Merge branch 'master' of git://git.denx.de/u-boot-arm

5 files changed, 519 insertions, 67 deletions

diff --git a/drivers/mmc/omap3_mmc.c b/drivers/mmc/omap3_mmc.c
index 399c57b7054..e90db7ee337 100644
--- a/drivers/mmc/omap3_mmc.c
+++ b/drivers/mmc/omap3_mmc.c
@@ -28,6 +28,7 @@
 #include <mmc.h>
 #include <part.h>
 #include <i2c.h>
+#include <asm/io.h>
 #include <asm/arch/mmc.h>
 
 const unsigned short mmc_transspeed_val[15][4] = {
@@ -50,6 +51,7 @@ const unsigned short mmc_transspeed_val[15][4] = {
 
 mmc_card_data cur_card_data;
 static block_dev_desc_t mmc_blk_dev;
+static hsmmc_t *mmc_base = (hsmmc_t *)OMAP_HSMMC_BASE;
 
 block_dev_desc_t *mmc_get_dev(int dev)
 {
@@ -60,55 +62,49 @@ void twl4030_mmc_config(void)
 {
 	unsigned char data;
 
-	data = 0x20;
-	i2c_write(0x4B, 0x82, 1, &data, 1);
-	data = 0x2;
-	i2c_write(0x4B, 0x85, 1, &data, 1);
+	data = DEV_GRP_P1;
+	i2c_write(PWRMGT_ADDR_ID4, VMMC1_DEV_GRP, 1, &data, 1);
+	data = VMMC1_VSEL_30;
+	i2c_write(PWRMGT_ADDR_ID4, VMMC1_DEDICATED, 1, &data, 1);
 }
 
 unsigned char mmc_board_init(void)
 {
-	unsigned int value = 0;
+	t2_t *t2_base = (t2_t *)T2_BASE;
 
 	twl4030_mmc_config();
 
-	value = CONTROL_PBIAS_LITE;
-	CONTROL_PBIAS_LITE = value | (1 << 2) | (1 << 1) | (1 << 9);
+	writel(readl(&t2_base->pbias_lite) | PBIASLITEPWRDNZ1 |
+		PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
+		&t2_base->pbias_lite);
 
-	value = CONTROL_DEV_CONF0;
-	CONTROL_DEV_CONF0 = value | (1 << 24);
+	writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
+		&t2_base->devconf0);
 
 	return 1;
 }
 
 void mmc_init_stream(void)
 {
-	volatile unsigned int mmc_stat;
+	writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
 
-	OMAP_HSMMC_CON |= INIT_INITSTREAM;
+	writel(MMC_CMD0, &mmc_base->cmd);
+	while (!(readl(&mmc_base->stat) & CC_MASK));
 
-	OMAP_HSMMC_CMD = MMC_CMD0;
-	do {
-		mmc_stat = OMAP_HSMMC_STAT;
-	} while (!(mmc_stat & CC_MASK));
-
-	OMAP_HSMMC_STAT = CC_MASK;
+	writel(CC_MASK, &mmc_base->stat);
 
-	OMAP_HSMMC_CMD = MMC_CMD0;
-	do {
-		mmc_stat = OMAP_HSMMC_STAT;
-	} while (!(mmc_stat & CC_MASK));
+	writel(MMC_CMD0, &mmc_base->cmd);
+	while (!(readl(&mmc_base->stat) & CC_MASK));
 
-	OMAP_HSMMC_STAT = OMAP_HSMMC_STAT;
-	OMAP_HSMMC_CON &= ~INIT_INITSTREAM;
+	writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
 }
 
 unsigned char mmc_clock_config(unsigned int iclk, unsigned short clk_div)
 {
 	unsigned int val;
 
-	mmc_reg_out(OMAP_HSMMC_SYSCTL, (ICE_MASK | DTO_MASK | CEN_MASK),
-		    (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
+	mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
+			(ICE_STOP | DTO_15THDTO | CEN_DISABLE));
 
 	switch (iclk) {
 	case CLK_INITSEQ:
@@ -123,12 +119,12 @@ unsigned char mmc_clock_config(unsigned int iclk, unsigned short clk_div)
 	default:
 		return 0;
 	}
-	mmc_reg_out(OMAP_HSMMC_SYSCTL,
-		    ICE_MASK | CLKD_MASK, (val << CLKD_OFFSET) | ICE_OSCILLATE);
+	mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
+			(val << CLKD_OFFSET) | ICE_OSCILLATE);
 
