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Diffstat (limited to 'arch/arm/mach-ux500/hotplug.c')
-rw-r--r--arch/arm/mach-ux500/hotplug.c58
1 files changed, 10 insertions, 48 deletions
diff --git a/arch/arm/mach-ux500/hotplug.c b/arch/arm/mach-ux500/hotplug.c
index b782a03024b..2bc00b085e3 100644
--- a/arch/arm/mach-ux500/hotplug.c
+++ b/arch/arm/mach-ux500/hotplug.c
@@ -11,23 +11,23 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/smp.h>
-#include <linux/completion.h>
-#include <asm/cacheflush.h>
+#include <asm/smp_plat.h>
-extern volatile int pen_release;
+#include "setup.h"
-static DECLARE_COMPLETION(cpu_killed);
-
-static inline void platform_do_lowpower(unsigned int cpu)
+/*
+ * platform-specific code to shutdown a CPU
+ *
+ * Called with IRQs disabled
+ */
+void __ref ux500_cpu_die(unsigned int cpu)
{
- flush_cache_all();
-
- /* we put the platform to just WFI */
+ /* directly enter low power state, skipping secure registers */
for (;;) {
__asm__ __volatile__("dsb\n\t" "wfi\n\t"
: : : "memory");
- if (pen_release == cpu) {
+ if (pen_release == cpu_logical_map(cpu)) {
/*
* OK, proper wakeup, we're done
*/
@@ -35,41 +35,3 @@ static inline void platform_do_lowpower(unsigned int cpu)
}
}
}
-
-int platform_cpu_kill(unsigned int cpu)
-{
- return wait_for_completion_timeout(&cpu_killed, 5000);
-}
-
-/*
- * platform-specific code to shutdown a CPU
- *
- * Called with IRQs disabled
- */
-void platform_cpu_die(unsigned int cpu)
-{
-#ifdef DEBUG
- unsigned int this_cpu = hard_smp_processor_id();
-
- if (cpu != this_cpu) {
- printk(KERN_CRIT "Eek! platform_cpu_die running on %u, should be %u\n",
- this_cpu, cpu);
- BUG();
- }
-#endif
-
- printk(KERN_NOTICE "CPU%u: shutdown\n", cpu);
- complete(&cpu_killed);
-
- /* directly enter low power state, skipping secure registers */
- platform_do_lowpower(cpu);
-}
-
-int platform_cpu_disable(unsigned int cpu)
-{
- /*
- * we don't allow CPU 0 to be shutdown (it is still too special
- * e.g. clock tick interrupts)
- */
- return cpu == 0 ? -EPERM : 0;
-}