Merge branch 'next/soc' of git://git.linaro.org/people/arnd/arm-soc

* 'next/soc' of git://git.linaro.org/people/arnd/arm-soc: (21 commits)
  MAINTAINERS: add ARM/FREESCALE IMX6 entry
  arm/imx: merge i.MX3 and i.MX6
  arm/imx6q: add suspend/resume support
  arm/imx6q: add device tree machine support
  arm/imx6q: add smp and cpu hotplug support
  arm/imx6q: add core drivers clock, gpc, mmdc and src
  arm/imx: add gic_handle_irq function
  arm/imx6q: add core definitions and low-level debug uart
  arm/imx6q: add device tree source
  ARM: highbank: add suspend support
  ARM: highbank: Add cpu hotplug support
  ARM: highbank: add SMP support
  MAINTAINERS: add Calxeda Highbank ARM platform
  ARM: add Highbank core platform support
  ARM: highbank: add devicetree source
  ARM: l2x0: add empty l2x0_of_init
  picoxcell: add a definition of VMALLOC_END
  picoxcell: remove custom ioremap implementation
  picoxcell: add the DTS for the PC7302 board
  picoxcell: add the DTS for pc3x2 and pc3x3 devices
  ...

Fix up trivial conflicts in arch/arm/Kconfig, and some more header file
conflicts in arch/arm/mach-omap2/board-generic.c (as per an ealier merge
by Arnd).

22 files changed, 654 insertions, 0 deletions

diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile
new file mode 100644
index 000000000000..986958a5a720
--- /dev/null
+++ b/arch/arm/mach-highbank/Makefile
@@ -0,0 +1,6 @@
+obj-y					:= clock.o highbank.o system.o
+obj-$(CONFIG_DEBUG_HIGHBANK_UART)	+= lluart.o
+obj-$(CONFIG_SMP)			+= platsmp.o
+obj-$(CONFIG_LOCAL_TIMERS)		+= localtimer.o
+obj-$(CONFIG_HOTPLUG_CPU)		+= hotplug.o
+obj-$(CONFIG_PM_SLEEP)			+= pm.o
diff --git a/arch/arm/mach-highbank/Makefile.boot b/arch/arm/mach-highbank/Makefile.boot
new file mode 100644
index 000000000000..dae9661a7689
--- /dev/null
+++ b/arch/arm/mach-highbank/Makefile.boot
@@ -0,0 +1 @@
+zreladdr-y	:= 0x00008000
diff --git a/arch/arm/mach-highbank/clock.c b/arch/arm/mach-highbank/clock.c
new file mode 100644
index 000000000000..c25a2ae4fde1
--- /dev/null
+++ b/arch/arm/mach-highbank/clock.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2011 Calxeda, Inc.
+ *
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+
+struct clk {
+	unsigned long rate;
+};
+
+int clk_enable(struct clk *clk)
+{
+	return 0;
+}
+
+void clk_disable(struct clk *clk)
+{}
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+	return clk->rate;
+}
+
+long clk_round_rate(struct clk *clk, unsigned long rate)
+{
+	return clk->rate;
+}
+
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+	return 0;
+}
+
+static struct clk eclk = { .rate = 200000000 };
+static struct clk pclk = { .rate = 150000000 };
+
+static struct clk_lookup lookups[] = {
+	{ .clk = &pclk, .con_id = "apb_pclk", },
+	{ .clk = &pclk, .dev_id = "sp804", },
+	{ .clk = &eclk, .dev_id = "ffe0e000.sdhci", },
+	{ .clk = &pclk, .dev_id = "fff36000.serial", },
+};
+
+void __init highbank_clocks_init(void)
+{
+	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
+}
diff --git a/arch/arm/mach-highbank/core.h b/arch/arm/mach-highbank/core.h
new file mode 100644
index 000000000000..7e33fc94cd1e
--- /dev/null
+++ b/arch/arm/mach-highbank/core.h
@@ -0,0 +1,9 @@
+extern void highbank_set_cpu_jump(int cpu, void *jump_addr);
+extern void highbank_clocks_init(void);
+extern void __iomem *scu_base_addr;
+#ifdef CONFIG_DEBUG_HIGHBANK_UART
+extern void highbank_lluart_map_io(void);
+#else
+static inline void highbank_lluart_map_io(void) {}
+#endif
+
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
new file mode 100644
index 000000000000..b82dcf08e747
--- /dev/null
+++ b/arch/arm/mach-highbank/highbank.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright 2010-2011 Calxeda, Inc.
