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 #ifdef CONFIG_SHOW_BOOT_PROGRESS
34 # include <status_led.h>
35 # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
37 # define SHOW_BOOT_PROGRESS(arg)
40 DECLARE_GLOBAL_DATA_PTR;
42 #ifdef CONFIG_AMIGAONEG3SE
43 extern void enable_nvram(void);
44 extern void disable_nvram(void);
49 #define DEBUGF(fmt,args...) printf(fmt ,##args)
51 #define DEBUGF(fmt,args...)
54 extern env_t *env_ptr;
56 extern void env_relocate_spec (void);
57 extern uchar env_get_char_spec(int);
59 static uchar env_get_char_init (int index);
60 uchar (*env_get_char)(int) = env_get_char_init;
62 /************************************************************************
63 * Default settings to be used when no valid environment is found
66 #define MK_STR(x) XMK_STR(x)
68 uchar default_environment[] = {
69 #ifdef CONFIG_BOOTARGS
70 "bootargs=" CONFIG_BOOTARGS "\0"
72 #ifdef CONFIG_BOOTCOMMAND
73 "bootcmd=" CONFIG_BOOTCOMMAND "\0"
75 #ifdef CONFIG_RAMBOOTCOMMAND
76 "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
78 #ifdef CONFIG_NFSBOOTCOMMAND
79 "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
81 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
82 "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
84 #if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
85 "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
87 #ifdef CONFIG_LOADS_ECHO
88 "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0"
91 "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
93 #ifdef CONFIG_ETH1ADDR
94 "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0"
96 #ifdef CONFIG_ETH2ADDR
97 "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0"
99 #ifdef CONFIG_ETH3ADDR
100 "eth3addr=" MK_STR(CONFIG_ETH3ADDR) "\0"
103 "ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
105 #ifdef CONFIG_SERVERIP
106 "serverip=" MK_STR(CONFIG_SERVERIP) "\0"
109 "autoload=" CFG_AUTOLOAD "\0"
111 #ifdef CONFIG_PREBOOT
112 "preboot=" CONFIG_PREBOOT "\0"
114 #ifdef CONFIG_ROOTPATH
115 "rootpath=" MK_STR(CONFIG_ROOTPATH) "\0"
117 #ifdef CONFIG_GATEWAYIP
118 "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0"
120 #ifdef CONFIG_NETMASK
121 "netmask=" MK_STR(CONFIG_NETMASK) "\0"
123 #ifdef CONFIG_HOSTNAME
124 "hostname=" MK_STR(CONFIG_HOSTNAME) "\0"
126 #ifdef CONFIG_BOOTFILE
127 "bootfile=" MK_STR(CONFIG_BOOTFILE) "\0"
129 #ifdef CONFIG_LOADADDR
130 "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0"
132 #ifdef CONFIG_CLOCKS_IN_MHZ
135 #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
136 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0"
138 #ifdef CONFIG_EXTRA_ENV_SETTINGS
139 CONFIG_EXTRA_ENV_SETTINGS
144 #if defined(CFG_ENV_IS_IN_NAND) /* Environment is in Nand Flash */
145 int default_environment_size = sizeof(default_environment);
148 void env_crc_update (void)
150 env_ptr->crc = crc32(0, env_ptr->data, ENV_SIZE);
153 static uchar env_get_char_init (int index)
157 /* if crc was bad, use the default environment */
160 c = env_get_char_spec(index);
162 c = default_environment[index];
168 #ifdef CONFIG_AMIGAONEG3SE
169 uchar env_get_char_memory (int index)
174 retval = ( *((uchar *)(gd->env_addr + index)) );
176 retval = ( default_environment[index] );
182 uchar env_get_char_memory (int index)
185 return ( *((uchar *)(gd->env_addr + index)) );
187 return ( default_environment[index] );
192 uchar *env_get_addr (int index)
195 return ( ((uchar *)(gd->env_addr + index)) );
197 return (&default_environment[index]);
201 void env_relocate (void)
203 DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__,
206 #ifdef CONFIG_AMIGAONEG3SE
210 #ifdef ENV_IS_EMBEDDED
212 * The environment buffer is embedded with the text segment,
213 * just relocate the environment pointer
215 env_ptr = (env_t *)((ulong)env_ptr + gd->reloc_off);
216 DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
219 * We must allocate a buffer for the environment
221 env_ptr = (env_t *)malloc (CFG_ENV_SIZE);
222 DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
226 * After relocation to RAM, we can always use the "memory" functions
228 env_get_char = env_get_char_memory;
230 if (gd->env_valid == 0) {
231 #if defined(CONFIG_GTH) || defined(CFG_ENV_IS_NOWHERE) /* Environment not changable */
232 puts ("Using default environment\n\n");
234 puts ("*** Warning - bad CRC, using default environment\n\n");
235 SHOW_BOOT_PROGRESS (-1);
238 if (sizeof(default_environment) > ENV_SIZE)
240 puts ("*** Error - default environment is too large\n\n");
244 memset (env_ptr, 0, sizeof(env_t));
245 memcpy (env_ptr->data,
247 sizeof(default_environment));
248 #ifdef CFG_REDUNDAND_ENVIRONMENT
249 env_ptr->flags = 0xFF;
255 env_relocate_spec ();
257 gd->env_addr = (ulong)&(env_ptr->data);
259 #ifdef CONFIG_AMIGAONEG3SE
264 #ifdef CONFIG_AUTO_COMPLETE
265 int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf)
267 int i, nxt, len, vallen, found;
268 const char *lval, *rval;
274 /* now iterate over the variables and select those that match */
275 for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
277 for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
280 lval = (char *)env_get_addr(i);
281 rval = strchr(lval, '=');
283 vallen = rval - lval;
286 vallen = strlen(lval);
288 if (len > 0 && (vallen < len || memcmp(lval, var, len) != 0))
291 if (found >= maxv - 2 || bufsz < vallen + 1) {
292 cmdv[found++] = "...";
296 memcpy(buf, lval, vallen); buf += vallen; bufsz -= vallen;
297 *buf++ = '\0'; bufsz--;