arch/arm/mach-imx/mm-imx21.c

   1 /*
   2  * arch/arm/mach-imx/mm-imx21.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 #include <mach/irqs.h>
  28 #include <mach/iomux-v1.h>
  29
  30 /* MX21 memory map definition */
  31 static struct map_desc imx21_io_desc[] __initdata = {
  32         /*
  33          * this fixed mapping covers:
  34          * - AIPI1
  35          * - AIPI2
  36          * - AITC
  37          * - ROM Patch
  38          * - and some reserved space
  39          */
  40         imx_map_entry(MX21, AIPI, MT_DEVICE),
  41         /*
  42          * this fixed mapping covers:
  43          * - CSI
  44          * - ATA
  45          */
  46         imx_map_entry(MX21, SAHB1, MT_DEVICE),
  47         /*
  48          * this fixed mapping covers:
  49          * - EMI
  50          */
  51         imx_map_entry(MX21, X_MEMC, MT_DEVICE),
  52 };
  53
  54 /*
  55  * Initialize the memory map. It is called during the
  56  * system startup to create static physical to virtual
  57  * memory map for the IO modules.
  58  */
  59 void __init mx21_map_io(void)
  60 {
  61         iotable_init(imx21_io_desc, ARRAY_SIZE(imx21_io_desc));
  62 }
  63
  64 void __init imx21_init_early(void)
  65 {
  66         mxc_set_cpu_type(MXC_CPU_MX21);
  67         mxc_arch_reset_init(MX21_IO_ADDRESS(MX21_WDOG_BASE_ADDR));
  68         imx_iomuxv1_init(MX21_IO_ADDRESS(MX21_GPIO_BASE_ADDR),
  69                         MX21_NUM_GPIO_PORT);
  70 }
  71
  72 void __init mx21_init_irq(void)
  73 {
  74         mxc_init_irq(MX21_IO_ADDRESS(MX21_AVIC_BASE_ADDR));
  75 }
  76
  77 void __init imx21_soc_init(void)
  78 {
  79         mxc_register_gpio("imx21-gpio", 0, MX21_GPIO1_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  80         mxc_register_gpio("imx21-gpio", 1, MX21_GPIO2_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  81         mxc_register_gpio("imx21-gpio", 2, MX21_GPIO3_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  82         mxc_register_gpio("imx21-gpio", 3, MX21_GPIO4_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  83         mxc_register_gpio("imx21-gpio", 4, MX21_GPIO5_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  84         mxc_register_gpio("imx21-gpio", 5, MX21_GPIO6_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  85 }