1 files changed, 8 insertions, 34 deletions

diff --git a/arch/arm/mach-shmobile/smp-emev2.c b/arch/arm/mach-shmobile/smp-emev2.c
index bc8e071d55c6..8225c16b371b 100644
--- a/arch/arm/mach-shmobile/smp-emev2.c
+++ b/arch/arm/mach-shmobile/smp-emev2.c
@@ -28,27 +28,9 @@
 #include <mach/emev2.h>
 #include <asm/smp_plat.h>
 #include <asm/smp_scu.h>
-#include <asm/cacheflush.h>
 
 #define EMEV2_SCU_BASE 0x1e000000
 
-static DEFINE_SPINLOCK(scu_lock);
-
-static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
-{
-	unsigned long tmp;
-
-	/* we assume this code is running on a different cpu
-	 * than the one that is changing coherency setting */
-	spin_lock(&scu_lock);
-	tmp = readl(shmobile_scu_base + 8);
-	tmp &= ~clr;
-	tmp |= set;
-	writel(tmp, shmobile_scu_base + 8);
-	spin_unlock(&scu_lock);
-
-}
-
 static void __cpuinit emev2_secondary_init(unsigned int cpu)
 {
 	gic_secondary_init(0);
@@ -56,36 +38,28 @@ static void __cpuinit emev2_secondary_init(unsigned int cpu)
 
 static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct *idle)
 {
-	cpu = cpu_logical_map(cpu);
-
-	/* enable cache coherency */
-	modify_scu_cpu_psr(0, 3 << (cpu * 8));
-
-	arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+	arch_send_wakeup_ipi_mask(cpumask_of(cpu_logical_map(cpu)));
 	return 0;
 }
 
 static void __init emev2_smp_prepare_cpus(unsigned int max_cpus)
 {
-	int cpu = cpu_logical_map(0);
-
 	scu_enable(shmobile_scu_base);
 
-	/* Tell ROM loader about our vector (in headsmp.S) */
-	emev2_set_boot_vector(__pa(shmobile_secondary_vector));
+	/* Tell ROM loader about our vector (in headsmp-scu.S) */
+	emev2_set_boot_vector(__pa(shmobile_secondary_vector_scu));
 
-	/* enable cache coherency on CPU0 */
-	modify_scu_cpu_psr(0, 3 << (cpu * 8));
+	/* enable cache coherency on booting CPU */
+	scu_power_mode(shmobile_scu_base, SCU_PM_NORMAL);
 }
 
 static void __init emev2_smp_init_cpus(void)
 {
 	unsigned int ncores;
 
-	if (!shmobile_scu_base) {
-		shmobile_scu_base = ioremap(EMEV2_SCU_BASE, PAGE_SIZE);
-		emev2_clock_init(); /* need ioremapped SMU */
-	}
+	/* setup EMEV2 specific SCU base */
+	shmobile_scu_base = ioremap(EMEV2_SCU_BASE, PAGE_SIZE);
+	emev2_clock_init(); /* need ioremapped SMU */
 
 	ncores = shmobile_scu_base ? scu_get_core_count(shmobile_scu_base) : 1;