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"
95 "ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
97 #ifdef CONFIG_SERVERIP
98 "serverip=" MK_STR(CONFIG_SERVERIP) "\0"
101 "autoload=" CFG_AUTOLOAD "\0"
103 #ifdef CONFIG_PREBOOT
104 "preboot=" CONFIG_PREBOOT "\0"
106 #ifdef CONFIG_ROOTPATH
107 "rootpath=" MK_STR(CONFIG_ROOTPATH) "\0"
109 #ifdef CONFIG_GATEWAYIP
110 "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0"
112 #ifdef CONFIG_NETMASK
113 "netmask=" MK_STR(CONFIG_NETMASK) "\0"
115 #ifdef CONFIG_HOSTNAME
116 "hostname=" MK_STR(CONFIG_HOSTNAME) "\0"
118 #ifdef CONFIG_BOOTFILE
119 "bootfile=" MK_STR(CONFIG_BOOTFILE) "\0"
121 #ifdef CONFIG_LOADADDR
122 "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0"
124 #ifdef CONFIG_CLOCKS_IN_MHZ
127 #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
128 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0"
130 #ifdef CONFIG_EXTRA_ENV_SETTINGS
131 CONFIG_EXTRA_ENV_SETTINGS
136 #if defined(CONFIG_ENV_IS_IN_NAND) /* Environment is in Nand Flash */ \
137 || defined(CONFIG_ENV_IS_IN_SPI_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_char (int index)
189 /* if relocated to RAM */
190 if (gd->flags & GD_FLG_RELOC)
191 c = env_get_char_memory(index);
193 c = env_get_char_init(index);
198 uchar *env_get_addr (int index)
201 return ( ((uchar *)(gd->env_addr + index)) );
203 return (&default_environment[index]);
207 void set_default_env(void)
209 if (sizeof(default_environment) > ENV_SIZE) {
210 puts ("*** Error - default environment is too large\n\n");
214 memset(env_ptr, 0, sizeof(env_t));
215 memcpy(env_ptr->data, default_environment,
216 sizeof(default_environment));
217 #ifdef CFG_REDUNDAND_ENVIRONMENT
218 env_ptr->flags = 0xFF;
224 void env_relocate (void)
226 DEBUGF ("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__,
229 #ifdef CONFIG_AMIGAONEG3SE
233 #ifdef ENV_IS_EMBEDDED
235 * The environment buffer is embedded with the text segment,
236 * just relocate the environment pointer
238 env_ptr = (env_t *)((ulong)env_ptr + gd->reloc_off);
239 DEBUGF ("%s[%d] embedded ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
242 * We must allocate a buffer for the environment
244 env_ptr = (env_t *)malloc (CFG_ENV_SIZE);
245 DEBUGF ("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
248 if (gd->env_valid == 0) {
249 #if defined(CONFIG_GTH) || defined(CONFIG_ENV_IS_NOWHERE) /* Environment not changable */
250 puts ("Using default environment\n\n");
252 puts ("*** Warning - bad CRC, using default environment\n\n");
253 show_boot_progress (-60);
258 env_relocate_spec ();
260 gd->env_addr = (ulong)&(env_ptr->data);
262 #ifdef CONFIG_AMIGAONEG3SE
267 #ifdef CONFIG_AUTO_COMPLETE
268 int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf)
270 int i, nxt, len, vallen, found;
271 const char *lval, *rval;
277 /* now iterate over the variables and select those that match */
278 for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
280 for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
283 lval = (char *)env_get_addr(i);
284 rval = strchr(lval, '=');
286 vallen = rval - lval;
289 vallen = strlen(lval);
291 if (len > 0 && (vallen < len || memcmp(lval, var, len) != 0))
294 if (found >= maxv - 2 || bufsz < vallen + 1) {
295 cmdv[found++] = "...";
299 memcpy(buf, lval, vallen); buf += vallen; bufsz -= vallen;
300 *buf++ = '\0'; bufsz--;