[J-u-boot.git] / env / ubi.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (c) Copyright 2012 by National Instruments,
 *        Joe Hershberger <[email protected]>
 */

#include <common.h>

#include <command.h>
#include <environment.h>
#include <errno.h>
#include <malloc.h>
#include <memalign.h>
#include <search.h>
#include <ubi_uboot.h>
#undef crc32

DECLARE_GLOBAL_DATA_PTR;

#ifdef CONFIG_CMD_SAVEENV
#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
static int env_ubi_save(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
	int ret;

	ret = env_export(env_new);
	if (ret)
		return ret;

	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
		printf("\n** Cannot find mtd partition \"%s\"\n",
		       CONFIG_ENV_UBI_PART);
		return 1;
	}

	if (gd->env_valid == ENV_VALID) {
		puts("Writing to redundant UBI... ");
		if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND,
				     (void *)env_new, CONFIG_ENV_SIZE)) {
			printf("\n** Unable to write env to %s:%s **\n",
			       CONFIG_ENV_UBI_PART,
			       CONFIG_ENV_UBI_VOLUME_REDUND);
			return 1;
		}
	} else {
		puts("Writing to UBI... ");
		if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME,
				     (void *)env_new, CONFIG_ENV_SIZE)) {
			printf("\n** Unable to write env to %s:%s **\n",
			       CONFIG_ENV_UBI_PART,
			       CONFIG_ENV_UBI_VOLUME);
			return 1;
		}
	}

	puts("done\n");

	gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;

	return 0;
}
#else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
static int env_ubi_save(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
	int ret;

	ret = env_export(env_new);
	if (ret)
		return ret;

	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
		printf("\n** Cannot find mtd partition \"%s\"\n",
		       CONFIG_ENV_UBI_PART);
		return 1;
	}

	if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_new,
			     CONFIG_ENV_SIZE)) {
		printf("\n** Unable to write env to %s:%s **\n",
		       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
		return 1;
	}

	puts("done\n");
	return 0;
}
#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
#endif /* CONFIG_CMD_SAVEENV */

#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
static int env_ubi_load(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf, CONFIG_ENV_SIZE);
	ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf, CONFIG_ENV_SIZE);
	int read1_fail, read2_fail;
	env_t *tmp_env1, *tmp_env2;

	/*
	 * In case we have restarted u-boot there is a chance that buffer
	 * contains old environment (from the previous boot).
	 * If UBI volume is zero size, ubi_volume_read() doesn't modify the
	 * buffer.
	 * We need to clear buffer manually here, so the invalid CRC will
	 * cause setting default environment as expected.
	 */
	memset(env1_buf, 0x0, CONFIG_ENV_SIZE);
	memset(env2_buf, 0x0, CONFIG_ENV_SIZE);

	tmp_env1 = (env_t *)env1_buf;
	tmp_env2 = (env_t *)env2_buf;

	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
		printf("\n** Cannot find mtd partition \"%s\"\n",
		       CONFIG_ENV_UBI_PART);
		set_default_env(NULL, 0);
		return -EIO;
	}

	read1_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1,
				     CONFIG_ENV_SIZE);
	if (read1_fail)
		printf("\n** Unable to read env from %s:%s **\n",
		       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);

	read2_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND,
				     (void *)tmp_env2, CONFIG_ENV_SIZE);
	if (read2_fail)
		printf("\n** Unable to read redundant env from %s:%s **\n",
		       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND);

	return env_import_redund((char *)tmp_env1, read1_fail, (char *)tmp_env2,
							 read2_fail);
}
#else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
static int env_ubi_load(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);

	/*
	 * In case we have restarted u-boot there is a chance that buffer
	 * contains old environment (from the previous boot).
	 * If UBI volume is zero size, ubi_volume_read() doesn't modify the
	 * buffer.
	 * We need to clear buffer manually here, so the invalid CRC will
	 * cause setting default environment as expected.
	 */
	memset(buf, 0x0, CONFIG_ENV_SIZE);

	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
		printf("\n** Cannot find mtd partition \"%s\"\n",
		       CONFIG_ENV_UBI_PART);
		set_default_env(NULL, 0);
		return -EIO;
	}

	if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, buf, CONFIG_ENV_SIZE)) {
		printf("\n** Unable to read env from %s:%s **\n",
		       CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
		set_default_env(NULL, 0);
		return -EIO;
	}

	return env_import(buf, 1);
}
#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */

