[people/ms/u-boot.git] / tools / envcrc.c

/*
 * (C) Copyright 2001
 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
 *
 * 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 <errno.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#ifndef __ASSEMBLY__
#define	__ASSEMBLY__			/* Dirty trick to get only #defines	*/
#endif
#define	__ASM_STUB_PROCESSOR_H__	/* don't include asm/processor.		*/
#include <config.h>
#undef	__ASSEMBLY__

#if defined(CONFIG_ENV_IS_IN_FLASH)
# ifndef  CONFIG_ENV_ADDR
#  define CONFIG_ENV_ADDR	(CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
# endif
# ifndef  CONFIG_ENV_OFFSET
#  define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
# endif
# if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND)
#  define CONFIG_ENV_ADDR_REDUND	(CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND)
# endif
# ifndef  CONFIG_ENV_SIZE
#  define CONFIG_ENV_SIZE	CONFIG_ENV_SECT_SIZE
# endif
# if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND)
#  define CONFIG_ENV_SIZE_REDUND	CONFIG_ENV_SIZE
# endif
# if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
     ((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
#  define ENV_IS_EMBEDDED	1
# endif
# if defined(CONFIG_ENV_ADDR_REDUND) || defined(CONFIG_ENV_OFFSET_REDUND)
#  define CONFIG_SYS_REDUNDAND_ENVIRONMENT	1
# endif
#endif	/* CONFIG_ENV_IS_IN_FLASH */

#if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC)
# define CONFIG_BUILD_ENVCRC 1
#endif

#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
# define ENV_HEADER_SIZE	(sizeof(uint32_t) + 1)
#else
# define ENV_HEADER_SIZE	(sizeof(uint32_t))
#endif

#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)


#ifdef CONFIG_BUILD_ENVCRC
# include <environment.h>
extern unsigned int env_size;
extern env_t environment;
#endif	/* CONFIG_BUILD_ENVCRC */

extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int);

int main (int argc, char **argv)
{
#ifdef CONFIG_BUILD_ENVCRC
	unsigned char pad = 0x00;
	uint32_t crc;
	unsigned char *envptr = (unsigned char *)&environment,
		*dataptr = envptr + ENV_HEADER_SIZE;
	unsigned int datasize = ENV_SIZE;
	unsigned int eoe;

	if (argv[1] && !strncmp(argv[1], "--binary", 8)) {
		int ipad = 0xff;
		if (argv[1][8] == '=')
			sscanf(argv[1] + 9, "%i", &ipad);
		pad = ipad;
	}

	if (pad) {
		/* find the end of env */
		for (eoe = 0; eoe < datasize - 1; ++eoe)
			if (!dataptr[eoe] && !dataptr[eoe+1]) {
				eoe += 2;
				break;
			}
		if (eoe < datasize - 1)
			memset(dataptr + eoe, pad, datasize - eoe);
	}

	crc = crc32 (0, dataptr, datasize);

