* Vimal Singh <[email protected]> [091110 02:08]:
> From 6f535d7128ca392458dd0cb31d138cda84747c06 Mon Sep 17 00:00:00 2001
> From: Vimal Singh <[email protected]>
> Date: Tue, 10 Nov 2009 11:42:45 +0530
> Subject: [PATCH] OMAP3: Add support for NAND on ZOOM2/LDP boards
>
> 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.
>
> Signed-off-by: Vimal Singh <[email protected]>
> Signed-off-by: Vikram Pandita <[email protected]>
> ---
> 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/plat/board-zoom.h | 36 +++++
> arch/arm/plat-omap/include/plat/nand.h | 2 +
> 6 files changed, 240 insertions(+), 0 deletions(-)
> create mode 100644 arch/arm/mach-omap2/board-zoom-flash.c
> create mode 100644 arch/arm/plat-omap/include/plat/board-zoom.h
>
> diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
> index 627f500..b3a9d1c 100644
> --- a/arch/arm/mach-omap2/Makefile
> +++ b/arch/arm/mach-omap2/Makefile
> @@ -59,6 +59,7 @@ 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
> @@ -74,6 +75,7 @@ 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
> obj-$(CONFIG_MACH_CM_T35) += board-cm-t35.o \
> diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
> index c062238..8aebdf9 100644
> --- a/arch/arm/mach-omap2/board-ldp.c
> +++ b/arch/arm/mach-omap2/board-ldp.c
> @@ -42,6 +42,7 @@
> #include <asm/delay.h>
> #include <plat/control.h>
> #include <plat/usb.h>
> +#include <plat/board-zoom.h>
>
> #include "mmc-twl4030.h"
>
> @@ -385,6 +386,7 @@ static void __init omap_ldp_init(void)
> ads7846_dev_init();
> omap_serial_init();
> 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..1406a57
> --- /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 <[email protected]>
> + * Vimal Singh <[email protected]>
> + *
> + * 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 <plat/board.h>
> +#include <plat/gpmc.h>
> +#include <plat/nand.h>
> +
> +#include <plat/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_ldp_nand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_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;
> +}
Isn't the unlocking generic to the NAND device driver? Or is it somehow board
specific?
> +static struct mtd_partition ldp_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
Please remove the ifdefs, you should be able to compile in all mach-omap2
boards into the same kernel binary. You should set the size dynamically as
needed.
> +};
> +
> +/* NAND chip access: 16 bit */
> +static struct omap_nand_platform_data ldp_nand_data = {
> + .parts = ldp_nand_partitions,
> + .nr_parts = ARRAY_SIZE(ldp_nand_partitions),
> + .nand_setup = NULL,
> + .dma_channel = -1, /* disable DMA in OMAP NAND driver */
> + .dev_ready = NULL,
> + .unlock = omap_ldp_nand_unlock,
> +};
> +
> +static struct resource ldp_nand_resource = {
> + .flags = IORESOURCE_MEM,
> +};
> +
> +static struct platform_device ldp_nand_device = {
> + .name = "omap2-nand",
> + .id = 0,
> + .dev = {
> + .platform_data = &ldp_nand_data,
> + },
> + .num_resources = 1,
> + .resource = &ldp_nand_resource,
> +};
> +
> +/**
> + * ldp430_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 = LDP3430_NAND_CS;
> +
> + ldp_nand_data.cs = nandcs;
> + ldp_nand_data.gpmc_cs_baseaddr = (void *)(gpmc_base_add +
> + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
> + ldp_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
> +
> + if (platform_device_register(&ldp_nand_device) < 0)
> + printk(KERN_ERR "Unable to register NAND device\n");
> +}
This too should use gpmc_cs_request().
> +
> diff --git a/arch/arm/mach-omap2/board-zoom2.c
> b/arch/arm/mach-omap2/board-zoom2.c
> index 4ad9b94..b4101ae 100644
> --- a/arch/arm/mach-omap2/board-zoom2.c
> +++ b/arch/arm/mach-omap2/board-zoom2.c
> @@ -21,6 +21,7 @@
> #include <asm/mach-types.h>
> #include <asm/mach/arch.h>
>
> +#include <plat/board-zoom.h>
> #include <plat/common.h>
> #include <plat/usb.h>
>
> @@ -273,6 +274,7 @@ static void __init omap_zoom2_init(void)
> omap_serial_init();
> 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/plat/board-zoom.h
> b/arch/arm/plat-omap/include/plat/board-zoom.h
> new file mode 100644
> index 0000000..d414ea5
> --- /dev/null
> +++ b/arch/arm/plat-omap/include/plat/board-zoom.h
> @@ -0,0 +1,36 @@
> +/*
> + * arch/arm/plat-omap/include/plat/board-ldp.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 LDP3430_NAND_CS 0
> +
> +#endif /* __ASM_ARCH_OMAP_LDP_H */
> diff --git a/arch/arm/plat-omap/include/plat/nand.h
> b/arch/arm/plat-omap/include/plat/nand.h
> index 631a7be..3c2d434 100644
> --- a/arch/arm/plat-omap/include/plat/nand.h
> +++ b/arch/arm/plat-omap/include/plat/nand.h
> @@ -18,6 +18,8 @@ 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 *mtd, loff_t ofs,
> + uint64_t len);
> int dma_channel;
> void __iomem *gpmc_cs_baseaddr;
> void __iomem *gpmc_baseaddr;
> --
> 1.5.5
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