-	while ((OMAP_HSMMC_SYSCTL & ICS_MASK) == ICS_NOTREADY) ;
+	while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY);
 
-	OMAP_HSMMC_SYSCTL |= CEN_ENABLE;
+	writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
 	return 1;
 }
 
@@ -138,59 +134,63 @@ unsigned char mmc_init_setup(void)
 
 	mmc_board_init();
 
-	OMAP_HSMMC_SYSCONFIG |= MMC_SOFTRESET;
-	while ((OMAP_HSMMC_SYSSTATUS & RESETDONE) == 0) ;
+	writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
+		&mmc_base->sysconfig);
+	while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0);
 
-	OMAP_HSMMC_SYSCTL |= SOFTRESETALL;
-	while ((OMAP_HSMMC_SYSCTL & SOFTRESETALL) != 0x0) ;
+	writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
+	while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0);
 
-	OMAP_HSMMC_HCTL = DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0;
-	OMAP_HSMMC_CAPA |= VS30_3V0SUP | VS18_1V8SUP;
+	writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl);
+	writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP,
+		&mmc_base->capa);
 
-	reg_val = OMAP_HSMMC_CON & RESERVED_MASK;
+	reg_val = readl(&mmc_base->con) & RESERVED_MASK;
 
-	OMAP_HSMMC_CON = CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH |
-		CDP_ACTIVEHIGH | MIT_CTO | DW8_1_4BITMODE | MODE_FUNC |
-		STR_BLOCK | HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN;
+	writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
+		MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
+		HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
 
 	mmc_clock_config(CLK_INITSEQ, 0);
-	OMAP_HSMMC_HCTL |= SDBP_PWRON;
+	writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
 
-	OMAP_HSMMC_IE = 0x307f0033;
+	writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE |
+		IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC,
+		&mmc_base->ie);
 
 	mmc_init_stream();
 	return 1;
 }
 
 unsigned char mmc_send_cmd(unsigned int cmd, unsigned int arg,
-			   unsigned int *response)
+				unsigned int *response)
 {
-	volatile unsigned int mmc_stat;
+	unsigned int mmc_stat;
 
-	while ((OMAP_HSMMC_PSTATE & DATI_MASK) == DATI_CMDDIS) ;
+	while ((readl(&mmc_base->pstate) & DATI_MASK) == DATI_CMDDIS);
 
-	OMAP_HSMMC_BLK = BLEN_512BYTESLEN | NBLK_STPCNT;
-	OMAP_HSMMC_STAT = 0xFFFFFFFF;
-	OMAP_HSMMC_ARG = arg;
-	OMAP_HSMMC_CMD = cmd | CMD_TYPE_NORMAL | CICE_NOCHECK |
-	    CCCE_NOCHECK | MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE |
-	    DE_DISABLE;
+	writel(BLEN_512BYTESLEN | NBLK_STPCNT, &mmc_base->blk);
+	writel(0xFFFFFFFF, &mmc_base->stat);
+	writel(arg, &mmc_base->arg);
+	writel(cmd | CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
+		MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE,
+		&mmc_base->cmd);
 
 	while (1) {
 		do {
-			mmc_stat = OMAP_HSMMC_STAT;
+			mmc_stat = readl(&mmc_base->stat);
 		} while (mmc_stat == 0);
 
 		if ((mmc_stat & ERRI_MASK) != 0)
 			return (unsigned char) mmc_stat;
 
 		if (mmc_stat & CC_MASK) {
-			OMAP_HSMMC_STAT = CC_MASK;
-			response[0] = OMAP_HSMMC_RSP10;
+			writel(CC_MASK, &mmc_base->stat);
+			response[0] = readl(&mmc_base->rsp10);
 			if ((cmd & RSP_TYPE_MASK) == RSP_TYPE_LGHT136) {
-				response[1] = OMAP_HSMMC_RSP32;
-				response[2] = OMAP_HSMMC_RSP54;
-				response[3] = OMAP_HSMMC_RSP76;
+				response[1] = readl(&mmc_base->rsp32);
+				response[2] = readl(&mmc_base->rsp54);
+				response[3] = readl(&mmc_base->rsp76);
 			}
 			break;
 		}
@@ -200,7 +200,7 @@ unsigned char mmc_send_cmd(unsigned int cmd, unsigned int arg,
 
 unsigned char mmc_read_data(unsigned int *output_buf)
 {
-	volatile unsigned int mmc_stat;
+	unsigned int mmc_stat;
 	unsigned int read_count = 0;
 