+ *
+ * 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/clk.h>
+#include <linux/clkdev.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/of_address.h>
+
+#include <asm/cacheflush.h>
+#include <asm/unified.h>
+#include <asm/smp_scu.h>
+#include <asm/hardware/arm_timer.h>
+#include <asm/hardware/timer-sp.h>
+#include <asm/hardware/gic.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/time.h>
+#include <mach/irqs.h>
+
+#include "core.h"
+#include "sysregs.h"
+
+void __iomem *sregs_base;
+
+#define HB_SCU_VIRT_BASE	0xfee00000
+void __iomem *scu_base_addr = ((void __iomem *)(HB_SCU_VIRT_BASE));
+
+static struct map_desc scu_io_desc __initdata = {
+	.virtual	= HB_SCU_VIRT_BASE,
+	.pfn		= 0, /* run-time */
+	.length		= SZ_4K,
+	.type		= MT_DEVICE,
+};
+
+static void __init highbank_scu_map_io(void)
+{
+	unsigned long base;
+
+	/* Get SCU base */
+	asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (base));
+
+	scu_io_desc.pfn = __phys_to_pfn(base);
+	iotable_init(&scu_io_desc, 1);
+}
+
+static void __init highbank_map_io(void)
+{
+	highbank_scu_map_io();
+	highbank_lluart_map_io();
+}
+
+#define HB_JUMP_TABLE_PHYS(cpu)		(0x40 + (0x10 * (cpu)))
+#define HB_JUMP_TABLE_VIRT(cpu)		phys_to_virt(HB_JUMP_TABLE_PHYS(cpu))
+
+void highbank_set_cpu_jump(int cpu, void *jump_addr)
+{
+	writel(BSYM(virt_to_phys(jump_addr)), HB_JUMP_TABLE_VIRT(cpu));
+	__cpuc_flush_dcache_area(HB_JUMP_TABLE_VIRT(cpu), 16);
+	outer_clean_range(HB_JUMP_TABLE_PHYS(cpu),
+			  HB_JUMP_TABLE_PHYS(cpu) + 15);
+}
+
+const static struct of_device_id irq_match[] = {
+	{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
+	{}
+};
+
+static void __init highbank_init_irq(void)
+{
+	of_irq_init(irq_match);
+	l2x0_of_init(0, ~0UL);
+}
+
+static void __init highbank_timer_init(void)
+{
+	int irq;
+	struct device_node *np;
+	void __iomem *timer_base;
+
+	/* Map system registers */
+	np = of_find_compatible_node(NULL, NULL, "calxeda,hb-sregs");
+	sregs_base = of_iomap(np, 0);
+	WARN_ON(!sregs_base);
+
+	np = of_find_compatible_node(NULL, NULL, "arm,sp804");
+	timer_base = of_iomap(np, 0);
+	WARN_ON(!timer_base);
+	irq = irq_of_parse_and_map(np, 0);
+
+	highbank_clocks_init();
+
+	sp804_clocksource_init(timer_base + 0x20, "timer1");
+	sp804_clockevents_init(timer_base, irq, "timer0");
+}
+
+static struct sys_timer highbank_timer = {
+	.init = highbank_timer_init,
+};
+
+static void highbank_power_off(void)
+{
+	hignbank_set_pwr_shutdown();
+	scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
+
+	while (1)
+		cpu_do_idle();
+}
+
+static void __init highbank_init(void)
+{
+	pm_power_off = highbank_power_off;
+
+	of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+}
+
+static const char *highbank_match[] __initconst = {
+	"calxeda,highbank",
+	NULL,
+};
+
+DT_MACHINE_START(HIGHBANK, "Highbank")
+	.map_io		= highbank_map_io,
+	.init_irq	= highbank_init_irq,
+	.timer		= &highbank_timer,
+	.init_machine	= highbank_init,
+	.dt_compat	= highbank_match,
+MACHINE_END
diff --git a/arch/arm/mach-highbank/hotplug.c b/arch/arm/mach-highbank/hotplug.c
new file mode 100644
index 000000000000..977cebbea580
--- /dev/null
+++ b/arch/arm/mach-highbank/hotplug.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2011 Calxeda, Inc.
+ *
+ * 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/kernel.h>
+#include <linux/errno.h>
+#include <linux/smp.h>
+
+#include <asm/smp_scu.h>
+#include <asm/cacheflush.h>
+
+#include "core.h"
+
+extern void secondary_startup(void);
+
+int platform_cpu_kill(unsigned int cpu)
+{
+	return 1;
+}
+
+/*
+ * platform-specific code to shutdown a CPU
+ *
+ */
+void platform_cpu_die(unsigned int cpu)
+{
+	flush_cache_all();
+
+	highbank_set_cpu_jump(cpu, secondary_startup);
+	scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
+
+	cpu_do_idle();
+
+	/* We should never return from idle */
+	panic("highbank: cpu %d unexpectedly exit from shutdown\n", cpu);
+}
+
+int platform_cpu_disable(unsigned int cpu)
+{
+	/*
+	 * CPU0 should not be shut down via hotplug.  cpu_idle can WFI
+	 * or a proper shutdown or hibernate should be used.
