--- old/linux-xlnx-xilinx-v2015.1/drivers/remoteproc/zynq_remoteproc.c
+++ linux-xlnx-xilinx-v2015.1/drivers/remoteproc/zynq_remoteproc.c
@@ -62,6 +62,25 @@ struct zynq_rproc_pdata {
 static struct platform_device *remoteprocdev;
 static struct work_struct workqueue;
 
+ssize_t up_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct rproc *rproc = container_of(dev, struct rproc, dev);
+	if(buf[0] == '0') { // want to shut down
+		rproc_shutdown(rproc);
+	} else { // bring up
+		rproc_boot(rproc);
+	}
+	return count;
+}
+
+static ssize_t up_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct rproc *rproc = container_of(dev, struct rproc, dev);
+	return sprintf(buf, "%d\n", rproc->state);
+}
+
+static DEVICE_ATTR_RW(up);
+
 static void handle_event(struct work_struct *work)
 {
 	struct zynq_rproc_pdata *local = platform_get_drvdata(remoteprocdev);
@@ -308,6 +327,8 @@ static int zynq_remoteproc_probe(struct
 			goto rproc_fault;
 		}
 
+		ret = device_create_file(&local->rproc->dev, &dev_attr_up);
+
 		return ret;
 	} else
 		ret = -ENODEV;