[thirdparty/u-boot.git] / env / remote.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2011-2012 Freescale Semiconductor, Inc.
 */

/* #define DEBUG */

#include <common.h>
#include <command.h>
#include <env_internal.h>
#include <asm/global_data.h>
#include <linux/stddef.h>
#include <u-boot/crc.h>

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

DECLARE_GLOBAL_DATA_PTR;

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

	return -ENOENT;
}

#ifdef CONFIG_CMD_SAVEENV
static int env_remote_save(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 */

static int env_remote_load(void)
{
#ifndef ENV_IS_EMBEDDED
	return env_import((char *)env_ptr, 1, H_EXTERNAL);
#endif

	return 0;
}

U_BOOT_ENV_LOCATION(remote) = {
	.location	= ENVL_REMOTE,
	ENV_NAME("Remote")
	.load		= env_remote_load,
	.save		= env_save_ptr(env_remote_save),
	.init		= env_remote_init,
};
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
0a85a9e7 LG	2	/*
0a85a9e7 LG	3	* (C) Copyright 2011-2012 Freescale Semiconductor, Inc.
0a85a9e7 LG	4	*/
	5
	6	/* #define DEBUG */
	7
	8	#include <common.h>
	9	#include <command.h>
f3998fdc	10	#include <env_internal.h>
401d1c4f	11	#include <asm/global_data.h>
0a85a9e7	12	#include <linux/stddef.h>
3db71108	13	#include <u-boot/crc.h>
0a85a9e7	14
0a85a9e7	15	#ifdef ENV_IS_EMBEDDED
46d9d1c3	16	static env_t *env_ptr = &environment;
0a85a9e7	17	#else /* ! ENV_IS_EMBEDDED */
46d9d1c3	18	static env_t env_ptr = (env_t )CONFIG_ENV_ADDR;
0a85a9e7 LG	19	#endif /* ENV_IS_EMBEDDED */
	20
	21	DECLARE_GLOBAL_DATA_PTR;
	22
e5bce247	23	static int env_remote_init(void)
0a85a9e7 LG	24	{
	25	if (crc32(0, env_ptr->data, ENV_SIZE) == env_ptr->crc) {
	26	gd->env_addr = (ulong)&(env_ptr->data);
203e94f6	27	gd->env_valid = ENV_VALID;
0a85a9e7 LG	28	return 0;
	29	}
	30
7938822a	31	return -ENOENT;
0a85a9e7 LG	32	}
	33
	34	#ifdef CONFIG_CMD_SAVEENV
e5bce247	35	static int env_remote_save(void)
0a85a9e7	36	{
461632bd LG	37	#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
461632bd LG	38	printf("Can not support the 'saveenv' when boot from SRIO or PCIE!\n");
0a85a9e7 LG	39	return 1;
	40	#else
	41	return 0;
	42	#endif
	43	}
	44	#endif /* CONFIG_CMD_SAVEENV */
	45
c5951991	46	static int env_remote_load(void)
0a85a9e7 LG	47	{
0a85a9e7 LG	48	#ifndef ENV_IS_EMBEDDED
890feeca	49	return env_import((char *)env_ptr, 1, H_EXTERNAL);
0a85a9e7	50	#endif
c5951991 SG	51
c5951991 SG	52	return 0;
0a85a9e7	53	}
4415f1d1 SG	54
	55	U_BOOT_ENV_LOCATION(remote) = {
	56	.location = ENVL_REMOTE,
ac358beb	57	ENV_NAME("Remote")
e5bce247 SG	58	.load = env_remote_load,
	59	.save = env_save_ptr(env_remote_save),
	60	.init = env_remote_init,
4415f1d1	61	};