diff mbox

[PATCH-v2,2/3] OMAP3: Add support for NAND on ZOOM2/LDP boards

Message ID 1252005968-17686-1-git-send-email-vikram.pandita@ti.com (mailing list archive)
State Superseded, archived
Delegated to: Tony Lindgren
Headers show

Commit Message

vikram pandita Sept. 3, 2009, 7:26 p.m. UTC
From: Vimal Singh <vimalsingh@ti.com>

Adding NAND support for ZOOM2 and LDP board. I have tested it for ZOOM2
boards, someone can verify it for LDP, hopefully it should not have any
problem.

The size of the U-Boot environment partition was increased to 1.25MB.

Vikram: Changed ldp name to zoom.
	Future boards will be called Zoom2/3/4 etc.
	LDP is a Zoom1. Somhow the LDP name got stuck to that.

Singned-off-by: Vimal Singh <vimalsingh@ti.com>
Singned-off-by: Vikram Pandita <vikram.pandita@ti.com>
---
 arch/arm/mach-omap2/Makefile                 |    2 +
 arch/arm/mach-omap2/board-ldp.c              |    2 +
 arch/arm/mach-omap2/board-zoom-flash.c       |  196 ++++++++++++++++++++++++++
 arch/arm/mach-omap2/board-zoom2.c            |    2 +
 arch/arm/plat-omap/include/mach/board-zoom.h |   36 +++++
 arch/arm/plat-omap/include/mach/nand.h       |    1 +
 6 files changed, 239 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/mach-omap2/board-zoom-flash.c
 create mode 100644 arch/arm/plat-omap/include/mach/board-zoom.h

Comments

kishore kadiyala Sept. 4, 2009, 5:42 a.m. UTC | #1
On Fri, Sep 4, 2009 at 12:56 AM, Vikram Pandita<vikram.pandita@ti.com> wrote:
> From: Vimal Singh <vimalsingh@ti.com>
>
> Adding NAND support for ZOOM2 and LDP board. I have tested it for ZOOM2
> boards, someone can verify it for LDP, hopefully it should not have any
> problem.
>
> The size of the U-Boot environment partition was increased to 1.25MB.
>
> Vikram: Changed ldp name to zoom.
>        Future boards will be called Zoom2/3/4 etc.
>        LDP is a Zoom1. Somhow the LDP name got stuck to that.
>
> Singned-off-by: Vimal Singh <vimalsingh@ti.com>
> Singned-off-by: Vikram Pandita <vikram.pandita@ti.com>

