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binman: Add 'min-size' entry property

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This property sets the minimum size of an entry, including padding but
not alignment. It can be used to reserve space for growth of an entry,
or to enforce a minimum offset for later entries in the section.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Samuel Holland 2023-01-21 17:25:16 -06:00 • committed by Simon Glass
parent 7e215ad05f
commit b01ae03c0b
4 changed files with 36 additions and 4 deletions
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4
tools/binman/entry.py
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@ -49,6 +49,7 @@ class Entry(object):
offset: Offset of entry within the section, None if not known yet (in
which case it will be calculated by Pack())
size: Entry size in bytes, None if not known
min_size: Minimum entry size in bytes
pre_reset_size: size as it was before ResetForPack(). This allows us to
keep track of the size we started with and detect size changes
uncomp_size: Size of uncompressed data in bytes, if the entry is
@ -114,6 +115,7 @@ class Entry(object):
self.name = node and (name_prefix + node.name) or 'none'
self.offset = None
self.size = None
self.min_size = 0
self.pre_reset_size = None
self.uncomp_size = None
self.data = None
@ -270,6 +272,7 @@ class Entry(object):
self.Raise("Please use 'extend-size' instead of 'expand-size'")
self.offset = fdt_util.GetInt(self._node, 'offset')
self.size = fdt_util.GetInt(self._node, 'size')
self.min_size = fdt_util.GetInt(self._node, 'min-size', 0)
self.orig_offset = fdt_util.GetInt(self._node, 'orig-offset')
self.orig_size = fdt_util.GetInt(self._node, 'orig-size')
if self.GetImage().copy_to_orig:
@ -507,6 +510,7 @@ class Entry(object):
else:
self.offset = tools.align(offset, self.align)
needed = self.pad_before + self.contents_size + self.pad_after
needed = max(needed, self.min_size)
needed = tools.align(needed, self.align_size)
size = self.size
if not size: