MIPS: Provide fallback reboot/poweroff/halt implementations
If a machine-specific hook is not implemented for restart, poweroff, or halt, fall back to halting secondary CPUs, disabling interrupts, and spinning. In the case of restart, attempt to restart the system via do_kernel_restart() (which will call any registered restart handlers) before halting. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Cc: James Hogan <james.hogan@imgtec.com> Cc: Maciej W. Rozycki <macro@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/9600/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -11,6 +11,7 @@
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#include <linux/pm.h>
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#include <linux/pm.h>
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#include <linux/types.h>
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#include <linux/types.h>
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#include <linux/reboot.h>
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#include <linux/reboot.h>
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#include <linux/delay.h>
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#include <asm/reboot.h>
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#include <asm/reboot.h>
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@ -29,16 +30,40 @@ void machine_restart(char *command)
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{
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{
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if (_machine_restart)
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if (_machine_restart)
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_machine_restart(command);
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_machine_restart(command);
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#ifdef CONFIG_SMP
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preempt_disable();
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smp_send_stop();
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#endif
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do_kernel_restart(command);
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mdelay(1000);
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pr_emerg("Reboot failed -- System halted\n");
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local_irq_disable();
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while (1);
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}
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}
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void machine_halt(void)
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void machine_halt(void)
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{
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{
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if (_machine_halt)
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if (_machine_halt)
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_machine_halt();
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_machine_halt();
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#ifdef CONFIG_SMP
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preempt_disable();
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smp_send_stop();
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#endif
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local_irq_disable();
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while (1);
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}
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}
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void machine_power_off(void)
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void machine_power_off(void)
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{
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{
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if (pm_power_off)
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if (pm_power_off)
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pm_power_off();
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pm_power_off();
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#ifdef CONFIG_SMP
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preempt_disable();
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smp_send_stop();
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#endif
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local_irq_disable();
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while (1);
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}
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}
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