diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c
index 88206d0..fc16282 100644
--- a/drivers/mtd/nand/nand_util.c
+++ b/drivers/mtd/nand/nand_util.c
@@ -315,7 +315,7 @@
  *			  NAND_LOCK_STATUS_UNLOCK: page unlocked
  *
  */
-int nand_get_lock_status(struct mtd_info *mtd, ulong offset)
+int nand_get_lock_status(struct mtd_info *mtd, loff_t offset)
 {
 	int ret = 0;
 	int chipnr;
@@ -436,7 +436,7 @@
  * @param length image length
  * @return image length including bad blocks
  */
-static size_t get_len_incl_bad (nand_info_t *nand, size_t offset,
+static size_t get_len_incl_bad (nand_info_t *nand, loff_t offset,
 				const size_t length)
 {
 	size_t len_incl_bad = 0;
@@ -473,7 +473,7 @@
  * @param buf           buffer to read from
  * @return		0 in case of success
  */
-int nand_write_skip_bad(nand_info_t *nand, size_t offset, size_t *length,
+int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
 			u_char *buffer)
 {
 	int rval;
@@ -498,7 +498,7 @@
 	if (len_incl_bad == *length) {
 		rval = nand_write (nand, offset, length, buffer);
 		if (rval != 0)
-			printf ("NAND write to offset %zx failed %d\n",
+			printf ("NAND write to offset %llx failed %d\n",
 				offset, rval);
 
 		return rval;
@@ -509,7 +509,7 @@
 		size_t write_size;
 
 		if (nand_block_isbad (nand, offset & ~(nand->erasesize - 1))) {
-			printf ("Skip bad block 0x%08zx\n",
+			printf ("Skip bad block 0x%08llx\n",
 				offset & ~(nand->erasesize - 1));
 			offset += nand->erasesize - block_offset;
 			continue;
@@ -522,7 +522,7 @@
 
 		rval = nand_write (nand, offset, &write_size, p_buffer);
 		if (rval != 0) {
-			printf ("NAND write to offset %zx failed %d\n",
+			printf ("NAND write to offset %llx failed %d\n",
 				offset, rval);
 			*length -= left_to_write;
 			return rval;
@@ -550,7 +550,7 @@
  * @param buffer buffer to write to
  * @return 0 in case of success
  */
-int nand_read_skip_bad(nand_info_t *nand, size_t offset, size_t *length,
+int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
 		       u_char *buffer)
 {
 	int rval;
@@ -568,7 +568,7 @@
 	if (len_incl_bad == *length) {
 		rval = nand_read (nand, offset, length, buffer);
 		if (rval != 0)
-			printf ("NAND read from offset %zx failed %d\n",
+			printf ("NAND read from offset %llx failed %d\n",
 				offset, rval);
 
 		return rval;
@@ -579,7 +579,7 @@
 		size_t read_length;
 
 		if (nand_block_isbad (nand, offset & ~(nand->erasesize - 1))) {
-			printf ("Skipping bad block 0x%08zx\n",
+			printf ("Skipping bad block 0x%08llx\n",
 				offset & ~(nand->erasesize - 1));
 			offset += nand->erasesize - block_offset;
 			continue;
@@ -592,7 +592,7 @@
 
 		rval = nand_read (nand, offset, &read_length, p_buffer);
 		if (rval != 0) {
-			printf ("NAND read from offset %zx failed %d\n",
+			printf ("NAND read from offset %llx failed %d\n",
 				offset, rval);
 			*length -= left_to_read;
 			return rval;
diff --git a/include/nand.h b/include/nand.h
index 065a42c..23f3ca1 100644
--- a/include/nand.h
+++ b/include/nand.h
@@ -38,22 +38,22 @@
 extern int nand_curr_device;
 extern nand_info_t nand_info[];
 
-static inline int nand_read(nand_info_t *info, off_t ofs, size_t *len, u_char *buf)
+static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
 {
 	return info->read(info, ofs, *len, (size_t *)len, buf);
 }
 
-static inline int nand_write(nand_info_t *info, off_t ofs, size_t *len, u_char *buf)
+static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
 {
 	return info->write(info, ofs, *len, (size_t *)len, buf);
 }
 
-static inline int nand_block_isbad(nand_info_t *info, off_t ofs)
+static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
 {
 	return info->block_isbad(info, ofs);
 }
 
-static inline int nand_erase(nand_info_t *info, off_t off, size_t size)
+static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
 {
 	struct erase_info instr;
 
@@ -110,9 +110,9 @@
 
 typedef struct nand_erase_options nand_erase_options_t;
 
-int nand_read_skip_bad(nand_info_t *nand, size_t offset, size_t *length,
+int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
 		       u_char *buffer);
-int nand_write_skip_bad(nand_info_t *nand, size_t offset, size_t *length,
+int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
 			u_char *buffer);
 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
 
@@ -122,7 +122,7 @@
 
 int nand_lock( nand_info_t *meminfo, int tight );
 int nand_unlock( nand_info_t *meminfo, ulong start, ulong length );
-int nand_get_lock_status(nand_info_t *meminfo, ulong offset);
+int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);
 
 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
 void board_nand_select_device(struct nand_chip *nand, int chip);