diff options
| -rw-r--r-- | tools/binman/README.entries | 16 | ||||
| -rw-r--r-- | tools/binman/etype/fill.py | 32 | ||||
| -rw-r--r-- | tools/binman/ftest.py | 13 | ||||
| -rw-r--r-- | tools/binman/test/69_fill.dts | 15 | ||||
| -rw-r--r-- | tools/binman/test/70_fill_no_size.dts | 14 | ||||
| -rw-r--r-- | tools/dtoc/fdt_util.py | 23 | ||||
| -rwxr-xr-x | tools/dtoc/test_fdt.py | 15 |
7 files changed, 127 insertions, 1 deletions
diff --git a/tools/binman/README.entries b/tools/binman/README.entries index 147dd40bff..6f09626b24 100644 --- a/tools/binman/README.entries +++ b/tools/binman/README.entries @@ -55,6 +55,22 @@ updating the EC on startup via software sync. +Entry: fill: An entry which is filled to a particular byte value +---------------------------------------------------------------- + +Properties / Entry arguments: + - fill-byte: Byte to use to fill the entry + +Note that the size property must be set since otherwise this entry does not +know how large it should be. + +You can often achieve the same effect using the pad-byte property of the +overall image, in that the space between entries will then be padded with +that byte. But this entry is sometimes useful for explicitly setting the +byte value of a region. + + + Entry: fmap: An entry which contains an Fmap section ---------------------------------------------------- diff --git a/tools/binman/etype/fill.py b/tools/binman/etype/fill.py new file mode 100644 index 0000000000..7210a8324a --- /dev/null +++ b/tools/binman/etype/fill.py @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0+ +# Copyright (c) 2018 Google, Inc +# Written by Simon Glass <sjg@chromium.org> +# + +from entry import Entry +import fdt_util + + +class Entry_fill(Entry): + """An entry which is filled to a particular byte value + + Properties / Entry arguments: + - fill-byte: Byte to use to fill the entry + + Note that the size property must be set since otherwise this entry does not + know how large it should be. + + You can often achieve the same effect using the pad-byte property of the + overall image, in that the space between entries will then be padded with + that byte. But this entry is sometimes useful for explicitly setting the + byte value of a region. + """ + def __init__(self, section, etype, node): + Entry.__init__(self, section, etype, node) + if not self.size: + self.Raise("'fill' entry must have a size property") + self.fill_value = fdt_util.GetByte(self._node, 'fill-byte', 0) + + def ObtainContents(self): + self.SetContents(chr(self.fill_value) * self.size) + return True diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py index 5428ee651a..4e467145d7 100644 --- a/tools/binman/ftest.py +++ b/tools/binman/ftest.py @@ -1235,6 +1235,19 @@ class TestFunctional(unittest.TestCase): data, _, _, _ = self._DoReadFileDtb('68_blob_named_by_arg.dts', entry_args=entry_args) + def testFill(self): + """Test for an fill entry type""" + data = self._DoReadFile('69_fill.dts') + expected = 8 * chr(0xff) + 8 * chr(0) + self.assertEqual(expected, data) + + def testFillNoSize(self): + """Test for an fill entry type with no size""" + with self.assertRaises(ValueError) as e: + self._DoReadFile('70_fill_no_size.dts') + self.assertIn("'fill' entry must have a size property", + str(e.exception)) + if __name__ == "__main__": unittest.main() diff --git a/tools/binman/test/69_fill.dts b/tools/binman/test/69_fill.dts new file mode 100644 index 0000000000..e372ea37aa --- /dev/null +++ b/tools/binman/test/69_fill.dts @@ -0,0 +1,15 @@ +// SPDX-License-Identifier: GPL-2.0+ +/dts-v1/; + +/ { + #address-cells = <1>; + #size-cells = <1>; + + binman { + size = <16>; + fill { + size = <8>; + fill-byte = [ff]; + }; + }; +}; diff --git a/tools/binman/test/70_fill_no_size.dts b/tools/binman/test/70_fill_no_size.dts new file mode 100644 index 0000000000..7b1fcf1b68 --- /dev/null +++ b/tools/binman/test/70_fill_no_size.dts @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0+ +/dts-v1/; + +/ { + #address-cells = <1>; + #size-cells = <1>; + + binman { + size = <16>; + fill { + fill-byte = [ff]; + }; + }; +}; diff --git a/tools/dtoc/fdt_util.py b/tools/dtoc/fdt_util.py index b229038569..d762f93a9a 100644 --- a/tools/dtoc/fdt_util.py +++ b/tools/dtoc/fdt_util.py @@ -148,6 +148,29 @@ def GetBool(node, propname, default=False): return True return default +def GetByte(node, propname, default=None): + """Get an byte from a property + + Args: + node: Node object to read from + propname: property name to read + default: Default value to use if the node/property do not exist + + Returns: + Byte value read, or default if none + """ + prop = node.props.get(propname) + if not prop: + return default + value = prop.value + if isinstance(value, list): + raise ValueError("Node '%s' property '%s' has list value: expecting " + "a single byte" % (node.name, propname)) + if len(value) != 1: + raise ValueError("Node '%s' property '%s' has length %d, expecting %d" % + (node.name, propname, len(value), 1)) + return ord(value[0]) + def GetDatatype(node, propname, datatype): """Get a value of a given type from a property diff --git a/tools/dtoc/test_fdt.py b/tools/dtoc/test_fdt.py index 03cf4b4f7c..38e1732f52 100755 --- a/tools/dtoc/test_fdt.py +++ b/tools/dtoc/test_fdt.py @@ -380,6 +380,20 @@ class TestFdtUtil(unittest.TestCase): 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 testGetDataType(self): self.assertEqual(1, fdt_util.GetDatatype(self.node, 'intval', int)) self.assertEqual('message', fdt_util.GetDatatype(self.node, 'stringval', @@ -387,7 +401,6 @@ class TestFdtUtil(unittest.TestCase): 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)) |