arch/arm/mach-mx3/mm.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  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include <linux/mm.h>
  24 #include <linux/init.h>
  25 #include <mach/hardware.h>
  26 #include <asm/pgtable.h>
  27 #include <asm/mach/map.h>
  28 #include <mach/common.h>
  29
  30 /*!
  31  * @file mm.c
  32  *
  33  * @brief This file creates static virtual to physical mappings, common to all MX3 boards.
  34  *
  35  * @ingroup Memory
  36  */
  37
  38 /*!
  39  * This table defines static virtual address mappings for I/O regions.
  40  * These are the mappings common across all MX3 boards.
  41  */
  42 static struct map_desc mxc_io_desc[] __initdata = {
  43         {
  44                 .virtual        = X_MEMC_BASE_ADDR_VIRT,
  45                 .pfn            = __phys_to_pfn(X_MEMC_BASE_ADDR),
  46                 .length         = X_MEMC_SIZE,
  47                 .type           = MT_DEVICE
  48         }, {
  49                 .virtual        = AVIC_BASE_ADDR_VIRT,
  50                 .pfn            = __phys_to_pfn(AVIC_BASE_ADDR),
  51                 .length         = AVIC_SIZE,
  52                 .type           = MT_NONSHARED_DEVICE
  53         },
  54 };
  55
  56 /*!
  57  * This function initializes the memory map. It is called during the
  58  * system startup to create static physical to virtual memory mappings
  59  * for the IO modules.
  60  */
  61 void __init mxc_map_io(void)
  62 {
  63         iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
  64 }