.
+ * Returns %0 in case of success and %-1 in case of failure.
+ */
+int mtd_read(const struct mtd_dev_info *mtd, int fd, int eb, int offs,
+	     void *buf, int len);
+
+/**
+ * mtd_write - write data to an MTD device.
+ * @desc: MTD library descriptor
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to write to
+ * @offs: offset withing the eraseblock to write to
+ * @data: data buffer to write
+ * @len: how many data bytes to write
+ * @oob: OOB buffer to write
+ * @ooblen: how many OOB bytes to write
+ * @mode: write mode (e.g., %MTD_OOB_PLACE, %MTD_OOB_RAW)
+ *
+ * This function writes @len bytes of data to eraseblock @eb and offset @offs
+ * of the MTD device defined by @mtd. Returns %0 in case of success and %-1 in
+ * case of failure.
+ *
+ * Can only write to a single page at a time if writing to OOB.
+ */
+int mtd_write(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb,
+	      int offs, void *data, int len, void *oob, int ooblen,
+	      uint8_t mode);
+
+/**
+ * mtd_read_oob - read out-of-band area.
+ * @desc: MTD library descriptor
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @start: page-aligned start address
+ * @length: number of OOB bytes to read
+ * @data: read buffer
+ *
+ * This function reads @length OOB bytes starting from address @start on
+ * MTD device described by @fd. The address is specified as page byte offset
+ * from the beginning of the MTD device. This function returns %0 in case of
+ * success and %-1 in case of failure.
+ */
+int mtd_read_oob(libmtd_t desc, const struct mtd_dev_info *mtd, int fd,
+		 uint64_t start, uint64_t length, void *data);
+
+/**
+ * mtd_write_oob - write out-of-band area.
+ * @desc: MTD library descriptor
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @start: page-aligned start address
+ * @length: number of OOB bytes to write
+ * @data: write buffer
+ *
+ * This function writes @length OOB bytes starting from address @start on
+ * MTD device described by @fd. The address is specified as page byte offset
+ * from the beginning of the MTD device. Returns %0 in case of success and %-1
+ * in case of failure.
+ */
+int mtd_write_oob(libmtd_t desc, const struct mtd_dev_info *mtd, int fd,
+		  uint64_t start, uint64_t length, void *data);
+
+/**
+ * mtd_write_img - write a file to MTD device.
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: eraseblock to write to
+ * @offs: offset withing the eraseblock to write to
+ * @img_name: the file to write
+ *
+ * This function writes an image @img_name the MTD device defined by @mtd. @eb
+ * and @offs are the starting eraseblock and offset on the MTD device. Returns
+ * %0 in case of success and %-1 in case of failure.
+ */
+int mtd_write_img(const struct mtd_dev_info *mtd, int fd, int eb, int offs,
+		  const char *img_name);
+
+/**
+ * mtd_probe_node - test MTD node.
+ * @desc: MTD library descriptor
+ * @node: the node to test
+ *
+ * This function tests whether @node is an MTD device node and returns %1 if it
+ * is, and %-1 if it is not (errno is %ENODEV in this case) or if an error
+ * occurred.
+ */
+int mtd_probe_node(libmtd_t desc, const char *node);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __LIBMTD_H__ */
diff --git a/src/support/libnandapi/inc/libmtd_int.h b/src/support/libnandapi/inc/libmtd_int.h
new file mode 100644
index 0000000..7913e67
--- /dev/null
+++ b/src/support/libnandapi/inc/libmtd_int.h
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ * Copyright (C) 2009 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Author: Artem Bityutskiy
+ *
+ * MTD library.
+ */
+
+#ifndef __LIBMTD_INT_H__
+#define __LIBMTD_INT_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define PROGRAM_NAME "libmtd"
+
+#define SYSFS_MTD        "class/mtd"
+#define MTD_NAME_PATT    "mtd%d"
+#define MTD_DEV          "dev"
+#define MTD_NAME         "name"
+#define MTD_TYPE         "type"
+#define MTD_EB_SIZE      "erasesize"
+#define MTD_SIZE         "size"
+#define MTD_MIN_IO_SIZE  "writesize"
+#define MTD_SUBPAGE_SIZE "subpagesize"
+#define MTD_OOB_SIZE     "oobsize"
+#define MTD_REGION_CNT   "numeraseregions"
+#define MTD_FLAGS        "flags"
+
+#define OFFS64_IOCTLS_UNKNOWN       0
+#define OFFS64_IOCTLS_NOT_SUPPORTED 1
+#define OFFS64_IOCTLS_SUPPORTED     2
+
+/**
+ * libmtd - MTD library description data structure.
+ * @sysfs_mtd: MTD directory in sysfs
+ * @mtd: MTD device sysfs directory pattern
+ * @mtd_dev: MTD device major/minor numbers file pattern
+ * @mtd_name: MTD device name file pattern
+ * @mtd_type: MTD device type file pattern
+ * @mtd_eb_size: MTD device eraseblock size file pattern
+ * @mtd_size: MTD device size file pattern
+ * @mtd_min_io_size: minimum I/O unit size file pattern
+ * @mtd_subpage_size: sub-page size file pattern
+ * @mtd_oob_size: MTD device OOB size file pattern
+ * @mtd_region_cnt: count of additional erase regions file pattern
+ * @mtd_flags: MTD device flags file pattern
+ * @sysfs_supported: non-zero if sysfs is supported by MTD
+ * @offs64_ioctls: %OFFS64_IOCTLS_SUPPORTED if 64-bit %MEMERASE64,
+ *                 %MEMREADOOB64, %MEMWRITEOOB64 MTD device ioctls are
+ *                 supported, %OFFS64_IOCTLS_NOT_SUPPORTED if not, and
+ *                 %OFFS64_IOCTLS_UNKNOWN if it is not known yet;
+ *
+ *  Note, we cannot find out whether 64-bit ioctls are supported by MTD when we
+ *  are initializing the library, because this requires an MTD device node.
+ *  Indeed, we have to actually call the ioctl and check for %ENOTTY to find
+ *  out whether it is supported or not.
+ *
+ *  Thus, we leave %offs64_ioctls uninitialized in 'libmtd_open()', and
+ *  initialize it later, when corresponding libmtd function is used, and when
+ *  we actually have a device node and can invoke an ioctl command on it.
+ */
+struct libmtd
+{
+	char *sysfs_mtd;
+	char *mtd;
+	char *mtd_dev;
+	char *mtd_name;
+	char *mtd_type;
+	char *mtd_eb_size;
+	char *mtd_size;
+	char *mtd_min_io_size;
+	char *mtd_subpage_size;
+	char *mtd_oob_size;
+	char *mtd_region_cnt;
+	char *mtd_flags;
+	unsigned int sysfs_supported:1;
+	unsigned int offs64_ioctls:2;
+};
+
+int legacy_libmtd_open(void);
+int legacy_dev_present(int mtd_num);
+int legacy_mtd_get_info(struct mtd_info *info);
+int legacy_get_dev_info(const char *node, struct mtd_dev_info *mtd);
+int legacy_get_dev_info1(int dev_num, struct mtd_dev_info *mtd);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !__LIBMTD_INT_H__ */
diff --git a/src/support/libnandapi/inc/mtk_device_wrap.h b/src/support/libnandapi/inc/mtk_device_wrap.h
new file mode 100644
index 0000000..cd4da87
--- /dev/null
+++ b/src/support/libnandapi/inc/mtk_device_wrap.h
@@ -0,0 +1,30 @@
+
+#ifndef __MTK_DEVICE_WRAP_H__
+#define __MTK_DEVICE_WRAP_H__
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#define BOOTDEV_TYPE_NAND 1
+#define BOOTDEV_TYPE_EMMC 2
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int mtk_device_wrap_m_open(const char *pathname, int flags, mode_t mode);
+int mtk_device_wrap_open(const char *pathname, int flags);
+off_t mtk_device_wrap_seek(int fd, off_t offset, int whence);
+off64_t mtk_device_wrap_seek64(int fd, off64_t offset, int whence);
+ssize_t mtk_device_wrap_read(int fd, void *buf, size_t count);
+ssize_t mtk_device_wrap_write(int fd, void *buf, size_t count);
+ssize_t mtk_device_wrap_write_force(int fd, void *buf, size_t count);
+int mtk_device_wrap_close(int fd);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MTK_DEVICE_WRAP_H__ */
diff --git a/src/support/libnandapi/inc/nand_api.h b/src/support/libnandapi/inc/nand_api.h
new file mode 100644
index 0000000..1d365ab
--- /dev/null
+++ b/src/support/libnandapi/inc/nand_api.h
@@ -0,0 +1,25 @@
+#ifndef __NAND_API_H__
+#define __NAND_API_H__
+
+#define PROGRAM_NAME "libnandapi"
+
+int nand_open(const char *pathname, int flags);
+
+off_t nand_seek(int fd, off_t offset, int whence);
+
+off64_t nand_seek64(int fd, off64_t offset, int whence);
+
+ssize_t nand_read(int fd, void *buf, size_t count);
+
+ssize_t nand_write(int fd, void *buf, size_t count);
+
+ssize_t nand_write_force(int fd, void *buf, size_t count);
+
+int nand_close(int fd);
+
+off_t nand_query_offset(int fd);
+
+size_t nand_query_blk_size(int fd);
+
+#endif
+
diff --git a/src/support/libnandapi/inc/xalloc.h b/src/support/libnandapi/inc/xalloc.h
new file mode 100644
index 0000000..532b80f
--- /dev/null
+++ b/src/support/libnandapi/inc/xalloc.h
@@ -0,0 +1,106 @@
+/*
+ * memory wrappers
+ *
+ * Copyright (c) Artem Bityutskiy, 2007, 2008
+ * Copyright 2001, 2002 Red Hat, Inc.
+ *           2001 David A. Schleef <ds@lineo.com>
+ *           2002 Axis Communications AB
+ *           2001, 2002 Erik Andersen <andersen@codepoet.org>
+ *           2004 University of Szeged, Hungary
+ *           2006 KaiGai Kohei <kaigai@ak.jp.nec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __MTD_UTILS_XALLOC_H__
+#define __MTD_UTILS_XALLOC_H__
+
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * Mark these functions as unused so that gcc does not emit warnings
+ * when people include this header but don't use every function.
+ */
+
+__attribute__((unused))
+static void *xmalloc(size_t size)
+{
+	void *ptr = malloc(size);
+
+	if (ptr == NULL && size != 0)
+		sys_errmsg_die("out of memory");
+	return ptr;
+}
+
+__attribute__((unused))
+static void *xcalloc(size_t nmemb, size_t size)
+{
+	void *ptr = calloc(nmemb, size);
+
+	if (ptr == NULL && nmemb != 0 && size != 0)
+		sys_errmsg_die("out of memory");
+	return ptr;
+}
+
+__attribute__((unused))
+static void *xzalloc(size_t size)
+{
+	return xcalloc(1, size);
+}
+
+__attribute__((unused))
+static void *xrealloc(void *ptr, size_t size)
+{
+	ptr = realloc(ptr, size);
+	if (ptr == NULL && size != 0)
+		sys_errmsg_die("out of memory");
+	return ptr;
+}
+
+__attribute__((unused))
+static char *xstrdup(const char *s)
+{
+	char *t;
+
+	if (s == NULL)
+		return NULL;
+	t = strdup(s);
+	if (t == NULL)
+		sys_errmsg_die("out of memory");
+	return t;
+}
+
+#ifdef _GNU_SOURCE
+
+__attribute__((unused))
+static int xasprintf(char **strp, const char *fmt, ...)