+	 */
+	return cpu == 0 ? -EPERM : 0;
+}
diff --git a/arch/arm/mach-highbank/include/mach/debug-macro.S b/arch/arm/mach-highbank/include/mach/debug-macro.S
new file mode 100644
index 000000000000..cb57fe5bcd04
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/debug-macro.S
@@ -0,0 +1,19 @@
+/*
+ * Debugging macro include header
+ *
+ *  Copyright (C) 1994-1999 Russell King
+ *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * 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.
+ */
+
+		.macro	addruart,rp,rv,tmp
+		movw	\rv, #0x6000
+		movt	\rv, #0xfee3
+		movw	\rp, #0x6000
+		movt	\rp, #0xfff3
+		.endm
+
+#include <asm/hardware/debug-pl01x.S>
diff --git a/arch/arm/mach-highbank/include/mach/entry-macro.S b/arch/arm/mach-highbank/include/mach/entry-macro.S
new file mode 100644
index 000000000000..73c11297509e
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/entry-macro.S
@@ -0,0 +1,7 @@
+#include <asm/hardware/entry-macro-gic.S>
+
+	.macro	disable_fiq
+	.endm
+
+	.macro	arch_ret_to_user, tmp1, tmp2
+	.endm
diff --git a/arch/arm/mach-highbank/include/mach/gpio.h b/arch/arm/mach-highbank/include/mach/gpio.h
new file mode 100644
index 000000000000..40a8c178f10d
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/gpio.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/arch/arm/mach-highbank/include/mach/io.h b/arch/arm/mach-highbank/include/mach/io.h
new file mode 100644
index 000000000000..70cfa3ba7697
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/io.h
@@ -0,0 +1,7 @@
+#ifndef __MACH_IO_H
+#define __MACH_IO_H
+
+#define __io(a)		({ (void)(a); __typesafe_io(0); })
+#define __mem_pci(a)	(a)
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/irqs.h b/arch/arm/mach-highbank/include/mach/irqs.h
new file mode 100644
index 000000000000..9746aab14e9a
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/irqs.h
@@ -0,0 +1,6 @@
+#ifndef __MACH_IRQS_H
+#define __MACH_IRQS_H
+
+#define NR_IRQS			192
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/memory.h b/arch/arm/mach-highbank/include/mach/memory.h
new file mode 100644
index 000000000000..40a8c178f10d
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/memory.h
@@ -0,0 +1 @@
+/* empty */
diff --git a/arch/arm/mach-highbank/include/mach/system.h b/arch/arm/mach-highbank/include/mach/system.h
new file mode 100644
index 000000000000..7e8192296cae
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/system.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2010-2011 Calxeda, Inc.
+ *
+ * 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/>.
+ */
+#ifndef __MACH_SYSTEM_H
+#define __MACH_SYSTEM_H
+
+static inline void arch_idle(void)
+{
+	cpu_do_idle();
+}
+
+extern void arch_reset(char mode, const char *cmd);
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/timex.h b/arch/arm/mach-highbank/include/mach/timex.h
new file mode 100644
index 000000000000..88dac7a55a97
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/timex.h
@@ -0,0 +1,6 @@
+#ifndef __MACH_TIMEX_H
+#define __MACH_TIMEX_H
+
+#define CLOCK_TICK_RATE		1000000
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/uncompress.h b/arch/arm/mach-highbank/include/mach/uncompress.h
new file mode 100644
index 000000000000..bbe20e696325
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/uncompress.h
@@ -0,0 +1,9 @@
+#ifndef __MACH_UNCOMPRESS_H
+#define __MACH_UNCOMPRESS_H
+
+#define putc(c)
+#define flush()
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
+
+#endif
diff --git a/arch/arm/mach-highbank/include/mach/vmalloc.h b/arch/arm/mach-highbank/include/mach/vmalloc.h
new file mode 100644
index 000000000000..1969e954277a
--- /dev/null
+++ b/arch/arm/mach-highbank/include/mach/vmalloc.h
@@ -0,0 +1 @@
+#define VMALLOC_END		0xFEE00000UL
diff --git a/arch/arm/mach-highbank/lluart.c b/arch/arm/mach-highbank/lluart.c
new file mode 100644
index 000000000000..371575019f33
--- /dev/null
+++ b/arch/arm/mach-highbank/lluart.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2011 Calxeda, Inc.
