From f45e388ff0f90b922b77bef959a2cfb0645cffbe Mon Sep 17 00:00:00 2001 From: Andrew Bresticker Date: Wed, 25 Mar 2015 10:25:44 -0700 Subject: [PATCH] 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 Cc: James Hogan Cc: Maciej W. Rozycki 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 --- arch/mips/kernel/reset.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/mips/kernel/reset.c b/arch/mips/kernel/reset.c index 07fc5244aed4..7c746d3458e7 100644 --- a/arch/mips/kernel/reset.c +++ b/arch/mips/kernel/reset.c @@ -11,6 +11,7 @@ #include #include #include +#include #include @@ -29,16 +30,40 @@ void machine_restart(char *command) { if (_machine_restart) _machine_restart(command); + +#ifdef CONFIG_SMP + preempt_disable(); + smp_send_stop(); +#endif + do_kernel_restart(command); + mdelay(1000); + pr_emerg("Reboot failed -- System halted\n"); + local_irq_disable(); + while (1); } void machine_halt(void) { if (_machine_halt) _machine_halt(); + +#ifdef CONFIG_SMP + preempt_disable(); + smp_send_stop(); +#endif + local_irq_disable(); + while (1); } void machine_power_off(void) { if (pm_power_off) pm_power_off(); + +#ifdef CONFIG_SMP + preempt_disable(); + smp_send_stop(); +#endif + local_irq_disable(); + while (1); } -- 2.30.2