 	/*
@@ -208,7 +208,7 @@ unsigned char mmc_read_data(unsigned int *output_buf)
 	 */
 	while (1) {
 		do {
-			mmc_stat = OMAP_HSMMC_STAT;
+			mmc_stat = readl(&mmc_base->stat);
 		} while (mmc_stat == 0);
 
 		if ((mmc_stat & ERRI_MASK) != 0)
@@ -217,19 +217,22 @@ unsigned char mmc_read_data(unsigned int *output_buf)
 		if (mmc_stat & BRR_MASK) {
 			unsigned int k;
 
-			OMAP_HSMMC_STAT |= BRR_MASK;
+			writel(readl(&mmc_base->stat) | BRR_MASK,
+				&mmc_base->stat);
 			for (k = 0; k < MMCSD_SECTOR_SIZE / 4; k++) {
-				*output_buf = OMAP_HSMMC_DATA;
+				*output_buf = readl(&mmc_base->data);
 				output_buf++;
 				read_count += 4;
 			}
 		}
 
 		if (mmc_stat & BWR_MASK)
-			OMAP_HSMMC_STAT |= BWR_MASK;
+			writel(readl(&mmc_base->stat) | BWR_MASK,
+				&mmc_base->stat);
 
 		if (mmc_stat & TC_MASK) {
-			OMAP_HSMMC_STAT |= TC_MASK;
+			writel(readl(&mmc_base->stat) | TC_MASK,
+				&mmc_base->stat);
 			break;
 		}
 	}
@@ -273,8 +276,8 @@ unsigned char mmc_detect_card(mmc_card_data *mmc_card_cur)
 		mmc_card_cur->card_type = MMC_CARD;
 		ocr_value |= MMC_OCR_REG_ACCESS_MODE_SECTOR;
 		ret_cmd41 = MMC_CMD1;
-		OMAP_HSMMC_CON &= ~OD;
-		OMAP_HSMMC_CON |= OPENDRAIN;
+		writel(readl(&mmc_base->con) & ~OD, &mmc_base->con);
+		writel(readl(&mmc_base->con) | OPENDRAIN, &mmc_base->con);
 	}
 
 	argument = ocr_value;
@@ -342,8 +345,8 @@ unsigned char mmc_detect_card(mmc_card_data *mmc_card_cur)
 		mmc_card_cur->RCA = ((mmc_resp_r6 *) resp)->newpublishedrca;
 	}
 
-	OMAP_HSMMC_CON &= ~OD;
-	OMAP_HSMMC_CON |= NOOPENDRAIN;
+	writel(readl(&mmc_base->con) & ~OD, &mmc_base->con);
+	writel(readl(&mmc_base->con) | NOOPENDRAIN, &mmc_base->con);
 	return 1;
 }
 
@@ -518,7 +521,7 @@ unsigned long mmc_bread(int dev_num, unsigned long blknr, lbaint_t blkcnt,
 			void *dst)
 {
 	omap_mmc_read_sect(blknr, (blkcnt * MMCSD_SECTOR_SIZE), &cur_card_data,
-			   (unsigned long *) dst);
+				(unsigned long *) dst);
 	return 1;
 }
 
