source: SVN/rincon/u-boot/common/env_embedded.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 5.5 KB
Line 
1/*
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#ifndef __ASSEMBLY__
25#define __ASSEMBLY__                    /* Dirty trick to get only #defines     */
26#endif
27#define __ASM_STUB_PROCESSOR_H__        /* don't include asm/processor.         */
28#include <config.h>
29#undef  __ASSEMBLY__
30#include <environment.h>
31
32/*
33 * Handle HOSTS that have prepended
34 * crap on symbol names, not TARGETS.
35 */
36#if defined(__APPLE__)
37/* Leading underscore on symbols */
38#  define SYM_CHAR "_"
39#else /* No leading character on symbols */
40#  define SYM_CHAR
41#endif
42
43/*
44 * Generate embedded environment table
45 * inside U-Boot image, if needed.
46 */
47#if defined(ENV_IS_EMBEDDED)
48/*
49 * Only put the environment in it's own section when we are building
50 * U-Boot proper.  The host based program "tools/envcrc" does not need
51 * a seperate section.  Note that ENV_CRC is only defined when building
52 * U-Boot itself.
53 */
54#if (defined(CFG_USE_PPCENV) || defined(CONFIG_NAND_U_BOOT)) && \
55     defined(ENV_CRC) /* Environment embedded in U-Boot .ppcenv section */
56/* XXX - This only works with GNU C */
57#  define __PPCENV__ __attribute__ ((section(".ppcenv")))
58#  define __PPCTEXT__ __attribute__ ((section(".text")))
59
60#elif defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
61#  define __PPCENV__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
62#  define __PPCTEXT__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
63
64#else /* Environment is embedded in U-Boot's .text section */
65/* XXX - This only works with GNU C */
66#  define __PPCENV__ __attribute__ ((section(".text")))
67#  define __PPCTEXT__ __attribute__ ((section(".text")))
68#endif
69
70/*
71 * Macros to generate global absolutes.
72 */
73#if defined(__bfin__)
74# define GEN_SET_VALUE(name, value) asm (".set " GEN_SYMNAME(name) ", " GEN_VALUE(value))
75#else
76# define GEN_SET_VALUE(name, value) asm (GEN_SYMNAME(name) " = " GEN_VALUE(value))
77#endif
78#define GEN_SYMNAME(str) SYM_CHAR #str
79#define GEN_VALUE(str) #str
80#define GEN_ABS(name, value) \
81                asm (".globl " GEN_SYMNAME(name)); \
82                GEN_SET_VALUE(name, value)
83
84/*
85 * Macros to transform values
86 * into environment strings.
87 */
88#define XMK_STR(x)      #x
89#define MK_STR(x)       XMK_STR(x)
90
91/*
92 * Check to see if we are building with a
93 * computed CRC.  Otherwise define it as ~0.
