mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-20 10:08:00 +09:00
99ed4a2e97
This file was used to select between the normal and fallback libfdt implementations. Now that we only have one, it is not needed. Drop it and fix up all users. Signed-off-by: Simon Glass <sjg@chromium.org>
73 lines
2.5 KiB
Python
73 lines
2.5 KiB
Python
# Copyright (c) 2016 Google, Inc
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## Written by Simon Glass <sjg@chromium.org>
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Entry-type module for U-Boot device tree with the microcode removed
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#
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import fdt
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from entry import Entry
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from blob import Entry_blob
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import tools
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class Entry_u_boot_dtb_with_ucode(Entry_blob):
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"""A U-Boot device tree file, with the microcode removed
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See Entry_u_boot_ucode for full details of the 3 entries involved in this
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process.
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"""
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def __init__(self, image, etype, node):
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Entry_blob.__init__(self, image, etype, node)
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self.ucode_data = ''
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self.collate = False
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self.ucode_offset = None
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self.ucode_size = None
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def GetDefaultFilename(self):
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return 'u-boot.dtb'
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def ObtainContents(self):
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Entry_blob.ObtainContents(self)
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# If the image does not need microcode, there is nothing to do
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ucode_dest_entry = self.image.FindEntryType('u-boot-spl-with-ucode-ptr')
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if not ucode_dest_entry or not ucode_dest_entry.target_pos:
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ucode_dest_entry = self.image.FindEntryType('u-boot-with-ucode-ptr')
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if not ucode_dest_entry or not ucode_dest_entry.target_pos:
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return True
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# Create a new file to hold the copied device tree
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dtb_name = 'u-boot-dtb-with-ucode.dtb'
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fname = tools.GetOutputFilename(dtb_name)
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with open(fname, 'wb') as fd:
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fd.write(self.data)
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# Remove the microcode
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dtb = fdt.FdtScan(fname)
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ucode = dtb.GetNode('/microcode')
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if not ucode:
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raise self.Raise("No /microcode node found in '%s'" % fname)
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# There's no need to collate it (move all microcode into one place)
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# if we only have one chunk of microcode.
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self.collate = len(ucode.subnodes) > 1
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for node in ucode.subnodes:
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data_prop = node.props.get('data')
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if data_prop:
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self.ucode_data += ''.join(data_prop.bytes)
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if self.collate:
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prop = node.DeleteProp('data')
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else:
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# Find the offset in the device tree of the ucode data
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self.ucode_offset = data_prop.GetOffset() + 12
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self.ucode_size = len(data_prop.bytes)
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if self.collate:
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dtb.Pack()
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dtb.Flush()
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# Make this file the contents of this entry
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self._pathname = fname
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self.ReadContents()
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return True
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