563 lines
20 KiB
Python
563 lines
20 KiB
Python
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#!/usr/bin/python
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# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2018 Google, Inc
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# Written by Simon Glass <sjg@chromium.org>
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#
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from optparse import OptionParser
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import glob
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import os
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import sys
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import unittest
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# Bring in the patman libraries
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our_path = os.path.dirname(os.path.realpath(__file__))
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for dirname in ['../patman', '..']:
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sys.path.insert(0, os.path.join(our_path, dirname))
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import command
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import fdt
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from fdt import TYPE_BYTE, TYPE_INT, TYPE_STRING, TYPE_BOOL
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import fdt_util
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from fdt_util import fdt32_to_cpu
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import libfdt
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import test_util
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import tools
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def _GetPropertyValue(dtb, node, prop_name):
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"""Low-level function to get the property value based on its offset
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This looks directly in the device tree at the property's offset to find
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its value. It is useful as a check that the property is in the correct
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place.
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Args:
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node: Node to look in
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prop_name: Property name to find
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Returns:
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Tuple:
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Prop object found
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Value of property as a string (found using property offset)
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"""
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prop = node.props[prop_name]
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# Add 12, which is sizeof(struct fdt_property), to get to start of data
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offset = prop.GetOffset() + 12
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data = dtb.GetContents()[offset:offset + len(prop.value)]
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return prop, [chr(x) for x in data]
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class TestFdt(unittest.TestCase):
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"""Tests for the Fdt module
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This includes unit tests for some functions and functional tests for the fdt
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module.
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"""
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@classmethod
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def setUpClass(cls):
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tools.PrepareOutputDir(None)
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@classmethod
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def tearDownClass(cls):
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tools.FinaliseOutputDir()
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def setUp(self):
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self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts')
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def testFdt(self):
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"""Test that we can open an Fdt"""
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self.dtb.Scan()
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root = self.dtb.GetRoot()
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self.assertTrue(isinstance(root, fdt.Node))
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def testGetNode(self):
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"""Test the GetNode() method"""
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node = self.dtb.GetNode('/spl-test')
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self.assertTrue(isinstance(node, fdt.Node))
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node = self.dtb.GetNode('/i2c@0/pmic@9')
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self.assertTrue(isinstance(node, fdt.Node))
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self.assertEqual('pmic@9', node.name)
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self.assertIsNone(self.dtb.GetNode('/i2c@0/pmic@9/missing'))
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def testFlush(self):
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"""Check that we can flush the device tree out to its file"""
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fname = self.dtb._fname
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with open(fname) as fd:
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data = fd.read()
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os.remove(fname)
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with self.assertRaises(IOError):
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open(fname)
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self.dtb.Flush()
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with open(fname) as fd:
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data = fd.read()
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def testPack(self):
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"""Test that packing a device tree works"""
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self.dtb.Pack()
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def testGetFdt(self):
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"""Tetst that we can access the raw device-tree data"""
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self.assertTrue(isinstance(self.dtb.GetContents(), bytearray))
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def testGetProps(self):
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"""Tests obtaining a list of properties"""
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node = self.dtb.GetNode('/spl-test')
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props = self.dtb.GetProps(node)
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self.assertEqual(['boolval', 'bytearray', 'byteval', 'compatible',
