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wdenk05706fd2002-09-28 17:48:27 +00001/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +02002 * (C) Copyright 2000-2010
wdenk05706fd2002-09-28 17:48:27 +00003 * 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>
Wolfgang Denkea882ba2010-06-20 23:33:59 +02007 *
wdenk05706fd2002-09-28 17:48:27 +00008 * 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>
Wolfgang Denkea882ba2010-06-20 23:33:59 +020031#include <search.h>
32#include <errno.h>
wdenk05706fd2002-09-28 17:48:27 +000033#include <malloc.h>
34
Wolfgang Denkd87080b2006-03-31 18:32:53 +020035DECLARE_GLOBAL_DATA_PTR;
36
wdenk05706fd2002-09-28 17:48:27 +000037extern env_t *env_ptr;
38
39extern void env_relocate_spec (void);
40extern uchar env_get_char_spec(int);
41
42static uchar env_get_char_init (int index);
wdenk05706fd2002-09-28 17:48:27 +000043
44/************************************************************************
45 * Default settings to be used when no valid environment is found
46 */
47#define XMK_STR(x) #x
48#define MK_STR(x) XMK_STR(x)
49
Mike Frysinger147c7162011-04-23 23:43:21 +000050const uchar default_environment[] = {
wdenk05706fd2002-09-28 17:48:27 +000051#ifdef CONFIG_BOOTARGS
52 "bootargs=" CONFIG_BOOTARGS "\0"
53#endif
54#ifdef CONFIG_BOOTCOMMAND
55 "bootcmd=" CONFIG_BOOTCOMMAND "\0"
56#endif
57#ifdef CONFIG_RAMBOOTCOMMAND
58 "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
59#endif
60#ifdef CONFIG_NFSBOOTCOMMAND
61 "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
62#endif
63#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
64 "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
65#endif
66#if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
67 "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
68#endif
69#ifdef CONFIG_LOADS_ECHO
70 "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0"
71#endif
72#ifdef CONFIG_ETHADDR
73 "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
74#endif
75#ifdef CONFIG_ETH1ADDR
76 "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0"
77#endif
78#ifdef CONFIG_ETH2ADDR
79 "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0"
80#endif
wdenk69459792004-05-29 16:53:29 +000081#ifdef CONFIG_ETH3ADDR
82 "eth3addr=" MK_STR(CONFIG_ETH3ADDR) "\0"
83#endif
richardretanubunc68a05f2008-09-29 18:28:23 -040084#ifdef CONFIG_ETH4ADDR
85 "eth4addr=" MK_STR(CONFIG_ETH4ADDR) "\0"
86#endif
87#ifdef CONFIG_ETH5ADDR
88 "eth5addr=" MK_STR(CONFIG_ETH5ADDR) "\0"
89#endif
wdenk05706fd2002-09-28 17:48:27 +000090#ifdef CONFIG_IPADDR
91 "ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
92#endif
93#ifdef CONFIG_SERVERIP
94 "serverip=" MK_STR(CONFIG_SERVERIP) "\0"
95#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020096#ifdef CONFIG_SYS_AUTOLOAD
97 "autoload=" CONFIG_SYS_AUTOLOAD "\0"
wdenk05706fd2002-09-28 17:48:27 +000098#endif
99#ifdef CONFIG_PREBOOT
100 "preboot=" CONFIG_PREBOOT "\0"
101#endif
102#ifdef CONFIG_ROOTPATH
Joe Hershberger8b3637c2011-10-13 13:03:47 +0000103 "rootpath=" CONFIG_ROOTPATH "\0"
wdenk05706fd2002-09-28 17:48:27 +0000104#endif
105#ifdef CONFIG_GATEWAYIP
106 "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0"
107#endif
108#ifdef CONFIG_NETMASK
109 "netmask=" MK_STR(CONFIG_NETMASK) "\0"
110#endif
111#ifdef CONFIG_HOSTNAME
112 "hostname=" MK_STR(CONFIG_HOSTNAME) "\0"
113#endif
114#ifdef CONFIG_BOOTFILE
Joe Hershbergerb3f44c22011-10-13 13:03:48 +0000115 "bootfile=" CONFIG_BOOTFILE "\0"
wdenk05706fd2002-09-28 17:48:27 +0000116#endif
117#ifdef CONFIG_LOADADDR
118 "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0"
119#endif
120#ifdef CONFIG_CLOCKS_IN_MHZ
121 "clocks_in_mhz=1\0"
122#endif
stroesead10dd92003-02-14 11:21:23 +0000123#if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
124 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0"
125#endif
wdenk05706fd2002-09-28 17:48:27 +0000126#ifdef CONFIG_EXTRA_ENV_SETTINGS
127 CONFIG_EXTRA_ENV_SETTINGS
128#endif
129 "\0"
130};
131
Mike Frysinger2eb15732010-12-08 06:26:04 -0500132struct hsearch_data env_htab;
133
wdenk05706fd2002-09-28 17:48:27 +0000134static uchar env_get_char_init (int index)
135{
wdenk05706fd2002-09-28 17:48:27 +0000136 uchar c;
137
138 /* if crc was bad, use the default environment */
139 if (gd->env_valid)
wdenk05706fd2002-09-28 17:48:27 +0000140 c = env_get_char_spec(index);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200141 else
wdenk05706fd2002-09-28 17:48:27 +0000142 c = default_environment[index];
wdenk05706fd2002-09-28 17:48:27 +0000143
144 return (c);
145}
146
147uchar env_get_char_memory (int index)
148{
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200149 return *env_get_addr(index);
wdenk05706fd2002-09-28 17:48:27 +0000150}
151
Joakim Tjernlundb5026112008-07-06 12:30:09 +0200152uchar env_get_char (int index)
153{
154 uchar c;
155
156 /* if relocated to RAM */
157 if (gd->flags & GD_FLG_RELOC)
158 c = env_get_char_memory(index);
159 else
160 c = env_get_char_init(index);
161
162 return (c);
163}
164
Mike Frysinger147c7162011-04-23 23:43:21 +0000165const uchar *env_get_addr (int index)
wdenk05706fd2002-09-28 17:48:27 +0000166{
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200167 if (gd->env_valid)
168 return (uchar *)(gd->env_addr + index);
169 else
170 return &default_environment[index];
wdenk05706fd2002-09-28 17:48:27 +0000171}
172
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200173void set_default_env(const char *s)
Harald Welte5bb12db2008-07-07 15:40:39 +0800174{
175 if (sizeof(default_environment) > ENV_SIZE) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200176 puts("*** Error - default environment is too large\n\n");
Harald Welte5bb12db2008-07-07 15:40:39 +0800177 return;
178 }
179
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200180 if (s) {
181 if (*s == '!') {
182 printf("*** Warning - %s, "
183 "using default environment\n\n",
184 s+1);
185 } else {
186 puts(s);
187 }
188 } else {
189 puts("Using default environment\n\n");
190 }
191
Mike Frysinger2eb15732010-12-08 06:26:04 -0500192 if (himport_r(&env_htab, (char *)default_environment,
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200193 sizeof(default_environment), '\0', 0) == 0) {
194 error("Environment import failed: errno = %d\n", errno);
195 }
196 gd->flags |= GD_FLG_ENV_READY;
197}
198
199/*
200 * Check if CRC is valid and (if yes) import the environment.
