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binman: Support optional external blobs

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Some blobs are actually not necessary for the board to work correctly. Add
a property to allow this to be indicated. Missing optional blobs do not
cause a build failure.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2023-01-07 14:07:15 -07:00
parent 2f80c5ef13
commit 67a0501708
8 changed files with 92 additions and 11 deletions
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25
tools/binman/entry.py
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@@ -73,7 +73,9 @@ class Entry(object):
compress: Compression algoithm used (e.g. 'lz4'), 'none' if none
orig_offset: Original offset value read from node
orig_size: Original size value read from node
missing: True if this entry is missing its contents
missing: True if this entry is missing its contents. Note that if it is
optional, this entry will not appear in the list generated by
entry.CheckMissing() since it is considered OK for it to be missing.
allow_missing: Allow children of this entry to be missing (used by
subclasses such as Entry_section)
allow_fake: Allow creating a dummy fake file if the blob file is not
@@ -95,6 +97,7 @@ class Entry(object):
the entry itself, allowing it to vanish in certain circumstances.
An absent entry is removed during processing so that it does not
appear in the map
optional (bool): True if this entry contains an optional external blob
"""
fake_dir = None
@@ -138,6 +141,7 @@ class Entry(object):
self.elf_fname = None
self.auto_write_symbols = auto_write_symbols
self.absent = False
self.optional = False
@staticmethod
def FindEntryClass(etype, expanded):
@@ -289,6 +293,7 @@ class Entry(object):
self.offset_unset = fdt_util.GetBool(self._node, 'offset-unset')
self.extend_size = fdt_util.GetBool(self._node, 'extend-size')
self.missing_msg = fdt_util.GetString(self._node, 'missing-msg')
self.optional = fdt_util.GetBool(self._node, 'optional')
# This is only supported by blobs and sections at present
self.compress = fdt_util.GetString(self._node, 'compress', 'none')
@@ -1039,14 +1044,15 @@ features to produce new behaviours.
self.allow_fake = allow_fake
def CheckMissing(self, missing_list):
"""Check if any entries in this section have missing external blobs
"""Check if the entry has missing external blobs
If there are missing blobs, the entries are added to the list
If there are missing (non-optional) blobs, the entries are added to the
list
Args:
missing_list: List of Entry objects to be added to
"""
if self.missing:
if self.missing and not self.optional:
missing_list.append(self)
def check_fake_fname(self, fname, size=0):
@@ -1085,6 +1091,17 @@ features to produce new behaviours.
# This is meaningless for anything other than blobs
pass
def CheckOptional(self, optional_list):
"""Check if the entry has missing but optional external blobs
If there are missing (optional) blobs, the entries are added to the list
Args:
optional_list (list): List of Entry objects to be added to
"""
if self.missing and self.optional:
optional_list.append(self)
def GetAllowMissing(self):
"""Get whether a section allows missing external blobs