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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>
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* arch/arm/mach-ixp4xx/include/mach/platform.h
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*
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* Constants and functions that are useful to IXP4xx platform-specific code
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* and device drivers.
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*
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* Copyright (C) 2004 MontaVista Software, Inc.
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*/
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#ifndef __ASM_ARCH_HARDWARE_H__
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#error "Do not include this directly, instead #include <mach/hardware.h>"
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#endif
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#ifndef __ASSEMBLY__
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#include <linux/reboot.h>
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#include <asm/types.h>
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#ifndef __ARMEB__
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#define REG_OFFSET 0
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#else
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#define REG_OFFSET 3
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#endif
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/*
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* Expansion bus memory regions
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*/
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#define IXP4XX_EXP_BUS_BASE_PHYS (0x50000000)
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/*
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* The expansion bus on the IXP4xx can be configured for either 16 or
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* 32MB windows and the CS offset for each region changes based on the
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* current configuration. This means that we cannot simply hardcode
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* each offset. ixp4xx_sys_init() looks at the expansion bus configuration
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* as setup by the bootloader to determine our window size.
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*/
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extern unsigned long ixp4xx_exp_bus_size;
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#define IXP4XX_EXP_BUS_BASE(region)\
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(IXP4XX_EXP_BUS_BASE_PHYS + ((region) * ixp4xx_exp_bus_size))
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#define IXP4XX_EXP_BUS_END(region)\
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(IXP4XX_EXP_BUS_BASE(region) + ixp4xx_exp_bus_size - 1)
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/* Those macros can be used to adjust timing and configure
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* other features for each region.
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*/
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#define IXP4XX_EXP_BUS_RECOVERY_T(x) (((x) & 0x0f) << 16)
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#define IXP4XX_EXP_BUS_HOLD_T(x) (((x) & 0x03) << 20)
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#define IXP4XX_EXP_BUS_STROBE_T(x) (((x) & 0x0f) << 22)
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#define IXP4XX_EXP_BUS_SETUP_T(x) (((x) & 0x03) << 26)
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#define IXP4XX_EXP_BUS_ADDR_T(x) (((x) & 0x03) << 28)
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#define IXP4XX_EXP_BUS_SIZE(x) (((x) & 0x0f) << 10)
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#define IXP4XX_EXP_BUS_CYCLES(x) (((x) & 0x03) << 14)
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#define IXP4XX_EXP_BUS_CS_EN (1L << 31)
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#define IXP4XX_EXP_BUS_BYTE_RD16 (1L << 6)
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#define IXP4XX_EXP_BUS_HRDY_POL (1L << 5)
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#define IXP4XX_EXP_BUS_MUX_EN (1L << 4)
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#define IXP4XX_EXP_BUS_SPLT_EN (1L << 3)
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#define IXP4XX_EXP_BUS_WR_EN (1L << 1)
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#define IXP4XX_EXP_BUS_BYTE_EN (1L << 0)
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#define IXP4XX_EXP_BUS_CYCLES_INTEL 0x00
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#define IXP4XX_EXP_BUS_CYCLES_MOTOROLA 0x01
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#define IXP4XX_EXP_BUS_CYCLES_HPI 0x02
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#define IXP4XX_FLASH_WRITABLE (0x2)
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#define IXP4XX_FLASH_DEFAULT (0xbcd23c40)
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#define IXP4XX_FLASH_WRITE (0xbcd23c42)
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/*
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* Clock Speed Definitions.
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*/
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#define IXP4XX_PERIPHERAL_BUS_CLOCK (66) /* 66MHzi APB BUS */
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#define IXP4XX_UART_XTAL 14745600
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/*
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* This structure provide a means for the board setup code
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* to give information to th pata_ixp4xx driver. It is
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* passed as platform_data.
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*/
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struct ixp4xx_pata_data {
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volatile u32 *cs0_cfg;
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volatile u32 *cs1_cfg;
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unsigned long cs0_bits;
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unsigned long cs1_bits;
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void __iomem *cs0;
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void __iomem *cs1;
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};
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#define IXP4XX_ETH_NPEA 0x00
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#define IXP4XX_ETH_NPEB 0x10
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#define IXP4XX_ETH_NPEC 0x20
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/* Information about built-in Ethernet MAC interfaces */
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struct eth_plat_info {
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u8 phy; /* MII PHY ID, 0 - 31 */
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u8 rxq; /* configurable, currently 0 - 31 only */
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u8 txreadyq;
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u8 hwaddr[6];
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};
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/* Information about built-in HSS (synchronous serial) interfaces */
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struct hss_plat_info {
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int (*set_clock)(int port, unsigned int clock_type);
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int (*open)(int port, void *pdev,
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void (*set_carrier_cb)(void *pdev, int carrier));
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void (*close)(int port, void *pdev);
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u8 txreadyq;
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};
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/*
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* Frequency of clock used for primary clocksource
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*/
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extern unsigned long ixp4xx_timer_freq;
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/*
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* Functions used by platform-level setup code
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*/
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extern void ixp4xx_map_io(void);
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extern void ixp4xx_init_early(void);
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extern void ixp4xx_init_irq(void);
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extern void ixp4xx_sys_init(void);
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extern void ixp4xx_timer_init(void);
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extern void ixp4xx_restart(enum reboot_mode, const char *);
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extern void ixp4xx_pci_preinit(void);
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struct pci_sys_data;
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extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
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extern struct pci_ops ixp4xx_ops;
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#endif // __ASSEMBLY__
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