| /* | |
| * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com> | |
| * | |
| * This program is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License as published by the | |
| * Free Software Foundation; either version 2 of the License, or (at your | |
| * option) any later version. | |
| */ | |
| #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_nocache(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); |