diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index b4e5376..6fb3718 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -42,6 +42,7 @@ ifdef NORMAL_DRIVERS
 obj-$(CONFIG_NAND_ECC_BCH) += nand_bch.o
 
 obj-$(CONFIG_NAND_ATMEL) += atmel_nand.o
+obj-$(CONFIG_NAND_ARASAN) += arasan_nfc.o
 obj-$(CONFIG_DRIVER_NAND_BFIN) += bfin_nand.o
 obj-$(CONFIG_NAND_DAVINCI) += davinci_nand.o
 obj-$(CONFIG_NAND_DENALI) += denali.o
diff --git a/drivers/mtd/nand/arasan_nfc.c b/drivers/mtd/nand/arasan_nfc.c
new file mode 100644
index 0000000..a697cce
--- /dev/null
+++ b/drivers/mtd/nand/arasan_nfc.c
@@ -0,0 +1,1173 @@
+/*
+ * Arasan NAND Flash Controller Driver
+ *
+ * Copyright (C) 2014 - 2015 Xilinx, Inc.
+ *
+ * SPDX-License-Identifier:     GPL-2.0
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand_ecc.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+#include <nand.h>
+
+struct arasan_nand_info {
+	void __iomem *nand_base;
+	u32 page;
+};
+
+struct nand_regs {
+	u32 pkt_reg;
+	u32 memadr_reg1;
+	u32 memadr_reg2;
+	u32 cmd_reg;
+	u32 pgm_reg;
+	u32 intsts_enr;
+	u32 intsig_enr;
+	u32 intsts_reg;
+	u32 rdy_busy;
+	u32 cms_sysadr_reg;
+	u32 flash_sts_reg;
+	u32 tmg_reg;
+	u32 buf_dataport;
+	u32 ecc_reg;
+	u32 ecc_errcnt_reg;
+	u32 ecc_sprcmd_reg;
+	u32 errcnt_1bitreg;
+	u32 errcnt_2bitreg;
+	u32 errcnt_3bitreg;
+	u32 errcnt_4bitreg;
+	u32 dma_sysadr0_reg;
+	u32 dma_bufbdry_reg;
+	u32 cpu_rls_reg;
+	u32 errcnt_5bitreg;
+	u32 errcnt_6bitreg;
+	u32 errcnt_7bitreg;
+	u32 errcnt_8bitreg;
+	u32 data_if_reg;
+};
+
+#define arasan_nand_base ((struct nand_regs __iomem*)ARASAN_NAND_BASEADDR)
+
+struct arasan_nand_command_format {
+	u8 cmd1;
+	u8 cmd2;
+	u8 addr_cycles;
+	u32 pgm;
+};
+
+#define ONDIE_ECC_FEATURE_ADDR			0x90
+
+#define ARASAN_PROG_RD_MASK			0x00000001
+#define ARASAN_PROG_BLK_ERS_MASK		0x00000004
+#define ARASAN_PROG_RD_ID_MASK			0x00000040
+#define ARASAN_PROG_RD_STS_MASK			0x00000008
+#define ARASAN_PROG_PG_PROG_MASK		0x00000010
+#define ARASAN_PROG_RD_PARAM_PG_MASK		0x00000080
+#define ARASAN_PROG_RST_MASK			0x00000100
+#define ARASAN_PROG_GET_FTRS_MASK		0x00000200
+#define ARASAN_PROG_SET_FTRS_MASK		0x00000400
+#define ARASAN_PROG_CHNG_ROWADR_END_MASK	0x00400000
+
+#define ARASAN_NAND_CMD_ECC_ON_MASK		0x80000000
+#define ARASAN_NAND_CMD_CMD12_MASK		0xFFFF
+#define ARASAN_NAND_CMD_PG_SIZE_MASK		0x3800000
+#define ARASAN_NAND_CMD_PG_SIZE_SHIFT		23
+#define ARASAN_NAND_CMD_CMD2_SHIFT		8
+#define ARASAN_NAND_CMD_ADDR_CYCL_MASK		0x70000000
+#define ARASAN_NAND_CMD_ADDR_CYCL_SHIFT		28
+
+#define ARASAN_NAND_MEM_ADDR1_PAGE_MASK		0xFFFF0000
+#define ARASAN_NAND_MEM_ADDR1_COL_MASK		0xFFFF
+#define ARASAN_NAND_MEM_ADDR1_PAGE_SHIFT	16
+#define ARASAN_NAND_MEM_ADDR2_PAGE_MASK		0xFF
+#define ARASAN_NAND_MEM_ADDR2_CS_MASK		0xC0000000
+#define ARASAN_NAND_MEM_ADDR2_BCH_MASK		0xE000000
+#define ARASAN_NAND_MEM_ADDR2_BCH_SHIFT		25
+
+#define ARASAN_NAND_INT_STS_ERR_EN_MASK		0x10
+#define ARASAN_NAND_INT_STS_MUL_BIT_ERR_MASK	0x08
+#define ARASAN_NAND_INT_STS_BUF_RD_RDY_MASK	0x02
+#define ARASAN_NAND_INT_STS_BUF_WR_RDY_MASK	0x01
+#define ARASAN_NAND_INT_STS_XFR_CMPLT_MASK	0x04
+
+#define ARASAN_NAND_PKT_REG_PKT_CNT_MASK	0xFFF000
+#define ARASAN_NAND_PKT_REG_PKT_SIZE_MASK	0x7FF
+#define ARASAN_NAND_PKT_REG_PKT_CNT_SHFT	12
+
+#define ARASAN_NAND_ROW_ADDR_CYCL_MASK		0x0F
+#define ARASAN_NAND_COL_ADDR_CYCL_MASK		0xF0
+#define ARASAN_NAND_COL_ADDR_CYCL_SHIFT		4
+
+#define ARASAN_NAND_PKTSIZE_1K			1024
+#define ARASAN_NAND_PKTSIZE_512			512
+
+#define ARASAN_NAND_POLL_TIMEOUT		1000000
+#define ARASAN_NAND_INVALID_ADDR_CYCL		0xFF
+
+#define ERR_ADDR_CYCLE				-1
+#define READ_BUFF_SIZE				0x4000
+
+static struct arasan_nand_command_format *curr_cmd;
+
+typedef enum {
+	NAND_ADDR_CYCL_NONE,
+	NAND_ADDR_CYCL_ONE,
+	NAND_ADDR_CYCL_ROW,
+	NAND_ADDR_CYCL_COL,
+	NAND_ADDR_CYCL_BOTH,
+} addr_cycles_t;
+
+static struct arasan_nand_command_format arasan_nand_commands[] = {
+	{NAND_CMD_READ0, NAND_CMD_READSTART, NAND_ADDR_CYCL_BOTH,
+	 ARASAN_PROG_RD_MASK},
