first commit for chrg

2025-08-16 22:58:22 +08:00
commit 52a3ed5862
2306 changed files with 1021208 additions and 0 deletions
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "dtb_node.h"
+
+static void *dtb_root = NULL;
+static struct dtb_node *dtb_node_list = NULL;
+void *get_fdt_blob(void)
+{
+    return dtb_root;
+}
+
+struct dtb_node *get_dtb_node_head(void)
+{
+    return dtb_node_list;
+}
+
+rt_bool_t dtb_node_active(void)
+{
+    return dtb_node_list != NULL;
+}
+
+int device_tree_setup(void *mem_addr)
+{
+    if(mem_addr)
+    {
+        if ((dtb_root = dtb_node_load_from_memory(mem_addr,1)) != NULL)
+        {
+            dtb_node_list = dtb_node_get_dtb_list(dtb_root);
+            if (dtb_node_list != NULL)
+            {
+                return -1;
+            }
+        }
+        return 0;
+    }
+
+    return -1;
+}