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