1/*
 2 * This program is free software; you can redistribute it and/or modify
 3 * it under the terms of the GNU General Public License version 2 as
 4 * published by the Free Software Foundation.
 5 */
 6#include <linux/kernel.h>
 7#include <linux/init.h>
 8#include <linux/reboot.h>
 9
10#include "iomap.h"
11#include "common.h"
12#include "control.h"
13#include "prm3xxx.h"
14
15#define TI81XX_PRM_DEVICE_RSTCTRL	0x00a0
16#define TI81XX_GLOBAL_RST_COLD		BIT(1)
17
18/**
19 * ti81xx_restart - trigger a software restart of the SoC
20 * @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
21 * @cmd: passed from the userspace program rebooting the system (if provided)
22 *
23 * Resets the SoC.  For @cmd, see the 'reboot' syscall in
24 * kernel/sys.c.  No return value.
25 *
26 * NOTE: Warm reset does not seem to work, may require resetting
27 * clocks to bypass mode.
28 */
29void ti81xx_restart(enum reboot_mode mode, const char *cmd)
30{
31	omap2_prm_set_mod_reg_bits(TI81XX_GLOBAL_RST_COLD, 0,
32				   TI81XX_PRM_DEVICE_RSTCTRL);
33	while (1);
34}