U_BOOT_ENV_LOCATION(ubi) = {
	.location	= ENVL_UBI,
	ENV_NAME("UBI")
	.load		= env_ubi_load,
	.save		= env_save_ptr(env_ubi_save),
};
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
2b74433f JH	2	/*
	3	* (c) Copyright 2012 by National Instruments,
	4	* Joe Hershberger <[email protected]>
2b74433f JH	5	*/
	6
	7	#include <common.h>
	8
	9	#include <command.h>
	10	#include <environment.h>
	11	#include <errno.h>
	12	#include <malloc.h>
cf92e05c	13	#include <memalign.h>
2b74433f JH	14	#include <search.h>
	15	#include <ubi_uboot.h>
	16	#undef crc32
	17
2b74433f JH	18	DECLARE_GLOBAL_DATA_PTR;
2b74433f JH	19
2b74433f	20	#ifdef CONFIG_CMD_SAVEENV
785881f7	21	#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
e5bce247	22	static int env_ubi_save(void)
785881f7 JH	23	{
785881f7 JH	24	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
7ce1526e	25	int ret;
785881f7	26
7ce1526e MV	27	ret = env_export(env_new);
	28	if (ret)
	29	return ret;
785881f7 JH	30
	31	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
	32	printf("\n** Cannot find mtd partition \"%s\"\n",
	33	CONFIG_ENV_UBI_PART);
	34	return 1;
	35	}
	36
203e94f6	37	if (gd->env_valid == ENV_VALID) {
785881f7 JH	38	puts("Writing to redundant UBI... ");
	39	if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND,
	40	(void *)env_new, CONFIG_ENV_SIZE)) {
	41	printf("\n Unable to write env to %s:%s \n",
	42	CONFIG_ENV_UBI_PART,
	43	CONFIG_ENV_UBI_VOLUME_REDUND);
	44	return 1;
	45	}
	46	} else {
	47	puts("Writing to UBI... ");
	48	if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME,
	49	(void *)env_new, CONFIG_ENV_SIZE)) {
	50	printf("\n Unable to write env to %s:%s \n",
	51	CONFIG_ENV_UBI_PART,
	52	CONFIG_ENV_UBI_VOLUME);
	53	return 1;
	54	}
	55	}
	56
	57	puts("done\n");
	58
203e94f6	59	gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
785881f7 JH	60
	61	return 0;
	62	}
	63	#else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
e5bce247	64	static int env_ubi_save(void)
2b74433f JH	65	{
2b74433f JH	66	ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
7ce1526e	67	int ret;
2b74433f	68
7ce1526e MV	69	ret = env_export(env_new);
	70	if (ret)
	71	return ret;
2b74433f JH	72
	73	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
	74	printf("\n** Cannot find mtd partition \"%s\"\n",
	75	CONFIG_ENV_UBI_PART);
	76	return 1;
	77	}
	78
2b74433f JH	79	if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_new,
	80	CONFIG_ENV_SIZE)) {
	81	printf("\n Unable to write env to %s:%s \n",
	82	CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
	83	return 1;
	84	}
	85
	86	puts("done\n");
	87	return 0;
	88	}
785881f7	89	#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
2b74433f JH	90	#endif /* CONFIG_CMD_SAVEENV */
2b74433f JH	91
785881f7	92	#ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
c5951991	93	static int env_ubi_load(void)
785881f7 JH	94	{
	95	ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf, CONFIG_ENV_SIZE);
	96	ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf, CONFIG_ENV_SIZE);
31f044bd	97	int read1_fail, read2_fail;
9d364af2	98	env_t tmp_env1, tmp_env2;
785881f7	99
c1f51e0f MN	100	/*
	101	* In case we have restarted u-boot there is a chance that buffer
	102	* contains old environment (from the previous boot).
	103	* If UBI volume is zero size, ubi_volume_read() doesn't modify the
	104	* buffer.
	105	* We need to clear buffer manually here, so the invalid CRC will
	106	* cause setting default environment as expected.
	107	*/
	108	memset(env1_buf, 0x0, CONFIG_ENV_SIZE);
	109	memset(env2_buf, 0x0, CONFIG_ENV_SIZE);
	110
785881f7 JH	111	tmp_env1 = (env_t *)env1_buf;
	112	tmp_env2 = (env_t *)env2_buf;
	113
	114	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
	115	printf("\n** Cannot find mtd partition \"%s\"\n",
	116	CONFIG_ENV_UBI_PART);
c5d548a9	117	set_default_env(NULL, 0);
c5951991	118	return -EIO;
785881f7 JH	119	}
785881f7 JH	120
31f044bd SG	121	read1_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1,
	122	CONFIG_ENV_SIZE);
	123	if (read1_fail)
785881f7 JH	124	printf("\n Unable to read env from %s:%s \n",
785881f7 JH	125	CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
785881f7	126
31f044bd SG	127	read2_fail = ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND,
	128	(void *)tmp_env2, CONFIG_ENV_SIZE);
	129	if (read2_fail)
785881f7 JH	130	printf("\n Unable to read redundant env from %s:%s \n",
785881f7 JH	131	CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND);
785881f7	132
31f044bd SG	133	return env_import_redund((char )tmp_env1, read1_fail, (char )tmp_env2,
31f044bd SG	134	read2_fail);
785881f7 JH	135	}
785881f7 JH	136	#else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
c5951991	137	static int env_ubi_load(void)
2b74433f JH	138	{
	139	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
	140
c1f51e0f MN	141	/*
	142	* In case we have restarted u-boot there is a chance that buffer
	143	* contains old environment (from the previous boot).
	144	* If UBI volume is zero size, ubi_volume_read() doesn't modify the
	145	* buffer.
	146	* We need to clear buffer manually here, so the invalid CRC will
	147	* cause setting default environment as expected.
	148	*/
	149	memset(buf, 0x0, CONFIG_ENV_SIZE);
	150
2b74433f JH	151	if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
	152	printf("\n** Cannot find mtd partition \"%s\"\n",
	153	CONFIG_ENV_UBI_PART);
c5d548a9	154	set_default_env(NULL, 0);
c5951991	155	return -EIO;
2b74433f JH	156	}
2b74433f JH	157
a7c06cd3	158	if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, buf, CONFIG_ENV_SIZE)) {
2b74433f JH	159	printf("\n Unable to read env from %s:%s \n",
2b74433f JH	160	CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
c5d548a9	161	set_default_env(NULL, 0);
c5951991	162	return -EIO;
2b74433f JH	163	}
2b74433f JH	164
2166ebf7	165	return env_import(buf, 1);
2b74433f	166	}
785881f7	167	#endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
4415f1d1 SG	168
	169	U_BOOT_ENV_LOCATION(ubi) = {
	170	.location = ENVL_UBI,
344ca795	171	ENV_NAME("UBI")
e5bce247 SG	172	.load = env_ubi_load,
e5bce247 SG	173	.save = env_save_ptr(env_ubi_save),
4415f1d1	174	};