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

/*
 * (C) Copyright 2000-2010
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Andreas Heppel <aheppel@sysgo.de>
 *
 * (C) Copyright 2008 Atmel Corporation
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */
#include <common.h>
#include <environment.h>
#include <malloc.h>
#include <spi.h>
#include <spi_flash.h>
#include <search.h>
#include <errno.h>
#include <dm/device-internal.h>

#ifndef CONFIG_ENV_SPI_BUS
# define CONFIG_ENV_SPI_BUS	CONFIG_SF_DEFAULT_BUS
#endif
#ifndef CONFIG_ENV_SPI_CS
# define CONFIG_ENV_SPI_CS	CONFIG_SF_DEFAULT_CS
#endif
#ifndef CONFIG_ENV_SPI_MAX_HZ
# define CONFIG_ENV_SPI_MAX_HZ	CONFIG_SF_DEFAULT_SPEED
#endif
#ifndef CONFIG_ENV_SPI_MODE
# define CONFIG_ENV_SPI_MODE	CONFIG_SF_DEFAULT_MODE
#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;

static int setup_flash_device(void)
{
#ifdef CONFIG_DM_SPI_FLASH
	struct udevice *new;
	int	ret;

	/* speed and mode will be read from DT */
	ret = spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
				     0, 0, &new);
	if (ret) {
		set_default_env("!spi_flash_probe_bus_cs() failed");
		return 1;
	}

	env_flash = dev_get_uclass_priv(new);
#else

	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;
		}
	}
#endif
	return 0;
}

#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;
	int	ret;

	ret = setup_flash_device();
	if (ret)
		return ret;

	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 = memalign(ARCH_DMA_MINALIGN, 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;
	}

	sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);

	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 *)memalign(ARCH_DMA_MINALIGN,
			CONFIG_ENV_SIZE);
	tmp_env2 = (env_t *)memalign(ARCH_DMA_MINALIGN,
			CONFIG_ENV_SIZE);
	if (!tmp_env1 || !tmp_env2) {
		set_default_env("!malloc() failed");
		goto out;
	}

	ret = setup_flash_device();
	if (ret)
		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 = 1;
	} else if (tmp_env1->flags == 0xFF) {
		gd->env_valid = 1;
	} else if (tmp_env2->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 = 1;
	}

	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;
	char	*saved_buffer = NULL;
	int	ret = 1;
	env_t	env_new;

	ret = setup_flash_device();
	if (ret)
		return ret;

	/* 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;
	}

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

	sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);

	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 *)memalign(ARCH_DMA_MINALIGN, CONFIG_ENV_SIZE);
	if (!buf) {
		set_default_env("!malloc() failed");
		return;
	}

	ret = setup_flash_device();
	if (ret)
		goto out;

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

	ret = env_import(buf, 1);
	if (ret)
		gd->env_valid = 1;

