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05706fdd WD |
1 | /* |
2 | * (C) Copyright 2000-2002 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
6 | * Andreas Heppel <aheppel@sysgo.de> | |
7 | ||
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
24 | * MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | #include <common.h> | |
28 | #include <command.h> | |
29 | #include <environment.h> | |
05706fdd WD |
30 | #include <linux/stddef.h> |
31 | #include <malloc.h> | |
32 | ||
d87080b7 WD |
33 | DECLARE_GLOBAL_DATA_PTR; |
34 | ||
c7de829c WD |
35 | #ifdef CONFIG_AMIGAONEG3SE |
36 | extern void enable_nvram(void); | |
37 | extern void disable_nvram(void); | |
38 | #endif | |
39 | ||
05706fdd WD |
40 | #undef DEBUG_ENV |
41 | #ifdef DEBUG_ENV | |
42 | #define DEBUGF(fmt,args...) printf(fmt ,##args) | |
43 | #else | |
44 | #define DEBUGF(fmt,args...) | |
45 | #endif | |
46 | ||
47 | extern env_t *env_ptr; | |
48 | ||
49 | extern void env_relocate_spec (void); | |
50 | extern uchar env_get_char_spec(int); | |
51 | ||
52 | static uchar env_get_char_init (int index); | |
53 | uchar (*env_get_char)(int) = env_get_char_init; | |
54 | ||
55 | /************************************************************************ | |
56 | * Default settings to be used when no valid environment is found | |
57 | */ | |
58 | #define XMK_STR(x) #x | |
59 | #define MK_STR(x) XMK_STR(x) | |
60 | ||
61 | uchar default_environment[] = { | |
62 | #ifdef CONFIG_BOOTARGS | |
63 | "bootargs=" CONFIG_BOOTARGS "\0" | |
64 | #endif | |
65 | #ifdef CONFIG_BOOTCOMMAND | |
66 | "bootcmd=" CONFIG_BOOTCOMMAND "\0" | |
67 | #endif | |
68 | #ifdef CONFIG_RAMBOOTCOMMAND | |
69 | "ramboot=" CONFIG_RAMBOOTCOMMAND "\0" | |
70 | #endif | |
71 | #ifdef CONFIG_NFSBOOTCOMMAND | |
72 | "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0" | |
73 | #endif | |
74 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
75 | "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0" | |
76 | #endif | |
77 | #if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0) | |
78 | "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0" | |
79 | #endif | |
80 | #ifdef CONFIG_LOADS_ECHO | |
81 | "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0" | |
82 | #endif | |
83 | #ifdef CONFIG_ETHADDR | |
84 | "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0" | |
85 | #endif | |
86 | #ifdef CONFIG_ETH1ADDR | |
87 | "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0" | |
88 | #endif | |
89 | #ifdef CONFIG_ETH2ADDR | |
90 | "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0" | |
91 | #endif | |
69459791 WD |
92 | #ifdef CONFIG_ETH3ADDR |
93 | "eth3addr=" MK_STR(CONFIG_ETH3ADDR) "\0" | |
94 | #endif | |
05706fdd WD |
95 | #ifdef CONFIG_IPADDR |
96 | "ipaddr=" MK_STR(CONFIG_IPADDR) "\0" | |
97 | #endif | |
98 | #ifdef CONFIG_SERVERIP | |
99 | "serverip=" MK_STR(CONFIG_SERVERIP) "\0" | |
100 | #endif | |
101 | #ifdef CFG_AUTOLOAD | |
102 | "autoload=" CFG_AUTOLOAD "\0" | |
103 | #endif | |
104 | #ifdef CONFIG_PREBOOT | |
105 | "preboot=" CONFIG_PREBOOT "\0" | |
106 | #endif | |
107 | #ifdef CONFIG_ROOTPATH | |
108 | "rootpath=" MK_STR(CONFIG_ROOTPATH) "\0" | |
109 | #endif | |
110 | #ifdef CONFIG_GATEWAYIP | |
111 | "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0" | |
112 | #endif | |
113 | #ifdef CONFIG_NETMASK | |
114 | "netmask=" MK_STR(CONFIG_NETMASK) "\0" | |
115 | #endif | |
116 | #ifdef CONFIG_HOSTNAME | |
117 | "hostname=" MK_STR(CONFIG_HOSTNAME) "\0" | |
118 | #endif | |
119 | #ifdef CONFIG_BOOTFILE | |
120 | "bootfile=" MK_STR(CONFIG_BOOTFILE) "\0" | |
121 | #endif | |
122 | #ifdef CONFIG_LOADADDR | |
123 | "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0" | |
124 | #endif | |
125 | #ifdef CONFIG_CLOCKS_IN_MHZ | |
126 | "clocks_in_mhz=1\0" | |
127 | #endif | |
ad10dd9a SR |
128 | #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0) |
129 | "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0" | |
130 | #endif | |
05706fdd WD |
131 | #ifdef CONFIG_EXTRA_ENV_SETTINGS |
132 | CONFIG_EXTRA_ENV_SETTINGS | |
133 | #endif | |
134 | "\0" | |
135 | }; | |
136 | ||
13a5695b WD |
137 | #if defined(CFG_ENV_IS_IN_NAND) /* Environment is in Nand Flash */ |
138 | int default_environment_size = sizeof(default_environment); | |
139 | #endif | |
05706fdd WD |
140 | |
141 | void env_crc_update (void) | |
142 | { | |
143 | env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE); | |
144 | } | |
145 | ||
146 | static uchar env_get_char_init (int index) | |
147 | { | |
05706fdd WD |
148 | uchar c; |
149 | ||
