cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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reset.c (927B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
      4 */
      5
      6#include <linux/io.h>
      7#include <linux/pm.h>
      8#include <linux/sizes.h>
      9#include <asm/idle.h>
     10#include <asm/reboot.h>
     11
     12#include <loongson1.h>
     13
     14static void __iomem *wdt_reg_base;
     15
     16static void ls1x_halt(void)
     17{
     18	while (1) {
     19		if (cpu_wait)
     20			cpu_wait();
     21	}
     22}
     23
     24static void ls1x_restart(char *command)
     25{
     26	__raw_writel(0x1, wdt_reg_base + WDT_EN);
     27	__raw_writel(0x1, wdt_reg_base + WDT_TIMER);
     28	__raw_writel(0x1, wdt_reg_base + WDT_SET);
     29
     30	ls1x_halt();
     31}
     32
     33static void ls1x_power_off(void)
     34{
     35	ls1x_halt();
     36}
     37
     38static int __init ls1x_reboot_setup(void)
     39{
     40	wdt_reg_base = ioremap(LS1X_WDT_BASE, (SZ_4 + SZ_8));
     41	if (!wdt_reg_base)
     42		panic("Failed to remap watchdog registers");
     43
     44	_machine_restart = ls1x_restart;
     45	_machine_halt = ls1x_halt;
     46	pm_power_off = ls1x_power_off;
     47
     48	return 0;
     49}
     50
     51arch_initcall(ls1x_reboot_setup);