projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 59615ecd | 11 | #include <asm/tlbflush.h> |
| e839ca52 | 12 | #include <asm/traps.h> |
| fbb82b03 PM |
13 | |
| 14 | void (*pm_power_off)(void); | |
| 15 | EXPORT_SYMBOL(pm_power_off); | |
| 16 | ||
| 17 | #ifdef CONFIG_SUPERH32 | |
| 18 | static void watchdog_trigger_immediate(void) | |
| 19 | { | |
| 20 | sh_wdt_write_cnt(0xFF); | |
| 21 | sh_wdt_write_csr(0xC2); | |
| 22 | } | |
| 23 | #endif | |
| 24 | ||
| 25 | static void native_machine_restart(char * __unused) | |
| 26 | { | |
| 27 | local_irq_disable(); | |
| 28 | ||
| 59615ecd PM |
29 | /* Destroy all of the TLBs in preparation for reset by MMU */ |
| 30 | __flush_tlb_global(); | |
| 31 | ||
| fbb82b03 PM |
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 | ||
| 47 | static void native_machine_shutdown(void) | |
| 48 | { | |
| 49 | smp_send_stop(); | |
| 50 | } | |
| 51 | ||
| 52 | static void native_machine_power_off(void) | |
| 53 | { | |
| 54 | if (pm_power_off) | |
| 55 | pm_power_off(); | |
| 56 | } | |
| 57 | ||
| 58 | static 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 | ||
| 67 | struct 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 | ||
| 77 | void machine_power_off(void) | |
| 78 | { | |
| 79 | machine_ops.power_off(); | |
| 80 | } | |
| 81 | ||
| 82 | void machine_shutdown(void) | |
| 83 | { | |
| 84 | machine_ops.shutdown(); | |
| 85 | } | |
| 86 | ||
| 87 | void machine_restart(char *cmd) | |
| 88 | { | |
| 89 | machine_ops.restart(cmd); | |
| 90 | } | |
| 91 | ||
| 92 | void machine_halt(void) | |
| 93 | { | |
| 94 | machine_ops.halt(); | |
| 95 | } | |
| 96 | ||
| 97 | #ifdef CONFIG_KEXEC | |
| 98 | void machine_crash_shutdown(struct pt_regs *regs) | |
| 99 | { | |
| 100 | machine_ops.crash_shutdown(regs); | |
| 101 | } | |
| 102 | #endif |