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 14:07:57 +00:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2014-08-17 16:33:38 +00:00
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#ifndef SPI_BCM53XX_H
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#define SPI_BCM53XX_H
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#define B53SPI_BSPI_REVISION_ID 0x000
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#define B53SPI_BSPI_SCRATCH 0x004
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#define B53SPI_BSPI_MAST_N_BOOT_CTRL 0x008
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#define B53SPI_BSPI_BUSY_STATUS 0x00c
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#define B53SPI_BSPI_INTR_STATUS 0x010
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#define B53SPI_BSPI_B0_STATUS 0x014
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#define B53SPI_BSPI_B0_CTRL 0x018
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#define B53SPI_BSPI_B1_STATUS 0x01c
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#define B53SPI_BSPI_B1_CTRL 0x020
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#define B53SPI_BSPI_STRAP_OVERRIDE_CTRL 0x024
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#define B53SPI_BSPI_FLEX_MODE_ENABLE 0x028
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#define B53SPI_BSPI_BITS_PER_CYCLE 0x02c
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#define B53SPI_BSPI_BITS_PER_PHASE 0x030
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#define B53SPI_BSPI_CMD_AND_MODE_BYTE 0x034
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#define B53SPI_BSPI_BSPI_FLASH_UPPER_ADDR_BYTE 0x038
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#define B53SPI_BSPI_BSPI_XOR_VALUE 0x03c
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#define B53SPI_BSPI_BSPI_XOR_ENABLE 0x040
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#define B53SPI_BSPI_BSPI_PIO_MODE_ENABLE 0x044
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#define B53SPI_BSPI_BSPI_PIO_IODIR 0x048
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#define B53SPI_BSPI_BSPI_PIO_DATA 0x04c
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/* RAF */
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#define B53SPI_RAF_START_ADDR 0x100
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#define B53SPI_RAF_NUM_WORDS 0x104
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#define B53SPI_RAF_CTRL 0x108
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#define B53SPI_RAF_FULLNESS 0x10c
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#define B53SPI_RAF_WATERMARK 0x110
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#define B53SPI_RAF_STATUS 0x114
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#define B53SPI_RAF_READ_DATA 0x118
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#define B53SPI_RAF_WORD_CNT 0x11c
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#define B53SPI_RAF_CURR_ADDR 0x120
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/* MSPI */
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#define B53SPI_MSPI_SPCR0_LSB 0x200
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#define B53SPI_MSPI_SPCR0_MSB 0x204
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#define B53SPI_MSPI_SPCR1_LSB 0x208
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#define B53SPI_MSPI_SPCR1_MSB 0x20c
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#define B53SPI_MSPI_NEWQP 0x210
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#define B53SPI_MSPI_ENDQP 0x214
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#define B53SPI_MSPI_SPCR2 0x218
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#define B53SPI_MSPI_SPCR2_SPE 0x00000040
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#define B53SPI_MSPI_SPCR2_CONT_AFTER_CMD 0x00000080
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#define B53SPI_MSPI_MSPI_STATUS 0x220
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#define B53SPI_MSPI_MSPI_STATUS_SPIF 0x00000001
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#define B53SPI_MSPI_CPTQP 0x224
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#define B53SPI_MSPI_TXRAM 0x240 /* 32 registers, up to 0x2b8 */
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#define B53SPI_MSPI_RXRAM 0x2c0 /* 32 registers, up to 0x33c */
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#define B53SPI_MSPI_CDRAM 0x340 /* 16 registers, up to 0x37c */
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#define B53SPI_CDRAM_PCS_PCS0 0x00000001
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#define B53SPI_CDRAM_PCS_PCS1 0x00000002
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#define B53SPI_CDRAM_PCS_PCS2 0x00000004
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#define B53SPI_CDRAM_PCS_PCS3 0x00000008
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#define B53SPI_CDRAM_PCS_DISABLE_ALL 0x0000000f
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#define B53SPI_CDRAM_PCS_DSCK 0x00000010
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#define B53SPI_CDRAM_BITSE 0x00000040
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#define B53SPI_CDRAM_CONT 0x00000080
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#define B53SPI_MSPI_WRITE_LOCK 0x380
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#define B53SPI_MSPI_DISABLE_FLUSH_GEN 0x384
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/* Interrupt */
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#define B53SPI_INTR_RAF_LR_FULLNESS_REACHED 0x3a0
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#define B53SPI_INTR_RAF_LR_TRUNCATED 0x3a4
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#define B53SPI_INTR_RAF_LR_IMPATIENT 0x3a8
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#define B53SPI_INTR_RAF_LR_SESSION_DONE 0x3ac
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#define B53SPI_INTR_RAF_LR_OVERREAD 0x3b0
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#define B53SPI_INTR_MSPI_DONE 0x3b4
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#define B53SPI_INTR_MSPI_HALT_SET_TRANSACTION_DONE 0x3b8
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#endif /* SPI_BCM53XX_H */
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