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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/arm/mach-ep93xx/micro9.c
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/*

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 *  linux/arch/arm/mach-ep93xx/micro9.c

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 *

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 * Copyright (C) 2006 Contec Steuerungstechnik & Automation GmbH

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 *                    Manfred Gruber <[email protected]>

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 * Copyright (C) 2009 Contec Steuerungstechnik & Automation GmbH

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 *                    Hubert Feurstein <[email protected]>

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 *

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 * This program is free software; you can redistribute it and/or modify

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 * it under the terms of the GNU General Public License version 2 as

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 * published by the Free Software Foundation.

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 */

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#include <linux/kernel.h>

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#include <linux/init.h>

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#include <linux/platform_device.h>

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#include <linux/io.h>

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#include <mach/hardware.h>

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#include <asm/mach-types.h>

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#include <asm/mach/arch.h>

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

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 * Micro9 NOR Flash

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 *

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 * Micro9-High has up to 64MB of 32-bit flash on CS1

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 * Micro9-Mid has up to 64MB of either 32-bit or 16-bit flash on CS1

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 * Micro9-Lite uses a separate MTD map driver for flash support

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 * Micro9-Slim has up to 64MB of either 32-bit or 16-bit flash on CS1

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

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static unsigned int __init micro9_detect_bootwidth(void)

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{

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	u32 v;

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	/* Detect the bus width of the external flash memory */

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	v = __raw_readl(EP93XX_SYSCON_SYSCFG);

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	if (v & EP93XX_SYSCON_SYSCFG_LCSN7)

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		return 4; /* 32-bit */

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	else

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		return 2; /* 16-bit */

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}

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static void __init micro9_register_flash(void)

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{

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	unsigned int width;

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	if (machine_is_micro9())

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		width = 4;

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	else if (machine_is_micro9m() || machine_is_micro9s())

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		width = micro9_detect_bootwidth();

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	else

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		width = 0;

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	if (width)

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		ep93xx_register_flash(width, EP93XX_CS1_PHYS_BASE, SZ_64M);

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}

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

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 * Micro9 Ethernet

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

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static struct ep93xx_eth_data __initdata micro9_eth_data = {

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	.phy_id		= 0x1f,

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};

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static void __init micro9_init_machine(void)

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{

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	ep93xx_init_devices();

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	ep93xx_register_eth(&micro9_eth_data, 1);

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	micro9_register_flash();

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}

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#ifdef CONFIG_MACH_MICRO9H

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MACHINE_START(MICRO9, "Contec Micro9-High")

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	/* Maintainer: Hubert Feurstein <[email protected]> */

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	.boot_params	= EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,

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	.map_io		= ep93xx_map_io,

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	.init_irq	= ep93xx_init_irq,

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	.timer		= &ep93xx_timer,

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	.init_machine	= micro9_init_machine,

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MACHINE_END

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#endif

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#ifdef CONFIG_MACH_MICRO9M

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MACHINE_START(MICRO9M, "Contec Micro9-Mid")

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	/* Maintainer: Hubert Feurstein <[email protected]> */

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	.boot_params	= EP93XX_SDCE3_PHYS_BASE_ASYNC + 0x100,

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	.map_io		= ep93xx_map_io,

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	.init_irq	= ep93xx_init_irq,

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	.timer		= &ep93xx_timer,

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	.init_machine	= micro9_init_machine,

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MACHINE_END

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#endif

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#ifdef CONFIG_MACH_MICRO9L

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MACHINE_START(MICRO9L, "Contec Micro9-Lite")

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	/* Maintainer: Hubert Feurstein <[email protected]> */

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	.boot_params	= EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,

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	.map_io		= ep93xx_map_io,

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	.init_irq	= ep93xx_init_irq,

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	.timer		= &ep93xx_timer,

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	.init_machine	= micro9_init_machine,

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MACHINE_END

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#endif

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#ifdef CONFIG_MACH_MICRO9S

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MACHINE_START(MICRO9S, "Contec Micro9-Slim")

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	/* Maintainer: Hubert Feurstein <[email protected]> */

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	.boot_params	= EP93XX_SDCE3_PHYS_BASE_ASYNC + 0x100,

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	.map_io		= ep93xx_map_io,

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	.init_irq	= ep93xx_init_irq,

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	.timer		= &ep93xx_timer,

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	.init_machine	= micro9_init_machine,

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MACHINE_END

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#endif

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