201 * Note that "buf" may or may not be aligned.
202 */
203int env_import(const char *buf, int check)
204{
205 env_t *ep = (env_t *)buf;
206
207 if (check) {
208 uint32_t crc;
209
210 memcpy(&crc, &ep->crc, sizeof(crc));
211
212 if (crc32(0, ep->data, ENV_SIZE) != crc) {
213 set_default_env("!bad CRC");
214 return 0;
215 }
216 }
217
Mike Frysinger2eb15732010-12-08 06:26:04 -0500218 if (himport_r(&env_htab, (char *)ep->data, ENV_SIZE, '\0', 0)) {
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200219 gd->flags |= GD_FLG_ENV_READY;
220 return 1;
221 }
222
223 error("Cannot import environment: errno = %d\n", errno);
224
225 set_default_env("!import failed");
226
227 return 0;
Harald Welte5bb12db2008-07-07 15:40:39 +0800228}
229
wdenk05706fd2002-09-28 17:48:27 +0000230void env_relocate (void)
231{
Wolfgang Denk2e5167c2010-10-28 20:00:11 +0200232#if defined(CONFIG_NEEDS_MANUAL_RELOC)
Heiko Schocher60f7da12010-10-05 14:17:00 +0200233 extern void env_reloc(void);
234
235 env_reloc();
236#endif
wdenk05706fd2002-09-28 17:48:27 +0000237 if (gd->env_valid == 0) {
Wolfgang Denk0fe247b2010-07-05 22:46:33 +0200238#if defined(CONFIG_ENV_IS_NOWHERE) /* Environment not changable */
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200239 set_default_env(NULL);
wdenk05706fd2002-09-28 17:48:27 +0000240#else
Heiko Schocherfad63402007-07-13 09:54:17 +0200241 show_boot_progress (-60);
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200242 set_default_env("!bad CRC");
Lei Wend2590792010-10-10 12:36:40 +0800243#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +0200244 } else {
wdenk05706fd2002-09-28 17:48:27 +0000245 env_relocate_spec ();
246 }
wdenk05706fd2002-09-28 17:48:27 +0000247}
wdenk04a85b32004-04-15 18:22:41 +0000248
Mike Frysinger560d4242010-12-17 16:51:59 -0500249#ifdef CONFIG_AUTO_COMPLETE
wdenk04a85b32004-04-15 18:22:41 +0000250int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf)
251{
Mike Frysinger560d4242010-12-17 16:51:59 -0500252 ENTRY *match;
253 int found, idx;
wdenk04a85b32004-04-15 18:22:41 +0000254
Mike Frysinger560d4242010-12-17 16:51:59 -0500255 idx = 0;
wdenk04a85b32004-04-15 18:22:41 +0000256 found = 0;
257 cmdv[0] = NULL;
258
Mike Frysinger560d4242010-12-17 16:51:59 -0500259 while ((idx = hmatch_r(var, idx, &match, &env_htab))) {
260 int vallen = strlen(match->key) + 1;
wdenk04a85b32004-04-15 18:22:41 +0000261
Mike Frysinger560d4242010-12-17 16:51:59 -0500262 if (found >= maxv - 2 || bufsz < vallen)
wdenk04a85b32004-04-15 18:22:41 +0000263 break;
Mike Frysinger560d4242010-12-17 16:51:59 -0500264
wdenk04a85b32004-04-15 18:22:41 +0000265 cmdv[found++] = buf;
Mike Frysinger560d4242010-12-17 16:51:59 -0500266 memcpy(buf, match->key, vallen);
267 buf += vallen;
268 bufsz -= vallen;
wdenk04a85b32004-04-15 18:22:41 +0000269 }
270
Mike Frysinger560d4242010-12-17 16:51:59 -0500271 qsort(cmdv, found, sizeof(cmdv[0]), strcmp_compar);
272
273 if (idx)
274 cmdv[found++] = "...";
wdenk04a85b32004-04-15 18:22:41 +0000275 cmdv[found] = NULL;
276 return found;
277}
278#endif