arch/arm/mach-omap2/io.c

   1 /*
   2  * linux/arch/arm/mach-omap2/io.c
   3  *
   4  * OMAP2 I/O mapping code
   5  *
   6  * Copyright (C) 2005 Nokia Corporation
   7  * Copyright (C) 2007 Texas Instruments
   8  *
   9  * Author:
  10  *      Juha Yrjola <juha.yrjola@nokia.com>
  11  *      Syed Khasim <x0khasim@ti.com>
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21
  22 #include <asm/tlb.h>
  23 #include <asm/io.h>
  24
  25 #include <asm/mach/map.h>
  26
  27 #include <mach/mux.h>
  28 #include <mach/omapfb.h>
  29 #include <mach/sram.h>
  30
  31 #include "memory.h"
  32
  33 #include "clock.h"
  34
  35 #include <mach/powerdomain.h>
  36
  37 #include "powerdomains.h"
  38
  39 #include <mach/clockdomain.h>
  40 #include "clockdomains.h"
  41
  42 /*
  43  * The machine specific code may provide the extra mapping besides the
  44  * default mapping provided here.
  45  */
  46 static struct map_desc omap2_io_desc[] __initdata = {
  47         {
  48                 .virtual        = L3_24XX_VIRT,
  49                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  50                 .length         = L3_24XX_SIZE,
  51                 .type           = MT_DEVICE
  52         },
  53         {
  54                 .virtual        = L4_24XX_VIRT,
  55                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  56                 .length         = L4_24XX_SIZE,
  57                 .type           = MT_DEVICE
  58         },
  59 #ifdef CONFIG_ARCH_OMAP2430
  60         {
  61                 .virtual        = L4_WK_243X_VIRT,
  62                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  63                 .length         = L4_WK_243X_SIZE,
  64                 .type           = MT_DEVICE
  65         },
  66         {
  67                 .virtual        = OMAP243X_GPMC_VIRT,
  68                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
  69                 .length         = OMAP243X_GPMC_SIZE,
  70                 .type           = MT_DEVICE
  71         },
  72 #endif
  73         {
  74                 .virtual        = DSP_MEM_24XX_VIRT,
  75                 .pfn            = __phys_to_pfn(DSP_MEM_24XX_PHYS),
  76                 .length         = DSP_MEM_24XX_SIZE,
  77                 .type           = MT_DEVICE
  78         },
  79         {
  80                 .virtual        = DSP_IPI_24XX_VIRT,
  81                 .pfn            = __phys_to_pfn(DSP_IPI_24XX_PHYS),
  82                 .length         = DSP_IPI_24XX_SIZE,
  83                 .type           = MT_DEVICE
  84         },
  85         {
  86                 .virtual        = DSP_MMU_24XX_VIRT,
  87                 .pfn            = __phys_to_pfn(DSP_MMU_24XX_PHYS),
  88                 .length         = DSP_MMU_24XX_SIZE,
  89                 .type           = MT_DEVICE
  90         }
  91 };
  92
  93 void __init omap2_map_common_io(void)
  94 {
  95         iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc));
  96
  97         /* Normally devicemaps_init() would flush caches and tlb after
  98          * mdesc->map_io(), but we must also do it here because of the CPU
  99          * revision check below.
 100          */
 101         local_flush_tlb_all();
 102         flush_cache_all();
 103
 104         omap2_check_revision();
 105         omap_sram_init();
 106         omapfb_reserve_sdram();
 107 }
 108
 109 void __init omap2_init_common_hw(void)
 110 {
 111         omap2_mux_init();
 112         pwrdm_init(powerdomains_omap);
 113         clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
 114         omap2_clk_init();
 115 /*
 116  * Need to Fix this for 2430
 117  */
 118 #ifndef CONFIG_ARCH_OMAP2430
 119         omap2_init_memory();
 120 #endif
 121         gpmc_init();
 122 }