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 24edb27cf13..5974d7768d4 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -38,6 +38,7 @@ endif
 COBJS-$(CONFIG_DRIVER_NAND_BFIN) += bfin_nand.o
 COBJS-$(CONFIG_NAND_FSL_ELBC) += fsl_elbc_nand.o
 COBJS-$(CONFIG_NAND_FSL_UPM) += fsl_upm.o
+COBJS-$(CONFIG_NAND_NOMADIK) += nomadik.o
 COBJS-$(CONFIG_NAND_S3C64XX) += s3c64xx.o
 COBJS-$(CONFIG_NAND_OMAP_GPMC) += omap_gpmc.o
 endif
diff --git a/drivers/mtd/nand/nomadik.c b/drivers/mtd/nand/nomadik.c
new file mode 100644
index 00000000000..b76f4cbb5e6
--- /dev/null
+++ b/drivers/mtd/nand/nomadik.c
@@ -0,0 +1,221 @@
+/*
+ * (C) Copyright 2007 STMicroelectronics, <www.st.com>
+ * (C) Copyright 2009 Alessandro Rubini <rubini@unipv.it>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <nand.h>
+#include <asm/io.h>
+
+static inline int parity(int b) /* b is really a byte; returns 0 or ~0 */
+{
+	__asm__ __volatile__(
+		"eor   %0, %0, %0, lsr #4\n\t"
+		"eor   %0, %0, %0, lsr #2\n\t"
+		"eor   %0, %0, %0, lsr #1\n\t"
+		"ands  %0, %0, #1\n\t"
+		"subne %0, %0, #2\t"
+		: "=r" (b) : "0" (b));
+	return b;
+}
+
+/*
+ * This is the ECC routine used in hardware, according to the manual.
+ * HW claims to make the calculation but not the correction; so we must
+ * recalculate the bytes for a comparison.
+ */
+static int ecc512(const unsigned char *data, unsigned char *ecc)
+{
+	int gpar = 0;
+	int i, val, par;
+	int pbits = 0;		/* P8, P16, ... P2048 */
+	int pprime = 0;		/* P8', P16', ... P2048' */
+	int lowbits;		/* P1, P2, P4 and primes */
+
+	for (i = 0; i < 512; i++) {
+		par = parity((val = data[i]));
+		gpar ^= val;
+		pbits ^= (i & par);
+	}
+	/*
+	 * Ok, now gpar is global parity (xor of all bytes)
+	 * pbits are all the parity bits (non-prime ones)
+	 */
+	par = parity(gpar);
+	pprime = pbits ^ par;
+	/* Put low bits in the right position for ecc[2] (bits 7..2) */
+	lowbits = 0
+		| (parity(gpar & 0xf0) & 0x80)	/* P4  */
+		| (parity(gpar & 0x0f) & 0x40)	/* P4' */
+		| (parity(gpar & 0xcc) & 0x20)	/* P2  */
+		| (parity(gpar & 0x33) & 0x10)	/* P2' */
+		| (parity(gpar & 0xaa) & 0x08)	/* P1  */
+		| (parity(gpar & 0x55) & 0x04);	/* P1' */
+
+	ecc[2] = ~(lowbits | ((pbits & 0x100) >> 7) | ((pprime & 0x100) >> 8));
+	/* now intermix bits for ecc[1] (P1024..P128') and ecc[0] (P64..P8') */
+	ecc[1] = ~(    (pbits & 0x80) >> 0  | ((pprime & 0x80) >> 1)
+		    | ((pbits & 0x40) >> 1) | ((pprime & 0x40) >> 2)
+		    | ((pbits & 0x20) >> 2) | ((pprime & 0x20) >> 3)
+		    | ((pbits & 0x10) >> 3) | ((pprime & 0x10) >> 4));
+
+	ecc[0] = ~(    (pbits & 0x8) << 4  | ((pprime & 0x8) << 3)
+		    | ((pbits & 0x4) << 3) | ((pprime & 0x4) << 2)
+		    | ((pbits & 0x2) << 2) | ((pprime & 0x2) << 1)
+		    | ((pbits & 0x1) << 1) | ((pprime & 0x1) << 0));
+	return 0;
+}
+
+/* This is the method in the chip->ecc field */
+static int nomadik_ecc_calculate(struct mtd_info *mtd, const uint8_t *dat,
+				 uint8_t *ecc_code)
+{
+	return ecc512(dat, ecc_code);
+}
+
+static int nomadik_ecc_correct(struct mtd_info *mtd, uint8_t *dat,
+				uint8_t *r_ecc, uint8_t *c_ecc)
+{
+	struct nand_chip *chip = mtd->priv;
+	uint32_t r, c, d, diff; /*read, calculated, xor of them */
+
+	if (!memcmp(r_ecc, c_ecc, chip->ecc.bytes))
+		return 0;
+
+	/* Reorder the bytes into ascending-order 24 bits -- see manual */
+	r = r_ecc[2] << 22 | r_ecc[1] << 14 | r_ecc[0] << 6 | r_ecc[2] >> 2;
+	c = c_ecc[2] << 22 | c_ecc[1] << 14 | c_ecc[0] << 6 | c_ecc[2] >> 2;
+	diff = (r ^ c) & ((1<<24)-1); /* use 24 bits only */
+
+	/* If 12 bits are different, one per pair, it's correctable */
