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fe57bb19 WD |
1 | /* |
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 | ||
f67066b6 | 24 | #include <errno.h> |
fe57bb19 | 25 | #include <stdio.h> |
89cdab78 | 26 | #include <stdint.h> |
fe57bb19 | 27 | #include <stdlib.h> |
837db3d8 | 28 | #include <string.h> |
fe57bb19 WD |
29 | #include <unistd.h> |
30 | ||
dc17fb6d WD |
31 | #ifndef __ASSEMBLY__ |
32 | #define __ASSEMBLY__ /* Dirty trick to get only #defines */ | |
33 | #endif | |
34 | #define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */ | |
fe57bb19 WD |
35 | #include <config.h> |
36 | #undef __ASSEMBLY__ | |
37 | ||
5a1aceb0 | 38 | #if defined(CONFIG_ENV_IS_IN_FLASH) |
0e8d1586 | 39 | # ifndef CONFIG_ENV_ADDR |
6d0f6bcf | 40 | # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) |
fe57bb19 | 41 | # endif |
0e8d1586 | 42 | # ifndef CONFIG_ENV_OFFSET |
6d0f6bcf | 43 | # define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE) |
fe57bb19 | 44 | # endif |
0e8d1586 | 45 | # if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND) |
6d0f6bcf | 46 | # define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND) |
43d9616c | 47 | # endif |
0e8d1586 JCPV |
48 | # ifndef CONFIG_ENV_SIZE |
49 | # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE | |
fe57bb19 | 50 | # endif |
0e8d1586 JCPV |
51 | # if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND) |
52 | # define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE | |
43d9616c | 53 | # endif |
0e8d1586 | 54 | # if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND) |
6d0f6bcf | 55 | # define CONFIG_SYS_REDUNDAND_ENVIRONMENT 1 |
fe57bb19 | 56 | # endif |
5a1aceb0 | 57 | #endif /* CONFIG_ENV_IS_IN_FLASH */ |
fe57bb19 | 58 | |
6d0f6bcf | 59 | #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT |
89cdab78 | 60 | # define ENV_HEADER_SIZE (sizeof(uint32_t) + 1) |
43d9616c | 61 | #else |
89cdab78 | 62 | # define ENV_HEADER_SIZE (sizeof(uint32_t)) |
43d9616c WD |
63 | #endif |
64 | ||
0e8d1586 | 65 | #define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE) |
43d9616c WD |
66 | |
67 | ||
89cdab78 | 68 | extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int); |
fe57bb19 | 69 | |
fe57bb19 WD |
70 | extern unsigned int env_size; |
71 | extern unsigned char environment; | |
fe57bb19 WD |
72 | |
73 | int main (int argc, char **argv) | |
74 | { | |
837db3d8 | 75 | unsigned char pad = 0x00; |
89cdab78 | 76 | uint32_t crc; |
dc17fb6d WD |
77 | unsigned char *envptr = &environment, |
78 | *dataptr = envptr + ENV_HEADER_SIZE; | |
79 | unsigned int datasize = ENV_SIZE; | |
837db3d8 MF |
80 | unsigned int eoe; |
81 | ||
82 | if (argv[1] && !strncmp(argv[1], "--binary", 8)) { | |
83 | int ipad = 0xff; | |
84 | if (argv[1][8] == '=') | |
85 | sscanf(argv[1] + 9, "%i", &ipad); | |
86 | pad = ipad; | |
87 | } | |
88 | ||
89 | if (pad) { | |
90 | /* find the end of env */ | |
91 | for (eoe = 0; eoe < datasize - 1; ++eoe) | |
92 | if (!dataptr[eoe] && !dataptr[eoe+1]) { | |
93 | eoe += 2; | |
94 | break; | |
95 | } | |
96 | if (eoe < datasize - 1) | |
97 | memset(dataptr + eoe, pad, datasize - eoe); | |
98 | } | |
fe57bb19 | 99 | |
dc17fb6d | 100 | crc = crc32 (0, dataptr, datasize); |
fe57bb19 | 101 | |
dc17fb6d WD |
102 | /* Check if verbose mode is activated passing a parameter to the program */ |
103 | if (argc > 1) { | |
837db3d8 MF |
104 | if (!strncmp(argv[1], "--binary", 8)) { |
105 | int le = (argc > 2 ? !strcmp(argv[2], "le") : 1); | |
106 | size_t i, start, end, step; | |
107 | if (le) { | |
108 | start = 0; | |
109 | end = ENV_HEADER_SIZE; | |
110 | step = 1; | |
111 | } else { | |
112 | start = ENV_HEADER_SIZE - 1; | |
113 | end = -1; | |
114 | step = -1; | |
115 | } | |
116 | for (i = start; i != end; i += step) | |
117 | printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8)); | |
f67066b6 MF |
118 | if (fwrite(dataptr, 1, datasize, stdout) != datasize) |
119 | fprintf(stderr, "fwrite() failed: %s\n", strerror(errno)); | |
837db3d8 MF |
120 | } else { |
121 | printf("CRC32 from offset %08X to %08X of environment = %08X\n", | |
122 | (unsigned int) (dataptr - envptr), | |
123 | (unsigned int) (dataptr - envptr) + datasize, | |
124 | crc); | |
125 | } | |
dc17fb6d WD |
126 | } else { |
127 | printf ("0x%08X\n", crc); | |
128 | } | |
6dab6add | 129 | |
dc17fb6d | 130 | return EXIT_SUCCESS; |
fe57bb19 | 131 | } |