+	{NAND_CMD_RNDOUT, NAND_CMD_RNDOUTSTART, NAND_ADDR_CYCL_COL,
+	 ARASAN_PROG_RD_MASK},
+	{NAND_CMD_READID, NAND_CMD_NONE, NAND_ADDR_CYCL_ONE,
+	 ARASAN_PROG_RD_ID_MASK},
+	{NAND_CMD_STATUS, NAND_CMD_NONE, NAND_ADDR_CYCL_NONE,
+	 ARASAN_PROG_RD_STS_MASK},
+	{NAND_CMD_SEQIN, NAND_CMD_PAGEPROG, NAND_ADDR_CYCL_BOTH,
+	 ARASAN_PROG_PG_PROG_MASK},
+	{NAND_CMD_RNDIN, NAND_CMD_NONE, NAND_ADDR_CYCL_COL,
+	 ARASAN_PROG_CHNG_ROWADR_END_MASK},
+	{NAND_CMD_ERASE1, NAND_CMD_ERASE2, NAND_ADDR_CYCL_ROW,
+	 ARASAN_PROG_BLK_ERS_MASK},
+	{NAND_CMD_RESET, NAND_CMD_NONE, NAND_ADDR_CYCL_NONE,
+	 ARASAN_PROG_RST_MASK},
+	{NAND_CMD_PARAM, NAND_CMD_NONE, NAND_ADDR_CYCL_ONE,
+	 ARASAN_PROG_RD_PARAM_PG_MASK},
+	{NAND_CMD_GET_FEATURES, NAND_CMD_NONE, NAND_ADDR_CYCL_ONE,
+	 ARASAN_PROG_GET_FTRS_MASK},
+	{NAND_CMD_SET_FEATURES, NAND_CMD_NONE, NAND_ADDR_CYCL_ONE,
+	 ARASAN_PROG_SET_FTRS_MASK},
+	{NAND_CMD_NONE, NAND_CMD_NONE, NAND_ADDR_CYCL_NONE, 0},
+};
+
+struct arasan_ecc_matrix {
+	u32 pagesize;
+	u8 ecc_codeword_size;
+	u8 eccbits;
+	u8 slcmlc;
+	u16 eccaddr;
+	u16 eccsize;
+};
+
+static const struct arasan_ecc_matrix ecc_matrix[] = {
+	{512, 9, 1, 0, 0x20D, 0x3},
+	{512, 9, 4, 1, 0x209, 0x7},
+	{512, 9, 8, 1, 0x203, 0xD},
+	/*
+	 * 2K byte page
+	 */
+	{2048, 9, 1, 0, 0x834, 0xC},
+	{2048, 9, 4, 1, 0x826, 0x1A},
+	{2048, 9, 8, 1, 0x80c, 0x34},
+	{2048, 9, 12, 1, 0x822, 0x4E},
+	{2048, 9, 16, 1, 0x808, 0x68},
+	{2048, 10, 24, 1, 0x81c, 0x54},
+	/*
+	 * 4K byte page
+	 */
+	{4096, 9, 1, 0, 0x1068, 0x18},
+	{4096, 9, 4, 1, 0x104c, 0x34},
+	{4096, 9, 8, 1, 0x1018, 0x68},
+	{4096, 9, 12, 1, 0x1044, 0x9C},
+	{4096, 9, 16, 1, 0x1010, 0xD0},
+	{4096, 10, 24, 1, 0x1038, 0xA8},
+	/*
+	 * 8K byte page
+	 */
+	{8192, 9, 1, 0, 0x20d0, 0x30},
+	{8192, 9, 4, 1, 0x2098, 0x68},
+	{8192, 9, 8, 1, 0x2030, 0xD0},
+	{8192, 9, 12, 1, 0x2088, 0x138},
+	{8192, 9, 16, 1, 0x2020, 0x1A0},
+	{8192, 24, 10, 1, 0x2070, 0x150},
+	/*
+	 * 16K byte page
+	 */
+	{16384, 9, 1, 0, 0x4460, 0x60},
+	{16384, 9, 4, 1, 0x43f0, 0xD0},
+	{16384, 9, 8, 1, 0x4320, 0x1A0},
+	{16384, 9, 12, 1, 0x4250, 0x270},
+	{16384, 9, 16, 1, 0x4180, 0x340},
+	{16384, 10, 24, 1, 0x4220, 0x2A0}
+};
+
+static u8 buf_data[READ_BUFF_SIZE];
+static u32 buf_index = 0;
+
+static struct nand_ecclayout nand_oob;
+
+static struct nand_chip nand_chip[CONFIG_SYS_MAX_NAND_DEVICE];
+
+static void arasan_nand_select_chip(struct mtd_info *mtd, int chip)
+{
+}
+
+static void arasan_nand_enable_ecc(void)
+{
+	u32 reg_val;
+
+	reg_val = readl(&arasan_nand_base->cmd_reg);
+	reg_val |= ARASAN_NAND_CMD_ECC_ON_MASK;
+
+	writel(reg_val, &arasan_nand_base->cmd_reg);
+}
+
+static u8 arasan_nand_get_addrcycle(struct mtd_info *mtd)
+{
+	u8 addrcycles;
+	struct nand_chip *chip = mtd->priv;
+
+	switch (curr_cmd->addr_cycles) {
+	case NAND_ADDR_CYCL_NONE:
+		addrcycles = 0;
+		break;
+	case NAND_ADDR_CYCL_ONE:
+		addrcycles = 1;
+		break;
+	case NAND_ADDR_CYCL_ROW:
+		addrcycles = chip->onfi_params.addr_cycles &
+			     ARASAN_NAND_ROW_ADDR_CYCL_MASK;
+		break;
+	case NAND_ADDR_CYCL_COL:
+		addrcycles = (chip->onfi_params.addr_cycles &
+			      ARASAN_NAND_COL_ADDR_CYCL_MASK) >>
+			      ARASAN_NAND_COL_ADDR_CYCL_SHIFT;
+		break;
+	case NAND_ADDR_CYCL_BOTH:
+		addrcycles = chip->onfi_params.addr_cycles &
+			     ARASAN_NAND_ROW_ADDR_CYCL_MASK;
+		addrcycles += (chip->onfi_params.addr_cycles &
+			       ARASAN_NAND_COL_ADDR_CYCL_MASK) >>
+			       ARASAN_NAND_COL_ADDR_CYCL_SHIFT;
+		break;
+	default:
+		addrcycles = ARASAN_NAND_INVALID_ADDR_CYCL;
+		break;
+	}
+	return addrcycles;
+}
+
+static int arasan_nand_read_page(struct mtd_info *mtd, u8 *buf, u32 size)
+{
+	struct nand_chip *chip = mtd->priv;
+	u32 reg_val, i, pktsize, pktnum;
+	u32 *bufptr = (u32 *)buf;
+	u32 timeout;
+	u32  rdcount = 0;
+	u8 addr_cycles;
+
+	if (chip->ecc_step_ds >= ARASAN_NAND_PKTSIZE_1K)
+		pktsize = ARASAN_NAND_PKTSIZE_1K;
+	else
+		pktsize = ARASAN_NAND_PKTSIZE_512;
+
+	if (size % pktsize)
+		pktnum = size/pktsize + 1;
+	else
+		pktnum = size/pktsize;
+
+	reg_val = readl(&arasan_nand_base->intsts_enr);