+	if (((diff | (diff>>1)) & 0x555555) == 0x555555) {
+		int bit = ((diff & 2) >> 1)
+			| ((diff & 0x8) >> 2) | ((diff & 0x20) >> 3);
+		int byte;
+
+		d = diff >> 6; /* remove bit-order info */
+		byte =  ((d & 2) >> 1)
+			| ((d & 0x8) >> 2) | ((d & 0x20) >> 3)
+			| ((d & 0x80) >> 4) | ((d & 0x200) >> 5)
+			| ((d & 0x800) >> 6) | ((d & 0x2000) >> 7)
+			| ((d & 0x8000) >> 8) | ((d & 0x20000) >> 9);
+		/* correct the single bit */
+		dat[byte] ^= 1<<bit;
+		return 0;
+	}
+	/* If 1 bit only differs, it's one bit error in ECC, ignore */
+	if ((diff ^ (1 << (ffs(diff) - 1))) == 0)
+		return 0;
+	/* Otherwise, uncorrectable */
+	return -1;
+}
+
+static void nomadik_ecc_hwctl(struct mtd_info *mtd, int mode)
+{ /* mandatory in the structure but not used here */ }
+
+
+/* This is the layout used by older installations, we keep compatible */
+struct nand_ecclayout nomadik_ecc_layout = {
+	.eccbytes = 3 * 4,
+	.eccpos = { /* each subpage has 16 bytes: pos 2,3,4 hosts ECC */
+		0x02, 0x03, 0x04,
+		0x12, 0x13, 0x14,
+		0x22, 0x23, 0x24,
+		0x32, 0x33, 0x34},
+	.oobfree = { {0x08, 0x08}, {0x18, 0x08}, {0x28, 0x08}, {0x38, 0x08} },
+};
+
+#define MASK_ALE	(1 << 24)	/* our ALE is AD21 */
+#define MASK_CLE	(1 << 23)	/* our CLE is AD22 */
+
+/* This is copied from the AT91SAM9 devices (Stelian Pop, Lead Tech Design) */
+static void nomadik_nand_hwcontrol(struct mtd_info *mtd,
+				   int cmd, unsigned int ctrl)
+{
+	struct nand_chip *this = mtd->priv;
+	u32 pcr0 = readl(REG_FSMC_PCR0);
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
+		IO_ADDR_W &= ~(MASK_ALE | MASK_CLE);
+
+		if (ctrl & NAND_CLE)
+			IO_ADDR_W |= MASK_CLE;
+		if (ctrl & NAND_ALE)
+			IO_ADDR_W |= MASK_ALE;
+
+		if (ctrl & NAND_NCE)
+			writel(pcr0 | 0x4, REG_FSMC_PCR0);
+		else
+			writel(pcr0 & ~0x4, REG_FSMC_PCR0);
+
+		this->IO_ADDR_W = (void *) IO_ADDR_W;
+		this->IO_ADDR_R = (void *) IO_ADDR_W;
+	}
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, this->IO_ADDR_W);
+}
+
+/* Returns 1 when ready; upper layers timeout at 20ms with timer routines */
+static int nomadik_nand_ready(struct mtd_info *mtd)
+{
+	return 1; /* The ready bit is handled in hardware */
+}
+
+/* Copy a buffer 32bits at a time: faster than defualt method which is 8bit */
+static void nomadik_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+	int i;
+	struct nand_chip *chip = mtd->priv;
+	u32 *p = (u32 *) buf;
+
+	len >>= 2;
+	writel(0, REG_FSMC_ECCR0);
+	for (i = 0; i < len; i++)
+		p[i] = readl(chip->IO_ADDR_R);
+}
+
+int board_nand_init(struct nand_chip *chip)
+{
+	/* Set up the FSMC_PCR0 for nand access*/
+	writel(0x0000004a, REG_FSMC_PCR0);
+	/* Set up FSMC_PMEM0, FSMC_PATT0 with timing data for access */
+	writel(0x00020401, REG_FSMC_PMEM0);
+	writel(0x00020404, REG_FSMC_PATT0);
+
+	chip->options = NAND_COPYBACK |	NAND_CACHEPRG | NAND_NO_PADDING;
+	chip->cmd_ctrl = nomadik_nand_hwcontrol;
+	chip->dev_ready = nomadik_nand_ready;
+	/* The chip allows 32bit reads, so avoid the default 8bit copy */
+	chip->read_buf = nomadik_nand_read_buf;
+
+	/* ECC: follow the hardware-defined rulse, but do it in sw */
+	chip->ecc.mode = NAND_ECC_HW;
+	chip->ecc.bytes = 3;
+	chip->ecc.size = 512;
+	chip->ecc.layout = &nomadik_ecc_layout;
+	chip->ecc.calculate = nomadik_ecc_calculate;
+	chip->ecc.hwctl = nomadik_ecc_hwctl;
+	chip->ecc.correct = nomadik_ecc_correct;
+
+	return 0;
+}
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 0f980ab0a88..d0efd73c5bb 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -25,6 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	:= $(obj)libserial.a
 
