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/*
* Joshua Henderson <joshua.henderson@microchip.com>
* Copyright (C) 2015 Microchip Technology Inc. All rights reserved.
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#include <linux/init.h>
#include <linux/pm.h>
#include <asm/reboot.h>
#include <asm/mach-pic32/pic32.h>
#define PIC32_RSWRST 0x10
static void pic32_halt(void)
{
while (1) {
__asm__(".set push;\n"
".set arch=r4000;\n"
"wait;\n"
".set pop;\n"
);
}
}
static void pic32_machine_restart(char *command)
{
void __iomem *reg =
ioremap(PIC32_BASE_RESET + PIC32_RSWRST, sizeof(u32));
pic32_syskey_unlock();
/* magic write/read */
__raw_writel(1, reg);
(void)__raw_readl(reg);
pic32_halt();
}
static void pic32_machine_halt(void)
{
local_irq_disable();
pic32_halt();
}
static int __init mips_reboot_setup(void)
{
_machine_restart = pic32_machine_restart;
_machine_halt = pic32_machine_halt;
pm_power_off = pic32_machine_halt;
return 0;
}
arch_initcall(mips_reboot_setup);
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