arch/arm/mach-mxc91231/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 2004-2005 Freescale Semiconductor, Inc. All Rights Reserved.
   6  *    - add MXC specific definitions
   7  *  Copyright 2006 Motorola, Inc.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  */
  19
  20 #include <linux/mm.h>
  21 #include <linux/init.h>
  22 #include <mach/hardware.h>
  23 #include <mach/common.h>
  24 #include <asm/pgtable.h>
  25 #include <asm/mach/map.h>
  26
  27 /*
  28  * This structure defines the MXC memory map.
  29  */
  30 static struct map_desc mxc_io_desc[] __initdata = {
  31         {
  32                 .virtual        = MXC91231_L2CC_BASE_ADDR_VIRT,
  33                 .pfn            = __phys_to_pfn(MXC91231_L2CC_BASE_ADDR),
  34                 .length         = MXC91231_L2CC_SIZE,
  35                 .type           = MT_DEVICE,
  36         }, {
  37                 .virtual        = MXC91231_X_MEMC_BASE_ADDR_VIRT,
  38                 .pfn            = __phys_to_pfn(MXC91231_X_MEMC_BASE_ADDR),
  39                 .length         = MXC91231_X_MEMC_SIZE,
  40                 .type           = MT_DEVICE,
  41         }, {
  42                 .virtual        = MXC91231_ROMP_BASE_ADDR_VIRT,
  43                 .pfn            = __phys_to_pfn(MXC91231_ROMP_BASE_ADDR),
  44                 .length         = MXC91231_ROMP_SIZE,
  45                 .type           = MT_DEVICE,
  46         }, {
  47                 .virtual        = MXC91231_AVIC_BASE_ADDR_VIRT,
  48                 .pfn            = __phys_to_pfn(MXC91231_AVIC_BASE_ADDR),
  49                 .length         = MXC91231_AVIC_SIZE,
  50                 .type           = MT_DEVICE,
  51         }, {
  52                 .virtual        = MXC91231_AIPS1_BASE_ADDR_VIRT,
  53                 .pfn            = __phys_to_pfn(MXC91231_AIPS1_BASE_ADDR),
  54                 .length         = MXC91231_AIPS1_SIZE,
  55                 .type           = MT_DEVICE,
  56         }, {
  57                 .virtual        = MXC91231_SPBA0_BASE_ADDR_VIRT,
  58                 .pfn            = __phys_to_pfn(MXC91231_SPBA0_BASE_ADDR),
  59                 .length         = MXC91231_SPBA0_SIZE,
  60                 .type           = MT_DEVICE,
  61         }, {
  62                 .virtual        = MXC91231_SPBA1_BASE_ADDR_VIRT,
  63                 .pfn            = __phys_to_pfn(MXC91231_SPBA1_BASE_ADDR),
  64                 .length         = MXC91231_SPBA1_SIZE,
  65                 .type           = MT_DEVICE,
  66         }, {
  67                 .virtual        = MXC91231_AIPS2_BASE_ADDR_VIRT,
  68                 .pfn            = __phys_to_pfn(MXC91231_AIPS2_BASE_ADDR),
  69                 .length         = MXC91231_AIPS2_SIZE,
  70                 .type           = MT_DEVICE,
  71         },
  72 };
  73
  74 /*
  75  * This function initializes the memory map. It is called during the
  76  * system startup to create static physical to virtual memory map for
  77  * the IO modules.
  78  */
  79 void __init mxc91231_map_io(void)
  80 {
  81         mxc_set_cpu_type(MXC_CPU_MXC91231);
  82
  83         iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
  84 }
  85
  86 int mxc91231_register_gpios(void);
  87
  88 void __init mxc91231_init_irq(void)
  89 {
  90         mxc91231_register_gpios();
  91         mxc_init_irq(MXC91231_IO_ADDRESS(MXC91231_AVIC_BASE_ADDR));
  92 }