summaryrefslogtreecommitdiff
path: root/arch/openrisc
diff options
context:
space:
mode:
Diffstat (limited to 'arch/openrisc')
-rw-r--r--arch/openrisc/kernel/process.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c
index 4cce95fa6eb5..1d4c0921aafa 100644
--- a/arch/openrisc/kernel/process.c
+++ b/arch/openrisc/kernel/process.c
@@ -63,6 +63,16 @@ void machine_restart(char *cmd)
}
/*
+ * This is used if pm_power_off has not been set by a power management
+ * driver, in this case we can assume we are on a simulator. On
+ * OpenRISC simulators l.nop 1 will trigger the simulator exit.
+ */
+static void default_power_off(void)
+{
+ __asm__("l.nop 1");
+}
+
+/*
* Similar to machine_power_off, but don't shut off power. Add code
* here to freeze the system for e.g. post-mortem debug purpose when
* possible. This halt has nothing to do with the idle halt.
@@ -77,7 +87,10 @@ void machine_halt(void)
void machine_power_off(void)
{
printk(KERN_INFO "*** MACHINE POWER OFF ***\n");
- __asm__("l.nop 1");
+ if (pm_power_off != NULL)
+ pm_power_off();
+ else
+ default_power_off();
}
/*
@@ -91,7 +104,7 @@ void arch_cpu_idle(void)
mtspr(SPR_PMR, mfspr(SPR_PMR) | SPR_PMR_DME);
}
-void (*pm_power_off) (void) = machine_power_off;
+void (*pm_power_off)(void) = NULL;
EXPORT_SYMBOL(pm_power_off);
/*