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
);
53 uchar (*env_get_char
)(int) = env_get_char_init
;
55 /************************************************************************
56 * Default settings to be used when no valid environment is found
59 #define MK_STR(x) XMK_STR(x)
61 uchar default_environment
[] = {
62 #ifdef CONFIG_BOOTARGS
63 "bootargs=" CONFIG_BOOTARGS
"\0"
65 #ifdef CONFIG_BOOTCOMMAND
66 "bootcmd=" CONFIG_BOOTCOMMAND
"\0"
68 #ifdef CONFIG_RAMBOOTCOMMAND
69 "ramboot=" CONFIG_RAMBOOTCOMMAND
"\0"
71 #ifdef CONFIG_NFSBOOTCOMMAND
72 "nfsboot=" CONFIG_NFSBOOTCOMMAND
"\0"
74 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
75 "bootdelay=" MK_STR(CONFIG_BOOTDELAY
) "\0"
77 #if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
78 "baudrate=" MK_STR(CONFIG_BAUDRATE
) "\0"
80 #ifdef CONFIG_LOADS_ECHO
81 "loads_echo=" MK_STR(CONFIG_LOADS_ECHO
) "\0"
84 "ethaddr=" MK_STR(CONFIG_ETHADDR
) "\0"
86 #ifdef CONFIG_ETH1ADDR
87 "eth1addr=" MK_STR(CONFIG_ETH1ADDR
) "\0"
89 #ifdef CONFIG_ETH2ADDR
90 "eth2addr=" MK_STR(CONFIG_ETH2ADDR
) "\0"
92 #ifdef CONFIG_ETH3ADDR
93 "eth3addr=" MK_STR(CONFIG_ETH3ADDR
) "\0"
96 "ipaddr=" MK_STR(CONFIG_IPADDR
) "\0"
98 #ifdef CONFIG_SERVERIP
99 "serverip=" MK_STR(CONFIG_SERVERIP
) "\0"
102 "autoload=" CFG_AUTOLOAD
"\0"
104 #ifdef CONFIG_PREBOOT
105 "preboot=" CONFIG_PREBOOT
"\0"
107 #ifdef CONFIG_ROOTPATH
108 "rootpath=" MK_STR(CONFIG_ROOTPATH
) "\0"
110 #ifdef CONFIG_GATEWAYIP
111 "gatewayip=" MK_STR(CONFIG_GATEWAYIP
) "\0"
113 #ifdef CONFIG_NETMASK
114 "netmask=" MK_STR(CONFIG_NETMASK
) "\0"
116 #ifdef CONFIG_HOSTNAME
117 "hostname=" MK_STR(CONFIG_HOSTNAME
) "\0"
119 #ifdef CONFIG_BOOTFILE
120 "bootfile=" MK_STR(CONFIG_BOOTFILE
) "\0"
122 #ifdef CONFIG_LOADADDR
123 "loadaddr=" MK_STR(CONFIG_LOADADDR
) "\0"
125 #ifdef CONFIG_CLOCKS_IN_MHZ
128 #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
129 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY
) "\0"
131 #ifdef CONFIG_EXTRA_ENV_SETTINGS
132 CONFIG_EXTRA_ENV_SETTINGS
137 #if defined(CFG_ENV_IS_IN_NAND) /* Environment is in Nand Flash */
138 int default_environment_size
= sizeof(default_environment
);
141 void env_crc_update (void)
143 env_ptr
->crc
= crc32(0, env_ptr
->data
, ENV_SIZE
);
146 static uchar
env_get_char_init (int index
)
150 /* if crc was bad, use the default environment */
153 c
= env_get_char_spec(index
);
155 c
= default_environment
[index
];
161 #ifdef CONFIG_AMIGAONEG3SE
162 uchar
env_get_char_memory (int index
)
167 retval
= ( *((uchar
*)(gd
->env_addr
+ index
)) );
169 retval
= ( default_environment
[index
] );
175 uchar
env_get_char_memory (int index
)
178 return ( *((uchar
*)(gd
->env_addr
+ index
)) );
180 return ( default_environment
[index
] );
185 uchar
*env_get_addr (int index
)
188 return ( ((uchar
*)(gd
->env_addr
+ index
)) );
190 return (&default_environment
[index
]);
194 void env_relocate (void)
196 DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__
,__LINE__
,
199 #ifdef CONFIG_AMIGAONEG3SE
203 #ifdef ENV_IS_EMBEDDED
205 * The environment buffer is embedded with the text segment,
206 * just relocate the environment pointer
208 env_ptr
= (env_t
*)((ulong
)env_ptr
+ gd
->reloc_off
);
209 DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__
,__LINE__
,env_ptr
);
212 * We must allocate a buffer for the environment
214 env_ptr
= (env_t
*)malloc (CFG_ENV_SIZE
);
215 DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__
,__LINE__
,env_ptr
);
219 * After relocation to RAM, we can always use the "memory" functions
221 env_get_char
= env_get_char_memory
;
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");
227 puts ("*** Warning - bad CRC, using default environment\n\n");
228 show_boot_progress (-60);
231 if (sizeof(default_environment
) > ENV_SIZE
)
233 puts ("*** Error - default environment is too large\n\n");
237 memset (env_ptr
, 0, sizeof(env_t
));
238 memcpy (env_ptr
->data
,
240 sizeof(default_environment
));
241 #ifdef CFG_REDUNDAND_ENVIRONMENT
242 env_ptr
->flags
= 0xFF;
248 env_relocate_spec ();
250 gd
->env_addr
= (ulong
)&(env_ptr
->data
);
252 #ifdef CONFIG_AMIGAONEG3SE
257 #ifdef CONFIG_AUTO_COMPLETE
258 int env_complete(char *var
, int maxv
, char *cmdv
[], int bufsz
, char *buf
)
260 int i
, nxt
, len
, vallen
, found
;
261 const char *lval
, *rval
;
267 /* now iterate over the variables and select those that match */
268 for (i
=0; env_get_char(i
) != '\0'; i
=nxt
+1) {
270 for (nxt
=i
; env_get_char(nxt
) != '\0'; ++nxt
)
273 lval
= (char *)env_get_addr(i
);
274 rval
= strchr(lval
, '=');
276 vallen
= rval
- lval
;
279 vallen
= strlen(lval
);
281 if (len
> 0 && (vallen
< len
|| memcmp(lval
, var
, len
) != 0))
284 if (found
>= maxv
- 2 || bufsz
< vallen
+ 1) {
285 cmdv
[found
++] = "...";
289 memcpy(buf
, lval
, vallen
); buf
+= vallen
; bufsz
-= vallen
;
290 *buf
++ = '\0'; bufsz
--;