[J-u-boot.git] / common / env_sf.c

/*
 * (C) Copyright 2000-2010
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Andreas Heppel <[email protected]>
 *
 * (C) Copyright 2008 Atmel Corporation
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <environment.h>
#include <malloc.h>
#include <spi_flash.h>
#include <search.h>
#include <errno.h>

#ifndef CONFIG_ENV_SPI_BUS
# define CONFIG_ENV_SPI_BUS	0
#endif
#ifndef CONFIG_ENV_SPI_CS
# define CONFIG_ENV_SPI_CS	0
#endif
#ifndef CONFIG_ENV_SPI_MAX_HZ
# define CONFIG_ENV_SPI_MAX_HZ	1000000
#endif
#ifndef CONFIG_ENV_SPI_MODE
# define CONFIG_ENV_SPI_MODE	SPI_MODE_3
#endif

#ifdef CONFIG_ENV_OFFSET_REDUND
static ulong env_offset		= CONFIG_ENV_OFFSET;
static ulong env_new_offset	= CONFIG_ENV_OFFSET_REDUND;

#define ACTIVE_FLAG	1
#define OBSOLETE_FLAG	0
#endif /* CONFIG_ENV_OFFSET_REDUND */

DECLARE_GLOBAL_DATA_PTR;

char *env_name_spec = "SPI Flash";

static struct spi_flash *env_flash;

#if defined(CONFIG_ENV_OFFSET_REDUND)
int saveenv(void)
{
	env_t	env_new;
	char	*saved_buffer = NULL, flag = OBSOLETE_FLAG;
	u32	saved_size, saved_offset, sector = 1;
	int	ret;

	if (!env_flash) {
		env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS,
			CONFIG_ENV_SPI_CS,
			CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
		if (!env_flash) {
			set_default_env("!spi_flash_probe() failed");
			return 1;
		}
	}

	ret = env_export(&env_new);
	if (ret)
		return ret;
	env_new.flags	= ACTIVE_FLAG;

	if (gd->env_valid == 1) {
		env_new_offset = CONFIG_ENV_OFFSET_REDUND;
		env_offset = CONFIG_ENV_OFFSET;
	} else {
		env_new_offset = CONFIG_ENV_OFFSET;
		env_offset = CONFIG_ENV_OFFSET_REDUND;
	}

	/* Is the sector larger than the env (i.e. embedded) */
	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
		saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
		saved_offset = env_new_offset + CONFIG_ENV_SIZE;
		saved_buffer = malloc(saved_size);
		if (!saved_buffer) {
			ret = 1;
			goto done;
		}
		ret = spi_flash_read(env_flash, saved_offset,
					saved_size, saved_buffer);
		if (ret)
			goto done;
	}

	if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) {
		sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE;
		if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE)
			sector++;
	}

	puts("Erasing SPI flash...");
	ret = spi_flash_erase(env_flash, env_new_offset,
				sector * CONFIG_ENV_SECT_SIZE);
	if (ret)
		goto done;

	puts("Writing to SPI flash...");

	ret = spi_flash_write(env_flash, env_new_offset,
		CONFIG_ENV_SIZE, &env_new);
	if (ret)
		goto done;

	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
		ret = spi_flash_write(env_flash, saved_offset,
					saved_size, saved_buffer);
		if (ret)
			goto done;
	}

	ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags),
				sizeof(env_new.flags), &flag);
	if (ret)
		goto done;

	puts("done\n");

	gd->env_valid = gd->env_valid == 2 ? 1 : 2;

	printf("Valid environment: %d\n", (int)gd->env_valid);

 done:
	if (saved_buffer)
		free(saved_buffer);

	return ret;
}

void env_relocate_spec(void)
{
	int ret;
	int crc1_ok = 0, crc2_ok = 0;
	env_t *tmp_env1 = NULL;
	env_t *tmp_env2 = NULL;
	env_t *ep = NULL;

	tmp_env1 = (env_t *)malloc(CONFIG_ENV_SIZE);
	tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE);

	if (!tmp_env1 || !tmp_env2) {
		set_default_env("!malloc() failed");
		goto out;
	}

	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
			CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
	if (!env_flash) {
		set_default_env("!spi_flash_probe() failed");
		goto out;
	}

	ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET,
				CONFIG_ENV_SIZE, tmp_env1);
	if (ret) {
		set_default_env("!spi_flash_read() failed");
		goto err_read;
	}

	if (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc)
		crc1_ok = 1;

	ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET_REDUND,
				CONFIG_ENV_SIZE, tmp_env2);
	if (!ret) {
		if (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc)
			crc2_ok = 1;
	}

	if (!crc1_ok && !crc2_ok) {
		set_default_env("!bad CRC");
		goto err_read;
	} else if (crc1_ok && !crc2_ok) {
		gd->env_valid = 1;
	} else if (!crc1_ok && crc2_ok) {
		gd->env_valid = 2;
	} else if (tmp_env1->flags == ACTIVE_FLAG &&
		   tmp_env2->flags == OBSOLETE_FLAG) {
		gd->env_valid = 1;
	} else if (tmp_env1->flags == OBSOLETE_FLAG &&
		   tmp_env2->flags == ACTIVE_FLAG) {
		gd->env_valid = 2;
	} else if (tmp_env1->flags == tmp_env2->flags) {
		gd->env_valid = 2;
	} else if (tmp_env1->flags == 0xFF) {
		gd->env_valid = 2;
	} else {
		/*
		 * this differs from code in env_flash.c, but I think a sane
		 * default path is desirable.
		 */
		gd->env_valid = 2;
	}

	if (gd->env_valid == 1)
		ep = tmp_env1;
	else
		ep = tmp_env2;

	ret = env_import((char *)ep, 0);
	if (!ret) {
		error("Cannot import environment: errno = %d\n", errno);
		set_default_env("env_import failed");
	}

err_read:
	spi_flash_free(env_flash);
	env_flash = NULL;
out:
	free(tmp_env1);
	free(tmp_env2);
}
#else
int saveenv(void)
{
	u32	saved_size, saved_offset, sector = 1;
	char	*saved_buffer = NULL;
	int	ret = 1;
	env_t	env_new;

	if (!env_flash) {
		env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS,
			CONFIG_ENV_SPI_CS,
			CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
		if (!env_flash) {
			set_default_env("!spi_flash_probe() failed");
			return 1;
		}
	}

	/* Is the sector larger than the env (i.e. embedded) */
	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
		saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
		saved_offset = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE;
		saved_buffer = malloc(saved_size);
		if (!saved_buffer)
			goto done;

		ret = spi_flash_read(env_flash, saved_offset,
			saved_size, saved_buffer);
		if (ret)
			goto done;
	}

	if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) {
		sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE;
		if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE)
			sector++;
	}

	ret = env_export(&env_new);
	if (ret)
		goto done;

	puts("Erasing SPI flash...");
	ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET,
		sector * CONFIG_ENV_SECT_SIZE);
	if (ret)
		goto done;

	puts("Writing to SPI flash...");
	ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET,
		CONFIG_ENV_SIZE, &env_new);
	if (ret)
		goto done;

	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
		ret = spi_flash_write(env_flash, saved_offset,
			saved_size, saved_buffer);
		if (ret)
			goto done;
	}

	ret = 0;
	puts("done\n");

 done:
	if (saved_buffer)
		free(saved_buffer);

	return ret;
}

void env_relocate_spec(void)
{
	int ret;
	char *buf = NULL;

	buf = (char *)malloc(CONFIG_ENV_SIZE);
	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
			CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
	if (!env_flash) {
		set_default_env("!spi_flash_probe() failed");
		if (buf)
			free(buf);
		return;
	}

	ret = spi_flash_read(env_flash,
		CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf);
	if (ret) {
		set_default_env("!spi_flash_read() failed");
		goto out;
	}

	ret = env_import(buf, 1);
	if (ret)
		gd->env_valid = 1;
out:
	spi_flash_free(env_flash);
	if (buf)
		free(buf);
	env_flash = NULL;
}
#endif

int env_init(void)
{
	/* SPI flash isn't usable before relocation */
	gd->env_addr = (ulong)&default_environment[0];
	gd->env_valid = 1;

