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
  28 /* MX27 memory map definition */
  29 static struct map_desc imx27_io_desc[] __initdata = {
  30         /*
  31          * this fixed mapping covers:
  32          * - AIPI1
  33          * - AIPI2
  34          * - AITC
  35          * - ROM Patch
  36          * - and some reserved space
  37          */
  38         imx_map_entry(MX27, AIPI, MT_DEVICE),
  39         /*
  40          * this fixed mapping covers:
  41          * - CSI
  42          * - ATA
  43          */
  44         imx_map_entry(MX27, SAHB1, MT_DEVICE),
  45         /*
  46          * this fixed mapping covers:
  47          * - EMI
  48          */
  49         imx_map_entry(MX27, X_MEMC, MT_DEVICE),
  50 };
  51
  52 /*
  53  * Initialize the memory map. It is called during the
  54  * system startup to create static physical to virtual
  55  * memory map for the IO modules.
  56  */
  57 void __init mx27_map_io(void)
  58 {
  59         mxc_set_cpu_type(MXC_CPU_MX27);
  60         mxc_arch_reset_init(MX27_IO_ADDRESS(MX27_WDOG_BASE_ADDR));
  61
  62         iotable_init(imx27_io_desc, ARRAY_SIZE(imx27_io_desc));
  63 }
  64
  65 int imx27_register_gpios(void);
  66
  67 void __init mx27_init_irq(void)
  68 {
  69         mxc_init_irq(MX27_IO_ADDRESS(MX27_AVIC_BASE_ADDR));
  70         imx27_register_gpios();
  71 }