cregit-Linux how code gets into the kernel

Release 4.14 arch/sh/boot/compressed/misc.c

// SPDX-License-Identifier: GPL-2.0
/*
 * arch/sh/boot/compressed/misc.c
 *
 * This is a collection of several routines from gzip-1.0.3
 * adapted for Linux.
 *
 * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
 *
 * Adapted for SH by Stuart Menefy, Aug 1999
 *
 * Modified to use standard LinuxSH BIOS by Greg Banks 7Jul2000
 */

#include <linux/uaccess.h>
#include <asm/addrspace.h>
#include <asm/page.h>

/*
 * gzip declarations
 */


#define STATIC static


#undef memset

#undef memcpy

#define memzero(s, n)     memset ((s), 0, (n))

/* cache.c */

#define CACHE_ENABLE      0

#define CACHE_DISABLE     1
int cache_control(unsigned int command);

extern char input_data[];
extern int input_len;

static unsigned char *output;

static void error(char *m);

int puts(const char *);

extern int _text;		/* Defined in vmlinux.lds.S */
extern int _end;

static unsigned long free_mem_ptr;

static unsigned long free_mem_end_ptr;

#ifdef CONFIG_HAVE_KERNEL_BZIP2

#define HEAP_SIZE	0x400000
#else

#define HEAP_SIZE	0x10000
#endif

#ifdef CONFIG_KERNEL_GZIP
#include "../../../../lib/decompress_inflate.c"
#endif

#ifdef CONFIG_KERNEL_BZIP2
#include "../../../../lib/decompress_bunzip2.c"
#endif

#ifdef CONFIG_KERNEL_LZMA
#include "../../../../lib/decompress_unlzma.c"
#endif

#ifdef CONFIG_KERNEL_XZ
#include "../../../../lib/decompress_unxz.c"
#endif

#ifdef CONFIG_KERNEL_LZO
#include "../../../../lib/decompress_unlzo.c"
#endif


int puts(const char *s) { /* This should be updated to use the sh-sci routines */ return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1071.43%150.00%
Andrew Morton428.57%150.00%
Total14100.00%2100.00%


void* memset(void* s, int c, size_t n) { int i; char *ss = (char*)s; for (i=0;i<n;i++) ss[i] = c; return s; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)52100.00%1100.00%
Total52100.00%1100.00%


void* memcpy(void* __dest, __const void* __src, size_t __n) { int i; char *d = (char *)__dest, *s = (char *)__src; for (i=0;i<__n;i++) d[i] = s[i]; return __dest; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)66100.00%1100.00%
Total66100.00%1100.00%


static void error(char *x) { puts("\n\n"); puts(x); puts("\n\n -- System halted"); while(1); /* Halt */ }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)31100.00%1100.00%
Total31100.00%1100.00%

#ifdef CONFIG_SUPERH64 #define stackalign 8 #else #define stackalign 4 #endif #define STACK_SIZE (4096) long __attribute__ ((aligned(stackalign))) user_stack[STACK_SIZE]; long *stack_start = &user_stack[STACK_SIZE];
void decompress_kernel(void) { unsigned long output_addr; #ifdef CONFIG_SUPERH64 output_addr = (CONFIG_MEMORY_START + 0x2000); #else output_addr = __pa((unsigned long)&_text+PAGE_SIZE); #if defined(CONFIG_29BIT) output_addr |= P2SEG; #endif #endif output = (unsigned char *)output_addr; free_mem_ptr = (unsigned long)&_end; free_mem_end_ptr = free_mem_ptr + HEAP_SIZE; puts("Uncompressing Linux... "); cache_control(CACHE_ENABLE); __decompress(input_data, input_len, NULL, NULL, output, 0, NULL, error); cache_control(CACHE_DISABLE); puts("Ok, booting the kernel.\n"); }

Contributors

PersonTokensPropCommitsCommitProp
Paul Mundt5648.70%440.00%
Linus Torvalds (pre-git)4236.52%110.00%
Stuart Menefy65.22%110.00%
Nobuhiro Iwamatsu54.35%110.00%
Yinghai Lu32.61%110.00%
Yoshinori Sato21.74%110.00%
Matt Fleming10.87%110.00%
Total115100.00%10100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)30163.24%211.76%
Paul Mundt14730.88%741.18%
Stuart Menefy61.26%15.88%
Andrew Morton61.26%15.88%
Yoshinori Sato51.05%15.88%
Nobuhiro Iwamatsu51.05%15.88%
Yinghai Lu30.63%15.88%
Matt Fleming10.21%15.88%
Greg Kroah-Hartman10.21%15.88%
Linus Torvalds10.21%15.88%
Total476100.00%17100.00%
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