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'intarray', 'intval', 'longbytearray', 'notstring',
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'stringarray', 'stringval', 'u-boot,dm-pre-reloc'],
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sorted(props.keys()))
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def testCheckError(self):
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"""Tests the ChecKError() function"""
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with self.assertRaises(ValueError) as e:
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fdt.CheckErr(-libfdt.NOTFOUND, 'hello')
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self.assertIn('FDT_ERR_NOTFOUND: hello', str(e.exception))
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def testGetFdt(self):
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node = self.dtb.GetNode('/spl-test')
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self.assertEqual(self.dtb, node.GetFdt())
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class TestNode(unittest.TestCase):
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"""Test operation of the Node class"""
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@classmethod
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def setUpClass(cls):
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tools.PrepareOutputDir(None)
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@classmethod
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def tearDownClass(cls):
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tools.FinaliseOutputDir()
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def setUp(self):
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self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts')
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self.node = self.dtb.GetNode('/spl-test')
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def testOffset(self):
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"""Tests that we can obtain the offset of a node"""
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self.assertTrue(self.node.Offset() > 0)
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def testDelete(self):
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"""Tests that we can delete a property"""
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node2 = self.dtb.GetNode('/spl-test2')
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offset1 = node2.Offset()
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self.node.DeleteProp('intval')
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offset2 = node2.Offset()
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self.assertTrue(offset2 < offset1)
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self.node.DeleteProp('intarray')
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offset3 = node2.Offset()
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self.assertTrue(offset3 < offset2)
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with self.assertRaises(libfdt.FdtException):
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self.node.DeleteProp('missing')
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def testDeleteGetOffset(self):
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"""Test that property offset update when properties are deleted"""
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self.node.DeleteProp('intval')
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prop, value = _GetPropertyValue(self.dtb, self.node, 'longbytearray')
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self.assertEqual(prop.value, value)
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def testFindNode(self):
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"""Tests that we can find a node using the FindNode() functoin"""
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node = self.dtb.GetRoot().FindNode('i2c@0')
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self.assertEqual('i2c@0', node.name)
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subnode = node.FindNode('pmic@9')
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self.assertEqual('pmic@9', subnode.name)
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self.assertEqual(None, node.FindNode('missing'))
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def testRefreshMissingNode(self):
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"""Test refreshing offsets when an extra node is present in dtb"""
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# Delete it from our tables, not the device tree
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del self.dtb._root.subnodes[-1]
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with self.assertRaises(ValueError) as e:
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self.dtb.Refresh()
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self.assertIn('Internal error, offset', str(e.exception))
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def testRefreshExtraNode(self):
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"""Test refreshing offsets when an expected node is missing"""
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# Delete it from the device tre, not our tables
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self.dtb.GetFdtObj().del_node(self.node.Offset())
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with self.assertRaises(ValueError) as e:
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self.dtb.Refresh()
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self.assertIn('Internal error, node name mismatch '
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'spl-test != spl-test2', str(e.exception))
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def testRefreshMissingProp(self):
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"""Test refreshing offsets when an extra property is present in dtb"""
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# Delete it from our tables, not the device tree
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del self.node.props['notstring']
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with self.assertRaises(ValueError) as e:
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self.dtb.Refresh()
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self.assertIn("Internal error, property 'notstring' missing, offset ",
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str(e.exception))
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def testLookupPhandle(self):
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"""Test looking up a single phandle"""
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dtb = fdt.FdtScan('tools/dtoc/dtoc_test_phandle.dts')
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node = dtb.GetNode('/phandle-source2')
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prop = node.props['clocks']
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target = dtb.GetNode('/phandle-target')
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self.assertEqual(target, dtb.LookupPhandle(fdt32_to_cpu(prop.value)))
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class TestProp(unittest.TestCase):
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"""Test operation of the Prop class"""
