Add bootindex parameter to net/block/fd device

If bootindex is specified on command line a string that describes device
in firmware readable way is added into sorted list. Later this list will
be passed into firmware to control boot order.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/hw/qdev.c b/hw/qdev.c
index b65b63e10e..10e28df7a1 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -889,3 +889,35 @@ int do_device_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
     }
     return qdev_unplug(dev);
 }
+
+static int qdev_get_fw_dev_path_helper(DeviceState *dev, char *p, int size)
+{
+    int l = 0;
+
+    if (dev && dev->parent_bus) {
+        char *d;
+        l = qdev_get_fw_dev_path_helper(dev->parent_bus->parent, p, size);
+        if (dev->parent_bus->info->get_fw_dev_path) {
+            d = dev->parent_bus->info->get_fw_dev_path(dev);
+            l += snprintf(p + l, size - l, "%s", d);
+            qemu_free(d);
+        } else {
+            l += snprintf(p + l, size - l, "%s", dev->info->name);
+        }
+    }
+    l += snprintf(p + l , size - l, "/");
+
+    return l;
+}
+
+char* qdev_get_fw_dev_path(DeviceState *dev)
+{
+    char path[128];
+    int l;
+
+    l = qdev_get_fw_dev_path_helper(dev, path, 128);
+
+    path[l-1] = '\0';
+
+    return strdup(path);
+}