2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
6 * Andreas Heppel <aheppel@sysgo.de>
8 * See file CREDITS for list of people who contributed to this
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.
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.
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,
29 #include <environment.h>
30 #include <linux/stddef.h>
33 DECLARE_GLOBAL_DATA_PTR
;
35 #ifdef CONFIG_AMIGAONEG3SE
36 extern void enable_nvram(void);
37 extern void disable_nvram(void);
42 #define DEBUGF(fmt,args...) printf(fmt ,##args)
44 #define DEBUGF(fmt,args...)
47 extern env_t
*env_ptr
;
49 extern void env_relocate_spec (void);
50 extern uchar
env_get_char_spec(int);
52 static uchar
env_get_char_init (int index
);
54 /************************************************************************
55 * Default settings to be used when no valid environment is found
58 #define MK_STR(x) XMK_STR(x)
60 uchar default_environment
[] = {
61 #ifdef CONFIG_BOOTARGS
62 "bootargs=" CONFIG_BOOTARGS
"\0"
64 #ifdef CONFIG_BOOTCOMMAND
65 "bootcmd=" CONFIG_BOOTCOMMAND
"\0"
67 #ifdef CONFIG_RAMBOOTCOMMAND
68 "ramboot=" CONFIG_RAMBOOTCOMMAND
"\0"
70 #ifdef CONFIG_NFSBOOTCOMMAND
71 "nfsboot=" CONFIG_NFSBOOTCOMMAND
"\0"
73 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
74 "bootdelay=" MK_STR(CONFIG_BOOTDELAY
) "\0"
76 #if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
77 "baudrate=" MK_STR(CONFIG_BAUDRATE
) "\0"
79 #ifdef CONFIG_LOADS_ECHO
80 "loads_echo=" MK_STR(CONFIG_LOADS_ECHO
) "\0"
83 "ethaddr=" MK_STR(CONFIG_ETHADDR
) "\0"
85 #ifdef CONFIG_ETH1ADDR
86 "eth1addr=" MK_STR(CONFIG_ETH1ADDR
) "\0"
88 #ifdef CONFIG_ETH2ADDR
89 "eth2addr=" MK_STR(CONFIG_ETH2ADDR
) "\0"
91 #ifdef CONFIG_ETH3ADDR
92 "eth3addr=" MK_STR(CONFIG_ETH3ADDR
) "\0"
94 #ifdef CONFIG_ETH4ADDR
95 "eth4addr=" MK_STR(CONFIG_ETH4ADDR
) "\0"
97 #ifdef CONFIG_ETH5ADDR
98 "eth5addr=" MK_STR(CONFIG_ETH5ADDR
) "\0"
101 "ipaddr=" MK_STR(CONFIG_IPADDR
) "\0"
103 #ifdef CONFIG_SERVERIP
104 "serverip=" MK_STR(CONFIG_SERVERIP
) "\0"
106 #ifdef CONFIG_SYS_AUTOLOAD
107 "autoload=" CONFIG_SYS_AUTOLOAD
"\0"
109 #ifdef CONFIG_PREBOOT
110 "preboot=" CONFIG_PREBOOT
"\0"
112 #ifdef CONFIG_ROOTPATH
113 "rootpath=" MK_STR(CONFIG_ROOTPATH
) "\0"
115 #ifdef CONFIG_GATEWAYIP
116 "gatewayip=" MK_STR(CONFIG_GATEWAYIP
) "\0"
118 #ifdef CONFIG_NETMASK
119 "netmask=" MK_STR(CONFIG_NETMASK
) "\0"
121 #ifdef CONFIG_HOSTNAME
122 "hostname=" MK_STR(CONFIG_HOSTNAME
) "\0"
124 #ifdef CONFIG_BOOTFILE
125 "bootfile=" MK_STR(CONFIG_BOOTFILE
) "\0"
127 #ifdef CONFIG_LOADADDR
128 "loadaddr=" MK_STR(CONFIG_LOADADDR
) "\0"
130 #ifdef CONFIG_CLOCKS_IN_MHZ
133 #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
134 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY
) "\0"
136 #ifdef CONFIG_EXTRA_ENV_SETTINGS
137 CONFIG_EXTRA_ENV_SETTINGS
142 void env_crc_update (void)
144 env_ptr
->crc
= crc32(0, env_ptr
->data
, ENV_SIZE
);
