tools/binman/fdt_test.py

   1 # SPDX-License-Identifier: GPL-2.0+
   2 # Copyright (c) 2016 Google, Inc
   3 # Written by Simon Glass <sjg@chromium.org>
   4 #
   5 # Test for the fdt modules
   6
   7 import os
   8 import sys
   9 import tempfile
  10 import unittest
  11
  12 import fdt
  13 from fdt import FdtScan
  14 import fdt_util
  15 import tools
  16
  17 class TestFdt(unittest.TestCase):
  18     @classmethod
  19     def setUpClass(self):
  20         self._binman_dir = os.path.dirname(os.path.realpath(sys.argv[0]))
  21         self._indir = tempfile.mkdtemp(prefix='binmant.')
  22         tools.PrepareOutputDir(self._indir, True)
  23
  24     def TestFile(self, fname):
  25         return os.path.join(self._binman_dir, 'test', fname)
  26
  27     def GetCompiled(self, fname):
  28         return fdt_util.EnsureCompiled(self.TestFile(fname))
  29
  30     def _DeleteProp(self, dt):
  31         node = dt.GetNode('/microcode/update@0')
  32         node.DeleteProp('data')
  33
  34     def testFdtNormal(self):
  35         fname = self.GetCompiled('34_x86_ucode.dts')
  36         dt = FdtScan(fname)
  37         self._DeleteProp(dt)
  38
  39     def testFdtNormalProp(self):
  40         fname = self.GetCompiled('45_prop_test.dts')
  41         dt = FdtScan(fname)
  42         node = dt.GetNode('/binman/intel-me')
  43         self.assertEquals('intel-me', node.name)
  44         val = fdt_util.GetString(node, 'filename')
  45         self.assertEquals(str, type(val))
  46         self.assertEquals('me.bin', val)
  47
  48         prop = node.props['intval']
  49         self.assertEquals(fdt.TYPE_INT, prop.type)
  50         self.assertEquals(3, fdt_util.GetInt(node, 'intval'))
  51
  52         prop = node.props['intarray']
  53         self.assertEquals(fdt.TYPE_INT, prop.type)
  54         self.assertEquals(list, type(prop.value))
  55         self.assertEquals(2, len(prop.value))
  56         self.assertEquals([5, 6],
  57                           [fdt_util.fdt32_to_cpu(val) for val in prop.value])
  58
  59         prop = node.props['byteval']
  60         self.assertEquals(fdt.TYPE_BYTE, prop.type)
  61         self.assertEquals(chr(8), prop.value)
  62
  63         prop = node.props['bytearray']
  64         self.assertEquals(fdt.TYPE_BYTE, prop.type)
  65         self.assertEquals(list, type(prop.value))
  66         self.assertEquals(str, type(prop.value[0]))
  67         self.assertEquals(3, len(prop.value))
  68         self.assertEquals([chr(1), '#', '4'], prop.value)
  69
  70         prop = node.props['longbytearray']
  71         self.assertEquals(fdt.TYPE_INT, prop.type)
  72         self.assertEquals(0x090a0b0c, fdt_util.GetInt(node, 'longbytearray'))
  73
  74         prop = node.props['stringval']
  75         self.assertEquals(fdt.TYPE_STRING, prop.type)
  76         self.assertEquals('message2', fdt_util.GetString(node, 'stringval'))
  77
  78         prop = node.props['stringarray']
  79         self.assertEquals(fdt.TYPE_STRING, prop.type)
  80         self.assertEquals(list, type(prop.value))
  81         self.assertEquals(3, len(prop.value))
  82         self.assertEquals(['another', 'multi-word', 'message'], prop.value)