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kernel_optimize_test/arch/m32r/kernel/setup.c
Greg Kroah-Hartman b24413180f 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>
2017-11-02 11:10:55 +01:00

425 lines
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// SPDX-License-Identifier: GPL-2.0
/*
* linux/arch/m32r/kernel/setup.c
*
* Setup routines for Renesas M32R
*
* Copyright (c) 2001, 2002 Hiroyuki Kondo, Hirokazu Takata,
* Hitoshi Yamamoto
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/stddef.h>
#include <linux/fs.h>
#include <linux/sched/mm.h>
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <linux/console.h>
#include <linux/initrd.h>
#include <linux/major.h>
#include <linux/root_dev.h>
#include <linux/seq_file.h>
#include <linux/timex.h>
#include <linux/screen_info.h>
#include <linux/cpu.h>
#include <linux/nodemask.h>
#include <linux/pfn.h>
#include <asm/processor.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/mmu_context.h>
#include <asm/m32r.h>
#include <asm/setup.h>
#include <asm/sections.h>
#ifdef CONFIG_MMU
extern void init_mmu(void);
#endif
extern char _end[];
/*
* Machine setup..
*/
struct cpuinfo_m32r boot_cpu_data;
#ifdef CONFIG_BLK_DEV_RAM
extern int rd_doload; /* 1 = load ramdisk, 0 = don't load */
extern int rd_prompt; /* 1 = prompt for ramdisk, 0 = don't prompt */
extern int rd_image_start; /* starting block # of image */
#endif
#if defined(CONFIG_VGA_CONSOLE)
struct screen_info screen_info = {
.orig_video_lines = 25,
.orig_video_cols = 80,
.orig_video_mode = 0,
.orig_video_ega_bx = 0,
.orig_video_isVGA = 1,
.orig_video_points = 8
};
#endif
extern int root_mountflags;
static char __initdata command_line[COMMAND_LINE_SIZE];
static struct resource data_resource = {
.name = "Kernel data",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource code_resource = {
.name = "Kernel code",
.start = 0,
.end = 0,
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
unsigned long memory_start;
EXPORT_SYMBOL(memory_start);
unsigned long memory_end;
EXPORT_SYMBOL(memory_end);
void __init setup_arch(char **);
int get_cpuinfo(char *);
static __inline__ void parse_mem_cmdline(char ** cmdline_p)
{
char c = ' ';
char *to = command_line;
char *from = COMMAND_LINE;
int len = 0;
int usermem = 0;
/* Save unparsed command line copy for /proc/cmdline */
memcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
memory_start = (unsigned long)CONFIG_MEMORY_START+PAGE_OFFSET;
memory_end = memory_start+(unsigned long)CONFIG_MEMORY_SIZE;
for ( ; ; ) {
if (c == ' ' && !memcmp(from, "mem=", 4)) {
if (to != command_line)
to--;
{
unsigned long mem_size;
usermem = 1;
mem_size = memparse(from+4, &from);
memory_end = memory_start + mem_size;
}
}
c = *(from++);
if (!c)
break;
if (COMMAND_LINE_SIZE <= ++len)
break;
*(to++) = c;
}
*to = '\0';
*cmdline_p = command_line;
if (usermem)
printk(KERN_INFO "user-defined physical RAM map:\n");
}
#ifndef CONFIG_DISCONTIGMEM
static unsigned long __init setup_memory(void)
{
unsigned long start_pfn, max_low_pfn, bootmap_size;
start_pfn = PFN_UP( __pa(_end) );
max_low_pfn = PFN_DOWN( __pa(memory_end) );
/*
* Initialize the boot-time allocator (with low memory only):
*/
bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
CONFIG_MEMORY_START>>PAGE_SHIFT, max_low_pfn);
/*
* Register fully available low RAM pages with the bootmem allocator.
*/
{
unsigned long curr_pfn;
unsigned long last_pfn;
unsigned long pages;
/*
* We are rounding up the start address of usable memory:
*/
curr_pfn = PFN_UP(__pa(memory_start));
/*
* ... and at the end of the usable range downwards:
*/
last_pfn = PFN_DOWN(__pa(memory_end));
if (last_pfn > max_low_pfn)
last_pfn = max_low_pfn;
pages = last_pfn - curr_pfn;
free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
}
/*
* Reserve the kernel text and
* Reserve the bootmem bitmap. We do this in two steps (first step
* was init_bootmem()), because this catches the (definitely buggy)
* case of us accidentally initializing the bootmem allocator with
* an invalid RAM area.
