diff options
Diffstat (limited to 'arch/arm/mach-shmobile/hotplug.c')
-rw-r--r-- | arch/arm/mach-shmobile/hotplug.c | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/arch/arm/mach-shmobile/hotplug.c b/arch/arm/mach-shmobile/hotplug.c deleted file mode 100644 index a1524e3367b..00000000000 --- a/arch/arm/mach-shmobile/hotplug.c +++ /dev/null @@ -1,68 +0,0 @@ -/* - * SMP support for R-Mobile / SH-Mobile - * - * Copyright (C) 2010 Magnus Damm - * - * Based on realview, Copyright (C) 2002 ARM Ltd, All Rights Reserved - * - * This program is free software; you can redistribute it and/or modify - * 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 <linux/cpumask.h> -#include <linux/delay.h> -#include <linux/of.h> -#include <mach/common.h> -#include <mach/r8a7779.h> -#include <mach/emev2.h> -#include <asm/cacheflush.h> -#include <asm/mach-types.h> - -static cpumask_t dead_cpus; - -void shmobile_cpu_die(unsigned int cpu) -{ - /* hardware shutdown code running on the CPU that is being offlined */ - flush_cache_all(); - dsb(); - - /* notify platform_cpu_kill() that hardware shutdown is finished */ - cpumask_set_cpu(cpu, &dead_cpus); - - /* wait for SoC code in platform_cpu_kill() to shut off CPU core - * power. CPU bring up starts from the reset vector. - */ - while (1) { - /* - * here's the WFI - */ - asm(".word 0xe320f003\n" - : - : - : "memory", "cc"); - } -} - -int shmobile_cpu_disable(unsigned int cpu) -{ - cpumask_clear_cpu(cpu, &dead_cpus); - /* - * we don't allow CPU 0 to be shutdown (it is still too special - * e.g. clock tick interrupts) - */ - return cpu == 0 ? -EPERM : 0; -} - -int shmobile_cpu_disable_any(unsigned int cpu) -{ - cpumask_clear_cpu(cpu, &dead_cpus); - return 0; -} - -int shmobile_cpu_is_dead(unsigned int cpu) -{ - return cpumask_test_cpu(cpu, &dead_cpus); -} |