arch/arm/mach-imx/mm-imx27.c

   1 /*
   2  * arch/arm/mach-imx/mm-imx27.c
   3  *
   4  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  18  * MA 02110-1301, USA.
  19  */
  20
  21 #include <linux/mm.h>
  22 #include <linux/init.h>
  23 #include <mach/hardware.h>
  24 #include <mach/common.h>
  25 #include <asm/pgtable.h>
  26 #include <asm/mach/map.h>
  27 #include <mach/gpio.h>
  28 #include <mach/irqs.h>
  29 #include <mach/iomux-v1.h>
  30
  31 /* MX27 memory map definition */
  32 static struct map_desc imx27_io_desc[] __initdata = {
  33         /*
  34          * this fixed mapping covers:
  35          * - AIPI1
  36          * - AIPI2
  37          * - AITC
  38          * - ROM Patch
  39          * - and some reserved space
  40          */
  41         imx_map_entry(MX27, AIPI, MT_DEVICE),
  42         /*
  43          * this fixed mapping covers:
  44          * - CSI
  45          * - ATA
  46          */
  47         imx_map_entry(MX27, SAHB1, MT_DEVICE),
  48         /*
  49          * this fixed mapping covers:
  50          * - EMI
  51          */
  52         imx_map_entry(MX27, X_MEMC, MT_DEVICE),
  53 };
  54
  55 /*
  56  * Initialize the memory map. It is called during the
  57  * system startup to create static physical to virtual
  58  * memory map for the IO modules.
  59  */
  60 void __init mx27_map_io(void)
  61 {
  62         iotable_init(imx27_io_desc, ARRAY_SIZE(imx27_io_desc));
  63 }
  64
  65 void __init imx27_init_early(void)
  66 {
  67         mxc_set_cpu_type(MXC_CPU_MX27);
  68         mxc_arch_reset_init(MX27_IO_ADDRESS(MX27_WDOG_BASE_ADDR));
  69         imx_iomuxv1_init(MX27_IO_ADDRESS(MX27_GPIO_BASE_ADDR),
  70                         MX27_NUM_GPIO_PORT);
  71 }
  72
  73 static struct mxc_gpio_port imx27_gpio_ports[] = {
  74         DEFINE_IMX_GPIO_PORT_IRQ(MX27, 0, 1, MX27_INT_GPIO),
  75         DEFINE_IMX_GPIO_PORT(MX27, 1, 2),
  76         DEFINE_IMX_GPIO_PORT(MX27, 2, 3),
  77         DEFINE_IMX_GPIO_PORT(MX27, 3, 4),
  78         DEFINE_IMX_GPIO_PORT(MX27, 4, 5),
  79         DEFINE_IMX_GPIO_PORT(MX27, 5, 6),
  80 };
  81
  82 void __init mx27_init_irq(void)
  83 {
  84         mxc_init_irq(MX27_IO_ADDRESS(MX27_AVIC_BASE_ADDR));
  85         mxc_gpio_init(imx27_gpio_ports, ARRAY_SIZE(imx27_gpio_ports));
  86 }