]>
Commit | Line | Data |
---|---|---|
75eb82ec K |
1 | /* |
2 | * (C) Copyright 2009 mGine co. | |
3 | * unsik Kim <donari75@gmail.com> | |
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 <common.h> | |
25 | #include <command.h> | |
26 | #include <environment.h> | |
27 | #include <linux/stddef.h> | |
28 | #include <mg_disk.h> | |
29 | ||
30 | /* references to names in env_common.c */ | |
31 | extern uchar default_environment[]; | |
32 | extern int default_environment_size; | |
33 | ||
34 | char * env_name_spec = "MG_DISK"; | |
35 | ||
36 | env_t *env_ptr = 0; | |
37 | ||
38 | DECLARE_GLOBAL_DATA_PTR; | |
39 | ||
40 | uchar env_get_char_spec(int index) | |
41 | { | |
42 | return (*((uchar *) (gd->env_addr + index))); | |
43 | } | |
44 | ||
45 | void env_relocate_spec(void) | |
46 | { | |
47 | unsigned int err; | |
48 | ||
49 | err = mg_disk_init(); | |
50 | if (err) { | |
51 | puts ("*** Warning - mg_disk_init error"); | |
52 | goto OUT; | |
53 | } | |
54 | err = mg_disk_read(CONFIG_ENV_ADDR, (u_char *)env_ptr, CONFIG_ENV_SIZE); | |
55 | if (err) { | |
56 | puts ("*** Warning - mg_disk_read error"); | |
57 | goto OUT; | |
58 | } | |
59 | ||
60 | if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc) { | |
61 | puts ("*** Warning - CRC error"); | |
62 | goto OUT; | |
63 | } | |
64 | ||
65 | return; | |
66 | ||
67 | OUT: | |
68 | printf (", using default environment\n\n"); | |
69 | set_default_env(); | |
70 | } | |
71 | ||
72 | int saveenv(void) | |
73 | { | |
74 | unsigned int err; | |
75 | ||
76 | env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE); | |
77 | err = mg_disk_write(CONFIG_ENV_ADDR, (u_char *)env_ptr, | |
78 | CONFIG_ENV_SIZE); | |
79 | if (err) | |
80 | puts ("*** Warning - mg_disk_write error\n\n"); | |
81 | ||
82 | return err; | |
83 | } | |
84 | ||
85 | int env_init(void) | |
86 | { | |
87 | /* use default */ | |
88 | gd->env_addr = (ulong) & default_environment[0]; | |
89 | gd->env_valid = 1; | |
90 | ||
91 | return 0; | |
92 | } |