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MIPS: ralink: adds reset code 

Resetting these SoCs requires no real magic. The code is straight forward.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4891/
hifive-unleashed-5.1
John Crispin 2013-01-20 22:00:57 +01:00
parent 19d3814e7b
commit c06e836ada
1 changed files with 44 additions and 0 deletions
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44
arch/mips/ralink/reset.c 100644
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/*
* 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.
*
* Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
* Copyright (C) 2013 John Crispin <blogic@openwrt.org>
*/
#include <linux/pm.h>
#include <linux/io.h>
#include <asm/reboot.h>
#include <asm/mach-ralink/ralink_regs.h>
/* Reset Control */
#define SYSC_REG_RESET_CTRL 0x034
#define RSTCTL_RESET_SYSTEM BIT(0)
static void ralink_restart(char *command)
{
local_irq_disable();
rt_sysc_w32(RSTCTL_RESET_SYSTEM, SYSC_REG_RESET_CTRL);
unreachable();
}
static void ralink_halt(void)
{
local_irq_disable();
unreachable();
}
static int __init mips_reboot_setup(void)
{
_machine_restart = ralink_restart;
_machine_halt = ralink_halt;
pm_power_off = ralink_halt;
return 0;
}
arch_initcall(mips_reboot_setup);