4 files changed, 121 insertions, 1 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 887b818bd667..b02e85bb4736 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1416,7 +1416,7 @@ config SMP
         depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
                  MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
                  ARCH_EXYNOS4 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4 || \
-                 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE
+                 ARCH_MSM_SCORPIONMP || ARCH_SHMOBILE || ARCH_HIGHBANK
         select USE_GENERIC_SMP_HELPERS
         select HAVE_ARM_SCU if !ARCH_MSM_SCORPIONMP
         help
diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile
index da7f81a69530..89c736ff047f 100644
--- a/arch/arm/mach-highbank/Makefile
+++ b/arch/arm/mach-highbank/Makefile
@@ -1,2 +1,4 @@
 obj-y                                   := clock.o highbank.o system.o
 obj-$(CONFIG_DEBUG_HIGHBANK_UART)       += lluart.o
+obj-$(CONFIG_SMP)                       += platsmp.o
+obj-$(CONFIG_LOCAL_TIMERS)              += localtimer.o
diff --git a/arch/arm/mach-highbank/localtimer.c b/arch/arm/mach-highbank/localtimer.c
new file mode 100644
index 000000000000..5a00e7945fdf
--- /dev/null
+++ b/arch/arm/mach-highbank/localtimer.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2010-2011 Calxeda, Inc.
+ * Based on localtimer.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/clockchips.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+
+#include <asm/smp_twd.h>
+
+/*
+ * Setup the local clock events for a CPU.
+ */
+int __cpuinit local_timer_setup(struct clock_event_device *evt)
+{
+        struct device_node *np;
+
+        np = of_find_compatible_node(NULL, NULL, "arm,smp-twd");
+        if (!twd_base) {
+                twd_base = of_iomap(np, 0);
+                WARN_ON(!twd_base);
+        }
+        evt->irq = irq_of_parse_and_map(np, 0);
+        twd_timer_setup(evt);
+        return 0;
+}
diff --git a/arch/arm/mach-highbank/platsmp.c b/arch/arm/mach-highbank/platsmp.c
new file mode 100644
index 000000000000..d01364c72b45
--- /dev/null
+++ b/arch/arm/mach-highbank/platsmp.c
@@ -0,0 +1,78 @@
+/*
+ * 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 <asm/hardware/gic.h>
+
+#include "core.h"
+
+extern void secondary_startup(void);
+
+void __cpuinit platform_secondary_init(unsigned int cpu)
+{
+        gic_secondary_init(0);
+}
+
+int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+{
+        gic_raise_softirq(cpumask_of(cpu), 0);
+        return 0;
+}
+
+/*
+ * Initialise the CPU possible map early - this describes the CPUs
+ * which may be present or become present in the system.
+ */
+void __init smp_init_cpus(void)
+{
+        unsigned int i, ncores;
+
+        ncores = scu_get_core_count(scu_base_addr);
+
+        /* 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);
+
+        set_smp_cross_call(gic_raise_softirq);
+}
+
+void __init platform_smp_prepare_cpus(unsigned int max_cpus)
+{
+        int i;
+
+        scu_enable(scu_base_addr);
+
+        /*
+         * Write the address of secondary startup into the jump table
+         * The cores are in wfi and wait until they receive a soft interrupt
+         * and a non-zero value to jump to. Then the secondary CPU branches
+         * to this address.
+         */
+        for (i = 1; i < max_cpus; i++)
+                highbank_set_cpu_jump(i, secondary_startup);
+}