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-rw-r--r--arch/arm/mach-exynos/platsmp.c29
1 files changed, 17 insertions, 12 deletions
diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index 36c3984aaa47..f93d820ecab5 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -32,19 +32,14 @@
32 32
33#include <plat/cpu.h> 33#include <plat/cpu.h>
34 34
35#include "common.h"
36
35extern void exynos4_secondary_startup(void); 37extern void exynos4_secondary_startup(void);
36 38
37#define CPU1_BOOT_REG (samsung_rev() == EXYNOS4210_REV_1_1 ? \ 39#define CPU1_BOOT_REG (samsung_rev() == EXYNOS4210_REV_1_1 ? \
38 S5P_INFORM5 : S5P_VA_SYSRAM) 40 S5P_INFORM5 : S5P_VA_SYSRAM)
39 41
40/* 42/*
41 * control for which core is the next to come out of the secondary
42 * boot "holding pen"
43 */
44
45volatile int __cpuinitdata pen_release = -1;
46
47/*
48 * Write pen_release in a way that is guaranteed to be visible to all 43 * Write pen_release in a way that is guaranteed to be visible to all
49 * observers, irrespective of whether they're taking part in coherency 44 * observers, irrespective of whether they're taking part in coherency
50 * or not. This is necessary for the hotplug code to work reliably. 45 * or not. This is necessary for the hotplug code to work reliably.
@@ -64,7 +59,7 @@ static void __iomem *scu_base_addr(void)
64 59
65static DEFINE_SPINLOCK(boot_lock); 60static DEFINE_SPINLOCK(boot_lock);
66 61
67void __cpuinit platform_secondary_init(unsigned int cpu) 62static void __cpuinit exynos_secondary_init(unsigned int cpu)
68{ 63{
69 /* 64 /*
70 * if any interrupts are already enabled for the primary 65 * if any interrupts are already enabled for the primary
@@ -86,7 +81,7 @@ void __cpuinit platform_secondary_init(unsigned int cpu)
86 spin_unlock(&boot_lock); 81 spin_unlock(&boot_lock);
87} 82}
88 83
89int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) 84static int __cpuinit exynos_boot_secondary(unsigned int cpu, struct task_struct *idle)
90{ 85{
91 unsigned long timeout; 86 unsigned long timeout;
92 87
@@ -139,7 +134,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
139 134
140 __raw_writel(virt_to_phys(exynos4_secondary_startup), 135 __raw_writel(virt_to_phys(exynos4_secondary_startup),
141 CPU1_BOOT_REG); 136 CPU1_BOOT_REG);
142 gic_raise_softirq(cpumask_of(cpu), 1); 137 gic_raise_softirq(cpumask_of(cpu), 0);
143 138
144 if (pen_release == -1) 139 if (pen_release == -1)
145 break; 140 break;
@@ -161,7 +156,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
161 * which may be present or become present in the system. 156 * which may be present or become present in the system.
162 */ 157 */
163 158
164void __init smp_init_cpus(void) 159static void __init exynos_smp_init_cpus(void)
165{ 160{
166 void __iomem *scu_base = scu_base_addr(); 161 void __iomem *scu_base = scu_base_addr();
167 unsigned int i, ncores; 162 unsigned int i, ncores;
@@ -184,7 +179,7 @@ void __init smp_init_cpus(void)
184 set_smp_cross_call(gic_raise_softirq); 179 set_smp_cross_call(gic_raise_softirq);
185} 180}
186 181
187void __init platform_smp_prepare_cpus(unsigned int max_cpus) 182static void __init exynos_smp_prepare_cpus(unsigned int max_cpus)
188{ 183{
189 if (!soc_is_exynos5250()) 184 if (!soc_is_exynos5250())
190 scu_enable(scu_base_addr()); 185 scu_enable(scu_base_addr());
@@ -198,3 +193,13 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
198 __raw_writel(virt_to_phys(exynos4_secondary_startup), 193 __raw_writel(virt_to_phys(exynos4_secondary_startup),
199 CPU1_BOOT_REG); 194 CPU1_BOOT_REG);
200} 195}
196
197struct smp_operations exynos_smp_ops __initdata = {
198 .smp_init_cpus = exynos_smp_init_cpus,
199 .smp_prepare_cpus = exynos_smp_prepare_cpus,
200 .smp_secondary_init = exynos_secondary_init,
201 .smp_boot_secondary = exynos_boot_secondary,
202#ifdef CONFIG_HOTPLUG_CPU
203 .cpu_die = exynos_cpu_die,
204#endif
205};