Eric Lee / smarc-fsl-linux-kernel

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arch/sh/kernel/reboot.c 1.74 KB
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fbb82b036   Paul Mundt   sh: machine_ops b... 
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  #include <linux/pm.h>
  #include <linux/kexec.h>
  #include <linux/kernel.h>
  #include <linux/reboot.h>
  #include <linux/module.h>
  #ifdef CONFIG_SUPERH32
  #include <asm/watchdog.h>
  #endif
  #include <asm/addrspace.h>
  #include <asm/reboot.h>
  #include <asm/system.h>
59615ecdb   Paul Mundt   sh: Provide a glo... 
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  #include <asm/tlbflush.h>
fbb82b036   Paul Mundt   sh: machine_ops b... 
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  void (*pm_power_off)(void);
  EXPORT_SYMBOL(pm_power_off);
  
  #ifdef CONFIG_SUPERH32
  static void watchdog_trigger_immediate(void)
  {
  	sh_wdt_write_cnt(0xFF);
  	sh_wdt_write_csr(0xC2);
  }
  #endif
  
  static void native_machine_restart(char * __unused)
  {
  	local_irq_disable();
59615ecdb   Paul Mundt   sh: Provide a glo... 
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  	/* Destroy all of the TLBs in preparation for reset by MMU */
  	__flush_tlb_global();
fbb82b036   Paul Mundt   sh: machine_ops b... 
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  	/* Address error with SR.BL=1 first. */
  	trigger_address_error();
  
  #ifdef CONFIG_SUPERH32
  	/* If that fails or is unsupported, go for the watchdog next. */
  	watchdog_trigger_immediate();
  #endif
  
  	/*
  	 * Give up and sleep.
  	 */
  	while (1)
  		cpu_sleep();
  }
  
  static void native_machine_shutdown(void)
  {
  	smp_send_stop();
  }
  
  static void native_machine_power_off(void)
  {
  	if (pm_power_off)
  		pm_power_off();
  }
  
  static void native_machine_halt(void)
  {
  	/* stop other cpus */
  	machine_shutdown();
  
  	/* stop this cpu */
  	stop_this_cpu(NULL);
  }
  
  struct machine_ops machine_ops = {
  	.power_off	= native_machine_power_off,
  	.shutdown	= native_machine_shutdown,
  	.restart	= native_machine_restart,
  	.halt		= native_machine_halt,
  #ifdef CONFIG_KEXEC
  	.crash_shutdown = native_machine_crash_shutdown,
  #endif
  };
  
  void machine_power_off(void)
  {
  	machine_ops.power_off();
  }
  
  void machine_shutdown(void)
  {
  	machine_ops.shutdown();
  }
  
  void machine_restart(char *cmd)
  {
  	machine_ops.restart(cmd);
  }
  
  void machine_halt(void)
  {
  	machine_ops.halt();
  }
  
  #ifdef CONFIG_KEXEC
  void machine_crash_shutdown(struct pt_regs *regs)
  {
  	machine_ops.crash_shutdown(regs);
  }
  #endif