err_read:
	spi_flash_free(env_flash);
	env_flash = NULL;
out:
	free(buf);
}
#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, wd@denx.de.
	4	*
	5	* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
	6	* Andreas Heppel <aheppel@sysgo.de>
	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>
843c9e87	15	#include <spi.h>
8c66497e	16	#include <spi_flash.h>
ea882baf WD	17	#include <search.h>
ea882baf WD	18	#include <errno.h>
19c31285	19	#include <dm/device-internal.h>
8c66497e	20
0e8d1586	21	#ifndef CONFIG_ENV_SPI_BUS
2e4e5ad4	22	# define CONFIG_ENV_SPI_BUS CONFIG_SF_DEFAULT_BUS
8c66497e	23	#endif
0e8d1586	24	#ifndef CONFIG_ENV_SPI_CS
2e4e5ad4	25	# define CONFIG_ENV_SPI_CS CONFIG_SF_DEFAULT_CS
8c66497e	26	#endif
0e8d1586	27	#ifndef CONFIG_ENV_SPI_MAX_HZ
2e4e5ad4	28	# define CONFIG_ENV_SPI_MAX_HZ CONFIG_SF_DEFAULT_SPEED
8c66497e	29	#endif
0e8d1586	30	#ifndef CONFIG_ENV_SPI_MODE
2e4e5ad4	31	# define CONFIG_ENV_SPI_MODE CONFIG_SF_DEFAULT_MODE
8c66497e HS	32	#endif
8c66497e HS	33
7319bcaf	34	#ifdef CONFIG_ENV_OFFSET_REDUND
eb58a7fc IG	35	static ulong env_offset = CONFIG_ENV_OFFSET;
eb58a7fc IG	36	static ulong env_new_offset = CONFIG_ENV_OFFSET_REDUND;
7319bcaf	37
eb58a7fc IG	38	#define ACTIVE_FLAG 1
eb58a7fc IG	39	#define OBSOLETE_FLAG 0
a3110f01	40	#endif /* CONFIG_ENV_OFFSET_REDUND */
7319bcaf	41
8c66497e HS	42	DECLARE_GLOBAL_DATA_PTR;
8c66497e HS	43
eb58a7fc	44	char *env_name_spec = "SPI Flash";
8c66497e HS	45
	46	static struct spi_flash *env_flash;
	47
afa81a77	48	static int setup_flash_device(void)
7319bcaf	49	{
19c31285 GQ	50	#ifdef CONFIG_DM_SPI_FLASH
19c31285 GQ	51	struct udevice *new;
afa81a77	52	int ret;
19c31285	53
96907c0f	54	/* speed and mode will be read from DT */
19c31285	55	ret = spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
96907c0f	56	0, 0, &new);
19c31285 GQ	57	if (ret) {
	58	set_default_env("!spi_flash_probe_bus_cs() failed");
	59	return 1;
	60	}
	61
	62	env_flash = dev_get_uclass_priv(new);
	63	#else
7319bcaf WW	64
7319bcaf WW	65	if (!env_flash) {
a3110f01 SB	66	env_flash = spi_flash_probe(CONFIG_ENV_SPI_BUS,
	67	CONFIG_ENV_SPI_CS,
	68	CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
	69	if (!env_flash) {
	70	set_default_env("!spi_flash_probe() failed");
	71	return 1;
	72	}
7319bcaf	73	}
19c31285	74	#endif
afa81a77 AF	75	return 0;
	76	}
	77
	78	#if defined(CONFIG_ENV_OFFSET_REDUND)
	79	int saveenv(void)
	80	{
	81	env_t env_new;
	82	char *saved_buffer = NULL, flag = OBSOLETE_FLAG;
0b2e5bbe	83	u32 saved_size, saved_offset, sector;
afa81a77 AF	84	int ret;
	85
	86	ret = setup_flash_device();
	87	if (ret)
	88	return ret;
7319bcaf	89
7ce1526e MV	90	ret = env_export(&env_new);
	91	if (ret)
	92	return ret;
cd0f4fa1	93	env_new.flags = ACTIVE_FLAG;
ea882baf	94
a3110f01 SB	95	if (gd->env_valid == 1) {
	96	env_new_offset = CONFIG_ENV_OFFSET_REDUND;
	97	env_offset = CONFIG_ENV_OFFSET;
	98	} else {
	99	env_new_offset = CONFIG_ENV_OFFSET;
	100	env_offset = CONFIG_ENV_OFFSET_REDUND;
	101	}
	102
7319bcaf WW	103	/* Is the sector larger than the env (i.e. embedded) */
	104	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
	105	saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
	106	saved_offset = env_new_offset + CONFIG_ENV_SIZE;
7dd01744	107	saved_buffer = memalign(ARCH_DMA_MINALIGN, saved_size);
7319bcaf WW	108	if (!saved_buffer) {
	109	ret = 1;
	110	goto done;
	111	}
	112	ret = spi_flash_read(env_flash, saved_offset,
	113	saved_size, saved_buffer);
