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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ip27-reset.c (1778B)

      1/*
      2 * This file is subject to the terms and conditions of the GNU General Public
      3 * License.  See the file "COPYING" in the main directory of this archive
      4 * for more details.
      5 *
      6 * Reset an IP27.
      7 *
      8 * Copyright (C) 1997, 1998, 1999, 2000, 06 by Ralf Baechle
      9 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
     10 */
     11#include <linux/compiler.h>
     12#include <linux/kernel.h>
     13#include <linux/sched.h>
     14#include <linux/timer.h>
     15#include <linux/smp.h>
     16#include <linux/mmzone.h>
     17#include <linux/nodemask.h>
     18#include <linux/pm.h>
     19
     20#include <asm/io.h>
     21#include <asm/irq.h>
     22#include <asm/reboot.h>
     23#include <asm/sgialib.h>
     24#include <asm/sn/addrs.h>
     25#include <asm/sn/agent.h>
     26#include <asm/sn/arch.h>
     27#include <asm/sn/gda.h>
     28
     29#include "ip27-common.h"
     30
     31void machine_restart(char *command) __noreturn;
     32void machine_halt(void) __noreturn;
     33void machine_power_off(void) __noreturn;
     34
     35#define noreturn while(1);				/* Silence gcc.	 */
     36
     37/* XXX How to pass the reboot command to the firmware??? */
     38static void ip27_machine_restart(char *command)
     39{
     40#if 0
     41	int i;
     42#endif
     43
     44	printk("Reboot started from CPU %d\n", smp_processor_id());
     45#ifdef CONFIG_SMP
     46	smp_send_stop();
     47#endif
     48#if 0
     49	for_each_online_node(i)
     50		REMOTE_HUB_S(i, PROMOP_REG, PROMOP_REBOOT);
     51#else
     52	LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
     53#endif
     54	noreturn;
     55}
     56
     57static void ip27_machine_halt(void)
     58{
     59	int i;
     60
     61#ifdef CONFIG_SMP
     62	smp_send_stop();
     63#endif
     64	for_each_online_node(i)
     65		REMOTE_HUB_S(i, PROMOP_REG, PROMOP_RESTART);
     66	LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
     67	noreturn;
     68}
     69
     70static void ip27_machine_power_off(void)
     71{
     72	/* To do ...  */
     73	noreturn;
     74}
     75
     76void ip27_reboot_setup(void)
     77{
     78	_machine_restart = ip27_machine_restart;
     79	_machine_halt = ip27_machine_halt;
     80	pm_power_off = ip27_machine_power_off;
     81}