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dtoc: Update Fdt.GetNode() to handle the root node

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This function currently fails if the root node is requested. Requesting
the root node is sometimes useful, so fix the bug.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2019-07-20 12:23:39 -06:00
parent 880e9ee650
commit e44bc831e2
2 changed files with 7 additions and 0 deletions
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2
tools/dtoc/fdt.py
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@ -574,6 +574,8 @@ class Fdt:
parts = path.split('/')
if len(parts) < 2:
return None
if len(parts) == 2 and parts[1] == '':
return node
for part in parts[1:]:
node = node.FindNode(part)
if not node:

5
tools/dtoc/test_fdt.py
View File

@ -77,11 +77,16 @@ class TestFdt(unittest.TestCase):
"""Test the GetNode() method"""
node = self.dtb.GetNode('/spl-test')
self.assertTrue(isinstance(node, fdt.Node))
node = self.dtb.GetNode('/i2c@0/pmic@9')
self.assertTrue(isinstance(node, fdt.Node))
self.assertEqual('pmic@9', node.name)
self.assertIsNone(self.dtb.GetNode('/i2c@0/pmic@9/missing'))
node = self.dtb.GetNode('/')
self.assertTrue(isinstance(node, fdt.Node))
self.assertEqual(0, node.Offset())
def testFlush(self):
"""Check that we can flush the device tree out to its file"""
fname = self.dtb._fname