// 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_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);