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  * Carsten Langgaard, carstenl@mips.com
7  * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
8  */
9 #include <linux/io.h>
10 #include <linux/pm.h>
11 
12 #include <asm/reboot.h>
13 #include <asm/mach-malta/malta-pm.h>
14 
15 #define SOFTRES_REG	0x1f000500
16 #define GORESET		0x42
17 
mips_machine_restart(char * command)18 static void mips_machine_restart(char *command)
19 {
20 	unsigned int __iomem *softres_reg =
21 		ioremap(SOFTRES_REG, sizeof(unsigned int));
22 
23 	__raw_writel(GORESET, softres_reg);
24 }
25 
mips_machine_halt(void)26 static void mips_machine_halt(void)
27 {
28 	while (true);
29 }
30 
mips_machine_power_off(void)31 static void mips_machine_power_off(void)
32 {
33 	mips_pm_suspend(PIIX4_FUNC3IO_PMCNTRL_SUS_TYP_SOFF);
34 
35 	pr_info("Failed to power down, resetting\n");
36 	mips_machine_restart(NULL);
37 }
38 
mips_reboot_setup(void)39 static int __init mips_reboot_setup(void)
40 {
41 	_machine_restart = mips_machine_restart;
42 	_machine_halt = mips_machine_halt;
43 	pm_power_off = mips_machine_power_off;
44 
45 	return 0;
46 }
47 arch_initcall(mips_reboot_setup);
48