Typo error: Singned -> Signed

> ---
>  arch/arm/mach-omap2/Makefile                 |    2 +
>  arch/arm/mach-omap2/board-ldp.c              |    2 +
>  arch/arm/mach-omap2/board-zoom-flash.c       |  196 ++++++++++++++++++++++++++
>  arch/arm/mach-omap2/board-zoom2.c            |    2 +
>  arch/arm/plat-omap/include/mach/board-zoom.h |   36 +++++
>  arch/arm/plat-omap/include/mach/nand.h       |    1 +
>  6 files changed, 239 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/mach-omap2/board-zoom-flash.c
>  create mode 100644 arch/arm/plat-omap/include/mach/board-zoom.h
>
> diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
> index ebe882b..182861d 100644
> --- a/arch/arm/mach-omap2/Makefile
> +++ b/arch/arm/mach-omap2/Makefile
> @@ -54,6 +54,7 @@ obj-$(CONFIG_MACH_OMAP_APOLLON)               += board-apollon.o
>  obj-$(CONFIG_MACH_OMAP3_BEAGLE)                += board-omap3beagle.o \
>                                           mmc-twl4030.o
>  obj-$(CONFIG_MACH_OMAP_LDP)            += board-ldp.o \
> +                                          board-zoom-flash.o \
>                                           mmc-twl4030.o
>  obj-$(CONFIG_MACH_OVERO)               += board-overo.o \
>                                           mmc-twl4030.o
> @@ -69,6 +70,7 @@ obj-$(CONFIG_MACH_NOKIA_RX51)         += board-rx51.o \
>                                           board-rx51-peripherals.o \
>                                           mmc-twl4030.o
>  obj-$(CONFIG_MACH_OMAP_ZOOM2)          += board-zoom2.o \
> +                                          board-zoom-flash.o \
>                                           mmc-twl4030.o \
>                                           board-zoom-debugboard.o
>
> diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
> index 4a4b300..88bd54f 100644
> --- a/arch/arm/mach-omap2/board-ldp.c
> +++ b/arch/arm/mach-omap2/board-ldp.c
> @@ -42,6 +42,7 @@
>  #include <mach/control.h>
>  #include <mach/usb.h>
>  #include <mach/keypad.h>
> +#include <mach/board-zoom.h>
>
>  #include "mmc-twl4030.h"
>
> @@ -385,6 +386,7 @@ static void __init omap_ldp_init(void)
>        ads7846_dev_init();
>        omap_serial_init(&ldp_uart_config);
>        usb_musb_init();
> +       zoom_flash_init();
>
>        twl4030_mmc_init(mmc);
>        /* link regulators to MMC adapters */
> diff --git a/arch/arm/mach-omap2/board-zoom-flash.c b/arch/arm/mach-omap2/board-zoom-flash.c
> new file mode 100644
> index 0000000..1007e5d
> --- /dev/null
> +++ b/arch/arm/mach-omap2/board-zoom-flash.c
> @@ -0,0 +1,196 @@
> +/*
> + * arch/arm/mach-omap2/board-zoom-flash.c
> + *
> + * Copyright (C) 2008-09 Texas Instruments Inc.
> + *
> + * Modified from mach-omap2/board-2430sdp-flash.c
> + * Author(s): Rohit Choraria <rohitkc@ti.com>
> + *            Vimal Singh <vimalsingh@ti.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.
> + */
> +
> +#include <linux/kernel.h>
> +#include <linux/delay.h>
> +#include <linux/platform_device.h>
> +#include <linux/mtd/mtd.h>
> +#include <linux/mtd/partitions.h>
> +#include <linux/mtd/nand.h>
> +#include <linux/types.h>
> +#include <linux/io.h>
> +
> +#include <asm/mach/flash.h>
> +#include <mach/board.h>
> +#include <mach/gpmc.h>
> +#include <mach/nand.h>
> +
> +#include <mach/board-zoom.h>
> +
> +#define NAND_CMD_UNLOCK1       0x23
> +#define NAND_CMD_UNLOCK2       0x24
> +/**
> + * @brief platform specific unlock function
> + *
> + * @param mtd - mtd info
> + * @param ofs - offset to start unlock from
> + * @param len - length to unlock
> + *
> + * @return - unlock status
> + */
> +static int omap_zoom_nand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
> +{
> +       int ret = 0;
> +       int chipnr;
> +       int status;
> +       unsigned long page;
> +       struct nand_chip *this = mtd->priv;
> +       printk(KERN_INFO "nand_unlock: start: %08x, length: %d!\n",
> +                       (int)ofs, (int)len);
> +
> +       /* select the NAND device */
> +       chipnr = (int)(ofs >> this->chip_shift);
> +       this->select_chip(mtd, chipnr);
> +       /* check the WP bit */
> +       this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
> +       if ((this->read_byte(mtd) & 0x80) == 0) {
> +               printk(KERN_ERR "nand_unlock: Device is write protected!\n");
> +               ret = -EINVAL;
> +               goto out;
> +       }
> +
> +       if ((ofs & (mtd->writesize - 1)) != 0) {
> +               printk(KERN_ERR "nand_unlock: Start address must be"
> +                               "beginning of nand page!\n");
> +               ret = -EINVAL;
> +               goto out;
> +       }
> +
> +       if (len == 0 || (len & (mtd->writesize - 1)) != 0) {
> +               printk(KERN_ERR "nand_unlock: Length must be a multiple of "
> +                               "nand page size!\n");
> +               ret = -EINVAL;
> +               goto out;
> +       }
> +
> +       /* submit address of first page to unlock */
> +       page = (unsigned long)(ofs >> this->page_shift);
> +       this->cmdfunc(mtd, NAND_CMD_UNLOCK1, -1, page & this->pagemask);
> +
> +       /* submit ADDRESS of LAST page to unlock */
> +       page += (unsigned long)((ofs + len) >> this->page_shift) ;
> +       this->cmdfunc(mtd, NAND_CMD_UNLOCK2, -1, page & this->pagemask);
> +
> +       /* call wait ready function */
> +       status = this->waitfunc(mtd, this);
> +       udelay(1000);
> +       /* see if device thinks it succeeded */
> +       if (status & 0x01) {
> +               /* there was an error */
> +               printk(KERN_ERR "nand_unlock: error status =0x%08x ", status);
> +               ret = -EIO;
> +               goto out;
> +       }
> +
> + out:
> +       /* de-select the NAND device */
> +       this->select_chip(mtd, -1);
> +       return ret;
> +}
> +
> +static struct mtd_partition zoom_nand_partitions[] = {
> +       /* All the partition sizes are listed in terms of NAND block size */
> +       {
> +               .name           = "X-Loader-NAND",
> +               .offset         = 0,
> +               .size           = 4 * (64 * 2048),      /* 512KB, 0x80000 */
