3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 #include <environment.h>
28 * Handle HOSTS that have prepended
29 * crap on symbol names, not TARGETS.
31 #if defined(__APPLE__)
32 /* Leading underscore on symbols */
34 #else /* No leading character on symbols */
39 * Generate embedded environment table
40 * inside U-Boot image, if needed.
42 #if defined(ENV_IS_EMBEDDED)
44 * Only put the environment in it's own section when we are building
45 * U-Boot proper. The host based program "tools/envcrc" does not need
46 * a seperate section. Note that ENV_CRC is only defined when building
49 #if (defined(CONFIG_CMI) || \
50 defined(CONFIG_FADS) || \
51 defined(CONFIG_HYMOD) || \
52 defined(CONFIG_ICU862) || \
53 defined(CONFIG_R360MPI) || \
54 defined(CONFIG_TQM8xxL) || \
55 defined(CONFIG_RRVISION) || \
56 defined(CONFIG_TRAB) ) && \
57 defined(ENV_CRC) /* Environment embedded in U-Boot .ppcenv section */
58 /* XXX - This only works with GNU C */
59 # define __PPCENV__ __attribute__ ((section(".ppcenv")))
60 # define __PPCTEXT__ __attribute__ ((section(".text")))
62 #elif defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
63 # define __PPCENV__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
64 # define __PPCTEXT__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
66 #else /* Environment is embedded in U-Boot's .text section */
67 /* XXX - This only works with GNU C */
68 # define __PPCENV__ __attribute__ ((section(".text")))
69 # define __PPCTEXT__ __attribute__ ((section(".text")))
73 * Macros to generate global absolutes.
75 #define GEN_SYMNAME(str) SYM_CHAR #str
76 #define GEN_VALUE(str) #str
77 #define GEN_ABS(name, value) \
78 asm (".globl " GEN_SYMNAME(name)); \
79 asm (GEN_SYMNAME(name) " = " GEN_VALUE(value))
82 * Macros to transform values
83 * into environment strings.
86 #define MK_STR(x) XMK_STR(x)
89 * Check to see if we are building with a
90 * computed CRC. Otherwise define it as ~0.
96 env_t environment __PPCENV__ = {
97 ENV_CRC, /* CRC Sum */
98 #ifdef CFG_REDUNDAND_ENVIRONMENT
102 #if defined(CONFIG_BOOTARGS)
103 "bootargs=" CONFIG_BOOTARGS "\0"
105 #if defined(CONFIG_BOOTCOMMAND)
106 "bootcmd=" CONFIG_BOOTCOMMAND "\0"
108 #if defined(CONFIG_RAMBOOTCOMMAND)
109 "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
111 #if defined(CONFIG_NFSBOOTCOMMAND)
112 "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
114 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
115 "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
117 #if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
118 "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
120 #ifdef CONFIG_LOADS_ECHO
121 "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0"
123 #ifdef CONFIG_ETHADDR
124 "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
126 #ifdef CONFIG_ETH1ADDR
127 "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0"
129 #ifdef CONFIG_ETH2ADDR
130 "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0"
132 #ifdef CONFIG_ETHPRIME
133 "ethprime=" CONFIG_ETHPRIME "\0"
136 "ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
138 #ifdef CONFIG_SERVERIP
139 "serverip=" MK_STR(CONFIG_SERVERIP) "\0"
142 "autoload=" CFG_AUTOLOAD "\0"
144 #ifdef CONFIG_ROOTPATH
145 "rootpath=" MK_STR(CONFIG_ROOTPATH) "\0"
147 #ifdef CONFIG_GATEWAYIP
148 "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0"
150 #ifdef CONFIG_NETMASK
151 "netmask=" MK_STR(CONFIG_NETMASK) "\0"
153 #ifdef CONFIG_HOSTNAME
154 "hostname=" MK_STR(CONFIG_HOSTNAME) "\0"
156 #ifdef CONFIG_BOOTFILE
157 "bootfile=" MK_STR(CONFIG_BOOTFILE) "\0"
159 #ifdef CONFIG_LOADADDR
160 "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0"
162 #ifdef CONFIG_PREBOOT
163 "preboot=" CONFIG_PREBOOT "\0"
165 #ifdef CONFIG_CLOCKS_IN_MHZ
166 "clocks_in_mhz=" "1" "\0"
168 #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
169 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0"
171 #ifdef CONFIG_EXTRA_ENV_SETTINGS
172 CONFIG_EXTRA_ENV_SETTINGS
174 "\0" /* Term. env_t.data with 2 NULs */
177 #ifdef CFG_ENV_ADDR_REDUND
178 env_t redundand_environment __PPCENV__ = {
179 0, /* CRC Sum: invalid */
180 0, /* Flags: invalid */
185 #endif /* CFG_ENV_ADDR_REDUND */
188 * These will end up in the .text section
189 * if the environment strings are embedded
190 * in the image. When this is used for
191 * tools/envcrc, they are placed in the
192 * .data/.sdata section.
195 unsigned long env_size __PPCTEXT__ = sizeof(env_t);
200 GEN_ABS(env_offset, CFG_ENV_OFFSET);
202 #endif /* ENV_IS_EMBEDDED */