1 files changed, 97 insertions, 0 deletions
diff --git a/hw/rtc/sun4v-rtc.c b/hw/rtc/sun4v-rtc.c
new file mode 100644
index 000000000..e037acd1b
--- /dev/null
+++ b/hw/rtc/sun4v-rtc.c
@@ -0,0 +1,97 @@
+/*
+ * QEMU sun4v Real Time Clock device
+ *
+ * The sun4v_rtc device (sun4v tod clock)
+ *
+ * Copyright (c) 2016 Artyom Tarasenko
+ *
+ * This code is licensed under the GNU GPL v3 or (at your option) any later
+ * version.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/sysbus.h"
+#include "qapi/error.h"
+#include "qemu/module.h"
+#include "qemu/timer.h"
+#include "hw/rtc/sun4v-rtc.h"
+#include "trace.h"
+#include "qom/object.h"
+
+
+#define TYPE_SUN4V_RTC "sun4v_rtc"
+OBJECT_DECLARE_SIMPLE_TYPE(Sun4vRtc, SUN4V_RTC)
+
+struct Sun4vRtc {
+    SysBusDevice parent_obj;
+
+    MemoryRegion iomem;
+};
+
+static uint64_t sun4v_rtc_read(void *opaque, hwaddr addr,
+                                unsigned size)
+{
+    uint64_t val = get_clock_realtime() / NANOSECONDS_PER_SECOND;
+    if (!(addr & 4ULL)) {
+        /* accessing the high 32 bits */
+        val >>= 32;
+    }
+    trace_sun4v_rtc_read(addr, val);
+    return val;
+}
+
+static void sun4v_rtc_write(void *opaque, hwaddr addr,
+                             uint64_t val, unsigned size)
+{
+    trace_sun4v_rtc_write(addr, val);
+}
+
+static const MemoryRegionOps sun4v_rtc_ops = {
+    .read = sun4v_rtc_read,
+    .write = sun4v_rtc_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+void sun4v_rtc_init(hwaddr addr)
+{
+    DeviceState *dev;
+    SysBusDevice *s;
+
+    dev = qdev_new(TYPE_SUN4V_RTC);
+    s = SYS_BUS_DEVICE(dev);
+
+    sysbus_realize_and_unref(s, &error_fatal);
+
+    sysbus_mmio_map(s, 0, addr);
+}
+
+static void sun4v_rtc_realize(DeviceState *dev, Error **errp)
+{
+    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+    Sun4vRtc *s = SUN4V_RTC(dev);
+
+    memory_region_init_io(&s->iomem, OBJECT(s), &sun4v_rtc_ops, s,
+                          "sun4v-rtc", 0x08ULL);
+    sysbus_init_mmio(sbd, &s->iomem);
+}
+
+static void sun4v_rtc_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->realize = sun4v_rtc_realize;
+}
+
+static const TypeInfo sun4v_rtc_info = {
+    .name          = TYPE_SUN4V_RTC,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(Sun4vRtc),
+    .class_init    = sun4v_rtc_class_init,
+};
+
+static void sun4v_rtc_register_types(void)
+{
+    type_register_static(&sun4v_rtc_info);
+}
+
+type_init(sun4v_rtc_register_types)