mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-22 02:49:44 +09:00
0668492728
When creating an entry, check for an expanded version of that entry, then
use it instead. This allows, for example use of:
u-boot {
};
instead of having to write out in full:
u-boot {
type = "section";
u-boot-nodtb {
};
u-boot-dtb {
};
};
Add an implementaion of this and associated documentation.
Signed-off-by: Simon Glass <sjg@chromium.org>
43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
# SPDX-License-Identifier: GPL-2.0+
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# Copyright 2021 Google LLC
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# Written by Simon Glass <sjg@chromium.org>
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#
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# Entry-type module for 'u-boot-tpl-nodtb.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_nodtb(Entry_blob):
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"""TPL binary without device tree appended
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Properties / Entry arguments:
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- filename: Filename to include (default 'tpl/u-boot-tpl-nodtb.bin')
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This is the U-Boot TPL binary, It does not include a device tree blob at
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the end of it so may not be able to work without it, assuming TPL needs
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a device tree to operate on your platform. You can add a u-boot-tpl-dtb
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entry after this one, or use a u-boot-tpl entry instead, which normally
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expands to a section containing u-boot-tpl-dtb, u-boot-tpl-bss-pad and
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u-boot-tpl-dtb
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TPL 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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"""
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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-nodtb.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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