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  * 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 #include <mach/clockdomain.h>
  32 #include "clockdomains.h"
  33
  34 extern void omap_sram_init(void);
  35 extern int omap2_clk_init(void);
  36 extern void omap2_check_revision(void);
  37 extern void omap2_init_memory(void);
  38 extern void gpmc_init(void);
  39 extern void omapfb_reserve_sdram(void);
  40
  41 /*
  42  * The machine specific code may provide the extra mapping besides the
  43  * default mapping provided here.
  44  */
  45 static struct map_desc omap2_io_desc[] __initdata = {
  46         {
  47                 .virtual        = L3_24XX_VIRT,
  48                 .pfn            = __phys_to_pfn(L3_24XX_PHYS),
  49                 .length         = L3_24XX_SIZE,
  50                 .type           = MT_DEVICE
  51         },
  52         {
  53                 .virtual        = L4_24XX_VIRT,
  54                 .pfn            = __phys_to_pfn(L4_24XX_PHYS),
  55                 .length         = L4_24XX_SIZE,
  56                 .type           = MT_DEVICE
  57         },
  58 #ifdef CONFIG_ARCH_OMAP2430
  59         {
  60                 .virtual        = L4_WK_243X_VIRT,
  61                 .pfn            = __phys_to_pfn(L4_WK_243X_PHYS),
  62                 .length         = L4_WK_243X_SIZE,
  63                 .type           = MT_DEVICE
  64         },
  65         {
  66                 .virtual        = OMAP243X_GPMC_VIRT,
  67                 .pfn            = __phys_to_pfn(OMAP243X_GPMC_PHYS),
  68                 .length         = OMAP243X_GPMC_SIZE,
  69                 .type           = MT_DEVICE
  70         },
  71 #endif
  72         {
  73                 .virtual        = DSP_MEM_24XX_VIRT,
  74                 .pfn            = __phys_to_pfn(DSP_MEM_24XX_PHYS),
  75                 .length         = DSP_MEM_24XX_SIZE,
  76                 .type           = MT_DEVICE
  77         },
  78         {
  79                 .virtual        = DSP_IPI_24XX_VIRT,
  80                 .pfn            = __phys_to_pfn(DSP_IPI_24XX_PHYS),
  81                 .length         = DSP_IPI_24XX_SIZE,
  82                 .type           = MT_DEVICE
  83         },
  84         {
  85                 .virtual        = DSP_MMU_24XX_VIRT,
  86                 .pfn            = __phys_to_pfn(DSP_MMU_24XX_PHYS),
  87                 .length         = DSP_MMU_24XX_SIZE,
  88                 .type           = MT_DEVICE
  89         }
  90 };
  91
  92 void __init omap2_map_common_io(void)
  93 {
  94         iotable_init(omap2_io_desc, ARRAY_SIZE(omap2_io_desc));
  95
  96         /* Normally devicemaps_init() would flush caches and tlb after
  97          * mdesc->map_io(), but we must also do it here because of the CPU
  98          * revision check below.
  99          */
 100         local_flush_tlb_all();
 101         flush_cache_all();
 102
 103         omap2_check_revision();
 104         omap_sram_init();
 105         omapfb_reserve_sdram();
 106 }
 107
 108 void __init omap2_init_common_hw(void)
 109 {
 110         omap2_mux_init();
 111         pwrdm_init(powerdomains_omap);
 112         clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
 113         omap2_clk_init();
 114 /*
 115  * Need to Fix this for 2430
 116  */
 117 #ifndef CONFIG_ARCH_OMAP2430
 118         omap2_init_memory();
 119 #endif
 120         gpmc_init();
 121 }