>From 76e86c500e247e231c975f0a5bf01e832bf460d6 Mon Sep 17 00:00:00 2001
From: Vimal Singh <vimalsingh@xxxxxx>
Date: Mon, 26 Oct 2009 14:25:26 +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 <vimalsingh@xxxxxx>
Signed-off-by: Vikram Pandita <vikram.pandita@xxxxxx>
---
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 <rohitkc@xxxxxx>
+ * Vimal Singh <vimalsingh@xxxxxx>
+ *
+ * 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;
+}
+
+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
+};
+
+/* 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");
+}
+
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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