u-boot/arch/arm/cpu/armv7/socfpga/misc.c

/*
 *  Copyright (C) 2012 Altera Corporation <www.altera.com>
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include <common.h>
#include <asm/io.h>
#include <asm/arch/reset_manager.h>

DECLARE_GLOBAL_DATA_PTR;

static const struct socfpga_reset_manager *reset_manager_base =
		(void *)SOCFPGA_RSTMGR_ADDRESS;

/*
 * Write the reset manager register to cause reset
 */
void reset_cpu(ulong addr)
{
	/* request a warm reset */
	writel(RSTMGR_CTRL_SWWARMRSTREQ_LSB, &reset_manager_base->ctrl);
	/*
	 * infinite loop here as watchdog will trigger and reset
	 * the processor
	 */
	while (1)
		;
}

/*
 * Release peripherals from reset based on handoff
 */
void reset_deassert_peripherals_handoff(void)
{
	writel(0, &reset_manager_base->per_mod_reset);
}

int dram_init(void)
{
	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
	return 0;
}