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)
39 # if !defined(CFG_ENV_ADDR_REDUND) && defined(CFG_ENV_OFFSET_REDUND)
40 # define CFG_ENV_ADDR_REDUND (CFG_FLASH_BASE + CFG_ENV_OFFSET_REDUND)
43 # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
45 # if defined(CFG_ENV_ADDR_REDUND) && !defined(CFG_ENV_SIZE_REDUND)
46 # define CFG_ENV_SIZE_REDUND CFG_ENV_SIZE
48 # if (CFG_ENV_ADDR >= CFG_MONITOR_BASE) && \
49 ((CFG_ENV_ADDR + CFG_ENV_SIZE) <= (CFG_MONITOR_BASE + CFG_MONITOR_LEN))
50 # define ENV_IS_EMBEDDED 1
52 # if defined(CFG_ENV_ADDR_REDUND) || defined(CFG_ENV_OFFSET_REDUND)
53 # define CFG_REDUNDAND_ENVIRONMENT 1
55 #endif /* CFG_ENV_IS_IN_FLASH */
57 #ifdef CFG_REDUNDAND_ENVIRONMENT
58 # define ENV_HEADER_SIZE (sizeof(unsigned long) + 1)
60 # define ENV_HEADER_SIZE (sizeof(unsigned long))
63 #define ENV_SIZE (CFG_ENV_SIZE - ENV_HEADER_SIZE)
66 extern unsigned long crc32 (unsigned long, const unsigned char *, unsigned int);
68 #ifdef ENV_IS_EMBEDDED
69 extern unsigned int env_size;
70 extern unsigned char environment;
71 #endif /* ENV_IS_EMBEDDED */
73 int main (int argc, char **argv)
75 #ifdef ENV_IS_EMBEDDED
77 unsigned char *envptr = &environment,
78 *dataptr = envptr + ENV_HEADER_SIZE;
79 unsigned int datasize = ENV_SIZE;
81 crc = crc32(0, dataptr, datasize) ;
83 /* Check if verbose mode is activated passing a parameter to the program */
85 printf("CRC32 from offset %08X to %08X of environment = %08X\n",
86 (unsigned int)(dataptr - envptr),
87 (unsigned int)(dataptr - envptr) + datasize,
90 printf("0x%08X\n", crc);