139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/**
|
|
* @file
|
|
* @brief GPMC specific NAND devices
|
|
*
|
|
* FileName: board/omap/devices-gpmc-nand.c
|
|
*
|
|
* GPMC NAND Devices such as those from Micron, Samsung are listed here
|
|
*/
|
|
/*
|
|
* (C) Copyright 2006-2008
|
|
* Texas Instruments, <www.ti.com>
|
|
* Nishanth Menon <x0nishan@ti.com>
|
|
*
|
|
* 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 <console.h>
|
|
#include <init.h>
|
|
#include <driver.h>
|
|
#include <clock.h>
|
|
#include <asm/io.h>
|
|
|
|
#include <mach/silicon.h>
|
|
#include <mach/gpmc.h>
|
|
#include <mach/gpmc_nand.h>
|
|
|
|
#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND
|
|
|
|
#define GPMC_CONF1_VALx8 0x00000800
|
|
#define GPMC_CONF1_VALx16 0x00001800
|
|
/* Set up the generic params */
|
|
#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND_LP_X8
|
|
#define GPMC_NAND_ECC_LAYOUT GPMC_NAND_ECC_LP_x8_LAYOUT
|
|
#define GPMC_CONF1_VAL GPMC_CONF1_VALx8
|
|
#define GPMC_NAND_DEV_WIDTH 8
|
|
#endif
|
|
|
|
#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND_LP_X16
|
|
#define GPMC_NAND_ECC_LAYOUT GPMC_NAND_ECC_LP_x16_LAYOUT
|
|
#define GPMC_CONF1_VAL GPMC_CONF1_VALx16
|
|
#define GPMC_NAND_DEV_WIDTH 16
|
|
#endif
|
|
|
|
#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND_SP_X8
|
|
#define GPMC_NAND_ECC_LAYOUT GPMC_NAND_ECC_SP_x8_LAYOUT
|
|
#define GPMC_CONF1_VAL GPMC_CONF1_VALx8
|
|
#define GPMC_NAND_DEV_WIDTH 8
|
|
#endif
|
|
|
|
#ifdef CONFIG_MACH_OMAP_GPMC_GENERICNAND_SP_X16
|
|
#define GPMC_NAND_ECC_LAYOUT GPMC_NAND_ECC_SP_x16_LAYOUT
|
|
#define GPMC_CONF1_VAL GPMC_CONF1_VALx16
|
|
#define GPMC_NAND_DEV_WIDTH 16
|
|
#endif
|
|
|
|
#ifdef CONFIG_NAND_OMAP_GPMC_HWECC
|
|
/**
|
|
* The following is the organization of ECC as expected by BootROM.
|
|
* Based on the type of device, this can vary. select the config accordingly
|
|
*/
|
|
static struct nand_ecclayout boot_rom_ecc = GPMC_NAND_ECC_LAYOUT;
|
|
#endif
|
|
|
|
/** GPMC timing for our nand device */
|
|
static struct gpmc_config nand_cfg = {
|
|
.cfg = {
|
|
GPMC_CONF1_VAL, /*CONF1 */
|
|
0x00141400, /*CONF2 */
|
|
0x00141400, /*CONF3 */
|
|
0x0F010F01, /*CONF4 */
|
|
0x010C1414, /*CONF5 */
|
|
#ifdef CONFIG_ARCH_OMAP3
|
|
/* Additional bits in OMAP3 */
|
|
0x1F040000 |
|
|
#endif
|
|
0x00000A80, /*CONF6 */
|
|
},
|
|
|
|
/* Nand: dont care about base address */
|
|
.base = 0x28000000,
|
|
/* GPMC address map as small as possible */
|
|
.size = GPMC_SIZE_16M,
|
|
};
|
|
|
|
/** NAND platform specific settings settings */
|
|
static struct gpmc_nand_platform_data nand_plat = {
|
|
.cs = CONFIG_MACH_OMAP_CS,
|
|
.device_width = GPMC_NAND_DEV_WIDTH,
|
|
.max_timeout = MSECOND,
|
|
.wait_mon_pin = 0,
|
|
#ifdef CONFIG_NAND_OMAP_GPMC_HWECC
|
|
.plat_options = NAND_HWECC_ENABLE,
|
|
.oob = &boot_rom_ecc,
|
|
#else
|
|
.plat_options = NAND_HWECC_DISABLE,
|
|
#endif
|
|
.priv = (void *)&nand_cfg,
|
|
};
|
|
|
|
/** NAND device definition */
|
|
static struct device_d gpmc_generic_nand_nand_device = {
|
|
.name = "gpmc_nand",
|
|
.map_base = OMAP_GPMC_BASE,
|
|
.size = 1024 * 4, /* GPMC size */
|
|
.platform_data = (void *)&nand_plat,
|
|
};
|
|
|
|
/**
|
|
* @brief gpmc_generic_nand_devices_init - init generic nand device
|
|
*
|
|
* @return success/fail based on device funtion
|
|
*/
|
|
static int gpmc_generic_nand_devices_init(void)
|
|
{
|
|
/* Configure GPMC CS before register */
|
|
gpmc_cs_config(nand_plat.cs, &nand_cfg);
|
|
return register_device(&gpmc_generic_nand_nand_device);
|
|
}
|
|
|
|
device_initcall(gpmc_generic_nand_devices_init);
|
|
|
|
#endif /* CONFIG_MACH_OMAP_GPMC_GENERICNAND */
|
|
|
|
/* All specific optimized nand configurations for GPMC NAND comes here */
|
|
|