> +               .mask_flags     = MTD_WRITEABLE,        /* force read-only */
> +       },
> +       {
> +               .name           = "U-Boot-NAND",
> +               .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
> +               .size           = 10 * (64 * 2048),     /* 1.25MB, 0x140000 */
> +               .mask_flags     = MTD_WRITEABLE,        /* force read-only */
> +       },
> +       {
> +               .name           = "Boot Env-NAND",
> +               .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x1c0000 */
> +               .size           = 2 * (64 * 2048),      /* 256KB, 0x40000 */
> +       },
> +       {
> +               .name           = "Kernel-NAND",
> +               .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x0200000*/
> +               .size           = 240 * (64 * 2048),    /* 30M, 0x1E00000 */
> +       },
> +#ifdef CONFIG_MACH_OMAP_ZOOM2
> +       {
> +               .name           = "system",
> +               .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x2000000 */
> +               .size           = 1280 * (64 * 2048),   /* 160M, 0xA000000 */
> +       },
> +       {
> +               .name           = "userdata",
> +               .offset         = MTDPART_OFS_APPEND,   /* Offset = 0xC000000 */
> +               .size           = 256 * (64 * 2048),    /* 32M, 0x2000000 */
> +       },
> +       {
> +               .name           = "cache",
> +               .offset         = MTDPART_OFS_APPEND,   /* Offset = 0xE000000 */
> +               .size           = 256 * (64 * 2048),    /* 32M, 0x2000000 */
> +       },
> +#else
> +       {
> +               .name           = "File System - NAND",
> +               .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x2000000 */
> +               .size           = MTDPART_SIZ_FULL,     /* 96MB, 0x6000000 */
> +       },
> +#endif
> +};
> +
> +/* NAND chip access: 16 bit */
> +static struct omap_nand_platform_data zoom_nand_data = {
> +       .parts          = zoom_nand_partitions,
> +       .nr_parts       = ARRAY_SIZE(zoom_nand_partitions),
> +       .nand_setup     = NULL,
> +       .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
> +       .dev_ready      = NULL,
> +       .unlock         = omap_zoom_nand_unlock,
> +};
> +
> +static struct resource zoom_nand_resource = {
> +       .flags          = IORESOURCE_MEM,
> +};
> +
> +static struct platform_device zoom_nand_device = {
> +       .name           = "omap2-nand",
> +       .id             = 0,
> +       .dev            = {
> +       .platform_data  = &zoom_nand_data,
> +       },
> +       .num_resources  = 1,
> +       .resource       = &zoom_nand_resource,
> +};
> +
> +/**
> + * zoom_flash_init - Identify devices connected to GPMC and register.
> + *
> + * @return - void.
> + */
> +void __init zoom_flash_init(void)
> +{
> +       u8 nandcs = GPMC_CS_NUM + 1;
> +       u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
> +
> +       /* pop nand part */
> +       nandcs = ZOOM_3430_NAND_CS;
> +
> +       zoom_nand_data.cs = nandcs;
> +       zoom_nand_data.gpmc_cs_baseaddr = (void *)(gpmc_base_add +
> +                                       GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
> +       zoom_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
> +
> +       if (platform_device_register(&zoom_nand_device) < 0)
> +               printk(KERN_ERR "Unable to register NAND device\n");
> +}
> +
> diff --git a/arch/arm/mach-omap2/board-zoom2.c b/arch/arm/mach-omap2/board-zoom2.c
> index 4d295d5..2142198 100644
> --- a/arch/arm/mach-omap2/board-zoom2.c
> +++ b/arch/arm/mach-omap2/board-zoom2.c
> @@ -20,6 +20,7 @@
>  #include <asm/mach-types.h>
>  #include <asm/mach/arch.h>
>
> +#include <mach/board-zoom.h>
>  #include <mach/common.h>
>  #include <mach/usb.h>
>  #include <mach/keypad.h>
> @@ -271,6 +272,7 @@ static void __init omap_zoom2_init(void)
>        omap_serial_init(&zoom2_uart_config);
>        omap_zoom2_debugboard_init();
>        usb_musb_init();
> +       zoom_flash_init();
>  }
>
>  static void __init omap_zoom2_map_io(void)
> diff --git a/arch/arm/plat-omap/include/mach/board-zoom.h b/arch/arm/plat-omap/include/mach/board-zoom.h
> new file mode 100644
> index 0000000..af8850c
> --- /dev/null
> +++ b/arch/arm/plat-omap/include/mach/board-zoom.h
> @@ -0,0 +1,36 @@
> +/*
> + * arch/arm/plat-omap/include/mach/board-zoom.h
> + *
> + * Hardware definitions for TI OMAP3 LDP/ZOOM2.
> + *
> + * Copyright (C) 2008-09 Texas Instruments Inc.
> + *
> + * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
> + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
> + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
> + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
> + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
> + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
> + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
> + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
> + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> + *
> + * 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 __ASM_ARCH_OMAP_LDP_H
> +#define __ASM_ARCH_OMAP_LDP_H
> +
> +extern void zoom_flash_init(void);
> +
> +#define ZOOM_3430_NAND_CS               0
> +
> +#endif /* __ASM_ARCH_OMAP_LDP_H */
> diff --git a/arch/arm/plat-omap/include/mach/nand.h b/arch/arm/plat-omap/include/mach/nand.h
> index 631a7be..6151985 100644
> --- a/arch/arm/plat-omap/include/mach/nand.h
> +++ b/arch/arm/plat-omap/include/mach/nand.h
> @@ -18,6 +18,7 @@ struct omap_nand_platform_data {
>        int                     nr_parts;
>        int                     (*nand_setup)(void __iomem *);
>        int                     (*dev_ready)(struct omap_nand_platform_data *);
> +       int                     (*unlock)(struct mtd_info *, loff_t, size_t);
>        int                     dma_channel;
>        void __iomem            *gpmc_cs_baseaddr;
>        void __iomem            *gpmc_baseaddr;
> --
> 1.6.3.3.334.g916e1
>
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diff mbox

