mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
3d43338293
At present there is a command-line flag to disable substitution of expanded entries. Add an option to the entry node as well, so it can be controlled at the node level. Add a test to cover this. Fix up the comment to the checkSymbols() function it uses, while we are here. Signed-off-by: Simon Glass <sjg@chromium.org>
46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2016 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 tpl/u-boot-tpl.bin
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#
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from binman import elf
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from binman.entry import Entry
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from binman.etype.blob import Entry_blob
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class Entry_u_boot_tpl(Entry_blob):
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"""U-Boot TPL binary
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Properties / Entry arguments:
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- filename: Filename of u-boot-tpl.bin (default 'tpl/u-boot-tpl.bin')
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This is the U-Boot TPL (Tertiary Program Loader) binary. This is a small
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binary which loads before SPL, typically into on-chip SRAM. It is
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responsible for locating, loading and jumping to SPL, the next-stage
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loader. Note that SPL is not relocatable so must be loaded to the correct
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address in SRAM, or written to run from the correct address if direct
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flash execution is possible (e.g. on x86 devices).
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SPL can access binman symbols at runtime. See:
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'Access to binman entry offsets at run time (symbols)'
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in the binman README for more information.
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The ELF file 'tpl/u-boot-tpl' must also be available for this to work, since
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binman uses that to look up symbols to write into the TPL binary.
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Note that this entry is automatically replaced with u-boot-tpl-expanded
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unless --no-expanded is used or the node has a 'no-expanded' property.
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"""
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def __init__(self, section, etype, node):
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super().__init__(section, etype, node)
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self.elf_fname = 'tpl/u-boot-tpl'
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def GetDefaultFilename(self):
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return 'tpl/u-boot-tpl.bin'
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def WriteSymbols(self, section):
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elf.LookupAndWriteSymbols(self.elf_fname, self, section.GetImage())
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