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wdenk05706fd2002-09-28 17:48:27 +00001/*
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>
wdenk05706fd2002-09-28 17:48:27 +000030#include <linux/stddef.h>
31#include <malloc.h>
32
33#ifdef CONFIG_SHOW_BOOT_PROGRESS
34# include <status_led.h>
35# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
36#else
37# define SHOW_BOOT_PROGRESS(arg)
38#endif
39
wdenkc7de8292002-11-19 11:04:11 +000040#ifdef CONFIG_AMIGAONEG3SE
41 extern void enable_nvram(void);
42 extern void disable_nvram(void);
43#endif
44
wdenk05706fd2002-09-28 17:48:27 +000045#undef DEBUG_ENV
46#ifdef DEBUG_ENV
47#define DEBUGF(fmt,args...) printf(fmt ,##args)
48#else
49#define DEBUGF(fmt,args...)
50#endif
51
52extern env_t *env_ptr;
53
54extern void env_relocate_spec (void);
55extern uchar env_get_char_spec(int);
56
57static uchar env_get_char_init (int index);
58uchar (*env_get_char)(int) = env_get_char_init;
59
60/************************************************************************
61 * Default settings to be used when no valid environment is found
62 */
63#define XMK_STR(x) #x
64#define MK_STR(x) XMK_STR(x)
65
66uchar default_environment[] = {
67#ifdef CONFIG_BOOTARGS
68 "bootargs=" CONFIG_BOOTARGS "\0"
69#endif
70#ifdef CONFIG_BOOTCOMMAND
71 "bootcmd=" CONFIG_BOOTCOMMAND "\0"
72#endif
73#ifdef CONFIG_RAMBOOTCOMMAND
74 "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
75#endif
76#ifdef CONFIG_NFSBOOTCOMMAND
77 "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
78#endif
79#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
80 "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
81#endif
82#if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
83 "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
84#endif
85#ifdef CONFIG_LOADS_ECHO
86 "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0"
87#endif
88#ifdef CONFIG_ETHADDR
89 "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
90#endif
91#ifdef CONFIG_ETH1ADDR
92 "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0"
93#endif
94#ifdef CONFIG_ETH2ADDR
95 "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0"
96#endif
wdenk69459792004-05-29 16:53:29 +000097#ifdef CONFIG_ETH3ADDR
98 "eth3addr=" MK_STR(CONFIG_ETH3ADDR) "\0"
99#endif
wdenk05706fd2002-09-28 17:48:27 +0000100#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
106#ifdef CFG_AUTOLOAD
107 "autoload=" CFG_AUTOLOAD "\0"
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
stroesead10dd92003-02-14 11:21:23 +0000133#if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
134 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0"
135#endif
wdenk05706fd2002-09-28 17:48:27 +0000136#ifdef CONFIG_EXTRA_ENV_SETTINGS
137 CONFIG_EXTRA_ENV_SETTINGS
138#endif
139 "\0"
140};
141
142
143void env_crc_update (void)
144{
145 env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE);
146}
147
148static uchar env_get_char_init (int index)
149{
150 DECLARE_GLOBAL_DATA_PTR;
151 uchar c;
152
153 /* if crc was bad, use the default environment */
154 if (gd->env_valid)
155 {
156 c = env_get_char_spec(index);
157 } else {
158 c = default_environment[index];
159 }
160
161 return (c);
162}
163
wdenk7c7a23b2002-12-07 00:20:59 +0000164#ifdef CONFIG_AMIGAONEG3SE
165uchar env_get_char_memory (int index)
166{
167 DECLARE_GLOBAL_DATA_PTR;
168 uchar retval;
169 enable_nvram();
170 if (gd->env_valid) {
171 retval = ( *((uchar *)(gd->env_addr + index)) );
172 } else {