Patch

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index ebe882b..182861d 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -54,6 +54,7 @@  obj-$(CONFIG_MACH_OMAP_APOLLON)		+= board-apollon.o
 obj-$(CONFIG_MACH_OMAP3_BEAGLE)		+= board-omap3beagle.o \
 					   mmc-twl4030.o
 obj-$(CONFIG_MACH_OMAP_LDP)		+= board-ldp.o \
+					   board-zoom-flash.o \
 					   mmc-twl4030.o
 obj-$(CONFIG_MACH_OVERO)		+= board-overo.o \
 					   mmc-twl4030.o
@@ -69,6 +70,7 @@  obj-$(CONFIG_MACH_NOKIA_RX51)		+= board-rx51.o \
 					   board-rx51-peripherals.o \
 					   mmc-twl4030.o
 obj-$(CONFIG_MACH_OMAP_ZOOM2)		+= board-zoom2.o \
+					   board-zoom-flash.o \
 					   mmc-twl4030.o \
 					   board-zoom-debugboard.o
 
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index 4a4b300..88bd54f 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -42,6 +42,7 @@ 
 #include <mach/control.h>
 #include <mach/usb.h>
 #include <mach/keypad.h>
+#include <mach/board-zoom.h>
 
 #include "mmc-twl4030.h"
 
