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![Simon Glass](/assets/img/avatar_default.png)
At present patman sets the python path on startup so that it can access the libraries it needs. If we convert to use absolute imports this is not necessary. Move patman to use absolute imports. This requires changes in tools which use the patman libraries (which is most of them). Signed-off-by: Simon Glass <sjg@chromium.org>
71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2018 Google, Inc
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# Written by Simon Glass <sjg@chromium.org>
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#
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# Entry-type module for a Flash map, as used by the flashrom SPI flash tool
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#
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from binman.entry import Entry
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from binman import fmap_util
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from patman import tools
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from patman.tools import ToHexSize
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from patman import tout
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class Entry_fmap(Entry):
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"""An entry which contains an Fmap section
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Properties / Entry arguments:
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None
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FMAP is a simple format used by flashrom, an open-source utility for
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reading and writing the SPI flash, typically on x86 CPUs. The format
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provides flashrom with a list of areas, so it knows what it in the flash.
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It can then read or write just a single area, instead of the whole flash.
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The format is defined by the flashrom project, in the file lib/fmap.h -
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see www.flashrom.org/Flashrom for more information.
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When used, this entry will be populated with an FMAP which reflects the
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entries in the current image. Note that any hierarchy is squashed, since
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FMAP does not support this. Also, CBFS entries appear as a single entry -
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the sub-entries are ignored.
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"""
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def __init__(self, section, etype, node):
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Entry.__init__(self, section, etype, node)
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def _GetFmap(self):
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"""Build an FMAP from the entries in the current image
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Returns:
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FMAP binary data
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"""
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def _AddEntries(areas, entry):
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entries = entry.GetEntries()
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tout.Debug("fmap: Add entry '%s' type '%s' (%s subentries)" %
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(entry.GetPath(), entry.etype, ToHexSize(entries)))
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if entries and entry.etype != 'cbfs':
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for subentry in entries.values():
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_AddEntries(areas, subentry)
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else:
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pos = entry.image_pos
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if pos is not None:
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pos -= entry.section.GetRootSkipAtStart()
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areas.append(fmap_util.FmapArea(pos or 0, entry.size or 0,
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tools.FromUnicode(entry.name), 0))
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entries = self.GetImage().GetEntries()
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areas = []
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for entry in entries.values():
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_AddEntries(areas, entry)
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return fmap_util.EncodeFmap(self.section.GetImageSize() or 0, self.name,
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areas)
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def ObtainContents(self):
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"""Obtain a placeholder for the fmap contents"""
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self.SetContents(self._GetFmap())
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return True
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def ProcessContents(self):
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return self.ProcessContentsUpdate(self._GetFmap())
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