+	reg_val |= ARASAN_NAND_INT_STS_ERR_EN_MASK |
+		   ARASAN_NAND_INT_STS_MUL_BIT_ERR_MASK;
+	writel(reg_val, &arasan_nand_base->intsts_enr);
+
+	reg_val = readl(&arasan_nand_base->pkt_reg);
+	reg_val &= ~(ARASAN_NAND_PKT_REG_PKT_CNT_MASK |
+		     ARASAN_NAND_PKT_REG_PKT_SIZE_MASK);
+	reg_val |= (pktnum << ARASAN_NAND_PKT_REG_PKT_CNT_SHFT) |
+		    pktsize;
+	writel(reg_val, &arasan_nand_base->pkt_reg);
+
+	arasan_nand_enable_ecc();
+	addr_cycles = arasan_nand_get_addrcycle(mtd);
+	if (addr_cycles == ARASAN_NAND_INVALID_ADDR_CYCL)
+		return ERR_ADDR_CYCLE;
+
+	writel((NAND_CMD_RNDOUTSTART << ARASAN_NAND_CMD_CMD2_SHIFT) |
+	       NAND_CMD_RNDOUT |(addr_cycles <<
+	       ARASAN_NAND_CMD_ADDR_CYCL_SHIFT),
+	       &arasan_nand_base->ecc_sprcmd_reg);
+	writel(curr_cmd->pgm, &arasan_nand_base->pgm_reg);
+
+	while (rdcount < pktnum) {
+		timeout = ARASAN_NAND_POLL_TIMEOUT;
+		while (!(readl(&arasan_nand_base->intsts_reg) &
+			ARASAN_NAND_INT_STS_BUF_RD_RDY_MASK) && timeout) {
+			udelay(1);
+			timeout--;
+		}
+		if (!timeout) {
+			puts("arasan_read_page: timedout:Buff RDY\n");
+			return -ETIMEDOUT;
+		}
+
+		rdcount++;
+
+		if (pktnum == rdcount) {
+			reg_val = readl(&arasan_nand_base->intsts_enr);
+			reg_val |= ARASAN_NAND_INT_STS_XFR_CMPLT_MASK;
+			writel(reg_val, &arasan_nand_base->intsts_enr);
+		} else {
+			reg_val = readl(&arasan_nand_base->intsts_enr);
+			writel(reg_val | ARASAN_NAND_INT_STS_BUF_RD_RDY_MASK,
+			       &arasan_nand_base->intsts_enr);
+		}
+		reg_val = readl(&arasan_nand_base->intsts_reg);
+		writel(reg_val | ARASAN_NAND_INT_STS_BUF_RD_RDY_MASK,
+		       &arasan_nand_base->intsts_reg);
+
+		for (i = 0; i < pktsize/4; i++)
+			bufptr[i] = readl(&arasan_nand_base->buf_dataport);
+
+
+		bufptr += pktsize/4;
+
+		if (rdcount >= pktnum)
+			break;
+
+		writel(ARASAN_NAND_INT_STS_BUF_RD_RDY_MASK,
+		       &arasan_nand_base->intsts_enr);
+	}
+
+	timeout = ARASAN_NAND_POLL_TIMEOUT;
+
+	while (!(readl(&arasan_nand_base->intsts_reg) &
+		ARASAN_NAND_INT_STS_XFR_CMPLT_MASK) && timeout) {
+		udelay(1);
+		timeout--;
+	}
+	if (!timeout) {
+		puts("arasan rd_page timedout:Xfer CMPLT\n");
+		return -ETIMEDOUT;
+	}
+
+	reg_val = readl(&arasan_nand_base->intsts_enr);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->intsts_reg);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_reg);
+
+	if (readl(&arasan_nand_base->intsts_reg) &
+	    ARASAN_NAND_INT_STS_MUL_BIT_ERR_MASK) {
+		printf("arasan rd_page:sbiterror\n");
+		return -1;
+	}
+
+	if (readl(&arasan_nand_base->intsts_reg) &
+	    ARASAN_NAND_INT_STS_ERR_EN_MASK) {
+		mtd->ecc_stats.failed++;
+		printf("arasan rd_page:multibiterror\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static int arasan_nand_read_page_hwecc(struct mtd_info *mtd,
+		struct nand_chip *chip, u8 *buf, int oob_required, int page)
+{
+	int status;
+
+	status = arasan_nand_read_page(mtd, buf, (mtd->writesize));
+
+	if (oob_required)
+		chip->ecc.read_oob(mtd, chip, page);
+
+	return status;
+}
+
+static void arasan_nand_fill_tx(const u8 *buf, int len)
+{
+	u32 __iomem *nand = (u32 __iomem *)&arasan_nand_base->buf_dataport;
+
+	if (((unsigned long)buf & 0x3) != 0) {
+		if (((unsigned long)buf & 0x1) != 0) {
+			if (len) {
+				writeb(*buf, nand);
+				buf += 1;
+				len--;
+			}
+		}
+
+		if (((unsigned long)buf & 0x3) != 0) {
+			if (len >= 2) {
+				writew(*(u16 *)buf, nand);
+				buf += 2;
+				len -= 2;
+			}
+		}
+	}
+
+	while (len >= 4) {
+		writel(*(u32 *)buf, nand);
+		buf += 4;
+		len -= 4;
+	}
+
+	if (len) {
+		if (len >= 2) {
+			writew(*(u16 *)buf, nand);
+			buf += 2;
+			len -= 2;
+		}
+
+		if (len)
+			writeb(*buf, nand);
+	}
+}
+
+static int arasan_nand_write_page_hwecc(struct mtd_info *mtd,
+		struct nand_chip *chip, const u8 *buf, int oob_required)
+{
+	u32 reg_val, i, pktsize, pktnum;
+	const u32 *bufptr = (u32 *)buf;
+	u32 timeout = ARASAN_NAND_POLL_TIMEOUT;
+	u32 size = mtd->writesize;
+	u32 rdcount = 0;
+	u8 column_addr_cycles;
+	struct arasan_nand_info *nand = chip->priv;
+
+	if (chip->ecc_step_ds >= ARASAN_NAND_PKTSIZE_1K)