	114	if (ret)
	115	goto done;
	116	}
	117
0b2e5bbe	118	sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);
7319bcaf WW	119
	120	puts("Erasing SPI flash...");
	121	ret = spi_flash_erase(env_flash, env_new_offset,
	122	sector * CONFIG_ENV_SECT_SIZE);
	123	if (ret)
	124	goto done;
	125
	126	puts("Writing to SPI flash...");
7319bcaf	127
a3110f01	128	ret = spi_flash_write(env_flash, env_new_offset,
cd0f4fa1	129	CONFIG_ENV_SIZE, &env_new);
7319bcaf WW	130	if (ret)
	131	goto done;
	132
	133	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
	134	ret = spi_flash_write(env_flash, saved_offset,
	135	saved_size, saved_buffer);
	136	if (ret)
	137	goto done;
	138	}
	139
eb58a7fc	140	ret = spi_flash_write(env_flash, env_offset + offsetof(env_t, flags),
cd0f4fa1	141	sizeof(env_new.flags), &flag);
a3110f01 SB	142	if (ret)
a3110f01 SB	143	goto done;
7319bcaf	144
7319bcaf WW	145	puts("done\n");
7319bcaf WW	146
eb58a7fc	147	gd->env_valid = gd->env_valid == 2 ? 1 : 2;
a3110f01	148
2dc55d9e	149	printf("Valid environment: %d\n", (int)gd->env_valid);
a3110f01	150
7319bcaf WW	151	done:
	152	if (saved_buffer)
	153	free(saved_buffer);
eb58a7fc	154
7319bcaf WW	155	return ret;
	156	}
	157
	158	void env_relocate_spec(void)
	159	{
	160	int ret;
	161	int crc1_ok = 0, crc2_ok = 0;
	162	env_t *tmp_env1 = NULL;
	163	env_t *tmp_env2 = NULL;
a3110f01	164	env_t *ep = NULL;
7319bcaf	165
7dd01744 RB	166	tmp_env1 = (env_t *)memalign(ARCH_DMA_MINALIGN,
	167	CONFIG_ENV_SIZE);
	168	tmp_env2 = (env_t *)memalign(ARCH_DMA_MINALIGN,
	169	CONFIG_ENV_SIZE);
ea882baf	170	if (!tmp_env1 \|\| !tmp_env2) {
ea882baf	171	set_default_env("!malloc() failed");
2dc55d9e	172	goto out;
7319bcaf WW	173	}
7319bcaf WW	174
8fee8845 AF	175	ret = setup_flash_device();
8fee8845 AF	176	if (ret)
2dc55d9e	177	goto out;
7319bcaf WW	178
	179	ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET,
	180	CONFIG_ENV_SIZE, tmp_env1);
ea882baf WD	181	if (ret) {
ea882baf WD	182	set_default_env("!spi_flash_read() failed");
7319bcaf	183	goto err_read;
ea882baf	184	}
7319bcaf WW	185
	186	if (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc)
	187	crc1_ok = 1;
7319bcaf WW	188
	189	ret = spi_flash_read(env_flash, CONFIG_ENV_OFFSET_REDUND,
	190	CONFIG_ENV_SIZE, tmp_env2);
	191	if (!ret) {
	192	if (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc)
	193	crc2_ok = 1;
7319bcaf WW	194	}
7319bcaf WW	195
a3110f01	196	if (!crc1_ok && !crc2_ok) {
a3110f01	197	set_default_env("!bad CRC");
2dc55d9e	198	goto err_read;
a3110f01	199	} else if (crc1_ok && !crc2_ok) {
7319bcaf	200	gd->env_valid = 1;
7319bcaf	201	} else if (!crc1_ok && crc2_ok) {
2dc55d9e	202	gd->env_valid = 2;
	203	} else if (tmp_env1->flags == ACTIVE_FLAG &&
	204	tmp_env2->flags == OBSOLETE_FLAG) {
7319bcaf	205	gd->env_valid = 1;
2dc55d9e	206	} else if (tmp_env1->flags == OBSOLETE_FLAG &&
2dc55d9e	207	tmp_env2->flags == ACTIVE_FLAG) {
a3110f01	208	gd->env_valid = 2;
2dc55d9e	209	} else if (tmp_env1->flags == tmp_env2->flags) {
5e8397dd	210	gd->env_valid = 1;
2dc55d9e	211	} else if (tmp_env1->flags == 0xFF) {
5e8397dd MS	212	gd->env_valid = 1;
5e8397dd MS	213	} else if (tmp_env2->flags == 0xFF) {
7319bcaf	214	gd->env_valid = 2;
7319bcaf WW	215	} else {
	216	/*
	217	* this differs from code in env_flash.c, but I think a sane
	218	* default path is desirable.
	219	*/
5e8397dd	220	gd->env_valid = 1;
7319bcaf	221	}
ea882baf	222
a3110f01 SB	223	if (gd->env_valid == 1)
	224	ep = tmp_env1;
