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 <env_scripts.h>
31 #include <linux/stddef.h>
35 DECLARE_GLOBAL_DATA_PTR;
39 #if defined(DEBUG_ENV)
40 #define DEBUGF(fmt,args...) printf(fmt ,##args)
42 #define DEBUGF(fmt,args...)
45 extern env_t *env_ptr;
47 extern void env_relocate_spec(void);
48 extern uchar env_get_char_spec(int);
50 static uchar env_get_char_init(int index);
51 uchar (*env_get_char)(int) = env_get_char_init;
53 /************************************************************************
54 * Default settings to be used when no valid environment is found
57 #define MK_STR(x) XMK_STR(x)
59 uchar default_environment[] = {
60 #if defined(CONFIG_BOOTARGS)
61 "bootargs=" CONFIG_BOOTARGS "\0"
63 #if defined(CONFIG_BOOTCOMMAND)
64 "bootcmd=" CONFIG_BOOTCOMMAND "\0"
66 #if defined(CONFIG_AUTOBOOT_STOP_STR)
67 "bootstopkey=" CONFIG_AUTOBOOT_STOP_STR "\0"
69 #if defined(CONFIG_RAMBOOTCOMMAND)
70 "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
72 #if defined(CONFIG_NFSBOOTCOMMAND)
73 "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
75 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
76 "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
78 #if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
79 "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
81 #if defined(CONFIG_LOADS_ECHO)
82 "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0"
84 #if defined(CONFIG_ETHADDR)
85 "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
87 #if defined(CONFIG_ETH1ADDR)
88 "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0"
90 #if defined(CONFIG_ETH2ADDR)
91 "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0"
93 #if defined(CONFIG_ETH3ADDR)
94 "eth3addr=" MK_STR(CONFIG_ETH3ADDR) "\0"
96 #if defined(CONFIG_IPADDR)
97 "ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
99 #if defined(CONFIG_SERVERIP)
100 "serverip=" MK_STR(CONFIG_SERVERIP) "\0"
102 #if defined(CONFIG_AUTOLOAD)
103 "autoload=" MK_STR(CONFIG_AUTOLOAD) "\0"
105 #if defined(CONFIG_ROOTPATH)
106 "rootpath=" MK_STR(CONFIG_ROOTPATH) "\0"
108 #if defined(CONFIG_GATEWAYIP)
109 "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0"
111 #if defined(CONFIG_NETMASK)
112 "netmask=" MK_STR(CONFIG_NETMASK) "\0"
114 #if defined(CONFIG_HOSTNAME)
115 "hostname=" MK_STR(CONFIG_HOSTNAME) "\0"
117 #if defined(CONFIG_BOOTFILE)
118 "bootfile=" MK_STR(CONFIG_BOOTFILE) "\0"
120 #if defined(CONFIG_LOADADDR)
121 "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0"
123 #if defined(CONFIG_CLOCKS_IN_MHZ)
126 #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
127 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0"
129 #if defined(CONFIG_NETCONSOLE_PORT)
130 "ncport=" MK_STR(CONFIG_NETCONSOLE_PORT) "\0"
132 #if defined(CONFIG_LSDK_KERNEL)
135 #if defined(CONFIG_EXTRA_ENV_SETTINGS)
136 CONFIG_EXTRA_ENV_SETTINGS
138 #if defined(CONFIG_ENV_UPG_SCRIPTS_UBOOT)
139 CONFIG_ENV_UPG_SCRIPTS_UBOOT
141 #if defined(CONFIG_ENV_UPG_SCRIPTS_FW)
142 CONFIG_ENV_UPG_SCRIPTS_FW
144 #if defined(CONFIG_ENV_BTN_RECOVERY_SCRIPT)
145 CONFIG_ENV_BTN_RECOVERY_SCRIPT
150 /* Environment is in Nand Flash */
151 #if defined(CFG_ENV_IS_IN_NAND)
152 int default_environment_size = sizeof(default_environment);
155 void env_crc_update(void)
157 env_ptr->crc = tinf_crc32(env_ptr->data, ENV_SIZE);
160 static uchar env_get_char_init(int index)
164 /* if crc was bad, use the default environment */
166 c = env_get_char_spec(index);
168 c = default_environment[index];
173 uchar env_get_char_memory(int index)
176 return *((uchar *)(gd->env_addr + index));
178 return default_environment[index];
181 uchar *env_get_addr(int index)
184 return ((uchar *)(gd->env_addr + index));
186 return &default_environment[index];
189 void env_relocate(void)
191 DEBUGF("%s[%d] offset = 0x%lx\n", __FUNCTION__,__LINE__, gd->reloc_off);
193 #if defined(ENV_IS_EMBEDDED)
195 * The environment buffer is embedded with the text segment,
196 * just relocate the environment pointer
198 env_ptr = (env_t *)((ulong)env_ptr + gd->reloc_off);
199 DEBUGF("%s[%d] embedded ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
201 /* We must allocate a buffer for the environment */
202 env_ptr = (env_t *)malloc(CFG_ENV_SIZE);
203 DEBUGF("%s[%d] malloced ENV at %p\n", __FUNCTION__,__LINE__,env_ptr);
206 /* After relocation to RAM, we can always use the "memory" functions */
207 env_get_char = env_get_char_memory;
209 if (gd->env_valid == 0) {
210 #if !defined(CFG_ENV_IS_NOWHERE)
211 printf_wrn("bad env CRC, using default,\n"
212 " use 'saveenv' to save it in FLASH\n\n");
215 if (sizeof(default_environment) > ENV_SIZE) {
216 printf_err("default env is too big!\n");
220 memset(env_ptr, 0, sizeof(env_t));
221 memcpy(env_ptr->data, default_environment,
222 sizeof(default_environment));
224 #if defined(CFG_REDUNDAND_ENVIRONMENT)
225 env_ptr->flags = 0xFF;
234 gd->env_addr = (ulong)&(env_ptr->data);