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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
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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