52 lines
927 B
C
52 lines
927 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/sizes.h>
|
|
#include <asm/idle.h>
|
|
#include <asm/reboot.h>
|
|
|
|
#include <loongson1.h>
|
|
|
|
static void __iomem *wdt_reg_base;
|
|
|
|
static void ls1x_halt(void)
|
|
{
|
|
while (1) {
|
|
if (cpu_wait)
|
|
cpu_wait();
|
|
}
|
|
}
|
|
|
|
static void ls1x_restart(char *command)
|
|
{
|
|
__raw_writel(0x1, wdt_reg_base + WDT_EN);
|
|
__raw_writel(0x1, wdt_reg_base + WDT_TIMER);
|
|
__raw_writel(0x1, wdt_reg_base + WDT_SET);
|
|
|
|
ls1x_halt();
|
|
}
|
|
|
|
static void ls1x_power_off(void)
|
|
{
|
|
ls1x_halt();
|
|
}
|
|
|
|
static int __init ls1x_reboot_setup(void)
|
|
{
|
|
wdt_reg_base = ioremap(LS1X_WDT_BASE, (SZ_4 + SZ_8));
|
|
if (!wdt_reg_base)
|
|
panic("Failed to remap watchdog registers");
|
|
|
|
_machine_restart = ls1x_restart;
|
|
_machine_halt = ls1x_halt;
|
|
pm_power_off = ls1x_power_off;
|
|
|
|
return 0;
|
|
}
|
|
|
|
arch_initcall(ls1x_reboot_setup);
|