self.assertEqual('nodtb with microcode' + pos_and_size +
' somewhere in here', first)
- def _RunPackUbootSingleMicrocode(self, collate):
+ def _RunPackUbootSingleMicrocode(self):
"""Test that x86 microcode can be handled correctly
We expect to see the following in the image, in order:
# We need the libfdt library to run this test since only that allows
# finding the offset of a property. This is required by
# Entry_u_boot_dtb_with_ucode.ObtainContents().
- if not fdt_select.have_libfdt:
- return
data = self._DoReadFile('35_x86_single_ucode.dts', True)
second = data[len(U_BOOT_NODTB_DATA):]
third = second[fdt_len:]
second = second[:fdt_len]
- if not collate:
- ucode_data = struct.pack('>2L', 0x12345678, 0x12345679)
- self.assertIn(ucode_data, second)
- ucode_pos = second.find(ucode_data) + len(U_BOOT_NODTB_DATA)
+ ucode_data = struct.pack('>2L', 0x12345678, 0x12345679)
+ self.assertIn(ucode_data, second)
+ ucode_pos = second.find(ucode_data) + len(U_BOOT_NODTB_DATA)
- # Check that the microcode pointer was inserted. It should match the
- # expected position and size
- pos_and_size = struct.pack('<2L', 0xfffffe00 + ucode_pos,
- len(ucode_data))
- first = data[:len(U_BOOT_NODTB_DATA)]
- self.assertEqual('nodtb with microcode' + pos_and_size +
- ' somewhere in here', first)
+ # Check that the microcode pointer was inserted. It should match the
+ # expected position and size
+ pos_and_size = struct.pack('<2L', 0xfffffe00 + ucode_pos,
+ len(ucode_data))
+ first = data[:len(U_BOOT_NODTB_DATA)]
+ self.assertEqual('nodtb with microcode' + pos_and_size +
+ ' somewhere in here', first)
def testPackUbootSingleMicrocode(self):
"""Test that x86 microcode can be handled correctly with fdt_normal.
"""
- self._RunPackUbootSingleMicrocode(False)
-
- def testPackUbootSingleMicrocodeFallback(self):
- """Test that x86 microcode can be handled correctly with fdt_fallback.
-
- This only supports collating the microcode.
- """
- try:
- old_val = fdt_select.UseFallback(True)
- self._RunPackUbootSingleMicrocode(True)
- finally:
- fdt_select.UseFallback(old_val)
+ self._RunPackUbootSingleMicrocode()
def testUBootImg(self):
"""Test that u-boot.img can be put in a file"""
def testMicrocodeWithoutPtrInElf(self):
"""Test that a U-Boot binary without the microcode symbol is detected"""
# ELF file without a '_dt_ucode_base_size' symbol
- if not fdt_select.have_libfdt:
- return
try:
with open(self.TestFile('u_boot_no_ucode_ptr')) as fd:
TestFunctional._MakeInputFile('u-boot', fd.read())
with self.assertRaises(ValueError) as e:
- self._RunPackUbootSingleMicrocode(False)
+ self._RunPackUbootSingleMicrocode()
self.assertIn("Node '/binman/u-boot-with-ucode-ptr': Cannot locate "
"_dt_ucode_base_size symbol in u-boot", str(e.exception))
+++ /dev/null
-#!/usr/bin/python
-#
-# Copyright (C) 2016 Google, Inc
-# Written by Simon Glass <sjg@chromium.org>
-#
-# SPDX-License-Identifier: GPL-2.0+
-#
-
-import command
-import fdt
-from fdt import Fdt, NodeBase, PropBase
-import fdt_util
-import sys
-
-# This deals with a device tree, presenting it as a list of Node and Prop
-# objects, representing nodes and properties, respectively.
-#
-# This implementation uses the fdtget tool to access the device tree, so it
-# is not very efficient for larger trees. The tool is called once for each
-# node and property in the tree.
