| /* |
| * 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); |
