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mx31ads.c

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/*
 *  Copyright (C) 2000 Deep Blue Solutions Ltd
 *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
 *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * 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/types.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/serial_8250.h>

#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/memory.h>
#include <asm/mach/map.h>
#include <asm/arch/common.h>

/*!
 * @file mx31ads.c
 *
 * @brief This file contains the board-specific initialization routines.
 *
 * @ingroup System
 */

#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
/*!
 * The serial port definition structure.
 */
static struct plat_serial8250_port serial_platform_data[] = {
      {
            .membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTA),
            .mapbase  = (unsigned long)(CS4_BASE_ADDR + PBC_SC16C652_UARTA),
            .irq      = EXPIO_INT_XUART_INTA,
            .uartclk  = 14745600,
            .regshift = 0,
            .iotype   = UPIO_MEM,
            .flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
      }, {
            .membase  = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTB),
            .mapbase  = (unsigned long)(CS4_BASE_ADDR + PBC_SC16C652_UARTB),
            .irq      = EXPIO_INT_XUART_INTB,
            .uartclk  = 14745600,
            .regshift = 0,
            .iotype   = UPIO_MEM,
            .flags    = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
      },
      {},
};

static struct platform_device serial_device = {
      .name = "serial8250",
      .id   = 0,
      .dev  = {
            .platform_data = serial_platform_data,
      },
};

static int __init mxc_init_extuart(void)
{
      return platform_device_register(&serial_device);
}
#else
static inline int mxc_init_extuart(void)
{
      return 0;
}
#endif

/*!
 * This structure defines static mappings for the i.MX31ADS board.
 */
00088 static struct map_desc mx31ads_io_desc[] __initdata = {
      {
            .virtual    = AIPS1_BASE_ADDR_VIRT,
            .pfn        = __phys_to_pfn(AIPS1_BASE_ADDR),
            .length           = AIPS1_SIZE,
            .type       = MT_NONSHARED_DEVICE
      }, {
            .virtual    = SPBA0_BASE_ADDR_VIRT,
            .pfn        = __phys_to_pfn(SPBA0_BASE_ADDR),
            .length           = SPBA0_SIZE,
            .type       = MT_NONSHARED_DEVICE
      }, {
            .virtual    = AIPS2_BASE_ADDR_VIRT,
            .pfn        = __phys_to_pfn(AIPS2_BASE_ADDR),
            .length           = AIPS2_SIZE,
            .type       = MT_NONSHARED_DEVICE
      }, {
            .virtual    = CS4_BASE_ADDR_VIRT,
            .pfn        = __phys_to_pfn(CS4_BASE_ADDR),
            .length           = CS4_SIZE / 2,
            .type       = MT_DEVICE
      },
};

/*!
 * Set up static virtual mappings.
 */
00115 void __init mx31ads_map_io(void)
{
      mxc_map_io();
      iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc));
}

/*!
 * Board specific initialization.
 */
00124 static void __init mxc_board_init(void)
{
      mxc_init_extuart();
}

/*
 * The following uses standard kernel macros defined in arch.h in order to
 * initialize __mach_desc_MX31ADS data structure.
 */
MACHINE_START(MX31ADS, "Freescale MX31ADS")
      /* Maintainer: Freescale Semiconductor, Inc. */
      .phys_io    = AIPS1_BASE_ADDR,
      .io_pg_offst      = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
      .boot_params    = PHYS_OFFSET + 0x100,
      .map_io         = mx31ads_map_io,
      .init_irq       = mxc_init_irq,
      .init_machine   = mxc_board_init,
      .timer          = &mxc_timer,
MACHINE_END

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