3 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
28 #define __ASSEMBLY__ /* Dirty trick to get only #defines */
32 #if defined(CFG_ENV_IS_IN_FLASH)
34 # define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
36 # ifndef CFG_ENV_OFFSET
37 # define CFG_ENV_OFFSET (CFG_ENV_ADDR - CFG_FLASH_BASE)
40 # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
42 # if ((CFG_ENV_ADDR >= CFG_MONITOR_BASE) && \
43 ((CFG_ENV_ADDR+CFG_ENV_SIZE) <= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)))
44 # define ENV_IS_EMBEDDED
46 #endif /* CFG_ENV_IS_IN_FLASH */
48 extern unsigned long crc32 (unsigned long, const unsigned char *, unsigned int);
50 #ifdef ENV_IS_EMBEDDED
51 extern unsigned int env_size;
52 extern unsigned char environment;
53 #endif /* ENV_IS_EMBEDDED */
55 int main (int argc, char **argv)
57 #ifdef ENV_IS_EMBEDDED
59 unsigned char *envptr = &environment,
60 *dataptr = envptr + sizeof(unsigned int) + 1;
61 unsigned int datasize = env_size - (dataptr - envptr) ;
64 crc = crc32(0, dataptr, datasize) ;
66 /* Check if verbose mode is activated passing a parameter to the program */
68 printf("CRC32 from offset %08X to %08X of environment = %08X\n",
69 (unsigned int)(dataptr - envptr),
70 (unsigned int)(dataptr - envptr) + datasize,
73 printf("0x%08X\n", crc);