blob: 5f13a63933cdebee5e683e91aff4c61d6273bdb2 [file] [log] [blame]
wdenkfe57bb12002-09-18 13:23:15 +00001/*
2 * (C) Copyright 2001
3 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24#include <stdio.h>
25#include <stdlib.h>
26#include <unistd.h>
27
28#define __ASSEMBLY__ /* Dirty trick to get only #defines */
29#include <config.h>
30#undef __ASSEMBLY__
31
32#if defined(CFG_ENV_IS_IN_FLASH)
33# ifndef CFG_ENV_ADDR
34# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
35# endif
36# ifndef CFG_ENV_OFFSET
37# define CFG_ENV_OFFSET (CFG_ENV_ADDR - CFG_FLASH_BASE)
38# endif
wdenk43d96162003-03-06 00:02:04 +000039# if !defined(CFG_ENV_ADDR_REDUND) && defined(CFG_ENV_OFFSET_REDUND)
40# define CFG_ENV_ADDR_REDUND (CFG_FLASH_BASE + CFG_ENV_OFFSET_REDUND)
41# endif
wdenkfe57bb12002-09-18 13:23:15 +000042# ifndef CFG_ENV_SIZE
43# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
44# endif
wdenk43d96162003-03-06 00:02:04 +000045# if defined(CFG_ENV_ADDR_REDUND) && !defined(CFG_ENV_SIZE_REDUND)
46# define CFG_ENV_SIZE_REDUND CFG_ENV_SIZE
47# endif
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
51# endif
52# if defined(CFG_ENV_ADDR_REDUND) || defined(CFG_ENV_OFFSET_REDUND)
53# define CFG_REDUNDAND_ENVIRONMENT 1
wdenkfe57bb12002-09-18 13:23:15 +000054# endif
55#endif /* CFG_ENV_IS_IN_FLASH */
56
wdenk43d96162003-03-06 00:02:04 +000057#ifdef CFG_REDUNDAND_ENVIRONMENT
58# define ENV_HEADER_SIZE (sizeof(unsigned long) + 1)
59#else
60# define ENV_HEADER_SIZE (sizeof(unsigned long))
61#endif
62
63#define ENV_SIZE (CFG_ENV_SIZE - ENV_HEADER_SIZE)
64
65
wdenkfe57bb12002-09-18 13:23:15 +000066extern unsigned long crc32 (unsigned long, const unsigned char *, unsigned int);
67
68#ifdef ENV_IS_EMBEDDED
69extern unsigned int env_size;
70extern unsigned char environment;
71#endif /* ENV_IS_EMBEDDED */
72
73int main (int argc, char **argv)
74{
75#ifdef ENV_IS_EMBEDDED
76 int crc ;
77 unsigned char *envptr = &environment,
wdenk43d96162003-03-06 00:02:04 +000078 *dataptr = envptr + ENV_HEADER_SIZE;
79 unsigned int datasize = ENV_SIZE;
wdenkfe57bb12002-09-18 13:23:15 +000080
81 crc = crc32(0, dataptr, datasize) ;
82
83 /* Check if verbose mode is activated passing a parameter to the program */
84 if (argc > 1) {
85 printf("CRC32 from offset %08X to %08X of environment = %08X\n",
86 (unsigned int)(dataptr - envptr),
87 (unsigned int)(dataptr - envptr) + datasize,
88 crc);
89 } else {
90 printf("0x%08X\n", crc);
91 }
92#else
93 printf("0\n");
94#endif
95 return EXIT_SUCCESS;
96}