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board-omap3beagle.c

/*
 * linux/arch/arm/mach-omap2/board-omap3beagle.c
 *
 * Copyright (C) 2008 Texas Instruments
 *
 * Modified from mach-omap2/board-3430sdp.c
 *
 * Initial code: Syed Mohammed Khasim
 *
 * 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/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/nand.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/flash.h>

#include <mach/board.h>
#include <mach/common.h>
#include <mach/gpmc.h>
#include <mach/nand.h>


#define GPMC_CS0_BASE  0x60
#define GPMC_CS_SIZE   0x30

#define NAND_BLOCK_SIZE       SZ_128K

static struct mtd_partition omap3beagle_nand_partitions[] = {
      /* All the partition sizes are listed in terms of NAND block size */
      {
            .name       = "X-Loader",
            .offset           = 0,
            .size       = 4 * NAND_BLOCK_SIZE,
            .mask_flags = MTD_WRITEABLE,  /* force read-only */
      },
      {
            .name       = "U-Boot",
            .offset           = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
            .size       = 15 * NAND_BLOCK_SIZE,
            .mask_flags = MTD_WRITEABLE,  /* force read-only */
      },
      {
            .name       = "U-Boot Env",
            .offset           = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
            .size       = 1 * NAND_BLOCK_SIZE,
      },
      {
            .name       = "Kernel",
            .offset           = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
            .size       = 32 * NAND_BLOCK_SIZE,
      },
      {
            .name       = "File System",
            .offset           = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
            .size       = MTDPART_SIZ_FULL,
      },
};

static struct omap_nand_platform_data omap3beagle_nand_data = {
      .options    = NAND_BUSWIDTH_16,
      .parts            = omap3beagle_nand_partitions,
      .nr_parts   = ARRAY_SIZE(omap3beagle_nand_partitions),
      .dma_channel      = -1,       /* disable DMA in OMAP NAND driver */
      .nand_setup = NULL,
      .dev_ready  = NULL,
};

static struct resource omap3beagle_nand_resource = {
      .flags            = IORESOURCE_MEM,
};

static struct platform_device omap3beagle_nand_device = {
      .name       = "omap2-nand",
      .id         = -1,
      .dev        = {
            .platform_data    = &omap3beagle_nand_data,
      },
      .num_resources    = 1,
      .resource   = &omap3beagle_nand_resource,
};

static struct omap_uart_config omap3_beagle_uart_config __initdata = {
      .enabled_uarts    = ((1 << 0) | (1 << 1) | (1 << 2)),
};

static void __init omap3_beagle_init_irq(void)
{
      omap2_init_common_hw();
      omap_init_irq();
      omap_gpio_init();
}

static struct platform_device omap3_beagle_lcd_device = {
      .name       = "omap3beagle_lcd",
      .id         = -1,
};

static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
      .ctrl_name  = "internal",
};

static struct gpio_led gpio_leds[] = {
      {
            .name             = "beagleboard::usr0",
            .default_trigger  = "heartbeat",
            .gpio             = 150,
      },
      {
            .name             = "beagleboard::usr1",
            .default_trigger  = "mmc0",
            .gpio             = 149,
      },
};

static struct gpio_led_platform_data gpio_led_info = {
      .leds       = gpio_leds,
      .num_leds   = ARRAY_SIZE(gpio_leds),
};

static struct platform_device leds_gpio = {
      .name = "leds-gpio",
      .id   = -1,
      .dev  = {
            .platform_data    = &gpio_led_info,
      },
};

static struct gpio_keys_button gpio_buttons[] = {
      {
            .code             = BTN_EXTRA,
            .gpio             = 7,
            .desc             = "user",
            .wakeup                 = 1,
      },
};

static struct gpio_keys_platform_data gpio_key_info = {
      .buttons    = gpio_buttons,
      .nbuttons   = ARRAY_SIZE(gpio_buttons),
};

static struct platform_device keys_gpio = {
      .name = "gpio-keys",
      .id   = -1,
      .dev  = {
            .platform_data    = &gpio_key_info,
      },
};

static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
      { OMAP_TAG_UART,  &omap3_beagle_uart_config },
      { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
};

static struct platform_device *omap3_beagle_devices[] __initdata = {
      &omap3_beagle_lcd_device,
      &leds_gpio,
      &keys_gpio,
};

static void __init omap3beagle_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) {
            omap3beagle_nand_data.cs = nandcs;
            omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
                  (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
            omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);

            printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
            if (platform_device_register(&omap3beagle_nand_device) < 0)
                  printk(KERN_ERR "Unable to register NAND device\n");
      }
}

static void __init omap3_beagle_init(void)
{
      platform_add_devices(omap3_beagle_devices,
                  ARRAY_SIZE(omap3_beagle_devices));
      omap_board_config = omap3_beagle_config;
      omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
      omap_serial_init();
      omap3beagle_flash_init();
}

static void __init omap3_beagle_map_io(void)
{
      omap2_set_globals_343x();
      omap2_map_common_io();
}

MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
      /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
      .phys_io    = 0x48000000,
      .io_pg_offst      = ((0xd8000000) >> 18) & 0xfffc,
      .boot_params      = 0x80000100,
      .map_io           = omap3_beagle_map_io,
      .init_irq   = omap3_beagle_init_irq,
      .init_machine     = omap3_beagle_init,
      .timer            = &omap_timer,
MACHINE_END

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