1 files changed, 70 insertions, 0 deletions
diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c
new file mode 100644
index 000000000..e2cb4a5d2
--- /dev/null
+++ b/hw/misc/pvpanic.c
@@ -0,0 +1,70 @@
+/*
+ * QEMU simulated pvpanic device.
+ *
+ * Copyright Fujitsu, Corp. 2013
+ *
+ * Authors:
+ *     Wen Congyang <wency@cn.fujitsu.com>
+ *     Hu Tao <hutao@cn.fujitsu.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "sysemu/runstate.h"
+
+#include "hw/nvram/fw_cfg.h"
+#include "hw/qdev-properties.h"
+#include "hw/misc/pvpanic.h"
+#include "qom/object.h"
+
+static void handle_event(int event)
+{
+    static bool logged;
+
+    if (event & ~(PVPANIC_PANICKED | PVPANIC_CRASHLOADED) && !logged) {
+        qemu_log_mask(LOG_GUEST_ERROR, "pvpanic: unknown event %#x.\n", event);
+        logged = true;
+    }
+
+    if (event & PVPANIC_PANICKED) {
+        qemu_system_guest_panicked(NULL);
+        return;
+    }
+
+    if (event & PVPANIC_CRASHLOADED) {
+        qemu_system_guest_crashloaded(NULL);
+        return;
+    }
+}
+
+/* return supported events on read */
+static uint64_t pvpanic_read(void *opaque, hwaddr addr, unsigned size)
+{
+    PVPanicState *pvp = opaque;
+    return pvp->events;
+}
+
+static void pvpanic_write(void *opaque, hwaddr addr, uint64_t val,
+                                 unsigned size)
+{
+    handle_event(val);
+}
+
+static const MemoryRegionOps pvpanic_ops = {
+    .read = pvpanic_read,
+    .write = pvpanic_write,
+    .impl = {
+        .min_access_size = 1,
+        .max_access_size = 1,
+    },
+};
+
+void pvpanic_setup_io(PVPanicState *s, DeviceState *dev, unsigned size)
+{
+    memory_region_init_io(&s->mr, OBJECT(dev), &pvpanic_ops, s, "pvpanic", size);
+}