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@classmethod
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def setUpClass(cls):
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tools.PrepareOutputDir(None)
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@classmethod
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def tearDownClass(cls):
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tools.FinaliseOutputDir()
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def setUp(self):
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self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts')
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self.node = self.dtb.GetNode('/spl-test')
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self.fdt = self.dtb.GetFdtObj()
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def testMissingNode(self):
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self.assertEqual(None, self.dtb.GetNode('missing'))
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def testPhandle(self):
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dtb = fdt.FdtScan('tools/dtoc/dtoc_test_phandle.dts')
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node = dtb.GetNode('/phandle-source2')
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prop = node.props['clocks']
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self.assertTrue(fdt32_to_cpu(prop.value) > 0)
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def _ConvertProp(self, prop_name):
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"""Helper function to look up a property in self.node and return it
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Args:
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Property name to find
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Return fdt.Prop object for this property
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"""
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p = self.fdt.getprop(self.node.Offset(), prop_name)
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return fdt.Prop(self.node, -1, prop_name, p)
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def testMakeProp(self):
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"""Test we can convert all the the types that are supported"""
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prop = self._ConvertProp('boolval')
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self.assertEqual(fdt.TYPE_BOOL, prop.type)
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self.assertEqual(True, prop.value)
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prop = self._ConvertProp('intval')
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self.assertEqual(fdt.TYPE_INT, prop.type)
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self.assertEqual(1, fdt32_to_cpu(prop.value))
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prop = self._ConvertProp('intarray')
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self.assertEqual(fdt.TYPE_INT, prop.type)
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val = [fdt32_to_cpu(val) for val in prop.value]
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self.assertEqual([2, 3, 4], val)
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prop = self._ConvertProp('byteval')
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self.assertEqual(fdt.TYPE_BYTE, prop.type)
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self.assertEqual(5, ord(prop.value))
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prop = self._ConvertProp('longbytearray')
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self.assertEqual(fdt.TYPE_BYTE, prop.type)
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val = [ord(val) for val in prop.value]
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self.assertEqual([9, 10, 11, 12, 13, 14, 15, 16, 17], val)
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prop = self._ConvertProp('stringval')
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self.assertEqual(fdt.TYPE_STRING, prop.type)
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self.assertEqual('message', prop.value)
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prop = self._ConvertProp('stringarray')
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self.assertEqual(fdt.TYPE_STRING, prop.type)
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self.assertEqual(['multi-word', 'message'], prop.value)
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prop = self._ConvertProp('notstring')
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self.assertEqual(fdt.TYPE_BYTE, prop.type)
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val = [ord(val) for val in prop.value]
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self.assertEqual([0x20, 0x21, 0x22, 0x10, 0], val)
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def testGetEmpty(self):
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"""Tests the GetEmpty() function for the various supported types"""
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self.assertEqual(True, fdt.Prop.GetEmpty(fdt.TYPE_BOOL))
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self.assertEqual(chr(0), fdt.Prop.GetEmpty(fdt.TYPE_BYTE))
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self.assertEqual(chr(0) * 4, fdt.Prop.GetEmpty(fdt.TYPE_INT))
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self.assertEqual('', fdt.Prop.GetEmpty(fdt.TYPE_STRING))
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def testGetOffset(self):
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"""Test we can get the offset of a property"""
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prop, value = _GetPropertyValue(self.dtb, self.node, 'longbytearray')
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self.assertEqual(prop.value, value)
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def testWiden(self):
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"""Test widening of values"""
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node2 = self.dtb.GetNode('/spl-test2')
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prop = self.node.props['intval']
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# No action
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prop2 = node2.props['intval']
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prop.Widen(prop2)
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self.assertEqual(fdt.TYPE_INT, prop.type)
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self.assertEqual(1, fdt32_to_cpu(prop.value))
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# Convert singla value to array
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prop2 = self.node.props['intarray']
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prop.Widen(prop2)
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self.assertEqual(fdt.TYPE_INT, prop.type)
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self.assertTrue(isinstance(prop.value, list))
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# A 4-byte array looks like a single integer. When widened by a longer
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# byte array, it should turn into an array.