+{
+	int cnt;
+	va_list ap;
+
+	va_start(ap, fmt);
+	cnt = vasprintf(strp, fmt, ap);
+	va_end(ap);
+
+	if (cnt == -1)
+		sys_errmsg_die("out of memory");
+
+	return cnt;
+}
+#endif
+
+#endif /* !__MTD_UTILS_XALLOC_H__ */
diff --git a/src/support/libnandapi/src/libmtd.c b/src/support/libnandapi/src/libmtd.c
new file mode 100644
index 0000000..516e4e7
--- /dev/null
+++ b/src/support/libnandapi/src/libmtd.c
@@ -0,0 +1,1423 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ * Copyright (C) 2009 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Author: Artem Bityutskiy
+ *
+ * MTD library.
+ */
+
+#include <limits.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/sysmacros.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <inttypes.h>
+
+#include <mtd/mtd-user.h>
+#include "../inc/libmtd.h"
+
+#include "../inc/libmtd_int.h"
+#include "../inc/common.h"
+
+/**
+ * mkpath - compose full path from 2 given components.
+ * @path: the first component
+ * @name: the second component
+ *
+ * This function returns the resulting path in case of success and %NULL in
+ * case of failure.
+ */
+static char *mkpath(const char *path, const char *name)
+{
+	char *n;
+	size_t len1 = strlen(path);
+	size_t len2 = strlen(name);
+
+	n = xmalloc(len1 + len2 + 2);
+
+	memcpy(n, path, len1);
+	if (n[len1 - 1] != '/')
+		n[len1++] = '/';
+
+	memcpy(n + len1, name, len2 + 1);
+	return n;
+}
+
+/**
+ * read_data - read data from a file.
+ * @file: the file to read from
+ * @buf: the buffer to read to
+ * @buf_len: buffer length
+ *
+ * This function returns number of read bytes in case of success and %-1 in
+ * case of failure. Note, if the file contains more then @buf_len bytes of
+ * date, this function fails with %EINVAL error code.
+ */
+static int read_data(const char *file, void *buf, int buf_len)
+{
+	int fd, rd, tmp, tmp1;
+
+	fd = open(file, O_RDONLY | O_CLOEXEC);
+	if (fd == -1)
+		return -1;
+
+	rd = read(fd, buf, buf_len);
+	if (rd == -1) {
+		sys_errmsg("cannot read \"%s\"", file);
+		goto out_error;
+	}
+
+	if (rd == buf_len) {
+		errmsg("contents of \"%s\" is too long", file);
+		errno = EINVAL;
+		goto out_error;
+	}
+
+	((char *)buf)[rd] = '\0';
+
+	/* Make sure all data is read */
+	tmp1 = read(fd, &tmp, 1);
+	if (tmp1 == 1) {
+		sys_errmsg("cannot read \"%s\"", file);
+		goto out_error;
+	}
+	if (tmp1) {
+		errmsg("file \"%s\" contains too much data (> %d bytes)",
+		       file, buf_len);
+		errno = EINVAL;
+		goto out_error;
+	}
+
+	if (close(fd)) {
+		sys_errmsg("close failed on \"%s\"", file);
+		return -1;
+	}
+
+	return rd;
+
+out_error:
+	close(fd);
+	return -1;
+}
+
+/**
+ * read_major - read major and minor numbers from a file.
+ * @file: name of the file to read from
+ * @major: major number is returned here
+ * @minor: minor number is returned here
+ *
+ * This function returns % in case of success, and %-1 in case of failure.
+ */
+static int read_major(const char *file, int *major, int *minor)
+{
+	int ret;
+	char buf[50];
+
+	ret = read_data(file, buf, 50);
+	if (ret < 0)
+		return ret;
+
+	ret = sscanf(buf, "%d:%d\n", major, minor);
+	if (ret != 2) {
+		errno = EINVAL;
+		return errmsg("\"%s\" does not have major:minor format", file);
+	}
+
+	if (*major < 0 || *minor < 0) {
+		errno = EINVAL;
+		return errmsg("bad major:minor %d:%d in \"%s\"",
+			      *major, *minor, file);
+	}
+
+	return 0;
+}
+
+/**
+ * dev_get_major - get major and minor numbers of an MTD device.
+ * @lib: libmtd descriptor
+ * @mtd_num: MTD device number
+ * @major: major number is returned here
+ * @minor: minor number is returned here
+ *
+ * This function returns zero in case of success and %-1 in case of failure.
+ */
+static int dev_get_major(struct libmtd *lib, int mtd_num, int *major, int *minor)
+{
+	char file[strlen(lib->mtd_dev) + 50];
+
+	sprintf(file, lib->mtd_dev, mtd_num);
+	return read_major(file, major, minor);
+}
+
+/**
+ * dev_read_data - read data from an MTD device's sysfs file.
+ * @patt: file pattern to read from
+ * @mtd_num: MTD device number
+ * @buf: buffer to read to
+ * @buf_len: buffer length
+ *
+ * This function returns number of read bytes in case of success and %-1 in
+ * case of failure.
+ */
+static int dev_read_data(const char *patt, int mtd_num, void *buf, int buf_len)
+{
+	char file[strlen(patt) + 100];
+
+	sprintf(file, patt, mtd_num);
+	return read_data(file, buf, buf_len);
+}
+
+/**
+ * read_hex_ll - read a hex 'long long' value from a file.
+ * @file: the file to read from
+ * @value: the result is stored here
+ *
+ * This function reads file @file and interprets its contents as hexadecimal
+ * 'long long' integer. If this is not true, it fails with %EINVAL error code.
+ * Returns %0 in case of success and %-1 in case of failure.
+ */
+static int read_hex_ll(const char *file, long long *value)
+{
+	int fd, rd;
+	char buf[50];
+
+	fd = open(file, O_RDONLY | O_CLOEXEC);
+	if (fd == -1)
+		return -1;
+
+	rd = read(fd, buf, sizeof(buf));
+	if (rd == -1) {
+		sys_errmsg("cannot read \"%s\"", file);
+		goto out_error;
+	}
+	if (rd == sizeof(buf)) {
+		errmsg("contents of \"%s\" is too long", file);
+		errno = EINVAL;
+		goto out_error;
+	}
+	buf[rd] = '\0';
+
+	if (sscanf(buf, "%llx\n", value) != 1) {
+		errmsg("cannot read integer from \"%s\"\n", file);
+		errno = EINVAL;
+		goto out_error;
+	}
+
+	if (*value < 0) {
+		errmsg("negative value %lld in \"%s\"", *value, file);
+		errno = EINVAL;
+		goto out_error;
+	}
+
+	if (close(fd))
+		return sys_errmsg("close failed on \"%s\"", file);
+
+	return 0;
+
+out_error:
+	close(fd);
+	return -1;
+}
+
+/**
+ * read_pos_ll - read a positive 'long long' value from a file.
+ * @file: the file to read from
+ * @value: the result is stored here
+ *
+ * This function reads file @file and interprets its contents as a positive
+ * 'long long' integer. If this is not true, it fails with %EINVAL error code.
+ * Returns %0 in case of success and %-1 in case of failure.
+ */
+static int read_pos_ll(const char *file, long long *value)
+{
+	int fd, rd;
+	char buf[50];
+
+	fd = open(file, O_RDONLY | O_CLOEXEC);
+	if (fd == -1)
+		return -1;
+
+	rd = read(fd, buf, 50);
+	if (rd == -1) {
+		sys_errmsg("cannot read \"%s\"", file);
+		goto out_error;
+	}
+	if (rd == 50) {
+		errmsg("contents of \"%s\" is too long", file);
+		errno = EINVAL;
+		goto out_error;
+	}
+
+	if (sscanf(buf, "%lld\n", value) != 1) {
+		errmsg("cannot read integer from \"%s\"\n", file);
+		errno = EINVAL;
+		goto out_error;
+	}
+
+	if (*value < 0) {
+		errmsg("negative value %lld in \"%s\"", *value, file);
+		errno = EINVAL;
+		goto out_error;
+	}
+
+	if (close(fd))
+		return sys_errmsg("close failed on \"%s\"", file);
+
+	return 0;
+
+out_error:
+	close(fd);
+	return -1;
+}
+
+/**
+ * read_hex_int - read an 'int' value from a file.
+ * @file: the file to read from
+ * @value: the result is stored here
+ *
+ * This function is the same as 'read_pos_ll()', but it reads an 'int'
+ * value, not 'long long'.
+ */
+static int read_hex_int(const char *file, int *value)
+{
+	long long res;
+
+	if (read_hex_ll(file, &res))
+		return -1;
+
+	/* Make sure the value has correct range */
+	if (res > INT_MAX || res < INT_MIN) {
+		errmsg("value %lld read from file \"%s\" is out of range",
+		       res, file);
+		errno = EINVAL;
+		return -1;
+	}
+
+	*value = res;
+	return 0;
+}
+
+/**
+ * read_pos_int - read a positive 'int' value from a file.
+ * @file: the file to read from
+ * @value: the result is stored here
+ *
+ * This function is the same as 'read_pos_ll()', but it reads an 'int'
+ * value, not 'long long'.
+ */
+static int read_pos_int(const char *file, int *value)
+{
+	long long res;
+
+	if (read_pos_ll(file, &res))
+		return -1;
+
+	/* Make sure the value is not too big */
+	if (res > INT_MAX) {
+		errmsg("value %lld read from file \"%s\" is out of range",
+		       res, file);
+		errno = EINVAL;
+		return -1;
+	}
+
+	*value = res;
+	return 0;
+}
+
+/**
+ * dev_read_hex_int - read an hex 'int' value from an MTD device sysfs file.
+ * @patt: file pattern to read from
+ * @mtd_num: MTD device number
+ * @value: the result is stored here
+ *
+ * This function returns %0 in case of success and %-1 in case of failure.
+ */
+static int dev_read_hex_int(const char *patt, int mtd_num, int *value)
+{
+	char file[strlen(patt) + 50];
+
+	sprintf(file, patt, mtd_num);
+	return read_hex_int(file, value);
+}
+
+/**
+ * dev_read_pos_int - read a positive 'int' value from an MTD device sysfs file.
+ * @patt: file pattern to read from
+ * @mtd_num: MTD device number
+ * @value: the result is stored here
+ *
+ * This function returns %0 in case of success and %-1 in case of failure.
+ */
+static int dev_read_pos_int(const char *patt, int mtd_num, int *value)
+{
+	char file[strlen(patt) + 50];
+
+	sprintf(file, patt, mtd_num);
+	return read_pos_int(file, value);
+}
+
+/**
+ * dev_read_pos_ll - read a positive 'long long' value from an MTD device sysfs file.