94 */
95#if !defined(ENV_CRC)
96#  define ENV_CRC       ~0
97#endif
98
99env_t environment __PPCENV__ = {
100        ENV_CRC,        /* CRC Sum */
101#ifdef CFG_REDUNDAND_ENVIRONMENT
102        1,              /* Flags: valid */
103#endif
104        {
105#if defined(CONFIG_BOOTARGS)
106        "bootargs="     CONFIG_BOOTARGS                 "\0"
107#endif
108#if defined(CONFIG_BOOTCOMMAND)
109        "bootcmd="      CONFIG_BOOTCOMMAND              "\0"
110#endif
111#if defined(CONFIG_RAMBOOTCOMMAND)
112        "ramboot="      CONFIG_RAMBOOTCOMMAND           "\0"
113#endif
114#if defined(CONFIG_NFSBOOTCOMMAND)
115        "nfsboot="      CONFIG_NFSBOOTCOMMAND           "\0"
116#endif
117#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
118        "bootdelay="    MK_STR(CONFIG_BOOTDELAY)        "\0"
119#endif
120#if defined(CONFIG_BAUDRATE) && (CONFIG_BAUDRATE >= 0)
121        "baudrate="     MK_STR(CONFIG_BAUDRATE)         "\0"
122#endif
123#ifdef  CONFIG_LOADS_ECHO
124        "loads_echo="   MK_STR(CONFIG_LOADS_ECHO)       "\0"
125#endif
126#ifdef  CONFIG_ETHADDR
127        "ethaddr="      MK_STR(CONFIG_ETHADDR)          "\0"
128#endif
129#ifdef  CONFIG_ETH1ADDR
130        "eth1addr="     MK_STR(CONFIG_ETH1ADDR)         "\0"
131#endif
132#ifdef  CONFIG_ETH2ADDR
133        "eth2addr="     MK_STR(CONFIG_ETH2ADDR)         "\0"
134#endif
135#ifdef  CONFIG_ETH3ADDR
136        "eth3addr="     MK_STR(CONFIG_ETH3ADDR)         "\0"
137#endif
138#ifdef  CONFIG_ETHPRIME
139        "ethprime="     CONFIG_ETHPRIME                 "\0"
140#endif
141#ifdef  CONFIG_IPADDR
142        "ipaddr="       MK_STR(CONFIG_IPADDR)           "\0"
143#endif
144#ifdef  CONFIG_SERVERIP
145        "serverip="     MK_STR(CONFIG_SERVERIP)         "\0"
146#endif
147#ifdef  CFG_AUTOLOAD
148        "autoload="     CFG_AUTOLOAD                    "\0"
149#endif
150#ifdef  CONFIG_ROOTPATH
151        "rootpath="     MK_STR(CONFIG_ROOTPATH)         "\0"
152#endif
153#ifdef  CONFIG_GATEWAYIP
154        "gatewayip="    MK_STR(CONFIG_GATEWAYIP)        "\0"
155#endif
156#ifdef  CONFIG_NETMASK
157        "netmask="      MK_STR(CONFIG_NETMASK)          "\0"
158#endif
159#ifdef  CONFIG_HOSTNAME
160        "hostname="     MK_STR(CONFIG_HOSTNAME)         "\0"
161#endif
162#ifdef  CONFIG_BOOTFILE
163        "bootfile="     MK_STR(CONFIG_BOOTFILE)         "\0"
164#endif
165#ifdef  CONFIG_LOADADDR
166        "loadaddr="     MK_STR(CONFIG_LOADADDR)         "\0"
167#endif
168#ifdef  CONFIG_PREBOOT
169        "preboot="      CONFIG_PREBOOT                  "\0"
170#endif
171#ifdef  CONFIG_CLOCKS_IN_MHZ
172        "clocks_in_mhz=" "1"                            "\0"
173#endif
174#if defined(CONFIG_PCI_BOOTDELAY) && (CONFIG_PCI_BOOTDELAY > 0)
175        "pcidelay="     MK_STR(CONFIG_PCI_BOOTDELAY)    "\0"
176#endif
177#ifdef  CONFIG_EXTRA_ENV_SETTINGS
178        CONFIG_EXTRA_ENV_SETTINGS
179#endif
180        "\0"            /* Term. env_t.data with 2 NULs */
181        }
182};
183#ifdef CONFIG_ENV_ADDR_REDUND
184env_t redundand_environment __PPCENV__ = {
185        0,              /* CRC Sum: invalid */
186        0,              /* Flags:   invalid */
187        {
188        "\0"
189        }
190};
191#endif  /* CONFIG_ENV_ADDR_REDUND */
192
193/*
194 * These will end up in the .text section
195 * if the environment strings are embedded
196 * in the image.  When this is used for
197 * tools/envcrc, they are placed in the
198 * .data/.sdata section.
199 *
200 */
201unsigned long env_size __PPCTEXT__ = sizeof(env_t);
202
203/*
204 * Add in absolutes.
205 */
206GEN_ABS(env_offset, CONFIG_ENV_OFFSET);
207
208#endif /* ENV_IS_EMBEDDED */
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