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-rw-r--r--arch/arm/mach-ux500/hotplug.c36
1 files changed, 8 insertions, 28 deletions
diff --git a/arch/arm/mach-ux500/hotplug.c b/arch/arm/mach-ux500/hotplug.c
index c76f0f456f04..2f6af259015d 100644
--- a/arch/arm/mach-ux500/hotplug.c
+++ b/arch/arm/mach-ux500/hotplug.c
@@ -15,13 +15,18 @@
15#include <asm/cacheflush.h> 15#include <asm/cacheflush.h>
16#include <asm/smp_plat.h> 16#include <asm/smp_plat.h>
17 17
18extern volatile int pen_release; 18#include <mach/setup.h>
19 19
20static inline void platform_do_lowpower(unsigned int cpu) 20/*
21 * platform-specific code to shutdown a CPU
22 *
23 * Called with IRQs disabled
24 */
25void __ref ux500_cpu_die(unsigned int cpu)
21{ 26{
22 flush_cache_all(); 27 flush_cache_all();
23 28
24 /* we put the platform to just WFI */ 29 /* directly enter low power state, skipping secure registers */
25 for (;;) { 30 for (;;) {
26 __asm__ __volatile__("dsb\n\t" "wfi\n\t" 31 __asm__ __volatile__("dsb\n\t" "wfi\n\t"
27 : : : "memory"); 32 : : : "memory");
@@ -33,28 +38,3 @@ static inline void platform_do_lowpower(unsigned int cpu)
33 } 38 }
34 } 39 }
35} 40}
36
37int platform_cpu_kill(unsigned int cpu)
38{
39 return 1;
40}
41
42/*
43 * platform-specific code to shutdown a CPU
44 *
45 * Called with IRQs disabled
46 */
47void platform_cpu_die(unsigned int cpu)
48{
49 /* directly enter low power state, skipping secure registers */
50 platform_do_lowpower(cpu);
51}
52
53int platform_cpu_disable(unsigned int cpu)
54{
55 /*
56 * we don't allow CPU 0 to be shutdown (it is still too special
57 * e.g. clock tick interrupts)
58 */
59 return cpu == 0 ? -EPERM : 0;
60}