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_FADS) || \
50 defined(CONFIG_HYMOD) || \
51 defined(CONFIG_ICU862) || \
52 defined(CONFIG_R360MPI) || \
53 defined(CONFIG_TQM8xxL) || \
54 defined(CONFIG_RRVISION) || \
55 defined(CONFIG_TRAB) ) && \
56 defined(ENV_CRC) /* Environment embedded in U-Boot .ppcenv section */
57 /* XXX - This only works with GNU C */
58 # define __PPCENV__ __attribute__ ((section(".ppcenv")))
59 # define __PPCTEXT__ __attribute__ ((section(".text")))
61 #elif defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
62 # define __PPCENV__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
63 # define __PPCTEXT__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
65 #else /* Environment is embedded in U-Boot's .text section */
66 /* XXX - This only works with GNU C */
67 # define __PPCENV__ __attribute__ ((section(".text")))
68 # define __PPCTEXT__ __attribute__ ((section(".text")))
72 * Macros to generate global absolutes.
74 #define GEN_SYMNAME(str) SYM_CHAR #str
75 #define GEN_VALUE(str) #str
76 #define GEN_ABS(name, value) \
77 asm (".globl " GEN_SYMNAME(name)); \
78 asm (GEN_SYMNAME(name) " = " GEN_VALUE(value))
81 * Macros to transform values
82 * into environment strings.
85 #define MK_STR(x) XMK_STR(x)
88 * Check to see if we are building with a
89 * computed CRC. Otherwise define it as ~0.
95 env_t environment __PPCENV__ = {
96 ENV_CRC, /* CRC Sum */
97 #ifdef CFG_REDUNDAND_ENVIRONMENT
101 #if defined(CONFIG_BOOTARGS)
102 "bootargs=" CONFIG_BOOTARGS "\0"
104 #if defined(CONFIG_BOOTCOMMAND)
105 "bootcmd=" CONFIG_BOOTCOMMAND "\0"
107 #if defined(CONFIG_RAMBOOTCOMMAND)
108 "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
110 #if defined(CONFIG_NFSBOOTCOMMAND)
111 "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
113 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
114 "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
116 #if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
117 "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
119 #ifdef CONFIG_LOADS_ECHO
120 "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0"
122 #ifdef CONFIG_ETHADDR
123 "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
125 #ifdef CONFIG_ETH1ADDR
126 "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0"
128 #ifdef CONFIG_ETH2ADDR
129 "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0"
131 #ifdef CONFIG_ETHPRIME
132 "ethprime=" CONFIG_ETHPRIME "\0"
135 "ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
137 #ifdef CONFIG_SERVERIP
138 "serverip=" MK_STR(CONFIG_SERVERIP) "\0"
141 "autoload=" CFG_AUTOLOAD "\0"
143 #ifdef CONFIG_ROOTPATH
144 "rootpath=" MK_STR(CONFIG_ROOTPATH) "\0"
146 #ifdef CONFIG_GATEWAYIP
147 "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0"
149 #ifdef CONFIG_NETMASK
150 "netmask=" MK_STR(CONFIG_NETMASK) "\0"
152 #ifdef CONFIG_HOSTNAME
153 "hostname=" MK_STR(CONFIG_HOSTNAME) "\0"
155 #ifdef CONFIG_BOOTFILE
156 "bootfile=" MK_STR(CONFIG_BOOTFILE) "\0"
158 #ifdef CONFIG_LOADADDR
159 "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0"
161 #ifdef CONFIG_PREBOOT
162 "preboot=" CONFIG_PREBOOT "\0"
164 #ifdef CONFIG_CLOCKS_IN_MHZ
165 "clocks_in_mhz=" "1" "\0"
167 #if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
168 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0"
170 #ifdef CONFIG_EXTRA_ENV_SETTINGS
171 CONFIG_EXTRA_ENV_SETTINGS
173 "\0" /* Term. env_t.data with 2 NULs */
176 #ifdef CFG_ENV_ADDR_REDUND
177 env_t redundand_environment __PPCENV__ = {
178 0, /* CRC Sum: invalid */
179 0, /* Flags: invalid */
184 #endif /* CFG_ENV_ADDR_REDUND */
187 * These will end up in the .text section
188 * if the environment strings are embedded
189 * in the image. When this is used for
190 * tools/envcrc, they are placed in the
191 * .data/.sdata section.
194 unsigned long env_size __PPCTEXT__ = sizeof(env_t);
199 GEN_ABS(env_offset, CFG_ENV_OFFSET);
201 #endif /* ENV_IS_EMBEDDED */