arch/arm/mach-imx/mm-imx25.c

   1 /*
   2  *  Copyright (C) 1999,2000 Arm Limited
   3  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   4  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   5  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   6  *    - add MX31 specific definitions
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <linux/mm.h>
  20 #include <linux/init.h>
  21 #include <linux/err.h>
  22
  23 #include <asm/pgtable.h>
  24 #include <asm/mach/map.h>
  25
  26 #include <mach/common.h>
  27 #include <mach/hardware.h>
  28 #include <mach/mx25.h>
  29 #include <mach/iomux-v3.h>
  30 #include <mach/gpio.h>
  31 #include <mach/irqs.h>
  32
  33 /*
  34  * This table defines static virtual address mappings for I/O regions.
  35  * These are the mappings common across all MX25 boards.
  36  */
  37 static struct map_desc mx25_io_desc[] __initdata = {
  38         imx_map_entry(MX25, AVIC, MT_DEVICE_NONSHARED),
  39         imx_map_entry(MX25, AIPS1, MT_DEVICE_NONSHARED),
  40         imx_map_entry(MX25, AIPS2, MT_DEVICE_NONSHARED),
  41 };
  42
  43 /*
  44  * This function initializes the memory map. It is called during the
  45  * system startup to create static physical to virtual memory mappings
  46  * for the IO modules.
  47  */
  48 void __init mx25_map_io(void)
  49 {
  50         iotable_init(mx25_io_desc, ARRAY_SIZE(mx25_io_desc));
  51 }
  52
  53 void __init imx25_init_early(void)
  54 {
  55         mxc_set_cpu_type(MXC_CPU_MX25);
  56         mxc_iomux_v3_init(MX25_IO_ADDRESS(MX25_IOMUXC_BASE_ADDR));
  57         mxc_arch_reset_init(MX25_IO_ADDRESS(MX25_WDOG_BASE_ADDR));
  58 }
  59
  60 static struct mxc_gpio_port imx25_gpio_ports[] = {
  61         DEFINE_IMX_GPIO_PORT_IRQ(MX25, 0, 1, MX25_INT_GPIO1),
  62         DEFINE_IMX_GPIO_PORT_IRQ(MX25, 1, 2, MX25_INT_GPIO2),
  63         DEFINE_IMX_GPIO_PORT_IRQ(MX25, 2, 3, MX25_INT_GPIO3),
  64         DEFINE_IMX_GPIO_PORT_IRQ(MX25, 3, 4, MX25_INT_GPIO4),
  65 };
  66
  67 void __init mx25_init_irq(void)
  68 {
  69         mxc_init_irq(MX25_IO_ADDRESS(MX25_AVIC_BASE_ADDR));
  70         mxc_gpio_init(imx25_gpio_ports, ARRAY_SIZE(imx25_gpio_ports));
  71 }
  72