i.MX2 family: Add basic mach support (sources)

comment "MX2 family CPU support"

	depends on ARCH_MX2

comment "MX2 Platforms"

	depends on ARCH_MX2

#

# Makefile for the linux kernel.

#

# Object file lists.

obj-y	:=  system.o generic.o

   zreladdr-y	:= 0xA0008000

params_phys-y	:= 0xA0000100

initrd_phys-y	:= 0xA0800000

/*

 * generic.c

 *

 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)

 *

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

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA 02110-1301, USA.

 */

#include <linux/mm.h>

#include <linux/init.h>

#include <asm/hardware.h>

#include <asm/pgtable.h>

#include <asm/mach/map.h>

/* MX27 memory map definition */

static struct map_desc mxc_io_desc[] __initdata = {

	/*

	 * this fixed mapping covers:

	 * - AIPI1

	 * - AIPI2

	 * - AITC

	 * - ROM Patch

	 * - and some reserved space

	 */

	{

		.virtual = AIPI_BASE_ADDR_VIRT,

		.pfn = __phys_to_pfn(AIPI_BASE_ADDR),

		.length = AIPI_SIZE,

		.type = MT_DEVICE

	},

	/*

	 * this fixed mapping covers:

	 * - CSI

	 * - ATA

	 */

	{

		.virtual = SAHB1_BASE_ADDR_VIRT,

		.pfn = __phys_to_pfn(SAHB1_BASE_ADDR),

		.length = SAHB1_SIZE,

		.type = MT_DEVICE

	},

	/*

	 * this fixed mapping covers:

	 * - EMI

	 */

	{

		.virtual = X_MEMC_BASE_ADDR_VIRT,

		.pfn = __phys_to_pfn(X_MEMC_BASE_ADDR),

		.length = X_MEMC_SIZE,

		.type = MT_DEVICE

	}

};

/*

 * Initialize the memory map. It is called during the

 * system startup to create static physical to virtual

 * memory map for the IO modules.

 */

void __init mxc_map_io(void)

{

	iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));

}

/*

 * Copyright (C) 1999 ARM Limited

 * Copyright (C) 2000 Deep Blue Solutions Ltd

 * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.

 * Copyright 2008 Juergen Beisert, kernel@pengutronix.de

 *

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

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#include <linux/kernel.h>

#include <linux/clk.h>

#include <linux/io.h>

#include <asm/arch/hardware.h>

#include <asm/proc-fns.h>

#include <asm/system.h>

/*

 * Put the CPU into idle mode. It is called by default_idle()

 * in process.c file.

 */

void arch_idle(void)

{

	/*

	 * This should do all the clock switching

	 * and wait for interrupt tricks.

	 */

	cpu_do_idle();

}

#define WDOG_WCR_REG                    IO_ADDRESS(WDOG_BASE_ADDR)

#define WDOG_WCR_SRS                    (1 << 4)

/*

 * Reset the system. It is called by machine_restart().

 */

void arch_reset(char mode)

{

	struct clk *clk;

	clk = clk_get(NULL, "wdog_clk");

	if (!clk) {

		printk(KERN_ERR"Cannot activate the watchdog. Giving up\n");

		return;

	}

	clk_enable(clk);

	/* Assert SRS signal */

	__raw_writew(__raw_readw(WDOG_WCR_REG) & ~WDOG_WCR_SRS, WDOG_WCR_REG);

}