summaryrefslogtreecommitdiff
path: root/common/environment.c
blob: 3d8493a502a6a38a2e2b164ded96ea7f4e287a9e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
/*
 * (C) Copyright 2001
 * Erik Theisen,  Wave 7 Optics, etheisen@mindspring.com.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <config.h>
#include <environment.h>

/*
 * Handle HOSTS that have prepended
 * crap on symbol names, not TARGETS.
 */
#if defined(__APPLE__)
/* Leading underscore on symbols */
#  define SYM_CHAR "_"
#else /* No leading character on symbols */
#  define SYM_CHAR
#endif

/*
 * Generate embedded environment table
 * inside U-Boot image, if needed.
 */
#if defined(ENV_IS_EMBEDDED)
/*
 * Only put the environment in it's own section when we are building
 * U-Boot proper.  The host based program "tools/envcrc" does not need
 * a seperate section.  Note that ENV_CRC is only defined when building
 * U-Boot itself.
 */
#if (defined(CONFIG_CMI)	|| \
     defined(CONFIG_FADS)	|| \
     defined(CONFIG_HYMOD)	|| \
     defined(CONFIG_ICU862)	|| \
     defined(CONFIG_R360MPI)	|| \
     defined(CONFIG_TQM8xxL)	|| \
     defined(CONFIG_RRVISION)	|| \
     defined(CONFIG_TRAB)   	|| \
     defined(CONFIG_PPCHAMELEONEVB) )	&& \
     defined(ENV_CRC) /* Environment embedded in U-Boot .ppcenv section */
/* XXX - This only works with GNU C */
#  define __PPCENV__ __attribute__ ((section(".ppcenv")))
#  define __PPCTEXT__ __attribute__ ((section(".text")))

#elif defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
#  define __PPCENV__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
#  define __PPCTEXT__ /*XXX DO_NOT_DEL_THIS_COMMENT*/

#else /* Environment is embedded in U-Boot's .text section */
/* XXX - This only works with GNU C */
#  define __PPCENV__ __attribute__ ((section(".text")))
#  define __PPCTEXT__ __attribute__ ((section(".text")))
#endif

/*
 * Macros to generate global absolutes.
 */
#define GEN_SYMNAME(str) SYM_CHAR #str
#define GEN_VALUE(str) #str
#define GEN_ABS(name, value) \
		asm (".globl " GEN_SYMNAME(name)); \
		asm (GEN_SYMNAME(name) " = " GEN_VALUE(value))

/*
 * Macros to transform values
 * into environment strings.
 */
#define XMK_STR(x)	#x
#define MK_STR(x)	XMK_STR(x)

/*
 * Check to see if we are building with a
 * computed CRC.  Otherwise define it as ~0.
 */
#if !defined(ENV_CRC)
#  define ENV_CRC	~0
#endif

env_t environment __PPCENV__ = {
	ENV_CRC,	/* CRC Sum */
#ifdef CFG_REDUNDAND_ENVIRONMENT
	1,		/* Flags: valid */
#endif
	{
#if defined(CONFIG_BOOTARGS)
	"bootargs="	CONFIG_BOOTARGS			"\0"
#endif
#if defined(CONFIG_BOOTCOMMAND)
	"bootcmd="	CONFIG_BOOTCOMMAND		"\0"
#endif
#if defined(CONFIG_RAMBOOTCOMMAND)
	"ramboot="	CONFIG_RAMBOOTCOMMAND		"\0"
#endif
#if defined(CONFIG_NFSBOOTCOMMAND)
	"nfsboot="	CONFIG_NFSBOOTCOMMAND		"\0"
#endif
#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
	"bootdelay="	MK_STR(CONFIG_BOOTDELAY)	"\0"
#endif
#if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
	"baudrate="	MK_STR(CONFIG_BAUDRATE)		"\0"
#endif
#ifdef	CONFIG_LOADS_ECHO
	"loads_echo="	MK_STR(CONFIG_LOADS_ECHO)	"\0"
#endif
#ifdef	CONFIG_ETHADDR
	"ethaddr="	MK_STR(CONFIG_ETHADDR)		"\0"
#endif
#ifdef	CONFIG_ETH1ADDR
	"eth1addr="	MK_STR(CONFIG_ETH1ADDR)		"\0"
#endif
#ifdef	CONFIG_ETH2ADDR
	"eth2addr="	MK_STR(CONFIG_ETH2ADDR)		"\0"
#endif
#ifdef	CONFIG_ETHPRIME
	"ethprime="	CONFIG_ETHPRIME			"\0"
#endif
#ifdef	CONFIG_IPADDR
	"ipaddr="	MK_STR(CONFIG_IPADDR)		"\0"
#endif
#ifdef	CONFIG_SERVERIP
	"serverip="	MK_STR(CONFIG_SERVERIP)		"\0"
#endif
#ifdef	CFG_AUTOLOAD
	"autoload="	CFG_AUTOLOAD			"\0"
#endif
#ifdef	CONFIG_ROOTPATH
	"rootpath="	MK_STR(CONFIG_ROOTPATH)		"\0"
#endif
#ifdef	CONFIG_GATEWAYIP
	"gatewayip="	MK_STR(CONFIG_GATEWAYIP)	"\0"
#endif
#ifdef	CONFIG_NETMASK
	"netmask="	MK_STR(CONFIG_NETMASK)		"\0"
#endif
#ifdef	CONFIG_HOSTNAME
	"hostname="	MK_STR(CONFIG_HOSTNAME)		"\0"
#endif
#ifdef	CONFIG_BOOTFILE
	"bootfile="	MK_STR(CONFIG_BOOTFILE)		"\0"
#endif
#ifdef	CONFIG_LOADADDR
	"loadaddr="	MK_STR(CONFIG_LOADADDR)		"\0"
#endif
#ifdef	CONFIG_PREBOOT
	"preboot="	CONFIG_PREBOOT			"\0"
#endif
#ifdef	CONFIG_CLOCKS_IN_MHZ
	"clocks_in_mhz=" "1"				"\0"
#endif
#if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
	"pcidelay="	MK_STR(CONFIG_PCI_BOOTDELAY)	"\0"
#endif
#ifdef  CONFIG_EXTRA_ENV_SETTINGS
	CONFIG_EXTRA_ENV_SETTINGS
#endif
	"\0"		/* Term. env_t.data with 2 NULs */
	}
};
#ifdef CFG_ENV_ADDR_REDUND
env_t redundand_environment __PPCENV__ = {
	0,		/* CRC Sum: invalid */
	0,		/* Flags:   invalid */
	{
	"\0"
	}
};
#endif	/* CFG_ENV_ADDR_REDUND */

/*
 * These will end up in the .text section
 * if the environment strings are embedded
 * in the image.  When this is used for
 * tools/envcrc, they are placed in the
 * .data/.sdata section.
 *
 */
unsigned long env_size __PPCTEXT__ = sizeof(env_t);

/*
 * Add in absolutes.
 */
GEN_ABS(env_offset, CFG_ENV_OFFSET);

#endif /* ENV_IS_EMBEDDED */