[people/ms/u-boot.git] / env / ext4.c

/*
 * (c) Copyright 2016 by VRT Technology
 *
 * Author:
 *  Stuart Longland <stuartl@vrt.com.au>
 *
 * Based on FAT environment driver
 * (c) Copyright 2011 by Tigris Elektronik GmbH
 *
 * Author:
 *  Maximilian Schwerin <mvs@tigris.de>
 *
 * and EXT4 filesystem implementation
 * (C) Copyright 2011 - 2012 Samsung Electronics
 * EXT4 filesystem implementation in Uboot by
 * Uma Shankar <uma.shankar@samsung.com>
 * Manjunatha C Achar <a.manjunatha@samsung.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>

#include <command.h>
#include <environment.h>
#include <linux/stddef.h>
#include <malloc.h>
#include <memalign.h>
#include <search.h>
#include <errno.h>
#include <ext4fs.h>
#include <mmc.h>

DECLARE_GLOBAL_DATA_PTR;

#ifdef CONFIG_CMD_SAVEENV
static int env_ext4_save(void)
{
	env_t	env_new;
	struct blk_desc *dev_desc = NULL;
	disk_partition_t info;
	int dev, part;
	int err;

	err = env_export(&env_new);
	if (err)
		return err;

	part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE,
				       CONFIG_ENV_EXT4_DEVICE_AND_PART,
				       &dev_desc, &info, 1);
	if (part < 0)
		return 1;

	dev = dev_desc->devnum;
	ext4fs_set_blk_dev(dev_desc, &info);

	if (!ext4fs_mount(info.size)) {
		printf("\n** Unable to use %s %s for saveenv **\n",
		       CONFIG_ENV_EXT4_INTERFACE,
		       CONFIG_ENV_EXT4_DEVICE_AND_PART);
		return 1;
	}

	err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)&env_new,
			   sizeof(env_t));
	ext4fs_close();

	if (err == -1) {
		printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
			CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev,
			part);
		return 1;
	}

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

static int env_ext4_load(void)
{
	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
	struct blk_desc *dev_desc = NULL;
	disk_partition_t info;
	int dev, part;
	int err;
	loff_t off;

	part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE,
				       CONFIG_ENV_EXT4_DEVICE_AND_PART,
				       &dev_desc, &info, 1);
	if (part < 0)
		goto err_env_relocate;

	dev = dev_desc->devnum;
	ext4fs_set_blk_dev(dev_desc, &info);

	if (!ext4fs_mount(info.size)) {
		printf("\n** Unable to use %s %s for loading the env **\n",
		       CONFIG_ENV_EXT4_INTERFACE,
		       CONFIG_ENV_EXT4_DEVICE_AND_PART);
		goto err_env_relocate;
	}

	err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE,
			     &off);
	ext4fs_close();

	if (err == -1) {
		printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
			CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev,
			part);
		goto err_env_relocate;
	}

	return env_import(buf, 1);

err_env_relocate:
	set_default_env(NULL);