173 retval = ( default_environment[index] );
174 }
175 disable_nvram();
176 return retval;
177}
178#else
wdenk05706fd2002-09-28 17:48:27 +0000179uchar env_get_char_memory (int index)
180{
181 DECLARE_GLOBAL_DATA_PTR;
182
183 if (gd->env_valid) {
184 return ( *((uchar *)(gd->env_addr + index)) );
185 } else {
186 return ( default_environment[index] );
187 }
188}
wdenk7c7a23b2002-12-07 00:20:59 +0000189#endif
wdenk05706fd2002-09-28 17:48:27 +0000190
191uchar *env_get_addr (int index)
192{
193 DECLARE_GLOBAL_DATA_PTR;
194
195 if (gd->env_valid) {
196 return ( ((uchar *)(gd->env_addr + index)) );
197 } else {
198 return (&default_environment[index]);
199 }
200}
201
202void env_relocate (void)
203{
204 DECLARE_GLOBAL_DATA_PTR;
205
206 DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__,
207 gd->reloc_off);
208
wdenkc7de8292002-11-19 11:04:11 +0000209#ifdef CONFIG_AMIGAONEG3SE
210 enable_nvram();
211#endif
212
wdenk05706fd2002-09-28 17:48:27 +0000213#ifdef ENV_IS_EMBEDDED
214 /*
215 * The environment buffer is embedded with the text segment,
216 * just relocate the environment pointer
217 */
218 env_ptr = (env_t *)((ulong)env_ptr + gd->reloc_off);
219 DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
220#else
221 /*
222 * We must allocate a buffer for the environment
223 */
224 env_ptr = (env_t *)malloc (CFG_ENV_SIZE);
225 DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
226#endif
227
228 /*
229 * After relocation to RAM, we can always use the "memory" functions
230 */
231 env_get_char = env_get_char_memory;
232
233 if (gd->env_valid == 0) {
234#if defined(CONFIG_GTH) || defined(CFG_ENV_IS_NOWHERE) /* Environment not changable */
235 puts ("Using default environment\n\n");
236#else
237 puts ("*** Warning - bad CRC, using default environment\n\n");
238 SHOW_BOOT_PROGRESS (-1);
239#endif
240
241 if (sizeof(default_environment) > ENV_SIZE)
242 {
243 puts ("*** Error - default environment is too large\n\n");
244 return;
245 }
246
247 memset (env_ptr, 0, sizeof(env_t));
248 memcpy (env_ptr->data,
249 default_environment,
250 sizeof(default_environment));
251#ifdef CFG_REDUNDAND_ENVIRONMENT
252 env_ptr->flags = 0xFF;
253#endif
254 env_crc_update ();
255 gd->env_valid = 1;
256 }
257 else {
258 env_relocate_spec ();
259 }
260 gd->env_addr = (ulong)&(env_ptr->data);
wdenkc7de8292002-11-19 11:04:11 +0000261
262#ifdef CONFIG_AMIGAONEG3SE
263 disable_nvram();
264#endif
wdenk05706fd2002-09-28 17:48:27 +0000265}
wdenk04a85b32004-04-15 18:22:41 +0000266
267#ifdef CONFIG_AUTO_COMPLETE
268int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf)
269{
270 int i, nxt, len, vallen, found;
271 const char *lval, *rval;
272
273 found = 0;
274 cmdv[0] = NULL;
275
276 len = strlen(var);
277 /* now iterate over the variables and select those that match */
278 for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
279
280 for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
281 ;
282
283 lval = env_get_addr(i);
284 rval = strchr(lval, '=');
285 if (rval != NULL) {
286 vallen = rval - lval;
287 rval++;
288 } else
289 vallen = strlen(lval);
290
291 if (len > 0 && (vallen < len || memcmp(lval, var, len) != 0))
292 continue;
293
294 if (found >= maxv - 2 || bufsz < vallen + 1) {
295 cmdv[found++] = "...";
296 break;
297 }
298 cmdv[found++] = buf;
299 memcpy(buf, lval, vallen); buf += vallen; bufsz -= vallen;
300 *buf++ = '\0'; bufsz--;
301 }
302
303 cmdv[found] = NULL;
304 return found;
305}
306#endif