	return 0;
}
Commit	Line	Data
8c66497e	1	/*
ea882baf	2	* (C) Copyright 2000-2010
8c66497e HS	3	* Wolfgang Denk, DENX Software Engineering, [email protected].
	4	*
	5	* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
	6	* Andreas Heppel <[email protected]>
	7	*
	8	* (C) Copyright 2008 Atmel Corporation
	9	*
402ba1e3	10	* SPDX-License-Identifier: GPL-2.0+
8c66497e HS	11	*/
8c66497e HS	12	#include <common.h>
8c66497e	13	#include <environment.h>
5b3375ac	14	#include <malloc.h>
8c66497e	15	#include <spi_flash.h>
ea882baf WD	16	#include <search.h>
ea882baf WD	17	#include <errno.h>
8c66497e	18
0e8d1586 JCPV	19	#ifndef CONFIG_ENV_SPI_BUS
0e8d1586 JCPV	20	# define CONFIG_ENV_SPI_BUS 0
8c66497e	21	#endif
0e8d1586	22	#ifndef CONFIG_ENV_SPI_CS
eb58a7fc	23	# define CONFIG_ENV_SPI_CS 0
8c66497e	24	#endif
0e8d1586 JCPV	25	#ifndef CONFIG_ENV_SPI_MAX_HZ
0e8d1586 JCPV	26	# define CONFIG_ENV_SPI_MAX_HZ 1000000
8c66497e	27	#endif
0e8d1586 JCPV	28	#ifndef CONFIG_ENV_SPI_MODE
0e8d1586 JCPV	29	# define CONFIG_ENV_SPI_MODE SPI_MODE_3
8c66497e HS	30	#endif
8c66497e HS	31
7319bcaf	32	#ifdef CONFIG_ENV_OFFSET_REDUND
eb58a7fc IG	33	static ulong env_offset = CONFIG_ENV_OFFSET;
eb58a7fc IG	34	static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND;
7319bcaf	35
eb58a7fc IG	36	#define ACTIVE_FLAG 1
eb58a7fc IG	37	#define OBSOLETE_FLAG 0
a3110f01	38	#endif /* CONFIG_ENV_OFFSET_REDUND */
7319bcaf	39
8c66497e HS	40	DECLARE_GLOBAL_DATA_PTR;
8c66497e HS	41
eb58a7fc	42	char *env_name_spec = "SPI Flash";
8c66497e HS	43
	44	static struct spi_flash *env_flash;
	45
7319bcaf	46	#if defined(CONFIG_ENV_OFFSET_REDUND)
7319bcaf WW	47	int saveenv(void)
7319bcaf WW	48	{
cd0f4fa1	49	env_t env_new;
7ce1526e	50	char *saved_buffer = NULL, flag = OBSOLETE_FLAG;
eb58a7fc	51	u32 saved_size, saved_offset, sector = 1;
ea882baf	52	int ret;
7319bcaf WW	53
7319bcaf WW	54	if (!env_flash) {
a3110f01 SB	55	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS,
	56	CONFIG_ENV_SPI_CS,
	57	CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
	58	if (!env_flash) {
	59	set_default_env("!spi_flash_probe() failed");
	60	return 1;
	61	}
7319bcaf WW	62	}
7319bcaf WW	63
7ce1526e MV	64	ret = env_export(&env_new);
	65	if (ret)
	66	return ret;
cd0f4fa1	67	env_new.flags = ACTIVE_FLAG;
ea882baf	68
a3110f01 SB	69	if (gd->env_valid == 1) {
	70	env_new_offset = CONFIG_ENV_OFFSET_REDUND;
	71	env_offset = CONFIG_ENV_OFFSET;
	72	} else {
	73	env_new_offset = CONFIG_ENV_OFFSET;
	74	env_offset = CONFIG_ENV_OFFSET_REDUND;
	75	}
	76
7319bcaf WW	77	/* Is the sector larger than the env (i.e. embedded) */
	78	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
	79	saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
	80	saved_offset = env_new_offset + CONFIG_ENV_SIZE;
	81	saved_buffer = malloc(saved_size);
	82	if (!saved_buffer) {
	83	ret = 1;
	84	goto done;
	85	}
	86	ret = spi_flash_read(env_flash, saved_offset,
	87	saved_size, saved_buffer);
	88	if (ret)
	89	goto done;
	90	}
	91
	92	if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) {
	93	sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE;
	94	if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE)
	95	sector++;
	96	}
	97
	98	puts("Erasing SPI flash...");
	99	ret = spi_flash_erase(env_flash, env_new_offset,
	100	sector * CONFIG_ENV_SECT_SIZE);
	101	if (ret)
	102	goto done;
	103
	104	puts("Writing to SPI flash...");
7319bcaf	105
a3110f01	106	ret = spi_flash_write(env_flash, env_new_offset,