+ * @patt: file pattern to read from
+ * @mtd_num: MTD device number
+ * @value: the result is stored here
+ *
+ * This function returns %0 in case of success and %-1 in case of failure.
+ */
+static int dev_read_pos_ll(const char *patt, int mtd_num, long long *value)
+{
+	char file[strlen(patt) + 50];
+
+	sprintf(file, patt, mtd_num);
+	return read_pos_ll(file, value);
+}
+
+/**
+ * type_str2int - convert MTD device type to integer.
+ * @str: MTD device type string to convert
+ *
+ * This function converts MTD device type string @str, read from sysfs, into an
+ * integer.
+ */
+static int type_str2int(const char *str)
+{
+	if (!strcmp(str, "nand"))
+		return MTD_NANDFLASH;
+	if (!strcmp(str, "mlc-nand"))
+		return MTD_MLCNANDFLASH;
+	if (!strcmp(str, "nor"))
+		return MTD_NORFLASH;
+	if (!strcmp(str, "rom"))
+		return MTD_ROM;
+	if (!strcmp(str, "absent"))
+		return MTD_ABSENT;
+	if (!strcmp(str, "dataflash"))
+		return MTD_DATAFLASH;
+	if (!strcmp(str, "ram"))
+		return MTD_RAM;
+	if (!strcmp(str, "ubi"))
+		return MTD_UBIVOLUME;
+	return -1;
+}
+
+/**
+ * dev_node2num - find UBI device number by its character device node.
+ * @lib: MTD library descriptor
+ * @node: name of the MTD device node
+ * @mtd_num: MTD device number is returned here
+ *
+ * This function returns %0 in case of success and %-1 in case of failure.
+ */
+static int dev_node2num(struct libmtd *lib, const char *node, int *mtd_num)
+{
+	struct stat st;
+	int i, mjr, mnr;
+	struct mtd_info info;
+
+	if (stat(node, &st))
+		return sys_errmsg("cannot get information about \"%s\"", node);
+
+	if (!S_ISCHR(st.st_mode)) {
+		errmsg("\"%s\" is not a character device", node);
+		errno = EINVAL;
+		return -1;
+	}
+
+	mjr = major(st.st_rdev);
+	mnr = minor(st.st_rdev);
+
+	if (mtd_get_info((libmtd_t *)lib, &info))
+		return -1;
+
+	for (i = info.lowest_mtd_num; i <= info.highest_mtd_num; i++) {
+		int mjr1, mnr1, ret;
+
+		ret = dev_get_major(lib, i, &mjr1, &mnr1);
+		if (ret) {
+			if (errno == ENOENT)
+				continue;
+			if (!errno)
+				break;
+			return -1;
+		}
+
+		if (mjr1 == mjr && mnr1 == mnr) {
+			errno = 0;
+			*mtd_num = i;
+			return 0;
+		}
+	}
+
+	errno = ENODEV;
+	return -1;
+}
+
+/**
+ * sysfs_is_supported - check whether the MTD sub-system supports MTD.
+ * @lib: MTD library descriptor
+ *
+ * The Linux kernel MTD subsystem gained sysfs support starting from kernel
+ * 2.6.30 and libmtd tries to use sysfs interface if possible, because the NAND
+ * sub-page size is available there (and not available at all in pre-sysfs
+ * kernels).
+ *
+ * Very old kernels did not have "/sys/class/mtd" directory. Not very old
+ * kernels (e.g., 2.6.29) did have "/sys/class/mtd/mtdX" directories, by there
+ * were no files there, e.g., the "name" file was not present. So all we can do
+ * is to check for a "/sys/class/mtd/mtdX/name" file. But this is not a
+ * reliable check, because if this is a new system with no MTD devices - we'll
+ * treat it as a pre-sysfs system.
+ */
+static int sysfs_is_supported(struct libmtd *lib)
+{
+	int fd, num = -1;
+	DIR *sysfs_mtd;
+	char file[strlen(lib->mtd_name) + 10];
+
+	sysfs_mtd = opendir(lib->sysfs_mtd);
+	if (!sysfs_mtd) {
+		if (errno == ENOENT) {
+			errno = 0;
+			return 0;
+		}
+		return sys_errmsg("cannot open \"%s\"", lib->sysfs_mtd);
+	}
+
+	/*
+	 * First of all find an "mtdX" directory. This is needed because there
+	 * may be, for example, mtd1 but no mtd0.
+	 */
+	while (1) {
+		int ret, mtd_num;
+		char tmp_buf[256];
+		struct dirent *dirent;
+
+		dirent = readdir(sysfs_mtd);
+		if (!dirent)
+			break;
+
+		if (strlen(dirent->d_name) >= 255) {
+			errmsg("invalid entry in %s: \"%s\"",
+			       lib->sysfs_mtd, dirent->d_name);
+			errno = EINVAL;
+			closedir(sysfs_mtd);
+			return -1;
+		}
+
+		ret = sscanf(dirent->d_name, MTD_NAME_PATT"%s",
+			     &mtd_num, tmp_buf);
+		if (ret == 1) {
+			num = mtd_num;
+			break;
+		}
+	}
+
+	if (closedir(sysfs_mtd))
+		return sys_errmsg("closedir failed on \"%s\"", lib->sysfs_mtd);
+
+	if (num == -1)
+		/* No mtd device, treat this as pre-sysfs system */
+		return 0;
+
+	sprintf(file, lib->mtd_name, num);
+	fd = open(file, O_RDONLY | O_CLOEXEC);
+	if (fd == -1)
+		return 0;
+
+	if (close(fd)) {
+		sys_errmsg("close failed on \"%s\"", file);
+		return -1;
+	}
+
+	return 1;
+}
+
+libmtd_t libmtd_open(void)
+{
+	struct libmtd *lib;
+
+	lib = xzalloc(sizeof(*lib));
+
+	lib->offs64_ioctls = OFFS64_IOCTLS_UNKNOWN;
+
+	lib->sysfs_mtd = mkpath("/sys", SYSFS_MTD);
+	if (!lib->sysfs_mtd)
+		goto out_error;
+
+	lib->mtd = mkpath(lib->sysfs_mtd, MTD_NAME_PATT);
+	if (!lib->mtd)
+		goto out_error;
+
+	lib->mtd_name = mkpath(lib->mtd, MTD_NAME);
+	if (!lib->mtd_name)
+		goto out_error;
+
+	if (!sysfs_is_supported(lib)) {
+		free(lib->mtd);
+		free(lib->sysfs_mtd);
+		free(lib->mtd_name);
+		lib->mtd_name = lib->mtd = lib->sysfs_mtd = NULL;
+		return lib;
+	}
+
+	lib->mtd_dev = mkpath(lib->mtd, MTD_DEV);
+	if (!lib->mtd_dev)
+		goto out_error;
+
+	lib->mtd_type = mkpath(lib->mtd, MTD_TYPE);
+	if (!lib->mtd_type)
+		goto out_error;
+
+	lib->mtd_eb_size = mkpath(lib->mtd, MTD_EB_SIZE);
+	if (!lib->mtd_eb_size)
+		goto out_error;
+
+	lib->mtd_size = mkpath(lib->mtd, MTD_SIZE);
+	if (!lib->mtd_size)
+		goto out_error;
+
+	lib->mtd_min_io_size = mkpath(lib->mtd, MTD_MIN_IO_SIZE);
+	if (!lib->mtd_min_io_size)
+		goto out_error;
+
+	lib->mtd_subpage_size = mkpath(lib->mtd, MTD_SUBPAGE_SIZE);
+	if (!lib->mtd_subpage_size)
+		goto out_error;
+
+	lib->mtd_oob_size = mkpath(lib->mtd, MTD_OOB_SIZE);
+	if (!lib->mtd_oob_size)
+		goto out_error;
+
+	lib->mtd_region_cnt = mkpath(lib->mtd, MTD_REGION_CNT);
+	if (!lib->mtd_region_cnt)
+		goto out_error;
+
+	lib->mtd_flags = mkpath(lib->mtd, MTD_FLAGS);
+	if (!lib->mtd_flags)
+		goto out_error;
+
+	lib->sysfs_supported = 1;
+	return lib;
+
+out_error:
+	libmtd_close((libmtd_t)lib);
+	return NULL;
+}
+
+void libmtd_close(libmtd_t desc)
+{
+	struct libmtd *lib = (struct libmtd *)desc;
+
+	free(lib->mtd_flags);
+	free(lib->mtd_region_cnt);
+	free(lib->mtd_oob_size);
+	free(lib->mtd_subpage_size);
+	free(lib->mtd_min_io_size);
+	free(lib->mtd_size);
+	free(lib->mtd_eb_size);
+	free(lib->mtd_type);
+	free(lib->mtd_dev);
+	free(lib->mtd_name);
+	free(lib->mtd);
+	free(lib->sysfs_mtd);
+	free(lib);
+}
+
+int mtd_dev_present(libmtd_t desc, int mtd_num) {
+	struct stat st;
+	struct libmtd *lib = (struct libmtd *)desc;
+
+	if (!lib->sysfs_supported) {
+		return legacy_dev_present(mtd_num) == 1;
+	} else {
+		char file[strlen(lib->mtd) + 10];
+
+		sprintf(file, lib->mtd, mtd_num);
+		return !stat(file, &st);
+	}
+}
+
+int mtd_get_info(libmtd_t desc, struct mtd_info *info)
+{
+	DIR *sysfs_mtd;
+	struct dirent *dirent;
+	struct libmtd *lib = (struct libmtd *)desc;
+
+	memset(info, 0, sizeof(struct mtd_info));
+
+	if (!lib->sysfs_supported)
+		return legacy_mtd_get_info(info);
+
+	info->sysfs_supported = 1;
+
+	/*
+	 * We have to scan the MTD sysfs directory to identify how many MTD
+	 * devices are present.