+		pktsize = ARASAN_NAND_PKTSIZE_1K;
+	else
+		pktsize = ARASAN_NAND_PKTSIZE_512;
+
+	if (size % pktsize)
+		pktnum = size/pktsize + 1;
+	else
+		pktnum = size/pktsize;
+
+	reg_val = readl(&arasan_nand_base->pkt_reg);
+	reg_val &= ~(ARASAN_NAND_PKT_REG_PKT_CNT_MASK |
+		     ARASAN_NAND_PKT_REG_PKT_SIZE_MASK);
+	reg_val |= (pktnum << ARASAN_NAND_PKT_REG_PKT_CNT_SHFT) | pktsize;
+	writel(reg_val, &arasan_nand_base->pkt_reg);
+
+	arasan_nand_enable_ecc();
+	column_addr_cycles = (chip->onfi_params.addr_cycles &
+			      ARASAN_NAND_COL_ADDR_CYCL_MASK) >>
+			      ARASAN_NAND_COL_ADDR_CYCL_SHIFT;
+	writel((NAND_CMD_RNDIN | (column_addr_cycles << 28)),
+	       &arasan_nand_base->ecc_sprcmd_reg);
+	writel(curr_cmd->pgm, &arasan_nand_base->pgm_reg);
+
+	while (rdcount < pktnum) {
+		timeout = ARASAN_NAND_POLL_TIMEOUT;
+		while (!(readl(&arasan_nand_base->intsts_reg) &
+			ARASAN_NAND_INT_STS_BUF_WR_RDY_MASK) && timeout) {
+			udelay(1);
+			timeout--;
+		}
+
+		if (!timeout) {
+			puts("arasan_write_page: timedout:Buff RDY\n");
+			return -ETIMEDOUT;
+		}
+
+		rdcount++;
+
+		if (pktnum == rdcount) {
+			reg_val = readl(&arasan_nand_base->intsts_enr);
+			reg_val |= ARASAN_NAND_INT_STS_XFR_CMPLT_MASK;
+			writel(reg_val, &arasan_nand_base->intsts_enr);
+		} else {
+			reg_val = readl(&arasan_nand_base->intsts_enr);
+			writel(reg_val | ARASAN_NAND_INT_STS_BUF_WR_RDY_MASK,
+			       &arasan_nand_base->intsts_enr);
+		}
+
+		reg_val = readl(&arasan_nand_base->intsts_reg);
+		writel(reg_val | ARASAN_NAND_INT_STS_BUF_WR_RDY_MASK,
+		       &arasan_nand_base->intsts_reg);
+
+		for (i = 0; i < pktsize/4; i++)
+			writel(bufptr[i], &arasan_nand_base->buf_dataport);
+
+		bufptr += pktsize/4;
+
+		if (rdcount >= pktnum)
+			break;
+
+		writel(ARASAN_NAND_INT_STS_BUF_WR_RDY_MASK,
+		       &arasan_nand_base->intsts_enr);
+	}
+
+	timeout = ARASAN_NAND_POLL_TIMEOUT;
+
+	while (!(readl(&arasan_nand_base->intsts_reg) &
+		ARASAN_NAND_INT_STS_XFR_CMPLT_MASK) && timeout) {
+		udelay(1);
+		timeout--;
+	}
+	if (!timeout) {
+		puts("arasan write_page timedout:Xfer CMPLT\n");
+		return -ETIMEDOUT;
+	}
+
+	reg_val = readl(&arasan_nand_base->intsts_enr);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->intsts_reg);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_reg);
+
+	if (oob_required)
+		chip->ecc.write_oob(mtd, chip, nand->page);
+
+	return 0;
+}
+
+static int arasan_nand_read_oob(struct mtd_info *mtd, struct nand_chip *chip,
+				int page)
+{
+	chip->cmdfunc(mtd, NAND_CMD_READOOB, 0, page);
+	chip->read_buf(mtd, chip->oob_poi, (mtd->oobsize));
+
+	return 0;
+}
+
+static int arasan_nand_write_oob(struct mtd_info *mtd, struct nand_chip *chip,
+				 int page)
+{
+	int status = 0;
+	const u8 *buf = chip->oob_poi;
+
+	chip->cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, page);
+	chip->write_buf(mtd, buf, mtd->oobsize);
+
+	return status;
+}
+
+static int arasan_nand_reset(struct arasan_nand_command_format *curr_cmd)
+{
+	u32 timeout = ARASAN_NAND_POLL_TIMEOUT;
+	u32 cmd_reg = 0;
+
+	writel(ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+	cmd_reg = readl(&arasan_nand_base->cmd_reg);
+	cmd_reg &= ~ARASAN_NAND_CMD_CMD12_MASK;
+
+	cmd_reg |= curr_cmd->cmd1 |
+		  (curr_cmd->cmd2 << ARASAN_NAND_CMD_CMD2_SHIFT);
+	writel(cmd_reg, &arasan_nand_base->cmd_reg);
+	writel(curr_cmd->pgm, &arasan_nand_base->pgm_reg);
+
+	while (!(readl(&arasan_nand_base->intsts_reg) &
+		ARASAN_NAND_INT_STS_XFR_CMPLT_MASK) && timeout) {
+		udelay(1);
+		timeout--;
+	}
+	if (!timeout) {
+		printf("ERROR:%s timedout\n", __func__);
+		return -ETIMEDOUT;
+	}
+
+	writel(ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+
+	writel(ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_reg);
+
+	return 0;
+}
+
+static u8 arasan_nand_page(struct mtd_info *mtd)
+{
+	u8 page_val = 0;
+
+	switch (mtd->writesize) {
+	case 512:
+		page_val = 0;
+		break;
+	case 2048:
+		page_val = 1;
+		break;
+	case 4096:
+		page_val = 2;
+		break;
+	case 8192:
+		page_val = 3;
+		break;
+	case 16384:
