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authorAndrew Bresticker <abrestic@chromium.org>2015-03-25 10:25:44 -0700
committerRalf Baechle <ralf@linux-mips.org>2015-04-01 17:21:58 +0200
commitf45e388ff0f90b922b77bef959a2cfb0645cffbe (patch)
treedd239465dde0fc90608fd3af313ac80ed3a1ca10 /arch/mips/kernel/reset.c
parentea925a72a271f6868dddef98426b396f110da211 (diff)
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>
Diffstat (limited to 'arch/mips/kernel/reset.c')
-rw-r--r--arch/mips/kernel/reset.c25
1 files changed, 25 insertions, 0 deletions
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 <linux/pm.h>
#include <linux/types.h>
#include <linux/reboot.h>
+#include <linux/delay.h>
#include <asm/reboot.h>
@@ -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);
}