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board-nhk8815.c

/*
 *  linux/arch/arm/mach-nomadik/board-8815nhk.c
 *
 *  Copyright (C) STMicroelectronics
 *
 * 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.
 *
 *  NHK15 board specifc driver definition
 */
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/amba/bus.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/onenand.h>
#include <linux/mtd/partitions.h>
#include <linux/io.h>
#include <asm/sizes.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/flash.h>

#include <plat/mtu.h>

#include <mach/setup.h>
#include <mach/nand.h>
#include <mach/fsmc.h>

/* Initial value for SRC control register: all timers use MXTAL/8 source */
#define SRC_CR_INIT_MASK      0x00007fff
#define SRC_CR_INIT_VAL       0x2aaa8000

/* These addresses span 16MB, so use three individual pages */
static struct resource nhk8815_nand_resources[] = {
      {
            .name = "nand_addr",
            .start = NAND_IO_ADDR,
            .end = NAND_IO_ADDR + 0xfff,
            .flags = IORESOURCE_MEM,
      }, {
            .name = "nand_cmd",
            .start = NAND_IO_CMD,
            .end = NAND_IO_CMD + 0xfff,
            .flags = IORESOURCE_MEM,
      }, {
            .name = "nand_data",
            .start = NAND_IO_DATA,
            .end = NAND_IO_DATA + 0xfff,
            .flags = IORESOURCE_MEM,
      }
};

static int nhk8815_nand_init(void)
{
      /* FSMC setup for nand chip select (8-bit nand in 8815NHK) */
      writel(0x0000000E, FSMC_PCR(0));
      writel(0x000D0A00, FSMC_PMEM(0));
      writel(0x00100A00, FSMC_PATT(0));

      /* enable access to the chip select area */
      writel(readl(FSMC_PCR(0)) | 0x04, FSMC_PCR(0));

      return 0;
}

/*
 * These partitions are the same as those used in the 2.6.20 release
 * shipped by the vendor; the first two partitions are mandated
 * by the boot ROM, and the bootloader area is somehow oversized...
 */
static struct mtd_partition nhk8815_partitions[] = {
      {
            .name = "X-Loader(NAND)",
            .offset = 0,
            .size = SZ_256K,
      }, {
            .name = "MemInit(NAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = SZ_256K,
      }, {
            .name = "BootLoader(NAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = SZ_2M,
      }, {
            .name = "Kernel zImage(NAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = 3 * SZ_1M,
      }, {
            .name = "Root Filesystem(NAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = 22 * SZ_1M,
      }, {
            .name = "User Filesystem(NAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = MTDPART_SIZ_FULL,
      }
};

static struct nomadik_nand_platform_data nhk8815_nand_data = {
      .parts            = nhk8815_partitions,
      .nparts           = ARRAY_SIZE(nhk8815_partitions),
      .options    = NAND_COPYBACK | NAND_CACHEPRG | NAND_NO_PADDING \
                  | NAND_NO_READRDY | NAND_NO_AUTOINCR,
      .init       = nhk8815_nand_init,
};

static struct platform_device nhk8815_nand_device = {
      .name       = "nomadik_nand",
      .dev        = {
            .platform_data = &nhk8815_nand_data,
      },
      .resource   = nhk8815_nand_resources,
      .num_resources    = ARRAY_SIZE(nhk8815_nand_resources),
};

/* These are the partitions for the OneNand device, different from above */
static struct mtd_partition nhk8815_onenand_partitions[] = {
      {
            .name = "X-Loader(OneNAND)",
            .offset = 0,
            .size = SZ_256K,
      }, {
            .name = "MemInit(OneNAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = SZ_256K,
      }, {
            .name = "BootLoader(OneNAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = SZ_2M-SZ_256K,
      }, {
            .name = "SysImage(OneNAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = 4 * SZ_1M,
      }, {
            .name = "Root Filesystem(OneNAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = 22 * SZ_1M,
      }, {
            .name = "User Filesystem(OneNAND)",
            .offset     = MTDPART_OFS_APPEND,
            .size = MTDPART_SIZ_FULL,
      }
};

static struct onenand_platform_data nhk8815_onenand_data = {
      .parts            = nhk8815_onenand_partitions,
      .nr_parts   = ARRAY_SIZE(nhk8815_onenand_partitions),
};

