1 files changed, 68 insertions, 0 deletions
diff --git a/arch/arm/mach-highbank/platsmp.c b/arch/arm/mach-highbank/platsmp.c
new file mode 100644
index 00000000..a984573e
--- /dev/null
+++ b/arch/arm/mach-highbank/platsmp.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2010-2011 Calxeda, Inc.
+ * Based on platsmp.c, Copyright (C) 2002 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/io.h>
+
+#include <asm/smp_scu.h>
+
+#include "core.h"
+
+extern void secondary_startup(void);
+
+static int __cpuinit highbank_boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+	highbank_set_cpu_jump(cpu, secondary_startup);
+	arch_send_wakeup_ipi_mask(cpumask_of(cpu));
+	return 0;
+}
+
+/*
+ * Initialise the CPU possible map early - this describes the CPUs
+ * which may be present or become present in the system.
+ */
+static void __init highbank_smp_init_cpus(void)
+{
+	unsigned int i, ncores = 4;
+
+	/* sanity check */
+	if (ncores > NR_CPUS) {
+		printk(KERN_WARNING
+		       "highbank: no. of cores (%d) greater than configured "
+		       "maximum of %d - clipping\n",
+		       ncores, NR_CPUS);
+		ncores = NR_CPUS;
+	}
+
+	for (i = 0; i < ncores; i++)
+		set_cpu_possible(i, true);
+}
+
+static void __init highbank_smp_prepare_cpus(unsigned int max_cpus)
+{
+	if (scu_base_addr)
+		scu_enable(scu_base_addr);
+}
+
+struct smp_operations highbank_smp_ops __initdata = {
+	.smp_init_cpus		= highbank_smp_init_cpus,
+	.smp_prepare_cpus	= highbank_smp_prepare_cpus,
+	.smp_boot_secondary	= highbank_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+	.cpu_die		= highbank_cpu_die,
+#endif
+};