	225	else
	226	ep = tmp_env2;
	227
	228	ret = env_import((char *)ep, 0);
	229	if (!ret) {
	230	error("Cannot import environment: errno = %d\n", errno);
9a5d993e	231	set_default_env("!env_import failed");
7319bcaf	232	}
7319bcaf WW	233
	234	err_read:
	235	spi_flash_free(env_flash);
	236	env_flash = NULL;
7319bcaf	237	out:
ea882baf WD	238	free(tmp_env1);
ea882baf WD	239	free(tmp_env2);
7319bcaf WW	240	}
7319bcaf WW	241	#else
8c66497e HS	242	int saveenv(void)
8c66497e HS	243	{
0b2e5bbe	244	u32 saved_size, saved_offset, sector;
7ce1526e	245	char *saved_buffer = NULL;
eb58a7fc	246	int ret = 1;
cd0f4fa1	247	env_t env_new;
19c31285	248
afa81a77 AF	249	ret = setup_flash_device();
	250	if (ret)
	251	return ret;
8c66497e	252
5b3375ac MF	253	/* Is the sector larger than the env (i.e. embedded) */
	254	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
	255	saved_size = CONFIG_ENV_SECT_SIZE - CONFIG_ENV_SIZE;
	256	saved_offset = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE;
	257	saved_buffer = malloc(saved_size);
eb58a7fc	258	if (!saved_buffer)
5b3375ac	259	goto done;
eb58a7fc	260
a3110f01 SB	261	ret = spi_flash_read(env_flash, saved_offset,
a3110f01 SB	262	saved_size, saved_buffer);
5b3375ac MF	263	if (ret)
	264	goto done;
	265	}
	266
7ce1526e MV	267	ret = env_export(&env_new);
7ce1526e MV	268	if (ret)
a3110f01	269	goto done;
a3110f01	270
0b2e5bbe AF	271	sector = DIV_ROUND_UP(CONFIG_ENV_SIZE, CONFIG_ENV_SECT_SIZE);
0b2e5bbe AF	272
8c66497e	273	puts("Erasing SPI flash...");
a3110f01 SB	274	ret = spi_flash_erase(env_flash, CONFIG_ENV_OFFSET,
a3110f01 SB	275	sector * CONFIG_ENV_SECT_SIZE);
5b3375ac MF	276	if (ret)
5b3375ac MF	277	goto done;
8c66497e HS	278
8c66497e HS	279	puts("Writing to SPI flash...");
a3110f01	280	ret = spi_flash_write(env_flash, CONFIG_ENV_OFFSET,
cd0f4fa1	281	CONFIG_ENV_SIZE, &env_new);
5b3375ac MF	282	if (ret)
5b3375ac MF	283	goto done;
8c66497e	284
5b3375ac	285	if (CONFIG_ENV_SECT_SIZE > CONFIG_ENV_SIZE) {
a3110f01 SB	286	ret = spi_flash_write(env_flash, saved_offset,
a3110f01 SB	287	saved_size, saved_buffer);
5b3375ac MF	288	if (ret)
	289	goto done;
	290	}
	291
	292	ret = 0;
8c66497e	293	puts("done\n");
5b3375ac MF	294
	295	done:
	296	if (saved_buffer)
	297	free(saved_buffer);
eb58a7fc	298
5b3375ac	299	return ret;
8c66497e HS	300	}
	301
	302	void env_relocate_spec(void)
	303	{
	304	int ret;
5a89fa92	305	char *buf = NULL;
8c66497e	306
7dd01744	307	buf = (char *)memalign(ARCH_DMA_MINALIGN, CONFIG_ENV_SIZE);
c041c60c AF	308	if (!buf) {
c041c60c AF	309	set_default_env("!malloc() failed");
ea882baf WD	310	return;
ea882baf WD	311	}
8c66497e	312
c041c60c AF	313	ret = setup_flash_device();
	314	if (ret)
	315	goto out;
	316
ea882baf WD	317	ret = spi_flash_read(env_flash,
	318	CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE, buf);
	319	if (ret) {
	320	set_default_env("!spi_flash_read() failed");
c041c60c	321	goto err_read;
ea882baf	322	}
8c66497e	323
ea882baf	324	ret = env_import(buf, 1);
ea882baf WD	325	if (ret)
ea882baf WD	326	gd->env_valid = 1;
c041c60c AF	327
c041c60c AF	328	err_read:
8c66497e HS	329	spi_flash_free(env_flash);
8c66497e HS	330	env_flash = NULL;
c041c60c AF	331	out:
c041c60c AF	332	free(buf);
8c66497e	333	}
7319bcaf	334	#endif
8c66497e HS	335
	336	int env_init(void)
	337	{
	338	/* SPI flash isn't usable before relocation */
	339	gd->env_addr = (ulong)&default_environment[0];
	340	gd->env_valid = 1;
	341
	342	return 0;
	343	}