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prop = self.node.props['longbytearray']
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prop2 = node2.props['longbytearray']
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self.assertFalse(isinstance(prop2.value, list))
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self.assertEqual(4, len(prop2.value))
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prop2.Widen(prop)
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self.assertTrue(isinstance(prop2.value, list))
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self.assertEqual(9, len(prop2.value))
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# Similarly for a string array
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prop = self.node.props['stringval']
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prop2 = node2.props['stringarray']
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self.assertFalse(isinstance(prop.value, list))
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self.assertEqual(7, len(prop.value))
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prop.Widen(prop2)
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self.assertTrue(isinstance(prop.value, list))
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self.assertEqual(3, len(prop.value))
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# Enlarging an existing array
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prop = self.node.props['stringarray']
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prop2 = node2.props['stringarray']
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self.assertTrue(isinstance(prop.value, list))
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self.assertEqual(2, len(prop.value))
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prop.Widen(prop2)
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self.assertTrue(isinstance(prop.value, list))
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self.assertEqual(3, len(prop.value))
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def testAdd(self):
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"""Test adding properties"""
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self.fdt.pack()
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# This function should automatically expand the device tree
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self.node.AddZeroProp('one')
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self.node.AddZeroProp('two')
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self.node.AddZeroProp('three')
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self.dtb.Sync(auto_resize=True)
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# Updating existing properties should be OK, since the device-tree size
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# does not change
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self.fdt.pack()
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self.node.SetInt('one', 1)
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self.node.SetInt('two', 2)
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self.node.SetInt('three', 3)
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self.dtb.Sync(auto_resize=False)
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# This should fail since it would need to increase the device-tree size
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self.node.AddZeroProp('four')
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with self.assertRaises(libfdt.FdtException) as e:
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self.dtb.Sync(auto_resize=False)
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self.assertIn('FDT_ERR_NOSPACE', str(e.exception))
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self.dtb.Sync(auto_resize=True)
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def testAddNode(self):
|
||
|
|
self.fdt.pack()
|
||
|
|
self.node.AddSubnode('subnode')
|
||
|
|
with self.assertRaises(libfdt.FdtException) as e:
|
||
|
|
self.dtb.Sync(auto_resize=False)
|
||
|
|
self.assertIn('FDT_ERR_NOSPACE', str(e.exception))
|
||
|
|
|
||
|
|
self.dtb.Sync(auto_resize=True)
|
||
|
|
offset = self.fdt.path_offset('/spl-test/subnode')
|
||
|
|
self.assertTrue(offset > 0)
|
||
|
|
|
||
|
|
def testAddMore(self):
|
||
|
|
"""Test various other methods for adding and setting properties"""
|
||
|
|
self.node.AddZeroProp('one')
|
||
|
|
self.dtb.Sync(auto_resize=True)
|
||
|
|
data = self.fdt.getprop(self.node.Offset(), 'one')
|
||
|
|
self.assertEqual(0, fdt32_to_cpu(data))
|
||
|
|
|
||
|
|
self.node.SetInt('one', 1)
|
||
|
|
self.dtb.Sync(auto_resize=False)
|
||
|
|
data = self.fdt.getprop(self.node.Offset(), 'one')
|
||
|
|
self.assertEqual(1, fdt32_to_cpu(data))
|
||
|
|
|
||
|
|
val = '123' + chr(0) + '456'
|
||
|
|
self.node.AddString('string', val)
|
||
|
|
self.dtb.Sync(auto_resize=True)
|
||
|
|
data = self.fdt.getprop(self.node.Offset(), 'string')
|
||
|
|
self.assertEqual(val + '\0', data)
|
||
|
|
|
||
|
|
self.fdt.pack()
|
||
|
|
self.node.SetString('string', val + 'x')
|
||
|
|
with self.assertRaises(libfdt.FdtException) as e:
|
||
|
|
self.dtb.Sync(auto_resize=False)
|
||
|
|
self.assertIn('FDT_ERR_NOSPACE', str(e.exception))
|
||
|
|
self.node.SetString('string', val[:-1])
|
||
|
|
|
||
|
|
prop = self.node.props['string']
|
||
|
|
prop.SetData(val)
|
||
|
|
self.dtb.Sync(auto_resize=False)
|
||
|
|
data = self.fdt.getprop(self.node.Offset(), 'string')
|
||
|
|
self.assertEqual(val, data)
|
||
|
|
|
||
|
|
self.node.AddEmptyProp('empty', 5)
|
||
|
|
self.dtb.Sync(auto_resize=True)
|
||
|
|
prop = self.node.props['empty']
|
||
|
|
prop.SetData(val)
|
||
|
|
self.dtb.Sync(auto_resize=False)
|
||
|
|
data = self.fdt.getprop(self.node.Offset(), 'empty')
|
||
|
|
self.assertEqual(val, data)
|
||
|
|
|
||
|
|
self.node.SetData('empty', '123')
|
||
|
|
self.assertEqual('123', prop.bytes)
|
||
|
|
|
||
|
|
def testFromData(self):
|
||
|
|
dtb2 = fdt.Fdt.FromData(self.dtb.GetContents())
|
||
|
|
self.assertEqual(dtb2.GetContents(), self.dtb.GetContents())
|
||
|
|
|
||
|
|
self.node.AddEmptyProp('empty', 5)
|
||
|
|
self.dtb.Sync(auto_resize=True)
|
||
|
|
self.assertTrue(dtb2.GetContents() != self.dtb.GetContents())
|
||
|
|
|
||
|
|
|
||
|
|
class TestFdtUtil(unittest.TestCase):
|
||
|
|
"""Tests for the fdt_util module
|
||
|
|
|
||
|
|
This module will likely be mostly replaced at some point, once upstream
|
||
|
|
libfdt has better Python support. For now, this provides tests for current
|
||
|
|
functionality.
