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fbb82b03 PM |
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/system.h> | |
12 | ||
13 | void (*pm_power_off)(void); | |
14 | EXPORT_SYMBOL(pm_power_off); | |
15 | ||
16 | #ifdef CONFIG_SUPERH32 | |
17 | static void watchdog_trigger_immediate(void) | |
18 | { | |
19 | sh_wdt_write_cnt(0xFF); | |
20 | sh_wdt_write_csr(0xC2); | |
21 | } | |
22 | #endif | |
23 | ||
24 | static void native_machine_restart(char * __unused) | |
25 | { | |
26 | local_irq_disable(); | |
27 | ||
28 | /* Address error with SR.BL=1 first. */ | |
29 | trigger_address_error(); | |
30 | ||
31 | #ifdef CONFIG_SUPERH32 | |
32 | /* If that fails or is unsupported, go for the watchdog next. */ | |
33 | watchdog_trigger_immediate(); | |
34 | #endif | |
35 | ||
36 | /* | |
37 | * Give up and sleep. | |
38 | */ | |
39 | while (1) | |
40 | cpu_sleep(); | |
41 | } | |
42 | ||
43 | static void native_machine_shutdown(void) | |
44 | { | |
45 | smp_send_stop(); | |
46 | } | |
47 | ||
48 | static void native_machine_power_off(void) | |
49 | { | |
50 | if (pm_power_off) | |
51 | pm_power_off(); | |
52 | } | |
53 | ||
54 | static void native_machine_halt(void) | |
55 | { | |
56 | /* stop other cpus */ | |
57 | machine_shutdown(); | |
58 | ||
59 | /* stop this cpu */ | |
60 | stop_this_cpu(NULL); | |
61 | } | |
62 | ||
63 | struct machine_ops machine_ops = { | |
64 | .power_off = native_machine_power_off, | |
65 | .shutdown = native_machine_shutdown, | |
66 | .restart = native_machine_restart, | |
67 | .halt = native_machine_halt, | |
68 | #ifdef CONFIG_KEXEC | |
69 | .crash_shutdown = native_machine_crash_shutdown, | |
70 | #endif | |
71 | }; | |
72 | ||
73 | void machine_power_off(void) | |
74 | { | |
75 | machine_ops.power_off(); | |
76 | } | |
77 | ||
78 | void machine_shutdown(void) | |
79 | { | |
80 | machine_ops.shutdown(); | |
81 | } | |
82 | ||
83 | void machine_restart(char *cmd) | |
84 | { | |
85 | machine_ops.restart(cmd); | |
86 | } | |
87 | ||
88 | void machine_halt(void) | |
89 | { | |
90 | machine_ops.halt(); | |
91 | } | |
92 | ||
93 | #ifdef CONFIG_KEXEC | |
94 | void machine_crash_shutdown(struct pt_regs *regs) | |
95 | { | |
96 | machine_ops.crash_shutdown(regs); | |
97 | } | |
98 | #endif |