libfdt: Bring in proposed pylibfdt changes

This provides various patches sent to the devicetree-compiler mailing list
to enhance the Python bindings. A final version of this patch may be
created once upstreaming is complete, but if it takes too long, this can
act as a placeholder.

New pylibfdt features:
- Support for most remaining, relevant libfdt functions
- Support for sequential-write functions

Changes are applied to existing U-Boot tools as needed.
Signed-off-by: NSimon Glass <sjg@chromium.org>

scripts/dtc/libfdt/libfdt.h

@@ -1313,10 +1313,13 @@ static inline int fdt_property_u64(void *fdt, const char *name, uint64_t val)
 	fdt64_t tmp = cpu_to_fdt64(val);
 	return fdt_property(fdt, name, &tmp, sizeof(tmp));
 }
+
+#ifndef SWIG /* Not available in Python */
 static inline int fdt_property_cell(void *fdt, const char *name, uint32_t val)
 {
 	return fdt_property_u32(fdt, name, val);
 }
+#endif
 
 /**
  * fdt_property_placeholder - add a new property and return a ptr to its value

tools/dtoc/dtoc.py

@@ -36,14 +36,26 @@ sys.path.append(os.path.join(our_path, '../patman'))
 
 import dtb_platdata
 
-def run_tests():
-    """Run all the test we have for dtoc"""
+def run_tests(args):
+    """Run all the test we have for dtoc
+
+    Args:
+        args: List of positional args provided to binman. This can hold a test
+            name to execute (as in 'binman -t testSections', for example)
+    """
     import test_dtoc
 
     result = unittest.TestResult()
     sys.argv = [sys.argv[0]]
+    test_name = args and args[0] or None
     for module in (test_dtoc.TestDtoc,):
-        suite = unittest.TestLoader().loadTestsFromTestCase(module)
+        if test_name:
+            try:
+                suite = unittest.TestLoader().loadTestsFromName(test_name, module)
+            except AttributeError:
+                continue
+        else:
+            suite = unittest.TestLoader().loadTestsFromTestCase(module)
         suite.run(result)
 
     print result
@@ -68,7 +80,7 @@ parser.add_option('-t', '--test', action='store_true', dest='test',
 
 # Run our meagre tests
 if options.test:
-    run_tests()
+    run_tests(args)
 
 else:
     dtb_platdata.run_steps(args, options.dtb_file, options.include_disabled,

tools/dtoc/fdt.py

@@ -234,7 +234,6 @@ class Node:
         be updated.
         """
         if self._offset != my_offset:
-            #print '%s: %d -> %d\n' % (self.path, self._offset, my_offset)
             self._offset = my_offset
         offset = libfdt.fdt_first_subnode(self._fdt.GetFdt(), self._offset)
         for subnode in self.subnodes:
@@ -359,7 +358,7 @@ class Fdt:
         poffset = libfdt.fdt_first_property_offset(self._fdt, node._offset)
         while poffset >= 0:
             p = self._fdt_obj.get_property_by_offset(poffset)
-            prop = Prop(node, poffset, p.name, p.value)
+            prop = Prop(node, poffset, p.name, p)
             props_dict[prop.name] = prop
 
             poffset = libfdt.fdt_next_property_offset(self._fdt, poffset)

tools/dtoc/test_dtoc.py

@@ -4,7 +4,8 @@
 
 """Tests for the dtb_platdata module
 
-This includes unit tests for some functions and functional tests for
+This includes unit tests for some functions and functional tests for the dtoc
+tool.
 """
 
 import collections