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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); | |
05706fdd WD |
53 | |
54 | /************************************************************************ | |
55 | * Default settings to be used when no valid environment is found | |
56 | */ | |
57 | #define XMK_STR(x) #x | |
58 | #define MK_STR(x) XMK_STR(x) | |
59 | ||
60 | uchar default_environment[] = { | |
61 | #ifdef CONFIG_BOOTARGS | |
62 | "bootargs=" CONFIG_BOOTARGS "\0" | |
63 | #endif | |
64 | #ifdef CONFIG_BOOTCOMMAND | |
65 | "bootcmd=" CONFIG_BOOTCOMMAND "\0" | |
66 | #endif | |
67 | #ifdef CONFIG_RAMBOOTCOMMAND | |
68 | "ramboot=" CONFIG_RAMBOOTCOMMAND "\0" | |
69 | #endif | |
70 | #ifdef CONFIG_NFSBOOTCOMMAND | |
71 | "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0" | |
72 | #endif | |
73 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
74 | "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0" | |
75 | #endif | |
76 | #if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0) | |
77 | "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0" | |
78 | #endif | |
79 | #ifdef CONFIG_LOADS_ECHO | |
80 | "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0" | |
81 | #endif | |
82 | #ifdef CONFIG_ETHADDR | |
83 | "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0" | |
84 | #endif | |
85 | #ifdef CONFIG_ETH1ADDR | |
86 | "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0" | |
87 | #endif | |
88 | #ifdef CONFIG_ETH2ADDR | |
89 | "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0" | |
90 | #endif | |
69459791 WD |
91 | #ifdef CONFIG_ETH3ADDR |
92 | "eth3addr=" MK_STR(CONFIG_ETH3ADDR) "\0" | |
93 | #endif | |
c68a05fe | 94 | #ifdef CONFIG_ETH4ADDR |
95 | "eth4addr=" MK_STR(CONFIG_ETH4ADDR) "\0" | |
96 | #endif | |
97 | #ifdef CONFIG_ETH5ADDR | |
98 | "eth5addr=" MK_STR(CONFIG_ETH5ADDR) "\0" | |
99 | #endif | |
05706fdd WD |
100 | #ifdef CONFIG_IPADDR |
101 | "ipaddr=" MK_STR(CONFIG_IPADDR) "\0" | |
102 | #endif | |
103 | #ifdef CONFIG_SERVERIP | |
104 | "serverip=" MK_STR(CONFIG_SERVERIP) "\0" | |
105 | #endif | |
6d0f6bcf JCPV |
106 | #ifdef CONFIG_SYS_AUTOLOAD |
107 | "autoload=" CONFIG_SYS_AUTOLOAD "\0" | |
05706fdd WD |
108 | #endif |
109 | #ifdef CONFIG_PREBOOT | |
110 | "preboot=" CONFIG_PREBOOT "\0" | |
111 | #endif | |
112 | #ifdef CONFIG_ROOTPATH | |
113 | "rootpath=" MK_STR(CONFIG_ROOTPATH) "\0" | |
114 | #endif | |
115 | #ifdef CONFIG_GATEWAYIP | |
116 | "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0" | |
117 | #endif | |
118 | #ifdef CONFIG_NETMASK | |
119 | "netmask=" MK_STR(CONFIG_NETMASK) "\0" | |
120 | #endif | |
121 | #ifdef CONFIG_HOSTNAME | |
122 | "hostname=" MK_STR(CONFIG_HOSTNAME) "\0" | |
123 | #endif | |
124 | #ifdef CONFIG_BOOTFILE | |
125 | "bootfile=" MK_STR(CONFIG_BOOTFILE) "\0" | |
126 | #endif | |
127 | #ifdef CONFIG_LOADADDR | |
128 | "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0" | |
129 | #endif | |
130 | #ifdef CONFIG_CLOCKS_IN_MHZ | |
131 | "clocks_in_mhz=1\0" | |
132 | #endif | |
ad10dd9a SR |
133 | #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0) |
134 | "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0" | |
135 | #endif | |
05706fdd WD |
136 | #ifdef CONFIG_EXTRA_ENV_SETTINGS |
137 | CONFIG_EXTRA_ENV_SETTINGS | |
138 | #endif | |
139 | "\0" | |
140 | }; | |
141 | ||
51bfee19 | 142 | #if defined(CONFIG_ENV_IS_IN_NAND) /* Environment is in Nand Flash */ \ |
0b5099a8 | 143 | || defined(CONFIG_ENV_IS_IN_SPI_FLASH) |
13a5695b WD |
144 | int default_environment_size = sizeof(default_environment); |
145 | #endif | |
05706fdd WD |
146 | |
147 | void env_crc_update (void) | |
148 | { | |
149 | env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE); | |
150 | } | |
151 | ||
152 | static uchar env_get_char_init (int index) | |
153 | { | |
05706fdd WD |
154 | uchar c; |
155 | ||
156 | /* if crc was bad, use the default environment */ | |
157 | if (gd->env_valid) | |
158 | { | |
159 | c = env_get_char_spec(index); | |
160 | } else { | |
161 | c = default_environment[index]; | |
162 | } | |
163 | ||
164 | return (c); | |
165 | } | |
166 | ||
7c7a23bd WD |
167 | #ifdef CONFIG_AMIGAONEG3SE |
168 | uchar env_get_char_memory (int index) | |
169 | { | |
7c7a23bd WD |
170 | uchar retval; |
171 | enable_nvram(); | |
172 | if (gd->env_valid) { | |
173 | retval = ( *((uchar *)(gd->env_addr + index)) ); | |
174 | } else { | |