static struct resource nhk8815_onenand_resource[] = {
      {
            .start            = 0x30000000,
            .end        = 0x30000000 + SZ_128K - 1,
            .flags            = IORESOURCE_MEM,
      },
};

static struct platform_device nhk8815_onenand_device = {
      .name       = "onenand-flash",
      .id         = -1,
      .dev        = {
            .platform_data    = &nhk8815_onenand_data,
      },
      .resource   = nhk8815_onenand_resource,
      .num_resources    = ARRAY_SIZE(nhk8815_onenand_resource),
};

static void __init nhk8815_onenand_init(void)
{
#ifdef CONFIG_MTD_ONENAND
       /* Set up SMCS0 for OneNand */
      writel(0x000030db, FSMC_BCR(0));
      writel(0x02100551, FSMC_BTR(0));
#endif
}

#define __MEM_4K_RESOURCE(x) \
      .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}

static struct amba_device uart0_device = {
      .dev = { .init_name = "uart0" },
      __MEM_4K_RESOURCE(NOMADIK_UART0_BASE),
      .irq = {IRQ_UART0, NO_IRQ},
};

static struct amba_device uart1_device = {
      .dev = { .init_name = "uart1" },
      __MEM_4K_RESOURCE(NOMADIK_UART1_BASE),
      .irq = {IRQ_UART1, NO_IRQ},
};

static struct amba_device *amba_devs[] __initdata = {
      &uart0_device,
      &uart1_device,
};

static struct resource nhk8815_eth_resources[] = {
      {
            .name = "smc91x-regs",
            .start = 0x34000000 + 0x300,
            .end = 0x34000000 + SZ_64K - 1,
            .flags = IORESOURCE_MEM,
      }, {
            .start = NOMADIK_GPIO_TO_IRQ(115),
            .end = NOMADIK_GPIO_TO_IRQ(115),
            .flags = IORESOURCE_IRQ | IRQF_TRIGGER_RISING,
      }
};

static struct platform_device nhk8815_eth_device = {
      .name = "smc91x",
      .resource = nhk8815_eth_resources,
      .num_resources = ARRAY_SIZE(nhk8815_eth_resources),
};

static int __init nhk8815_eth_init(void)
{
      int gpio_nr = 115; /* hardwired in the board */
      int err;

      err = gpio_request(gpio_nr, "eth_irq");
      if (!err) err = nmk_gpio_set_mode(gpio_nr, NMK_GPIO_ALT_GPIO);
      if (!err) err = gpio_direction_input(gpio_nr);
      if (err)
            pr_err("Error %i in %s\n", err, __func__);
      return err;
}
device_initcall(nhk8815_eth_init);

static struct platform_device *nhk8815_platform_devices[] __initdata = {
      &nhk8815_nand_device,
      &nhk8815_onenand_device,
      &nhk8815_eth_device,
      /* will add more devices */
};

static void __init nomadik_timer_init(void)
{
      u32 src_cr;

      /* Configure timer sources in "system reset controller" ctrl reg */
      src_cr = readl(io_p2v(NOMADIK_SRC_BASE));
      src_cr &= SRC_CR_INIT_MASK;
      src_cr |= SRC_CR_INIT_VAL;
      writel(src_cr, io_p2v(NOMADIK_SRC_BASE));

      /* Save global pointer to mtu, used by platform timer code */
      mtu_base = io_p2v(NOMADIK_MTU0_BASE);

      nmdk_timer_init();
}

static struct sys_timer nomadik_timer = {
      .init = nomadik_timer_init,
};

static void __init nhk8815_platform_init(void)
{
      int i;

      cpu8815_platform_init();
      nhk8815_onenand_init();
      platform_add_devices(nhk8815_platform_devices,
                       ARRAY_SIZE(nhk8815_platform_devices));

      for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
            amba_device_register(amba_devs[i], &iomem_resource);
}

MACHINE_START(NOMADIK, "NHK8815")
      /* Maintainer: ST MicroElectronics */
      .boot_params      = 0x100,
      .map_io           = cpu8815_map_io,
      .init_irq   = cpu8815_init_irq,
      .timer            = &nomadik_timer,
      .init_machine     = nhk8815_platform_init,
MACHINE_END

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