/*
 * This file is part of the coreboot project.
 *
 * Copyright 2014 Google Inc.
 *
 * 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; version 2 of the License.
 *
 * 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 St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <cbmem.h>
#include <soc/addressmap.h>

void *cbmem_top(void)
{
	static uintptr_t addr;
	size_t fb_size;

	/*
	 * FIXME(adurbin): The TZ registers are not accessible to the AVP.
	 * Therefore, if there is a TZ carveout then it needs to be handled
	 * here while executing on the AVP in order to properly place the
	 * CBMEM region.
	 */

	/* CBMEM starts downwards from the framebuffer. */
	if (addr == 0)
		addr = framebuffer_attributes(&fb_size);

	return (void *)(addr << 20UL);
}