diff options
Diffstat (limited to 'tools/binman/etype/section.py')
| -rw-r--r-- | tools/binman/etype/section.py | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/tools/binman/etype/section.py b/tools/binman/etype/section.py index cce1500b4e..c3bac026c1 100644 --- a/tools/binman/etype/section.py +++ b/tools/binman/etype/section.py @@ -36,6 +36,8 @@ class Entry_section(Entry): file, since the first 16 bytes are skipped when writing. name-prefix: Adds a prefix to the name of every entry in the section when writing out the map + align_default: Default alignment for this section, if no alignment is + given in the entry Properties: allow_missing: True if this section permits external blobs to be @@ -76,6 +78,7 @@ class Entry_section(Entry): if self._skip_at_start is None: self._skip_at_start = 0 self._name_prefix = fdt_util.GetString(self._node, 'name-prefix') + self.align_default = fdt_util.GetInt(self._node, 'align-default', 0) filename = fdt_util.GetString(self._node, 'filename') if filename: self._filename = filename @@ -180,7 +183,7 @@ class Entry_section(Entry): return data - def _BuildSectionData(self): + def _BuildSectionData(self, required): """Build the contents of a section This places all entries at the right place, dealing with padding before @@ -188,13 +191,20 @@ class Entry_section(Entry): pad-before and pad-after properties in the section items) since that is handled by the parent section. + Args: + required: True if the data must be present, False if it is OK to + return None + Returns: Contents of the section (bytes) """ section_data = b'' for entry in self._entries.values(): - data = self.GetPaddedDataForEntry(entry, entry.GetData()) + entry_data = entry.GetData(required) + if not required and entry_data is None: + return None + data = self.GetPaddedDataForEntry(entry, entry_data) # Handle empty space before the entry pad = (entry.offset or 0) - self._skip_at_start - len(section_data) if pad > 0: @@ -226,18 +236,24 @@ class Entry_section(Entry): data = self.GetData() return section.GetPaddedDataForEntry(self, data) - def GetData(self): + def GetData(self, required=True): """Get the contents of an entry This builds the contents of the section, stores this as the contents of the section and returns it + Args: + required: True if the data must be present, False if it is OK to + return None + Returns: bytes content of the section, made up for all all of its subentries. This excludes any padding. If the section is compressed, the compressed data is returned """ - data = self._BuildSectionData() + data = self._BuildSectionData(required) + if data is None: + return None self.SetContents(data) return data @@ -263,7 +279,7 @@ class Entry_section(Entry): self._SortEntries() self._ExpandEntries() - data = self._BuildSectionData() + data = self._BuildSectionData(True) self.SetContents(data) self.CheckSize() @@ -360,16 +376,20 @@ class Entry_section(Entry): def GetEntries(self): return self._entries - def GetContentsByPhandle(self, phandle, source_entry): + def GetContentsByPhandle(self, phandle, source_entry, required): """Get the data contents of an entry specified by a phandle This uses a phandle to look up a node and and find the entry - associated with it. Then it returnst he contents of that entry. + associated with it. Then it returns the contents of that entry. + + The node must be a direct subnode of this section. Args: phandle: Phandle to look up (integer) source_entry: Entry containing that phandle (used for error reporting) + required: True if the data must be present, False if it is OK to + return None Returns: data from associated entry (as a string), or None if not found @@ -379,7 +399,7 @@ class Entry_section(Entry): source_entry.Raise("Cannot find node for phandle %d" % phandle) for entry in self._entries.values(): if entry._node == node: - return entry.GetData() + return entry.GetData(required) source_entry.Raise("Cannot find entry for node '%s'" % node.name) def LookupSymbol(self, sym_name, optional, msg, base_addr, entries=None): |