cd0f4fa1	107	CONFIG_ENV_SIZE, &env_new);
7319bcaf WW	108	if (ret)
	109	goto done;
	110
	111	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
	112	ret = spi_flash_write(env_flash, saved_offset,
	113	saved_size, saved_buffer);
	114	if (ret)
	115	goto done;
	116	}
	117
eb58a7fc	118	ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags),
cd0f4fa1	119	sizeof(env_new.flags), &flag);
a3110f01 SB	120	if (ret)
a3110f01 SB	121	goto done;
7319bcaf	122
7319bcaf WW	123	puts("done\n");
7319bcaf WW	124
eb58a7fc	125	gd->env_valid = gd->env_valid == 2 ? 1 : 2;
a3110f01	126
2dc55d9e	127	printf("Valid environment: %d\n", (int)gd->env_valid);
a3110f01	128
7319bcaf WW	129	done:
	130	if (saved_buffer)
	131	free(saved_buffer);
eb58a7fc	132
7319bcaf WW	133	return ret;
	134	}
	135
	136	void env_relocate_spec(void)
	137	{
	138	int ret;
	139	int crc1_ok = 0, crc2_ok = 0;
	140	env_t *tmp_env1 = NULL;
	141	env_t *tmp_env2 = NULL;
a3110f01	142	env_t *ep = NULL;
7319bcaf WW	143
7319bcaf WW	144	tmp_env1 = (env_t *)malloc(CONFIG_ENV_SIZE);
7319bcaf	145	tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE);
ea882baf WD	146
ea882baf WD	147	if (!tmp_env1 \|\| !tmp_env2) {
ea882baf	148	set_default_env("!malloc() failed");
2dc55d9e	149	goto out;
7319bcaf WW	150	}
	151
	152	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
	153	CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
ea882baf WD	154	if (!env_flash) {
ea882baf WD	155	set_default_env("!spi_flash_probe() failed");
2dc55d9e	156	goto out;
ea882baf	157	}
7319bcaf WW	158
	159	ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET,
	160	CONFIG_ENV_SIZE, tmp_env1);
ea882baf WD	161	if (ret) {
ea882baf WD	162	set_default_env("!spi_flash_read() failed");
7319bcaf	163	goto err_read;
ea882baf	164	}
7319bcaf WW	165
	166	if (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc)
	167	crc1_ok = 1;
7319bcaf WW	168
	169	ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET_REDUND,
	170	CONFIG_ENV_SIZE, tmp_env2);
	171	if (!ret) {
	172	if (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc)
	173	crc2_ok = 1;
7319bcaf WW	174	}
7319bcaf WW	175
a3110f01	176	if (!crc1_ok && !crc2_ok) {
a3110f01	177	set_default_env("!bad CRC");
2dc55d9e	178	goto err_read;
a3110f01	179	} else if (crc1_ok && !crc2_ok) {
7319bcaf	180	gd->env_valid = 1;
7319bcaf	181	} else if (!crc1_ok && crc2_ok) {
2dc55d9e	182	gd->env_valid = 2;
	183	} else if (tmp_env1->flags == ACTIVE_FLAG &&
	184	tmp_env2->flags == OBSOLETE_FLAG) {
7319bcaf	185	gd->env_valid = 1;
2dc55d9e	186	} else if (tmp_env1->flags == OBSOLETE_FLAG &&
2dc55d9e	187	tmp_env2->flags == ACTIVE_FLAG) {
a3110f01	188	gd->env_valid = 2;
2dc55d9e	189	} else if (tmp_env1->flags == tmp_env2->flags) {
7319bcaf	190	gd->env_valid = 2;
2dc55d9e	191	} else if (tmp_env1->flags == 0xFF) {
7319bcaf	192	gd->env_valid = 2;
7319bcaf WW	193	} else {
	194	/*
	195	* this differs from code in env_flash.c, but I think a sane
	196	* default path is desirable.
	197	*/
	198	gd->env_valid = 2;
7319bcaf	199	}
ea882baf	200
a3110f01 SB	201	if (gd->env_valid == 1)
	202	ep = tmp_env1;
	203	else
	204	ep = tmp_env2;
	205
	206	ret = env_import((char *)ep, 0);
	207	if (!ret) {
	208	error("Cannot import environment: errno = %d\n", errno);
	209	set_default_env("env_import failed");
7319bcaf	210	}
7319bcaf WW	211
	212	err_read:
	213	spi_flash_free(env_flash);
	214	env_flash = NULL;
7319bcaf	215	out:
ea882baf WD	216	free(tmp_env1);
ea882baf WD	217	free(tmp_env2);
7319bcaf WW	218	}
7319bcaf WW	219	#else
8c66497e HS	220	int saveenv(void)
8c66497e HS	221	{
eb58a7fc	222	u32 saved_size, saved_offset, sector = 1;
7ce1526e	223	char *saved_buffer = NULL;
eb58a7fc	224	int ret = 1;
cd0f4fa1	225	env_t env_new;
07efc9e3	226
8c66497e	227	if (!env_flash) {
a3110f01 SB	228	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS,
	229	CONFIG_ENV_SPI_CS,
	230	CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
	231	if (!env_flash) {
	232	set_default_env("!spi_flash_probe() failed");
	233	return 1;
	234	}
8c66497e HS	235	}
8c66497e HS	236
5b3375ac MF	237	/* Is the sector larger than the env (i.e. embedded) */
	238	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
	239	saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
	240	saved_offset = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE;
	241	saved_buffer = malloc(saved_size);
eb58a7fc	242	if (!saved_buffer)
5b3375ac	243	goto done;
eb58a7fc	244
a3110f01 SB	245	ret = spi_flash_read(env_flash, saved_offset,
a3110f01 SB	246	saved_size, saved_buffer);
5b3375ac MF	247	if (ret)
	248	goto done;
	249	}
	250
0e8d1586 JCPV	251	if (CONFIG_ENV_SIZE > CONFIG_ENV_SECT_SIZE) {
	252	sector = CONFIG_ENV_SIZE / CONFIG_ENV_SECT_SIZE;
	253	if (CONFIG_ENV_SIZE % CONFIG_ENV_SECT_SIZE)
07efc9e3 TL	254	sector++;
	255	}
	256
7ce1526e MV	257	ret = env_export(&env_new);
7ce1526e MV	258	if (ret)
a3110f01	259	goto done;
a3110f01	260
8c66497e	261	puts("Erasing SPI flash...");
a3110f01 SB	262	ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET,
a3110f01 SB	263	sector * CONFIG_ENV_SECT_SIZE);
5b3375ac MF	264	if (ret)
5b3375ac MF	265	goto done;
8c66497e HS	266
8c66497e HS	267	puts("Writing to SPI flash...");
a3110f01	268	ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET,
cd0f4fa1	269	CONFIG_ENV_SIZE, &env_new);
5b3375ac MF	270	if (ret)
5b3375ac MF	271	goto done;
8c66497e	272
5b3375ac	273	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
a3110f01 SB	274	ret = spi_flash_write(env_flash, saved_offset,
a3110f01 SB	275	saved_size, saved_buffer);
5b3375ac MF	276	if (ret)
	277	goto done;
	278	}
	279
	280	ret = 0;
8c66497e	281	puts("done\n");
5b3375ac MF	282
	283	done:
	284	if (saved_buffer)
	285	free(saved_buffer);
eb58a7fc	286
5b3375ac	287	return ret;
8c66497e HS	288	}
	289
	290	void env_relocate_spec(void)
	291	{
	292	int ret;
5a89fa92	293	char *buf = NULL;
8c66497e	294
5a89fa92	295	buf = (char *)malloc(CONFIG_ENV_SIZE);
0e8d1586 JCPV	296	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
0e8d1586 JCPV	297	CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
ea882baf WD	298	if (!env_flash) {
ea882baf WD	299	set_default_env("!spi_flash_probe() failed");
5a89fa92 YZ	300	if (buf)
5a89fa92 YZ	301	free(buf);
ea882baf WD	302	return;
ea882baf WD	303	}
8c66497e	304
ea882baf WD	305	ret = spi_flash_read(env_flash,
	306	CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf);
	307	if (ret) {
	308	set_default_env("!spi_flash_read() failed");
	309	goto out;
	310	}
8c66497e	311
ea882baf	312	ret = env_import(buf, 1);
ea882baf WD	313	if (ret)
	314	gd->env_valid = 1;
	315	out:
8c66497e	316	spi_flash_free(env_flash);
5a89fa92 YZ	317	if (buf)
5a89fa92 YZ	318	free(buf);
8c66497e	319	env_flash = NULL;
8c66497e	320	}
7319bcaf	321	#endif
8c66497e HS	322
	323	int env_init(void)
	324	{
	325	/* SPI flash isn't usable before relocation */
	326	gd->env_addr = (ulong)&default_environment[0];
	327	gd->env_valid = 1;
	328
	329	return 0;
	330	}