*/
reserve_bootmem(CONFIG_MEMORY_START + PAGE_SIZE,
(PFN_PHYS(start_pfn) + bootmap_size + PAGE_SIZE - 1)
- CONFIG_MEMORY_START,
BOOTMEM_DEFAULT);
/*
* reserve physical page 0 - it's a special BIOS page on many boxes,
* enabling clean reboots, SMP operation, laptop functions.
*/
reserve_bootmem(CONFIG_MEMORY_START, PAGE_SIZE, BOOTMEM_DEFAULT);
/*
* reserve memory hole
*/
#ifdef CONFIG_MEMHOLE
reserve_bootmem(CONFIG_MEMHOLE_START, CONFIG_MEMHOLE_SIZE,
BOOTMEM_DEFAULT);
#endif
#ifdef CONFIG_BLK_DEV_INITRD
if (LOADER_TYPE && INITRD_START) {
if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
reserve_bootmem(INITRD_START, INITRD_SIZE,
BOOTMEM_DEFAULT);
initrd_start = INITRD_START + PAGE_OFFSET;
initrd_end = initrd_start + INITRD_SIZE;
printk("initrd:start[%08lx],size[%08lx]\n",
initrd_start, INITRD_SIZE);
} else {
printk("initrd extends beyond end of memory "
"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
INITRD_START + INITRD_SIZE,
max_low_pfn << PAGE_SHIFT);
initrd_start = 0;
}
}
#endif
return max_low_pfn;
}
#else /* CONFIG_DISCONTIGMEM */
extern unsigned long setup_memory(void);
#endif /* CONFIG_DISCONTIGMEM */
void __init setup_arch(char **cmdline_p)
{
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
boot_cpu_data.cpu_clock = M32R_CPUCLK;
boot_cpu_data.bus_clock = M32R_BUSCLK;
boot_cpu_data.timer_divide = M32R_TIMER_DIVIDE;
#ifdef CONFIG_BLK_DEV_RAM
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
#endif
if (!MOUNT_ROOT_RDONLY)
root_mountflags &= ~MS_RDONLY;
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
conswitchp = &vga_con;
#elif defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
#endif
#ifdef CONFIG_DISCONTIGMEM
nodes_clear(node_online_map);
node_set_online(0);
node_set_online(1);
#endif /* CONFIG_DISCONTIGMEM */
init_mm.start_code = (unsigned long) _text;
init_mm.end_code = (unsigned long) _etext;
init_mm.end_data = (unsigned long) _edata;
init_mm.brk = (unsigned long) _end;
code_resource.start = virt_to_phys(_text);
code_resource.end = virt_to_phys(_etext)-1;
data_resource.start = virt_to_phys(_etext);
data_resource.end = virt_to_phys(_edata)-1;
parse_mem_cmdline(cmdline_p);
setup_memory();
paging_init();
}
static struct cpu cpu_devices[NR_CPUS];
static int __init topology_init(void)
{
int i;
for_each_present_cpu(i)
register_cpu(&cpu_devices[i], i);
return 0;
}
subsys_initcall(topology_init);
#ifdef CONFIG_PROC_FS
/*
* Get CPU information for use by the procfs.