-
-class Prop(PropBase):
- """A device tree property
-
- Properties:
- name: Property name (as per the device tree)
- value: Property value as a string of bytes, or a list of strings of
- bytes
- type: Value type
- """
- def __init__(self, node, name, byte_list_str):
- PropBase.__init__(self, node, 0, name)
- if not byte_list_str.strip():
- self.type = fdt.TYPE_BOOL
- return
- self.bytes = [chr(int(byte, 16))
- for byte in byte_list_str.strip().split(' ')]
- self.type, self.value = self.BytesToValue(''.join(self.bytes))
-
-
-class Node(NodeBase):
- """A device tree node
-
- Properties:
- name: Device tree node tname
- path: Full path to node, along with the node name itself
- _fdt: Device tree object
- subnodes: A list of subnodes for this node, each a Node object
- props: A dict of properties for this node, each a Prop object.
- Keyed by property name
- """
- def __init__(self, fdt, offset, name, path):
- NodeBase.__init__(self, fdt, offset, name, path)
-
- def Scan(self):
- """Scan a node's properties and subnodes
-
- This fills in the props and subnodes properties, recursively
- searching into subnodes so that the entire tree is built.
- """
- for name, byte_list_str in self._fdt.GetProps(self.path).items():
- prop = Prop(self, name, byte_list_str)
- self.props[name] = prop
-
- for name in self._fdt.GetSubNodes(self.path):
- sep = '' if self.path[-1] == '/' else '/'
- path = self.path + sep + name
- node = Node(self._fdt, 0, name, path)
- self.subnodes.append(node)
-
- node.Scan()
-
- def DeleteProp(self, prop_name):
- """Delete a property of a node
-
- The property is deleted using fdtput.
-
- Args:
- prop_name: Name of the property to delete
- Raises:
- CommandError if the property does not exist
- """
- args = [self._fdt._fname, '-d', self.path, prop_name]
- command.Output('fdtput', *args)
- del self.props[prop_name]
-
-class FdtFallback(Fdt):
- """Provides simple access to a flat device tree blob using fdtget/fdtput
-
- Properties:
- See superclass
- """
-
- def __init__(self, fname):
- Fdt.__init__(self, fname)
- if self._fname:
- self._fname = fdt_util.EnsureCompiled(self._fname)
-
- def GetSubNodes(self, node):
- """Returns a list of sub-nodes of a given node
-
- Args:
- node: Node name to return children from
-
- Returns:
- List of children in the node (each a string node name)
-
- Raises:
- CmdError: if the node does not exist.
- """
- out = command.Output('fdtget', self._fname, '-l', node)
- return out.strip().splitlines()
-
- def GetProps(self, node):
- """Get all properties from a node
-
- Args:
- node: full path to node name to look in
-
- Returns:
- A dictionary containing all the properties, indexed by node name.
- The entries are simply strings - no decoding of lists or numbers
- is done.
-
- Raises:
- CmdError: if the node does not exist.
- """
- out = command.Output('fdtget', self._fname, node, '-p')
- props = out.strip().splitlines()
- props_dict = {}
- for prop in props:
- name = prop
- props_dict[prop] = self.GetProp(node, name)
- return props_dict
-
- def GetProp(self, node, prop, default=None, typespec=None):
- """Get a property from a device tree.
-
- This looks up the given node and property, and returns the value as a
- string,
-
- If the node or property does not exist, this will return the default
- value.
-
- Args:
- node: Full path to node to look up.
- prop: Property name to look up.
- default: Default value to return if nothing is present in the fdt,
- or None to raise in this case. This will be converted to a
- string.
- typespec: Type character to use (None for default, 's' for string)
-
- Returns:
- string containing the property value.
-
- Raises:
- CmdError: if the property does not exist and no default is provided.
- """
- args = [self._fname, node, prop, '-t', 'bx']
- if default is not None:
- args += ['-d', str(default)]
- if typespec is not None:
- args += ['-t', typespec]
- out = command.Output('fdtget', *args)
- return out.strip()
-
- @classmethod
- def Node(self, fdt, offset, name, path):
- """Create a new node
-
- This is used by Fdt.Scan() to create a new node using the correct
- class.
-
- Args:
- fdt: Fdt object
- offset: Offset of node
- name: Node name
- path: Full path to node
- """
- node = Node(fdt, offset, name, path)
- return node
projects / u-boot / commitdiff