arch/arm/mach-mx3/mx31lite.c

   1 /*
   2  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   3  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   4  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <linux/types.h>
  22 #include <linux/init.h>
  23 #include <linux/kernel.h>
  24 #include <linux/memory.h>
  25
  26 #include <mach/hardware.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/time.h>
  30 #include <asm/mach/map.h>
  31 #include <mach/common.h>
  32 #include <asm/page.h>
  33 #include <asm/setup.h>
  34 #include <mach/board-mx31lite.h>
  35
  36 /*
  37  * This file contains the board-specific initialization routines.
  38  */
  39
  40 /*
  41  * This structure defines the MX31 memory map.
  42  */
  43 static struct map_desc mx31lite_io_desc[] __initdata = {
  44         {
  45                 .virtual = AIPS1_BASE_ADDR_VIRT,
  46                 .pfn = __phys_to_pfn(AIPS1_BASE_ADDR),
  47                 .length = AIPS1_SIZE,
  48                 .type = MT_DEVICE_NONSHARED
  49         }, {
  50                 .virtual = SPBA0_BASE_ADDR_VIRT,
  51                 .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
  52                 .length = SPBA0_SIZE,
  53                 .type = MT_DEVICE_NONSHARED
  54         }, {
  55                 .virtual = AIPS2_BASE_ADDR_VIRT,
  56                 .pfn = __phys_to_pfn(AIPS2_BASE_ADDR),
  57                 .length = AIPS2_SIZE,
  58                 .type = MT_DEVICE_NONSHARED
  59         }, {
  60                 .virtual = CS4_BASE_ADDR_VIRT,
  61                 .pfn = __phys_to_pfn(CS4_BASE_ADDR),
  62                 .length = CS4_SIZE,
  63                 .type = MT_DEVICE
  64         }
  65 };
  66
  67 /*
  68  * Set up static virtual mappings.
  69  */
  70 void __init mx31lite_map_io(void)
  71 {
  72         mxc_map_io();
  73         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
  74 }
  75
  76 /*
  77  * Board specific initialization.
  78  */
  79 static void __init mxc_board_init(void)
  80 {
  81 }
  82
  83 static void __init mx31lite_timer_init(void)
  84 {
  85         mxc_clocks_init(26000000);
  86         mxc_timer_init("ipg_clk.0");
  87 }
  88
  89 struct sys_timer mx31lite_timer = {
  90         .init   = mx31lite_timer_init,
  91 };
  92
  93 /*
  94  * The following uses standard kernel macros defined in arch.h in order to
  95  * initialize __mach_desc_MX31LITE data structure.
  96  */
  97
  98 MACHINE_START(MX31LITE, "LogicPD MX31 LITEKIT")
  99         /* Maintainer: Freescale Semiconductor, Inc. */
 100         .phys_io        = AIPS1_BASE_ADDR,
 101         .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 102         .boot_params    = PHYS_OFFSET + 0x100,
 103         .map_io         = mx31lite_map_io,
 104         .init_irq       = mxc_init_irq,
 105         .init_machine   = mxc_board_init,
 106         .timer          = &mx31lite_timer,
 107 MACHINE_END