@@ -385,6 +386,7 @@  static void __init omap_ldp_init(void)
 	ads7846_dev_init();
 	omap_serial_init(&ldp_uart_config);
 	usb_musb_init();
+	zoom_flash_init();
 
 	twl4030_mmc_init(mmc);
 	/* link regulators to MMC adapters */
diff --git a/arch/arm/mach-omap2/board-zoom-flash.c b/arch/arm/mach-omap2/board-zoom-flash.c
new file mode 100644
index 0000000..1007e5d
--- /dev/null
+++ b/arch/arm/mach-omap2/board-zoom-flash.c
@@ -0,0 +1,196 @@ 
+/*
+ * arch/arm/mach-omap2/board-zoom-flash.c
+ *
+ * Copyright (C) 2008-09 Texas Instruments Inc.
+ *
+ * Modified from mach-omap2/board-2430sdp-flash.c
+ * Author(s): Rohit Choraria <rohitkc@ti.com>
+ *            Vimal Singh <vimalsingh@ti.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.
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand.h>
+#include <linux/types.h>
+#include <linux/io.h>
+
+#include <asm/mach/flash.h>
+#include <mach/board.h>
+#include <mach/gpmc.h>
+#include <mach/nand.h>
+
+#include <mach/board-zoom.h>
+
+#define NAND_CMD_UNLOCK1	0x23
+#define NAND_CMD_UNLOCK2	0x24
+/**
+ * @brief platform specific unlock function
+ *
+ * @param mtd - mtd info
+ * @param ofs - offset to start unlock from
+ * @param len - length to unlock
+ *
+ * @return - unlock status
+ */
+static int omap_zoom_nand_unlock(struct mtd_info *mtd, loff_t ofs, size_t len)
+{
+	int ret = 0;
+	int chipnr;
+	int status;
+	unsigned long page;
+	struct nand_chip *this = mtd->priv;
+	printk(KERN_INFO "nand_unlock: start: %08x, length: %d!\n",
+			(int)ofs, (int)len);
+
+	/* select the NAND device */
+	chipnr = (int)(ofs >> this->chip_shift);
+	this->select_chip(mtd, chipnr);
+	/* check the WP bit */
+	this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
+	if ((this->read_byte(mtd) & 0x80) == 0) {
+		printk(KERN_ERR "nand_unlock: Device is write protected!\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if ((ofs & (mtd->writesize - 1)) != 0) {
+		printk(KERN_ERR "nand_unlock: Start address must be"
+				"beginning of nand page!\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	if (len == 0 || (len & (mtd->writesize - 1)) != 0) {
+		printk(KERN_ERR "nand_unlock: Length must be a multiple of "
+				"nand page size!\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	/* submit address of first page to unlock */
+	page = (unsigned long)(ofs >> this->page_shift);
+	this->cmdfunc(mtd, NAND_CMD_UNLOCK1, -1, page & this->pagemask);
+
+	/* submit ADDRESS of LAST page to unlock */
+	page += (unsigned long)((ofs + len) >> this->page_shift) ;
+	this->cmdfunc(mtd, NAND_CMD_UNLOCK2, -1, page & this->pagemask);
+
+	/* call wait ready function */
+	status = this->waitfunc(mtd, this);
+	udelay(1000);
+	/* see if device thinks it succeeded */
+	if (status & 0x01) {
+		/* there was an error */
+		printk(KERN_ERR "nand_unlock: error status =0x%08x ", status);
+		ret = -EIO;
+		goto out;
+	}
+
+ out:
+	/* de-select the NAND device */
+	this->select_chip(mtd, -1);
+	return ret;
+}
+
+static struct mtd_partition zoom_nand_partitions[] = {
+	/* All the partition sizes are listed in terms of NAND block size */
+	{
+		.name		= "X-Loader-NAND",
+		.offset		= 0,
+		.size		= 4 * (64 * 2048),	/* 512KB, 0x80000 */
+		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
+	},
+	{
+		.name		= "U-Boot-NAND",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
+		.size		= 10 * (64 * 2048),	/* 1.25MB, 0x140000 */
+		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
+	},
+	{
+		.name		= "Boot Env-NAND",
+		.offset		= MTDPART_OFS_APPEND,   /* Offset = 0x1c0000 */
+		.size		= 2 * (64 * 2048),	/* 256KB, 0x40000 */
+	},
+	{
+		.name		= "Kernel-NAND",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x0200000*/
+		.size		= 240 * (64 * 2048),	/* 30M, 0x1E00000 */
+	},
+#ifdef CONFIG_MACH_OMAP_ZOOM2
+	{
+		.name		= "system",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x2000000 */
+		.size		= 1280 * (64 * 2048),   /* 160M, 0xA000000 */
+	},
+	{
+		.name		= "userdata",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0xC000000 */
+		.size		= 256 * (64 * 2048),	/* 32M, 0x2000000 */
+	},
+	{
+		.name		= "cache",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0xE000000 */
+		.size		= 256 * (64 * 2048),	/* 32M, 0x2000000 */
+	},
+#else
+	{
+		.name		= "File System - NAND",
+		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x2000000 */
+		.size		= MTDPART_SIZ_FULL,	/* 96MB, 0x6000000 */
+	},
+#endif
+};
+
+/* NAND chip access: 16 bit */
+static struct omap_nand_platform_data zoom_nand_data = {
+	.parts		= zoom_nand_partitions,
+	.nr_parts	= ARRAY_SIZE(zoom_nand_partitions),
+	.nand_setup	= NULL,
+	.dma_channel	= -1,		/* disable DMA in OMAP NAND driver */
+	.dev_ready	= NULL,
+	.unlock		= omap_zoom_nand_unlock,
+};
+
+static struct resource zoom_nand_resource = {
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device zoom_nand_device = {
+	.name		= "omap2-nand",
+	.id		= 0,
+	.dev		= {
+	.platform_data	= &zoom_nand_data,
+	},
+	.num_resources	= 1,
+	.resource	= &zoom_nand_resource,
+};
+
+/**
+ * zoom_flash_init - Identify devices connected to GPMC and register.
+ *
+ * @return - void.
+ */
+void __init zoom_flash_init(void)
+{
+	u8 nandcs = GPMC_CS_NUM + 1;
+	u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
+
+	/* pop nand part */
+	nandcs = ZOOM_3430_NAND_CS;
+
+	zoom_nand_data.cs = nandcs;
+	zoom_nand_data.gpmc_cs_baseaddr = (void *)(gpmc_base_add +
+					GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
+	zoom_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
+
+	if (platform_device_register(&zoom_nand_device) < 0)
+		printk(KERN_ERR "Unable to register NAND device\n");
+}
+
diff --git a/arch/arm/mach-omap2/board-zoom2.c b/arch/arm/mach-omap2/board-zoom2.c
index 4d295d5..2142198 100644
--- a/arch/arm/mach-omap2/board-zoom2.c
+++ b/arch/arm/mach-omap2/board-zoom2.c
@@ -20,6 +20,7 @@ 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 
+#include <mach/board-zoom.h>
 #include <mach/common.h>
 #include <mach/usb.h>
 #include <mach/keypad.h>
@@ -271,6 +272,7 @@  static void __init omap_zoom2_init(void)
 	omap_serial_init(&zoom2_uart_config);
 	omap_zoom2_debugboard_init();
 	usb_musb_init();
+	zoom_flash_init();
 }
 
