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- # SPDX-License-Identifier: GPL-2.0+
- # Copyright (c) 2018 Google, Inc
- # Written by Simon Glass <sjg@chromium.org>
- #
- from collections import OrderedDict
- from binman.entry import Entry, EntryArg
- from dtoc import fdt_util
- from patman import tools
- class Entry_text(Entry):
- """An entry which contains text
- The text can be provided either in the node itself or by a command-line
- argument. There is a level of indirection to allow multiple text strings
- and sharing of text.
- Properties / Entry arguments:
- text-label: The value of this string indicates the property / entry-arg
- that contains the string to place in the entry
- <xxx> (actual name is the value of text-label): contains the string to
- place in the entry.
- <text>: The text to place in the entry (overrides the above mechanism).
- This is useful when the text is constant.
- Example node:
- text {
- size = <50>;
- text-label = "message";
- };
- You can then use:
- binman -amessage="this is my message"
- and binman will insert that string into the entry.
- It is also possible to put the string directly in the node:
- text {
- size = <8>;
- text-label = "message";
- message = "a message directly in the node"
- };
- or just:
- text {
- size = <8>;
- text = "some text directly in the node"
- };
- The text is not itself nul-terminated. This can be achieved, if required,
- by setting the size of the entry to something larger than the text.
- """
- def __init__(self, section, etype, node):
- Entry.__init__(self, section, etype, node)
- value = fdt_util.GetString(self._node, 'text')
- if value:
- value = tools.ToBytes(value)
- else:
- label, = self.GetEntryArgsOrProps([EntryArg('text-label', str)])
- self.text_label = label
- if self.text_label:
- value, = self.GetEntryArgsOrProps([EntryArg(self.text_label,
- str)])
- value = tools.ToBytes(value) if value is not None else value
- self.value = value
- def ObtainContents(self):
- if not self.value:
- self.Raise("No value provided for text label '%s'" %
- self.text_label)
- self.SetContents(self.value)
- return True
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