|
||
|
|
"""
|
||
|
|
@classmethod
|
||
|
|
def setUpClass(cls):
|
||
|
|
tools.PrepareOutputDir(None)
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def tearDownClass(cls):
|
||
|
|
tools.FinaliseOutputDir()
|
||
|
|
|
||
|
|
def setUp(self):
|
||
|
|
self.dtb = fdt.FdtScan('tools/dtoc/dtoc_test_simple.dts')
|
||
|
|
self.node = self.dtb.GetNode('/spl-test')
|
||
|
|
|
||
|
|
def testGetInt(self):
|
||
|
|
self.assertEqual(1, fdt_util.GetInt(self.node, 'intval'))
|
||
|
|
self.assertEqual(3, fdt_util.GetInt(self.node, 'missing', 3))
|
||
|
|
|
||
|
|
with self.assertRaises(ValueError) as e:
|
||
|
|
self.assertEqual(3, fdt_util.GetInt(self.node, 'intarray'))
|
||
|
|
self.assertIn("property 'intarray' has list value: expecting a single "
|
||
|
|
'integer', str(e.exception))
|
||
|
|
|
||
|
|
def testGetString(self):
|
||
|
|
self.assertEqual('message', fdt_util.GetString(self.node, 'stringval'))
|
||
|
|
self.assertEqual('test', fdt_util.GetString(self.node, 'missing',
|
||
|
|
'test'))
|
||
|
|
|
||
|
|
with self.assertRaises(ValueError) as e:
|
||
|
|
self.assertEqual(3, fdt_util.GetString(self.node, 'stringarray'))
|
||
|
|
self.assertIn("property 'stringarray' has list value: expecting a "
|
||
|
|
'single string', str(e.exception))
|
||
|
|
|
||
|
|
def testGetBool(self):
|
||
|
|
self.assertEqual(True, fdt_util.GetBool(self.node, 'boolval'))
|
||
|
|
self.assertEqual(False, fdt_util.GetBool(self.node, 'missing'))
|
||
|
|
self.assertEqual(True, fdt_util.GetBool(self.node, 'missing', True))
|
||
|
|
self.assertEqual(False, fdt_util.GetBool(self.node, 'missing', False))
|
||
|
|
|
||
|
|
def testGetByte(self):
|
||
|
|
self.assertEqual(5, fdt_util.GetByte(self.node, 'byteval'))
|
||
|
|
self.assertEqual(3, fdt_util.GetByte(self.node, 'missing', 3))
|
||
|
|
|
||
|
|
with self.assertRaises(ValueError) as e:
|
||
|
|
fdt_util.GetByte(self.node, 'longbytearray')
|
||
|
|
self.assertIn("property 'longbytearray' has list value: expecting a "
|
||
|
|
'single byte', str(e.exception))
|
||
|
|
|
||
|
|
with self.assertRaises(ValueError) as e:
|
||
|
|
fdt_util.GetByte(self.node, 'intval')
|
||
|
|
self.assertIn("property 'intval' has length 4, expecting 1",
|
||
|
|
str(e.exception))
|
||
|
|
|
||
|
|
def testGetPhandleList(self):
|
||
|
|
dtb = fdt.FdtScan('tools/dtoc/dtoc_test_phandle.dts')
|
||
|
|
node = dtb.GetNode('/phandle-source2')
|
||
|
|
self.assertEqual([1], fdt_util.GetPhandleList(node, 'clocks'))
|
||
|
|
node = dtb.GetNode('/phandle-source')
|
||
|
|
self.assertEqual([1, 2, 11, 3, 12, 13, 1],
|
||
|
|
fdt_util.GetPhandleList(node, 'clocks'))
|
||
|
|
self.assertEqual(None, fdt_util.GetPhandleList(node, 'missing'))
|
||
|
|
|
||
|
|
def testGetDataType(self):
|
||
|
|
self.assertEqual(1, fdt_util.GetDatatype(self.node, 'intval', int))
