Add qemu 2.4.0

[kvmfornfv.git] / qemu / dtc / tests / subnode_iterate.c

diff --git a/qemu/dtc/tests/subnode_iterate.c b/qemu/dtc/tests/subnode_iterate.c
new file mode 100644 (file)
index 0000000..b9f379d
--- /dev/null
+++ b/qemu/dtc/tests/subnode_iterate.c
@@ -0,0 +1,94 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *     Tests that fdt_next_subnode() works as expected
+ *
+ * Copyright (C) 2013 Google, Inc
+ *
+ * Copyright (C) 2007 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+static void test_node(void *fdt, int parent_offset)
+{
+       fdt32_t subnodes;
+       const fdt32_t *prop;
+       int offset;
+       int count;
+       int len;
+
+       /* This property indicates the number of subnodes to expect */
+       prop = fdt_getprop(fdt, parent_offset, "subnodes", &len);
+       if (!prop || len != sizeof(fdt32_t)) {
+               FAIL("Missing/invalid subnodes property at '%s'",
+                    fdt_get_name(fdt, parent_offset, NULL));
+       }
+       subnodes = cpu_to_fdt32(*prop);
+
+       count = 0;
+       for (offset = fdt_first_subnode(fdt, parent_offset);
+            offset >= 0;
+            offset = fdt_next_subnode(fdt, offset))
+               count++;
+
+       if (count != subnodes) {
+               FAIL("Node '%s': Expected %d subnodes, got %d\n",
+                    fdt_get_name(fdt, parent_offset, NULL), subnodes,
+                    count);
+       }
+}
+
+static void check_fdt_next_subnode(void *fdt)
+{
+       int offset;
+       int count = 0;
+
+       for (offset = fdt_first_subnode(fdt, 0);
+            offset >= 0;
+            offset = fdt_next_subnode(fdt, offset)) {
+               test_node(fdt, offset);
+               count++;
+       }
+
+       if (count != 2)
+               FAIL("Expected %d tests, got %d\n", 2, count);
+}
+
+int main(int argc, char *argv[])
+{
+       void *fdt;
+
+       test_init(argc, argv);
+       if (argc != 2)
+               CONFIG("Usage: %s <dtb file>", argv[0]);
+
+       fdt = load_blob(argv[1]);
+       if (!fdt)
+               FAIL("No device tree available");
+
+       check_fdt_next_subnode(fdt);
+
+       PASS();
+}