Logo Search packages:      
Sourcecode: linux version File versions  Download package

board-evm.c

/*
 * TI DaVinci EVM board support
 *
 * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com>
 *
 * 2007 (c) MontaVista Software, Inc. This file is licensed under
 * the terms of the GNU General Public License version 2. This program
 * is licensed "as is" without any warranty of any kind, whether express
 * or implied.
 */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>

#include <asm/setup.h>
#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>

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

#include <asm/arch/common.h>

/* other misc. init functions */
void __init davinci_psc_init(void);
void __init davinci_irq_init(void);
void __init davinci_map_common_io(void);
void __init davinci_init_common_hw(void);

/* NOR Flash base address set to CS0 by default */
#define NOR_FLASH_PHYS 0x02000000

static struct mtd_partition davinci_evm_partitions[] = {
      /* bootloader (U-Boot, etc) in first 4 sectors */
      {
            .name       = "bootloader",
            .offset           = 0,
            .size       = 4 * SZ_64K,
            .mask_flags = MTD_WRITEABLE, /* force read-only */
      },
      /* bootloader params in the next 1 sectors */
      {
            .name       = "params",
            .offset           = MTDPART_OFS_APPEND,
            .size       = SZ_64K,
            .mask_flags = 0,
      },
      /* kernel */
      {
            .name       = "kernel",
            .offset           = MTDPART_OFS_APPEND,
            .size       = SZ_2M,
            .mask_flags = 0
      },
      /* file system */
      {
            .name       = "filesystem",
            .offset           = MTDPART_OFS_APPEND,
            .size       = MTDPART_SIZ_FULL,
            .mask_flags = 0
      }
};

static struct physmap_flash_data davinci_evm_flash_data = {
      .width            = 2,
      .parts            = davinci_evm_partitions,
      .nr_parts   = ARRAY_SIZE(davinci_evm_partitions),
};

/* NOTE: CFI probe will correctly detect flash part as 32M, but EMIF
 * limits addresses to 16M, so using addresses past 16M will wrap */
static struct resource davinci_evm_flash_resource = {
      .start            = NOR_FLASH_PHYS,
      .end        = NOR_FLASH_PHYS + SZ_16M - 1,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device davinci_evm_flash_device = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev        = {
            .platform_data    = &davinci_evm_flash_data,
      },
      .num_resources    = 1,
      .resource   = &davinci_evm_flash_resource,
};

static struct platform_device *davinci_evm_devices[] __initdata = {
      &davinci_evm_flash_device,
};

static void __init
davinci_evm_map_io(void)
{
      davinci_map_common_io();
}

static __init void davinci_evm_init(void)
{
      davinci_psc_init();

#if defined(CONFIG_BLK_DEV_DAVINCI) || defined(CONFIG_BLK_DEV_DAVINCI_MODULE)
      printk(KERN_WARNING "WARNING: both IDE and NOR flash are enabled, "
             "but share pins.\n\t Disable IDE for NOR support.\n");
#endif

      platform_add_devices(davinci_evm_devices,
                       ARRAY_SIZE(davinci_evm_devices));
}

static __init void davinci_evm_irq_init(void)
{
      davinci_init_common_hw();
      davinci_irq_init();
}

MACHINE_START(DAVINCI_EVM, "DaVinci EVM")
      /* Maintainer: MontaVista Software <source@mvista.com> */
      .phys_io      = IO_PHYS,
      .io_pg_offst  = (io_p2v(IO_PHYS) >> 18) & 0xfffc,
      .boot_params  = (DAVINCI_DDR_BASE + 0x100),
      .map_io           = davinci_evm_map_io,
      .init_irq     = davinci_evm_irq_init,
      .timer            = &davinci_timer,
      .init_machine = davinci_evm_init,
MACHINE_END

Generated by  Doxygen 1.6.0   Back to index