arch/arm/mach-imx/mm-imx31.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/iomux-v3.h>
  29 #include <mach/gpio.h>
  30 #include <mach/irqs.h>
  31
  32 static struct map_desc mx31_io_desc[] __initdata = {
  33         imx_map_entry(MX31, X_MEMC, MT_DEVICE),
  34         imx_map_entry(MX31, AVIC, MT_DEVICE_NONSHARED),
  35         imx_map_entry(MX31, AIPS1, MT_DEVICE_NONSHARED),
  36         imx_map_entry(MX31, AIPS2, MT_DEVICE_NONSHARED),
  37         imx_map_entry(MX31, SPBA0, MT_DEVICE_NONSHARED),
  38 };
  39
  40 /*
  41  * This function initializes the memory map. It is called during the
  42  * system startup to create static physical to virtual memory mappings
  43  * for the IO modules.
  44  */
  45 void __init mx31_map_io(void)
  46 {
  47         iotable_init(mx31_io_desc, ARRAY_SIZE(mx31_io_desc));
  48 }
  49
  50 void __init imx31_init_early(void)
  51 {
  52         mxc_set_cpu_type(MXC_CPU_MX31);
  53         mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
  54 }
  55
  56 static struct mxc_gpio_port imx31_gpio_ports[] = {
  57         DEFINE_IMX_GPIO_PORT_IRQ(MX31, 0, 1, MX31_INT_GPIO1),
  58         DEFINE_IMX_GPIO_PORT_IRQ(MX31, 1, 2, MX31_INT_GPIO2),
  59         DEFINE_IMX_GPIO_PORT_IRQ(MX31, 2, 3, MX31_INT_GPIO3),
  60 };
  61
  62 void __init mx31_init_irq(void)
  63 {
  64         mxc_init_irq(MX31_IO_ADDRESS(MX31_AVIC_BASE_ADDR));
  65         mxc_gpio_init(imx31_gpio_ports, ARRAY_SIZE(imx31_gpio_ports));
  66 }