micro9.c

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/*
 *  linux/arch/arm/mach-ep93xx/micro9.c
 *
 * Copyright (C) 2006 Contec Steuerungstechnik & Automation GmbH
 *                    Manfred Gruber <[email protected]>
 * Copyright (C) 2009 Contec Steuerungstechnik & Automation GmbH
 *                    Hubert Feurstein <[email protected]>
 *
 * 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/io.h>

#include <mach/hardware.h>

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

#include "soc.h"

/*************************************************************************
 * Micro9 NOR Flash
 *
 * Micro9-High has up to 64MB of 32-bit flash on CS1
 * Micro9-Mid has up to 64MB of either 32-bit or 16-bit flash on CS1
 * Micro9-Lite uses a separate MTD map driver for flash support
 * Micro9-Slim has up to 64MB of either 32-bit or 16-bit flash on CS1
 *************************************************************************/
static unsigned int __init micro9_detect_bootwidth(void)
{
    u32 v;

    /* Detect the bus width of the external flash memory */
    v = __raw_readl(EP93XX_SYSCON_SYSCFG);
    if (v & EP93XX_SYSCON_SYSCFG_LCSN7)
        return 4; /* 32-bit */
    else
        return 2; /* 16-bit */
}

static void __init micro9_register_flash(void)
{
    unsigned int width;

    if (machine_is_micro9())
        width = 4;
    else if (machine_is_micro9m() || machine_is_micro9s())
        width = micro9_detect_bootwidth();
    else
        width = 0;

    if (width)
        ep93xx_register_flash(width, EP93XX_CS1_PHYS_BASE, SZ_64M);
}


/*************************************************************************
 * Micro9 Ethernet
 *************************************************************************/
static struct ep93xx_eth_data __initdata micro9_eth_data = {
    .phy_id     = 0x1f,
};


static void __init micro9_init_machine(void)
{
    ep93xx_init_devices();
    ep93xx_register_eth(&micro9_eth_data, 1);
    micro9_register_flash();
}


#ifdef CONFIG_MACH_MICRO9H
MACHINE_START(MICRO9, "Contec Micro9-High")
    /* Maintainer: Hubert Feurstein <[email protected]> */
    .atag_offset    = 0x100,
    .map_io     = ep93xx_map_io,
    .init_irq   = ep93xx_init_irq,
    .handle_irq = vic_handle_irq,
    .timer      = &ep93xx_timer,
    .init_machine   = micro9_init_machine,
    .init_late  = ep93xx_init_late,
    .restart    = ep93xx_restart,
MACHINE_END
#endif

#ifdef CONFIG_MACH_MICRO9M
MACHINE_START(MICRO9M, "Contec Micro9-Mid")
    /* Maintainer: Hubert Feurstein <[email protected]> */
    .atag_offset    = 0x100,
    .map_io     = ep93xx_map_io,
    .init_irq   = ep93xx_init_irq,
    .handle_irq = vic_handle_irq,
    .timer      = &ep93xx_timer,
    .init_machine   = micro9_init_machine,
    .init_late  = ep93xx_init_late,
    .restart    = ep93xx_restart,
MACHINE_END
#endif

#ifdef CONFIG_MACH_MICRO9L
MACHINE_START(MICRO9L, "Contec Micro9-Lite")
    /* Maintainer: Hubert Feurstein <[email protected]> */
    .atag_offset    = 0x100,
    .map_io     = ep93xx_map_io,
    .init_irq   = ep93xx_init_irq,
    .handle_irq = vic_handle_irq,
    .timer      = &ep93xx_timer,
    .init_machine   = micro9_init_machine,
    .init_late  = ep93xx_init_late,
    .restart    = ep93xx_restart,
MACHINE_END
#endif

#ifdef CONFIG_MACH_MICRO9S
MACHINE_START(MICRO9S, "Contec Micro9-Slim")
    /* Maintainer: Hubert Feurstein <[email protected]> */
    .atag_offset    = 0x100,
    .map_io     = ep93xx_map_io,
    .init_irq   = ep93xx_init_irq,
    .handle_irq = vic_handle_irq,
    .timer      = &ep93xx_timer,
    .init_machine   = micro9_init_machine,
    .init_late  = ep93xx_init_late,
    .restart    = ep93xx_restart,
MACHINE_END
#endif