License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 08:07:57 -06:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2013-11-30 15:51:22 -07:00
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/*
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* This header provides constants for MPC512x clock specs in DT bindings.
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*/
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#ifndef _DT_BINDINGS_CLOCK_MPC512x_CLOCK_H
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#define _DT_BINDINGS_CLOCK_MPC512x_CLOCK_H
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#define MPC512x_CLK_DUMMY 0
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#define MPC512x_CLK_REF 1
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#define MPC512x_CLK_SYS 2
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#define MPC512x_CLK_DIU 3
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#define MPC512x_CLK_VIU 4
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#define MPC512x_CLK_CSB 5
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#define MPC512x_CLK_E300 6
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#define MPC512x_CLK_IPS 7
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#define MPC512x_CLK_FEC 8
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#define MPC512x_CLK_SATA 9
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#define MPC512x_CLK_PATA 10
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#define MPC512x_CLK_NFC 11
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#define MPC512x_CLK_LPC 12
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#define MPC512x_CLK_MBX_BUS 13
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#define MPC512x_CLK_MBX 14
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#define MPC512x_CLK_MBX_3D 15
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#define MPC512x_CLK_AXE 16
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#define MPC512x_CLK_USB1 17
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#define MPC512x_CLK_USB2 18
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#define MPC512x_CLK_I2C 19
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#define MPC512x_CLK_MSCAN0_MCLK 20
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#define MPC512x_CLK_MSCAN1_MCLK 21
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#define MPC512x_CLK_MSCAN2_MCLK 22
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#define MPC512x_CLK_MSCAN3_MCLK 23
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#define MPC512x_CLK_BDLC 24
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#define MPC512x_CLK_SDHC 25
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#define MPC512x_CLK_PCI 26
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#define MPC512x_CLK_PSC_MCLK_IN 27
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#define MPC512x_CLK_SPDIF_TX 28
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#define MPC512x_CLK_SPDIF_RX 29
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#define MPC512x_CLK_SPDIF_MCLK 30
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#define MPC512x_CLK_SPDIF 31
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#define MPC512x_CLK_AC97 32
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#define MPC512x_CLK_PSC0_MCLK 33
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#define MPC512x_CLK_PSC1_MCLK 34
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#define MPC512x_CLK_PSC2_MCLK 35
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#define MPC512x_CLK_PSC3_MCLK 36
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#define MPC512x_CLK_PSC4_MCLK 37
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#define MPC512x_CLK_PSC5_MCLK 38
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#define MPC512x_CLK_PSC6_MCLK 39
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#define MPC512x_CLK_PSC7_MCLK 40
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#define MPC512x_CLK_PSC8_MCLK 41
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#define MPC512x_CLK_PSC9_MCLK 42
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#define MPC512x_CLK_PSC10_MCLK 43
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#define MPC512x_CLK_PSC11_MCLK 44
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#define MPC512x_CLK_PSC_FIFO 45
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#define MPC512x_CLK_PSC0 46
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#define MPC512x_CLK_PSC1 47
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#define MPC512x_CLK_PSC2 48
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#define MPC512x_CLK_PSC3 49
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#define MPC512x_CLK_PSC4 50
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#define MPC512x_CLK_PSC5 51
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#define MPC512x_CLK_PSC6 52
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#define MPC512x_CLK_PSC7 53
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#define MPC512x_CLK_PSC8 54
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#define MPC512x_CLK_PSC9 55
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#define MPC512x_CLK_PSC10 56
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#define MPC512x_CLK_PSC11 57
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powerpc/512x: clk: support MPC5121/5123/5125 SoC variants
improve the common clock support code for MPC512x
- expand the CCM register set declaration with MPC5125 related registers
(which reside in the previously "reserved" area)
- tell the MPC5121, MPC5123, and MPC5125 SoC variants apart, and derive
the availability of components and their clocks from the detected SoC
(MBX, AXE, VIU, SPDIF, PATA, SATA, PCI, second FEC, second SDHC,
number of PSC components, type of NAND flash controller,
interpretation of the CPMF bitfield, PSC/CAN mux0 stage input clocks,
output clocks on SoC pins)
- add backwards compatibility (allow operation against a device tree
which lacks clock related specs) for MPC5125 FECs, too
telling SoC variants apart and adjusting the clock tree's generation
occurs at runtime, a common generic binary supports all of the chips
the MPC5125 approach to the NFC clock (one register with two counters
for the high and low periods of the clock) is not implemented, as there
are no users and there is no common implementation which supports this
kind of clock -- the new implementation would be unused and could not
get verified, so it shall wait until there is demand
Signed-off-by: Gerhard Sittig <gsi@denx.de>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2013-12-10 06:11:36 -07:00
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#define MPC512x_CLK_SDHC2 58
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#define MPC512x_CLK_FEC2 59
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#define MPC512x_CLK_OUT0_CLK 60
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#define MPC512x_CLK_OUT1_CLK 61
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#define MPC512x_CLK_OUT2_CLK 62
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#define MPC512x_CLK_OUT3_CLK 63
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#define MPC512x_CLK_CAN_CLK_IN 64
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2013-11-30 15:51:22 -07:00
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powerpc/512x: clk: support MPC5121/5123/5125 SoC variants
improve the common clock support code for MPC512x
- expand the CCM register set declaration with MPC5125 related registers
(which reside in the previously "reserved" area)
- tell the MPC5121, MPC5123, and MPC5125 SoC variants apart, and derive
the availability of components and their clocks from the detected SoC
(MBX, AXE, VIU, SPDIF, PATA, SATA, PCI, second FEC, second SDHC,
number of PSC components, type of NAND flash controller,
interpretation of the CPMF bitfield, PSC/CAN mux0 stage input clocks,
output clocks on SoC pins)
- add backwards compatibility (allow operation against a device tree
which lacks clock related specs) for MPC5125 FECs, too
telling SoC variants apart and adjusting the clock tree's generation
occurs at runtime, a common generic binary supports all of the chips
the MPC5125 approach to the NFC clock (one register with two counters
for the high and low periods of the clock) is not implemented, as there
are no users and there is no common implementation which supports this
kind of clock -- the new implementation would be unused and could not
get verified, so it shall wait until there is demand
Signed-off-by: Gerhard Sittig <gsi@denx.de>
Acked-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
2013-12-10 06:11:36 -07:00
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#define MPC512x_CLK_LAST_PUBLIC 64
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2013-11-30 15:51:22 -07:00
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#endif
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