1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public
3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive
4*4882a593Smuzhiyun * for more details.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Reset an IP27.
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * Copyright (C) 1997, 1998, 1999, 2000, 06 by Ralf Baechle
9*4882a593Smuzhiyun * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun #include <linux/compiler.h>
12*4882a593Smuzhiyun #include <linux/kernel.h>
13*4882a593Smuzhiyun #include <linux/sched.h>
14*4882a593Smuzhiyun #include <linux/timer.h>
15*4882a593Smuzhiyun #include <linux/smp.h>
16*4882a593Smuzhiyun #include <linux/mmzone.h>
17*4882a593Smuzhiyun #include <linux/nodemask.h>
18*4882a593Smuzhiyun #include <linux/pm.h>
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun #include <asm/io.h>
21*4882a593Smuzhiyun #include <asm/irq.h>
22*4882a593Smuzhiyun #include <asm/reboot.h>
23*4882a593Smuzhiyun #include <asm/sgialib.h>
24*4882a593Smuzhiyun #include <asm/sn/addrs.h>
25*4882a593Smuzhiyun #include <asm/sn/agent.h>
26*4882a593Smuzhiyun #include <asm/sn/arch.h>
27*4882a593Smuzhiyun #include <asm/sn/gda.h>
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun #include "ip27-common.h"
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun void machine_restart(char *command) __noreturn;
32*4882a593Smuzhiyun void machine_halt(void) __noreturn;
33*4882a593Smuzhiyun void machine_power_off(void) __noreturn;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun #define noreturn while(1); /* Silence gcc. */
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun /* XXX How to pass the reboot command to the firmware??? */
ip27_machine_restart(char * command)38*4882a593Smuzhiyun static void ip27_machine_restart(char *command)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun #if 0
41*4882a593Smuzhiyun int i;
42*4882a593Smuzhiyun #endif
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun printk("Reboot started from CPU %d\n", smp_processor_id());
45*4882a593Smuzhiyun #ifdef CONFIG_SMP
46*4882a593Smuzhiyun smp_send_stop();
47*4882a593Smuzhiyun #endif
48*4882a593Smuzhiyun #if 0
49*4882a593Smuzhiyun for_each_online_node(i)
50*4882a593Smuzhiyun REMOTE_HUB_S(i, PROMOP_REG, PROMOP_REBOOT);
51*4882a593Smuzhiyun #else
52*4882a593Smuzhiyun LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
53*4882a593Smuzhiyun #endif
54*4882a593Smuzhiyun noreturn;
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun
ip27_machine_halt(void)57*4882a593Smuzhiyun static void ip27_machine_halt(void)
58*4882a593Smuzhiyun {
59*4882a593Smuzhiyun int i;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun #ifdef CONFIG_SMP
62*4882a593Smuzhiyun smp_send_stop();
63*4882a593Smuzhiyun #endif
64*4882a593Smuzhiyun for_each_online_node(i)
65*4882a593Smuzhiyun REMOTE_HUB_S(i, PROMOP_REG, PROMOP_RESTART);
66*4882a593Smuzhiyun LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
67*4882a593Smuzhiyun noreturn;
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
ip27_machine_power_off(void)70*4882a593Smuzhiyun static void ip27_machine_power_off(void)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun /* To do ... */
73*4882a593Smuzhiyun noreturn;
74*4882a593Smuzhiyun }
75*4882a593Smuzhiyun
ip27_reboot_setup(void)76*4882a593Smuzhiyun void ip27_reboot_setup(void)
77*4882a593Smuzhiyun {
78*4882a593Smuzhiyun _machine_restart = ip27_machine_restart;
79*4882a593Smuzhiyun _machine_halt = ip27_machine_halt;
80*4882a593Smuzhiyun pm_power_off = ip27_machine_power_off;
81*4882a593Smuzhiyun }
82