147 static uchar
env_get_char_init (int index
)
151 /* if crc was bad, use the default environment */
154 c
= env_get_char_spec(index
);
156 c
= default_environment
[index
];
162 #ifdef CONFIG_AMIGAONEG3SE
163 uchar
env_get_char_memory (int index
)
168 retval
= ( *((uchar
*)(gd
->env_addr
+ index
)) );
170 retval
= ( default_environment
[index
] );
176 uchar
env_get_char_memory (int index
)
179 return ( *((uchar
*)(gd
->env_addr
+ index
)) );
181 return ( default_environment
[index
] );
186 uchar
env_get_char (int index
)
190 /* if relocated to RAM */
191 if (gd
->flags
& GD_FLG_RELOC
)
192 c
= env_get_char_memory(index
);
194 c
= env_get_char_init(index
);
199 uchar
*env_get_addr (int index
)
202 return ( ((uchar
*)(gd
->env_addr
+ index
)) );
204 return (&default_environment
[index
]);
208 void set_default_env(void)
210 if (sizeof(default_environment
) > ENV_SIZE
) {
211 puts ("*** Error - default environment is too large\n\n");
215 memset(env_ptr
, 0, sizeof(env_t
));
216 memcpy(env_ptr
->data
, default_environment
,
217 sizeof(default_environment
));
218 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
219 env_ptr
->flags
= 0xFF;
225 void env_relocate (void)
227 #ifndef CONFIG_RELOC_FIXUP_WORKS
228 DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__
,__LINE__
,
232 #ifdef CONFIG_AMIGAONEG3SE
236 #ifdef ENV_IS_EMBEDDED
238 * The environment buffer is embedded with the text segment,
239 * just relocate the environment pointer
241 #ifndef CONFIG_RELOC_FIXUP_WORKS
242 env_ptr
= (env_t
*)((ulong
)env_ptr
+ gd
->reloc_off
);
244 DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__
,__LINE__
,env_ptr
);
247 * We must allocate a buffer for the environment
249 env_ptr
= (env_t
*)malloc (CONFIG_ENV_SIZE
);
250 DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__
,__LINE__
,env_ptr
);
253 if (gd
->env_valid
== 0) {
254 #if defined(CONFIG_GTH) || defined(CONFIG_ENV_IS_NOWHERE) /* Environment not changable */
255 puts ("Using default environment\n\n");
257 puts ("*** Warning - bad CRC, using default environment\n\n");
258 show_boot_progress (-60);
263 env_relocate_spec ();
265 gd
->env_addr
= (ulong
)&(env_ptr
->data
);
267 #ifdef CONFIG_AMIGAONEG3SE
272 #ifdef CONFIG_AUTO_COMPLETE
273 int env_complete(char *var
, int maxv
, char *cmdv
[], int bufsz
, char *buf
)
275 int i
, nxt
, len
, vallen
, found
;
276 const char *lval
, *rval
;
282 /* now iterate over the variables and select those that match */
283 for (i
=0; env_get_char(i
) != '\0'; i
=nxt
+1) {
285 for (nxt
=i
; env_get_char(nxt
) != '\0'; ++nxt
)
288 lval
= (char *)env_get_addr(i
);
289 rval
= strchr(lval
, '=');
291 vallen
= rval
- lval
;
294 vallen
= strlen(lval
);
296 if (len
> 0 && (vallen
< len
|| memcmp(lval
, var
, len
) != 0))
299 if (found
>= maxv
- 2 || bufsz
< vallen
+ 1) {
300 cmdv
[found
++] = "...";
304 memcpy(buf
, lval
, vallen
); buf
+= vallen
; bufsz
-= vallen
;
305 *buf
++ = '\0'; bufsz
--;