1#include <linux/pm.h>
2#include <linux/kexec.h>
3#include <linux/kernel.h>
4#include <linux/reboot.h>
5#include <linux/module.h>
6#ifdef CONFIG_SUPERH32
7#include <asm/watchdog.h>
8#endif
9#include <asm/addrspace.h>
10#include <asm/reboot.h>
11#include <asm/tlbflush.h>
12#include <asm/traps.h>
13
14void (*pm_power_off)(void);
15EXPORT_SYMBOL(pm_power_off);
16
17#ifdef CONFIG_SUPERH32
18static void watchdog_trigger_immediate(void)
19{
20	sh_wdt_write_cnt(0xFF);
21	sh_wdt_write_csr(0xC2);
22}
23#endif
24
25static void native_machine_restart(char * __unused)
26{
27	local_irq_disable();
28
29	/* Destroy all of the TLBs in preparation for reset by MMU */
30	__flush_tlb_global();
31
32	/* Address error with SR.BL=1 first. */
33	trigger_address_error();
34
35#ifdef CONFIG_SUPERH32
36	/* If that fails or is unsupported, go for the watchdog next. */
37	watchdog_trigger_immediate();
38#endif
39
40	/*
41	 * Give up and sleep.
42	 */
43	while (1)
44		cpu_sleep();
45}
46
47static void native_machine_shutdown(void)
48{
49	smp_send_stop();
50}
51
52static void native_machine_power_off(void)
53{
54	if (pm_power_off)
55		pm_power_off();
56}
57
58static void native_machine_halt(void)
59{
60	/* stop other cpus */
61	machine_shutdown();
62
63	/* stop this cpu */
64	stop_this_cpu(NULL);
65}
66
67struct machine_ops machine_ops = {
68	.power_off	= native_machine_power_off,
69	.shutdown	= native_machine_shutdown,
70	.restart	= native_machine_restart,
71	.halt		= native_machine_halt,
72#ifdef CONFIG_KEXEC
73	.crash_shutdown = native_machine_crash_shutdown,
74#endif
75};
76
77void machine_power_off(void)
78{
79	machine_ops.power_off();
80}
81
82void machine_shutdown(void)
83{
84	machine_ops.shutdown();
85}
86
87void machine_restart(char *cmd)
88{
89	machine_ops.restart(cmd);
90}
91
92void machine_halt(void)
93{
94	machine_ops.halt();
95}
96
97#ifdef CONFIG_KEXEC
98void machine_crash_shutdown(struct pt_regs *regs)
99{
100	machine_ops.crash_shutdown(regs);
101}
102#endif
103