diff options
Diffstat (limited to 'arch/arm/mach-zynq/hotplug.c')
| -rw-r--r-- | arch/arm/mach-zynq/hotplug.c | 47 |
1 files changed, 1 insertions, 46 deletions
diff --git a/arch/arm/mach-zynq/hotplug.c b/arch/arm/mach-zynq/hotplug.c index 5052c70326e4..b685c89f11e4 100644 --- a/arch/arm/mach-zynq/hotplug.c +++ b/arch/arm/mach-zynq/hotplug.c @@ -10,50 +10,5 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/smp.h> +#include <asm/proc-fns.h> -#include <asm/cacheflush.h> -#include <asm/cp15.h> -#include "common.h" - -static inline void zynq_cpu_enter_lowpower(void) -{ - unsigned int v; - - flush_cache_all(); - asm volatile( - " mcr p15, 0, %1, c7, c5, 0\n" - " dsb\n" - /* - * Turn off coherency - */ - " mrc p15, 0, %0, c1, c0, 1\n" - " bic %0, %0, #0x40\n" - " mcr p15, 0, %0, c1, c0, 1\n" - " mrc p15, 0, %0, c1, c0, 0\n" - " bic %0, %0, %2\n" - " mcr p15, 0, %0, c1, c0, 0\n" - : "=&r" (v) - : "r" (0), "Ir" (CR_C) - : "cc"); -} - -/* - * platform-specific code to shutdown a CPU - * - * Called with IRQs disabled - */ -void zynq_platform_cpu_die(unsigned int cpu) -{ - zynq_cpu_enter_lowpower(); - - /* - * there is no power-control hardware on this platform, so all - * we can do is put the core into WFI; this is safe as the calling - * code will have already disabled interrupts - */ - for (;;) - cpu_do_idle(); -} |