175 | retval = ( default_environment[index] ); | |
176 | } | |
177 | disable_nvram(); | |
178 | return retval; | |
179 | } | |
180 | #else | |
05706fdd WD |
181 | uchar env_get_char_memory (int index) |
182 | { | |
05706fdd WD |
183 | if (gd->env_valid) { |
184 | return ( *((uchar *)(gd->env_addr + index)) ); | |
185 | } else { | |
186 | return ( default_environment[index] ); | |
187 | } | |
188 | } | |
7c7a23bd | 189 | #endif |
05706fdd | 190 | |
b502611b JT |
191 | uchar env_get_char (int index) |
192 | { | |
193 | uchar c; | |
194 | ||
195 | /* if relocated to RAM */ | |
196 | if (gd->flags & GD_FLG_RELOC) | |
197 | c = env_get_char_memory(index); | |
198 | else | |
199 | c = env_get_char_init(index); | |
200 | ||
201 | return (c); | |
202 | } | |
203 | ||
05706fdd WD |
204 | uchar *env_get_addr (int index) |
205 | { | |
05706fdd WD |
206 | if (gd->env_valid) { |
207 | return ( ((uchar *)(gd->env_addr + index)) ); | |
208 | } else { | |
209 | return (&default_environment[index]); | |
210 | } | |
211 | } | |
212 | ||
5bb12dbd HW |
213 | void set_default_env(void) |
214 | { | |
215 | if (sizeof(default_environment) > ENV_SIZE) { | |
216 | puts ("*** Error - default environment is too large\n\n"); | |
217 | return; | |
218 | } | |
219 | ||
220 | memset(env_ptr, 0, sizeof(env_t)); | |
221 | memcpy(env_ptr->data, default_environment, | |
222 | sizeof(default_environment)); | |
6d0f6bcf | 223 | #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT |
5bb12dbd HW |
224 | env_ptr->flags = 0xFF; |
225 | #endif | |
226 | env_crc_update (); | |
227 | gd->env_valid = 1; | |
228 | } | |
229 | ||
05706fdd WD |
230 | void env_relocate (void) |
231 | { | |
05706fdd WD |
232 | DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__, |
233 | gd->reloc_off); | |
234 | ||
c7de829c WD |
235 | #ifdef CONFIG_AMIGAONEG3SE |
236 | enable_nvram(); | |
237 | #endif | |
238 | ||
05706fdd WD |
239 | #ifdef ENV_IS_EMBEDDED |
240 | /* | |
241 | * The environment buffer is embedded with the text segment, | |
242 | * just relocate the environment pointer | |
243 | */ | |
244 | env_ptr = (env_t *)((ulong)env_ptr + gd->reloc_off); | |
245 | DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__,__LINE__,env_ptr); | |
246 | #else | |
247 | /* | |
248 | * We must allocate a buffer for the environment | |
249 | */ | |
0e8d1586 | 250 | env_ptr = (env_t *)malloc (CONFIG_ENV_SIZE); |
05706fdd WD |
251 | DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr); |
252 | #endif | |
253 | ||
05706fdd | 254 | if (gd->env_valid == 0) { |
93f6d725 | 255 | #if defined(CONFIG_GTH) || defined(CONFIG_ENV_IS_NOWHERE) /* Environment not changable */ |
05706fdd WD |
256 | puts ("Using default environment\n\n"); |
257 | #else | |
258 | puts ("*** Warning - bad CRC, using default environment\n\n"); | |
fad63407 | 259 | show_boot_progress (-60); |
05706fdd | 260 | #endif |
5bb12dbd | 261 | set_default_env(); |
05706fdd WD |
262 | } |
263 | else { | |
264 | env_relocate_spec (); | |
265 | } | |
266 | gd->env_addr = (ulong)&(env_ptr->data); | |
c7de829c WD |
267 | |
268 | #ifdef CONFIG_AMIGAONEG3SE | |
269 | disable_nvram(); | |
270 | #endif | |
05706fdd | 271 | } |
04a85b3b WD |
272 | |
273 | #ifdef CONFIG_AUTO_COMPLETE | |
274 | int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) | |
275 | { | |
276 | int i, nxt, len, vallen, found; | |
277 | const char *lval, *rval; | |
278 | ||
279 | found = 0; | |
280 | cmdv[0] = NULL; | |
281 | ||
282 | len = strlen(var); | |
283 | /* now iterate over the variables and select those that match */ | |
284 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { | |
285 | ||
286 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) | |
287 | ; | |
288 | ||
77ddac94 | 289 | lval = (char *)env_get_addr(i); |
04a85b3b WD |
290 | rval = strchr(lval, '='); |
291 | if (rval != NULL) { | |
292 | vallen = rval - lval; | |
293 | rval++; | |
294 | } else | |
295 | vallen = strlen(lval); | |
296 | ||
297 | if (len > 0 && (vallen < len || memcmp(lval, var, len) != 0)) | |
298 | continue; | |
299 | ||
300 | if (found >= maxv - 2 || bufsz < vallen + 1) { | |
301 | cmdv[found++] = "..."; | |
302 | break; | |
303 | } | |
304 | cmdv[found++] = buf; | |
305 | memcpy(buf, lval, vallen); buf += vallen; bufsz -= vallen; | |
306 | *buf++ = '\0'; bufsz--; | |
307 | } | |
308 | ||
309 | cmdv[found] = NULL; | |
310 | return found; | |
311 | } | |
312 | #endif |