+COBJS-$(CONFIG_ARM_DCC) += arm_dcc.o
 COBJS-$(CONFIG_ATMEL_USART) += atmel_usart.o
 COBJS-$(CONFIG_MCFUART) += mcfuart.o
 COBJS-$(CONFIG_NS9750_UART) += ns9750_serial.o
diff --git a/drivers/serial/arm_dcc.c b/drivers/serial/arm_dcc.c
new file mode 100644
index 00000000000..5a7fb6bc003
--- /dev/null
+++ b/drivers/serial/arm_dcc.c
@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2004-2007 ARM Limited.
+ * Copyright (C) 2008 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * As a special exception, if other files instantiate templates or use macros
+ * or inline functions from this file, or you compile this file and link it
+ * with other works to produce a work based on this file, this file does not
+ * by itself cause the resulting work to be covered by the GNU General Public
+ * License. However the source code for this file must still be made available
+ * in accordance with section (3) of the GNU General Public License.
+
+ * This exception does not invalidate any other reasons why a work based on
+ * this file might be covered by the GNU General Public License.
+ */
+
+#include <common.h>
+#include <devices.h>
+
+#define DCC_ARM9_RBIT	(1 << 0)
+#define DCC_ARM9_WBIT	(1 << 1)
+#define DCC_ARM11_RBIT	(1 << 30)
+#define DCC_ARM11_WBIT	(1 << 29)
+
+#define read_core_id(x)	do {						\
+		__asm__ ("mrc p15, 0, %0, c0, c0, 0\n" : "=r" (x));	\
+		x = (x >> 4) & 0xFFF;					\
+		} while (0);
+
+/*
+ * ARM9
+ */
+#define write_arm9_dcc(x)	\
+		__asm__ volatile ("mcr p14, 0, %0, c1, c0, 0\n" : : "r" (x))
+
+#define read_arm9_dcc(x)	\
+		__asm__ volatile ("mrc p14, 0, %0, c1, c0, 0\n" : "=r" (x))
+
+#define status_arm9_dcc(x)	\
+		__asm__ volatile ("mrc p14, 0, %0, c0, c0, 0\n" : "=r" (x))
+
+#define can_read_arm9_dcc(x)	do {	\
+		status_arm9_dcc(x);	\
+		x &= DCC_ARM9_RBIT;	\
+		} while (0);
+
+#define can_write_arm9_dcc(x)	do {	\
+		status_arm9_dcc(x);	\
+		x &= DCC_ARM9_WBIT;	\
+		x = (x == 0);		\
+		} while (0);
+
+/*
+ * ARM11
+ */
+#define write_arm11_dcc(x)	\
+		__asm__ volatile ("mcr p14, 0, %0, c0, c5, 0\n" : : "r" (x))
+
+#define read_arm11_dcc(x)	\
+		__asm__ volatile ("mrc p14, 0, %0, c0, c5, 0\n" : "=r" (x))
+
+#define status_arm11_dcc(x)	\
+		__asm__ volatile ("mrc p14, 0, %0, c0, c1, 0\n" : "=r" (x))
+
+#define can_read_arm11_dcc(x)	do {	\
+		status_arm11_dcc(x);	\
+		x &= DCC_ARM11_RBIT;	\
+		} while (0);
+
+#define can_write_arm11_dcc(x)	do {	\
+		status_arm11_dcc(x);	\
+		x &= DCC_ARM11_WBIT;	\
+		x = (x == 0);		\
