u-boot/tools/envcrc.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

130 lines
3.4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2001
* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
*/
#include <errno.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/kconfig.h>
#ifndef __ASSEMBLY__
#define __ASSEMBLY__ /* Dirty trick to get only #defines */
#endif
#define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
#include <config.h>
#undef __ASSEMBLY__
#if defined(CONFIG_ENV_IS_IN_FLASH)
# ifndef CONFIG_ENV_ADDR
# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
# endif
# ifndef CONFIG_ENV_OFFSET
# define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
# endif
# if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND)
# define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND)
# endif
# ifndef CONFIG_ENV_SIZE
# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
# endif
# if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND)
# define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE
# endif
# if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
# define ENV_IS_EMBEDDED
# endif
# if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
# define CONFIG_SYS_REDUNDAND_ENVIRONMENT
# endif
#endif /* CONFIG_ENV_IS_IN_FLASH */
#if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC)
# define CONFIG_BUILD_ENVCRC
#endif
#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
# define ENV_HEADER_SIZE (sizeof(uint32_t) + 1)
#else
# define ENV_HEADER_SIZE (sizeof(uint32_t))
#endif
#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
#ifdef CONFIG_BUILD_ENVCRC
# include <environment.h>
extern unsigned int env_size;
extern env_t environment;
#endif /* CONFIG_BUILD_ENVCRC */
extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int);
int main (int argc, char **argv)
{
#ifdef CONFIG_BUILD_ENVCRC
unsigned char pad = 0x00;
uint32_t crc;
unsigned char *envptr = (unsigned char *)&environment,
*dataptr = envptr + ENV_HEADER_SIZE;
unsigned int datasize = ENV_SIZE;
unsigned int eoe;
if (argv[1] && !strncmp(argv[1], "--binary", 8)) {
int ipad = 0xff;
if (argv[1][8] == '=')
sscanf(argv[1] + 9, "%i", &ipad);
pad = ipad;
}
if (pad) {
/* find the end of env */
for (eoe = 0; eoe < datasize - 1; ++eoe)
if (!dataptr[eoe] && !dataptr[eoe+1]) {
eoe += 2;
break;
}
if (eoe < datasize - 1)
memset(dataptr + eoe, pad, datasize - eoe);
}
crc = crc32 (0, dataptr, datasize);
/* Check if verbose mode is activated passing a parameter to the program */
if (argc > 1) {
if (!strncmp(argv[1], "--binary", 8)) {
int le = (argc > 2 ? !strcmp(argv[2], "le") : 1);
size_t i, start, end, step;
if (le) {
start = 0;
end = ENV_HEADER_SIZE;
step = 1;
} else {
start = ENV_HEADER_SIZE - 1;
end = -1;
step = -1;
}
for (i = start; i != end; i += step)
printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8));
if (fwrite(dataptr, 1, datasize, stdout) != datasize)
fprintf(stderr, "fwrite() failed: %s\n", strerror(errno));
} else {
printf("CRC32 from offset %08X to %08X of environment = %08X\n",
(unsigned int) (dataptr - envptr),
(unsigned int) (dataptr - envptr) + datasize,
crc);
}
} else {
printf ("0x%08X\n", crc);
}
#else
printf ("0\n");
#endif
return EXIT_SUCCESS;
}