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 || defined(CFG_ENV_IS_IN_SPI_FLASH)
139 int default_environment_size = sizeof(default_environment);
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_addr (int index)
189 return ( ((uchar *)(gd->env_addr + index)) );
191 return (&default_environment[index]);
195 void env_relocate (void)
197 DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__,
200 #ifdef CONFIG_AMIGAONEG3SE
204 #ifdef ENV_IS_EMBEDDED
206 * The environment buffer is embedded with the text segment,
207 * just relocate the environment pointer
209 env_ptr = (env_t *)((ulong)env_ptr + gd->reloc_off);
210 DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
213 * We must allocate a buffer for the environment
215 env_ptr = (env_t *)malloc (CFG_ENV_SIZE);
216 DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
220 * After relocation to RAM, we can always use the "memory" functions
222 env_get_char = env_get_char_memory;
224 if (gd->env_valid == 0) {
225 #if defined(CONFIG_GTH) || defined(CFG_ENV_IS_NOWHERE) /* Environment not changable */
226 puts ("Using default environment\n\n");
228 puts ("*** Warning - bad CRC, using default environment\n\n");
229 show_boot_progress (-60);
232 if (sizeof(default_environment) > ENV_SIZE)
234 puts ("*** Error - default environment is too large\n\n");
238 memset (env_ptr, 0, sizeof(env_t));
239 memcpy (env_ptr->data,
241 sizeof(default_environment));
242 #ifdef CFG_REDUNDAND_ENVIRONMENT
243 env_ptr->flags = 0xFF;
249 env_relocate_spec ();
251 gd->env_addr = (ulong)&(env_ptr->data);
253 #ifdef CONFIG_AMIGAONEG3SE
258 #ifdef CONFIG_AUTO_COMPLETE
259 int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf)
261 int i, nxt, len, vallen, found;
262 const char *lval, *rval;
268 /* now iterate over the variables and select those that match */
269 for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
271 for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
274 lval = (char *)env_get_addr(i);
275 rval = strchr(lval, '=');
277 vallen = rval - lval;
280 vallen = strlen(lval);
282 if (len > 0 && (vallen < len || memcmp(lval, var, len) != 0))
285 if (found >= maxv - 2 || bufsz < vallen + 1) {
286 cmdv[found++] = "...";
290 memcpy(buf, lval, vallen); buf += vallen; bufsz -= vallen;
291 *buf++ = '\0'; bufsz--;