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wdenk
2002-09-18 13:23:15 +00:00
parent 38a24a612e
commit fe57bb19b0
2 changed files with 216 additions and 0 deletions
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tools/envcrc.c Normal file
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/*
* (C) Copyright 2001
* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define __ASSEMBLY__ /* Dirty trick to get only #defines */
#include <config.h>
#undef __ASSEMBLY__
#if defined(CFG_ENV_IS_IN_FLASH)
# ifndef CFG_ENV_ADDR
# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
# endif
# ifndef CFG_ENV_OFFSET
# define CFG_ENV_OFFSET (CFG_ENV_ADDR - CFG_FLASH_BASE)
# endif
# ifndef CFG_ENV_SIZE
# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
# endif
# if ((CFG_ENV_ADDR >= CFG_MONITOR_BASE) && \
((CFG_ENV_ADDR+CFG_ENV_SIZE) <= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)))
# define ENV_IS_EMBEDDED
# endif
#endif /* CFG_ENV_IS_IN_FLASH */
extern unsigned long crc32 (unsigned long, const unsigned char *, unsigned int);
#ifdef ENV_IS_EMBEDDED
extern unsigned int env_size;
extern unsigned char environment;
#endif /* ENV_IS_EMBEDDED */
int main (int argc, char **argv)
{
#ifdef ENV_IS_EMBEDDED
int crc ;
unsigned char *envptr = &environment,
*dataptr = envptr + sizeof(unsigned int) + 1;
unsigned int datasize = env_size - (dataptr - envptr) ;
crc = crc32(0, dataptr, datasize) ;
/* Check if verbose mode is activated passing a parameter to the program */
if (argc > 1) {
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;
}