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/*
* omap3-restart.c - Code common to all OMAP3xxx machines.
*
* Copyright (C) 2009, 2012 Texas Instruments
* Copyright (C) 2010 Nokia Corporation
* Tony Lindgren <tony@atomide.com>
* Santosh Shilimkar <santosh.shilimkar@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include "iomap.h"
#include "common.h"
#include "control.h"
#include "prm3xxx.h"
/* Global address base setup code */
/**
* omap3xxx_restart - trigger a software restart of the SoC
* @mode: the "reboot mode", see arch/arm/kernel/{setup,process}.c
* @cmd: passed from the userspace program rebooting the system (if provided)
*
* Resets the SoC. For @cmd, see the 'reboot' syscall in
* kernel/sys.c. No return value.
*/
static int in_panic;
static int panic_prep_restart(struct notifier_block *this,
unsigned long event, void *ptr)
{
in_panic = 1;
return NOTIFY_DONE;
}
static struct notifier_block panic_block = {
.notifier_call = panic_prep_restart,
};
void omap3xxx_restart(char mode, const char *cmd)
{
if (cmd != NULL) {
if ((strncmp(cmd, "bootloader", 10)) &&
(strncmp(cmd, "recovery", 8)))
cmd = NULL;
}
if (in_panic)
cmd = "panic";
omap3_ctrl_write_boot_mode((cmd ? (u8)*cmd : 0));
omap3xxx_prm_dpll3_reset(); /* never returns */
while (1);
}
static int __init omap3xxx_restart_init(void)
{
atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
return 0;
}
early_initcall(omap3xxx_restart_init);
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