3rd Party Software Acknowledgments
Limine includes software from other projects. Some of it is fetched by the
./bootstrap script, which copies some of its files into Limine's own source
tree, and release tarballs ship it as if ./bootstrap had already been run.
The rest is code from other projects kept in, or adapted into, Limine's own
source files. This file covers all of it.
Binary copies of Limine, such as Limine's binary release archives and packages built from source, do not come with the source files in which these projects' notices appear. This file therefore reproduces, for every project with code in Limine's binaries, its copyright notices and the full text of its license, and must accompany those binaries.
This software is NOT covered by the License as contained inside the COPYING
file as present at the root of the source tree, or, for installed copies,
present at ${DOCDIR}/COPYING (assuming the file has not been otherwise
removed by the packager). It is instead licensed as described in this file,
and by the notices in its source files.
Summary
A non-binding, informal summary of these projects, and of the licenses Limine uses them under, in SPDX format, follows. Where a project, or part of one, is offered under a choice of licenses, only the one chosen by the Limine developers is listed. The notices further below give the full terms.
Fetched by ./bootstrap
cc-runtime (Apache-2.0 WITH LLVM-exception) is used to provide runtime libgcc-like routines.
./bootstrapcopies itscc-runtime.ctocommon/cc-runtime.s2.c.Freestanding C Headers (0BSD) provide GCC and Clang compatible freestanding C headers.
Limine Boot Protocol (0BSD) has the C/C++ header and the specification text of the Limine Boot Protocol.
PicoEFI (multiple licenses, see list below) provides the UEFI headers, the linker scripts Limine's own are based on, and the relocation and entry code built into Limine's UEFI binaries.
- BSD-2-Clause
- BSD-2-Clause-Patent
- BSD-3-Clause
- BSD-Source-Code-no-disclaimer
- MIT
Flanterm (BSD-2-Clause) is used for text related screen drawing.
stb_image (hardened) (MIT) is used for wallpaper image loading.
./bootstrapcopies itsstb_image.htocommon/lib/stb_image.h, and patches it withcommon/stb_image.patch.libfdt (BSD-2-Clause) is used for manipulating Flat Device Trees.
pdgzip (0BSD) is used to provide the transparent gzip decompression layer for loaded files.
./bootstrapcopies itspdgzip.candpdgzip.htocommon/compress/.
Release tarballs carry the other projects whole, but only the files copied out of cc-runtime, stb_image, and pdgzip, which keep their notices.
In Limine's own source tree
The
multiboot2.hheader of the Multiboot2 Specification (MIT) is copied tocommon/protos/multiboot2.h.The QOI reference decoder (MIT) is adapted in
common/lib/qoi.c, for wallpaper image loading.The PCG reference implementation (Apache-2.0) is adapted in
common/lib/rand.s2.c.The BLAKE2 reference implementation (CC0-1.0) is the basis of
common/crypt/blake2b.c.LAI (MIT) is the basis of
acpi_checksum()incommon/lib/acpi.s2.c.The Micro LZMA decoder (CC-BY-3.0) is modified, under BSD-2-Clause terms, into the limlz decoder in
stage1/decompressor.asm.The OSDev Wiki (CC0-1.0, save for the older code noted below) is the source of code in
common/drivers/gop.c,common/drivers/mouse.c,common/drivers/vga_textmode.c, andcommon/sys/a20.s2.c.
Notices
Limine's BIOS binaries are limine-bios.sys and the boot sector images
limine-bios-cd.bin, limine-bios-hdd.bin, and limine-bios-pxe.bin. The
boot sector images carry the stage 1 decompressor, and a compressed copy of
the BIOS stage 2, which is built from the *.s2.* sources. The limine tool
embeds limine-bios-hdd.bin, which Limine's binary release archives also ship
as limine-bios-hdd.h. Limine's UEFI binaries are the BOOT*.EFI files, which
limine-uefi-cd.bin also carries.
cc-runtime
Built into Limine's BIOS and UEFI binaries, the BIOS stage 2 included, and so
into the limine tool. Its code comes from the compiler-rt library of the
LLVM Project, whose license file follows.
==============================================================================
The LLVM Project is under the Apache License v2.0 with LLVM Exceptions:
==============================================================================
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Freestanding C Headers
Used to build Limine's BIOS and UEFI binaries.
Copyright (C) 2022-2026 Mintsuki and contributors.
Permission to use, copy, modify, and/or distribute this software for any
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Limine Boot Protocol
Its header is used to build Limine's BIOS and UEFI binaries.
Copyright (C) 2022-2026 Mintsuki and contributors.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.
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PicoEFI
Its relocation and entry code is built into Limine's UEFI binaries, which are built using its headers, and Limine's own UEFI linker scripts are based on its linker scripts. Each part is covered by the notice below that names it.
Relocation code, and IA-32 and x86-64 entry code
The reloc.c files of every architecture, and ia32/entry.S and
x86_64/entry.S.
Copyright (C) 1999 Hewlett-Packard Co.