+	 */
+	sysfs_mtd = opendir(lib->sysfs_mtd);
+	if (!sysfs_mtd) {
+		if (errno == ENOENT) {
+			errno = ENODEV;
+			return -1;
+		}
+		return sys_errmsg("cannot open \"%s\"", lib->sysfs_mtd);
+	}
+
+	info->lowest_mtd_num = INT_MAX;
+	while (1) {
+		int mtd_num, ret;
+		char tmp_buf[256];
+
+		errno = 0;
+		dirent = readdir(sysfs_mtd);
+		if (!dirent)
+			break;
+
+		if (strlen(dirent->d_name) >= 255) {
+			errmsg("invalid entry in %s: \"%s\"",
+			       lib->sysfs_mtd, dirent->d_name);
+			errno = EINVAL;
+			goto out_close;
+		}
+
+		ret = sscanf(dirent->d_name, MTD_NAME_PATT"%s",
+			     &mtd_num, tmp_buf);
+		if (ret == 1) {
+			info->mtd_dev_cnt += 1;
+			if (mtd_num > info->highest_mtd_num)
+				info->highest_mtd_num = mtd_num;
+			if (mtd_num < info->lowest_mtd_num)
+				info->lowest_mtd_num = mtd_num;
+		}
+	}
+
+	if (!dirent && errno) {
+		sys_errmsg("readdir failed on \"%s\"", lib->sysfs_mtd);
+		goto out_close;
+	}
+
+	if (closedir(sysfs_mtd))
+		return sys_errmsg("closedir failed on \"%s\"", lib->sysfs_mtd);
+
+	if (info->lowest_mtd_num == INT_MAX)
+		info->lowest_mtd_num = 0;
+
+	return 0;
+
+out_close:
+	closedir(sysfs_mtd);
+	return -1;
+}
+
+int mtd_get_dev_info1(libmtd_t desc, int mtd_num, struct mtd_dev_info *mtd)
+{
+	int ret;
+	struct libmtd *lib = (struct libmtd *)desc;
+
+	memset(mtd, 0, sizeof(struct mtd_dev_info));
+	mtd->mtd_num = mtd_num;
+
+	if (!mtd_dev_present(desc, mtd_num)) {
+		errno = ENODEV;
+		return -1;
+	} else if (!lib->sysfs_supported)
+		return legacy_get_dev_info1(mtd_num, mtd);
+
+	if (dev_get_major(lib, mtd_num, &mtd->major, &mtd->minor))
+		return -1;
+
+	ret = dev_read_data(lib->mtd_name, mtd_num, &mtd->name,
+			    MTD_NAME_MAX + 1);
+	if (ret < 0)
+		return -1;
+	((char *)mtd->name)[ret - 1] = '\0';
+
+	ret = dev_read_data(lib->mtd_type, mtd_num, &mtd->type_str,
+			    MTD_TYPE_MAX + 1);
+	if (ret < 0)
+		return -1;
+	((char *)mtd->type_str)[ret - 1] = '\0';
+
+	if (dev_read_pos_int(lib->mtd_eb_size, mtd_num, &mtd->eb_size))
+		return -1;
+	if (dev_read_pos_ll(lib->mtd_size, mtd_num, &mtd->size))
+		return -1;
+	if (dev_read_pos_int(lib->mtd_min_io_size, mtd_num, &mtd->min_io_size))
+		return -1;
+	if (dev_read_pos_int(lib->mtd_subpage_size, mtd_num, &mtd->subpage_size))
+		return -1;
+	if (dev_read_pos_int(lib->mtd_oob_size, mtd_num, &mtd->oob_size))
+		return -1;
+	if (dev_read_pos_int(lib->mtd_region_cnt, mtd_num, &mtd->region_cnt))
+		return -1;
+	if (dev_read_hex_int(lib->mtd_flags, mtd_num, &ret))
+		return -1;
+	mtd->writable = !!(ret & MTD_WRITEABLE);
+
+	mtd->eb_cnt = mtd->size / mtd->eb_size;
+	mtd->type = type_str2int(mtd->type_str);
+	mtd->bb_allowed = !!(mtd->type == MTD_NANDFLASH ||
+				mtd->type == MTD_MLCNANDFLASH);
+
+	return 0;
+}
+
+int mtd_get_dev_info(libmtd_t desc, const char *node, struct mtd_dev_info *mtd)
+{
+	int mtd_num;
+	struct libmtd *lib = (struct libmtd *)desc;
+
+	if (!lib->sysfs_supported)
+		return legacy_get_dev_info(node, mtd);
+
+	if (dev_node2num(lib, node, &mtd_num))
+		return -1;
+
+	return mtd_get_dev_info1(desc, mtd_num, mtd);
+}
+
+static inline int mtd_ioctl_error(const struct mtd_dev_info *mtd, int eb,
+				  const char *sreq)
+{
+	return sys_errmsg("%s ioctl failed for eraseblock %d (mtd%d)",
+			  sreq, eb, mtd->mtd_num);
+}
+
+static int mtd_valid_erase_block(const struct mtd_dev_info *mtd, int eb)
+{
+	if (eb < 0 || eb >= mtd->eb_cnt) {
+		errmsg("bad eraseblock number %d, mtd%d has %d eraseblocks",
+		       eb, mtd->mtd_num, mtd->eb_cnt);
+		errno = EINVAL;
+		return -1;
+	}
+	return 0;
+}
+
+static int mtd_xlock(const struct mtd_dev_info *mtd, int fd, int eb, int req,
+		     const char *sreq)
+{
+	int ret;
+	struct erase_info_user ei;
+
+	ret = mtd_valid_erase_block(mtd, eb);
+	if (ret)
+		return ret;
+
+	ei.start = eb * mtd->eb_size;
+	ei.length = mtd->eb_size;
+
+	ret = ioctl(fd, req, &ei);
+	if (ret < 0)
+		return mtd_ioctl_error(mtd, eb, sreq);
+
+	return 0;
+}
+#define mtd_xlock(mtd, fd, eb, req) mtd_xlock(mtd, fd, eb, req, #req)
+
+int mtd_lock(const struct mtd_dev_info *mtd, int fd, int eb)
+{
+	return mtd_xlock(mtd, fd, eb, MEMLOCK);
+}
+
+int mtd_unlock(const struct mtd_dev_info *mtd, int fd, int eb)
+{
+	return mtd_xlock(mtd, fd, eb, MEMUNLOCK);
+}
+
+int mtd_erase(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb)
+{
+	int ret;
+	struct libmtd *lib = (struct libmtd *)desc;
+	struct erase_info_user64 ei64;
+	struct erase_info_user ei;
+
+	ret = mtd_valid_erase_block(mtd, eb);
+	if (ret)
+		return ret;
+
+	ei64.start = (__u64)eb * mtd->eb_size;
+	ei64.length = mtd->eb_size;
+
+	if (lib->offs64_ioctls == OFFS64_IOCTLS_SUPPORTED ||
+	    lib->offs64_ioctls == OFFS64_IOCTLS_UNKNOWN) {
+		ret = ioctl(fd, MEMERASE64, &ei64);
+		if (ret == 0)
+			return ret;
+
+		if (errno != ENOTTY ||
+		    lib->offs64_ioctls != OFFS64_IOCTLS_UNKNOWN)
+			return mtd_ioctl_error(mtd, eb, "MEMERASE64");
+
+		/*
+		 * MEMERASE64 support was added in kernel version 2.6.31, so
+		 * probably we are working with older kernel and this ioctl is
+		 * not supported.
+		 */
+		lib->offs64_ioctls = OFFS64_IOCTLS_NOT_SUPPORTED;
+	}
+
+	if (ei64.start + ei64.length > 0xFFFFFFFF) {
+		errmsg("this system can address only %u eraseblocks",
+		       0xFFFFFFFFU / mtd->eb_size);
+		errno = EINVAL;
+		return -1;
+	}
+
+	ei.start = ei64.start;
+	ei.length = ei64.length;
+	ret = ioctl(fd, MEMERASE, &ei);
+	if (ret < 0)
+		return mtd_ioctl_error(mtd, eb, "MEMERASE");
+	return 0;
+}
+
+int mtd_regioninfo(int fd, int regidx, struct region_info_user *reginfo)
+{
+	int ret;
+
+	if (regidx < 0) {
+		errno = ENODEV;
+		return -1;
+	}
+
+	reginfo->regionindex = regidx;
+
+	ret = ioctl(fd, MEMGETREGIONINFO, reginfo);
+	if (ret < 0)
+		return sys_errmsg("%s ioctl failed for erase region %d",
+			"MEMGETREGIONINFO", regidx);
+
+	return 0;
+}
+
+int mtd_is_locked(const struct mtd_dev_info *mtd, int fd, int eb)
+{
+	int ret;
+	erase_info_t ei;
+
+	ei.start = eb * mtd->eb_size;
+	ei.length = mtd->eb_size;
+
+	ret = ioctl(fd, MEMISLOCKED, &ei);
+	if (ret < 0) {
+		if (errno != ENOTTY && errno != EOPNOTSUPP)
+			return mtd_ioctl_error(mtd, eb, "MEMISLOCKED");
+		else
+			errno = EOPNOTSUPP;
+	}
+
+	return ret;
+}
+
+/* Patterns to write to a physical eraseblock when torturing it */
+static uint8_t patterns[] = {0xa5, 0x5a, 0x0};
+
+/**
+ * check_pattern - check if buffer contains only a certain byte pattern.
+ * @buf: buffer to check
+ * @patt: the pattern to check
+ * @size: buffer size in bytes
+ *
+ * This function returns %1 in there are only @patt bytes in @buf, and %0 if
+ * something else was also found.
