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b24413180f
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>
155 lines
3.6 KiB
Plaintext
155 lines
3.6 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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if MACH_LOONGSON64
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choice
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prompt "Machine Type"
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config LEMOTE_FULOONG2E
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bool "Lemote Fuloong(2e) mini-PC"
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select ARCH_SPARSEMEM_ENABLE
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select CEVT_R4K
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select CSRC_R4K
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select SYS_HAS_CPU_LOONGSON2E
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select DMA_NONCOHERENT
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select BOOT_ELF32
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select BOARD_SCACHE
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select HW_HAS_PCI
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select I8259
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select ISA
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select IRQ_MIPS_CPU
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select SYS_SUPPORTS_32BIT_KERNEL
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select SYS_SUPPORTS_64BIT_KERNEL
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select SYS_SUPPORTS_LITTLE_ENDIAN
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select SYS_SUPPORTS_HIGHMEM
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select SYS_HAS_EARLY_PRINTK
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select GENERIC_ISA_DMA_SUPPORT_BROKEN
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select CPU_HAS_WB
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select LOONGSON_MC146818
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help
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Lemote Fuloong(2e) mini-PC board based on the Chinese Loongson-2E CPU and
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an FPGA northbridge
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Lemote Fuloong(2e) mini PC have a VIA686B south bridge.
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config LEMOTE_MACH2F
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bool "Lemote Loongson 2F family machines"
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select ARCH_SPARSEMEM_ENABLE
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select BOARD_SCACHE
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select BOOT_ELF32
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select CEVT_R4K if ! MIPS_EXTERNAL_TIMER
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select CPU_HAS_WB
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select CS5536
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select CSRC_R4K if ! MIPS_EXTERNAL_TIMER
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select DMA_NONCOHERENT
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select GENERIC_ISA_DMA_SUPPORT_BROKEN
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select HAVE_CLK
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select HW_HAS_PCI
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select I8259
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select IRQ_MIPS_CPU
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select ISA
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select SYS_HAS_CPU_LOONGSON2F
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select SYS_HAS_EARLY_PRINTK
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select SYS_SUPPORTS_32BIT_KERNEL
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select SYS_SUPPORTS_64BIT_KERNEL
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select SYS_SUPPORTS_HIGHMEM
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select SYS_SUPPORTS_LITTLE_ENDIAN
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select LOONGSON_MC146818
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help
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Lemote Loongson 2F family machines utilize the 2F revision of
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Loongson processor and the AMD CS5536 south bridge.
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These family machines include fuloong2f mini PC, yeeloong2f notebook,
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LingLoong allinone PC and so forth.
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config LOONGSON_MACH3X
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bool "Generic Loongson 3 family machines"
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select ARCH_SPARSEMEM_ENABLE
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select GENERIC_ISA_DMA_SUPPORT_BROKEN
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select BOOT_ELF32
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select BOARD_SCACHE
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select CSRC_R4K
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select CEVT_R4K
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select CPU_HAS_WB
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select HW_HAS_PCI
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select ISA
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select HT_PCI
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select I8259
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select IRQ_MIPS_CPU
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select NR_CPUS_DEFAULT_4
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select SYS_HAS_CPU_LOONGSON3
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select SYS_HAS_EARLY_PRINTK
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select SYS_SUPPORTS_SMP
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select SYS_SUPPORTS_HOTPLUG_CPU
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select SYS_SUPPORTS_NUMA
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select SYS_SUPPORTS_64BIT_KERNEL
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select SYS_SUPPORTS_HIGHMEM
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select SYS_SUPPORTS_LITTLE_ENDIAN
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select LOONGSON_MC146818
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select ZONE_DMA32
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select LEFI_FIRMWARE_INTERFACE
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select PHYS48_TO_HT40
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help
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Generic Loongson 3 family machines utilize the 3A/3B revision
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of Loongson processor and RS780/SBX00 chipset.
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endchoice
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config CS5536
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bool
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config CS5536_MFGPT
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bool "CS5536 MFGPT Timer"
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depends on CS5536 && !HIGH_RES_TIMERS
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select MIPS_EXTERNAL_TIMER
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help
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This option enables the mfgpt0 timer of AMD CS5536. With this timer
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switched on you can not use high resolution timers.
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If you want to enable the Loongson2 CPUFreq Driver, Please enable
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this option at first, otherwise, You will get wrong system time.
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If unsure, say Yes.
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config RS780_HPET
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bool "RS780/SBX00 HPET Timer"
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depends on LOONGSON_MACH3X
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select MIPS_EXTERNAL_TIMER
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help
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This option enables the hpet timer of AMD RS780/SBX00.
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If you want to enable the Loongson3 CPUFreq Driver, Please enable
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this option at first, otherwise, You will get wrong system time.
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If unsure, say Yes.
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config LOONGSON_UART_BASE
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bool
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default y
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depends on EARLY_PRINTK || SERIAL_8250
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config IOMMU_HELPER
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bool
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config NEED_SG_DMA_LENGTH
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bool
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config SWIOTLB
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bool "Soft IOMMU Support for All-Memory DMA"
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default y
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depends on CPU_LOONGSON3
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select IOMMU_HELPER
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select NEED_SG_DMA_LENGTH
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select NEED_DMA_MAP_STATE
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config PHYS48_TO_HT40
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bool
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default y if CPU_LOONGSON3
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config LOONGSON_MC146818
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bool
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default n
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config LEFI_FIRMWARE_INTERFACE
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bool
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endif # MACH_LOONGSON64
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