+		} while (0);
+
+#define TIMEOUT_COUNT 0x4000000
+
+static enum {
+	arm9_and_earlier,
+	arm11_and_later
+} arm_type = arm9_and_earlier;
+
+#ifndef CONFIG_ARM_DCC_MULTI
+#define arm_dcc_init serial_init
+void serial_setbrg(void) {}
+#define arm_dcc_getc serial_getc
+#define arm_dcc_putc serial_putc
+#define arm_dcc_puts serial_puts
+#define arm_dcc_tstc serial_tstc
+#endif
+
+int arm_dcc_init(void)
+{
+	register unsigned int id;
+
+	read_core_id(id);
+
+	if (id >= 0xb00)
+		arm_type = arm11_and_later;
+	else
+		arm_type = arm9_and_earlier;
+
+	return 0;
+}
+
+int arm_dcc_getc(void)
+{
+	int ch;
+	register unsigned int reg;
+
+	switch (arm_type) {
+	case arm11_and_later:
+		do {
+			can_read_arm11_dcc(reg);
+		} while (!reg);
+		read_arm11_dcc(ch);
+		break;
+
+	case arm9_and_earlier:
+	default:
+		do {
+			can_read_arm9_dcc(reg);
+		} while (!reg);
+		read_arm9_dcc(ch);
+		break;
+	}
+
+	return ch;
+}
+
+void arm_dcc_putc(char ch)
+{
+	register unsigned int reg;
+	unsigned int timeout_count = TIMEOUT_COUNT;
+
+	switch (arm_type) {
+	case arm11_and_later:
+		while (--timeout_count) {
+			can_write_arm11_dcc(reg);
+			if (reg)
+				break;
+		}
+		if (timeout_count == 0)
+			return;
+		else
+			write_arm11_dcc(ch);
+		break;
+
+	case arm9_and_earlier:
+	default:
+		while (--timeout_count) {
+			can_write_arm9_dcc(reg);
+			if (reg)
+				break;
+		}
+		if (timeout_count == 0)
+			return;
+		else
+			write_arm9_dcc(ch);
+		break;
+	}
+}
+
+void arm_dcc_puts(const char *s)
+{
+	while (*s)
+		arm_dcc_putc(*s++);
+}
+
+int arm_dcc_tstc(void)
+{
+	register unsigned int reg;
+
+	switch (arm_type) {
+	case arm11_and_later:
+		can_read_arm11_dcc(reg);
+		break;
+	case arm9_and_earlier:
+	default:
+		can_read_arm9_dcc(reg);
+		break;
+	}
+
+	return reg;
+}
+
+#ifdef CONFIG_ARM_DCC_MULTI
+static device_t arm_dcc_dev;
+
+int drv_arm_dcc_init(void)
+{
+	int rc;
+
+	/* Device initialization */
+	memset(&arm_dcc_dev, 0, sizeof(arm_dcc_dev));
+
+	strcpy(arm_dcc_dev.name, "dcc");
+	arm_dcc_dev.ext = 0;	/* No extensions */
+	arm_dcc_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_OUTPUT;
+	arm_dcc_dev.tstc = arm_dcc_tstc;	/* 'tstc' function */
+	arm_dcc_dev.getc = arm_dcc_getc;	/* 'getc' function */
+	arm_dcc_dev.putc = arm_dcc_putc;	/* 'putc' function */
+	arm_dcc_dev.puts = arm_dcc_puts;	/* 'puts' function */
+
+	rc = device_register(&arm_dcc_dev);
+
+	if (rc == 0) {
+		arm_dcc_init();
+		return 1;
+	}
+
+	return 0;
+}
+#endif