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binman: Add missing comments to bsection

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Some functions lack comments in this file. Add comments to cover this
functionality.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2019-07-08 13:18:29 -06:00
parent c7d8035ec1
commit 36b246e71f
1 changed files with 23 additions and 0 deletions
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23
tools/binman/bsection.py
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@ -452,13 +452,36 @@ class Section(object):
source_entry.Raise("Cannot find entry for node '%s'" % node.name) source_entry.Raise("Cannot find entry for node '%s'" % node.name)
def ExpandSize(self, size): def ExpandSize(self, size):
"""Change the size of an entry
Args:
size: New size for entry
"""
if size != self._size: if size != self._size:
self._size = size self._size = size
def GetRootSkipAtStart(self): def GetRootSkipAtStart(self):
"""Get the skip-at-start value for the top-level section
This is used to find out the starting offset for root section that
contains this section. If this is a top-level section then it returns
the skip-at-start offset for this section.
This is used to get the absolute position of section within the image.
Returns:
Integer skip-at-start value for the root section containing this
section
"""
if self._parent_section: if self._parent_section:
return self._parent_section.GetRootSkipAtStart() return self._parent_section.GetRootSkipAtStart()
return self._skip_at_start return self._skip_at_start
def GetImageSize(self): def GetImageSize(self):
"""Get the size of the image containing this section
Returns:
Image size as an integer number of bytes, which may be None if the
image size is dynamic and its sections have not yet been packed
"""
return self._image._size return self._image._size