1 files changed, 90 insertions, 0 deletions

diff --git a/arch/arm/mach-hisi/hisilicon.c b/arch/arm/mach-hisi/hisilicon.c
new file mode 100644
index 000000000000..741faf3e7100
--- /dev/null
+++ b/arch/arm/mach-hisi/hisilicon.c
@@ -0,0 +1,90 @@
+/*
+ * (Hisilicon's SoC based) flattened device tree enabled machine
+ *
+ * Copyright (c) 2012-2013 Hisilicon Ltd.
+ * Copyright (c) 2012-2013 Linaro Ltd.
+ *
+ * Author: Haojian Zhuang <haojian.zhuang@linaro.org>
+ *
+ * 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/clk-provider.h>
+#include <linux/clocksource.h>
+#include <linux/irqchip.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+
+#include <asm/proc-fns.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include "core.h"
+
+#define HI3620_SYSCTRL_PHYS_BASE                0xfc802000
+#define HI3620_SYSCTRL_VIRT_BASE                0xfe802000
+
+/*
+ * This table is only for optimization. Since ioremap() could always share
+ * the same mapping if it's defined as static IO mapping.
+ *
+ * Without this table, system could also work. The cost is some virtual address
+ * spaces wasted since ioremap() may be called multi times for the same
+ * IO space.
+ */
+static struct map_desc hi3620_io_desc[] __initdata = {
+        {
+                /* sysctrl */
+                .pfn            = __phys_to_pfn(HI3620_SYSCTRL_PHYS_BASE),
+                .virtual        = HI3620_SYSCTRL_VIRT_BASE,
+                .length         = 0x1000,
+                .type           = MT_DEVICE,
+        },
+};
+
+static void __init hi3620_map_io(void)
+{
+        debug_ll_io_init();
+        iotable_init(hi3620_io_desc, ARRAY_SIZE(hi3620_io_desc));
+}
+
+static void hi3xxx_restart(enum reboot_mode mode, const char *cmd)
+{
+        struct device_node *np;
+        void __iomem *base;
+        int offset;
+
+        np = of_find_compatible_node(NULL, NULL, "hisilicon,sysctrl");
+        if (!np) {
+                pr_err("failed to find hisilicon,sysctrl node\n");
+                return;
+        }
+        base = of_iomap(np, 0);
+        if (!base) {
+                pr_err("failed to map address in hisilicon,sysctrl node\n");
+                return;
+        }
+        if (of_property_read_u32(np, "reboot-offset", &offset) < 0) {
+                pr_err("failed to find reboot-offset property\n");
+                return;
+        }
+        writel_relaxed(0xdeadbeef, base + offset);
+
+        while (1)
+                cpu_do_idle();
+}
+
+static const char *hi3xxx_compat[] __initconst = {
+        "hisilicon,hi3620-hi4511",
+        NULL,
+};
+
+DT_MACHINE_START(HI3620, "Hisilicon Hi3620 (Flattened Device Tree)")
+        .map_io         = hi3620_map_io,
+        .dt_compat      = hi3xxx_compat,
+        .smp            = smp_ops(hi3xxx_smp_ops),
+        .restart        = hi3xxx_restart,
+MACHINE_END