arch/arm/mach-mxs/mm.c

   1 /*
   2  * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  * The code contained herein is licensed under the GNU General Public
   5  * License.  You may obtain a copy of the GNU General Public License
   6  * Version 2 or later at the following locations:
   7  *
   8  * http://www.opensource.org/licenses/gpl-license.html
   9  * http://www.gnu.org/copyleft/gpl.html
  10  *
  11  * Create static mapping between physical to virtual memory.
  12  */
  13
  14 #include <linux/mm.h>
  15 #include <linux/init.h>
  16 #include <linux/pinctrl/machine.h>
  17
  18 #include <asm/mach/map.h>
  19
  20 #include <mach/mx23.h>
  21 #include <mach/mx28.h>
  22 #include <mach/common.h>
  23 #include <mach/iomux.h>
  24
  25 /*
  26  * Define the MX23 memory map.
  27  */
  28 static struct map_desc mx23_io_desc[] __initdata = {
  29         mxs_map_entry(MX23, OCRAM, MT_DEVICE),
  30         mxs_map_entry(MX23, IO, MT_DEVICE),
  31 };
  32
  33 /*
  34  * Define the MX28 memory map.
  35  */
  36 static struct map_desc mx28_io_desc[] __initdata = {
  37         mxs_map_entry(MX28, OCRAM, MT_DEVICE),
  38         mxs_map_entry(MX28, IO, MT_DEVICE),
  39 };
  40
  41 /*
  42  * This function initializes the memory map. It is called during the
  43  * system startup to create static physical to virtual memory mappings
  44  * for the IO modules.
  45  */
  46 void __init mx23_map_io(void)
  47 {
  48         iotable_init(mx23_io_desc, ARRAY_SIZE(mx23_io_desc));
  49 }
  50
  51 void __init mx23_init_irq(void)
  52 {
  53         icoll_init_irq();
  54 }
  55
  56 void __init mx28_map_io(void)
  57 {
  58         iotable_init(mx28_io_desc, ARRAY_SIZE(mx28_io_desc));
  59 }
  60
  61 void __init mx28_init_irq(void)
  62 {
  63         icoll_init_irq();
  64 }
  65
  66 void __init mx23_soc_init(void)
  67 {
  68         pinctrl_provide_dummies();
  69
  70         mxs_add_dma("imx23-dma-apbh", MX23_APBH_DMA_BASE_ADDR);
  71         mxs_add_dma("imx23-dma-apbx", MX23_APBX_DMA_BASE_ADDR);
  72
  73         mxs_add_gpio("imx23-gpio", 0, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO0);
  74         mxs_add_gpio("imx23-gpio", 1, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO1);
  75         mxs_add_gpio("imx23-gpio", 2, MX23_PINCTRL_BASE_ADDR, MX23_INT_GPIO2);
  76 }
  77
  78 void __init mx28_soc_init(void)
  79 {
  80         pinctrl_provide_dummies();
  81
  82         mxs_add_dma("imx28-dma-apbh", MX23_APBH_DMA_BASE_ADDR);
  83         mxs_add_dma("imx28-dma-apbx", MX23_APBX_DMA_BASE_ADDR);
  84
  85         mxs_add_gpio("imx28-gpio", 0, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO0);
  86         mxs_add_gpio("imx28-gpio", 1, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO1);
  87         mxs_add_gpio("imx28-gpio", 2, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO2);
  88         mxs_add_gpio("imx28-gpio", 3, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO3);
  89         mxs_add_gpio("imx28-gpio", 4, MX28_PINCTRL_BASE_ADDR, MX28_INT_GPIO4);
  90 }