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,
31 #define __ASSEMBLY__ /* Dirty trick to get only #defines */
33 #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
37 #if defined(CONFIG_ENV_IS_IN_FLASH)
38 # ifndef CONFIG_ENV_ADDR
39 # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
41 # ifndef CONFIG_ENV_OFFSET
42 # define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
44 # if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND)
45 # define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND)
47 # ifndef CONFIG_ENV_SIZE
48 # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
50 # if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND)
51 # define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE
53 # if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
54 # define CONFIG_SYS_REDUNDAND_ENVIRONMENT 1
56 #endif /* CONFIG_ENV_IS_IN_FLASH */
58 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
59 # define ENV_HEADER_SIZE (sizeof(uint32_t) + 1)
61 # define ENV_HEADER_SIZE (sizeof(uint32_t))
64 #define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
67 extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int);
69 extern unsigned int env_size;
70 extern unsigned char environment;
72 int main (int argc, char **argv)
74 unsigned char pad = 0x00;
76 unsigned char *envptr = &environment,
77 *dataptr = envptr + ENV_HEADER_SIZE;
78 unsigned int datasize = ENV_SIZE;
81 if (argv[1] && !strncmp(argv[1], "--binary", 8)) {
83 if (argv[1][8] == '=')
84 sscanf(argv[1] + 9, "%i", &ipad);
89 /* find the end of env */
90 for (eoe = 0; eoe < datasize - 1; ++eoe)
91 if (!dataptr[eoe] && !dataptr[eoe+1]) {
95 if (eoe < datasize - 1)
96 memset(dataptr + eoe, pad, datasize - eoe);
99 crc = crc32 (0, dataptr, datasize);
101 /* Check if verbose mode is activated passing a parameter to the program */
103 if (!strncmp(argv[1], "--binary", 8)) {
104 int le = (argc > 2 ? !strcmp(argv[2], "le") : 1);
105 size_t i, start, end, step;
108 end = ENV_HEADER_SIZE;
111 start = ENV_HEADER_SIZE - 1;
115 for (i = start; i != end; i += step)
116 printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8));
117 fwrite(dataptr, 1, datasize, stdout);
119 printf("CRC32 from offset %08X to %08X of environment = %08X\n",
120 (unsigned int) (dataptr - envptr),
121 (unsigned int) (dataptr - envptr) + datasize,
125 printf ("0x%08X\n", crc);