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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 | ||
24 | #include <errno.h> | |
25 | #include <stdio.h> | |
26 | #include <stdint.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <unistd.h> | |
30 | ||
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. */ | |
35 | #include <config.h> | |
36 | #undef __ASSEMBLY__ | |
37 | ||
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) | |
41 | # endif | |
42 | # ifndef CONFIG_ENV_OFFSET | |
43 | # define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE) | |
44 | # endif | |
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) | |
47 | # endif | |
48 | # ifndef CONFIG_ENV_SIZE | |
49 | # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE | |
50 | # endif | |
51 | # if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND) | |
52 | # define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE | |
53 | # endif | |
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 | |
57 | # endif | |
58 | # if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND) | |
59 | # define CONFIG_SYS_REDUNDAND_ENVIRONMENT 1 | |
60 | # endif | |
61 | #endif /* CONFIG_ENV_IS_IN_FLASH */ | |
62 | ||
63 | #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT | |
64 | # define ENV_HEADER_SIZE (sizeof(uint32_t) + 1) | |
65 | #else | |
66 | # define ENV_HEADER_SIZE (sizeof(uint32_t)) | |
67 | #endif | |
68 | ||
69 | #define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE) | |
70 | ||
71 | ||
72 | extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int); | |
73 | ||
74 | #ifdef ENV_IS_EMBEDDED | |
75 | extern unsigned int env_size; | |
76 | extern unsigned char environment; | |
77 | #endif /* ENV_IS_EMBEDDED */ | |
78 | ||
79 | int main (int argc, char **argv) | |
80 | { | |
81 | #ifdef ENV_IS_EMBEDDED | |
82 | unsigned char pad = 0x00; | |
83 | uint32_t crc; | |
84 | unsigned char *envptr = &environment, | |
85 | *dataptr = envptr + ENV_HEADER_SIZE; | |
86 | unsigned int datasize = ENV_SIZE; | |
87 | unsigned int eoe; | |
88 | ||
89 | if (argv[1] && !strncmp(argv[1], "--binary", 8)) { | |
90 | int ipad = 0xff; | |
91 | if (argv[1][8] == '=') | |
92 | sscanf(argv[1] + 9, "%i", &ipad); | |
93 | pad = ipad; | |
94 | } | |
95 | ||
96 | if (pad) { | |
97 | /* find the end of env */ | |
98 | for (eoe = 0; eoe < datasize - 1; ++eoe) | |
99 | if (!dataptr[eoe] && !dataptr[eoe+1]) { | |
100 | eoe += 2; | |
101 | break; | |
102 | } | |
103 | if (eoe < datasize - 1) | |
104 | memset(dataptr + eoe, pad, datasize - eoe); | |
105 | } | |
106 | ||
107 | crc = crc32 (0, dataptr, datasize); | |
108 | ||
109 | /* Check if verbose mode is activated passing a parameter to the program */ | |
110 | if (argc > 1) { | |
111 | if (!strncmp(argv[1], "--binary", 8)) { | |
112 | int le = (argc > 2 ? !strcmp(argv[2], "le") : 1); | |
113 | size_t i, start, end, step; | |
114 | if (le) { | |
115 | start = 0; | |
116 | end = ENV_HEADER_SIZE; | |
117 | step = 1; | |
118 | } else { | |
119 | start = ENV_HEADER_SIZE - 1; | |
120 | end = -1; | |
121 | step = -1; | |
122 | } | |
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)); | |
127 | } else { | |
128 | printf("CRC32 from offset %08X to %08X of environment = %08X\n", | |
129 | (unsigned int) (dataptr - envptr), | |
130 | (unsigned int) (dataptr - envptr) + datasize, | |
131 | crc); | |
132 | } | |
133 | } else { | |
134 | printf ("0x%08X\n", crc); | |
135 | } | |
136 | #else | |
137 | printf ("0\n"); | |
138 | #endif | |
139 | return EXIT_SUCCESS; | |
140 | } |