 static void __init omap_zoom2_map_io(void)
diff --git a/arch/arm/plat-omap/include/mach/board-zoom.h b/arch/arm/plat-omap/include/mach/board-zoom.h
new file mode 100644
index 0000000..af8850c
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/board-zoom.h
@@ -0,0 +1,36 @@ 
+/*
+ * arch/arm/plat-omap/include/mach/board-zoom.h
+ *
+ * Hardware definitions for TI OMAP3 LDP/ZOOM2.
+ *
+ * Copyright (C) 2008-09 Texas Instruments Inc.
+ *
+ * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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 __ASM_ARCH_OMAP_LDP_H
+#define __ASM_ARCH_OMAP_LDP_H
+
+extern void zoom_flash_init(void);
+
+#define ZOOM_3430_NAND_CS               0
+
+#endif /* __ASM_ARCH_OMAP_LDP_H */
diff --git a/arch/arm/plat-omap/include/mach/nand.h b/arch/arm/plat-omap/include/mach/nand.h
index 631a7be..6151985 100644
--- a/arch/arm/plat-omap/include/mach/nand.h
+++ b/arch/arm/plat-omap/include/mach/nand.h
@@ -18,6 +18,7 @@  struct omap_nand_platform_data {
 	int			nr_parts;
 	int			(*nand_setup)(void __iomem *);
 	int			(*dev_ready)(struct omap_nand_platform_data *);
+	int			(*unlock)(struct mtd_info *, loff_t, size_t);
 	int			dma_channel;
 	void __iomem		*gpmc_cs_baseaddr;
 	void __iomem		*gpmc_baseaddr;