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 13void (*pm_power_off)(void); 14EXPORT_SYMBOL(pm_power_off); 15 16#ifdef CONFIG_SUPERH32 17static void watchdog_trigger_immediate(void) 18{ 19 sh_wdt_write_cnt(0xFF); 20 sh_wdt_write_csr(0xC2); 21} 22#endif 23 24static 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 43static void native_machine_shutdown(void) 44{ 45 smp_send_stop(); 46} 47 48static void native_machine_power_off(void) 49{ 50 if (pm_power_off) 51 pm_power_off(); 52} 53 54static 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 63struct 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 73void machine_power_off(void) 74{ 75 machine_ops.power_off(); 76} 77 78void machine_shutdown(void) 79{ 80 machine_ops.shutdown(); 81} 82 83void machine_restart(char *cmd) 84{ 85 machine_ops.restart(cmd); 86} 87 88void machine_halt(void) 89{ 90 machine_ops.halt(); 91} 92 93#ifdef CONFIG_KEXEC 94void machine_crash_shutdown(struct pt_regs *regs) 95{ 96 machine_ops.crash_shutdown(regs); 97} 98#endif 99