+ */
+static int check_pattern(const void *buf, uint8_t patt, int size)
+{
+	int i;
+
+	for (i = 0; i < size; i++)
+		if (((const uint8_t *)buf)[i] != patt)
+			return 0;
+	return 1;
+}
+
+int mtd_torture(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb)
+{
+	int err, i, patt_count;
+	void *buf;
+
+	normsg("run torture test for PEB %d", eb);
+	patt_count = ARRAY_SIZE(patterns);
+
+	buf = xmalloc(mtd->eb_size);
+
+	for (i = 0; i < patt_count; i++) {
+		err = mtd_erase(desc, mtd, fd, eb);
+		if (err)
+			goto out;
+
+		/* Make sure the PEB contains only 0xFF bytes */
+		err = mtd_read(mtd, fd, eb, 0, buf, mtd->eb_size);
+		if (err)
+			goto out;
+
+		err = check_pattern(buf, 0xFF, mtd->eb_size);
+		if (err == 0) {
+			errmsg("erased PEB %d, but a non-0xFF byte found", eb);
+			errno = EIO;
+			goto out;
+		}
+
+		/* Write a pattern and check it */
+		memset(buf, patterns[i], mtd->eb_size);
+		err = mtd_write(desc, mtd, fd, eb, 0, buf, mtd->eb_size, NULL,
+				0, 0);
+		if (err)
+			goto out;
+
+		memset(buf, ~patterns[i], mtd->eb_size);
+		err = mtd_read(mtd, fd, eb, 0, buf, mtd->eb_size);
+		if (err)
+			goto out;
+
+		err = check_pattern(buf, patterns[i], mtd->eb_size);
+		if (err == 0) {
+			errmsg("pattern %x checking failed for PEB %d",
+				patterns[i], eb);
+			errno = EIO;
+			goto out;
+		}
+	}
+
+	err = 0;
+	normsg("PEB %d passed torture test, do not mark it a bad", eb);
+
+out:
+	free(buf);
+	return -1;
+}
+
+int mtd_is_bad(const struct mtd_dev_info *mtd, int fd, int eb)
+{
+	int ret;
+	loff_t seek;
+
+	ret = mtd_valid_erase_block(mtd, eb);
+	if (ret)
+		return ret;
+
+	if (!mtd->bb_allowed)
+		return 0;
+
+	seek = (loff_t)eb * mtd->eb_size;
+	ret = ioctl(fd, MEMGETBADBLOCK, &seek);
+	if (ret == -1)
+		return mtd_ioctl_error(mtd, eb, "MEMGETBADBLOCK");
+	return ret;
+}
+
+int mtd_mark_bad(const struct mtd_dev_info *mtd, int fd, int eb)
+{
+	int ret;
+	loff_t seek;
+
+	if (!mtd->bb_allowed) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	ret = mtd_valid_erase_block(mtd, eb);
+	if (ret)
+		return ret;
+
+	seek = (loff_t)eb * mtd->eb_size;
+	ret = ioctl(fd, MEMSETBADBLOCK, &seek);
+	if (ret == -1)
+		return mtd_ioctl_error(mtd, eb, "MEMSETBADBLOCK");
+	return 0;
+}
+
+int mtd_read(const struct mtd_dev_info *mtd, int fd, int eb, int offs,
+	     void *buf, int len)
+{
+	int ret, rd = 0;
+	off_t seek;
+
+	ret = mtd_valid_erase_block(mtd, eb);
+	if (ret)
+		return ret;
+
+	if (offs < 0 || offs + len > mtd->eb_size) {
+		errmsg("bad offset %d or length %d, mtd%d eraseblock size is %d",
+		       offs, len, mtd->mtd_num, mtd->eb_size);
+		errno = EINVAL;
+		return -1;
+	}
+
+	/* Seek to the beginning of the eraseblock */
+	seek = (off_t)eb * mtd->eb_size + offs;
+	if (lseek(fd, seek, SEEK_SET) != seek)
+		return sys_errmsg("cannot seek mtd%d to offset %"PRIdoff_t,
+				  mtd->mtd_num, seek);
+
+	while (rd < len) {
+		ret = read(fd, buf, len);
+		if (ret < 0)
+			return sys_errmsg("cannot read %d bytes from mtd%d (eraseblock %d, offset %d)",
+					  len, mtd->mtd_num, eb, offs);
+		rd += ret;
+	}
+
+	return 0;
+}
+
+static int legacy_auto_oob_layout(const struct mtd_dev_info *mtd, int fd,
+				  int ooblen, void *oob) {
+	struct nand_oobinfo old_oobinfo;
+	int start, len;
+	uint8_t *tmp_buf;
+
+	/* Read the current oob info */
+	if (ioctl(fd, MEMGETOOBSEL, &old_oobinfo))
+		return sys_errmsg("MEMGETOOBSEL failed");
+
+	tmp_buf = malloc(ooblen);
+	memcpy(tmp_buf, oob, ooblen);
+
+	/*
+	 * We use autoplacement and have the oobinfo with the autoplacement
+	 * information from the kernel available
+	 */
+	if (old_oobinfo.useecc == MTD_NANDECC_AUTOPLACE) {
+		int i, tags_pos = 0;
+		for (i = 0; old_oobinfo.oobfree[i][1]; i++) {
+			/* Set the reserved bytes to 0xff */
+			start = old_oobinfo.oobfree[i][0];
+			len = old_oobinfo.oobfree[i][1];
+			memcpy(oob + start, tmp_buf + tags_pos, len);
+			tags_pos += len;
+		}
+	} else {
+		/* Set at least the ecc byte positions to 0xff */
+		start = old_oobinfo.eccbytes;
+		len = mtd->oob_size - start;
+		memcpy(oob + start, tmp_buf + start, len);
+	}
+
+	return 0;
+}
+
+int mtd_write(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb,
+	      int offs, void *data, int len, void *oob, int ooblen,
+	      uint8_t mode)
+{
+	int ret;
+	off_t seek;
+	struct mtd_write_req ops;
+
+	ret = mtd_valid_erase_block(mtd, eb);
+	if (ret)
+		return ret;
+
+	if (offs < 0 || offs + len > mtd->eb_size) {
+		errmsg("bad offset %d or length %d, mtd%d eraseblock size is %d",
+		       offs, len, mtd->mtd_num, mtd->eb_size);
+		errno = EINVAL;
+		return -1;
+	}
+	if (offs % mtd->subpage_size) {
+		errmsg("write offset %d is not aligned to mtd%d min. I/O size %d",
+		       offs, mtd->mtd_num, mtd->subpage_size);
+		errno = EINVAL;
+		return -1;
+	}
+	if (len % mtd->subpage_size) {
+		errmsg("write length %d is not aligned to mtd%d min. I/O size %d",
+		       len, mtd->mtd_num, mtd->subpage_size);
+		errno = EINVAL;
+		return -1;
+	}
+
+	/* Calculate seek address */
+	seek = (off_t)eb * mtd->eb_size + offs;
+
+	if (oob) {
+		ops.start = seek;
+		ops.len = len;
+		ops.ooblen = ooblen;
+		ops.usr_data = (uint64_t)(unsigned long)data;
+		ops.usr_oob = (uint64_t)(unsigned long)oob;
+		ops.mode = mode;
+
+		ret = ioctl(fd, MEMWRITE, &ops);
+		if (ret == 0)
+			return 0;
+		else if (errno != ENOTTY && errno != EOPNOTSUPP)
+			return mtd_ioctl_error(mtd, eb, "MEMWRITE");
+
+		/* Fall back to old OOB ioctl() if necessary */
+		if (mode == MTD_OPS_AUTO_OOB)
+			if (legacy_auto_oob_layout(mtd, fd, ooblen, oob))
+				return -1;
+		if (mtd_write_oob(desc, mtd, fd, seek, ooblen, oob) < 0)
+			return sys_errmsg("cannot write to OOB");
+	}
+	if (data) {
+		/* Seek to the beginning of the eraseblock */
+		if (lseek(fd, seek, SEEK_SET) != seek)
+			return sys_errmsg("cannot seek mtd%d to offset %"PRIdoff_t,
+					mtd->mtd_num, seek);
+		ret = write(fd, data, len);
+		if (ret != len)
+			return sys_errmsg("cannot write %d bytes to mtd%d "
+					  "(eraseblock %d, offset %d)",
+					  len, mtd->mtd_num, eb, offs);
+	}
+
+	return 0;
+}
+
+int do_oob_op(libmtd_t desc, const struct mtd_dev_info *mtd, int fd,
+	      uint64_t start, uint64_t length, void *data, unsigned int cmd64,
+	      unsigned int cmd)
+{
+	int ret, oob_offs;
+	struct mtd_oob_buf64 oob64;
+	struct mtd_oob_buf oob;
+	unsigned long long max_offs;
+	const char *cmd64_str, *cmd_str;
+	struct libmtd *lib = (struct libmtd *)desc;
+
+	if (cmd64 ==  MEMREADOOB64) {
+		cmd64_str = "MEMREADOOB64";
+		cmd_str   = "MEMREADOOB";
+	} else {
+		cmd64_str = "MEMWRITEOOB64";
+		cmd_str   = "MEMWRITEOOB";
+	}
+
+	max_offs = (unsigned long long)mtd->eb_cnt * mtd->eb_size;
+	if (start >= max_offs) {
+		errmsg("bad page address %" PRIu64 ", mtd%d has %d eraseblocks (%llu bytes)",
+		       start, mtd->mtd_num, mtd->eb_cnt, max_offs);
+		errno = EINVAL;
+		return -1;
+	}
+
+	oob_offs = start & (mtd->min_io_size - 1);
+	if (oob_offs + length > mtd->oob_size || length == 0) {
+		errmsg("Cannot write %" PRIu64 " OOB bytes to address %" PRIu64 " (OOB offset %u) - mtd%d OOB size is only %d bytes",
+		       length, start, oob_offs, mtd->mtd_num,  mtd->oob_size);
+		errno = EINVAL;
+		return -1;
+	}
+
+	oob64.start = start;
+	oob64.length = length;
+	oob64.usr_ptr = (uint64_t)(unsigned long)data;
+
+	if (lib->offs64_ioctls == OFFS64_IOCTLS_SUPPORTED ||
+	    lib->offs64_ioctls == OFFS64_IOCTLS_UNKNOWN) {
+		ret = ioctl(fd, cmd64, &oob64);
+		if (ret == 0)
+			return ret;
+
+		if (errno != ENOTTY ||
+		    lib->offs64_ioctls != OFFS64_IOCTLS_UNKNOWN) {
+			sys_errmsg("%s ioctl failed for mtd%d, offset %" PRIu64 " (eraseblock %" PRIu64 ")",
+				   cmd64_str, mtd->mtd_num, start, start / mtd->eb_size);
+		}
+
+		/*
+		 * MEMREADOOB64/MEMWRITEOOB64 support was added in kernel
+		 * version 2.6.31, so probably we are working with older kernel
+		 * and these ioctls are not supported.
