arch/arm/mach-epxa10db/mm.c

   1 /*
   2  *  linux/arch/arm/mach-epxa10db/mm.c
   3  *
   4  *  MM routines for Altera'a Epxa10db board
   5  *
   6  *  Copyright (C) 2001 Altera Corporation
   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 #include <linux/kernel.h>
  23 #include <linux/init.h>
  24
  25 #include <asm/hardware.h>
  26 #include <asm/io.h>
  27 #include <asm/sizes.h>
  28 #include <asm/page.h>
  29
  30 #include <asm/mach/map.h>
  31
  32 /* Page table mapping for I/O region */
  33
  34 static struct map_desc epxa10db_io_desc[] __initdata = {
  35         {
  36                 .virtual        = IO_ADDRESS(EXC_REGISTERS_BASE),
  37                 .pfn            = __phys_to_pfn(EXC_REGISTERS_BASE),
  38                 .length         = SZ_16K,
  39                 .type           = MT_DEVICE
  40         }, {
  41                 .virtual        = IO_ADDRESS(EXC_PLD_BLOCK0_BASE),
  42                 .pfn            = __phys_to_pfn(EXC_PLD_BLOCK0_BASE),
  43                 .length         = SZ_16K,
  44                 .type           = MT_DEVICE
  45         }, {
  46                 .virtual        = IO_ADDRESS(EXC_PLD_BLOCK1_BASE),
  47                 .pfn            =__phys_to_pfn(EXC_PLD_BLOCK1_BASE),
  48                 .length         = SZ_16K,
  49                 .type           = MT_DEVICE
  50         }, {
  51                 .virtual        = IO_ADDRESS(EXC_PLD_BLOCK2_BASE),
  52                 .physical       = __phys_to_pfn(EXC_PLD_BLOCK2_BASE),
  53                 .length         = SZ_16K,
  54                 .type           = MT_DEVICE
  55         }, {
  56                 .virtual        = IO_ADDRESS(EXC_PLD_BLOCK3_BASE),
  57                 .pfn            = __phys_to_pfn(EXC_PLD_BLOCK3_BASE),
  58                 .length         = SZ_16K,
  59                 .type           = MT_DEVICE
  60         }, {
  61                 .virtual        = FLASH_VADDR(EXC_EBI_BLOCK0_BASE),
  62                 .pfn            = __phys_to_pfn(EXC_EBI_BLOCK0_BASE),
  63                 .length         = SZ_16M,
  64                 .type           = MT_DEVICE
  65         }
  66 };
  67
  68 void __init epxa10db_map_io(void)
  69 {
  70         iotable_init(epxa10db_io_desc, ARRAY_SIZE(epxa10db_io_desc));
  71 }