[people/ms/u-boot.git] / common / env_remote.c

/*
 * (C) Copyright 2011-2012 Freescale Semiconductor, Inc.
 *
 * 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
 */

/* #define DEBUG */

#include <common.h>
#include <command.h>
#include <environment.h>
#include <linux/stddef.h>

char *env_name_spec = "Remote";

#ifdef ENV_IS_EMBEDDED
env_t *env_ptr = &environment;
#else /* ! ENV_IS_EMBEDDED */
env_t *env_ptr = (env_t *)CONFIG_ENV_ADDR;
#endif /* ENV_IS_EMBEDDED */

DECLARE_GLOBAL_DATA_PTR;

#if !defined(CONFIG_ENV_OFFSET)
#define CONFIG_ENV_OFFSET 0
#endif

int env_init(void)
{
	if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
		gd->env_addr = (ulong)&(env_ptr->data);
		gd->env_valid = 1;
		return 0;
	}

	gd->env_addr = (ulong)default_environment;
	gd->env_valid = 0;
	return 0;
}

#ifdef CONFIG_CMD_SAVEENV
int saveenv(void)
{
#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
	printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n");
	return 1;
#else
	return 0;
#endif
}
#endif /* CONFIG_CMD_SAVEENV */

void env_relocate_spec(void)
{
#ifndef ENV_IS_EMBEDDED
	env_import((char *)env_ptr, 1);
#endif
}
Commit	Line	Data
0a85a9e7 LG	1	/*
	2	* (C) Copyright 2011-2012 Freescale Semiconductor, Inc.
	3	*
	4	* See file CREDITS for list of people who contributed to this
	5	* project.
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License as
	9	* published by the Free Software Foundation; either version 2 of
	10	* the License, or (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	20	* MA 02111-1307 USA
	21	*/
	22
	23	/* #define DEBUG */
	24
	25	#include <common.h>
	26	#include <command.h>
	27	#include <environment.h>
	28	#include <linux/stddef.h>
	29
	30	char *env_name_spec = "Remote";
	31
	32	#ifdef ENV_IS_EMBEDDED
	33	env_t *env_ptr = &environment;
	34	#else /* ! ENV_IS_EMBEDDED */
	35	env_t env_ptr = (env_t )CONFIG_ENV_ADDR;
	36	#endif /* ENV_IS_EMBEDDED */
	37
	38	DECLARE_GLOBAL_DATA_PTR;
	39
	40	#if !defined(CONFIG_ENV_OFFSET)
	41	#define CONFIG_ENV_OFFSET 0
	42	#endif
	43
0a85a9e7 LG	44	int env_init(void)
	45	{
	46	if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
	47	gd->env_addr = (ulong)&(env_ptr->data);
	48	gd->env_valid = 1;
	49	return 0;
	50	}
	51
	52	gd->env_addr = (ulong)default_environment;
	53	gd->env_valid = 0;
	54	return 0;
	55	}
	56
	57	#ifdef CONFIG_CMD_SAVEENV
	58	int saveenv(void)
	59	{
461632bd LG	60	#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
461632bd LG	61	printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n");
0a85a9e7 LG	62	return 1;
	63	#else
	64	return 0;
	65	#endif
	66	}
	67	#endif /* CONFIG_CMD_SAVEENV */
	68
	69	void env_relocate_spec(void)
	70	{
	71	#ifndef ENV_IS_EMBEDDED
	72	env_import((char *)env_ptr, 1);
	73	#endif
	74	}