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generic.c

/*
 * generic.c
 *
 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#include <linux/mm.h>
#include <linux/init.h>
#include <mach/hardware.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>

/* MX27 memory map definition */
static struct map_desc mxc_io_desc[] __initdata = {
      /*
       * this fixed mapping covers:
       * - AIPI1
       * - AIPI2
       * - AITC
       * - ROM Patch
       * - and some reserved space
       */
      {
            .virtual = AIPI_BASE_ADDR_VIRT,
            .pfn = __phys_to_pfn(AIPI_BASE_ADDR),
            .length = AIPI_SIZE,
            .type = MT_DEVICE
      },
      /*
       * this fixed mapping covers:
       * - CSI
       * - ATA
       */
      {
            .virtual = SAHB1_BASE_ADDR_VIRT,
            .pfn = __phys_to_pfn(SAHB1_BASE_ADDR),
            .length = SAHB1_SIZE,
            .type = MT_DEVICE
      },
      /*
       * this fixed mapping covers:
       * - EMI
       */
      {
            .virtual = X_MEMC_BASE_ADDR_VIRT,
            .pfn = __phys_to_pfn(X_MEMC_BASE_ADDR),
            .length = X_MEMC_SIZE,
            .type = MT_DEVICE
      }
};

/*
 * Initialize the memory map. It is called during the
 * system startup to create static physical to virtual
 * memory map for the IO modules.
 */
void __init mxc_map_io(void)
{
      iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
}

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