	return -EIO;
}

U_BOOT_ENV_LOCATION(ext4) = {
	.location	= ENVL_EXT4,
	ENV_NAME("EXT4")
	.load		= env_ext4_load,
	.save		= env_save_ptr(env_ext4_save),
};
Commit	Line	Data
fd1000b9 SL	1	/*
	2	* (c) Copyright 2016 by VRT Technology
	3	*
	4	* Author:
	5	* Stuart Longland <stuartl@vrt.com.au>
	6	*
	7	* Based on FAT environment driver
	8	* (c) Copyright 2011 by Tigris Elektronik GmbH
	9	*
	10	* Author:
	11	* Maximilian Schwerin <mvs@tigris.de>
	12	*
	13	* and EXT4 filesystem implementation
	14	* (C) Copyright 2011 - 2012 Samsung Electronics
	15	* EXT4 filesystem implementation in Uboot by
	16	* Uma Shankar <uma.shankar@samsung.com>
	17	* Manjunatha C Achar <a.manjunatha@samsung.com>
	18	*
	19	* SPDX-License-Identifier: GPL-2.0+
	20	*/
	21
	22	#include <common.h>
	23
	24	#include <command.h>
	25	#include <environment.h>
	26	#include <linux/stddef.h>
	27	#include <malloc.h>
bd62e241	28	#include <memalign.h>
fd1000b9 SL	29	#include <search.h>
	30	#include <errno.h>
	31	#include <ext4fs.h>
	32	#include <mmc.h>
	33
fd1000b9 SL	34	DECLARE_GLOBAL_DATA_PTR;
fd1000b9 SL	35
fd1000b9	36	#ifdef CONFIG_CMD_SAVEENV
e5bce247	37	static int env_ext4_save(void)
fd1000b9 SL	38	{
fd1000b9 SL	39	env_t env_new;
bd62e241	40	struct blk_desc *dev_desc = NULL;
fd1000b9 SL	41	disk_partition_t info;
	42	int dev, part;
	43	int err;
	44
	45	err = env_export(&env_new);
	46	if (err)
	47	return err;
	48
1087a794 JRO	49	part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE,
	50	CONFIG_ENV_EXT4_DEVICE_AND_PART,
	51	&dev_desc, &info, 1);
fd1000b9 SL	52	if (part < 0)
	53	return 1;
	54
bd62e241	55	dev = dev_desc->devnum;
fd1000b9 SL	56	ext4fs_set_blk_dev(dev_desc, &info);
	57
	58	if (!ext4fs_mount(info.size)) {
	59	printf("\n Unable to use %s %s for saveenv \n",
1087a794 JRO	60	CONFIG_ENV_EXT4_INTERFACE,
1087a794 JRO	61	CONFIG_ENV_EXT4_DEVICE_AND_PART);
fd1000b9 SL	62	return 1;
	63	}
	64
1087a794 JRO	65	err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)&env_new,
1087a794 JRO	66	sizeof(env_t));
fd1000b9 SL	67	ext4fs_close();
	68
	69	if (err == -1) {
	70	printf("\n Unable to write \"%s\" from %s%d:%d \n",
1087a794 JRO	71	CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev,
1087a794 JRO	72	part);
fd1000b9 SL	73	return 1;
	74	}
	75
	76	puts("done\n");
	77	return 0;
	78	}
	79	#endif /* CONFIG_CMD_SAVEENV */
	80
c5951991	81	static int env_ext4_load(void)
fd1000b9 SL	82	{
fd1000b9 SL	83	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
bd62e241	84	struct blk_desc *dev_desc = NULL;
fd1000b9 SL	85	disk_partition_t info;
	86	int dev, part;
	87	int err;
bd62e241	88	loff_t off;
fd1000b9	89
1087a794 JRO	90	part = blk_get_device_part_str(CONFIG_ENV_EXT4_INTERFACE,
	91	CONFIG_ENV_EXT4_DEVICE_AND_PART,
	92	&dev_desc, &info, 1);
fd1000b9 SL	93	if (part < 0)
	94	goto err_env_relocate;
	95
bd62e241	96	dev = dev_desc->devnum;
fd1000b9 SL	97	ext4fs_set_blk_dev(dev_desc, &info);
	98
	99	if (!ext4fs_mount(info.size)) {
	100	printf("\n Unable to use %s %s for loading the env \n",
1087a794 JRO	101	CONFIG_ENV_EXT4_INTERFACE,
1087a794 JRO	102	CONFIG_ENV_EXT4_DEVICE_AND_PART);
fd1000b9 SL	103	goto err_env_relocate;
	104	}
	105
1087a794 JRO	106	err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE,
1087a794 JRO	107	&off);
fd1000b9 SL	108	ext4fs_close();
	109
	110	if (err == -1) {
	111	printf("\n Unable to read \"%s\" from %s%d:%d \n",
1087a794 JRO	112	CONFIG_ENV_EXT4_FILE, CONFIG_ENV_EXT4_INTERFACE, dev,
1087a794 JRO	113	part);
fd1000b9 SL	114	goto err_env_relocate;
	115	}
	116
2166ebf7	117	return env_import(buf, 1);
fd1000b9 SL	118
	119	err_env_relocate:
	120	set_default_env(NULL);
c5951991 SG	121
c5951991 SG	122	return -EIO;
fd1000b9	123	}
4415f1d1 SG	124
	125	U_BOOT_ENV_LOCATION(ext4) = {
	126	.location = ENVL_EXT4,
ac358beb	127	ENV_NAME("EXT4")
e5bce247 SG	128	.load = env_ext4_load,
e5bce247 SG	129	.save = env_save_ptr(env_ext4_save),
4415f1d1	130	};