*/
static int show_cpuinfo(struct seq_file *m, void *v)
{
struct cpuinfo_m32r *c = v;
unsigned long cpu = c - cpu_data;
#ifdef CONFIG_SMP
if (!cpu_online(cpu))
return 0;
#endif /* CONFIG_SMP */
seq_printf(m, "processor\t: %ld\n", cpu);
#if defined(CONFIG_CHIP_VDEC2)
seq_printf(m, "cpu family\t: VDEC2\n"
"cache size\t: Unknown\n");
#elif defined(CONFIG_CHIP_M32700)
seq_printf(m,"cpu family\t: M32700\n"
"cache size\t: I-8KB/D-8KB\n");
#elif defined(CONFIG_CHIP_M32102)
seq_printf(m,"cpu family\t: M32102\n"
"cache size\t: I-8KB\n");
#elif defined(CONFIG_CHIP_OPSP)
seq_printf(m,"cpu family\t: OPSP\n"
"cache size\t: I-8KB/D-8KB\n");
#elif defined(CONFIG_CHIP_MP)
seq_printf(m, "cpu family\t: M32R-MP\n"
"cache size\t: I-xxKB/D-xxKB\n");
#elif defined(CONFIG_CHIP_M32104)
seq_printf(m,"cpu family\t: M32104\n"
"cache size\t: I-8KB/D-8KB\n");
#else
seq_printf(m, "cpu family\t: Unknown\n");
#endif
seq_printf(m, "bogomips\t: %lu.%02lu\n",
c->loops_per_jiffy/(500000/HZ),
(c->loops_per_jiffy/(5000/HZ)) % 100);
#if defined(CONFIG_PLAT_MAPPI)
seq_printf(m, "Machine\t\t: Mappi Evaluation board\n");
#elif defined(CONFIG_PLAT_MAPPI2)
seq_printf(m, "Machine\t\t: Mappi-II Evaluation board\n");
#elif defined(CONFIG_PLAT_MAPPI3)
seq_printf(m, "Machine\t\t: Mappi-III Evaluation board\n");
#elif defined(CONFIG_PLAT_M32700UT)
seq_printf(m, "Machine\t\t: M32700UT Evaluation board\n");
#elif defined(CONFIG_PLAT_OPSPUT)
seq_printf(m, "Machine\t\t: OPSPUT Evaluation board\n");
#elif defined(CONFIG_PLAT_USRV)
seq_printf(m, "Machine\t\t: uServer\n");
#elif defined(CONFIG_PLAT_OAKS32R)
seq_printf(m, "Machine\t\t: OAKS32R\n");
#elif defined(CONFIG_PLAT_M32104UT)
seq_printf(m, "Machine\t\t: M3T-M32104UT uT Engine board\n");
#else
seq_printf(m, "Machine\t\t: Unknown\n");
#endif
#define PRINT_CLOCK(name, value) \
seq_printf(m, name " clock\t: %d.%02dMHz\n", \
((value) / 1000000), ((value) % 1000000)/10000)
PRINT_CLOCK("CPU", (int)c->cpu_clock);
PRINT_CLOCK("Bus", (int)c->bus_clock);
seq_printf(m, "\n");
return 0;
}
static void *c_start(struct seq_file *m, loff_t *pos)
{
return *pos < NR_CPUS ? cpu_data + *pos : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
++*pos;
return c_start(m, pos);
}
static void c_stop(struct seq_file *m, void *v)
{
}
const struct seq_operations cpuinfo_op = {
.start = c_start,
.next = c_next,
.stop = c_stop,
.show = show_cpuinfo,
};
#endif /* CONFIG_PROC_FS */
unsigned long cpu_initialized __initdata = 0;
/*
* cpu_init() initializes state that is per-CPU. Some data is already
* initialized (naturally) in the bootstrap process.
* We reload them nevertheless, this function acts as a
* 'CPU state barrier', nothing should get across.
*/
#if defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_XNUX2) \
|| defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_M32102) \
|| defined(CONFIG_CHIP_OPSP) || defined(CONFIG_CHIP_M32104)
void __init cpu_init (void)
{
int cpu_id = smp_processor_id();
if (test_and_set_bit(cpu_id, &cpu_initialized)) {
printk(KERN_WARNING "CPU#%d already initialized!\n", cpu_id);
for ( ; ; )
local_irq_enable();
}
printk(KERN_INFO "Initializing CPU#%d\n", cpu_id);
/* Set up and load the per-CPU TSS and LDT */
mmgrab(&init_mm);
current->active_mm = &init_mm;
if (current->mm)
BUG();
/* Force FPU initialization */
current_thread_info()->status = 0;
clear_used_math();
#ifdef CONFIG_MMU
/* Set up MMU */
init_mmu();
#endif
/* Set up ICUIMASK */
outl(0x00070000, M32R_ICU_IMASK_PORTL); /* imask=111 */
}
#endif /* defined(CONFIG_CHIP_VDEC2) ... */
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