+		page_val = 4;
+		break;
+	case 1024:
+		page_val = 5;
+		break;
+	default:
+		printf("%s:Pagesize>16K\n",__func__);
+		break;
+	}
+
+	return page_val;
+}
+
+static int arasan_nand_send_wrcmd(struct arasan_nand_command_format *curr_cmd,
+			int column, int page_addr, struct mtd_info *mtd)
+{
+	u32 reg_val, page;
+	u8 page_val, addr_cycles;
+
+	writel(ARASAN_NAND_INT_STS_BUF_WR_RDY_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->cmd_reg);
+	reg_val &= ~ARASAN_NAND_CMD_CMD12_MASK;
+	reg_val |= curr_cmd->cmd1 |
+		   (curr_cmd->cmd2 << ARASAN_NAND_CMD_CMD2_SHIFT);
+	if (curr_cmd->cmd1 == NAND_CMD_SEQIN) {
+		reg_val &= ~ARASAN_NAND_CMD_PG_SIZE_MASK;
+		page_val = arasan_nand_page(mtd);
+		reg_val |= (page_val << ARASAN_NAND_CMD_PG_SIZE_SHIFT);
+	}
+
+	reg_val &= ~ARASAN_NAND_CMD_ADDR_CYCL_MASK;
+	addr_cycles = arasan_nand_get_addrcycle(mtd);
+
+	if(addr_cycles == ARASAN_NAND_INVALID_ADDR_CYCL)
+		return ERR_ADDR_CYCLE;
+
+	reg_val |= (addr_cycles <<
+		   ARASAN_NAND_CMD_ADDR_CYCL_SHIFT);
+	writel(reg_val, &arasan_nand_base->cmd_reg);
+
+	if (page_addr == -1)
+		page_addr = 0;
+
+	page = (page_addr << ARASAN_NAND_MEM_ADDR1_PAGE_SHIFT) &
+		ARASAN_NAND_MEM_ADDR1_PAGE_MASK;
+	column &= ARASAN_NAND_MEM_ADDR1_COL_MASK;
+	writel(page|column, &arasan_nand_base->memadr_reg1);
+
+	reg_val = readl(&arasan_nand_base->memadr_reg2);
+	reg_val &= ~ARASAN_NAND_MEM_ADDR2_PAGE_MASK;
+	reg_val |= (page_addr >> ARASAN_NAND_MEM_ADDR1_PAGE_SHIFT);
+	writel(reg_val, &arasan_nand_base->memadr_reg2);
+	reg_val = readl(&arasan_nand_base->memadr_reg2);
+	reg_val &= ~ARASAN_NAND_MEM_ADDR2_CS_MASK;
+	writel(reg_val, &arasan_nand_base->memadr_reg2);
+
+	return 0;
+}
+
+static void arasan_nand_write_buf(struct mtd_info *mtd, const u8 *buf, int len)
+{
+	u32 reg_val;
+	u32 timeout = ARASAN_NAND_POLL_TIMEOUT;
+
+	reg_val = readl(&arasan_nand_base->pkt_reg);
+	reg_val &= ~(ARASAN_NAND_PKT_REG_PKT_CNT_MASK |
+		     ARASAN_NAND_PKT_REG_PKT_SIZE_MASK);
+
+	reg_val |= (1 << ARASAN_NAND_PKT_REG_PKT_CNT_SHFT) | len;
+	writel(reg_val, &arasan_nand_base->pkt_reg);
+	writel(curr_cmd->pgm, &arasan_nand_base->pgm_reg);
+
+	while (!(readl(&arasan_nand_base->intsts_reg) &
+		ARASAN_NAND_INT_STS_BUF_WR_RDY_MASK) && timeout) {
+		udelay(1);
+		timeout--;
+	}
+
+	if (!timeout)
+		puts("ERROR:arasan_nand_write_buf timedout:Buff RDY\n");
+
+	reg_val = readl(&arasan_nand_base->intsts_enr);
+	reg_val |= ARASAN_NAND_INT_STS_XFR_CMPLT_MASK;
+	writel(reg_val, &arasan_nand_base->intsts_enr);
+	writel(reg_val | ARASAN_NAND_INT_STS_BUF_WR_RDY_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->intsts_reg);
+	writel(reg_val | ARASAN_NAND_INT_STS_BUF_WR_RDY_MASK,
+	       &arasan_nand_base->intsts_reg);
+
+	arasan_nand_fill_tx(buf, len);
+
+	timeout = ARASAN_NAND_POLL_TIMEOUT;
+	while (!(readl(&arasan_nand_base->intsts_reg) &
+		ARASAN_NAND_INT_STS_XFR_CMPLT_MASK) && timeout) {
+		udelay(1);
+		timeout--;
+	}
+	if (!timeout)
+		puts("ERROR:arasan_nand_write_buf timedout:Xfer CMPLT\n");
+
+	writel(readl(&arasan_nand_base->intsts_enr) |
+	       ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+	writel(readl(&arasan_nand_base->intsts_reg) |
+	       ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_reg);
+}
+
+static int arasan_nand_erase(struct arasan_nand_command_format *curr_cmd,
+			      int column, int page_addr, struct mtd_info *mtd)
+{
+	u32 reg_val, page;
+	u32 timeout = ARASAN_NAND_POLL_TIMEOUT;
+	u8 row_addr_cycles;
+
+	writel(ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->cmd_reg);
+	reg_val &= ~ARASAN_NAND_CMD_CMD12_MASK;
+	reg_val |= curr_cmd->cmd1 |
+		   (curr_cmd->cmd2 << ARASAN_NAND_CMD_CMD2_SHIFT);
+	row_addr_cycles = arasan_nand_get_addrcycle(mtd);
+
+	if (row_addr_cycles == ARASAN_NAND_INVALID_ADDR_CYCL)
+		return ERR_ADDR_CYCLE;
+
+	reg_val &= ~ARASAN_NAND_CMD_ADDR_CYCL_MASK;
+	reg_val |= (row_addr_cycles <<
+		    ARASAN_NAND_CMD_ADDR_CYCL_SHIFT);
+
+	writel(reg_val, &arasan_nand_base->cmd_reg);
+
+	page = (page_addr << ARASAN_NAND_MEM_ADDR1_PAGE_SHIFT) &
