u-boot/include/environment.h
Mike Frysinger 89cdab788f crc32: use uint32_t rather than unsigned long
The envcrc.c does sizeof(unsigned long) when calculating the crc, but
this is done with the build toolchain instead of the target tool
chain, so if the build is a 64bit system but the target is 32bits,
the size will obviously be wrong. This converts all unsigned long
stuff related to crc32 to uint32_t types. Compile tested only: output
of ./tools/envcrc when run on a 32bit build system matches that of a
64bit build system.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-04-24 13:18:17 +02:00

110 lines
3.4 KiB
C

/*
* (C) Copyright 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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
*/
#ifndef _ENVIRONMENT_H_
#define _ENVIRONMENT_H_ 1
/**************************************************************************
*
* The "environment" is stored as a list of '\0' terminated
* "name=value" strings. The end of the list is marked by a double
* '\0'. New entries are always added at the end. Deleting an entry
* shifts the remaining entries to the front. Replacing an entry is a
* combination of deleting the old value and adding the new one.
*
* The environment is preceeded by a 32 bit CRC over the data part.
*
**************************************************************************
*/
#if defined(CFG_ENV_IS_IN_FLASH)
# ifndef CFG_ENV_ADDR
# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
# endif
# ifndef CFG_ENV_OFFSET
# define CFG_ENV_OFFSET (CFG_ENV_ADDR - CFG_FLASH_BASE)
# endif
# if !defined(CFG_ENV_ADDR_REDUND) && defined(CFG_ENV_OFFSET_REDUND)
# define CFG_ENV_ADDR_REDUND (CFG_FLASH_BASE + CFG_ENV_OFFSET_REDUND)
# endif
# if defined(CFG_ENV_SECT_SIZE) || defined(CFG_ENV_SIZE)
# ifndef CFG_ENV_SECT_SIZE
# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
# endif
# ifndef CFG_ENV_SIZE
# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
# endif
# else
# error "Both CFG_ENV_SECT_SIZE and CFG_ENV_SIZE undefined"
# endif
# if defined(CFG_ENV_ADDR_REDUND) && !defined(CFG_ENV_SIZE_REDUND)
# define CFG_ENV_SIZE_REDUND CFG_ENV_SIZE
# endif
# if (CFG_ENV_ADDR >= CFG_MONITOR_BASE) && \
(CFG_ENV_ADDR+CFG_ENV_SIZE) <= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)
# define ENV_IS_EMBEDDED 1
# endif
# if defined(CFG_ENV_ADDR_REDUND) || defined(CFG_ENV_OFFSET_REDUND)
# define CFG_REDUNDAND_ENVIRONMENT 1
# endif
#endif /* CFG_ENV_IS_IN_FLASH */
#if defined(CFG_ENV_IS_IN_NAND)
# ifndef CFG_ENV_OFFSET
# error "Need to define CFG_ENV_OFFSET when using CFG_ENV_IS_IN_NAND"
# endif
# ifndef CFG_ENV_SIZE
# error "Need to define CFG_ENV_SIZE when using CFG_ENV_IS_IN_NAND"
# endif
# ifdef CFG_ENV_OFFSET_REDUND
# define CFG_REDUNDAND_ENVIRONMENT
# endif
# ifdef CFG_ENV_IS_EMBEDDED
# define ENV_IS_EMBEDDED 1
# endif
#endif /* CFG_ENV_IS_IN_NAND */
#ifdef USE_HOSTCC
# include <stdint.h>
#else
# include <linux/types.h>
#endif
#ifdef CFG_REDUNDAND_ENVIRONMENT
# define ENV_HEADER_SIZE (sizeof(uint32_t) + 1)
#else
# define ENV_HEADER_SIZE (sizeof(uint32_t))
#endif
#define ENV_SIZE (CFG_ENV_SIZE - ENV_HEADER_SIZE)
typedef struct environment_s {
uint32_t crc; /* CRC32 over data bytes */
#ifdef CFG_REDUNDAND_ENVIRONMENT
unsigned char flags; /* active/obsolete flags */
#endif
unsigned char data[ENV_SIZE]; /* Environment data */
} env_t;
#endif /* _ENVIRONMENT_H_ */