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git.ipfire.org Git - people/ms/u-boot.git/blob - tools/envcrc.c
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,
32 #define __ASSEMBLY__ /* Dirty trick to get only #defines */
34 #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
38 #if defined(CONFIG_ENV_IS_IN_FLASH)
39 # ifndef CONFIG_ENV_ADDR
40 # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
42 # ifndef CONFIG_ENV_OFFSET
43 # define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
45 # if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND)
46 # define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND)
48 # ifndef CONFIG_ENV_SIZE
49 # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
51 # if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND)
52 # define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE
54 # if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
55 ((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
56 # define ENV_IS_EMBEDDED 1
58 # if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
59 # define CONFIG_SYS_REDUNDAND_ENVIRONMENT 1
61 #endif /* CONFIG_ENV_IS_IN_FLASH */
63 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
64 # define ENV_HEADER_SIZE (sizeof(uint32_t) + 1)
66 # define ENV_HEADER_SIZE (sizeof(uint32_t))
69 #define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
72 extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int);
74 #ifdef ENV_IS_EMBEDDED
75 extern unsigned int env_size
;
76 extern unsigned char environment
;
77 #endif /* ENV_IS_EMBEDDED */
79 int main (int argc
, char **argv
)
81 #ifdef ENV_IS_EMBEDDED
82 unsigned char pad
= 0x00;
84 unsigned char *envptr
= &environment
,
85 *dataptr
= envptr
+ ENV_HEADER_SIZE
;
86 unsigned int datasize
= ENV_SIZE
;
89 if (argv
[1] && !strncmp(argv
[1], "--binary", 8)) {
91 if (argv
[1][8] == '=')
92 sscanf(argv
[1] + 9, "%i", &ipad
);
97 /* find the end of env */
98 for (eoe
= 0; eoe
< datasize
- 1; ++eoe
)
99 if (!dataptr
[eoe
] && !dataptr
[eoe
+1]) {
103 if (eoe
< datasize
- 1)
104 memset(dataptr
+ eoe
, pad
, datasize
- eoe
);
107 crc
= crc32 (0, dataptr
, datasize
);
109 /* Check if verbose mode is activated passing a parameter to the program */
111 if (!strncmp(argv
[1], "--binary", 8)) {
112 int le
= (argc
> 2 ? !strcmp(argv
[2], "le") : 1);
113 size_t i
, start
, end
, step
;
116 end
= ENV_HEADER_SIZE
;
119 start
= ENV_HEADER_SIZE
- 1;
123 for (i
= start
; i
!= end
; i
+= step
)
124 printf("%c", (crc
& (0xFF << (i
* 8))) >> (i
* 8));
125 if (fwrite(dataptr
, 1, datasize
, stdout
) != datasize
)
126 fprintf(stderr
, "fwrite() failed: %s\n", strerror(errno
));
128 printf("CRC32 from offset %08X to %08X of environment = %08X\n",
129 (unsigned int) (dataptr
- envptr
),
130 (unsigned int) (dataptr
- envptr
) + datasize
,
134 printf ("0x%08X\n", crc
);