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