1 /*
2 * BRIEF MODULE DESCRIPTION
3 * Galileo EV96100 reset routines.
4 *
5 * Copyright 2000 MontaVista Software Inc.
6 * Author: MontaVista Software, Inc.
7 * ppopov@mvista.com or source@mvista.com
8 *
9 * This file was derived from Carsten Langgaard's
10 * arch/mips/mips-boards/generic/reset.c
11 *
12 * Carsten Langgaard, carstenl@mips.com
13 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
14 *
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License as published by the
17 * Free Software Foundation; either version 2 of the License, or (at your
18 * option) any later version.
19 *
20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
21 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
23 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
26 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
27 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * You should have received a copy of the GNU General Public License along
32 * with this program; if not, write to the Free Software Foundation, Inc.,
33 * 675 Mass Ave, Cambridge, MA 02139, USA.
34 */
35 #include <linux/sched.h>
36 #include <linux/mm.h>
37 #include <asm/io.h>
38 #include <asm/pgtable.h>
39 #include <asm/processor.h>
40 #include <asm/reboot.h>
41 #include <asm/system.h>
42 #include <asm/gt64120/gt64120.h>
43
44 static void mips_machine_restart(char *command);
45 static void mips_machine_halt(void);
46
mips_machine_restart(char * command)47 static void mips_machine_restart(char *command)
48 {
49 set_c0_status(ST0_BEV | ST0_ERL);
50 change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
51 flush_cache_all();
52 write_c0_wired(0);
53 __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
54 while (1);
55 }
56
mips_machine_halt(void)57 static void mips_machine_halt(void)
58 {
59 printk(KERN_NOTICE "You can safely turn off the power\n");
60 while (1)
61 __asm__(".set\tmips3\n\t"
62 "wait\n\t"
63 ".set\tmips0");
64 }
65
mips_reboot_setup(void)66 void mips_reboot_setup(void)
67 {
68 _machine_restart = mips_machine_restart;
69 _machine_halt = mips_machine_halt;
70 }
71