Logo Search packages:      
Sourcecode: linux version File versions

io.c

/*
 * linux/arch/arm/mach-omap2/io.c
 *
 * OMAP2 I/O mapping code
 *
 * Copyright (C) 2005 Nokia Corporation
 * Copyright (C) 2007 Texas Instruments
 *
 * Author:
 *    Juha Yrjola <juha.yrjola@nokia.com>
 *    Syed Khasim <x0khasim@ti.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>

#include <asm/tlb.h>

#include <asm/mach/map.h>

#include <mach/mux.h>
#include <mach/omapfb.h>
#include <mach/sram.h>

#include "memory.h"

#include "clock.h"

#include <mach/powerdomain.h>

#include "powerdomains.h"

#include <mach/clockdomain.h>
#include "clockdomains.h"

/*
 * The machine specific code may provide the extra mapping besides the
 * default mapping provided here.
 */

#ifdef CONFIG_ARCH_OMAP24XX
static struct map_desc omap24xx_io_desc[] __initdata = {
      {
            .virtual    = L3_24XX_VIRT,
            .pfn        = __phys_to_pfn(L3_24XX_PHYS),
            .length           = L3_24XX_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = L4_24XX_VIRT,
            .pfn        = __phys_to_pfn(L4_24XX_PHYS),
            .length           = L4_24XX_SIZE,
            .type       = MT_DEVICE
      },
};

#ifdef CONFIG_ARCH_OMAP2420
static struct map_desc omap242x_io_desc[] __initdata = {
      {
            .virtual    = DSP_MEM_24XX_VIRT,
            .pfn        = __phys_to_pfn(DSP_MEM_24XX_PHYS),
            .length           = DSP_MEM_24XX_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = DSP_IPI_24XX_VIRT,
            .pfn        = __phys_to_pfn(DSP_IPI_24XX_PHYS),
            .length           = DSP_IPI_24XX_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = DSP_MMU_24XX_VIRT,
            .pfn        = __phys_to_pfn(DSP_MMU_24XX_PHYS),
            .length           = DSP_MMU_24XX_SIZE,
            .type       = MT_DEVICE
      },
};

#endif

#ifdef CONFIG_ARCH_OMAP2430
static struct map_desc omap243x_io_desc[] __initdata = {
      {
            .virtual    = L4_WK_243X_VIRT,
            .pfn        = __phys_to_pfn(L4_WK_243X_PHYS),
            .length           = L4_WK_243X_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = OMAP243X_GPMC_VIRT,
            .pfn        = __phys_to_pfn(OMAP243X_GPMC_PHYS),
            .length           = OMAP243X_GPMC_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = OMAP243X_SDRC_VIRT,
            .pfn        = __phys_to_pfn(OMAP243X_SDRC_PHYS),
            .length           = OMAP243X_SDRC_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = OMAP243X_SMS_VIRT,
            .pfn        = __phys_to_pfn(OMAP243X_SMS_PHYS),
            .length           = OMAP243X_SMS_SIZE,
            .type       = MT_DEVICE
      },
};
#endif
#endif

#ifdef      CONFIG_ARCH_OMAP34XX
static struct map_desc omap34xx_io_desc[] __initdata = {
      {
            .virtual    = L3_34XX_VIRT,
            .pfn        = __phys_to_pfn(L3_34XX_PHYS),
            .length           = L3_34XX_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = L4_34XX_VIRT,
            .pfn        = __phys_to_pfn(L4_34XX_PHYS),
            .length           = L4_34XX_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = L4_WK_34XX_VIRT,
            .pfn        = __phys_to_pfn(L4_WK_34XX_PHYS),
            .length           = L4_WK_34XX_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = OMAP34XX_GPMC_VIRT,
            .pfn        = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
            .length           = OMAP34XX_GPMC_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = OMAP343X_SMS_VIRT,
            .pfn        = __phys_to_pfn(OMAP343X_SMS_PHYS),
            .length           = OMAP343X_SMS_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = OMAP343X_SDRC_VIRT,
            .pfn        = __phys_to_pfn(OMAP343X_SDRC_PHYS),
            .length           = OMAP343X_SDRC_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = L4_PER_34XX_VIRT,
            .pfn        = __phys_to_pfn(L4_PER_34XX_PHYS),
            .length           = L4_PER_34XX_SIZE,
            .type       = MT_DEVICE
      },
      {
            .virtual    = L4_EMU_34XX_VIRT,
            .pfn        = __phys_to_pfn(L4_EMU_34XX_PHYS),
            .length           = L4_EMU_34XX_SIZE,
            .type       = MT_DEVICE
      },
};
#endif

void __init omap2_map_common_io(void)
{
#if defined(CONFIG_ARCH_OMAP2420)
      iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
      iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
#endif

#if defined(CONFIG_ARCH_OMAP2430)
      iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
      iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
#endif

#if defined(CONFIG_ARCH_OMAP34XX)
      iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
#endif

      /* Normally devicemaps_init() would flush caches and tlb after
       * mdesc->map_io(), but we must also do it here because of the CPU
       * revision check below.
       */
      local_flush_tlb_all();
      flush_cache_all();

      omap2_check_revision();
      omap_sram_init();
      omapfb_reserve_sdram();
}

void __init omap2_init_common_hw(void)
{
      omap2_mux_init();
      pwrdm_init(powerdomains_omap);
      clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
      omap2_clk_init();
      omap2_init_memory();
      gpmc_init();
}

Generated by  Doxygen 1.6.0   Back to index