+		 */
+		lib->offs64_ioctls = OFFS64_IOCTLS_NOT_SUPPORTED;
+	}
+
+	if (oob64.start > 0xFFFFFFFFULL) {
+		errmsg("this system can address only up to address %lu",
+		       0xFFFFFFFFUL);
+		errno = EINVAL;
+		return -1;
+	}
+
+	oob.start = oob64.start;
+	oob.length = oob64.length;
+	oob.ptr = data;
+
+	ret = ioctl(fd, cmd, &oob);
+	if (ret < 0)
+		sys_errmsg("%s ioctl failed for mtd%d, offset %" PRIu64 " (eraseblock %" PRIu64 ")",
+			   cmd_str, mtd->mtd_num, start, start / mtd->eb_size);
+	return ret;
+}
+
+int mtd_read_oob(libmtd_t desc, const struct mtd_dev_info *mtd, int fd,
+		 uint64_t start, uint64_t length, void *data)
+{
+	return do_oob_op(desc, mtd, fd, start, length, data,
+			 MEMREADOOB64, MEMREADOOB);
+}
+
+int mtd_write_oob(libmtd_t desc, const struct mtd_dev_info *mtd, int fd,
+		  uint64_t start, uint64_t length, void *data)
+{
+	return do_oob_op(desc, mtd, fd, start, length, data,
+			 MEMWRITEOOB64, MEMWRITEOOB);
+}
+
+int mtd_write_img(const struct mtd_dev_info *mtd, int fd, int eb, int offs,
+		  const char *img_name)
+{
+	int tmp, ret, in_fd, len, written = 0;
+	off_t seek;
+	struct stat st;
+	char *buf;
+
+	ret = mtd_valid_erase_block(mtd, eb);
+	if (ret)
+		return ret;
+
+	if (offs < 0 || offs >= mtd->eb_size) {
+		errmsg("bad offset %d, mtd%d eraseblock size is %d",
+		       offs, mtd->mtd_num, mtd->eb_size);
+		errno = EINVAL;
+		return -1;
+	}
+	if (offs % mtd->subpage_size) {
+		errmsg("write offset %d is not aligned to mtd%d min. I/O size %d",
+		       offs, mtd->mtd_num, mtd->subpage_size);
+		errno = EINVAL;
+		return -1;
+	}
+
+	in_fd = open(img_name, O_RDONLY | O_CLOEXEC);
+	if (in_fd == -1)
+		return sys_errmsg("cannot open \"%s\"", img_name);
+
+	if (fstat(in_fd, &st)) {
+		sys_errmsg("cannot stat %s", img_name);
+		goto out_close;
+	}
+
+	len = st.st_size;
+	if (len % mtd->subpage_size) {
+		errmsg("size of \"%s\" is %d byte, which is not aligned to "
+		       "mtd%d min. I/O size %d", img_name, len, mtd->mtd_num,
+		       mtd->subpage_size);
+		errno = EINVAL;
+		goto out_close;
+	}
+	tmp = (offs + len + mtd->eb_size - 1) / mtd->eb_size;
+	if (eb + tmp > mtd->eb_cnt) {
+		errmsg("\"%s\" image size is %d bytes, mtd%d size is %d "
+		       "eraseblocks, the image does not fit if we write it "
+		       "starting from eraseblock %d, offset %d",
+		       img_name, len, mtd->mtd_num, mtd->eb_cnt, eb, offs);
+		errno = EINVAL;
+		goto out_close;
+	}
+
+	/* Seek to the beginning of the eraseblock */
+	seek = (off_t)eb * mtd->eb_size + offs;
+	if (lseek(fd, seek, SEEK_SET) != seek) {
+		sys_errmsg("cannot seek mtd%d to offset %"PRIdoff_t,
+			    mtd->mtd_num, seek);
+		goto out_close;
+	}
+
+	buf = xmalloc(mtd->eb_size);
+
+	while (written < len) {
+		int rd = 0;
+
+		do {
+			ret = read(in_fd, buf, mtd->eb_size - offs - rd);
+			if (ret == -1) {
+				sys_errmsg("cannot read \"%s\"", img_name);
+				goto out_free;
+			}
+			rd += ret;
+		} while (ret && rd < mtd->eb_size - offs);
+
+		ret = write(fd, buf, rd);
+		if (ret != rd) {
+			sys_errmsg("cannot write %d bytes to mtd%d (eraseblock %d, offset %d)",
+				   len, mtd->mtd_num, eb, offs);
+			goto out_free;
+		}
+
+		offs = 0;
+		eb += 1;
+		written += rd;
+	}
+
+	free(buf);
+	close(in_fd);
+	return 0;
+
+out_free:
+	free(buf);
+out_close:
+	close(in_fd);
+	return -1;
+}
+
+int mtd_probe_node(libmtd_t desc, const char *node)
+{
+	struct stat st;
+	struct mtd_info info;
+	int i, mjr, mnr;
+	struct libmtd *lib = (struct libmtd *)desc;
+
+	if (stat(node, &st))
+		return sys_errmsg("cannot get information about \"%s\"", node);
+
+	if (!S_ISCHR(st.st_mode)) {
+		errmsg("\"%s\" is not a character device", node);
+		errno = EINVAL;
+		return -1;
+	}
+
+	mjr = major(st.st_rdev);
+	mnr = minor(st.st_rdev);
+
+	if (mtd_get_info((libmtd_t *)lib, &info))
+		return -1;
+
+	if (!lib->sysfs_supported)
+		return 0;
+
+	for (i = info.lowest_mtd_num; i <= info.highest_mtd_num; i++) {
+		int mjr1, mnr1, ret;
+
+		ret = dev_get_major(lib, i, &mjr1, &mnr1);
+		if (ret) {
+			if (errno == ENOENT)
+				continue;
+			if (!errno)
+				break;
+			return -1;
+		}
+
+		if (mjr1 == mjr && mnr1 == mnr)
+			return 1;
+	}
+
+	errno = 0;
+	return -1;
+}
diff --git a/src/support/libnandapi/src/libmtd_legacy.c b/src/support/libnandapi/src/libmtd_legacy.c
new file mode 100644
index 0000000..a0756de
--- /dev/null
+++ b/src/support/libnandapi/src/libmtd_legacy.c
@@ -0,0 +1,384 @@
+/*
+ * Copyright (C) 2009 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Author: Artem Bityutskiy
+ *
+ * This file  is part of the MTD library. Implements pre-2.6.30 kernels support,
+ * where MTD did not have sysfs interface. The main limitation of the old
+ * kernels was that the sub-page size was not exported to user-space, so it was
+ * not possible to get sub-page size.
+ */
+
+#include <inttypes.h>
+#include <limits.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/sysmacros.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <mtd/mtd-user.h>
+
+#include "../inc/libmtd.h"
+#include "../inc/libmtd_int.h"
+#include "../inc/common.h"
+
+#define MTD_PROC_FILE "/proc/mtd"
+#define MTD_DEV_PATT  "/dev/mtd%d"
+#define MTD_DEV_MAJOR 90
+
+#define PROC_MTD_FIRST     "dev:    size   erasesize  name\n"
+#define PROC_MTD_FIRST_LEN (sizeof(PROC_MTD_FIRST) - 1)
+#define PROC_MTD_MAX_LEN   4096
+#define PROC_MTD_PATT      "mtd%d: %llx %x"
+
+/**
+ * struct proc_parse_info - /proc/mtd parsing information.
+ * @mtd_num: MTD device number
+ * @size: device size
+ * @eb_size: eraseblock size
+ * @name: device name
+ * @buf: contents of /proc/mtd
+ * @data_size: how much data was read into @buf
+ * @pos: next string in @buf to parse
+ */
+struct proc_parse_info
+{
+	int mtd_num;
+	long long size;
+	char name[MTD_NAME_MAX + 1];
+	int eb_size;
+	char *buf;
+	int data_size;
+	char *next;
+};
+
+static int proc_parse_start(struct proc_parse_info *pi)
+{
+	int fd, ret;
+
+	fd = open(MTD_PROC_FILE, O_RDONLY);
+	if (fd == -1)
+		return -1;
+
+	pi->buf = xmalloc(PROC_MTD_MAX_LEN);
+
+	ret = read(fd, pi->buf, PROC_MTD_MAX_LEN);
+	if (ret == -1) {
+		sys_errmsg("cannot read \"%s\"", MTD_PROC_FILE);
+		goto out_free;
+	}
+
+	if (ret < PROC_MTD_FIRST_LEN ||
+	    memcmp(pi->buf, PROC_MTD_FIRST, PROC_MTD_FIRST_LEN)) {
+		errmsg("\"%s\" does not start with \"%s\"", MTD_PROC_FILE,
+		       PROC_MTD_FIRST);
+		goto out_free;
+	}
+
+	pi->data_size = ret;
+	pi->next = pi->buf + PROC_MTD_FIRST_LEN;
+
+	close(fd);
+	return 0;
+
+out_free:
+	free(pi->buf);
+	close(fd);
+	return -1;
+}
+
+static int proc_parse_next(struct proc_parse_info *pi)
+{
+	int ret, len, pos = pi->next - pi->buf;
+	char *p, *p1;
+
+	if (pos >= pi->data_size) {
+		free(pi->buf);
+		return 0;
+	}
+
+	ret = sscanf(pi->next, PROC_MTD_PATT, &pi->mtd_num, &pi->size,
+		     &pi->eb_size);
+	if (ret != 3)
+		return errmsg("\"%s\" pattern not found", PROC_MTD_PATT);
+
+	p = memchr(pi->next, '\"', pi->data_size - pos);
+	if (!p)
+		return errmsg("opening \" not found");
+	p += 1;
+	pos = p - pi->buf;
+	if (pos >= pi->data_size)
+		return errmsg("opening \" not found");
+
+	p1 = memchr(p, '\"', pi->data_size - pos);
+	if (!p1)
+		return errmsg("closing \" not found");
+	pos = p1 - pi->buf;
+	if (pos >= pi->data_size)
+		return errmsg("closing \" not found");
+
+	len = p1 - p;
+	if (len > MTD_NAME_MAX)
+		return errmsg("too long mtd%d device name", pi->mtd_num);
+
+	memcpy(pi->name, p, len);
+	pi->name[len] = '\0';
+
+	if (p1[1] != '\n')
+		return errmsg("opening \"\n\" not found");
+	pi->next = p1 + 2;
+	return 1;
+}
+
+/**
+ * legacy_libmtd_open - legacy version of 'libmtd_open()'.
+ *
+ * This function is just checks that MTD is present in the system. Returns
+ * zero in case of success and %-1 in case of failure. In case of failure,
+ * errno contains zero if MTD is not present in the system, or contains the
+ * error code if a real error happened. This is similar to the 'libmtd_open()'
+ * return conventions.
+ */
+int legacy_libmtd_open(void)
+{
+	int fd;
+
+	fd = open(MTD_PROC_FILE, O_RDONLY);
+	if (fd == -1) {
+		if (errno == ENOENT)
+			errno = 0;
+		return -1;
+	}
+
+	close(fd);
+	return 0;
+}
+
+/**
+ * legacy_dev_presentl - legacy version of 'mtd_dev_present()'.
+ * @info: the MTD device information is returned here
+ *
+ * When the kernel does not provide sysfs files for the MTD subsystem,
+ * fall-back to parsing the /proc/mtd file to determine whether an mtd device
+ * number @mtd_num is present.
+ */
+int legacy_dev_present(int mtd_num)
+{
+	int ret;
+	struct proc_parse_info pi;
+
+	ret = proc_parse_start(&pi);
+	if (ret)
+		return -1;
+
+	while (proc_parse_next(&pi)) {
+		if (pi.mtd_num == mtd_num)
+			return 1;
+	}
+
+	return 0;
+}
+
+/**
+ * legacy_mtd_get_info - legacy version of 'mtd_get_info()'.
+ * @info: the MTD device information is returned here
+ *
+ * This function is similar to 'mtd_get_info()' and has the same conventions.
+ */
+int legacy_mtd_get_info(struct mtd_info *info)
+{
+	int ret;
+	struct proc_parse_info pi;
+
+	ret = proc_parse_start(&pi);
+	if (ret)
+		return -1;
+
+	info->lowest_mtd_num = INT_MAX;
+	while (proc_parse_next(&pi)) {
+		info->mtd_dev_cnt += 1;
+		if (pi.mtd_num > info->highest_mtd_num)
+			info->highest_mtd_num = pi.mtd_num;
+		if (pi.mtd_num < info->lowest_mtd_num)
+			info->lowest_mtd_num = pi.mtd_num;
+	}
+
+	return 0;
+}
+
+/**
+ * legacy_get_dev_info - legacy version of 'mtd_get_dev_info()'.
+ * @node: name of the MTD device node
+ * @mtd: the MTD device information is returned here
+ *
+ * This function is similar to 'mtd_get_dev_info()' and has the same
+ * conventions.
