target/msm8974/meminfo.c

/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of The Linux Foundation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#if DEVICE_TREE /* If using device tree */

#include <reg.h>
#include <debug.h>
#include <malloc.h>
#include <smem.h>
#include <stdint.h>
#include <libfdt.h>
#include <platform/iomap.h>
#include <dev_tree.h>

/* Funtion to add the ram partition entries into device tree.
 * The function assumes that all the entire fixed memory regions should
 * be listed in the first bank of the passed in ddr regions.
 */
uint32_t target_dev_tree_mem(void *fdt, uint32_t memory_node_offset)
{
    struct smem_ram_ptable ram_ptable;
    unsigned int i;
	int ret = 0;

	/* Make sure RAM partition table is initialized */
	ASSERT(smem_ram_ptable_init(&ram_ptable));

     /* Calculating the size of the mem_info_ptr */
    for (i = 0 ; i < ram_ptable.len; i++)
    {
        if((ram_ptable.parts[i].category == SDRAM) &&
           (ram_ptable.parts[i].type == SYS_MEMORY))
        {

			/* Pass along all other usable memory regions to Linux */
			ret = dev_tree_add_mem_info(fdt,
										memory_node_offset,
										ram_ptable.parts[i].start,
										ram_ptable.parts[i].size);

			if (ret)
			{
				dprintf(CRITICAL, "Failed to add secondary banks memory addresses\n");
				goto target_dev_tree_mem_err;
			}

       }
    }

target_dev_tree_mem_err:

    return ret;
}

void *target_get_scratch_address(void)
{
	return ((void *)SCRATCH_ADDR);
}

unsigned target_get_max_flash_size(void)
{
	return (512 * 1024 * 1024);
}
#endif /* DEVICE_TREE */