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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
Wolfgang Denkdc17fb62005-08-03 22:32:02 +020024#ifndef __ASSEMBLY__
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000025#define __ASSEMBLY__ /* Dirty trick to get only #defines */
Wolfgang Denkdc17fb62005-08-03 22:32:02 +020026#endif
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000027#define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
wdenkc6097192002-11-03 00:24:07 +000028#include <config.h>
Wolfgang Denkdc17fb62005-08-03 22:32:02 +020029#undef __ASSEMBLY__
wdenkc6097192002-11-03 00:24:07 +000030#include <environment.h>
Marek Vasut5368c552012-09-23 17:41:24 +020031#include <linux/stringify.h>
wdenkc6097192002-11-03 00:24:07 +000032
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000033/* Handle HOSTS that have prepended crap on symbol names, not TARGETS. */
wdenkc6097192002-11-03 00:24:07 +000034#if defined(__APPLE__)
35/* Leading underscore on symbols */
36# define SYM_CHAR "_"
37#else /* No leading character on symbols */
38# define SYM_CHAR
39#endif
40
41/*
Wolfgang Denka747a7f2009-10-27 00:03:32 +010042 * Generate embedded environment table
43 * inside U-Boot image, if needed.
44 */
Mike Frysingerc3eb3fe2011-07-08 10:44:25 +000045#if defined(ENV_IS_EMBEDDED) || defined(CONFIG_BUILD_ENVCRC)
Wolfgang Denka747a7f2009-10-27 00:03:32 +010046/*
wdenkc6097192002-11-03 00:24:07 +000047 * Only put the environment in it's own section when we are building
48 * U-Boot proper. The host based program "tools/envcrc" does not need
49 * a seperate section. Note that ENV_CRC is only defined when building
50 * U-Boot itself.
51 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020052#if (defined(CONFIG_SYS_USE_PPCENV) || defined(CONFIG_NAND_U_BOOT)) && \
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000053 defined(ENV_CRC) /* Environment embedded in U-Boot .ppcenv section */
wdenkc6097192002-11-03 00:24:07 +000054/* XXX - This only works with GNU C */
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000055# define __PPCENV__ __attribute__ ((section(".ppcenv")))
56# define __PPCTEXT__ __attribute__ ((section(".text")))
wdenkc6097192002-11-03 00:24:07 +000057
58#elif defined(USE_HOSTCC) /* Native for 'tools/envcrc' */
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000059# define __PPCENV__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
60# define __PPCTEXT__ /*XXX DO_NOT_DEL_THIS_COMMENT*/
wdenkc6097192002-11-03 00:24:07 +000061
62#else /* Environment is embedded in U-Boot's .text section */
63/* XXX - This only works with GNU C */
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000064# define __PPCENV__ __attribute__ ((section(".text")))
65# define __PPCTEXT__ __attribute__ ((section(".text")))
wdenkc6097192002-11-03 00:24:07 +000066#endif
67
68/*
69 * Macros to generate global absolutes.
70 */
Mike Frysinger4087bc82008-02-04 19:26:54 -050071#if defined(__bfin__)
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000072# define GEN_SET_VALUE(name, value) \
73 asm(".set " GEN_SYMNAME(name) ", " GEN_VALUE(value))
Mike Frysinger4087bc82008-02-04 19:26:54 -050074#else
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000075# define GEN_SET_VALUE(name, value) \
76 asm(GEN_SYMNAME(name) " = " GEN_VALUE(value))
Mike Frysinger4087bc82008-02-04 19:26:54 -050077#endif
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000078#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)
wdenkc6097192002-11-03 00:24:07 +000083
84/*
wdenkc6097192002-11-03 00:24:07 +000085 * Check to see if we are building with a
86 * computed CRC. Otherwise define it as ~0.
87 */
88#if !defined(ENV_CRC)
Igor Grinbergbd2a23a2011-11-07 01:14:06 +000089# define ENV_CRC (~0)
wdenkc6097192002-11-03 00:24:07 +000090#endif
91
Joe Hershbergerddd84182012-10-12 08:48:51 +000092#define DEFAULT_ENV_INSTANCE_EMBEDDED
93#include <env_default.h>
94
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020095#ifdef CONFIG_ENV_ADDR_REDUND
wdenkc6097192002-11-03 00:24:07 +000096env_t redundand_environment __PPCENV__ = {
97 0, /* CRC Sum: invalid */
98 0, /* Flags: invalid */
99 {
100 "\0"
101 }
102};
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200103#endif /* CONFIG_ENV_ADDR_REDUND */
wdenkc6097192002-11-03 00:24:07 +0000104
105/*
106 * These will end up in the .text section
107 * if the environment strings are embedded
108 * in the image. When this is used for
109 * tools/envcrc, they are placed in the
110 * .data/.sdata section.
111 *
112 */
113unsigned long env_size __PPCTEXT__ = sizeof(env_t);
114
115/*
116 * Add in absolutes.
117 */
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200118GEN_ABS(env_offset, CONFIG_ENV_OFFSET);
Wolfgang Denka747a7f2009-10-27 00:03:32 +0100119
120#endif /* ENV_IS_EMBEDDED */