firebee.c

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/***************************************************************************/

/*
 *  firebee.c -- extra startup code support for the FireBee boards
 *
 *  Copyright (C) 2011, Greg Ungerer ([email protected])
 */

/***************************************************************************/

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>

/***************************************************************************/

/*
 *  8MB of NOR flash fitted to the FireBee board.
 */
#define FLASH_PHYS_ADDR     0xe0000000  /* Physical address of flash */
#define FLASH_PHYS_SIZE     0x00800000  /* Size of flash */

#define PART_BOOT_START     0x00000000  /* Start at bottom of flash */
#define PART_BOOT_SIZE      0x00040000  /* 256k in size */
#define PART_IMAGE_START    0x00040000  /* Start after boot loader */
#define PART_IMAGE_SIZE     0x006c0000  /* Most of flash */
#define PART_FPGA_START     0x00700000  /* Start at offset 7MB */
#define PART_FPGA_SIZE      0x00100000  /* 1MB in size */

static struct mtd_partition firebee_flash_parts[] = {
    {
        .name   = "dBUG",
        .offset = PART_BOOT_START,
        .size   = PART_BOOT_SIZE,
    },
    {
        .name   = "FPGA",
        .offset = PART_FPGA_START,
        .size   = PART_FPGA_SIZE,
    },
    {
        .name   = "image",
        .offset = PART_IMAGE_START,
        .size   = PART_IMAGE_SIZE,
    },
};

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

static struct resource firebee_flash_resource = {
    .start      = FLASH_PHYS_ADDR,
    .end        = FLASH_PHYS_ADDR + FLASH_PHYS_SIZE,
    .flags      = IORESOURCE_MEM,
};

static struct platform_device firebee_flash = {
    .name       = "physmap-flash",
    .id     = 0,
    .dev        = {
        .platform_data = &firebee_flash_data,
    },
    .num_resources  = 1,
    .resource   = &firebee_flash_resource,
};

/***************************************************************************/

static int __init init_firebee(void)
{
    platform_device_register(&firebee_flash);
    return 0;
}

arch_initcall(init_firebee);

/***************************************************************************/