|
||
|
|
self.assertEqual('message', fdt_util.GetDatatype(self.node, 'stringval',
|
||
|
|
str))
|
||
|
|
with self.assertRaises(ValueError) as e:
|
||
|
|
self.assertEqual(3, fdt_util.GetDatatype(self.node, 'boolval',
|
||
|
|
bool))
|
||
|
|
def testFdtCellsToCpu(self):
|
||
|
|
val = self.node.props['intarray'].value
|
||
|
|
self.assertEqual(0, fdt_util.fdt_cells_to_cpu(val, 0))
|
||
|
|
self.assertEqual(2, fdt_util.fdt_cells_to_cpu(val, 1))
|
||
|
|
|
||
|
|
dtb2 = fdt.FdtScan('tools/dtoc/dtoc_test_addr64.dts')
|
||
|
|
node2 = dtb2.GetNode('/test1')
|
||
|
|
val = node2.props['reg'].value
|
||
|
|
self.assertEqual(0x1234, fdt_util.fdt_cells_to_cpu(val, 2))
|
||
|
|
|
||
|
|
def testEnsureCompiled(self):
|
||
|
|
"""Test a degenerate case of this function"""
|
||
|
|
dtb = fdt_util.EnsureCompiled('tools/dtoc/dtoc_test_simple.dts')
|
||
|
|
self.assertEqual(dtb, fdt_util.EnsureCompiled(dtb))
|
||
|
|
|
||
|
|
def testGetPlainBytes(self):
|
||
|
|
self.assertEqual('fred', fdt_util.get_plain_bytes('fred'))
|
||
|
|
|
||
|
|
|
||
|
|
def RunTestCoverage():
|
||
|
|
"""Run the tests and check that we get 100% coverage"""
|
||
|
|
test_util.RunTestCoverage('tools/dtoc/test_fdt.py', None,
|
||
|
|
['tools/patman/*.py', '*test_fdt.py'], options.build_dir)
|
||
|
|
|
||
|
|
|
||
|
|
def RunTests(args):
|
||
|
|
"""Run all the test we have for the fdt model
|
||
|
|
|
||
|
|
Args:
|
||
|
|
args: List of positional args provided to fdt. This can hold a test
|
||
|
|
name to execute (as in 'fdt -t testFdt', for example)
|
||
|
|
"""
|
||
|
|
result = unittest.TestResult()
|
||
|
|
sys.argv = [sys.argv[0]]
|
||
|
|
test_name = args and args[0] or None
|
||
|
|
for module in (TestFdt, TestNode, TestProp, TestFdtUtil):
|
||
|
|
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
|
||
|
|
for _, err in result.errors:
|
||
|
|
print err
|
||
|
|
for _, err in result.failures:
|
||
|
|
print err
|
||
|
|
|
||
|
|
if __name__ != '__main__':
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
parser = OptionParser()
|
||
|
|
parser.add_option('-B', '--build-dir', type='string', default='b',
|
||
|
|
help='Directory containing the build output')
|
||
|
|
parser.add_option('-P', '--processes', type=int,
|
||
|
|
help='set number of processes to use for running tests')
|
||
|
|
parser.add_option('-t', '--test', action='store_true', dest='test',
|
||
|
|
default=False, help='run tests')
|
||
|
|
parser.add_option('-T', '--test-coverage', action='store_true',
|
||
|
|
default=False, help='run tests and check for 100% coverage')
|
||
|
|
(options, args) = parser.parse_args()
|
||
|
|
|
||
|
|
# Run our meagre tests
|
||
|
|
if options.test:
|
||
|
|
RunTests(args)
|
||
|
|
elif options.test_coverage:
|
||
|
|
RunTestCoverage()
|