arch/arm/mach-mx5/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
  17 #include <asm/mach/map.h>
  18
  19 #include <mach/hardware.h>
  20 #include <mach/common.h>
  21 #include <mach/iomux-v3.h>
  22
  23 /*
  24  * Define the MX51 memory map.
  25  */
  26 static struct map_desc mx51_io_desc[] __initdata = {
  27         imx_map_entry(MX51, IRAM, MT_DEVICE),
  28         imx_map_entry(MX51, DEBUG, MT_DEVICE),
  29         imx_map_entry(MX51, AIPS1, MT_DEVICE),
  30         imx_map_entry(MX51, SPBA0, MT_DEVICE),
  31         imx_map_entry(MX51, AIPS2, MT_DEVICE),
  32 };
  33
  34 /*
  35  * Define the MX53 memory map.
  36  */
  37 static struct map_desc mx53_io_desc[] __initdata = {
  38         imx_map_entry(MX53, AIPS1, MT_DEVICE),
  39         imx_map_entry(MX53, SPBA0, MT_DEVICE),
  40         imx_map_entry(MX53, AIPS2, MT_DEVICE),
  41 };
  42
  43 /*
  44  * This function initializes the memory map. It is called during the
  45  * system startup to create static physical to virtual memory mappings
  46  * for the IO modules.
  47  */
  48 void __init mx51_map_io(void)
  49 {
  50         iotable_init(mx51_io_desc, ARRAY_SIZE(mx51_io_desc));
  51 }
  52
  53 void __init imx51_init_early(void)
  54 {
  55         mxc_set_cpu_type(MXC_CPU_MX51);
  56         mxc_iomux_v3_init(MX51_IO_ADDRESS(MX51_IOMUXC_BASE_ADDR));
  57         mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG1_BASE_ADDR));
  58 }
  59
  60 void __init mx53_map_io(void)
  61 {
  62         iotable_init(mx53_io_desc, ARRAY_SIZE(mx53_io_desc));
  63 }
  64
  65 void __init imx53_init_early(void)
  66 {
  67         mxc_set_cpu_type(MXC_CPU_MX53);
  68         mxc_iomux_v3_init(MX53_IO_ADDRESS(MX53_IOMUXC_BASE_ADDR));
  69         mxc_arch_reset_init(MX53_IO_ADDRESS(MX53_WDOG1_BASE_ADDR));
  70 }
  71
  72 int imx51_register_gpios(void);
  73
  74 void __init mx51_init_irq(void)
  75 {
  76         unsigned long tzic_addr;
  77         void __iomem *tzic_virt;
  78
  79         if (mx51_revision() < IMX_CHIP_REVISION_2_0)
  80                 tzic_addr = MX51_TZIC_BASE_ADDR_TO1;
  81         else
  82                 tzic_addr = MX51_TZIC_BASE_ADDR;
  83
  84         tzic_virt = ioremap(tzic_addr, SZ_16K);
  85         if (!tzic_virt)
  86                 panic("unable to map TZIC interrupt controller\n");
  87
  88         tzic_init_irq(tzic_virt);
  89         imx51_register_gpios();
  90 }
  91
  92 int imx53_register_gpios(void);
  93
  94 void __init mx53_init_irq(void)
  95 {
  96         unsigned long tzic_addr;
  97         void __iomem *tzic_virt;
  98
  99         tzic_addr = MX53_TZIC_BASE_ADDR;
 100
 101         tzic_virt = ioremap(tzic_addr, SZ_16K);
 102         if (!tzic_virt)
 103                 panic("unable to map TZIC interrupt controller\n");
 104
 105         tzic_init_irq(tzic_virt);
 106         imx53_register_gpios();
 107 }