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/*
* board-overo.c (Gumstix Overo)
*
* Initial code: Steve Sakoman <steve@sakoman.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., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/map.h>
#include <mach/board-overo.h>
#include <mach/board.h>
#include <mach/common.h>
#include <mach/gpio.h>
#include <mach/gpmc.h>
#include <mach/hardware.h>
#include <mach/nand.h>
#define NAND_BLOCK_SIZE SZ_128K
#define GPMC_CS0_BASE 0x60
#define GPMC_CS_SIZE 0x30
static struct mtd_partition overo_nand_partitions[] = {
{
.name = "xloader",
.offset = 0, /* Offset = 0x00000 */
.size = 4 * NAND_BLOCK_SIZE,
.mask_flags = MTD_WRITEABLE
},
{
.name = "uboot",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
.size = 14 * NAND_BLOCK_SIZE,
},
{
.name = "uboot environment",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x240000 */
.size = 2 * NAND_BLOCK_SIZE,
},
{
.name = "linux",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
.size = 32 * NAND_BLOCK_SIZE,
},
{
.name = "rootfs",
.offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
.size = MTDPART_SIZ_FULL,
},
};
static struct omap_nand_platform_data overo_nand_data = {
.parts = overo_nand_partitions,
.nr_parts = ARRAY_SIZE(overo_nand_partitions),
.dma_channel = -1, /* disable DMA in OMAP NAND driver */
};
static struct resource overo_nand_resource = {
.flags = IORESOURCE_MEM,
};
static struct platform_device overo_nand_device = {
.name = "omap2-nand",
.id = -1,
.dev = {
.platform_data = &overo_nand_data,
},
.num_resources = 1,
.resource = &overo_nand_resource,
};
static void __init overo_flash_init(void)
{
u8 cs = 0;
u8 nandcs = GPMC_CS_NUM + 1;
u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
/* find out the chip-select on which NAND exists */
while (cs < GPMC_CS_NUM) {
u32 ret = 0;
ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
if ((ret & 0xC00) == 0x800) {
printk(KERN_INFO "Found NAND on CS%d\n", cs);
if (nandcs > GPMC_CS_NUM)
nandcs = cs;
}
cs++;
}
if (nandcs > GPMC_CS_NUM) {
printk(KERN_INFO "NAND: Unable to find configuration "
"in GPMC\n ");
return;
}
if (nandcs < GPMC_CS_NUM) {
overo_nand_data.cs = nandcs;
overo_nand_data.gpmc_cs_baseaddr = (void *)
(gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
overo_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
if (platform_device_register(&overo_nand_device) < 0)
printk(KERN_ERR "Unable to register NAND device\n");
}
}
static struct omap_uart_config overo_uart_config __initdata = {
.enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
};
static int __init overo_i2c_init(void)
{
/* i2c2 pins are used for gpio */
omap_register_i2c_bus(3, 400, NULL, 0);
return 0;
}
static void __init overo_init_irq(void)
{
omap2_init_common_hw();
omap_init_irq();
omap_gpio_init();
}
static struct platform_device overo_lcd_device = {
.name = "overo_lcd",
.id = -1,
};
static struct omap_lcd_config overo_lcd_config __initdata = {
.ctrl_name = "internal",
};
static struct omap_board_config_kernel overo_config[] __initdata = {
{ OMAP_TAG_UART, &overo_uart_config },
{ OMAP_TAG_LCD, &overo_lcd_config },
};
static struct platform_device *overo_devices[] __initdata = {
&overo_lcd_device,
};
static void __init overo_init(void)
{
overo_i2c_init();
platform_add_devices(overo_devices, ARRAY_SIZE(overo_devices));
omap_board_config = overo_config;
omap_board_config_size = ARRAY_SIZE(overo_config);
omap_serial_init();
overo_flash_init();
if ((gpio_request(OVERO_GPIO_W2W_NRESET,
"OVERO_GPIO_W2W_NRESET") == 0) &&
(gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {
gpio_export(OVERO_GPIO_W2W_NRESET, 0);
gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
udelay(10);
gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
} else {
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_W2W_NRESET\n");
}
if ((gpio_request(OVERO_GPIO_BT_XGATE, "OVERO_GPIO_BT_XGATE") == 0) &&
(gpio_direction_output(OVERO_GPIO_BT_XGATE, 0) == 0))
gpio_export(OVERO_GPIO_BT_XGATE, 0);
else
printk(KERN_ERR "could not obtain gpio for OVERO_GPIO_BT_XGATE\n");
if ((gpio_request(OVERO_GPIO_BT_NRESET, "OVERO_GPIO_BT_NRESET") == 0) &&
(gpio_direction_output(OVERO_GPIO_BT_NRESET, 1) == 0)) {
gpio_export(OVERO_GPIO_BT_NRESET, 0);
gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
mdelay(6);
gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
} else {
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_BT_NRESET\n");
}
if ((gpio_request(OVERO_GPIO_USBH_CPEN, "OVERO_GPIO_USBH_CPEN") == 0) &&
(gpio_direction_output(OVERO_GPIO_USBH_CPEN, 1) == 0))
gpio_export(OVERO_GPIO_USBH_CPEN, 0);
else
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_USBH_CPEN\n");
if ((gpio_request(OVERO_GPIO_USBH_NRESET,
"OVERO_GPIO_USBH_NRESET") == 0) &&
(gpio_direction_output(OVERO_GPIO_USBH_NRESET, 1) == 0))
gpio_export(OVERO_GPIO_USBH_NRESET, 0);
else
printk(KERN_ERR "could not obtain gpio for "
"OVERO_GPIO_USBH_NRESET\n");
}
static void __init overo_map_io(void)
{
omap2_set_globals_343x();
omap2_map_common_io();
}
MACHINE_START(OVERO, "Gumstix Overo")
.phys_io = 0x48000000,
.io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
.boot_params = 0x80000100,
.map_io = overo_map_io,
.init_irq = overo_init_irq,
.init_machine = overo_init,
.timer = &omap_timer,
MACHINE_END
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