[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(EXT4_ENV_INTERFACE,
					EXT4_ENV_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",
		       EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
		return 1;
	}

	err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
	ext4fs_close();

	if (err == -1) {
		printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
			EXT4_ENV_FILE, EXT4_ENV_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(EXT4_ENV_INTERFACE,
					EXT4_ENV_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",
		       EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
		goto err_env_relocate;
	}

	err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off);
	ext4fs_close();

	if (err == -1) {
		printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
			EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
		goto err_env_relocate;
	}

	env_import(buf, 1);
	return 0;

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
bd62e241	49	part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
fd1000b9 SL	50	EXT4_ENV_DEVICE_AND_PART,
	51	&dev_desc, &info, 1);
	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",
	60	EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
	61	return 1;
	62	}
	63
	64	err = ext4fs_write(EXT4_ENV_FILE, (void *)&env_new, sizeof(env_t));
	65	ext4fs_close();
	66
	67	if (err == -1) {
	68	printf("\n Unable to write \"%s\" from %s%d:%d \n",
	69	EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
	70	return 1;
	71	}
	72
	73	puts("done\n");
	74	return 0;
	75	}
	76	#endif /* CONFIG_CMD_SAVEENV */
	77
c5951991	78	static int env_ext4_load(void)
fd1000b9 SL	79	{
fd1000b9 SL	80	ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
bd62e241	81	struct blk_desc *dev_desc = NULL;
fd1000b9 SL	82	disk_partition_t info;
	83	int dev, part;
	84	int err;
bd62e241	85	loff_t off;
fd1000b9	86
bd62e241	87	part = blk_get_device_part_str(EXT4_ENV_INTERFACE,
fd1000b9 SL	88	EXT4_ENV_DEVICE_AND_PART,
	89	&dev_desc, &info, 1);
	90	if (part < 0)
	91	goto err_env_relocate;
	92
bd62e241	93	dev = dev_desc->devnum;
fd1000b9 SL	94	ext4fs_set_blk_dev(dev_desc, &info);
	95
	96	if (!ext4fs_mount(info.size)) {
	97	printf("\n Unable to use %s %s for loading the env \n",
	98	EXT4_ENV_INTERFACE, EXT4_ENV_DEVICE_AND_PART);
	99	goto err_env_relocate;
	100	}
	101
bd62e241	102	err = ext4_read_file(EXT4_ENV_FILE, buf, 0, CONFIG_ENV_SIZE, &off);
fd1000b9 SL	103	ext4fs_close();
	104
	105	if (err == -1) {
	106	printf("\n Unable to read \"%s\" from %s%d:%d \n",
	107	EXT4_ENV_FILE, EXT4_ENV_INTERFACE, dev, part);
	108	goto err_env_relocate;
	109	}
	110
	111	env_import(buf, 1);
c5951991	112	return 0;
fd1000b9 SL	113
	114	err_env_relocate:
	115	set_default_env(NULL);
c5951991 SG	116
c5951991 SG	117	return -EIO;
fd1000b9	118	}
4415f1d1 SG	119
	120	U_BOOT_ENV_LOCATION(ext4) = {
	121	.location = ENVL_EXT4,
ac358beb	122	ENV_NAME("EXT4")
e5bce247 SG	123	.load = env_ext4_load,
e5bce247 SG	124	.save = env_save_ptr(env_ext4_save),
4415f1d1	125	};