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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2005-04-16 16:20:36 -06:00
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/*
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* linux/arch/m32r/boot/setup.S -- A setup code.
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*
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2006-01-06 01:18:44 -07:00
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* Copyright (C) 2001-2005 Hiroyuki Kondo, Hirokazu Takata,
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* Hitoshi Yamamoto, Hayato Fujiwara
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2005-04-16 16:20:36 -06:00
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*
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*/
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#include <linux/linkage.h>
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#include <asm/segment.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/assembler.h>
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#include <asm/mmu_context.h>
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#include <asm/m32r.h>
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/*
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* References to members of the boot_cpu_data structure.
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*/
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#define CPU_PARAMS boot_cpu_data
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#define M32R_MCICAR 0xfffffff0
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#define M32R_MCDCAR 0xfffffff4
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#define M32R_MCCR 0xfffffffc
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#define M32R_BSCR0 0xffffffd2
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;BSEL
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#define BSEL0CR0 0x00ef5000
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#define BSEL0CR1 0x00ef5004
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#define BSEL1CR0 0x00ef5100
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#define BSEL1CR1 0x00ef5104
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#define BSEL0CR0_VAL 0x00000000
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#define BSEL0CR1_VAL 0x01200100
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#define BSEL1CR0_VAL 0x01018000
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#define BSEL1CR1_VAL 0x00200001
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;SDRAMC
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#define SDRAMC_SDRF0 0x00ef6000
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#define SDRAMC_SDRF1 0x00ef6004
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#define SDRAMC_SDIR0 0x00ef6008
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#define SDRAMC_SDIR1 0x00ef600c
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#define SDRAMC_SD0ADR 0x00ef6020
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#define SDRAMC_SD0ER 0x00ef6024
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#define SDRAMC_SD0TR 0x00ef6028
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#define SDRAMC_SD0MOD 0x00ef602c
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#define SDRAMC_SD1ADR 0x00ef6040
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#define SDRAMC_SD1ER 0x00ef6044
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#define SDRAMC_SD1TR 0x00ef6048
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#define SDRAMC_SD1MOD 0x00ef604c
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#define SDRAM0 0x18000000
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#define SDRAM1 0x1c000000
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/*------------------------------------------------------------------------
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* start up
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*/
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/*------------------------------------------------------------------------
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* Kernel entry
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*/
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.section .boot, "ax"
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ENTRY(boot)
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/* Set cache mode */
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#if defined(CONFIG_CHIP_XNUX2)
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ldi r0, #-2 ;LDIMM (r0, M32R_MCCR)
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ldi r1, #0x0101 ; cache on (with invalidation)
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; ldi r1, #0x00 ; cache off
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sth r1, @r0
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#elif defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_VDEC2) \
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|| defined(CONFIG_CHIP_OPSP)
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ldi r0, #-4 ;LDIMM (r0, M32R_MCCR)
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ldi r1, #0x73 ; cache on (with invalidation)
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; ldi r1, #0x00 ; cache off
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st r1, @r0
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#elif defined(CONFIG_CHIP_M32102)
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ldi r0, #-4 ;LDIMM (r0, M32R_MCCR)
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ldi r1, #0x101 ; cache on (with invalidation)
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; ldi r1, #0x00 ; cache off
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st r1, @r0
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2006-01-06 01:18:41 -07:00
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#elif defined(CONFIG_CHIP_M32104)
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2006-01-06 01:18:44 -07:00
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ldi r0, #-96 ; DNCR0
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seth r1, #0x0060 ; from 0x00600000
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or3 r1, r1, #0x0005 ; size 2MB
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st r1, @r0
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seth r1, #0x0100 ; from 0x01000000
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or3 r1, r1, #0x0003 ; size 16MB
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st r1, @+r0
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seth r1, #0x0200 ; from 0x02000000
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or3 r1, r1, #0x0002 ; size 32MB
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st r1, @+r0
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2006-01-06 01:18:41 -07:00
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ldi r0, #-4 ;LDIMM (r0, M32R_MCCR)
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ldi r1, #0x703 ; cache on (with invalidation)
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st r1, @r0
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2005-04-16 16:20:36 -06:00
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#else
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#error unknown chip configuration
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#endif
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#ifdef CONFIG_SMP
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;; if not BSP (CPU#0) goto AP_loop
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seth r5, #shigh(M32R_CPUID_PORTL)
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ld r5, @(low(M32R_CPUID_PORTL), r5)
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bnez r5, AP_loop
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#if !defined(CONFIG_PLAT_USRV)
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;; boot AP
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ld24 r5, #0xeff2f8 ; IPICR7
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ldi r6, #0x2 ; IPI to CPU1
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st r6, @r5
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#endif
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#endif
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/*
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* Now, Jump to stext
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* if with MMU, TLB on.
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* if with no MMU, only jump.
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*/
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.global eit_vector
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mmu_on:
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LDIMM (r13, stext)
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#ifdef CONFIG_MMU
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bl init_tlb
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LDIMM (r2, eit_vector) ; set EVB(cr5)
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mvtc r2, cr5
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seth r0, #high(MMU_REG_BASE) ; Set MMU_REG_BASE higher
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or3 r0, r0, #low(MMU_REG_BASE) ; Set MMU_REG_BASE lower
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ldi r1, #0x01
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st r1, @(MATM_offset,r0) ; Set MATM (T bit ON)
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ld r0, @(MATM_offset,r0) ; Check
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#else
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2006-01-06 01:18:41 -07:00
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#if defined(CONFIG_CHIP_M32700)
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2005-04-16 16:20:36 -06:00
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seth r0,#high(M32R_MCDCAR)
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or3 r0,r0,#low(M32R_MCDCAR)
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ld24 r1,#0x8080
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st r1,@r0
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2006-01-06 01:18:41 -07:00
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#elif defined(CONFIG_CHIP_M32104)
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LDIMM (r2, eit_vector) ; set EVB(cr5)
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mvtc r2, cr5
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#endif
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2005-04-16 16:20:36 -06:00
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#endif /* CONFIG_MMU */
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jmp r13
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nop
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nop
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#ifdef CONFIG_SMP
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/*
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* AP wait loop
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*/
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ENTRY(AP_loop)
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;; disable interrupt
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clrpsw #0x40
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;; reset EVB
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LDIMM (r4, _AP_RE)
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seth r5, #high(__PAGE_OFFSET)
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or3 r5, r5, #low(__PAGE_OFFSET)
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not r5, r5
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and r4, r5
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mvtc r4, cr5
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;; disable maskable interrupt
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seth r4, #high(M32R_ICU_IMASK_PORTL)
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or3 r4, r4, #low(M32R_ICU_IMASK_PORTL)
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ldi r5, #0
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st r5, @r4
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ld r5, @r4
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;; enable only IPI
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setpsw #0x40
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;; LOOOOOOOOOOOOOOP!!!
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.fillinsn
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2:
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nop
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nop
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bra 2b
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nop
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nop
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#ifdef CONFIG_CHIP_M32700_TS1
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.global dcache_dummy
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.balign 16, 0
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dcache_dummy:
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.byte 16
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#endif /* CONFIG_CHIP_M32700_TS1 */
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#endif /* CONFIG_SMP */
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.end
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