Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / core / root.c

diff --git a/qemu/roms/u-boot/drivers/core/root.c b/qemu/roms/u-boot/drivers/core/root.c
new file mode 100644 (file)
index 0000000..407bc0d
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/core/root.c
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2013 Google, Inc
+ *
+ * (C) Copyright 2012
+ * Pavel Herrmann <morpheus.ibis@gmail.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <malloc.h>
+#include <dm/device.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <dm/platdata.h>
+#include <dm/uclass.h>
+#include <dm/util.h>
+#include <linux/list.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct driver_info root_info = {
+       .name           = "root_driver",
+};
+
+struct device *dm_root(void)
+{
+       if (!gd->dm_root) {
+               dm_warn("Virtual root driver does not exist!\n");
+               return NULL;
+       }
+
+       return gd->dm_root;
+}
+
+int dm_init(void)
+{
+       int ret;
+
+       if (gd->dm_root) {
+               dm_warn("Virtual root driver already exists!\n");
+               return -EINVAL;
+       }
+       INIT_LIST_HEAD(&gd->uclass_root);
+
+       ret = device_bind_by_name(NULL, &root_info, &gd->dm_root);
+       if (ret)
+               return ret;
+
+       return 0;
+}
+
+int dm_scan_platdata(void)
+{
+       int ret;
+
+       ret = lists_bind_drivers(gd->dm_root);
+       if (ret == -ENOENT) {
+               dm_warn("Some drivers were not found\n");
+               ret = 0;
+       }
+       if (ret)
+               return ret;
+
+       return 0;
+}
+
+#ifdef CONFIG_OF_CONTROL
+int dm_scan_fdt(const void *blob)
+{
+       int offset = 0;
+       int ret = 0, err;
+       int depth = 0;
+
+       do {
+               offset = fdt_next_node(blob, offset, &depth);
+               if (offset > 0 && depth == 1) {
+                       err = lists_bind_fdt(gd->dm_root, blob, offset);
+                       if (err && !ret)
+                               ret = err;
+               }
+       } while (offset > 0);
+
+       if (ret)
+               dm_warn("Some drivers failed to bind\n");
+
+       return ret;
+}
+#endif
+
+/* This is the root driver - all drivers are children of this */
+U_BOOT_DRIVER(root_driver) = {
+       .name   = "root_driver",
+       .id     = UCLASS_ROOT,
+};
+
+/* This is the root uclass */
+UCLASS_DRIVER(root) = {
+       .name   = "root",
+       .id     = UCLASS_ROOT,
+};