	/* Check if verbose mode is activated passing a parameter to the program */
	if (argc > 1) {
		if (!strncmp(argv[1], "--binary", 8)) {
			int le = (argc > 2 ? !strcmp(argv[2], "le") : 1);
			size_t i, start, end, step;
			if (le) {
				start = 0;
				end = ENV_HEADER_SIZE;
				step = 1;
			} else {
				start = ENV_HEADER_SIZE - 1;
				end = -1;
				step = -1;
			}
			for (i = start; i != end; i += step)
				printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8));
			if (fwrite(dataptr, 1, datasize, stdout) != datasize)
				fprintf(stderr, "fwrite() failed: %s\n", strerror(errno));
		} else {
			printf("CRC32 from offset %08X to %08X of environment = %08X\n",
				(unsigned int) (dataptr - envptr),
				(unsigned int) (dataptr - envptr) + datasize,
				crc);
		}
	} else {
		printf ("0x%08X\n", crc);
	}
#else
	printf ("0\n");
#endif
	return EXIT_SUCCESS;
}
Commit	Line	Data
fe57bb19 WD	1	/*
	2	* (C) Copyright 2001
	3	* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
	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
f67066b6	24	#include <errno.h>
fe57bb19	25	#include <stdio.h>
89cdab78	26	#include <stdint.h>
fe57bb19	27	#include <stdlib.h>
837db3d8	28	#include <string.h>
fe57bb19 WD	29	#include <unistd.h>
fe57bb19 WD	30
dc17fb6d WD	31	#ifndef __ASSEMBLY__
	32	#define __ASSEMBLY__ /* Dirty trick to get only #defines */
	33	#endif
	34	#define __ASM_STUB_PROCESSOR_H__ /* don't include asm/processor. */
fe57bb19 WD	35	#include <config.h>
	36	#undef __ASSEMBLY__
	37
5a1aceb0	38	#if defined(CONFIG_ENV_IS_IN_FLASH)
0e8d1586	39	# ifndef CONFIG_ENV_ADDR
6d0f6bcf	40	# define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
fe57bb19	41	# endif
0e8d1586	42	# ifndef CONFIG_ENV_OFFSET
6d0f6bcf	43	# define CONFIG_ENV_OFFSET (CONFIG_ENV_ADDR - CONFIG_SYS_FLASH_BASE)
fe57bb19	44	# endif
0e8d1586	45	# if !defined(CONFIG_ENV_ADDR_REDUND) && defined(CONFIG_ENV_OFFSET_REDUND)
6d0f6bcf	46	# define CONFIG_ENV_ADDR_REDUND (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET_REDUND)
43d9616c	47	# endif
0e8d1586 JCPV	48	# ifndef CONFIG_ENV_SIZE
0e8d1586 JCPV	49	# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
fe57bb19	50	# endif
0e8d1586 JCPV	51	# if defined(CONFIG_ENV_ADDR_REDUND) && !defined(CONFIG_ENV_SIZE_REDUND)
0e8d1586 JCPV	52	# define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE
43d9616c	53	# endif
a747a7f3 WD	54	# if (CONFIG_ENV_ADDR >= CONFIG_SYS_MONITOR_BASE) && \
	55	((CONFIG_ENV_ADDR + CONFIG_ENV_SIZE) <= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN))
	56	# define ENV_IS_EMBEDDED 1
	57	# endif
0e8d1586	58	# if defined(CONFIG_ENV_ADDR_REDUND) \|\| defined(CONFIG_ENV_OFFSET_REDUND)
6d0f6bcf	59	# define CONFIG_SYS_REDUNDAND_ENVIRONMENT 1
fe57bb19	60	# endif
5a1aceb0	61	#endif /* CONFIG_ENV_IS_IN_FLASH */
fe57bb19	62
c3eb3fe4 MF	63	#if defined(ENV_IS_EMBEDDED) && !defined(CONFIG_BUILD_ENVCRC)
	64	# define CONFIG_BUILD_ENVCRC 1
	65	#endif
	66
6d0f6bcf	67	#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
89cdab78	68	# define ENV_HEADER_SIZE (sizeof(uint32_t) + 1)
43d9616c	69	#else
89cdab78	70	# define ENV_HEADER_SIZE (sizeof(uint32_t))
43d9616c WD	71	#endif
43d9616c WD	72
0e8d1586	73	#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
43d9616c WD	74
43d9616c WD	75
c3eb3fe4	76	#ifdef CONFIG_BUILD_ENVCRC
73f94ed4	77	# include <environment.h>
fe57bb19	78	extern unsigned int env_size;
994bc671	79	extern env_t environment;
c3eb3fe4	80	#endif /* CONFIG_BUILD_ENVCRC */
fe57bb19	81
73f94ed4 IG	82	extern uint32_t crc32 (uint32_t, const unsigned char *, unsigned int);
73f94ed4 IG	83
fe57bb19 WD	84	int main (int argc, char **argv)
fe57bb19 WD	85	{
c3eb3fe4	86	#ifdef CONFIG_BUILD_ENVCRC
837db3d8	87	unsigned char pad = 0x00;
89cdab78	88	uint32_t crc;
994bc671	89	unsigned char envptr = (unsigned char )&environment,
dc17fb6d WD	90	*dataptr = envptr + ENV_HEADER_SIZE;
dc17fb6d WD	91	unsigned int datasize = ENV_SIZE;
837db3d8 MF	92	unsigned int eoe;
	93
	94	if (argv[1] && !strncmp(argv[1], "--binary", 8)) {
	95	int ipad = 0xff;
	96	if (argv[1][8] == '=')
	97	sscanf(argv[1] + 9, "%i", &ipad);
	98	pad = ipad;
	99	}
	100
	101	if (pad) {
	102	/* find the end of env */
	103	for (eoe = 0; eoe < datasize - 1; ++eoe)
	104	if (!dataptr[eoe] && !dataptr[eoe+1]) {
	105	eoe += 2;
	106	break;
	107	}
	108	if (eoe < datasize - 1)
	109	memset(dataptr + eoe, pad, datasize - eoe);
	110	}
fe57bb19	111
dc17fb6d	112	crc = crc32 (0, dataptr, datasize);
fe57bb19	113
dc17fb6d WD	114	/* Check if verbose mode is activated passing a parameter to the program */
dc17fb6d WD	115	if (argc > 1) {
837db3d8 MF	116	if (!strncmp(argv[1], "--binary", 8)) {
	117	int le = (argc > 2 ? !strcmp(argv[2], "le") : 1);
	118	size_t i, start, end, step;
	119	if (le) {
	120	start = 0;
	121	end = ENV_HEADER_SIZE;
	122	step = 1;
	123	} else {
	124	start = ENV_HEADER_SIZE - 1;
	125	end = -1;
	126	step = -1;
	127	}
	128	for (i = start; i != end; i += step)
	129	printf("%c", (crc & (0xFF << (i * 8))) >> (i * 8));
f67066b6 MF	130	if (fwrite(dataptr, 1, datasize, stdout) != datasize)
f67066b6 MF	131	fprintf(stderr, "fwrite() failed: %s\n", strerror(errno));
837db3d8 MF	132	} else {
	133	printf("CRC32 from offset %08X to %08X of environment = %08X\n",
	134	(unsigned int) (dataptr - envptr),
	135	(unsigned int) (dataptr - envptr) + datasize,
	136	crc);
	137	}
dc17fb6d WD	138	} else {
	139	printf ("0x%08X\n", crc);
	140	}
a747a7f3 WD	141	#else
	142	printf ("0\n");
	143	#endif
dc17fb6d	144	return EXIT_SUCCESS;
fe57bb19	145	}