Contributed by David Mosberger <davidm@hpl.hp.com>.
Copyright (C) 2005 Intel Co.
Contributed by Fenghua Yu <fenghua.yu@intel.com>.
Copyright (C) 2014 Linaro Ltd. <ard.biesheuvel@linaro.org>
Copyright (C) 2018 Alexander Graf <agraf@suse.de>
Copyright (C) 2021 Loongson Technology Corporation Limited. <zhoumingtao@loongson.cn>
Copyright (C) 2022-2026 Mintsuki and contributors.
Copyright (C) 2026 Mintsuki and contributors.
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Copyright (C) 2014 - 2015 Linaro Ltd.
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Copyright (C) 2018 Alexander Graf <agraf@suse.de>
Copyright (C) 2021 Loongson Technology Corporation Limited. <zhoumingtao@loongson.cn>
Copyright (C) 2021 Loongson Technology Corporation Limited.
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Headers
The headers in inc/ not named elsewhere in this section.
Copyright (c) 1998-2000 Intel Corporation
Copyright (c) 1998 Intel Corporation
Copyright (c) 1999 Intel Corporation
Copyright (c) Intel 1999
Copyright (c) 2000 Intel Corporation
Copyright (c) 200 Intel Corporation
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Copyright (c) 1996-1998 John D. Polstra.
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Copyright (c) 2017, 2018 Dell EMC
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Flanterm
Built into Limine's BIOS and UEFI binaries.
Copyright (C) 2022-2026 Mintsuki and contributors.
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stb_image
Built into Limine's BIOS and UEFI binaries. Limine uses it under the first of the alternatives below, the MIT License.
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libfdt
Built into Limine's BIOS and UEFI binaries. Limine uses it under the following terms, rather than the GNU General Public License version 2 or later it is also offered under.
Copyright (C) 2006 David Gibson, IBM Corporation.
Copyright (C) 2012 David Gibson, IBM Corporation.
Copyright (C) 2014 David Gibson <david@gibson.dropbear.id.au>
Copyright 2012 Kim Phillips, Freescale Semiconductor.
Copyright (C) 2016 Free Electrons
Copyright (C) 2016 NextThing Co.
Copyright (C) 2018 embedded brains GmbH
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
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2. Redistributions in binary form must reproduce the above copyright
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pdgzip
Built into Limine's BIOS and UEFI binaries.
Copyright (C) 2026 Kamila Szewczyk <k@iczelia.net>.
Permission to use, copy, modify, and/or distribute this software for any
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Multiboot2 Specification
common/protos/multiboot2.h is copied from the Multiboot2 Specification, and
used to build Limine's BIOS and UEFI binaries.
Copyright (C) 1999,2003,2007,2008,2009,2010 Free Software Foundation, Inc.
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QOI
Limine's QOI decoder (common/lib/qoi.c) is adapted from the
QOI reference decoder, and built into
Limine's BIOS and UEFI binaries.
Copyright (c) 2021, Dominic Szablewski - https://phoboslab.org
Permission is hereby granted, free of charge, to any person obtaining a copy
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PCG
Limine's PCG32 generator (common/lib/rand.s2.c) is adapted from the
PCG reference implementation, and
built into Limine's BIOS and UEFI binaries, the BIOS stage 2 included, and so
into the limine tool.
Copyright 2014 Melissa O'Neill <oneill@pcg-random.org>
Licensed under the Apache License, Version 2.0 (the "License");
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BLAKE2
Limine's BLAKE2b implementation (common/crypt/blake2b.c) is based on the
BLAKE2 reference implementation, and built
into Limine's BIOS and UEFI binaries. Limine uses it under CC0 1.0 Universal,
whose text is at the end of this file.
BLAKE2 reference source code package - reference C implementations
Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
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More information about the BLAKE2 hash function can be found at
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LAI
acpi_checksum() in common/lib/acpi.s2.c is based on
lai_bios_calc_checksum() from LAI, and
built into Limine's BIOS and UEFI binaries, the BIOS stage 2 included, and so
into the limine tool.
MIT License
Copyright (C) 2018-2023 The lai authors
Permission is hereby granted, free of charge, to any person obtaining a copy
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Micro LZMA decoder and limlz
Limine's BIOS stage 1 decompressor (stage1/decompressor.asm) decodes limlz,
an LZMA-based format, and is a modified version of the Micro LZMA decoder for
x86 (static) by Ilya Kurdyukov, from
https://github.com/ilyakurdyukov/micro-lzmadec. It is built into the BIOS boot
sector images, and so into the limine tool. The modifications are covered by
the first notice below, and the original decoder by the second, whose license
follows it.
limlz: Copyright (C) 2026 Kamila Szewczyk <k@iczelia.net>
limine: Copyright (C) 2019-2026 Mintsuki and contributors.
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Copyright (c) 2022, Ilya Kurdyukov
All rights reserved.
Micro LZMA decoder for x86 (static)
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Code taken from the OSDev Wiki is part of
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