+ *
+ * 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 <asm/page.h>
+#include <asm/sizes.h>
+#include <asm/mach/map.h>
+
+#define HB_DEBUG_LL_PHYS_BASE	0xfff36000
+#define HB_DEBUG_LL_VIRT_BASE	0xfee36000
+
+static struct map_desc lluart_io_desc __initdata = {
+	.virtual	= HB_DEBUG_LL_VIRT_BASE,
+	.pfn		= __phys_to_pfn(HB_DEBUG_LL_PHYS_BASE),
+	.length		= SZ_4K,
+	.type		= MT_DEVICE,
+};
+
+void __init highbank_lluart_map_io(void)
+{
+	iotable_init(&lluart_io_desc, 1);
+}
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);
+}
diff --git a/arch/arm/mach-highbank/pm.c b/arch/arm/mach-highbank/pm.c
new file mode 100644
index 000000000000..33b3beb89982
--- /dev/null
+++ b/arch/arm/mach-highbank/pm.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2011 Calxeda, Inc.
+ *
+ * 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/io.h>
+#include <linux/suspend.h>
+
+#include <asm/proc-fns.h>
+#include <asm/smp_scu.h>
+#include <asm/suspend.h>
+
+#include "core.h"
+#include "sysregs.h"
+
+static int highbank_suspend_finish(unsigned long val)
+{
+	cpu_do_idle();
+	return 0;
+}
+
+static int highbank_pm_enter(suspend_state_t state)
+{
+	hignbank_set_pwr_suspend();
+	highbank_set_cpu_jump(0, cpu_resume);
+
+	scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
+	cpu_suspend(0, highbank_suspend_finish);
+
+	return 0;
+}
+
+static const struct platform_suspend_ops highbank_pm_ops = {
+	.enter = highbank_pm_enter,
+	.valid = suspend_valid_only_mem,
+};
+
+static int __init highbank_pm_init(void)
+{
+	suspend_set_ops(&highbank_pm_ops);
+	return 0;
+}
+module_init(highbank_pm_init);
diff --git a/arch/arm/mach-highbank/sysregs.h b/arch/arm/mach-highbank/sysregs.h
new file mode 100644
index 000000000000..0e913389f445
--- /dev/null
+++ b/arch/arm/mach-highbank/sysregs.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2011 Calxeda, Inc.
+ *
+ * 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/>.
+ */
+#ifndef _MACH_HIGHBANK__SYSREGS_H_
+#define _MACH_HIGHBANK__SYSREGS_H_
+
+#include <linux/io.h>
+
+extern void __iomem *sregs_base;
+
+#define HB_SREG_A9_PWR_REQ		0xf00
+#define HB_SREG_A9_BOOT_STAT		0xf04
+#define HB_SREG_A9_BOOT_DATA		0xf08
+
+#define HB_PWR_SUSPEND			0
+#define HB_PWR_SOFT_RESET		1
+#define HB_PWR_HARD_RESET		2
+#define HB_PWR_SHUTDOWN			3
+
+static inline void hignbank_set_pwr_suspend(void)
+{
+	writel(HB_PWR_SUSPEND, sregs_base + HB_SREG_A9_PWR_REQ);
+}
+
+static inline void hignbank_set_pwr_shutdown(void)
+{
+	writel(HB_PWR_SHUTDOWN, sregs_base + HB_SREG_A9_PWR_REQ);
+}
+
+static inline void hignbank_set_pwr_soft_reset(void)
+{
+	writel(HB_PWR_SOFT_RESET, sregs_base + HB_SREG_A9_PWR_REQ);
+}
+
+static inline void hignbank_set_pwr_hard_reset(void)
+{
+	writel(HB_PWR_HARD_RESET, sregs_base + HB_SREG_A9_PWR_REQ);
+}
+
+#endif
diff --git a/arch/arm/mach-highbank/system.c b/arch/arm/mach-highbank/system.c
new file mode 100644
index 000000000000..53f0c4c5ef1c
--- /dev/null
+++ b/arch/arm/mach-highbank/system.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2011 Calxeda, Inc.
+ *
+ * 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/io.h>
+#include <asm/smp_scu.h>
+#include <asm/proc-fns.h>
+
+#include "core.h"
+#include "sysregs.h"
+
+void arch_reset(char mode, const char *cmd)
+{
+	if (mode == 'h')
+		hignbank_set_pwr_hard_reset();
+	else
+		hignbank_set_pwr_soft_reset();
+
+	scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
+	cpu_do_idle();
+}
+