Eric Lee / smarc-uboot

Blame view

common/env_ubi.c 4.86 KB
edit raw normal view history
2b74433f3   Joe Hershberger   env: Add support ... 
1
2
3
4
 
  /*
   * (c) Copyright 2012 by National Instruments,
   *        Joe Hershberger <joe.hershberger@ni.com>
   *
3765b3e7b   Wolfgang Denk   Coding Style clea... 
5
 
   * SPDX-License-Identifier:	GPL-2.0+
2b74433f3   Joe Hershberger   env: Add support ... 
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
   */
  
  #include <common.h>
  
  #include <command.h>
  #include <environment.h>
  #include <errno.h>
  #include <malloc.h>
  #include <search.h>
  #include <ubi_uboot.h>
  #undef crc32
  
  char *env_name_spec = "UBI";
  
  env_t *env_ptr;
  
  DECLARE_GLOBAL_DATA_PTR;
  
  int env_init(void)
  {
  	/* use default */
  	gd->env_addr = (ulong)&default_environment[0];
  	gd->env_valid = 1;
  
  	return 0;
  }
  
  #ifdef CONFIG_CMD_SAVEENV
785881f77   Joe Hershberger   env: Add redundan... 
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
 
  #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
  static unsigned char env_flags;
  
  int saveenv(void)
  {
  	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
  	ssize_t	len;
  	char *res;
  
  	res = (char *)&env_new->data;
  	len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
  	if (len < 0) {
  		error("Cannot export environment: errno = %d
  ", errno);
  		return 1;
  	}
  
  	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
  		printf("
  ** Cannot find mtd partition \"%s\"
  ",
  		       CONFIG_ENV_UBI_PART);
  		return 1;
  	}
  
  	env_new->crc = crc32(0, env_new->data, ENV_SIZE);
  	env_new->flags = ++env_flags; /* increase the serial */
  
  	if (gd->env_valid == 1) {
  		puts("Writing to redundant UBI... ");
  		if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND,
  				     (void *)env_new, CONFIG_ENV_SIZE)) {
  			printf("
  ** Unable to write env to %s:%s **
  ",
  			       CONFIG_ENV_UBI_PART,
  			       CONFIG_ENV_UBI_VOLUME_REDUND);
  			return 1;
  		}
  	} else {
  		puts("Writing to UBI... ");
  		if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME,
  				     (void *)env_new, CONFIG_ENV_SIZE)) {
  			printf("
  ** Unable to write env to %s:%s **
  ",
  			       CONFIG_ENV_UBI_PART,
  			       CONFIG_ENV_UBI_VOLUME);
  			return 1;
  		}
  	}
  
  	puts("done
  ");
  
  	gd->env_valid = gd->env_valid == 2 ? 1 : 2;
  
  	return 0;
  }
  #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
2b74433f3   Joe Hershberger   env: Add support ... 
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
 
  int saveenv(void)
  {
  	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
  	ssize_t	len;
  	char *res;
  
  	res = (char *)&env_new->data;
  	len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
  	if (len < 0) {
  		error("Cannot export environment: errno = %d
  ", errno);
  		return 1;
  	}
  
  	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
  		printf("
  ** Cannot find mtd partition \"%s\"
  ",
  		       CONFIG_ENV_UBI_PART);
  		return 1;
  	}
  
  	env_new->crc = crc32(0, env_new->data, ENV_SIZE);
  
  	if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_new,
  			     CONFIG_ENV_SIZE)) {
  		printf("
  ** Unable to write env to %s:%s **
  ",
  		       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
  		return 1;
  	}
  
  	puts("done
  ");
  	return 0;
  }
785881f77   Joe Hershberger   env: Add redundan... 
131
 
  #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
2b74433f3   Joe Hershberger   env: Add support ... 
132
 
  #endif /* CONFIG_CMD_SAVEENV */
785881f77   Joe Hershberger   env: Add redundan... 
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
 
  #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
  void env_relocate_spec(void)
  {
  	ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf, CONFIG_ENV_SIZE);
  	ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf, CONFIG_ENV_SIZE);
  	int crc1_ok = 0, crc2_ok = 0;
  	env_t *ep, *tmp_env1, *tmp_env2;
  
  	tmp_env1 = (env_t *)env1_buf;
  	tmp_env2 = (env_t *)env2_buf;
  
  	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
  		printf("
  ** Cannot find mtd partition \"%s\"
  ",
  		       CONFIG_ENV_UBI_PART);
  		set_default_env(NULL);
  		return;
  	}
  
  	if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1,
  			    CONFIG_ENV_SIZE)) {
  		printf("
  ** Unable to read env from %s:%s **
  ",
  		       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
  	}
  
  	if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND, (void *)tmp_env2,
  			    CONFIG_ENV_SIZE)) {
  		printf("
  ** Unable to read redundant env from %s:%s **
  ",
  		       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND);
  	}
  
  	crc1_ok = crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc;
  	crc2_ok = crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc;
  
  	if (!crc1_ok && !crc2_ok) {
  		set_default_env("!bad CRC");
  		return;
  	} else if (crc1_ok && !crc2_ok) {
  		gd->env_valid = 1;
  	} else if (!crc1_ok && crc2_ok) {
  		gd->env_valid = 2;
  	} else {
  		/* both ok - check serial */
  		if (tmp_env1->flags == 255 && tmp_env2->flags == 0)
  			gd->env_valid = 2;
  		else if (tmp_env2->flags == 255 && tmp_env1->flags == 0)
  			gd->env_valid = 1;
  		else if (tmp_env1->flags > tmp_env2->flags)
  			gd->env_valid = 1;
  		else if (tmp_env2->flags > tmp_env1->flags)
  			gd->env_valid = 2;
  		else /* flags are equal - almost impossible */
  			gd->env_valid = 1;
  	}
  
  	if (gd->env_valid == 1)
  		ep = tmp_env1;
  	else
  		ep = tmp_env2;
  
  	env_flags = ep->flags;
  	env_import((char *)ep, 0);
  }
  #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
2b74433f3   Joe Hershberger   env: Add support ... 
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
 
  void env_relocate_spec(void)
  {
  	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
  
  	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
  		printf("
  ** Cannot find mtd partition \"%s\"
  ",
  		       CONFIG_ENV_UBI_PART);
  		set_default_env(NULL);
  		return;
  	}
  
  	if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)&buf,
  			    CONFIG_ENV_SIZE)) {
  		printf("
  ** Unable to read env from %s:%s **
  ",
  		       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
  		set_default_env(NULL);
  		return;
  	}
  
  	env_import(buf, 1);
  }
785881f77   Joe Hershberger   env: Add redundan... 
227
 
  #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */