blob: a868dccbdc84184298c3b0eca59714cae9c994d2 [file] [log] [blame]
wdenkc6097192002-11-03 00:24:07 +00001/*
2 * (C) Copyright 2001
3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24#include <config.h>
25#include <environment.h>
26
27/*
28 * Handle HOSTS that have prepended
29 * crap on symbol names, not TARGETS.
30 */
31#if defined(__APPLE__)
32/* Leading underscore on symbols */
33# define SYM_CHAR "_"
34#else /* No leading character on symbols */
35# define SYM_CHAR
36#endif
37
38/*
39 * Generate embedded environment table
40 * inside U-Boot image, if needed.
41 */
42#if defined(ENV_IS_EMBEDDED)
43/*
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
47 * U-Boot itself.
48 */
wdenk0db5bca2003-03-31 17:27:09 +000049#if (defined(CONFIG_CMI) || \
50 defined(CONFIG_FADS) || \
wdenkc6097192002-11-03 00:24:07 +000051 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")))
61
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*/
65
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")))
70#endif
71
72/*
73 * Macros to generate global absolutes.
74 */
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))
80
81/*
82 * Macros to transform values
83 * into environment strings.
84 */
85#define XMK_STR(x) #x
86#define MK_STR(x) XMK_STR(x)
87
88/*
89 * Check to see if we are building with a
90 * computed CRC. Otherwise define it as ~0.
91 */
92#if !defined(ENV_CRC)
93# define ENV_CRC ~0
94#endif
95
96env_t environment __PPCENV__ = {
97 ENV_CRC, /* CRC Sum */
98#ifdef CFG_REDUNDAND_ENVIRONMENT
99 1, /* Flags: valid */
100#endif
101 {
102#if defined(CONFIG_BOOTARGS)
103 "bootargs=" CONFIG_BOOTARGS "\0"
104#endif
105#if defined(CONFIG_BOOTCOMMAND)
106 "bootcmd=" CONFIG_BOOTCOMMAND "\0"
107#endif
108#if defined(CONFIG_RAMBOOTCOMMAND)
109 "ramboot=" CONFIG_RAMBOOTCOMMAND "\0"
110#endif
111#if defined(CONFIG_NFSBOOTCOMMAND)
112 "nfsboot=" CONFIG_NFSBOOTCOMMAND "\0"
113#endif
114#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
115 "bootdelay=" MK_STR(CONFIG_BOOTDELAY) "\0"
116#endif
117#if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
118 "baudrate=" MK_STR(CONFIG_BAUDRATE) "\0"
119#endif
120#ifdef CONFIG_LOADS_ECHO
121 "loads_echo=" MK_STR(CONFIG_LOADS_ECHO) "\0"
122#endif
123#ifdef CONFIG_ETHADDR
124 "ethaddr=" MK_STR(CONFIG_ETHADDR) "\0"
125#endif
126#ifdef CONFIG_ETH1ADDR
127 "eth1addr=" MK_STR(CONFIG_ETH1ADDR) "\0"
128#endif
129#ifdef CONFIG_ETH2ADDR
130 "eth2addr=" MK_STR(CONFIG_ETH2ADDR) "\0"
131#endif
132#ifdef CONFIG_ETHPRIME
133 "ethprime=" CONFIG_ETHPRIME "\0"
134#endif
135#ifdef CONFIG_IPADDR
136 "ipaddr=" MK_STR(CONFIG_IPADDR) "\0"
137#endif
138#ifdef CONFIG_SERVERIP
139 "serverip=" MK_STR(CONFIG_SERVERIP) "\0"
140#endif
141#ifdef CFG_AUTOLOAD
142 "autoload=" CFG_AUTOLOAD "\0"
143#endif
144#ifdef CONFIG_ROOTPATH
145 "rootpath=" MK_STR(CONFIG_ROOTPATH) "\0"
146#endif
147#ifdef CONFIG_GATEWAYIP
148 "gatewayip=" MK_STR(CONFIG_GATEWAYIP) "\0"
149#endif
150#ifdef CONFIG_NETMASK
151 "netmask=" MK_STR(CONFIG_NETMASK) "\0"
152#endif
153#ifdef CONFIG_HOSTNAME
154 "hostname=" MK_STR(CONFIG_HOSTNAME) "\0"
155#endif
156#ifdef CONFIG_BOOTFILE
157 "bootfile=" MK_STR(CONFIG_BOOTFILE) "\0"
158#endif
159#ifdef CONFIG_LOADADDR
160 "loadaddr=" MK_STR(CONFIG_LOADADDR) "\0"
161#endif
162#ifdef CONFIG_PREBOOT
163 "preboot=" CONFIG_PREBOOT "\0"
164#endif
165#ifdef CONFIG_CLOCKS_IN_MHZ
166 "clocks_in_mhz=" "1" "\0"
167#endif
stroesead10dd92003-02-14 11:21:23 +0000168#if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
169 "pcidelay=" MK_STR(CONFIG_PCI_BOOTDELAY) "\0"
170#endif
wdenkc6097192002-11-03 00:24:07 +0000171#ifdef CONFIG_EXTRA_ENV_SETTINGS
172 CONFIG_EXTRA_ENV_SETTINGS
173#endif
wdenkd0fb80c2003-01-11 09:48:40 +0000174 "\0" /* Term. env_t.data with 2 NULs */
wdenkc6097192002-11-03 00:24:07 +0000175 }
176};
177#ifdef CFG_ENV_ADDR_REDUND
178env_t redundand_environment __PPCENV__ = {
179 0, /* CRC Sum: invalid */
180 0, /* Flags: invalid */
181 {
182 "\0"
183 }
184};
185#endif /* CFG_ENV_ADDR_REDUND */
186
187/*
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.
193 *
194 */
195unsigned long env_size __PPCTEXT__ = sizeof(env_t);
196
197/*
198 * Add in absolutes.
199 */
200GEN_ABS(env_offset, CFG_ENV_OFFSET);
201
202#endif /* ENV_IS_EMBEDDED */