+		ARASAN_NAND_MEM_ADDR1_PAGE_MASK;
+	column = page_addr & ARASAN_NAND_MEM_ADDR1_COL_MASK;
+	writel(page | column, &arasan_nand_base->memadr_reg1);
+
+	reg_val = readl(&arasan_nand_base->memadr_reg2);
+	reg_val &= ~ARASAN_NAND_MEM_ADDR2_PAGE_MASK;
+	reg_val |= (page_addr >> ARASAN_NAND_MEM_ADDR1_PAGE_SHIFT);
+	writel(reg_val, &arasan_nand_base->memadr_reg2);
+	reg_val = readl(&arasan_nand_base->memadr_reg2);
+	reg_val &= ~ARASAN_NAND_MEM_ADDR2_CS_MASK;
+	writel(reg_val, &arasan_nand_base->memadr_reg2);
+	writel(curr_cmd->pgm, &arasan_nand_base->pgm_reg);
+
+	while (!(readl(&arasan_nand_base->intsts_reg) &
+		ARASAN_NAND_INT_STS_XFR_CMPLT_MASK) && timeout) {
+		udelay(1);
+		timeout--;
+	}
+	if (!timeout) {
+		printf("ERROR:%s timedout:Xfer CMPLT\n",__func__);
+		return -ETIMEDOUT;
+	}
+
+	reg_val = readl(&arasan_nand_base->intsts_enr);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->intsts_reg);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_reg);
+
+	return 0;
+}
+
+static int arasan_nand_read_status(struct arasan_nand_command_format *curr_cmd,
+				int column, int page_addr, struct mtd_info *mtd)
+{
+	u32 reg_val;
+	u32 timeout = ARASAN_NAND_POLL_TIMEOUT;
+	u8 addr_cycles;
+
+	writel(ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->cmd_reg);
+	reg_val &= ~ARASAN_NAND_CMD_CMD12_MASK;
+	reg_val |= curr_cmd->cmd1 |
+		   (curr_cmd->cmd2 << ARASAN_NAND_CMD_CMD2_SHIFT);
+	addr_cycles = arasan_nand_get_addrcycle(mtd);
+
+	if (addr_cycles == ARASAN_NAND_INVALID_ADDR_CYCL)
+		return ERR_ADDR_CYCLE;
+
+	reg_val &= ~ARASAN_NAND_CMD_ADDR_CYCL_MASK;
+	reg_val |= (addr_cycles <<
+		    ARASAN_NAND_CMD_ADDR_CYCL_SHIFT);
+
+	writel(reg_val, &arasan_nand_base->cmd_reg);
+
+	reg_val = readl(&arasan_nand_base->pkt_reg);
+	reg_val &= ~(ARASAN_NAND_PKT_REG_PKT_CNT_MASK |
+		     ARASAN_NAND_PKT_REG_PKT_SIZE_MASK);
+	reg_val |= (1 << ARASAN_NAND_PKT_REG_PKT_CNT_SHFT) | 1;
+	writel(reg_val, &arasan_nand_base->pkt_reg);
+
+	reg_val = readl(&arasan_nand_base->memadr_reg2);
+	reg_val &= ~ARASAN_NAND_MEM_ADDR2_CS_MASK;
+	writel(reg_val, &arasan_nand_base->memadr_reg2);
+
+	writel(curr_cmd->pgm, &arasan_nand_base->pgm_reg);
+	while (!(readl(&arasan_nand_base->intsts_reg) &
+		ARASAN_NAND_INT_STS_XFR_CMPLT_MASK) && timeout) {
+		udelay(1);
+		timeout--;
+	}
+
+	if (!timeout) {
+		printf("ERROR:%s: timedout:Xfer CMPLT\n", __func__);
+		return -ETIMEDOUT;
+	}
+
+	reg_val = readl(&arasan_nand_base->intsts_enr);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->intsts_reg);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_reg);
+
+	return 0;
+}
+
+static int arasan_nand_send_rdcmd(struct arasan_nand_command_format *curr_cmd,
+			       int column, int page_addr, struct mtd_info *mtd)
+{
+	u32 reg_val, addr_cycles, page;
+	u8 page_val;
+
+	reg_val = readl(&arasan_nand_base->intsts_enr);
+	writel(reg_val | ARASAN_NAND_INT_STS_BUF_RD_RDY_MASK,
+	       &arasan_nand_base->intsts_enr);
+
+	reg_val = readl(&arasan_nand_base->cmd_reg);
+	reg_val &= ~ARASAN_NAND_CMD_CMD12_MASK;
+	reg_val |= curr_cmd->cmd1 |
+		   (curr_cmd->cmd2 << ARASAN_NAND_CMD_CMD2_SHIFT);
+
+	if (curr_cmd->cmd1 == NAND_CMD_RNDOUT ||
+	    curr_cmd->cmd1 == NAND_CMD_READ0) {
+		reg_val &= ~ARASAN_NAND_CMD_PG_SIZE_MASK;
+		page_val = arasan_nand_page(mtd);
+		reg_val |= (page_val << ARASAN_NAND_CMD_PG_SIZE_SHIFT);
+	}
+
+	reg_val &= ~ARASAN_NAND_CMD_ADDR_CYCL_MASK;
+
+	addr_cycles = arasan_nand_get_addrcycle(mtd);
+
+	if (addr_cycles == ARASAN_NAND_INVALID_ADDR_CYCL)
+		return ERR_ADDR_CYCLE;
+
+	reg_val |= (addr_cycles << 28);
+	writel(reg_val, &arasan_nand_base->cmd_reg);
+
+	if (page_addr == -1)
+		page_addr = 0;
+
+	page = (page_addr << ARASAN_NAND_MEM_ADDR1_PAGE_SHIFT) &
+		ARASAN_NAND_MEM_ADDR1_PAGE_MASK;
+	column &= ARASAN_NAND_MEM_ADDR1_COL_MASK;
+	writel(page | column, &arasan_nand_base->memadr_reg1);
+
+	reg_val = readl(&arasan_nand_base->memadr_reg2);
+	reg_val &= ~ARASAN_NAND_MEM_ADDR2_PAGE_MASK;
+	reg_val |= (page_addr >> ARASAN_NAND_MEM_ADDR1_PAGE_SHIFT);
+	writel(reg_val, &arasan_nand_base->memadr_reg2);
