target/msm7627_surf/atags.c

/* Copyright (c) 2009-2010, Code Aurora Forum. 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 Code Aurora 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 BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <reg.h>
#include <debug.h>
#include <smem.h>

#define SIZE_1M               0x00100000

unsigned* target_atag_mem(unsigned* ptr)
{
	struct smem_ram_ptable ram_ptable;
	unsigned i = 0;

	if (smem_ram_ptable_init(&ram_ptable))
	{
		for (i = 0; i < ram_ptable.len; i++)
		{
			if ((ram_ptable.parts[i].attr == READWRITE)
				&& (ram_ptable.parts[i].domain == APPS_DOMAIN)
				&& (ram_ptable.parts[i].start != 0x0)
				&& (!(ram_ptable.parts[i].size < SIZE_1M)))
			{
				/* ATAG_MEM */
				*ptr++ = 4;
				*ptr++ = 0x54410002;
				/* FIXME: RAM partition table currently reports 2M extra
				  Fix this by subracting 2M, until modem ram partition table
				  starts reporting the right values.  Also need fixes for
				  RAM partition table to have emmc entries correct */
				if (target_is_emmc_boot())
					*ptr++ = ram_ptable.parts[i].size - (2*SIZE_1M) - (6*SIZE_1M);
				else
					*ptr++ = ram_ptable.parts[i].size - (2*SIZE_1M);

				*ptr++ = ram_ptable.parts[i].start;
			}
		}
	}
	else
	{
		dprintf(CRITICAL, "ERROR: Unable to read RAM partition\n");
		ASSERT(0);
	}
	return ptr;
}