+ */
+int legacy_get_dev_info(const char *node, struct mtd_dev_info *mtd)
+{
+	struct stat st;
+	struct mtd_info_user ui;
+	int fd, ret;
+	loff_t offs = 0;
+	struct proc_parse_info pi;
+
+	if (stat(node, &st)) {
+		sys_errmsg("cannot open \"%s\"", node);
+		if (errno == ENOENT)
+			normsg("MTD subsystem is old and does not support "
+			       "sysfs, so MTD character device nodes have "
+			       "to exist");
+	}
+
+	if (!S_ISCHR(st.st_mode)) {
+		errno = EINVAL;
+		return errmsg("\"%s\" is not a character device", node);
+	}
+
+	memset(mtd, '\0', sizeof(struct mtd_dev_info));
+	mtd->major = major(st.st_rdev);
+	mtd->minor = minor(st.st_rdev);
+
+	if (mtd->major != MTD_DEV_MAJOR) {
+		errno = EINVAL;
+		return errmsg("\"%s\" has major number %d, MTD devices have "
+			      "major %d", node, mtd->major, MTD_DEV_MAJOR);
+	}
+
+	mtd->mtd_num = mtd->minor / 2;
+
+	fd = open(node, O_RDONLY);
+	if (fd == -1)
+		return sys_errmsg("cannot open \"%s\"", node);
+
+	if (ioctl(fd, MEMGETINFO, &ui)) {
+		sys_errmsg("MEMGETINFO ioctl request failed");
+		goto out_close;
+	}
+
+	ret = ioctl(fd, MEMGETBADBLOCK, &offs);
+	if (ret == -1) {
+		if (errno != EOPNOTSUPP) {
+			sys_errmsg("MEMGETBADBLOCK ioctl failed");
+			goto out_close;
+		}
+		errno = 0;
+		mtd->bb_allowed = 0;
+	} else
+		mtd->bb_allowed = 1;
+
+	mtd->type = ui.type;
+	mtd->size = ui.size;
+	mtd->eb_size = ui.erasesize;
+	mtd->min_io_size = ui.writesize;
+	mtd->oob_size = ui.oobsize;
+
+	if (mtd->min_io_size <= 0) {
+		errmsg("mtd%d (%s) has insane min. I/O unit size %d",
+		       mtd->mtd_num, node, mtd->min_io_size);
+		goto out_close;
+	}
+	if (mtd->eb_size <= 0 || mtd->eb_size < mtd->min_io_size) {
+		errmsg("mtd%d (%s) has insane eraseblock size %d",
+		       mtd->mtd_num, node, mtd->eb_size);
+		goto out_close;
+	}
+	if (mtd->size <= 0 || mtd->size < mtd->eb_size) {
+		errmsg("mtd%d (%s) has insane size %lld",
+		       mtd->mtd_num, node, mtd->size);
+		goto out_close;
+	}
+	mtd->eb_cnt = mtd->size / mtd->eb_size;
+
+	switch(mtd->type) {
+	case MTD_ABSENT:
+		errmsg("mtd%d (%s) is removable and is not present",
+		       mtd->mtd_num, node);
+		goto out_close;
+	case MTD_RAM:
+		strcpy((char *)mtd->type_str, "ram");
+		break;
+	case MTD_ROM:
+		strcpy((char *)mtd->type_str, "rom");
+		break;
+	case MTD_NORFLASH:
+		strcpy((char *)mtd->type_str, "nor");
+		break;
+	case MTD_NANDFLASH:
+		strcpy((char *)mtd->type_str, "nand");
+		break;
+	case MTD_MLCNANDFLASH:
+		strcpy((char *)mtd->type_str, "mlc-nand");
+		break;
+	case MTD_DATAFLASH:
+		strcpy((char *)mtd->type_str, "dataflash");
+		break;
+	case MTD_UBIVOLUME:
+		strcpy((char *)mtd->type_str, "ubi");
+		break;
+	default:
+		goto out_close;
+	}
+
+	if (ui.flags & MTD_WRITEABLE)
+		mtd->writable = 1;
+	mtd->subpage_size = mtd->min_io_size;
+
+	close(fd);
+
+	/*
+	 * Unfortunately, the device name is not available via ioctl, and
+	 * we have to parse /proc/mtd to get it.
+	 */
+	ret = proc_parse_start(&pi);
+	if (ret)
+		return -1;
+
+	while (proc_parse_next(&pi)) {
+		if (pi.mtd_num == mtd->mtd_num) {
+			strcpy((char *)mtd->name, pi.name);
+			return 0;
+		}
+	}
+
+	errmsg("mtd%d not found in \"%s\"", mtd->mtd_num, MTD_PROC_FILE);
+	errno = ENOENT;
+	return -1;
+
+out_close:
+	close(fd);
+	return -1;
+}
+
+/**
+ * legacy_get_dev_info1 - legacy version of 'mtd_get_dev_info1()'.
+ * @node: name of the MTD device node
+ * @mtd: the MTD device information is returned here
+ *
+ * This function is similar to 'mtd_get_dev_info1()' and has the same
+ * conventions.
+ */
+int legacy_get_dev_info1(int mtd_num, struct mtd_dev_info *mtd)
+{
+	char node[sizeof(MTD_DEV_PATT) + 20];
+
+	sprintf(node, MTD_DEV_PATT, mtd_num);
+	return legacy_get_dev_info(node, mtd);
+}
diff --git a/src/support/libnandapi/src/mtk_device_wrap.c b/src/support/libnandapi/src/mtk_device_wrap.c
new file mode 100644
index 0000000..66280b5
--- /dev/null
+++ b/src/support/libnandapi/src/mtk_device_wrap.c
@@ -0,0 +1,224 @@
+
+#include "../inc/mtk_device_wrap.h"
+
+#if MTK_BOOTDEV_TYPE == BOOTDEV_TYPE_NAND
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../inc/nand_api.h"
+#include "../inc/common.h"
+#include "../inc/xalloc.h"
+
+
+int mtk_device_wrap_m_open(const char *pathname, int flags, mode_t mode)
+{
+    return nand_open(pathname, flags);
+}
+
+int mtk_device_wrap_open(const char *pathname, int flags)
+{
+    return nand_open(pathname, flags);
+}
+
+off_t mtk_device_wrap_seek(int fd, off_t offset, int whence)
+{
+    return nand_seek(fd, offset, whence);
+}
+
+off64_t mtk_device_wrap_seek64(int fd, off64_t offset, int whence)
+{
+    return nand_seek64(fd, offset, whence);
+}
+
+ssize_t mtk_device_wrap_read(int fd, void *buf, size_t count)
+{
+    return nand_read(fd, buf, count);
+}
+
+ssize_t mtk_device_wrap_write(int fd, void *buf, size_t count)
+{
+    return nand_write(fd, buf, count);
+}
+
+
+#define ALIGN_LOWER(x, a) ((x)&~(a-1))
+
+struct nandx_split32 {
+    off_t  head;
+    size_t head_len;
+    off_t  body;
+    size_t body_len;
+    off_t  tail;
+    size_t tail_len;
+};
+
+static void nandx_split(struct nandx_split32 *split, off_t offset, size_t len, size_t align)
+{
+    size_t val;
+
+    split->head = offset;
+    val = ALIGN_LOWER(offset, align);
+    val = align - (offset - val);
+    if (val == align)
+        split->head_len = 0;
+    else if (val > len)
+        split->head_len = len;
+    else
+        split->head_len = val;
+
+    split->body = offset + split->head_len;
+    split->body_len = ALIGN_LOWER(len - split->head_len, align);
+
+    split->tail = split->body + split->body_len;
+    split->tail_len = len - split->head_len - split->body_len;
+}
+
+ssize_t mtk_device_wrap_write_force(int fd, void *buf, size_t count)
+{
+    struct nandx_split32 split = {0};
+    off_t offset, record_offset;
+    size_t block_size;
+    void* temp_buf;
+    size_t acc_count = 0;
+    size_t result;
+    size_t remain_count = count;
+    char* lbuf = buf;
+    int i=0;
+
+    offset = nand_query_offset(fd);
+    record_offset = offset + count;
+    block_size = nand_query_blk_size(fd);
+    if (block_size <= 0) {
+        printf("write_force wrong block size\n");
+        return 0;
+    }
+
+    //split head, body, and tail
+    nandx_split(&split, offset, count, block_size);
+
+    //allocate buffer
+    temp_buf = xmalloc(block_size);
+    if (temp_buf == NULL) {
+        printf("write_force alloc fail\n");
+        return 0;
+    }
+
+    //handle head
+    if (split.head_len) {
+        off_t head_base = ALIGN_LOWER(split.head, block_size);
+
+        // read the whole block
+        nand_seek(fd, head_base, SEEK_SET);
+        nand_read(fd, temp_buf, block_size);
+
+        //update the temp_buf
+        memcpy(temp_buf + offset - head_base, lbuf, split.head_len);
+
+        //write to flash
+        nand_seek(fd, head_base, SEEK_SET);
+        result = nand_write(fd, temp_buf, block_size);
+        if (result != block_size) {
+           printf("write_force head fail\n");
+           goto out;
+        }
+        acc_count += split.head_len;
+
+        //update
+        lbuf += split.head_len;
+    }
+
+    //handle body
+    if (split.body_len) {
+        nand_seek(fd, split.body, SEEK_SET);
+        result = nand_write(fd, lbuf, split.body_len);
+        if (result != split.body_len) {
+           printf("write_force body fail\n");
+           goto out;
+        }
+        acc_count += result;
+
+        //update
+        lbuf += split.body_len;
+    }
+
+    //handle tail
+    if (split.tail_len) {
+        // read the whole block
+        nand_seek(fd, split.tail, SEEK_SET);
+        nand_read(fd, temp_buf, block_size);
+
+        //update the temp_buf
+        memcpy(temp_buf, lbuf, split.tail_len);
+
+        //write to flash
+        nand_seek(fd, split.tail, SEEK_SET);
+        result = nand_write(fd, temp_buf, block_size);
+        if (result != block_size) {
+           printf("write_force tail fail\n");
+           goto out;
+        }
+        acc_count += split.tail_len;
+
+        //update
+        lbuf += split.tail_len;
+    }
+
+out:
+    nand_seek(fd, record_offset, SEEK_SET);
+
+    //free buffer
+    free(temp_buf);
+
+    return acc_count;
+}
+
+int mtk_device_wrap_close(int fd)
+{
+    return nand_close(fd);
+}
+
+#else
+
+int mtk_device_wrap_m_open(const char *pathname, int flags, mode_t mode)
+{
+    return open(pathname, flags, mode);
+}
+
+int mtk_device_wrap_open(const char *pathname, int flags)
+{
+    return open(pathname, flags);
+}
+
+off_t mtk_device_wrap_seek(int fd, off_t offset, int whence)
+{
+    return lseek(fd, offset, whence);
+}
+
+off64_t mtk_device_wrap_seek64(int fd, off64_t offset, int whence)
+{
+    return lseek64(fd, offset, whence);
+}
+
+ssize_t mtk_device_wrap_read(int fd, void *buf, size_t count)
+{
+    return read(fd, buf, count);
+}
+
+ssize_t mtk_device_wrap_write(int fd, void *buf, size_t count)
+{
+    return write(fd, buf, count);
+}
+
+ssize_t mtk_device_wrap_write_force(int fd, void *buf, size_t count)
+{
+    return write(fd, buf, count);
+}
+
+int mtk_device_wrap_close(int fd)
+{
+    return close(fd);
+}
+
+#endif
\ No newline at end of file
diff --git a/src/support/libnandapi/src/nand_api.c b/src/support/libnandapi/src/nand_api.c
new file mode 100644
index 0000000..d256a84
--- /dev/null
+++ b/src/support/libnandapi/src/nand_api.c
@@ -0,0 +1,399 @@
+#include <inttypes.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <getopt.h>
+#include <asm/types.h>
+#include <pthread.h>
+
+#include "../inc/nand_api.h"
+#include "../inc/common.h"
+#include "../inc/xalloc.h"
+#include "../inc/libmtd.h"
+
+struct nand_ops {
+	struct mtd_dev_info mtd;
+	unsigned int *eb_map;
+	unsigned int valid_eb_cnt;
+	int fd;
+	off_t offset;
+};
+
+/* As disscussed with upper user,
+ * the max number of files opened simultaneously is less than 10.
