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https://github.com/brain-hackers/u-boot-brain
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![Simon Glass](/assets/img/avatar_default.png)
When building for 64-bit x86 we need an SPL binary in the ROM. Add support for this. Also increase entry test code coverage to 100%. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Bin Meng <bmeng.cn@gmail.com>
79 lines
2.7 KiB
Python
79 lines
2.7 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_select
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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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fdt = fdt_select.FdtScan(fname)
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fdt.Scan()
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ucode = fdt.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 not self.collate:
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poffset = data_prop.GetOffset()
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if poffset is None:
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# We cannot obtain a property offset. Collate instead.
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self.collate = True
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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 = poffset + 12
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self.ucode_size = len(data_prop.bytes)
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if self.collate:
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prop = node.DeleteProp('data')
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if self.collate:
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fdt.Pack()
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fdt.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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