+
+	reg_val = readl(&arasan_nand_base->memadr_reg2);
+	reg_val &= ~ARASAN_NAND_MEM_ADDR2_CS_MASK;
+	writel(reg_val, &arasan_nand_base->memadr_reg2);
+	buf_index = 0;
+
+	return 0;
+}
+
+static void arasan_nand_read_buf(struct mtd_info *mtd, u8 *buf, int size)
+{
+	u32 reg_val, i;
+	u32 *bufptr = (u32 *)buf;
+	u32 timeout = ARASAN_NAND_POLL_TIMEOUT;
+
+	reg_val = readl(&arasan_nand_base->pkt_reg);
+	reg_val &= ~(ARASAN_NAND_PKT_REG_PKT_CNT_MASK |
+		     ARASAN_NAND_PKT_REG_PKT_SIZE_MASK);
+	reg_val |= (1 << ARASAN_NAND_PKT_REG_PKT_CNT_SHFT) | size;
+	writel(reg_val, &arasan_nand_base->pkt_reg);
+
+	writel(curr_cmd->pgm, &arasan_nand_base->pgm_reg);
+
+	while (!(readl(&arasan_nand_base->intsts_reg) &
+		ARASAN_NAND_INT_STS_BUF_RD_RDY_MASK) && timeout) {
+		udelay(1);
+		timeout--;
+	}
+
+	if (!timeout)
+		puts("ERROR:arasan_nand_read_buf timedout:Buff RDY\n");
+
+	reg_val = readl(&arasan_nand_base->intsts_enr);
+	reg_val |= ARASAN_NAND_INT_STS_XFR_CMPLT_MASK;
+	writel(reg_val, &arasan_nand_base->intsts_enr);
+
+	writel(reg_val | ARASAN_NAND_INT_STS_BUF_RD_RDY_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->intsts_reg);
+	writel(reg_val | ARASAN_NAND_INT_STS_BUF_RD_RDY_MASK,
+	       &arasan_nand_base->intsts_reg);
+
+	buf_index = 0;
+	for (i = 0; i < size / 4; i++)
+		bufptr[i] = readl(&arasan_nand_base->buf_dataport);
+
+	if (size & 0x03)
+		bufptr[i] = readl(&arasan_nand_base->buf_dataport);
+
+	timeout = ARASAN_NAND_POLL_TIMEOUT;
+
+	while (!(readl(&arasan_nand_base->intsts_reg) &
+		ARASAN_NAND_INT_STS_XFR_CMPLT_MASK) && timeout) {
+		udelay(1);
+		timeout--;
+	}
+
+	if (!timeout)
+		puts("ERROR:arasan_nand_read_buf timedout:Xfer CMPLT\n");
+
+	reg_val = readl(&arasan_nand_base->intsts_enr);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+	reg_val = readl(&arasan_nand_base->intsts_reg);
+	writel(reg_val | ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_reg);
+}
+
+static u8 arasan_nand_read_byte(struct mtd_info *mtd)
+{
+	struct nand_chip *chip = mtd->priv;
+	u32 size;
+	u8 val;
+	struct nand_onfi_params *p;
+
+	if (buf_index == 0) {
+		p = &chip->onfi_params;
+		if (curr_cmd->cmd1 == NAND_CMD_READID)
+			size = 4;
+		else if (curr_cmd->cmd1 == NAND_CMD_PARAM)
+			size = sizeof(struct nand_onfi_params);
+		else if (curr_cmd->cmd1 == NAND_CMD_RNDOUT)
+			size = le16_to_cpu(p->ext_param_page_length) * 16;
+		else if (curr_cmd->cmd1 == NAND_CMD_GET_FEATURES)
+			size = 4;
+		else if (curr_cmd->cmd1 == NAND_CMD_STATUS)
+			return readb(&arasan_nand_base->flash_sts_reg);
+		else
+			size = 8;
+		chip->read_buf(mtd, &buf_data[0], size);
+	}
+
+	val = *(&buf_data[0] + buf_index);
+	buf_index++;
+
+	return val;
+}
+
+static void arasan_nand_cmd_function(struct mtd_info *mtd, unsigned int command,
+				     int column, int page_addr)
+{
+	u32 i, ret = 0;
+	struct nand_chip *chip = mtd->priv;
+	struct arasan_nand_info *nand = chip->priv;
+
+	curr_cmd = NULL;
+	writel(ARASAN_NAND_INT_STS_XFR_CMPLT_MASK,
+	       &arasan_nand_base->intsts_enr);
+
+	if ((command == NAND_CMD_READOOB) &&
+	    (mtd->writesize > 512)) {
+		column += mtd->writesize;
+		command = NAND_CMD_READ0;
+	}
+
+	/* Get the command format */
+	for (i = 0; (arasan_nand_commands[i].cmd1 != NAND_CMD_NONE ||
+		     arasan_nand_commands[i].cmd2 != NAND_CMD_NONE); i++) {
+		if (command == arasan_nand_commands[i].cmd1) {
+			curr_cmd = &arasan_nand_commands[i];
+			break;
+		}
+	}
+
+	if (curr_cmd == NULL) {
+		printf("Unsupported Command; 0x%x\n", command);
+		return;
+	}
+
+	if (curr_cmd->cmd1 == NAND_CMD_RESET)
+		ret = arasan_nand_reset(curr_cmd);
+
+	if ((curr_cmd->cmd1 == NAND_CMD_READID) ||
+	    (curr_cmd->cmd1 == NAND_CMD_PARAM) ||
+	    (curr_cmd->cmd1 == NAND_CMD_RNDOUT) ||
+	    (curr_cmd->cmd1 == NAND_CMD_GET_FEATURES) ||
+	    (curr_cmd->cmd1 == NAND_CMD_READ0))
+		ret = arasan_nand_send_rdcmd(curr_cmd, column, page_addr, mtd);
+
+	if ((curr_cmd->cmd1 == NAND_CMD_SET_FEATURES) ||
+	    (curr_cmd->cmd1 == NAND_CMD_SEQIN)) {
+		nand->page = page_addr;