+ * consider to keep code simple,
+ * just define a array for saving files' objects.
+ */
+#define OPEN_FILES_MAX 10
+
+struct nand_handler {
+	libmtd_t mtd_desc;
+	struct nand_ops nops[OPEN_FILES_MAX];
+	int nops_count;
+	unsigned char *buf;
+	int eb_size;
+};
+
+static struct nand_handler nhandler;
+static pthread_mutex_t nmutex = PTHREAD_MUTEX_INITIALIZER;
+
+struct split_info {
+	off_t head;
+	size_t head_len;
+	off_t body;
+	size_t body_len;
+	off_t tail;
+	size_t tail_len;
+};
+
+static void data_split(struct split_info *split, off_t offset,
+			size_t len, unsigned int align)
+{
+	size_t val;
+
+	split->head = offset;
+	val = offset / align * align;
+	val = align - (offset - val);
+	if (val == align)
+		split->head_len = 0;
+	else if (val > len)
+		split->head_len = len;
+	else
+		split->head_len = val;
+
+	split->body = offset + split->head_len;
+	split->body_len = (len - split->head_len) / align * align;
+
+	split->tail = split->body + split->body_len;
+	split->tail_len = len - split->head_len - split->body_len;
+}
+
+static inline int offset_to_eb(off_t offset)
+{
+	return offset / nhandler.eb_size;
+}
+
+static inline int offset_to_eb_offset(off_t offset)
+{
+	return offset % nhandler.eb_size;
+}
+
+static inline unsigned int map_eb(unsigned int eb, int nops_idx)
+{
+	/* this case would be rarely appeared */
+	if (eb >= nhandler.nops[nops_idx].valid_eb_cnt)
+		printf("warning: the block maybe not valid\n");
+
+	return nhandler.nops[nops_idx].eb_map[eb];
+}
+
+static int create_eb_map(struct nand_ops *ops)
+{
+	int eb_cnt = 0;
+	int ret = 0, i;
+
+	ops->eb_map = xzalloc((size_t)ops->mtd.eb_cnt * 4);
+
+	for (i = 0; i < ops->mtd.eb_cnt; i++) {
+		ret = mtd_is_bad(&ops->mtd, ops->fd, i);
+		if (ret == 0)
+			ops->eb_map[eb_cnt++] = i;
+		else if (ret > 0)
+			printf("eb: %d is bad\n", i);
+		else
+			return ret;
+	}
+
+	ops->valid_eb_cnt = eb_cnt;
+	printf("valid eb count:%d\n", ops->valid_eb_cnt);
+
+	return ret;
+}
+
+static int get_current_ops(int fd)
+{
+	int i;
+
+	for (i = 0; i < OPEN_FILES_MAX; i++) {
+		if (nhandler.nops[i].fd == fd)
+			return i;
+	}
+
+	printf("Fail to get the file we want, there must be a error.\n");
+	/*it wouldn't reach here, no need to check if value returned is valid.*/
+	return -1;
+}
+
+static int get_empty_ops()
+{
+	int i;
+
+	for (i = 0; i < OPEN_FILES_MAX; i++) {
+		if (nhandler.nops[i].fd == 0)
+			return i;
+	}
+
+	printf("Fail to get an empty ops object, open too many files.\n");
+	return -1;
+}
+
+int nand_open(const char *pathname, int flags)
+{
+	struct mtd_dev_info *mtd;
+	int current, fd;
+	int ret = -1;
+
+	pthread_mutex_lock(&nmutex);
+
+	if (nhandler.nops_count == 0) {
+		nhandler.mtd_desc = libmtd_open();
+		if (!nhandler.mtd_desc) {
+			printf("libmtd initialize fail\n");
+			goto out;
+		}
+	}
+
+	fd = open(pathname, flags);
+	if (fd == -1) {
+		printf("open file: %s fail\n", pathname);
+		goto out;
+	}
+
+	current = get_empty_ops();
+	nhandler.nops[current].fd = fd;
+
+	mtd = &(nhandler.nops[current].mtd);
+	ret = mtd_get_dev_info(nhandler.mtd_desc, pathname, mtd);
+	if (ret < 0) {
+		printf("get mtd info fail\n");
+		goto out;
+	}
+
+	ret = create_eb_map(&(nhandler.nops[current]));
+	if (ret < 0) {
+		printf("check bad block fail\n");
+		goto out;
+	}
+
+	if (nhandler.nops_count == 0) {
+		nhandler.buf = xmalloc(mtd->eb_size);
+		nhandler.eb_size = mtd->eb_size;
+	}
+
+	ret = fd;
+	nhandler.nops_count++;
+
+out:
+	pthread_mutex_unlock(&nmutex);
+
+	return ret;
+}
+
+ssize_t nand_read(int fd, void *buf, size_t count)
+{
+	struct nand_ops *nops;
+	struct split_info split;
+	int eb, eb_cnt, eb_off;
+	char *lbuf = buf;
+	int current, ret, i;
+
+	current = get_current_ops(fd);
+	nops = &(nhandler.nops[current]);
+
+	data_split(&split, nops->offset, count, nops->mtd.eb_size);
+
+	if (split.head_len) {
+		eb = offset_to_eb(split.head);
+		eb_off = offset_to_eb_offset(split.head);
+
+		ret = mtd_read(&nops->mtd, fd, map_eb(eb, current), eb_off,
+			       lbuf, split.head_len);
+		if (ret < 0)
+			return ret;
+
+		lbuf += split.head_len;
+	}
+
+	if (split.body_len) {
+		eb = offset_to_eb(split.body);
+		eb_cnt = split.body_len / nops->mtd.eb_size;
+
+		for (i = 0; i < eb_cnt; i++) {
+			ret = mtd_read(&nops->mtd, fd, map_eb(eb + i, current),
+				       0, lbuf, nops->mtd.eb_size);
+			if (ret < 0)
+				return ret;
+
+			lbuf += nops->mtd.eb_size;
+		}
+
+	}
+
+	if (split.tail_len) {
+		eb = offset_to_eb(split.tail);
+
+		ret = mtd_read(&nops->mtd, fd, map_eb(eb, current), 0,
+			       lbuf, split.tail_len);
+		if (ret < 0)
+			return ret;
+	}
+
+	nops->offset += count;
+	return count;
+}
+
+/* $count must be page_size alligned */
+ssize_t nand_write(int fd, void *buf, size_t count)
+{
+	struct nand_ops *nops;
+	struct split_info split;
+	int eb, eb_cnt, eb_off;
+	char *lbuf = buf;
+	int current, ret, i;
+
+	current = get_current_ops(fd);
+	nops = &(nhandler.nops[current]);
+
+	data_split(&split, nops->offset, count, nops->mtd.eb_size);
+
+	if (split.head_len) {
+		eb = offset_to_eb(split.head);
+		eb_off = offset_to_eb_offset(split.head);
+
+		/* this eb should be already erased, so write directly */
+		ret = mtd_write(nhandler.mtd_desc, &nops->mtd, fd,
+				map_eb(eb, current), eb_off, lbuf,
+				split.head_len, NULL, 0, 0);
+		if (ret < 0)
+			return ret;
+
+		lbuf += split.head_len;
+	}
+
+	if (split.body_len) {
+		eb = offset_to_eb(split.body);
+		eb_cnt = split.body_len / nops->mtd.eb_size;
+
+		for (i = 0; i < eb_cnt; i++) {
+			ret = mtd_erase(nhandler.mtd_desc, &nops->mtd, fd,
+					map_eb(eb + i, current));
+			if (ret < 0)
+				return ret;
+
+			ret = mtd_write(nhandler.mtd_desc, &nops->mtd, fd,
+					map_eb(eb + i, current), 0, lbuf,
+					nops->mtd.eb_size, NULL, 0, 0);
+			if (ret < 0)
+				return ret;
+
+			lbuf += nops->mtd.eb_size;
+		}
+
+	}
+
+	if (split.tail_len) {
+		eb = offset_to_eb(split.tail);
+
+		ret = mtd_erase(nhandler.mtd_desc, &nops->mtd, fd,
+				map_eb(eb, current));
+		if (ret < 0)
+			return ret;
+
+		ret = mtd_write(nhandler.mtd_desc, &nops->mtd, fd,
+				map_eb(eb, current), 0, lbuf,
+				split.tail_len, NULL, 0, 0);
+		if (ret < 0)
+			return ret;
+	}
+
+	nops->offset += count;
+	return count;
+}
+
+off_t nand_seek(int fd, off_t offset, int whence)
+{
+	int current = get_current_ops(fd);
+
+	switch (whence) {
+	case SEEK_SET:
+		nhandler.nops[current].offset = offset;
+		break;
+
+	case SEEK_CUR:
+		nhandler.nops[current].offset += offset;
+		break;
+
+	case SEEK_END:
+	default:
+		printf("invalid perameter\n");
+		return -1;
+	}
+
+	return lseek(fd, nhandler.nops[current].offset, SEEK_SET);
+}
+
+off64_t nand_seek64(int fd, off64_t offset, int whence)
+{
+	return (off64_t)nand_seek(fd, (off_t)offset, whence);
+}
+
+int nand_close(int fd)
+{
+	int ret;
+	int current = get_current_ops(fd);
+
+	pthread_mutex_lock(&nmutex);
+
+	nhandler.nops_count--;
+
+	if (nhandler.nops_count == 0) {
+		libmtd_close(nhandler.mtd_desc);
+		free(nhandler.buf);
+	}
+
+	free(nhandler.nops[current].eb_map);
+	memset(&nhandler.nops[current], 0, sizeof(struct nand_ops));
+	ret = close(fd);
+
+	pthread_mutex_unlock(&nmutex);
+
+	return ret;
+}
+
+off_t nand_query_offset(int fd)
+{
+	int current = get_current_ops(fd);
+	struct nand_ops *nops;
+
+	if (current == -1) {
+		printf("nand_query_offset fail\n");
+		return 0;
+	}
+
+	nops = &(nhandler.nops[current]);
+	return nops->offset;
+}
+
+size_t nand_query_blk_size(int fd)
+{
+	int current = get_current_ops(fd);
+	struct nand_ops *nops;
+
+	if (current == -1) {
+		printf("nand_query_blk_size fail\n");
+		return 0;
+	}
+
+	nops = &(nhandler.nops[current]);
+	return nops->mtd.eb_size;
+}