1 files changed, 96 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c
new file mode 100644
index 00000000..45fa3924
--- /dev/null
+++ b/arch/arm/mach-shmobile/platsmp.c
@@ -0,0 +1,96 @@
+/*
+ * SMP support for R-Mobile / SH-Mobile
+ *
+ * Copyright (C) 2010  Magnus Damm
+ * Copyright (C) 2011  Paul Mundt
+ *
+ * Based on vexpress, 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/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/smp.h>
+#include <linux/io.h>
+#include <asm/hardware/gic.h>
+#include <asm/mach-types.h>
+#include <mach/common.h>
+
+#define is_sh73a0() (machine_is_ag5evm() || machine_is_kota2())
+#define is_r8a7779() machine_is_marzen()
+
+static unsigned int __init shmobile_smp_get_core_count(void)
+{
+	if (is_sh73a0())
+		return sh73a0_get_core_count();
+
+	if (is_r8a7779())
+		return r8a7779_get_core_count();
+
+	return 1;
+}
+
+static void __init shmobile_smp_prepare_cpus(void)
+{
+	if (is_sh73a0())
+		sh73a0_smp_prepare_cpus();
+
+	if (is_r8a7779())
+		r8a7779_smp_prepare_cpus();
+}
+
+int shmobile_platform_cpu_kill(unsigned int cpu)
+{
+	if (is_r8a7779())
+		return r8a7779_platform_cpu_kill(cpu);
+
+	return 1;
+}
+
+void __cpuinit platform_secondary_init(unsigned int cpu)
+{
+	trace_hardirqs_off();
+
+	if (is_sh73a0())
+		sh73a0_secondary_init(cpu);
+
+	if (is_r8a7779())
+		r8a7779_secondary_init(cpu);
+}
+
+int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+	if (is_sh73a0())
+		return sh73a0_boot_secondary(cpu);
+
+	if (is_r8a7779())
+		return r8a7779_boot_secondary(cpu);
+
+	return -ENOSYS;
+}
+
+void __init smp_init_cpus(void)
+{
+	unsigned int ncores = shmobile_smp_get_core_count();
+	unsigned int i;
+
+	if (ncores > nr_cpu_ids) {
+		pr_warn("SMP: %u cores greater than maximum (%u), clipping\n",
+			ncores, nr_cpu_ids);
+		ncores = nr_cpu_ids;
+	}
+
+	for (i = 0; i < ncores; i++)
+		set_cpu_possible(i, true);
+
+	set_smp_cross_call(gic_raise_softirq);
+}
+
+void __init platform_smp_prepare_cpus(unsigned int max_cpus)
+{
+	shmobile_smp_prepare_cpus();
+}