+		ret = arasan_nand_send_wrcmd(curr_cmd, column, page_addr, mtd);
+	}
+
+	if (curr_cmd->cmd1 == NAND_CMD_ERASE1)
+		ret = arasan_nand_erase(curr_cmd, column, page_addr, mtd);
+
+	if (curr_cmd->cmd1 == NAND_CMD_STATUS)
+		ret = arasan_nand_read_status(curr_cmd, column, page_addr, mtd);
+
+	if (ret != 0)
+		printf("ERROR:%s:command:0x%x\n", __func__, curr_cmd->cmd1);
+
+}
+
+static void arasan_nand_ecc_init(struct mtd_info *mtd)
+{
+	u32 found = 0;
+	u8 bchmodeval = 0;
+	u32 regval, eccpos_start, i;
+	struct nand_chip *nand_chip = mtd->priv;
+
+	for (i = 0; i < ARRAY_SIZE(ecc_matrix);i++) {
+		if ((ecc_matrix[i].pagesize == mtd->writesize) &&
+		    ((1 << ecc_matrix[i].ecc_codeword_size) >=
+		     nand_chip->ecc_step_ds)) {
+			if (ecc_matrix[i].eccbits >=
+			    nand_chip->ecc_strength_ds) {
+				found = i;
+				break;
+			}
+			found = i;
+		}
+	}
+
+	if (found) {
+		regval = ecc_matrix[i].eccaddr | (ecc_matrix[i].eccsize << 16) |
+			 (ecc_matrix[i].slcmlc << 27);
+		writel(regval, &arasan_nand_base->ecc_reg);
+
+		if (ecc_matrix[i].slcmlc) {
+			switch (ecc_matrix[i].eccbits) {
+			case 16:
+				bchmodeval = 0x0;
+				break;
+			case 12:
+				bchmodeval = 0x1;
+				break;
+			case 8:
+				bchmodeval = 0x2;
+				break;
+			case 4:
+				bchmodeval = 0x3;
+				break;
+			case 24:
+				bchmodeval = 0x4;
+				break;
+			default:
+				break;
+			}
+			regval = readl(&arasan_nand_base->memadr_reg2);
+			regval &= ~ARASAN_NAND_MEM_ADDR2_BCH_MASK;
+			regval |= (bchmodeval <<
+				   ARASAN_NAND_MEM_ADDR2_BCH_SHIFT);
+			writel(regval, &arasan_nand_base->memadr_reg2);
+		}
+
+		nand_oob.eccbytes = ecc_matrix[i].eccsize;
+		eccpos_start = mtd->oobsize - nand_oob.eccbytes;
+
+		for (i = 0; i < nand_oob.eccbytes; i++)
+			nand_oob.eccpos[i] = eccpos_start + i;
+
+		nand_oob.oobfree[0].offset = 2;
+		nand_oob.oobfree[0].length = eccpos_start - 2;
+
+		if (ecc_matrix[i].eccbits == 24)
+			nand_chip->ecc.size = 1024;
+		else
+			nand_chip->ecc.size = 512;
+
+		nand_chip->ecc.bytes = ecc_matrix[i].eccsize;
+		nand_chip->ecc.layout = &nand_oob;
+	}
+}
+
+static int arasan_nand_init(struct nand_chip *nand_chip, int devnum)
+{
+	struct arasan_nand_info *nand;
+	struct mtd_info *mtd;
+	int err = -1;
+
+	nand = calloc(1, sizeof(struct arasan_nand_info));
+	if (!nand) {
+		printf("%s: failed to allocate\n", __func__);
+		return err;
+	}
+
+	nand->nand_base = (void *)ARASAN_NAND_BASEADDR;
+	mtd = &nand_info[0];
+	nand_chip->priv = nand;
+	mtd->priv = nand_chip;
+
+	/* Set address of NAND IO lines */
+	nand_chip->IO_ADDR_R = (void *)&arasan_nand_base->buf_dataport;
+	nand_chip->IO_ADDR_W = (void *)&arasan_nand_base->buf_dataport;
+
+	/* Set the driver entry points for MTD */
+	nand_chip->cmdfunc = arasan_nand_cmd_function;
+	nand_chip->select_chip = arasan_nand_select_chip;
+	nand_chip->read_byte = arasan_nand_read_byte;
+
+	/* Buffer read/write routines */
+	nand_chip->read_buf = arasan_nand_read_buf;
+	nand_chip->write_buf = arasan_nand_write_buf;
+	nand_chip->bbt_options = NAND_BBT_USE_FLASH;
+
+	writel(0x0, &arasan_nand_base->cmd_reg);
+	writel(0x0, &arasan_nand_base->pgm_reg);
+
+	/* first scan to find the device and get the page size */
+	if (nand_scan_ident(mtd, 1, NULL)) {
+		printf("%s: nand_scan_ident failed\n", __func__);
+		goto fail;
+	}
+
+	mtd->size = nand_chip->chipsize;
+
+	nand_chip->ecc.mode = NAND_ECC_HW;
+	nand_chip->ecc.strength = 1;
+	nand_chip->ecc.hwctl = NULL;
+	nand_chip->ecc.read_page = arasan_nand_read_page_hwecc;
+	nand_chip->ecc.write_page = arasan_nand_write_page_hwecc;
+	nand_chip->ecc.read_oob = arasan_nand_read_oob;
+	nand_chip->ecc.write_oob = arasan_nand_write_oob;
+
+	arasan_nand_ecc_init(mtd);
+
+	if (nand_scan_tail(mtd)) {
+		printf("%s: nand_scan_tail failed\n", __func__);
+		goto fail;
+	}
+	if (nand_register(devnum)) {
+		printf("Nand Register Fail\n");
+		goto fail;
+	}
+
+	return 0;
+fail:
+	free(nand);
+	return err;
+}
+
+void board_nand_init(void)
+{
+	struct nand_chip *nand = &nand_chip[0];
+
+	if (arasan_nand_init(nand, 0))
+		puts("NAND init failed\n");
+}