150 | /* if crc was bad, use the default environment */ | |
151 | if (gd->env_valid) | |
152 | { | |
153 | c = env_get_char_spec(index); | |
154 | } else { | |
155 | c = default_environment[index]; | |
156 | } | |
157 | ||
158 | return (c); | |
159 | } | |
160 | ||
7c7a23bd WD |
161 | #ifdef CONFIG_AMIGAONEG3SE |
162 | uchar env_get_char_memory (int index) | |
163 | { | |
7c7a23bd WD |
164 | uchar retval; |
165 | enable_nvram(); | |
166 | if (gd->env_valid) { | |
167 | retval = ( *((uchar *)(gd->env_addr + index)) ); | |
168 | } else { | |
169 | retval = ( default_environment[index] ); | |
170 | } | |
171 | disable_nvram(); | |
172 | return retval; | |
173 | } | |
174 | #else | |
05706fdd WD |
175 | uchar env_get_char_memory (int index) |
176 | { | |
05706fdd WD |
177 | if (gd->env_valid) { |
178 | return ( *((uchar *)(gd->env_addr + index)) ); | |
179 | } else { | |
180 | return ( default_environment[index] ); | |
181 | } | |
182 | } | |
7c7a23bd | 183 | #endif |
05706fdd WD |
184 | |
185 | uchar *env_get_addr (int index) | |
186 | { | |
05706fdd WD |
187 | if (gd->env_valid) { |
188 | return ( ((uchar *)(gd->env_addr + index)) ); | |
189 | } else { | |
190 | return (&default_environment[index]); | |
191 | } | |
192 | } | |
193 | ||
194 | void env_relocate (void) | |
195 | { | |
05706fdd WD |
196 | DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__, |
197 | gd->reloc_off); | |
198 | ||
c7de829c WD |
199 | #ifdef CONFIG_AMIGAONEG3SE |
200 | enable_nvram(); | |
201 | #endif | |
202 | ||
05706fdd WD |
203 | #ifdef ENV_IS_EMBEDDED |
204 | /* | |
205 | * The environment buffer is embedded with the text segment, | |
206 | * just relocate the environment pointer | |
207 | */ | |
208 | env_ptr = (env_t *)((ulong)env_ptr + gd->reloc_off); | |
209 | DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__,__LINE__,env_ptr); | |
210 | #else | |
211 | /* | |
212 | * We must allocate a buffer for the environment | |
213 | */ | |
214 | env_ptr = (env_t *)malloc (CFG_ENV_SIZE); | |
215 | DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr); | |
216 | #endif | |
217 | ||
218 | /* | |
219 | * After relocation to RAM, we can always use the "memory" functions | |
220 | */ | |
221 | env_get_char = env_get_char_memory; | |
222 | ||
223 | if (gd->env_valid == 0) { | |
224 | #if defined(CONFIG_GTH) || defined(CFG_ENV_IS_NOWHERE) /* Environment not changable */ | |
225 | puts ("Using default environment\n\n"); | |
226 | #else | |
227 | puts ("*** Warning - bad CRC, using default environment\n\n"); | |
fad63407 | 228 | show_boot_progress (-60); |
05706fdd WD |
229 | #endif |
230 | ||
231 | if (sizeof(default_environment) > ENV_SIZE) | |
232 | { | |
233 | puts ("*** Error - default environment is too large\n\n"); | |
234 | return; | |
235 | } | |
236 | ||
237 | memset (env_ptr, 0, sizeof(env_t)); | |
238 | memcpy (env_ptr->data, | |
239 | default_environment, | |
240 | sizeof(default_environment)); | |
241 | #ifdef CFG_REDUNDAND_ENVIRONMENT | |
242 | env_ptr->flags = 0xFF; | |
243 | #endif | |
244 | env_crc_update (); | |
245 | gd->env_valid = 1; | |
246 | } | |
247 | else { | |
248 | env_relocate_spec (); | |
249 | } | |
250 | gd->env_addr = (ulong)&(env_ptr->data); | |
c7de829c WD |
251 | |
252 | #ifdef CONFIG_AMIGAONEG3SE | |
253 | disable_nvram(); | |
254 | #endif | |
05706fdd | 255 | } |
04a85b3b WD |
256 | |
257 | #ifdef CONFIG_AUTO_COMPLETE | |
258 | int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) | |
259 | { | |
260 | int i, nxt, len, vallen, found; | |
261 | const char *lval, *rval; | |
262 | ||
263 | found = 0; | |
264 | cmdv[0] = NULL; | |
265 | ||
266 | len = strlen(var); | |
267 | /* now iterate over the variables and select those that match */ | |
268 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { | |
269 | ||
270 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) | |
271 | ; | |
272 | ||
77ddac94 | 273 | lval = (char *)env_get_addr(i); |
04a85b3b WD |
274 | rval = strchr(lval, '='); |
275 | if (rval != NULL) { | |
276 | vallen = rval - lval; | |
277 | rval++; | |
278 | } else | |
279 | vallen = strlen(lval); | |
280 | ||
281 | if (len > 0 && (vallen < len || memcmp(lval, var, len) != 0)) | |
282 | continue; | |
283 | ||
284 | if (found >= maxv - 2 || bufsz < vallen + 1) { | |
285 | cmdv[found++] = "..."; | |
286 | break; | |
287 | } | |
288 | cmdv[found++] = buf; | |
289 | memcpy(buf, lval, vallen); buf += vallen; bufsz -= vallen; | |
290 | *buf++ = '\0'; bufsz--; | |
291 | } | |
292 | ||
293 | cmdv[found] = NULL; | |
294 | return found; | |
295 | } | |
296 | #endif |